TLP781(GRL-LF6,F) Equivalent & Substitute Parts

Part Overview

The TLP781(GRL-LF6,F) is a single-channel optoisolator with transistor output manufactured by Toshiba Semiconductor and Storage. This component provides 5000Vrms isolation and is designed for DC input applications requiring galvanic isolation in surface mount configurations. The part is currently classified as obsolete, making identification of equivalent and substitute components essential for ongoing system support, design updates, and procurement continuity.

Substiute Parts

TLP781(GRL-LF6,F)

Toshiba Semiconductor and StorageIn Stock: 1205TLP781(GRL-LF6,F) Datasheet

Current PartRFQ

TLP785(GRL-TP6,F

Toshiba Semiconductor and StorageIn Stock: 2514TLP785(GRL-TP6,F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLP781(GRL-LF6,F) is determined by strict equivalence across the following critical parameters:

• Isolation Voltage: 5000Vrms (primary isolation specification)
• Number of Channels: 1 (single-channel configuration)
• Output Type: Transistor (functional output stage)
• Current Transfer Ratio Range: 100% to 200% @ 5mA (input-to-output transfer characteristics)
• Maximum Output Voltage: 80V (output stage voltage rating)
• Maximum Output Current: 50mA per channel (output current capability)
• Package Type: 4-SMD, Gull Wing (physical and electrical interface)
• Operating Temperature Range: -55°C ~ 110°C (thermal operating envelope)

The TLP785(GRL-TP6,F) meets all these criteria and is classified as an active product, making it a direct functional equivalent for the obsolete TLP781(GRL-LF6,F).

Parameter Comparison

Engineering Selection Recommendations

The TLP785(GRL-TP6,F) is the primary substitute for the obsolete TLP781(GRL-LF6,F). Both components are manufactured by Toshiba Semiconductor and Storage and share identical electrical specifications, timing characteristics, and package configurations. The TLP785(GRL-TP6,F) maintains active product status, ensuring ongoing availability and supply chain support.

Both parts carry identical compliance certifications (ECCN: EAR99, HTSUS: 8541.49.8000) and moisture sensitivity ratings (MSL 1 - Unlimited), confirming regulatory and environmental equivalence. The TLP785(GRL-TP6,F) is suitable for direct replacement in applications currently using the TLP781(GRL-LF6,F) without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can the TLP785(GRL-TP6,F) be used as a direct replacement for the TLP781(GRL-LF6,F)?

A: Yes. Both components share identical electrical specifications, timing parameters, output ratings, and package configurations. The TLP785(GRL-TP6,F) is an active product, making it the recommended substitute for the obsolete TLP781(GRL-LF6,F).

Q: Are there any differences in isolation voltage between these parts?

A: No. Both the TLP781(GRL-LF6,F) and TLP785(GRL-TP6,F) provide 5000Vrms isolation voltage, meeting identical galvanic isolation requirements.

Q: Do these parts require different PCB layouts or footprints?

A: No. Both components use the 4-SMD, Gull Wing package configuration, ensuring identical PCB footprints and assembly compatibility.

Q: What is the current transfer ratio specification for these optoisolators?

A: Both parts specify a current transfer ratio range of 100% to 200% at 5mA input current, defining the input-to-output transfer characteristics.

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

A: No. Both components carry identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications, confirming regulatory equivalence.

Q: What is the maximum output current capability?

A: Both the TLP781(GRL-LF6,F) and TLP785(GRL-TP6,F) support a maximum output current of 50mA per channel.