Request Quote
(Ships tomorrow)
TLP781F(D4BL-TP7,F Equivalent & Substitute Parts
Part Overview
The TLP781F(D4BL-TP7,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. The part is currently listed as obsolete, making identification of equivalent and substitute components essential for ongoing design support and production continuity.
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 |
| Mounting Type | Surface Mount |
| Package / Case | 4-SMD, Gull Wing |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitute parts for the TLP781F(D4BL-TP7,F are identified based on strict electrical and mechanical parameter matching. The critical parameters determining substitution eligibility are:
- Single channel configuration
- 5000Vrms isolation voltage
- Transistor output topology
- Current transfer ratio range: 200% to 600% @ 5mA
- Maximum output voltage: 80V
- Maximum output current: 50mA
- DC input type
- Operating temperature range: -55°C ~ 110°C
Two substitute parts meet these criteria with variations in mounting technology and product status.
Parameter Comparison
| Parameter | TLP781F(D4BL-TP7,F (Main) | TLP785F(D4BLT7,F (Direct Substitute) | TLP785F(BL-TP7,F (Parametric Equivalent) |
|---|---|---|---|
| Manufacturer | Toshiba | Toshiba | Toshiba |
| Number of Channels | 1 | 1 | 1 |
| Voltage - Isolation | 5000Vrms | 5000Vrms | 5000Vrms |
| Current Transfer Ratio (Min) | 200% @ 5mA | 200% @ 5mA | 200% @ 5mA |
| Current Transfer Ratio (Max) | 600% @ 5mA | 600% @ 5mA | 600% @ 5mA |
| Turn On / Turn Off Time (Typ) | 3µs, 3µs | 3µs, 3µs | 3µs, 3µs |
| Rise / Fall Time (Typ) | 2µs, 3µs | 2µs, 3µs | 2µs, 3µs |
| Output Type | Transistor | Transistor | Transistor |
| Voltage - Output (Max) | 80V | 80V | 80V |
| Current - Output / Channel | 50mA | 50mA | 50mA |
| Voltage - Forward (Vf) (Typ) | 1.15V | 1.15V | 1.15V |
| Current - DC Forward (If) (Max) | 60mA | 60mA | 60mA |
| Vce Saturation (Max) | 400mV | 400mV | 400mV |
| Operating Temperature | -55°C ~ 110°C | -55°C ~ 110°C | -55°C ~ 110°C |
| Mounting Type | Surface Mount | Through Hole | Surface Mount |
| Package / Case | 4-SMD, Gull Wing | 4-DIP (0.400", 10.16mm) | 4-SMD, Gull Wing |
| Product Status | Obsolete | Active | Active |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
TLP785F(BL-TP7,F is the primary substitute for the obsolete TLP781F(D4BL-TP7,F. This part maintains identical electrical specifications and surface mount packaging, requiring no PCB redesign. The part is currently in active production status, ensuring long-term availability and supply chain stability.
TLP785F(D4BLT7,F is an alternative substitute offering identical electrical performance but requires PCB layout modification due to through-hole 4-DIP packaging versus the original surface mount configuration. This option is suitable for applications where through-hole mounting is preferred or where PCB redesign is feasible.
Both substitute parts carry EAR99 export classification and unlimited moisture sensitivity rating, matching the compliance profile of the original component.
Frequently Asked Questions (FAQ)
Q: Can TLP785F(BL-TP7,F directly replace TLP781F(D4BL-TP7,F without PCB modification?
A: Yes. Both parts use 4-SMD, Gull Wing surface mount packaging with identical pinout and electrical specifications. No PCB layout changes are required.
Q: What is the difference between TLP785F(D4BLT7,F and TLP785F(BL-TP7,F?
A: The primary difference is packaging. TLP785F(D4BLT7,F uses through-hole 4-DIP mounting, while TLP785F(BL-TP7,F uses surface mount 4-SMD packaging. All electrical parameters are identical.
Q: Are the substitute parts currently available?
A: Yes. TLP785F(BL-TP7,F has 1016 pieces in stock, and TLP785F(D4BLT7,F has 654 pieces in stock. Both are active products from Toshiba.
Q: Do the substitute parts meet the same isolation voltage specification?
A: Yes. All three parts provide 5000Vrms isolation voltage with identical current transfer ratio ranges and output specifications.
Q: What is the impact of the obsolete status of the original part?
A: The obsolete status of TLP781F(D4BL-TP7,F indicates discontinued production. Using an active substitute part ensures continued availability for future production runs and design iterations.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts