ACS713ELCTR-20A-T from Allegro MicroSystems LLC, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	IP+	passive	Input terminal for current being sampled; internally fused to pin 2 forming one side of the low-resistance (~1.2 mΩ) primary copper conduction path. Electrically isolated from the signal side (pins 5-8) up to 2.1 kVRMS.
2	IP+	passive	Input terminal for current being sampled; internally fused to pin 1. Together pins 1-2 form the positive side of the primary current conduction path.
3	IP-	passive	Output terminal for current being sampled; internally fused to pin 4 forming the return side of the primary copper conduction path. Isolated from the signal side up to 2.1 kVRMS.
4	IP-	passive	Output terminal for current being sampled; internally fused to pin 3. Together pins 3-4 form the return side of the primary current path.
5	GND	power_in	Signal ground terminal for the Hall sensor and output amplifier circuitry. Reference for VCC, VIOUT, and FILTER.
6	FILTER	passive	Terminal for external capacitor (CF) that sets device bandwidth together with the ~1.7 kΩ internal filter resistance (RF(INT)). Larger CF lowers bandwidth and reduces output noise.
7	VIOUT	output	Analog output signal. Voltage is proportional to sampled DC primary current with sensitivity 185 mV/A (20A variant); quiescent output (IP = 0 A) is VCC × 0.1. Output source/sink capability 3 mA / 10 mA.
8	VCC	power_in	Device power supply terminal. 5.0 V nominal (4.5 to 5.5 V), typical supply current 10 mA (13 mA max). Output is ratiometric to VCC. Bypass with a 0.1 µF ceramic capacitor to GND.

Key specifications

Parameter	Value
Manufacturer	Allegro MicroSystems LLC
Package	SOIC-8
Category	Sensor
Pins	8

Ordering variants

ACS713ELCTR-20A-T
ACS713ELCTR-20A-TELCTR-30A-T

CAD (KiCad official)

Symbol: ACS713ELCTR-20A-T
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Allegro MicroSystems LLC datasheet (15 pp, sha256 50e71d5195b1c939, retrieved 2026-08-17, tier: lcsc)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF