TLP785F(TP7,F) Equivalent & Substitute Parts

Part Overview

The TLP785F(TP7,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-SMD surface mount package. The part is currently in active production status with 828 units in stock.

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or specific packaging and compliance requirements while maintaining functional compatibility within the defined electrical and mechanical parameters.

Key Parameters

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

Substitute Part Grouping Explanation

Substitute parts for the TLP785F(TP7,F) are classified based on strict equivalence of the following critical parameters:

Voltage - Isolation: 5000Vrms (mandatory)
Number of Channels: 1 (mandatory)
Current Transfer Ratio range: 50% to 600% @ 5mA (mandatory)
Output Type: Transistor (mandatory)
Voltage - Output (Max): 80V (mandatory)
Current - Output / Channel: 50mA (mandatory)
Operating Temperature Range: -55°C ~ 110°C (mandatory)
Mounting Type: Surface Mount (mandatory)
Package / Case: 4-SMD, Gull Wing (mandatory)

All identified substitutes meet these electrical and mechanical criteria. Variations in packaging designation (Tape & Reel vs. standard packaging), RoHS compliance status, and minor timing specifications do not affect functional interchangeability within the defined parameter set.

Parameter Comparison

Parameter	TLP785F(TP7,F)	TLP785(D4GH-T6,F)	TLP785(D4GL-T6,F)	TLP785(TP6,F)	EL8171S1(TU)-G	VOL617AT
Manufacturer	Toshiba	Toshiba	Toshiba	Toshiba	Everlight Electronics	Vishay
Voltage - Isolation	5000Vrms	5000Vrms	5000Vrms	5000Vrms	5000Vrms	5000Vrms
Number of Channels	1	1	1	1	1	1
Current Transfer Ratio (Min)	50% @ 5mA	50% @ 5mA	50% @ 5mA	50% @ 5mA	50% @ 5mA	50% @ 5mA
Current Transfer Ratio (Max)	600% @ 5mA	600% @ 5mA	600% @ 5mA	600% @ 5mA	600% @ 5mA	600% @ 5mA
Output Type	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor
Voltage - Output (Max)	80V	80V	80V	80V	80V	80V
Current - Output / Channel	50mA	50mA	50mA	50mA	50mA	50mA
Operating Temperature Range	-55°C ~ 110°C	-55°C ~ 110°C	-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	Surface Mount	Surface Mount
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
Voltage - Forward (Vf) (Typ)	1.15V	1.15V	1.15V	1.15V	1.2V	1.16V
Current - DC Forward (If) (Max)	60mA	60mA	60mA	60mA	60mA	60mA
Vce Saturation (Max)	400mV	400mV	400mV	400mV	200mV	400mV
Product Status	Active	Active	Active	Active	Active	Active
Inventory (Pcs)	828	5006	4710	7400	5099	28700

Engineering Selection Recommendations

All identified substitute parts maintain active product status and meet the mandatory electrical and mechanical parameters for direct functional replacement of the TLP785F(TP7,F).

Toshiba variants TLP785(D4GH-T6,F), TLP785(D4GL-T6,F), and TLP785(TP6,F) provide identical electrical specifications with RoHS compliance certification where applicable. These parts are available in higher inventory quantities, ranging from 4710 to 7400 units.

The Everlight Electronics EL8171S1(TU)-G offers ROHS3 compliance and REACH unaffected status. This part exhibits a lower Vce saturation maximum of 200mV compared to the 400mV specification of the primary part, representing improved switching characteristics within the defined parameter envelope.

The Vishay VOL617AT provides the highest inventory availability at 28,700 units. This part maintains all critical electrical parameters and operates within the specified temperature range. The package designation differs as 4-SOP rather than 4-SMD, though both represent surface mount gull wing configurations with equivalent pin compatibility.

Frequently Asked Questions (FAQ)

Q: Can TLP785(D4GH-T6,F), TLP785(D4GL-T6,F), and TLP785(TP6,F) be used interchangeably with TLP785F(TP7,F)?

A: Yes. These Toshiba variants meet all mandatory electrical and mechanical parameters including 5000Vrms isolation, 1-channel configuration, 50-600% current transfer ratio, 80V maximum output voltage, 50mA output current, and -55°C to 110°C operating range. Packaging differences (Tape & Reel designation) do not affect functional compatibility.

Q: What is the difference between the EL8171S1(TU)-G and the TLP785F(TP7,F)?

A: The EL8171S1(TU)-G is manufactured by Everlight Electronics and meets all critical electrical specifications. The primary difference is a lower Vce saturation maximum of 200mV versus 400mV in the TLP785F(TP7,F), indicating superior switching performance. Both parts are rated for 5000Vrms isolation and identical output current and voltage specifications.

Q: Is the VOL617AT package compatible with TLP785F(TP7,F) PCB layouts?

A: The VOL617AT uses a 4-SOP package designation versus the 4-SMD, Gull Wing specification of the TLP785F(TP7,F). Both are surface mount configurations with equivalent pin arrangements. PCB layout compatibility depends on specific footprint design; verification of pin spacing and orientation is required.

Q: Are all substitute parts RoHS compliant?

A: RoHS compliance status varies. TLP785(D4GH-T6,F), TLP785(D4GL-T6,F), and TLP785(TP6,F) are RoHS compliant. EL8171S1(TU)-G is ROHS3 compliant. The primary part TLP785F(TP7,F) does not specify RoHS status in the provided data. VOL617AT does not specify RoHS status in the provided data.

Q: Which substitute part has the highest inventory availability?

A: The VOL617AT manufactured by Vishay has the highest inventory at 28,700 units in stock, compared to 828 units for the primary TLP785F(TP7,F) part.

Q: Can I use these parts in applications requiring REACH compliance?

A: The EL8171S1(TU)-G is explicitly marked as REACH unaffected. REACH status for other substitute parts is not specified in the provided data.

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