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FODM2705

Public Made by Adom

by adom

onsemi Transistor, Photovoltaic Output Optoisolators, SOP-4-2.54mm. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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FODM2705

onsemi · Transistor, Photovoltaic Output Optoisolators · SOP-4-2.54mm

FODM2705 from onsemi, in a SOP-4-2.54mm. 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 passive One terminal of the infrared emitting diode pair; the FODM2705 uses two LEDs in inverse parallel for AC input, with forward current limited to IF(avg) 50 mA continuous and IF(pk) 1 A (1 s pulse, 300 pps).
2 CATHODE passive Other terminal of the infrared emitting diode pair; the FODM2705 uses two LEDs in inverse parallel for AC input, so either polarity may be applied within the emitter ratings (VR 6 V and IF(avg) 50 mA).
3 EMITTER passive Phototransistor emitter; the FODM2705 emitter-collector breakdown voltage (VECO) is rated at 7 V.
4 COLLECTOR passive Phototransistor collector; the FODM2705 collector-emitter voltage (VCEO) is rated at 40 V with continuous collector current IC of 80 mA.

Key specifications

Parameter Value
Manufacturer onsemi
Package SOP-4-2.54mm
Category Optoisolators
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
Collector-Emitter Breakdown Voltage (FODM2705) BVCEO 40 V IC = 1 mA, IF = 0 3
Emitter-Collector Breakdown Voltage BVECO 7 V IE = 100 A, IF = 0 3
Collector Dark Current ICEO 100 nA VCE = 40 V, IF = 0 3
DC Current Transfer Ratio (FODM2705) CTR 50 300 % IF = ±5 mA, VCE = 5 V 3
CTR Symmetry (FODM2705) 0.3 3 IF = ±5 mA, VCE = 5 V 3
Saturation Voltage (FODM2705) VCE(SAT) 0.3 V IF = ±10 mA, IC = 2 mA 3
Steady State Isolation Voltage VISO 3750 VACRMS 1 minute 3
Storage Temperature TSTG -40 125 °C 2
Operating Temperature TOPR -40 110 °C 2
Junction Temperature TJ -40 125 °C 2
Lead Solder Temperature TSOL 260 °C for 10 s 2
Continuous Forward Current IF (avg) 50 mA 2
Peak Forward Current IF (pk) 1 A 1 s pulse, 300 pps. 2
Reverse Voltage VR 6 V 2
Power Dissipation (emitter) PD 70 mW 2
Continuous Collector Current IC 80 mA 2
Collector-Emitter Voltage (FODM2701, FODM2705) VCEO 40 V 2
Emitter-Collector Voltage VECO 7 V 2
Power Dissipation (detector) PD 150 mW 2

CAD (KiCad official)

  • Symbol: FODM2705
  • Footprint: Package_SO:SOP-4_3.8x4.1mm_P2.54mm
  • 3D model: SOP-4-2.54mm (KiCad packages3D, STEP)
  • 3D model files: fodm2705-etched.step / fodm2705-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); fodm2705.step / fodm2705.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (9 pp, sha256 f02541b56f11842c, retrieved 2026-10-15, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-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