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TLP781(D4GRL-TP6,F Optoisolator Equivalent & Substitute Parts
Part Overview
The TLP781(D4GRL-TP6,F is a transistor output optoisolator manufactured by Toshiba Semiconductor and Storage, designed for high-voltage isolation applications requiring 5000Vrms isolation rating. This component features a single channel with 4-SMD surface mount packaging and gull wing lead configuration. The part is currently classified as obsolete, making identification of active equivalent and substitute components essential for ongoing design support and procurement continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | TLP781(D4GRL-TP6,F |
| Manufacturer | Toshiba Semiconductor and Storage |
| Category | Optoisolators |
| Number of Channels | 1 |
| Voltage - Isolation | 5000Vrms |
| Current Transfer Ratio (Min) | 100% @ 5mA |
| Current Transfer Ratio (Max) | 200% @ 5mA |
| Output Type | Transistor |
| Voltage - Output (Max) | 80V |
| Current - Output / Channel | 50mA |
| Operating Temperature | -55°C ~ 110°C |
| Package / Case | 4-SMD, Gull Wing |
| Mounting Type | Surface Mount |
| Product Status | Obsolete |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the TLP781(D4GRL-TP6,F is determined by strict alignment of the following critical parameters:
Mandatory Matching Parameters:
- Voltage - Isolation: 5000Vrms
- Number of Channels: 1
- Output Type: Transistor
- Package / Case: 4-SMD, Gull Wing
- Mounting Type: Surface Mount
- Current Transfer Ratio range: 100% to 200% @ 5mA
- Voltage - Output (Max): 80V
- Current - Output / Channel: 50mA
- Operating Temperature: -55°C ~ 110°C
Substitute parts are grouped into two categories:
Similar Manufacturer Parts (Toshiba TLP785 Series): Direct Toshiba alternatives with identical isolation voltage, channel count, output type, and package configuration. These parts maintain the same electrical performance envelope with variations in Current Transfer Ratio range and product status.
Parametric Equivalents (Everlight EL816 Series): Cross-manufacturer alternatives from Everlight Electronics that match all critical electrical and mechanical parameters. These components provide functional equivalence with different manufacturing origins and compliance certifications.
Parameter Comparison
| Parameter | TLP781(D4GRL-TP6,F | TLP785(D4GL-T6,F | TLP785(GRL-TP6,F | EL816(S)(X)(TD) | EL816(S)(X)(TD)-V | EL816(S)(X)(TU) | EL816(S)(X)(TU)-V | EL816(S1)(X)(TD) | EL816(S1)(X)(TD)-V | EL816(S1)(X)(TU) | EL816(S1)(X)(TU)-V |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Toshiba | Toshiba | Toshiba | Everlight | Everlight | Everlight | Everlight | Everlight | Everlight | Everlight | Everlight |
| Number of Channels | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Voltage - Isolation | 5000Vrms | 5000Vrms | 5000Vrms | 5000Vrms | 5000Vrms | 5000Vrms | 5000Vrms | 5000Vrms | 5000Vrms | 5000Vrms | 5000Vrms |
| Current Transfer Ratio (Min) | 100% @ 5mA | 50% @ 5mA | 100% @ 5mA | 100% @ 5mA | 100% @ 5mA | 100% @ 5mA | 100% @ 5mA | 100% @ 5mA | 100% @ 5mA | 100% @ 5mA | 100% @ 5mA |
| Current Transfer Ratio (Max) | 200% @ 5mA | 600% @ 5mA | 200% @ 5mA | 200% @ 5mA | 200% @ 5mA | 200% @ 5mA | 200% @ 5mA | 200% @ 5mA | 200% @ 5mA | 200% @ 5mA | 200% @ 5mA |
| Output Type | Transistor | Transistor | Transistor | Transistor | Transistor | Transistor | Transistor | Transistor | Transistor | Transistor | Transistor |
| Voltage - Output (Max) | 80V | 80V | 80V | 80V | 80V | 80V | 80V | 80V | 80V | 80V | 80V |
| Current - Output / Channel | 50mA | 50mA | 50mA | 50mA | 50mA | 50mA | 50mA | 50mA | 50mA | 50mA | 50mA |
| Voltage - Forward (Vf) (Typ) | 1.15V | 1.15V | 1.15V | 1.2V | 1.2V | 1.2V | 1.2V | 1.2V | 1.2V | 1.2V | 1.2V |
| Current - DC Forward (If) (Max) | 60mA | 60mA | 60mA | 60mA | 60mA | 60mA | 60mA | 60mA | 60mA | 60mA | 60mA |
| Vce Saturation (Max) | 400mV | 400mV | 400mV | 200mV | 200mV | 200mV | 200mV | 200mV | 200mV | 200mV | 200mV |
| Operating Temperature | -55°C ~ 110°C | -55°C ~ 110°C | -55°C ~ 110°C | -55°C ~ 110°C | -55°C ~ 110°C | -55°C ~ 110°C | -55°C ~ 110°C | -55°C ~ 110°C | -55°C ~ 110°C | -55°C ~ 110°C | -55°C ~ 110°C |
| Package / Case | 4-SMD, Gull Wing | 4-SMD, Gull Wing | 4-SMD, Gull Wing | 4-SMD, Gull Wing | 4-SMD, Gull Wing | 4-SMD, Gull Wing | 4-SMD, Gull Wing | 4-SMD, Gull Wing | 4-SMD, Gull Wing | 4-SMD, Gull Wing | 4-SMD, Gull Wing |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active |
| RoHS Status | Not specified | RoHS Compliant | Not specified | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | Not Applicable | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
Toshiba TLP785 Series (Active Status):
TLP785(D4GL-T6,F provides the closest manufacturer continuity as a Toshiba product with active production status and RoHS compliance. This variant accommodates a broader Current Transfer Ratio range (50% to 600% @ 5mA) compared to the original TLP781, offering greater design flexibility. Tape & Reel packaging availability supports high-volume procurement requirements.
