TLP781(D4-GRL-FD,F) Equivalent & Substitute Parts

Part Overview

The TLP781(D4-GRL-FD,F) is a single-channel optoisolator with transistor output manufactured by Toshiba Semiconductor and Storage. This component provides 5000Vrms isolation in a 4-DIP through-hole package and is classified as obsolete. Due to its obsolete status and limited inventory availability (942 pcs), identifying active equivalent and substitute parts is essential for ongoing design support and production continuity.

Substiute Parts

TLP781(D4-GRL-FD,F

Toshiba Semiconductor and StorageIn Stock: 1029TLP781(D4-GRL-FD,F Datasheet

Current PartRFQ

TLP785(D4-GRL,F

Toshiba Semiconductor and StorageIn Stock: 47257TLP785(D4-GRL,F Datasheet

SimilarRFQ

TLP785(GRL,F

Toshiba Semiconductor and StorageIn Stock: 1169TLP785(GRL,F Datasheet

Parametric EquivalentRFQ

EL816(X)

Everlight Electronics Co LtdIn Stock: 5227EL816(X) Datasheet

Parametric EquivalentRFQ

EL816(X)-V

Everlight Electronics Co LtdIn Stock: 750EL816(X)-V Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TLP781(D4-GRL-FD,F) is determined by the following critical parameters:

• Isolation Voltage: 5000Vrms (mandatory match)
• Number of Channels: 1 (mandatory match)
• Output Type: Transistor (mandatory match)
• Package / Case: 4-DIP (0.300", 7.62mm) (mandatory match)
• Mounting Type: Through Hole (mandatory match)
• Input Type: DC (mandatory match)
• Voltage - Output (Max): 80V (mandatory match)
• Current - Output / Channel: 50mA (mandatory match)
• Operating Temperature Range: -55°C ~ 110°C (mandatory match)

All substitute parts listed below meet these mandatory electrical and mechanical parameters. Variations in Current Transfer Ratio (Max), Vce Saturation, and forward voltage characteristics remain within acceptable operational ranges for this component category.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: TLP785(GRL,F)

The TLP785(GRL,F) is the preferred substitute for the obsolete TLP781(D4-GRL-FD,F). Both are Toshiba products with identical electrical specifications and package configuration. The TLP785(GRL,F) is RoHS Compliant and carries an Active product status with 1099 pcs in inventory. This part maintains full parametric equivalence with the original component.

Secondary Recommendation: TLP785(D4-GRL,F)

The TLP785(D4-GRL,F) offers the highest inventory availability (47200 pcs) among all substitutes and maintains Active product status. The only parametric difference is a higher maximum Current Transfer Ratio (300% @ 5mA versus 200% @ 5mA), which does not affect circuit compatibility. This part is suitable for applications requiring extended supply chain security.

Alternative Recommendation: EL816(X) or EL816(X)-V

The Everlight EL816(X) and EL816(X)-V are parametric equivalents manufactured by an alternative supplier. Both are ROHS3 Compliant and Active. The EL816 series exhibits lower Vce Saturation (200mV maximum versus 400mV) and slightly slower rise time (4µs versus 2µs), which may be advantageous in specific circuit topologies. The EL816(X)-V variant provides additional design flexibility.

Frequently Asked Questions (FAQ)

Q: Can TLP785(D4-GRL,F) directly replace TLP781(D4-GRL-FD,F)?

A: Yes. Both parts share identical isolation voltage (5000Vrms), channel count (1), output type (transistor), package (4-DIP), and operating temperature range (-55°C ~ 110°C). The TLP785(D4-GRL,F) has a higher maximum Current Transfer Ratio (300% versus 200%), which is compatible with existing circuit designs.

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

A: Both parts are parametrically equivalent. The primary difference is packaging: TLP785(D4-GRL,F) is supplied in standard packaging, while TLP785(GRL,F) is supplied in Tube packaging. The TLP785(GRL,F) carries RoHS Compliant certification and Not Applicable MSL status.

Q: Are Everlight EL816(X) parts compatible with Toshiba TLP781?

A: Yes. The EL816(X) and EL816(X)-V meet all mandatory electrical and mechanical parameters. Both are 5000Vrms single-channel transistor output optoisolators in 4-DIP through-hole packages. The EL816 series exhibits lower Vce Saturation (200mV) compared to the TLP781 (400mV), which may improve switching performance in certain applications.

Q: Which substitute part has the best inventory availability?

A: The TLP785(D4-GRL,F) has the highest inventory level at 47200 pcs and Active product status, making it the optimal choice for production continuity and supply chain reliability.

Q: Are all substitute parts RoHS compliant?

A: The TLP785(GRL,F) is RoHS Compliant. The EL816(X) and EL816(X)-V are ROHS3 Compliant. The TLP785(D4-GRL,F) does not specify RoHS compliance in the provided data.

Q: Can I use EL816(X)-V instead of EL816(X)?

A: Yes. Both Everlight parts are parametrically identical and interchangeable. The selection between them depends on specific design requirements and supplier availability.