TLP781F(D4-TP7,F) Equivalent & Substitute Parts

Part Overview

The TLP781F(D4-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 obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for new designs or production continuity.

Key Parameters

Parameter	Value
Manufacturer	Toshiba Semiconductor and Storage
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	5000Vrms
Output Type	Transistor
Current Transfer Ratio (Min)	50% @ 5mA
Current Transfer Ratio (Max)	600% @ 5mA
Voltage - Output (Max)	80V
Current - Output / Channel	50mA
Operating Temperature	-55°C ~ 110°C
Package / Case	4-SMD, Gull Wing
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitute parts for the TLP781F(D4-TP7,F) are classified based on strict electrical and mechanical parameter alignment:

Direct Manufacturer Equivalents (Toshiba TLP785 Series): Parts maintaining identical isolation voltage (5000Vrms), current transfer ratio range (50%-600% @ 5mA), output voltage (80V max), output current (50mA), operating temperature range (-55°C ~ 110°C), and 4-SMD gull wing package. These include TLP785F(D4-TP7,F), TLP785(D4-TP6,F), TLP785(D4GH-T6,F), TLP785(D4GL-T6,F), TLP785(TP6,F), and TLP785F(TP7,F).

Cross-Manufacturer Parametric Equivalents (Everlight EL816 Series): Parts from Everlight Electronics Co Ltd that match all critical electrical parameters: 5000Vrms isolation, 50%-600% current transfer ratio @ 5mA, 80V max output voltage, 50mA output current, -55°C ~ 110°C operating temperature, and 4-SMD gull wing package. These include EL816(S)(TD), EL816(S)(TD)-V, EL816(S)(TU)-V, and EL816(S1)(TD).

Key Parameters Determining Substitution:

Isolation voltage: 5000Vrms (mandatory)
Current transfer ratio: 50%-600% @ 5mA (mandatory)
Output type: Transistor (mandatory)
Maximum output voltage: 80V (mandatory)
Maximum output current: 50mA per channel (mandatory)
Operating temperature range: -55°C ~ 110°C (mandatory)
Package: 4-SMD, Gull Wing (mandatory)
Input type: DC (mandatory)

Parameter Comparison

Part Number	Manufacturer	Product Status	Isolation Voltage	CTR Min @ 5mA	CTR Max @ 5mA	Vce Sat (Max)	Vf (Typ)	If (Max)	Output Voltage (Max)	Output Current	Temp Range	Package	RoHS Status
TLP781F(D4-TP7,F)	Toshiba	Obsolete	5000Vrms	50%	600%	400mV	1.15V	60mA	80V	50mA	-55°C ~ 110°C	4-SMD, Gull Wing	Not Specified
TLP785F(D4-TP7,F)	Toshiba	Active	5000Vrms	50%	600%	400mV	1.15V	60mA	80V	50mA	-55°C ~ 110°C	4-SMD, Gull Wing	Not Specified
TLP785(D4-TP6,F)	Toshiba	Active	5000Vrms	50%	600%	400mV	1.15V	60mA	80V	50mA	-55°C ~ 110°C	4-SMD, Gull Wing	Not Specified
TLP785(D4GH-T6,F)	Toshiba	Active	5000Vrms	50%	600%	400mV	1.15V	60mA	80V	50mA	-55°C ~ 110°C	4-SMD, Gull Wing	RoHS Compliant
TLP785(D4GL-T6,F)	Toshiba	Active	5000Vrms	50%	600%	400mV	1.15V	60mA	80V	50mA	-55°C ~ 110°C	4-SMD, Gull Wing	RoHS Compliant
TLP785(TP6,F)	Toshiba	Active	5000Vrms	50%	600%	400mV	1.15V	60mA	80V	50mA	-55°C ~ 110°C	4-SMD, Gull Wing	RoHS Compliant
TLP785F(TP7,F)	Toshiba	Active	5000Vrms	50%	600%	400mV	1.15V	60mA	80V	50mA	-55°C ~ 110°C	4-SMD, Gull Wing	Not Specified
EL816(S)(TD)	Everlight	Active	5000Vrms	50%	600%	200mV	1.2V	60mA	80V	50mA	-55°C ~ 110°C	4-SMD, Gull Wing	RoHS3 Compliant
EL816(S)(TD)-V	Everlight	Active	5000Vrms	50%	600%	200mV	1.2V	60mA	80V	50mA	-55°C ~ 110°C	4-SMD, Gull Wing	RoHS3 Compliant
EL816(S)(TU)-V	Everlight	Active	5000Vrms	50%	600%	200mV	1.2V	60mA	80V	50mA	-55°C ~ 110°C	4-SMD, Gull Wing	RoHS3 Compliant
EL816(S1)(TD)	Everlight	Active	5000Vrms	50%	600%	200mV	1.2V	60mA	80V	50mA	-55°C ~ 110°C	4-SMD, Gull Wing	RoHS3 Compliant

