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BL3H7B

Public Made by Adom

by adom

GME(银河微电) , SSOP-4. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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BL3H7B

GME(银河微电) · IC · SSOP-4

BL3H7B from GME(银河微电), in a SSOP-4. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 Anode input LED anode of the input side; forward current IF max 50 mA (IF = 5 mA for CTR test), VF 1.2 V typ / 1.4 V max at IF = 20 mA.
2 Cathode input LED cathode of the input side; reverse voltage VR max 6 V.
3 Emitter passive Phototransistor emitter; emitter-collector voltage VECO max 7 V.
4 Collector passive Phototransistor collector; VCEO max 80 V and collector current IC max 50 mA.

Key specifications

Parameter Value
Manufacturer GME(银河微电)
Package SSOP-4
Category
Pins 4

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Current Transfer Ratio (rank B, per rank table) CTR 130 260 % IF = 5 mA, VCE = 5V 4
Collector Current IC 2.5 30 mA IF = 5mA, VCE = 5V 3
Collector-Emitter Breakdown Voltage BVCEO 80 V IC = 0.1mA, IF = 0 3
Emitter-Collector Breakdown Voltage BVECO 7 V IE = 10μA, IF = 0 3
Forward Voltage VF 1.2 1.4 V IF = 20mA 3
Peak Forward Voltage VFM 3 V IFM = 0.5A 3
Reverse Current IR 10 μA VR = 4V 3
Input Capacitance Cin 30 250 pF VR = 0V, f = 1kHz 3
Collector-Emitter Dark Current ICEO 100 nA VCE = 20V, IF = 0 3
Collector-Emitter Saturation Voltage VCE(sat) 0.1 0.2 V IF = 20mA, IC = 1mA 3
Isolation Current Risc 2 μA DC6000V, 40~60% R.H. 3
Floating Capacitance CIO 0.6 1 pF VIO = 0, f = 1MHz 3
Turn On Time Ton 4 18 μs VCE=2V, RL= 100Ω, IC=2mA 4
Turn Off Time Toff 3 18 μs 4
Cut-off Frequency fC 80 kHz VCE = 5V, IC = 2mA, RL=100Ω, -3dB 4
Forward Current IF 50 mA 2
Peak Forward Current IFM 1 A Pulse width ≤1μs, duty ratio 0.001 2
Reverse Voltage VR 6 V 2
Input Power Dissipation PD 70 mW 2
Collector Power Dissipation PC 150 mW 2
Collector Current IC 50 mA 2
Collector-Emitter Voltage VCEO 80 V 2
Emitter-Collector Voltage VECO 7 V 2
Total Power Dissipation PTOT 200 mW 3
Isolation Voltage VISO 3750 Vrms AC for 1 minute, 40 to 60% RH 3
Rated Impulse Isolation Voltage VIOTM 5000 V 3
Rated Repetitive Peak Isolation Voltage VIORM 600 V 3
Operating Temperature TOPR -55 110 °C 3
Storage Temperature Range TSTG -55 125 °C 3
Soldering Temperature TSOL 260 °C For 10 seconds 3
Thermal Resistance Junction-to-Air RθJA 430 °C/W 3
Thermal Resistance Junction-to-Case RθJC 350 °C/W 3
Thermal Resistance Junction-to-Lead RθJL 368 °C/W 3

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin  Terminals: Matte tin-plated leads; solderability-per MIL-STD-202, Method 208 1

CAD (KiCad official)

  • Symbol: BL3H7B
  • Footprint: Package_SO:SSOP-4_4.4x2.6mm_P1.27mm
  • 3D model: SSOP-4, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.75 mm nominal SSOP height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
  • 3D model files: bl3h7b-etched.step / bl3h7b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bl3h7b.step / bl3h7b.glb are the bare package body.

Provenance

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

  • Datasheet: GME(银河微电) datasheet (9 pp, sha256 bb544b4d57ab17be, retrieved 2026-11-03, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF