TLP781(D4-BL-TP6,F Equivalent & Substitute Parts

Part Overview

The TLP781(D4-BL-TP6,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 listed as obsolete, making identification of equivalent and substitute components necessary for ongoing design support and production continuity.

Substiute Parts

TLP781(D4-BL-TP6,F

Toshiba Semiconductor and StorageIn Stock: 889TLP781(D4-BL-TP6,F Datasheet

Current PartRFQ

TLP785(D4BL-T6,F

Toshiba Semiconductor and StorageIn Stock: 1161TLP785(D4BL-T6,F Datasheet

DirectRFQ

TLP785F(BL-TP7,F

Toshiba Semiconductor and StorageIn Stock: 1027TLP785F(BL-TP7,F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TLP781(D4-BL-TP6,F is determined by the following critical parameters:

Electrical Equivalence Criteria:

• Single channel configuration
• 5000Vrms isolation voltage
• Current Transfer Ratio range: 200% to 600% @ 5mA
• Transistor output type
• Maximum output voltage: 80V
• Maximum output current: 50mA
• DC input type
• Operating temperature range: -55°C ~ 110°C

Mechanical Compatibility Criteria:

• Surface mount package requirement (4-SMD, Gull Wing)

Two substitute parts meet these criteria with variations in product status and package form factor.

Parameter Comparison

Engineering Selection Recommendations

TLP785F(BL-TP7,F - Recommended Primary Substitute

This part provides complete electrical and mechanical equivalence to the TLP781(D4-BL-TP6,F. Both components use identical surface mount packaging (4-SMD, Gull Wing) and share all critical electrical parameters. The TLP785F(BL-TP7,F maintains active product status with Toshiba, ensuring ongoing availability and manufacturing support. This substitute requires no circuit board redesign and provides direct pin-compatible replacement capability.

TLP785(D4BL-T6,F - Alternative with Package Modification

This part provides complete electrical equivalence but uses through-hole packaging (4-DIP) instead of surface mount. Selection of this substitute requires circuit board redesign to accommodate the different package form factor. The TLP785(D4BL-T6,F maintains active product status and represents a viable alternative when surface mount compatibility is not a constraint.

Frequently Asked Questions (FAQ)

Q: Can TLP785F(BL-TP7,F directly replace TLP781(D4-BL-TP6,F without circuit board modification?

A: Yes. Both parts use 4-SMD, Gull Wing surface mount packaging with identical pin configurations and electrical specifications. Direct substitution on existing circuit boards is possible without layout changes.

Q: What is the primary reason for substituting the TLP781(D4-BL-TP6,F?

A: The TLP781(D4-BL-TP6,F is listed as obsolete. The recommended substitutes maintain active product status with Toshiba, ensuring long-term availability and manufacturing continuity.

Q: Are there electrical performance differences between the main part and substitute parts?

A: No. All three parts share identical electrical specifications including isolation voltage, current transfer ratio, output voltage and current ratings, and timing characteristics.

Q: Why is TLP785(D4BL-T6,F listed as an alternative if it uses different packaging?

A: While TLP785(D4BL-T6,F uses through-hole packaging instead of surface mount, it provides complete electrical equivalence. This part is suitable for applications where circuit board redesign is acceptable or where through-hole mounting is preferred.

Q: What certifications apply to these optoisolators?

A: All three parts carry ECCN classification EAR99 and HTSUS code 8541.49.8000. Moisture Sensitivity Level is 1 (Unlimited) for all parts.