We are excited to introduce encoders with JST PH-type connectors for our 20D mm metal gearmotors, available in two versions to better satisfy different application constraints:

• Magnetic Encoder Pair Kit with Top-Entry Connector for 20D mm Metal Gearmotors, 12 CPR, 2.7-18V
• Magnetic Encoder Pair Kit with Side-Entry Connector for 20D mm Metal Gearmotors, 12 CPR, 2.7-18V

Magnetic Encoder with Top-Entry Connector assembled on a 20D mm Metal Gearmotor with Extended Motor Shaft (JST PH cable not included).	Magnetic Encoder with Side-Entry Connector assembled on a 20D mm Metal Gearmotor with Extended Motor Shaft (JST PH cable not included).

The top-entry connector allows the cable to come straight out the back, keeping things compactly in-line with the motor, while the side-entry connector is good for applications where there isn’t much space past the rear of the motor. We are also continuing to offer our original encoder board with through-holes, which allows wires to be soldered to the board for especially compact installations.

With these new encoders, you just have to solder the board to the two motor tabs, put the magnetic disc on the backshaft, and plug in your cable! And our just-released JST PH cables give you plenty of options to choose from:

JST PH-Style Cable, 6-Pin, Female-Female, 16cm.

JST PH-Style Cable with Female Pins for 0.1" Housings, 6-Pin, 12cm.

	JST PH-Style 6-Pin Cables
	Pins	Terminations	Length	Item #	Price
	6	double-sided (JST PH to JST PH)	10 cm (4″)	#5643	$3.23
			16 cm (6.3″)	#5644	$3.56
			25 cm (10″)	#5645	$4.04
			40 cm (16″)	#5646	$4.85
			63 cm (25″)	#5647	$6.08
		single-sided (JST PH to 0.1″ crimp pins)	12 cm (4.5″)	#5640	$3.34
			30 cm (12″)	#5641	$4.31
			75 cm (30″)	#5642	$6.73

The double-sided cables can be used with our new JST PH-style connector breakout boards, which are also available in top-entry and side-entry versions.

Breakout for JST PH-Style Connector, 6-Pin Male Top-Entry, with SH.

Breakout for JST PH-Style Connector, 6-Pin Male Side-Entry, with SH.

Introductory special discount! Use coupon code 20DENCINTRO to get some of these new encoders for just $6.95 per pair.

Related products

	Magnetic Encoder Pair Kit for 20D mm Metal Gearmotors, 20 CPR, 2.7-18V
	Magnetic Encoder Pair Kit with Side-Entry Connector for 20D mm Metal Gearmotors, 20 CPR, 2.7-18V
	Magnetic Encoder Pair Kit with Top-Entry Connector for 20D mm Metal Gearmotors, 20 CPR, 2.7-18V

We are having a Labor Day sale through Tuesday, September 2! Check out the sale page for more information. Please note that we will be closed Monday, so orders placed after 2 PM Pacific Time Friday, August 29 will be shipped on Tuesday, September 2.

We have released a series of breakout boards for our new JST SH-type cables that serve as adapters between these cables and breadboard-compatible 0.1″ through-holes. The new boards are available in pin counts from 2 through 5 and in top-entry and side-entry variations. We also have existing 6-pin versions that we originally released as accessories for our micro metal gearmotor encoders, so the through-holes are labeled on the silkscreen according to the pins they would map to on our encoders, but these can also be used as general-purpose breakout boards for our 6-pin cables. Here’s the full selection:

Top entry	Side entry
2-pin
3-pin
4-pin
5-pin
6-pin

You may have noticed several of our newer boards have JST SH-style connectors on them, from 2 pins on these micro metal gearmotor connector boards to 3 pins on these digital distance sensors to 4 pins on these contactless current sensor carriers and several I2C products including our USB-to-I2C adapters. We now have a series of compatible JST SH-style female cables to go with them. We are stocking them in a variety of lengths, pin counts, and termination styles, making 40 new cables in all to choose from!

