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Generated by kicad-footprint-generator · KiCad file format 20260206

Name	Last commit message	Last updated
docs	Publish 0.1.0 · Ray	1d ago
viewers	ltv-357t: viewers · Ray	1d ago
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ltv-357t-etched.step	ltv-357t: factory component page (tier=lcsc) · Ray	1d ago
ltv-357t-hero.glb	ltv-357t: hero GLB from the etched model (keeps the MPN mark) · Ray	1d ago
ltv-357t-hero.overlay.json	Publish 0.1.0 · Ray	1d ago
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ltv-357t.step	Publish 0.1.0 · Ray	1d ago
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LTV-357T

Lite-On · Pre-ordered Products · SOP-4-2.54mm

LTV-357T from Lite-On, 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	LED anode of the input side; forward current IF max 50 mA, reverse voltage VR max 6 V, VF typ 1.2 V at IF=20 mA.
2	Cathode	passive	LED cathode of the input side; return for the forward current (IF max 50 mA).
3	Emitter	passive	Phototransistor emitter; emitter-collector voltage VECO max 6 V.
4	Collector	passive	Phototransistor collector; VCEO max 35 V and collector current IC max 50 mA.

Key specifications

Parameter	Value
Manufacturer	Lite-On
Package	SOP-4-2.54mm
Category	Solders / Accessories / Batteries
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
Forward Current	IF			50	mA		5
Reverse Voltage	VR			6	V		5
Power Dissipation	P			70	mW		5
Junction Temperature (input section)	TJ			125	oC		5
Collector - Emitter Voltage	VCEO			35	V		5
Emitter - Collector Voltage	VECO			6	V		5
Collector Current	IC			50	mA		5
Collector Power Dissipation	PC			150	mW		5
Junction Temperature (output section)	TJ			125	oC		5
Total Power Dissipation	Ptot			170	mW		5
Isolation Voltage	Viso			3750	Vrms	AC for 1 minute, R.H. = 40~60%	5
Operating Temperature	Topr	-55		110	oC		5
Storage Temperature	Tstg	-55		150	oC		5
Soldering Temperature	Tsol			260	oC	For 10 seconds	5
Forward Voltage	VF		1.2	1.4	V	IF=20mA	6
Reverse Current	IR			10	µA	VR=4V	6
Terminal Capacitance	Ct		30	250	pF	V=0, f=1KHz	6
Collector Dark Current	ICEO			100	nA	VCE=20V, IF=0	6
Collector-Emitter Breakdown Voltage	BVCEO	35			V	IC=0.1mA, IF=0	6
Emitter-Collector Breakdown Voltage	BVECO	6			V	IE=10A, IF=0	6
Collector Current	IC	2.5		30	mA	IF=5mA	6
Current Transfer Ratio	CTR	50		600	%	VCE=5V	6
Collector-Emitter Saturation Voltage	VCE(sat)			0.2	V	IF=20mA, IC=1mA	6
Floating Capacitance	Cf		0.6	1	pF	V=0, f=1MHz	6
Response Time (Rise)	tr		4	18	µs	VCE=2V, IC=2mA, RL=100Ω	6
Response Time (Fall)	tf		3	18	µs	VCE=2V, IC=2mA, RL=100Ω	6

CAD (KiCad official)

Symbol: LTV-357T
Footprint: Package_SO:SOP-4_3.8x4.1mm_P2.54mm
3D model: SOP-4-2.54mm (KiCad packages3D, STEP)
3D model files: ltv-357t-etched.step / ltv-357t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ltv-357t.step / ltv-357t.glb are the bare package body.

Provenance

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

Datasheet: Lite-On datasheet (13 pp, sha256 2947d9a7b0ff5ad4, retrieved 2026-10-21, 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