Engineering Selection Recommendations

Toshiba TLP785 Series (Direct Manufacturer Continuity): The TLP785 variants represent the primary substitution path, offering identical electrical specifications and package configuration. All listed TLP785 variants are in active production status. TLP785(D4GH-T6,F) and TLP785(D4GL-T6,F) carry RoHS Compliant certification with tape & reel packaging, suitable for high-volume manufacturing environments. TLP785(TP6,F) provides the highest inventory availability (7400 units) with RoHS Compliant status. TLP785F(D4-TP7,F) and TLP785F(TP7,F) maintain direct part number alignment with the obsolete TLP781F(D4-TP7,F) and are actively produced.

Everlight EL816 Series (Cross-Manufacturer Alternative): The EL816 optoisolators from Everlight Electronics provide parametric equivalence with all critical electrical parameters matched. All EL816 variants carry RoHS3 Compliant certification. The EL816(S)(TD), EL816(S)(TD)-V, EL816(S)(TU)-V, and EL816(S1)(TD) variants feature lower Vce saturation (200mV versus 400mV), which may provide improved switching performance in specific applications. Selection between EL816 variants depends on packaging requirements and supply chain preferences.

Compliance Considerations: Designs requiring RoHS compliance should prioritize TLP785(D4GH-T6,F), TLP785(D4GL-T6,F), TLP785(TP6,F), or any EL816 variant, all of which carry explicit RoHS certification. The original TLP781F(D4-TP7,F) and certain TLP785 variants do not specify RoHS status.

Frequently Asked Questions (FAQ)

Q: Can TLP785 variants directly replace the obsolete TLP781F(D4-TP7,F)?

A: Yes. All TLP785 variants listed maintain identical isolation voltage (5000Vrms), current transfer ratio range (50%-600% @ 5mA), output voltage (80V max), output current (50mA), operating temperature range (-55°C ~ 110°C), and 4-SMD gull wing package configuration. Electrical performance and pinout compatibility are maintained across all TLP785 variants.

Q: What is the difference between TLP785(D4-TP6,F) and TLP785(TP6,F)?

A: Both parts maintain identical electrical specifications and package type (4-SMD, Gull Wing). The designation difference reflects internal packaging or tape configuration variants. Both are active production parts suitable for substitution.

Q: Are Everlight EL816 parts fully compatible with the TLP781F(D4-TP7,F)?

A: EL816 optoisolators match all mandatory electrical parameters: 5000Vrms isolation, 50%-600% current transfer ratio @ 5mA, 80V maximum output voltage, 50mA output current, -55°C ~ 110°C operating temperature, and 4-SMD gull wing package. The lower Vce saturation (200mV versus 400mV) represents an improvement in switching characteristics. Pinout and package compatibility are maintained.

Q: Which substitute part offers the best availability?

A: TLP785(TP6,F) provides the highest inventory level at 7400 units in stock, combined with active production status and RoHS Compliant certification.

Q: Do all substitute parts support tape & reel packaging?

A: TLP785(D4GH-T6,F), TLP785(D4GL-T6,F), and TLP785(TP6,F) are specified with tape & reel (TR) packaging. TLP785F(D4-TP7,F), TLP785(D4-TP6,F), and TLP785F(TP7,F) do not specify packaging format. All EL816 variants do not specify packaging format in the provided data. Confirm packaging requirements with the supplier for specific applications.

Q: What is the significance of the RoHS status difference?

A: RoHS Compliant and RoHS3 Compliant certifications indicate compliance with hazardous substance restrictions. Parts without specified RoHS status may not meet regulatory requirements for certain markets or applications. For new designs, prioritize parts with explicit RoHS certification.

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