	Pins	Terminations	Length	Item #
	1×2	double-sided (female-female)	10 cm (4″)	#5503
			16 cm (6.3″)	#5504
			25 cm (10″)	#5505
			40 cm (16″)	#5506
			63 cm (25″)	#5507
		single-sided (female- unterminated)	12 cm (4.5″)	#5500
			30 cm (12″)	#5501
			75 cm (30″)	#5502

	Pins	Terminations	Length	Item #
	1×3	double-sided (female-female)	10 cm (4″)	#5513
			16 cm (6.3″)	#5514
			25 cm (10″)	#5515
			40 cm (16″)	#5516
			63 cm (25″)	#5517
		single-sided (female- unterminated)	12 cm (4.5″)	#5510
			30 cm (12″)	#5511
			75 cm (30″)	#5512

	Pins	Terminations	Length	Item #
	1×4	double-sided (female-female)	10 cm (4″)	#5523
			16 cm (6.3″)	#5524
			25 cm (10″)	#5525
			40 cm (16″)	#5526
			63 cm (25″)	#5527
		single-sided (female- unterminated)	12 cm (4.5″)	#5520
			30 cm (12″)	#5521
			75 cm (30″)	#5522

	Pins	Terminations	Length	Item #
	1×5	double-sided (female-female)	10 cm (4″)	#5533
			16 cm (6.3″)	#5534
			25 cm (10″)	#5535
			40 cm (16″)	#5536
			63 cm (25″)	#5537
		single-sided (female- unterminated)	12 cm (4.5″)	#5530
			30 cm (12″)	#5531
			75 cm (30″)	#5532

	Pins	Terminations	Length	Item #
	1×6	double-sided (female-female)	10 cm (4″)	#5543
			16 cm (6.3″)	#5544
			25 cm (10″)	#5545
			40 cm (16″)	#5546
			63 cm (25″)	#5547
		single-sided (female- unterminated)	12 cm (4.5″)	#5540
			30 cm (12″)	#5541
			75 cm (30″)	#5542

The JST SH-style connector has a 1 mm pitch, making it a good choice for small modules, and the wires are 28 AWG. The double-sided cables have twisted wires and female connectors on both ends, while the single-sided versions have a connector on one end and unterminated wires on the other. The single-ended versions can easily be cut to shorter if desired, and remember that you can also cut the double-sided cables in half to get single-sided cables that are 5 cm, 8 cm, and 20 cm long.

The 4-pin versions are compatible with SparkFun’s Qwiic and Adafruit’s STEMMA QT.

We’ve had 6-pin cables for our Micro Metal Gearmotor encoders for years, but with this new line of cables, we’re offering a 6-pin version that matches the standardized color order, with black always corresponding to pin 1 and red always corresponding to pin 2. For reference, here is our selection of those original 6-pin cables, which have the green wire on pin 1:

	Pins	Terminations	Length	Item #
	1×6	double-sided (female-female)	10 cm (4″)	#4765
			16 cm (6.3″)	#4766
			25 cm (10″)	#4767
			40 cm (16″)	#4768
			63 cm (25″)	#4769
		single-sided (female- unterminated)	12 cm (4.5″)	#4762
			30 cm (12″)	#4763
			75 cm (30″)	#4764

What new products would you like to see with connectors for these cables?

We’re having a big Memorial Day Sale that includes over 1000 products from robots to regulators to sensors to motors, and more! Check out the sale page for more information. Please note that we will be closed Monday, so orders placed after 2 PM Pacific Time Friday, May 23 will be shipped on Tuesday, May 27.

ACS3704x Current Sensor Micro Carrier (top) and Compact Carrier (bottom) basic dimensions with US quarter for size reference.

ACS37030 Current Sensor Compact Carrier (top) and Large Carrier (bottom) size comparison.

