SFH692AT Equivalent & Substitute Parts

Part Overview

The SFH692AT is an optoisolator with Darlington output manufactured by Vishay Semiconductor Opto Division. It provides 3750Vrms isolation voltage in a 4-SOP surface mount package. The device is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and procurement continuity. Active alternatives with compatible electrical and mechanical specifications are available to maintain system functionality.

Substiute Parts

SFH692AT

Vishay Semiconductor Opto DivisionIn Stock: 1907SFH692AT Datasheet

Current PartRFQ

LTV-352T

Lite-On Inc.In Stock: 87172LTV-352T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SFH692AT is determined by the following critical parameters:

• Isolation Voltage: 3750Vrms minimum requirement
• Number of Channels: Single channel configuration
• Output Type: Darlington output stage
• Package Type: 4-SOP surface mount with gull wing leads
• Current Transfer Ratio: Minimum 1000% @ 1mA
• Maximum Output Voltage: 300V capability
• Regulatory Compliance: ROHS3 compliance and REACH unaffected status

The LTV-352T from Lite-On Inc. meets all specified electrical and mechanical parameters for direct substitution. Both devices share identical isolation voltage, channel count, output type, package configuration, and regulatory certifications.

Parameter Comparison

Engineering Selection Recommendations

The LTV-352T is a direct substitute for the obsolete SFH692AT. Both devices maintain identical isolation voltage, channel configuration, output type, and package specifications. The LTV-352T is currently in active production status, ensuring long-term availability and supply chain continuity.

Both parts carry ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. The LTV-352T offers an extended operating temperature range (-55°C ~ 110°C versus -55°C ~ 100°C) and higher maximum output current capability (150mA versus 50mA), providing additional design margin in applications where these parameters are relevant.

Frequently Asked Questions (FAQ)

Q: Can the LTV-352T directly replace the SFH692AT in existing designs?

A: Yes. Both devices share identical isolation voltage (3750Vrms), single-channel Darlington output configuration, 4-SOP package type, and regulatory certifications. Pin-to-pin compatibility and electrical performance are equivalent for standard applications.

Q: What are the differences between these two optoisolators?

A: The LTV-352T provides higher maximum output current (150mA versus 50mA) and an extended operating temperature range to 110°C. The Vce saturation specification is slightly higher (1.2V versus 1V). These differences represent design improvements in the active substitute part.

Q: Why is the SFH692AT listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The LTV-352T from Lite-On Inc. is the recommended active alternative with equivalent specifications.

Q: Are there any package or pinout differences?

A: No. Both devices use 4-SMD, Gull Wing package configuration with identical 4-SOP footprint (2.54mm pitch). PCB layout and assembly processes remain unchanged.

Q: What compliance certifications apply to both parts?

A: Both the SFH692AT and LTV-352T are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.