TLP781F(D4GRT7FD,F Equivalent & Substitute Parts

Part Overview

The TLP781F(D4GRT7FD,F is a photocoupler optoisolator manufactured by Toshiba Semiconductor and Storage, designed for high-voltage isolation applications. This component features transistor output configuration with 5000Vrms isolation voltage rating and is housed in a 4-DIP through-hole package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations where this isolation topology is required.

Substiute Parts

TLP781F(D4GRT7FD,F

Toshiba Semiconductor and StorageIn Stock: 1020TLP781F(D4GRT7FD,F Datasheet

Current PartRFQ

TLP785F(D4GRT7,F

Toshiba Semiconductor and StorageIn Stock: 2840TLP785F(D4GRT7,F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLP781F(D4GRT7FD,F is determined by strict equivalence across the following critical parameters:

• Isolation Voltage: 5000Vrms (primary isolation specification)
• Number of Channels: 1 (functional configuration)
• Output Type: Transistor (signal conditioning architecture)
• Current Transfer Ratio Range: 100% to 300% @ 5mA (optical coupling efficiency)
• Maximum Output Voltage: 80V (load voltage capability)
• Maximum Output Current: 50mA per channel (drive capacity)
• Package Type: 4-DIP through-hole (physical and electrical interface)
• Operating Temperature Range: -55°C ~ 110°C (environmental specification)

The TLP785F(D4GRT7,F meets all these criteria and qualifies as a direct functional equivalent. The primary distinction is product status: TLP785F is active production, whereas TLP781F is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The TLP785F(D4GRT7,F is the direct substitute for the obsolete TLP781F(D4GRT7FD,F. All electrical, thermal, and mechanical specifications are identical. The TLP785F maintains active production status with Toshiba Semiconductor and Storage, ensuring long-term availability and supply chain continuity.

Both parts carry identical compliance certifications: ECCN EAR99 and HTSUS 8541.49.8000. Pin configuration, package dimensions, and mounting methodology are fully compatible, permitting direct board-level substitution without circuit redesign.

For applications currently using TLP781F, transition to TLP785F is supported by complete parameter equivalence. No derating, circuit modification, or performance compromise is introduced by this substitution.

Frequently Asked Questions (FAQ)

Q: Can TLP785F(D4GRT7,F be used as a direct replacement for TLP781F(D4GRT7FD,F in existing designs?

A: Yes. All electrical specifications, isolation voltage, output current capacity, timing characteristics, and package dimensions are identical. Direct board-level substitution is supported without circuit modification.

Q: What is the primary reason for substitution?

A: The TLP781F is classified as obsolete. The TLP785F is the active production equivalent from the same manufacturer, ensuring continued availability and supply chain support.

Q: Are the 4-DIP packages physically interchangeable?

A: Yes. Both parts use 4-DIP (0.400", 10.16mm) through-hole packaging with identical pin assignments and board footprint requirements.

Q: Do both parts have the same isolation voltage rating?

A: Yes. Both the TLP781F and TLP785F are rated for 5000Vrms isolation voltage.

Q: Are there any differences in current transfer ratio specifications?

A: No. Both parts specify identical current transfer ratio ranges: 100% minimum to 300% maximum at 5mA input current.

Q: What is the maximum output current for each part?

A: Both parts support 50mA maximum output current per channel.

Q: Are the operating temperature ranges identical?

A: Yes. Both parts operate across the -55°C to 110°C temperature range.

Q: Do both parts have the same moisture sensitivity classification?

A: Yes. Both are classified as MSL 1 (Unlimited), indicating no moisture sensitivity restrictions.