component

LOC117

Public Unreviewed

by Ray

Littelfuse IXYS Transistor, Photovoltaic Output Optoisolators, DIP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentoptoisolatorsloc117
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Contents

README

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LOC117

Littelfuse IXYS · Transistor, Photovoltaic Output Optoisolators · DIP-8

LOC117 from Littelfuse IXYS, in a DIP-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 -LED passive LED cathode. Return path for the infrared emitter drive current (IF = 2-10 mA typical, VF ~1.2 V). Reverse voltage limited to 5 V max.
2 +LED passive LED anode. Drive current source for the internal infrared emitter (IF = 2-10 mA typical, 100 mA absolute max, 1 A peak 10 ms).
3 C1 passive Cathode of servo (feedback) photodiode PD1. Photodiode is typically reverse-biased (VC1-A1 up to 15 V) to generate the feedback photocurrent IC1 used to servo the LED drive current. Servo gain K1 = IC1/IF = 0.008-0.030.
4 A1 passive Anode of servo (feedback) photodiode PD1. Return path for the feedback photodiode current used in the servo loop.
5 A2 passive Anode of output photodiode PD2. Return path for the isolated output photodiode current on the secondary (output) side of the isolation barrier.
6 C2 passive Cathode of output photodiode PD2. Photodiode is typically reverse-biased (VC2-A2 up to 15 V) to produce the linear output photocurrent IC2. Forward gain K2 = IC2/IF = 0.006-0.030; transfer gain K3 = K2/K1 = 0.887-1.072.
7 N/C unconnected No internal connection. Leave floating or tie to output-side ground for creepage/clearance.
8 N/C unconnected No internal connection. Leave floating or tie to output-side ground for creepage/clearance.

Key specifications

Parameter Value
Manufacturer Littelfuse IXYS
Package DIP-8
Category Optoisolators
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • LOC117
  • LOC117P
  • LOC117PTR
  • LOC117S
  • LOC117STR

CAD (KiCad official)

  • Symbol: LOC117
  • Footprint: Package_DIP:DIP-8_W7.62mm
  • 3D model: DIP-8 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Littelfuse IXYS datasheet (None pp, sha256 bf21060ae6bcbc90, 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