We have released even more current sensors! As with our assortment of other active and preferred current sensors, these new boards are based on Allegro current-sensing ICs and have analog outputs with voltage proportional to the AC or DC current passing through the sensor while offering full electrical isolation of the current path from the sensor’s electronics. This isolation allows them to be inserted anywhere in the current path, including on the high side, and because the current path resistance is on the order of 2 mΩ or less, there is minimal effect on the rest of the system. Here’s a quick summary of the new sensor families:

Allegro ACS37041/ACS37042

These low-cost bidirectional current sensors have ranges of -10 A to +10 A or -30 A to +30 A with dedicated versions for 3.3 V and 5 V systems. The sensor itself is a tiny 5-pin SOT-23 package, which allows for an extra-compact, “micro” carrier board that is approximately 1/5th the size of our next smallest current sensor carrier. We also have versions in our standard “compact” form factor, which for these sensors end up being the larger of the two form factors available. These larger versions can accommodate a wider variety of connectors and thicker wires, and they have the same overall dimensions and current-path mounting hole arrangements as our other “compact” current sensor carriers.

The ACS37041 and ACS37042 are almost identical, with the key difference being that the ACS37042 has a higher isolation voltage rating. To support operation at higher voltages, the carrier boards for the ACS37042 versions have routed slots for higher creepage distances along the PCB surface. The pictures above show the ACS37041 carriers on the left and the ACS37042 carriers on the right.

The following table shows all of our ACS37041 and ACS37042 carrier options:

	Pololu Item #	Part Suffix	Isolation Rating 1	Supply Voltage	Current Range	Sensitivity (mV/A)	Zero Point	Size	PCB Details	Min PCB Creepage 2	Price
ACS3704x Micro Carriers
ACS37041	#5440 (coming June 2025)	010B3	100 VRMS	3.0 V to 3.6 V	±10 A	132	1.65 V	0.3″×0.4″ 7.6×10.2 mm	2 layers, 1-oz copper	1.6 mm	$4.15
	#5441	030B3			±30 A	44
	#5442	010B5		4.5 V to 5.5 V	±10 A	200	2.5 V
	#5443	030B5			±30 A	66.7
ACS37042	#5450	010B3	285 VRMS	3.0 V to 3.6 V	±10 A	132	1.65 V			2.0 mm	$4.69
	#5451	030B3			±30 A	44
	#5452 (coming June 2025)	010B5		4.5 V to 5.5 V	±10 A	200	2.5 V
	#5453 (coming June 2025)	030B5			±30 A	66.7
ACS3704x Compact Carriers
ACS37041	#5444 (coming June 2025)	010B3	100 VRMS	3.0 V to 3.6 V	±10 A	132	1.65 V	0.7″×0.8″ 17.8×20.3 mm	2 layers, 2-oz copper	1.6 mm	$4.45
	#5445	030B3			±30 A	44
	#5446	010B5		4.5 V to 5.5 V	±10 A	200	2.5 V
	#5447	030B5			±30 A	66.7
ACS37042	#5454	010B3	285 VRMS	3.0 V to 3.6 V	±10 A	132	1.65 V			3.0 mm	$4.99
	#5455	030B3			±30 A	44
	#5456 (coming June 2025)	010B5		4.5 V to 5.5 V	±10 A	200	2.5 V
	#5457 (coming June 2025)	030B5			±30 A	66.7
Note 1: IC component rating per manufacturer datasheet.
Note 2: Minimum creepage along PCB surface based on layout design only. Other creepage distances, e.g. along the body of the component, may be lower.

Allegro ACS37030

These sensors measure bidirectional currents from -20 A to +20 A or -65 A to +65 A, and they are intended for 3.3 V systems. What makes them really special are their extra-low (40 ns typical) response times and extra-high 5 MHz bandwidth, which are made possible by their combined use of two sensing technologies: a Hall effect sensor captures DC and low-frequency current information and an inductive coil captures high-frequency signals. The following table shows our available options:

	Pololu Item #	Part Suffix	Supply Voltage	Current Range	Sensitivity (mV/A)	Zero Point	Size	PCB Details	Price
ACS37030 Compact Carriers
	#5230	020B3	3.0 V to 3.6 V	±20 A	66	1.65 V	0.7″×0.8″ 17.8×20.3 mm	2 layers, 2-oz copper	$11.95
	#5231 (coming July 2025)	040B3		±40 A	33
	#5232	065B3		±65 A	20.3
ACS37030 Large Carriers
	#5235	065B3	3.0 V to 3.6 V	±65 A	20.3	1.65 V	1.4″×1.2″ 35.6×30.5 mm	6 layers, 2-oz copper	$14.95
	#5236 (coming July 2025)	040B3		±40 A	33

