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TLP785(BL-LF6,F) Equivalent & Substitute Parts
Part Overview
The TLP785(BL-LF6,F) is an optoisolator with transistor output manufactured by Toshiba Semiconductor and Storage. This component provides galvanic isolation up to 5000Vrms with a single channel configuration in a 4-DIP package. The part is currently in active production status with 817 pieces available in new original inventory. Alternative equivalent parts may be required due to packaging variations, regional availability, or specific procurement requirements while maintaining identical electrical and mechanical performance.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Toshiba Semiconductor and Storage |
| Category | Optoisolators |
| Number of Channels | 1 |
| Voltage - Isolation | 5000Vrms |
| Current Transfer Ratio (Min) | 200% @ 5mA |
| Current Transfer Ratio (Max) | 600% @ 5mA |
| Output Type | Transistor |
| Voltage - Output (Max) | 80V |
| Current - Output / Channel | 50mA |
| Operating Temperature | -55°C ~ 110°C |
| Package / Case | 4-DIP (0.300", 7.62mm) |
| Mounting Type | Through Hole |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitution of the TLP785(BL-LF6,F) is based on strict equivalence of the following critical parameters:
- Isolation voltage: 5000Vrms
- Number of channels: 1
- Output type: Transistor
- Current transfer ratio range: 200% to 600% @ 5mA
- Maximum output voltage: 80V
- Maximum output current per channel: 50mA
- Package type: 4-DIP (0.300", 7.62mm)
- Mounting type: Through Hole
- Operating temperature range: -55°C ~ 110°C
The TLP785(BL,F) variant meets all these criteria and qualifies as a parametric equivalent. The primary difference is packaging format (Tube versus the original specification), which does not affect electrical or mechanical compatibility in the 4-DIP form factor.
Parameter Comparison
| Parameter | TLP785(BL-LF6,F) | TLP785(BL,F) |
|---|---|---|
| Manufacturer | Toshiba Semiconductor and Storage | Toshiba Semiconductor and Storage |
| Number of Channels | 1 | 1 |
| Voltage - Isolation | 5000Vrms | 5000Vrms |
| Current Transfer Ratio (Min) | 200% @ 5mA | 200% @ 5mA |
| Current Transfer Ratio (Max) | 600% @ 5mA | 600% @ 5mA |
| Turn On / Turn Off Time (Typ) | 3µs, 3µs | 3µs, 3µs |
| Rise / Fall Time (Typ) | 2µs, 3µs | 2µs, 3µs |
| Input Type | DC | DC |
| Output Type | Transistor | Transistor |
| Voltage - Output (Max) | 80V | 80V |
| Current - Output / Channel | 50mA | 50mA |
| Voltage - Forward (Vf) (Typ) | 1.15V | 1.15V |
| Current - DC Forward (If) (Max) | 60 mA | 60 mA |
| Vce Saturation (Max) | 400mV | 400mV |
| Operating Temperature | -55°C ~ 110°C | -55°C ~ 110°C |
| Package / Case | 4-DIP (0.300", 7.62mm) | 4-DIP (0.300", 7.62mm) |
| Mounting Type | Through Hole | Through Hole |
| Product Status | Active | Active |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| ECCN | EAR99 | EAR99 |
| HTSUS | 8541.49.8000 | 8541.49.8000 |
Engineering Selection Recommendations
Both the TLP785(BL-LF6,F) and TLP785(BL,F) are active production parts from Toshiba Semiconductor and Storage with identical electrical specifications and mechanical compatibility. Selection between these variants should be based on:
- Packaging format availability: TLP785(BL-LF6,F) is supplied in standard packaging, while TLP785(BL,F) is supplied in Tube format
- Inventory requirements: TLP785(BL,F) has higher inventory availability (5999 pieces versus 817 pieces)
- Compliance status: TLP785(BL,F) carries explicit RoHS Compliant certification
- Moisture sensitivity: Both parts have MSL rating of 1 (Unlimited), indicating no moisture sensitivity constraints
Both parts carry identical export control classifications (ECCN: EAR99) and tariff codes (HTSUS: 8541.49.8000).
Frequently Asked Questions (FAQ)
Q: Can TLP785(BL,F) be used as a direct replacement for TLP785(BL-LF6,F)?
A: Yes. Both parts are parametric equivalents with identical electrical characteristics, isolation voltage, output specifications, and 4-DIP through-hole package dimensions. The only difference is the packaging format (Tube versus standard packaging).
Q: What are the critical parameters that define substitution eligibility for this optoisolator?
A: Substitution eligibility is determined by: isolation voltage (5000Vrms), number of channels (1), output type (Transistor), current transfer ratio range (200-600% @ 5mA), maximum output voltage (80V), maximum output current (50mA), package type (4-DIP), and operating temperature range (-55°C ~ 110°C).
Q: Are there any compliance differences between the two parts?
A: TLP785(BL,F) explicitly lists RoHS Compliant status. Both parts share identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications and MSL rating of 1 (Unlimited).
Q: Does the packaging format affect circuit board compatibility?
A: No. Both parts use the same 4-DIP (0.300", 7.62mm) package with through-hole mounting. Packaging format refers only to how units are supplied (Tube versus standard), not the component form factor.
Q: What is the current transfer ratio specification and why is it important?
A: The current transfer ratio ranges from 200% to 600% at 5mA input current. This parameter defines the relationship between input LED current and output transistor current, ensuring consistent signal isolation performance across the specified range.
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