TLP785(GRL-TP6,F maintains identical Current Transfer Ratio specifications (100% to 200% @ 5mA) to the original part with active product status. This variant is recommended for designs requiring strict parameter matching with the obsolete TLP781(D4GRL-TP6,F.
Everlight EL816 Series (Active Status, ROHS3 Compliant):
The EL816 family provides cross-manufacturer parametric equivalence with all variants maintaining active production status and ROHS3 compliance certification. All EL816 variants deliver superior Vce Saturation performance (200mV maximum) compared to the TLP781 specification (400mV maximum), resulting in lower output voltage drop and reduced power dissipation in switching applications.
EL816(S)(X)(TD), EL816(S)(X)(TD)-V, EL816(S)(X)(TU), and EL816(S)(X)(TU)-V variants are functionally equivalent with identical electrical parameters. Selection between these variants depends on specific packaging and lead configuration requirements within the EL816 product line.
EL816(S1)(X)(TD), EL816(S1)(X)(TD)-V, EL816(S1)(X)(TU), and EL816(S1)(X)(TU)-V variants provide identical electrical performance to the standard EL816(S) variants with alternative internal configurations designated by the S1 suffix.
Frequently Asked Questions (FAQ)
Q: Can TLP785(D4GL-T6,F be used as a direct replacement for TLP781(D4GRL-TP6,F?
A: TLP785(D4GL-T6,F meets all critical electrical and mechanical parameters required for substitution. The broader Current Transfer Ratio range (50% to 600% @ 5mA) encompasses the original specification (100% to 200% @ 5mA). Active product status and RoHS compliance provide procurement and regulatory advantages. Tape & Reel packaging differs from the original specification but maintains identical electrical performance.
Q: What is the primary difference between Toshiba TLP785 and Everlight EL816 optoisolators?
A: Both product families maintain identical isolation voltage (5000Vrms), channel count (1), output type (transistor), package configuration (4-SMD, Gull Wing), and operating temperature range (-55°C ~ 110°C). The EL816 series delivers superior Vce Saturation performance (200mV maximum versus 400mV maximum), resulting in lower output voltage drop. Manufacturer origin and compliance certifications differ, with EL816 variants offering ROHS3 compliance across all variants.
Q: Are all EL816 variants electrically interchangeable?
A: All EL816 variants specified (with S or S1 designations and TD or TU suffixes) maintain identical electrical parameters including Current Transfer Ratio (100% to 200% @ 5mA), output voltage rating (80V maximum), output current (50mA per channel), and operating temperature range (-55°C ~ 110°C). Variant designations reflect internal configuration and packaging options rather than electrical performance differences.
Q: What packaging considerations apply when substituting the TLP781(D4GRL-TP6,F?
A: All substitute parts maintain 4-SMD surface mount package with gull wing lead configuration, ensuring PCB footprint compatibility. TLP785(D4GL-T6,F is supplied in Tape & Reel packaging for high-volume applications, while TLP785(GRL-TP6,F and all EL816 variants do not specify packaging format in the provided data. Verify packaging availability with component suppliers for specific procurement requirements.
Q: Does substitution require design re-qualification?
A: Substitution within the specified parameter envelope does not introduce electrical performance changes affecting circuit operation. The lower Vce Saturation of EL816 variants (200mV versus 400mV) represents an improvement in switching efficiency. Compliance certifications (RoHS status) should be verified against design requirements. Component-level electrical testing is not required when parameters remain within specified ranges.
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