These sensors are available in our standard compact form factor, which is great for use in space-constrained systems, and the higher-current versions are also available in our standard large form factor, which supports more connection options for higher-current applications. The large carriers offer better thermal dissipation thanks to their 6-layer PCBs and increased surface area, and the holes and slots for the current path connection points accommodate thicker wires along with a variety of high-current connectors (e.g. lugs, solderless ring terminals, and 4-pin terminal blocks). Having these standard form factors available makes it easier to swap among different boards to compare different sensor ICs, and having different form factors available for the same sensor IC also makes it possible to evaluate how things like PCB area and the number of copper layers affects the sensor’s thermal performance

All our current sensors

These new additions bring us up to 96 total active and preferred current sensor carriers! Here’s a handy table comparing them all:

	ACS3704x Current Sensor Micro Carriers	ACS3704x Current Sensor Compact Carriers	ACS711 Current Sensor Carriers	ACS71240 Current Sensor Carriers	ACS724 Current Sensor Carriers	ACS37220 Current Sensor Compact Carriers	ACS37220 Current Sensor Large Carriers	ACS37030 Current Sensor Compact Carriers	ACS37030 Current Sensor Large Carriers	ACS72981 Current Sensor Compact Carriers	ACS72981 Current Sensor Large Carriers	CT432/CT433 TMR Current Sensor Compact Carriers	CT432/CT433 TMR Current Sensor Large Carriers
Allegro Sensor	ACS3704x		ACS711KEXT	ACS71240	ACS724LLCTR	ACS37220		ACS37030		ACS72981xLR		CT432/CT433
Sensing technology	Hall effect		Hall effect	Hall effect	Hall effect	Hall effect		Hall effect + inductive coil		Hall effect		XtremeSense™ TMR (tunneling magnetoresistance)
Logic voltage range	3.3V versions: 3.0–3.6 V 5V versions: 4.75–5.5 V		3.0–5.5 V	3.3V ver: 3.0–3.6 V 5V ver: 4.5–5.5 V	4.5–5.5 V	3.3V versions: 3.15–3.45 V 5V versions: 4.5–5.5 V		3.0–3.6 V		3.3V versions: 3.0–3.6 V 5V versions: 4.5–5.5 V		3.3V versions: 3.0–3.6 V 5V versions: 4.75–5.5 V
Family current range	10–30 A		15.5–31 A	10–50 A	2.5–50 A	100–200 A		20–65 A		50–200 A		20–70 A
Current range/ sensitivity of individual versions	ACS37041: 3.3V Bidirectional: ±30 A / 44 mV/A 5V Bidirectional: ±10 A / 200 mV/A ±30 A / 66.7 mV/A ACS37042: 3.3V Bidirectional: ±10 A / 132 mV/A ±30 A / 44 mV/A	ACS37041: 3.3V Bidirectional: ±30 A / 44 mV/A 5V Bidirectional: ±10 A / 200 mV/A ±30 A / 66.7 mV/A ACS37042: 3.3V Bidirectional: ±10 A / 132 mV/A ±30 A / 44 mV/A	Bidirectional:(1) ±15.5 A / 90 mV/A ±31 A / 45 mV/A	3.3V Bidirectional: ±10 A / 132 mV/A ±30 A / 44 mV/A ±50 A / 26.4 mV/A 5V Bidirectional: ±10 A / 200 mV/A ±30 A / 66 mV/A ±50 A / 40 mV/A 5V Unidirectional: 0–⁠50 A / 80 mv/A	5V Bidirectional:(2) ±2.5 A / 800 mV/A ±5 A / 400 mV/A ±10 A / 200 mV/A ±20 A / 100 mV/A ±30 A / 66 mV/A ±50 A / 40 mV/A 5V Unidirectional:(2) 0–⁠5 A / 800 mv/A 0–⁠10 A / 400 mv/A 0–⁠20 A / 200 mv/A 0–⁠30 A / 133 mV/A	3.3V Bidirectional: ±100 A / 13.2 mV/A ±150 A / 8.8 mV/A 5V Bidirectional: ±100 A / 20 mV/A ±150 A / 13.3 mV/A ±200 A / 10 mV/A	3.3V Bidirectional: ±100 A / 13.2 mV/A ±150 A / 8.8 mV/A 5V Bidirectional: ±100 A / 20 mV/A ±150 A / 13.3 mV/A ±200 A / 10 mV/A	3.3V Bidirectional: ±20 A / 66 mV/A ±65 A / 20.3 mV/A	3.3V Bidirectional: ±65 A / 20.3 mV/A	3.3V Bidirectional:(1) ±50 A / 26.4 mV/A ±100 A / 13.2 mV/A ±150 A / 8.8 mV/A ±200 A / 6.6 mV/A 3.3V Unidirectional:(1) 0–⁠50 A / 52.8 mv/A 0–⁠100 A / 26.4 mv/A 0–⁠150 A / 17.6 mv/A 0–⁠200 A / 13.2 mv/A 5V Bidirectional:(2) ±50 A / 40 mV/A ±100 A / 20 mV/A ±150 A / 13.3 mV/A ±200 A / 10 mV/A 5V Unidirectional:(2) 0–⁠50 A / 80 mv/A 0–⁠100 A / 40 mv/A 0–⁠150 A / 26.7 mv/A	3.3V Bidirectional:(1) ±50 A / 26.4 mV/A ±100 A / 13.2 mV/A ±150 A / 8.8 mV/A ±200 A / 6.6 mV/A 3.3V Unidirectional:(1) 0–⁠50 A / 52.8 mv/A 0–⁠100 A / 26.4 mv/A 0–⁠150 A / 17.6 mv/A 0–⁠200 A / 13.2 mv/A 5V Bidirectional:(2) ±50 A / 40 mV/A ±100 A / 20 mV/A ±150 A / 13.3 mV/A ±200 A / 10 mV/A 5V Unidirectional:(2) 0–⁠50 A / 80 mv/A 0–⁠100 A / 40 mv/A 0–⁠150 A / 26.7 mv/A	3.3V Bidirectional: ±20 A / 50 mV/A ±30 A / 33.3 mV/A ±50 A / 20 mV/A ±70 A / 14.3 mV/A 3.3V Unidirectional: 0–⁠20 A / 100 mv/A 0–⁠30 A / 66.7 mv/A 0–⁠50 A / 40 mv/A 0–⁠65 A / 30.8 mv/A 5V Bidirectional: ±20 A / 100 mV/A ±30 A / 66.7 mV/A ±50 A / 40 mV/A ±65 A / 30.8 mV/A 5V Unidirectional: 0–⁠20 A / 200 mv/A 0–⁠30 A / 133.3 mv/A 0–⁠50 A / 80 mv/A 0–⁠70 A / 57.1 mv/A	3.3V Bidirectional: ±50 A / 20 mV/A ±70 A / 14.3 mV/A 3.3V Unidirectional: 0–⁠50 A / 40 mv/A 0–⁠65 A / 30.8 mv/A 5V Bidirectional: ±50 A / 40 mV/A ±65 A / 30.8 mV/A 5V Unidirectional: 0–⁠50 A / 80 mv/A 0–⁠70 A / 57.1 mv/A
IC current path resistance	1.6 mΩ		0.6 mΩ	0.6 mΩ	0.6 mΩ	0.1 mΩ		0.7 mΩ		0.2 mΩ		1 mΩ
PCB	2 layers, 1-oz copper	2 layers, 2-oz copper	2 layers, 2-oz copper	2 layers, 2-oz copper	2 layers, 2- or 4-oz copper(4)	2 layers, 2-oz copper	6 layers, 2-oz copper	2 layers, 2-oz copper	6 layers, 2-oz copper	6 layers, 2-oz copper	6 layers, 2-oz copper	2 or 4 layers(5), 2-oz copper	6 layers, 2-oz copper
Max bandwidth	150 kHz		100 kHz	120 kHz	120 kHz(3)	150 kHz		5 MHz		250 kHz		1 MHz
Size	0.3″ × 0.4″	0.7″ × 0.8″	0.7″ × 0.8″	0.7″ × 0.8″	0.7″ × 0.8″	0.7″ × 0.8″	1.4″ × 1.2″	0.7″ × 0.8″	1.4″ × 1.2″	0.7″ × 0.8″	1.4″ × 1.2″	0.8″ × 1.1″	1.4″ × 1.2″
Overcurrent fault output						User-configurable threshold
Common-mode field rejection
Nonratiometric output
1-piece price	$4.15	$4.45	$4.85	$5.25	$9.95 – $11.49	$6.95	$10.95	$11.95	$14.95	$13.95	$16.95	$12.95	$16.95

Note 1: Sensitivity when Vcc = 3.3 V; actual sensitivity is ratiometric (i.e. it is proportional to Vcc).
Note 2: Sensitivity when Vcc = 5 V; actual sensitivity is ratiometric (i.e. it is proportional to Vcc).
Note 3: Bandwidth can be reduced by adding a filter capacitor.
Note 4: 50A version uses 4-oz copper PCB; all other versions use 2-oz copper.
Note 5: 50A and higher versions use a 4-layer PCB; all other versions use a 2-layer PCB.

You can also use the following selection box to see all these options sorted by current range:

Alternatives available with variations in these parameter(s): current range Select variant…

Related products

	ACS37042KLHBLT-030B3 Current Sensor Compact Carrier -30A to +30A, 3.3V
	ACS37030LLZATR-065B3 Current Sensor Compact Carrier -65A to +65A, 3.3V
	ACS37030LLZATR-065B3 Current Sensor Large Carrier -65A to +65A, 3.3V
	ACS37041KLHBLT-030B3 Current Sensor Micro Carrier -30A to +30A, 3.3V
	ACS37041KLHBLT-010B5 Current Sensor Micro Carrier -10A to +10A, 5V
	ACS37041KLHBLT-030B5 Current Sensor Micro Carrier -30A to +30A, 5V
	ACS37041KLHBLT-030B3 Current Sensor Compact Carrier -30A to +30A, 3.3V
	ACS37041KLHBLT-010B5 Current Sensor Compact Carrier -10A to +10A, 5V
	ACS37041KLHBLT-030B5 Current Sensor Compact Carrier -30A to +30A, 5V
	ACS37042KLHBLT-010B3 Current Sensor Micro Carrier -10A to +10A, 3.3V
	ACS37042KLHBLT-030B3 Current Sensor Micro Carrier -30A to +30A, 3.3V
	ACS37042KLHBLT-010B3 Current Sensor Compact Carrier -10A to +10A, 3.3V
	ACS37030LLZATR-020B3 Current Sensor Compact Carrier -20A to +20A, 3.3V

We’re excited to introduce our new isolated USB-to-I²C adapters! These boards make it easy to control your I²C device from your PC or other USB host, giving your applications access to a world of sensors and actuators or simplifying evaluation and troubleshooting of I²C hardware. Two versions are available, one that requires VCC to be supplied separately to the I²C side and one that can deliver 5V or 3.3V power to your I²C bus from your USB port while still maintaining electrical isolation.

Pololu Isolated USB-to-I²C Adapter pinout and LEDs.

Pololu Isolated USB-to-I²C Adapter with Isolated Power pinout and LEDs.

Both adapters offer full galvanic isolation to protect your PC from your experimental circuits and to avoid subtle common-ground problems.

Schematic diagram of the Pololu Isolated USB-to-I²C Adapter with Isolated Power.

The firmware is open source, so you can customize them, and the galvanic isolation building blocks used in these adapters are available separately in smaller modules if you want to implement your own isolated systems.

Related products

	Pololu Isolated USB-to-I²C Adapter
	Pololu Isolated USB-to-I²C Adapter with Isolated Power

This is not an April fools joke! One of our products is literally on the moon right now, and we got clearance from Firefly Aerospace to share this level of detail:

One of our encoders supported the gimbal mechanisms on the top deck of Firefly Aerospace’s Blue Ghost lunar lander that completed a successful mission on the Moon in March 2025. These mechanisms helped point the X-band antenna back at Earth after landing as shown here:

Learn more about Firefly’s Blue Ghost mission here: Blue Ghost Mission 1 – Firefly Aerospace.

