TLP781F(BLL-LF7,F) Equivalent & Substitute Parts

Part Overview

The TLP781F(BLL-LF7,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 signal transmission circuits. The part is currently classified as obsolete, making identification of equivalent and substitute components essential for ongoing design support and production continuity.

Substiute Parts

TLP781F(BLL-LF7,F)

Toshiba Semiconductor and StorageIn Stock: 973TLP781F(BLL-LF7,F) Datasheet

Current PartRFQ

TLP785F(BLL-F7,F

Toshiba Semiconductor and StorageIn Stock: 956TLP785F(BLL-F7,F Datasheet

DirectRFQ

TLP785(BLL-LF6,F

Toshiba Semiconductor and StorageIn Stock: 1111TLP785(BLL-LF6,F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TLP781F(BLL-LF7,F) are identified based on electrical and mechanical parameter compatibility. The critical parameters determining substitution eligibility are:

• Single-channel configuration
• 5000Vrms isolation voltage
• Current transfer ratio range: 200% to 400% @ 5mA
• Transistor output topology
• Maximum output voltage: 80V
• Maximum output current: 50mA per channel
• DC input type
• Operating temperature range: -55°C to 110°C

Substitute parts maintain identical electrical performance specifications while differing in packaging format or product status. The TLP785F series meets all electrical requirements and represents the active product line replacement for the obsolete TLP781F.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using the obsolete TLP781F(BLL-LF7,F), the following selection criteria apply:

Surface Mount Applications: The TLP785(BLL-LF6,F) is the direct equivalent, maintaining identical electrical specifications and surface mount packaging format. This part is currently in active production status, ensuring long-term availability and supply chain stability.

Through Hole Applications: The TLP785F(BLL-F7,F) provides electrical equivalence with through-hole mounting compatibility. This configuration accommodates legacy PCB designs requiring DIP package format while maintaining all electrical performance parameters.

Both substitute parts carry identical ECCN and HTSUS classifications as the original component, ensuring compliance consistency for export and procurement documentation.

Frequently Asked Questions (FAQ)

Q: Can TLP785(BLL-LF6,F) directly replace TLP781F(BLL-LF7,F) in surface mount applications?

A: Yes. Both components share identical electrical specifications including isolation voltage, current transfer ratio, output voltage and current ratings, and operating temperature range. The primary difference is product status: TLP785(BLL-LF6,F) is active production while TLP781F(BLL-LF7,F) is obsolete. PCB footprint compatibility must be verified for the specific 4-SMD Gull Wing package variant.

Q: What is the difference between TLP785F(BLL-F7,F) and TLP785(BLL-LF6,F)?

A: The electrical specifications are identical. The primary distinction is mounting type: TLP785F(BLL-F7,F) uses through-hole 4-DIP packaging, while TLP785(BLL-LF6,F) uses surface mount 4-SMD packaging. Selection depends on PCB assembly requirements and design constraints.

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

A: No. All three parts share identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications. Moisture sensitivity level is 1 (Unlimited) for all variants.

Q: Can I use TLP785F(BLL-F7,F) in a surface mount design?

A: No. TLP785F(BLL-F7,F) is packaged in 4-DIP through-hole format and is not suitable for surface mount PCB assembly. Use TLP785(BLL-LF6,F) for surface mount applications.

Q: What parameters must remain constant for substitution?

A: Isolation voltage (5000Vrms), current transfer ratio range (200-400% @ 5mA), output type (transistor), maximum output voltage (80V), maximum output current (50mA), and operating temperature range (-55°C to 110°C) must all remain unchanged for functional equivalence.