LTV-352T-C Equivalent & Substitute Parts

Part Overview

The LTV-352T-C is a single-channel optoisolator with Darlington output manufactured by Lite-On Inc. This component provides 3750Vrms isolation voltage and is designed for DC input applications requiring high-speed switching with Darlington output configuration. The part is currently in active production status. Identifying equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and support component availability across different packaging and distribution formats.

Key Parameters

Parameter	Value
Isolation Voltage	3750Vrms
Number of Channels	1
Output Type	Darlington
Current Transfer Ratio (Min)	1000% @ 1mA
Voltage - Output (Max)	300V
Current - Output / Channel	150mA
Vce Saturation (Max)	1.2V
Operating Temperature Range	-55°C ~ 110°C
Mounting Type	Surface Mount
Package / Case	4-SMD, Gull Wing
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the LTV-352T-C are identified based on strict electrical and mechanical parameter matching. The critical parameters that define substitutability are:

Isolation voltage: 3750Vrms
Single channel configuration
Darlington output type
Current transfer ratio minimum: 1000% @ 1mA
Maximum output voltage: 300V
Maximum output current per channel: 150mA
Maximum Vce saturation: 1.2V
Operating temperature range: -55°C ~ 110°C
Surface mount technology with 4-SMD gull wing package configuration
RoHS3 compliance and MSL Level 1 rating

Parts meeting all these parameters are classified as parametric equivalents. Variations in packaging format (Cut Tape, Digi-Reel, or Tape & Reel) and supplier device package designation (4-SOP or 4-MFP) do not affect electrical substitutability when all core parameters align.

Parameter Comparison

Parameter	LTV-352T-C (Main)	LTV-352T (Lite-On)	FODM352R2 (onsemi)
Manufacturer	Lite-On Inc.	Lite-On Inc.	onsemi
Isolation Voltage	3750Vrms	3750Vrms	3750Vrms
Number of Channels	1	1	1
Output Type	Darlington	Darlington	Darlington
Current Transfer Ratio (Min)	1000% @ 1mA	1000% @ 1mA	1000% @ 1mA
Voltage - Output (Max)	300V	300V	300V
Current - Output / Channel	150mA	150mA	150mA
Vce Saturation (Max)	1.2V	1.2V	1.2V
Operating Temperature	-55°C ~ 110°C	-55°C ~ 110°C	-55°C ~ 110°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing
Supplier Device Package	4-SOP	4-SOP	4-MFP
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active

Engineering Selection Recommendations

All three parts—LTV-352T-C, LTV-352T, and FODM352R2—are active production components with full RoHS3 compliance and MSL Level 1 rating, indicating unlimited moisture sensitivity protection. Selection between these parts should be based on:

LTV-352T (Lite-On Inc.): This part is a parametric equivalent to LTV-352T-C with identical electrical specifications. The primary difference is packaging format availability (Cut Tape and Digi-Reel options). This part offers the highest inventory availability at 87,100 units and maintains the same 4-SOP supplier device package as the main part.

FODM352R2 (onsemi): This part is a parametric equivalent manufactured by onsemi with identical electrical performance across all critical parameters. The supplier device package designation is 4-MFP rather than 4-SOP, though both represent equivalent 4-SMD gull wing surface mount configurations. Inventory availability is 2,296 units. This part provides cross-manufacturer substitution capability.

All three parts carry the same ECCN (EAR99) and HTSUS (8541.49.8000) classifications, confirming regulatory equivalence for export and tariff purposes.

Frequently Asked Questions (FAQ)

Q: Can LTV-352T be used as a direct replacement for LTV-352T-C?

A: Yes. LTV-352T is a parametric equivalent with identical electrical specifications, isolation voltage, output current rating, and operating temperature range. The difference is packaging format; LTV-352T is available in Cut Tape and Digi-Reel formats in addition to standard packaging.

Q: What is the difference between 4-SOP and 4-MFP package designations?

A: Both designations refer to 4-pin surface mount packages with gull wing leads in the same physical footprint (4-SMD, Gull Wing). The different supplier device package names reflect manufacturer nomenclature but do not indicate functional or mechanical differences relevant to PCB assembly or electrical performance.

Q: Is FODM352R2 from onsemi electrically compatible with LTV-352T-C?

A: Yes. FODM352R2 meets all critical electrical parameters: 3750Vrms isolation, 1000% minimum current transfer ratio, 300V maximum output voltage, 150mA output current, and 1.2V maximum Vce saturation. It operates across the same temperature range and carries equivalent compliance certifications.

Q: Are there any compliance or regulatory differences between these parts?

A: No. All three parts are ROHS3 compliant, carry MSL Level 1 rating, and share identical ECCN and HTSUS classifications. They are regulatory equivalents for procurement and export purposes.

Q: Which part should be selected for new designs?

A: Selection should be based on supply chain availability and packaging preference. LTV-352T offers the highest inventory (87,100 units) and maintains the same supplier device package as LTV-352T-C. FODM352R2 provides cross-manufacturer redundancy with equivalent electrical performance.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes, provided the PCB footprint accommodates the 4-SMD gull wing package. All three parts share identical physical dimensions and pin configurations for this package type.

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