Congratulations to everyone at Firefly Aerospace and thank you for letting us be a part of it!

Related products

Magnetic Encoder Pair Kit for 20D mm Metal Gearmotors, 20 CPR, 2.7-18V

We usually think of ground as a common point in our circuits, and many problems arise from not having a good (or any) ground connection. But there’s also the flip side of unexpected ground connections leading to malfunction or even destruction of our electronics systems. Keeping grounds separated can be an important part of improving functionality and reliability when connecting many parts or boards together, which is why we have continued our push into simplifying electrical isolation with the release of four new I²C isolator boards:

• Pololu I²C Isolator, ISO1640
• Pololu I²C Isolator with Connectors, ISO1640
• Pololu I²C Isolator with Isolated Power, ISO1640, MIE1W0505BGLVH, 5V/3.3V, 200mA
• Pololu I²C Isolator with Isolated Power and Connectors, ISO1640, MIE1W0505BGLVH, 5V/3.3V, 200mA

These modules enable bidirectional I²C communication between devices while maintaining complete galvanic isolation between the two sides. This prevents the unexpected flow of current between the two sides, and it can also prevent destructive voltages on one side from propagating into the other (note that in this scenario one side will still be destroyed, but at least the damage will be contained to the isolated portion). The modules are based on Texas Instruments’ ISO1640B, which supports bidirectional data transfer up to 1.7 MHz. The clock line (SCL) is also bidirectional, which allows for clock stretching.

Two board versions are available, one with isolated power and one without. The version with isolated power can deliver regulated, isolated power at 3.3 V or 5 V to the target thanks to the incorporation of the MPS MIE1W0505BGLVH (which you might recognize from the standalone power module we released a few months ago), while the simpler version without isolated power requires the two sides to be powered separately.

Schematic diagram of the Pololu I²C Isolator with Isolated Power.

Each version is optionally available with JST SH-style 4-pin connectors that are compatible with Qwiic and Stemma QT.

Introductory special discounts! Use coupon code I2CISOINTRO to get the versions without isolated power for $3.49 and use coupon code P5392P5393INTRO to get the versions with isolated power for $6.49.

Related products

	Pololu I²C Isolator with Isolated Power and Connectors, ISO1640, MIE1W0505BGLVH, 5V/3.3V, 200mA
	Pololu I²C Isolator with Isolated Power, ISO1640, MIE1W0505BGLVH, 5V/3.3V, 200mA
	Pololu I²C Isolator with Connectors, ISO1640
	Pololu I²C Isolator, ISO1640

We are excited to announce the release of two new higher-power reverse voltage protectors that can handle up to around 25 A continuous while protecting your 4V–60V circuit from accidental destruction from reverse voltage:

• Reverse protection only – This version protects against reverse voltage while still allowing reverse current, making it suitable for applications such as battery-powered motor control where delivering energy back into the battery is desirable.
• Reverse protection with reverse current blocking – This version acts as an ideal diode, preventing current from flowing from output to input.

These boards feature larger 5×6mm MOSFETs with lower on-resistances and more than double the current carrying ability of the versions we released a few months ago, which makes the overall module larger (but still compact!):

Pololu Reverse Voltage Protectors are available in 20A/25A (left) and 10A/12A (right) versions.

With these new releases, we now have six total reverse protector options (with or without reverse current blocking in three different power levels):

Introductory special discount! Use coupon code RVP25INTRO to get these new reverse voltage protectors for just $2.95!

Related products

	Pololu Reverse Voltage Protector, 4-60V, 25A
	Pololu Ideal Diode Reverse Voltage Protector, 4-60V, 25A
	Pololu Reverse Voltage Protector, 4-60V, 12A
	Pololu Ideal Diode Reverse Voltage Protector, 4-60V, 12A
	Pololu Reverse Voltage Protector, 4-60V, 10A
	Pololu Ideal Diode Reverse Voltage Protector, 4-60V, 10A