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TLP781F(TP7,F) Equivalent & Substitute Parts
Part Overview
The TLP781F(TP7,F) is a single-channel optoisolator with transistor output manufactured by Toshiba Semiconductor and Storage. This component provides 5000Vrms isolation voltage in a 4-SMD surface mount package. The part is currently classified as obsolete, making identification of equivalent and substitute components essential for ongoing design support and production continuity. Active alternatives with identical or compatible electrical and mechanical specifications are available from both Toshiba and alternative manufacturers.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Isolation Voltage | 5000Vrms |
| Number of Channels | 1 |
| Output Type | Transistor |
| Current Transfer Ratio (Min) | 50% @ 5mA |
| Current Transfer Ratio (Max) | 600% @ 5mA |
| Maximum Output Voltage | 80V |
| Maximum Output Current | 50mA |
| Operating Temperature Range | -55°C to 110°C |
| Package Type | 4-SMD, Gull Wing |
| Mounting Type | Surface Mount |
| Input Type | DC |
Substitute Part Grouping Explanation
Substitution eligibility for the TLP781F(TP7,F) is determined by strict equivalence across the following critical parameters:
- Isolation voltage: 5000Vrms (mandatory match)
- Number of channels: 1 (mandatory match)
- Output type: Transistor (mandatory match)
- Current transfer ratio range: 50% to 600% @ 5mA (mandatory match)
- Maximum output voltage: 80V (mandatory match)
- Maximum output current: 50mA (mandatory match)
- Operating temperature range: -55°C to 110°C (mandatory match)
- Package and mounting: 4-SMD, Gull Wing, Surface Mount (mandatory match)
- Input type: DC (mandatory match)
Substitute parts are grouped into two categories: direct Toshiba equivalents (TLP785 series variants) and parametric equivalents from alternative manufacturers (Everlight EL816 series). All listed substitutes maintain full electrical and mechanical compatibility with the original TLP781F(TP7,F) specification.
Parameter Comparison
| Part Number | Manufacturer | Status | Isolation (Vrms) | CTR Min @ 5mA | CTR Max @ 5mA | Vout Max (V) | Iout Max (mA) | Temp Range (°C) | Package | Inventory |
|---|---|---|---|---|---|---|---|---|---|---|
| TLP781F(TP7,F) | Toshiba | Obsolete | 5000 | 50% | 600% | 80 | 50 | -55 to 110 | 4-SMD, Gull Wing | 810 |
| TLP785F(TP7,F) | Toshiba | Active | 5000 | 50% | 600% | 80 | 50 | -55 to 110 | 4-SMD, Gull Wing | 828 |
| TLP785(D4-TP6,F) | Toshiba | Active | 5000 | 50% | 600% | 80 | 50 | -55 to 110 | 4-SMD, Gull Wing | 1161 |
| TLP785(D4GH-T6,F) | Toshiba | Active | 5000 | 50% | 600% | 80 | 50 | -55 to 110 | 4-SMD, Gull Wing | 5006 |
| TLP785(D4GL-T6,F) | Toshiba | Active | 5000 | 50% | 600% | 80 | 50 | -55 to 110 | 4-SMD, Gull Wing | 4710 |
| TLP785(TP6,F) | Toshiba | Active | 5000 | 50% | 600% | 80 | 50 | -55 to 110 | 4-SMD, Gull Wing | 7400 |
| TLP785F(D4-TP7,F) | Toshiba | Active | 5000 | 50% | 600% | 80 | 50 | -55 to 110 | 4-SMD, Gull Wing | 992 |
| EL816(S)(TD) | Everlight | Active | 5000 | 50% | 600% | 80 | 50 | -55 to 110 | 4-SMD, Gull Wing | 882 |
| EL816(S)(TD)-V | Everlight | Active | 5000 | 50% | 600% | 80 | 50 | -55 to 110 | 4-SMD, Gull Wing | 828 |
| EL816(S)(TU)-V | Everlight | Active | 5000 | 50% | 600% | 80 | 50 | -55 to 110 | 4-SMD, Gull Wing | 674 |
| EL816(S1)(TD) | Everlight | Active | 5000 | 50% | 600% | 80 | 50 | -55 to 110 | 4-SMD, Gull Wing | 651 |
Engineering Selection Recommendations
All listed substitute parts maintain full parametric equivalence to the TLP781F(TP7,F) across electrical and mechanical specifications. Selection among available options should be based on the following factors:
Toshiba TLP785 Series (Direct Manufacturer Equivalents): These parts represent the primary replacement path from the same manufacturer. The TLP785(D4GH-T6,F) and TLP785(D4GL-T6,F) variants are available in Tape & Reel packaging with RoHS Compliant status and Not Applicable MSL rating, indicating modern manufacturing processes. The TLP785(TP6,F) variant offers the highest inventory availability (7400 units) with RoHS Compliant certification and MSL 1 rating.
Everlight EL816 Series (Alternative Manufacturer Equivalents): The EL816 variants from Everlight Electronics provide parametric equivalence with ROHS3 Compliant certification and MSL 1 rating. These parts are suitable for applications where multi-source qualification is required or where alternative manufacturer sourcing is preferred.
Product Status Consideration: All substitute parts listed carry Active product status, ensuring long-term availability and manufacturing support. The original TLP781F(TP7,F) is classified as Obsolete and should not be specified for new designs.
Frequently Asked Questions (FAQ)
Q: Can I directly replace TLP781F(TP7,F) with any TLP785 variant?
A: Yes. All TLP785 variants listed maintain identical electrical parameters (5000Vrms isolation, 50-600% CTR, 80V max output, 50mA max output current) and mechanical specifications (4-SMD Gull Wing package). The suffix designations (TP6, TP7, D4-TP6, D4-TP7, D4GH-T6, D4GL-T6) indicate packaging format and tape configuration differences but do not affect functional compatibility.
Q: What is the difference between Toshiba TLP785 and Everlight EL816 substitutes?
A: Both maintain full parametric equivalence. The primary differences are manufacturer source and compliance certifications. Toshiba TLP785 variants carry MSL 1 or Not Applicable ratings depending on packaging format. Everlight EL816 variants carry ROHS3 Compliant and MSL 1 ratings. Selection depends on supply chain requirements and multi-source qualification needs.
Q: Are there packaging differences between substitute options?
A: All substitutes use 4-SMD Gull Wing surface mount packages. Variants differ in tape configuration (Tape & Reel vs. standard packaging) and MSL ratings. TLP785(D4GH-T6,F) and TLP785(D4GL-T6,F) are supplied in Tape & Reel format with Not Applicable MSL. Other variants use standard packaging with MSL 1 rating. These differences do not affect electrical performance or PCB layout compatibility.
Q: Which substitute offers the best inventory availability?
A: TLP785(TP6,F) provides the highest inventory level at 7400 units. TLP785(D4GH-T6,F) offers 5006 units. Both are suitable for high-volume production requirements.
Q: Can I use EL816 parts in existing designs qualified for TLP781F?
A: Yes, provided your design qualification process permits alternative manufacturer substitution. EL816 variants maintain identical electrical and mechanical specifications. Verify that your application's compliance and certification requirements (RoHS, ROHS3, MSL) are satisfied by the selected EL816 variant.
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