TLP781(D4-YH-TP6,F Equivalent & Substitute Parts

Part Overview

The TLP781(D4-YH-TP6,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 surface mount configurations. The main part is currently classified as obsolete, making identification of active equivalent alternatives essential for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer	Toshiba Semiconductor and Storage
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	5000Vrms
Current Transfer Ratio (Min)	75% @ 5mA
Current Transfer Ratio (Max)	150% @ 5mA
Turn On / Turn Off Time (Typ)	3µs, 3µs
Rise / Fall Time (Typ)	2µs, 3µs
Input Type	DC
Output Type	Transistor
Voltage - Output (Max)	80V
Current - Output / Channel	50mA
Voltage - Forward (Vf) (Typ)	1.15V
Current - DC Forward (If) (Max)	60mA
Vce Saturation (Max)	400mV
Operating Temperature	-55°C ~ 110°C
Mounting Type	Surface Mount
Package / Case	4-SMD, Gull Wing
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the TLP781(D4-YH-TP6,F is determined by strict equivalence across the following critical parameters:

Single-channel configuration with transistor output topology
5000Vrms isolation voltage rating
Current transfer ratio range of 75% to 150% @ 5mA
Switching characteristics: 3µs turn-on/turn-off time and 2µs/3µs rise/fall time
Maximum output voltage of 80V and output current of 50mA per channel
DC input type with forward voltage of 1.15V typical and maximum forward current of 60mA
Vce saturation maximum of 400mV
Operating temperature range of -55°C to 110°C
Surface mount package in 4-SMD, Gull Wing configuration

All substitute parts listed maintain these electrical and mechanical specifications without deviation.

Parameter Comparison

Parameter	TLP781(D4-YH-TP6,F	TLP785(D4YH-T6,F	TLP785(YH-TP6,F	TLP785F(YH-TP7,F
Product Status	Obsolete	Active	Active	Active
Number of Channels	1	1	1	1
Voltage - Isolation	5000Vrms	5000Vrms	5000Vrms	5000Vrms
Current Transfer Ratio (Min)	75% @ 5mA	75% @ 5mA	75% @ 5mA	75% @ 5mA
Current Transfer Ratio (Max)	150% @ 5mA	150% @ 5mA	150% @ 5mA	150% @ 5mA
Turn On / Turn Off Time (Typ)	3µs, 3µs	3µs, 3µs	3µs, 3µs	3µs, 3µs
Rise / Fall Time (Typ)	2µs, 3µs	2µs, 3µs	2µs, 3µs	2µs, 3µs
Input Type	DC	DC	DC	DC
Output Type	Transistor	Transistor	Transistor	Transistor
Voltage - Output (Max)	80V	80V	80V	80V
Current - Output / Channel	50mA	50mA	50mA	50mA
Voltage - Forward (Vf) (Typ)	1.15V	1.15V	1.15V	1.15V
Current - DC Forward (If) (Max)	60mA	60mA	60mA	60mA
Vce Saturation (Max)	400mV	400mV	400mV	400mV
Operating Temperature	-55°C ~ 110°C	-55°C ~ 110°C	-55°C ~ 110°C	-55°C ~ 110°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing

Engineering Selection Recommendations

The TLP781(D4-YH-TP6,F is obsolete and should be replaced with one of the three active TLP785 variants. All three substitute parts—TLP785(D4YH-T6,F, TLP785(YH-TP6,F, and TLP785F(YH-TP7,F—maintain identical electrical specifications and package configuration.

TLP785(D4YH-T6,F is supplied in Tape & Reel packaging and carries RoHS Compliant certification. This variant is suitable for high-volume production environments requiring automated assembly and regulatory compliance documentation.

TLP785(YH-TP6,F maintains MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental classification. This variant provides the highest inventory availability at 16,639 pieces.

TLP785F(YH-TP7,F also maintains MSL 1 (Unlimited) classification and is available with 803 pieces in stock. This variant is suitable for applications where the specific package variant designation is required.

All three substitutes are manufactured by Toshiba Semiconductor and Storage and carry ECCN EAR99 and HTSUS 8541.49.8000 classifications identical to the original part.

Frequently Asked Questions (FAQ)

Q: Can TLP785 variants directly replace the obsolete TLP781(D4-YH-TP6,F?

A: Yes. All three TLP785 variants maintain identical electrical specifications across isolation voltage, current transfer ratio, switching characteristics, output voltage and current ratings, and operating temperature range. The 4-SMD Gull Wing package configuration is identical, enabling direct substitution without circuit redesign.

Q: What is the difference between the three TLP785 substitute options?

A: The three variants differ in packaging format and compliance certifications. TLP785(D4YH-T6,F is supplied in Tape & Reel format with RoHS Compliant status. TLP785(YH-TP6,F and TLP785F(YH-TP7,F are supplied in standard packaging with MSL 1 (Unlimited) moisture sensitivity rating. All maintain identical electrical performance.

Q: Which TLP785 variant should be selected for new designs?

A: Selection depends on procurement and manufacturing requirements. For high-volume automated assembly, TLP785(D4YH-T6,F with Tape & Reel packaging is appropriate. For applications requiring MSL 1 classification, either TLP785(YH-TP6,F or TLP785F(YH-TP7,F is suitable. Inventory availability should be considered: TLP785(YH-TP6,F has the highest stock level at 16,639 pieces.

Q: Are there any compliance or certification differences between the substitutes?

A: TLP785(D4YH-T6,F carries RoHS Compliant certification. TLP785(YH-TP6,F and TLP785F(YH-TP7,F do not list RoHS status but maintain MSL 1 (Unlimited) classification. All three carry identical ECCN EAR99 and HTSUS 8541.49.8000 classifications.

Q: Is the 4-SMD Gull Wing package identical across all variants?

A: Yes. All four parts—the original TLP781(D4-YH-TP6,F and all three TLP785 substitutes—use the same 4-SMD Gull Wing surface mount package configuration. No PCB layout modifications are required for substitution.

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