TLP781F(D4FUNBLL,F Optoisolator Transistor Output Equivalent & Substitute Parts

Part Overview

The TLP781F(D4FUNBLL,F is a photocoupler optoisolator with transistor output manufactured by Toshiba Semiconductor and Storage. This component provides 5000Vrms isolation in a 4-DIP package and is classified as obsolete. Due to its obsolete status, equivalent substitute parts from active product lines are necessary for new designs and ongoing production requirements. The substitute parts listed maintain identical or superior electrical and mechanical specifications while offering active product availability.

Substiute Parts

TLP781F(D4FUNBLL,F

Toshiba Semiconductor and StorageIn Stock: 916TLP781F(D4FUNBLL,F Datasheet

Current PartRFQ

TLP785F(D4-BLL,F

Toshiba Semiconductor and StorageIn Stock: 1055TLP785F(D4-BLL,F Datasheet

SimilarRFQ

TLP785F(BL-LF7,F

Toshiba Semiconductor and StorageIn Stock: 763TLP785F(BL-LF7,F Datasheet

Parametric EquivalentRFQ

TLP785F(BLL,F

Toshiba Semiconductor and StorageIn Stock: 944TLP785F(BLL,F Datasheet

Parametric EquivalentRFQ

TLP785F(BLL-F7,F

Toshiba Semiconductor and StorageIn Stock: 956TLP785F(BLL-F7,F Datasheet

Parametric EquivalentRFQ

EL816(M)(C)

Everlight Electronics Co LtdIn Stock: 1016EL816(M)(C) Datasheet

Parametric EquivalentRFQ

EL816(M)(C)-V

Everlight Electronics Co LtdIn Stock: 1214EL816(M)(C)-V Datasheet

Parametric EquivalentRFQ

EL817(M)(C)-G

Everlight Electronics Co LtdIn Stock: 959EL817(M)(C)-G Datasheet

Parametric EquivalentRFQ

EL817(M)(C)-VG

Everlight Electronics Co LtdIn Stock: 845EL817(M)(C)-VG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TLP781F(D4FUNBLL,F are classified based on strict parametric equivalence. The critical parameters determining substitutability are:

• Voltage - Isolation: 5000Vrms (mandatory match)
• Number of Channels: 1 (mandatory match)
• Output Type: Transistor (mandatory match)
• Package / Case: 4-DIP (0.400", 10.16mm) (mandatory match)
• Current Transfer Ratio: 200% - 400% @ 5mA (mandatory match)
• Voltage - Output (Max): 80V (mandatory match)
• Current - Output / Channel: 50mA (mandatory match)
• Operating Temperature: -55°C ~ 110°C (mandatory match)

All substitute parts listed maintain these critical parameters. Toshiba TLP785F variants are direct parametric equivalents with active product status. Everlight EL816 and EL817 series parts are parametric equivalents from an alternative manufacturer, also with active product status and RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using the obsolete TLP781F(D4FUNBLL,F, the Toshiba TLP785F series represents the primary substitution path. All TLP785F variants (D4-BLL, BL-LF7, BLL, BLL-F7) maintain identical electrical specifications and are in active production status. These parts are direct replacements with no design modifications required.

The Everlight EL816 and EL817 series provide alternative substitutes with active product status and RoHS3 compliance certification. These parts meet all parametric requirements with the exception of Vce Saturation, which is superior (200mV versus 400mV). The EL816(M)(C)-V and EL817(M)(C)-VG variants offer the highest inventory availability among Everlight options.

Selection between Toshiba and Everlight alternatives should be based on supply chain requirements, qualification status, and existing vendor relationships. All listed substitutes are electrically and mechanically compatible with the original part.

Frequently Asked Questions (FAQ)

Q: Can TLP785F variants be used as direct replacements for TLP781F(D4FUNBLL,F?

A: Yes. All TLP785F variants listed maintain identical isolation voltage (5000Vrms), current transfer ratio (200%-400% @ 5mA), output specifications (80V max, 50mA), and 4-DIP package configuration. The primary difference is product status: TLP785F is active while TLP781F is obsolete.

Q: What is the difference between Toshiba TLP785F and Everlight EL816/EL817 substitutes?

A: Both manufacturers' parts meet the critical parametric requirements. Everlight parts feature superior Vce Saturation (200mV versus 400mV), indicating lower saturation voltage. Everlight parts carry RoHS3 compliance certification. Toshiba TLP785F variants are from the same manufacturer as the original part.

Q: Are there differences between TLP785F package variants (D4-BLL, BL-LF7, BLL, BLL-F7)?

A: All variants use the same 4-DIP (0.400", 10.16mm) package and maintain identical electrical specifications. Designations reflect internal lead frame and manufacturing process variations. All are mechanically and electrically interchangeable.

Q: What is the significance of Vce Saturation differences between Toshiba and Everlight parts?

A: Vce Saturation (Toshiba: 400mV, Everlight: 200mV) represents the collector-emitter saturation voltage. Lower saturation voltage in Everlight parts indicates reduced power dissipation in the output transistor, which is a performance advantage. Both values are within acceptable operating ranges for standard applications.

Q: Can I mix Toshiba and Everlight parts in the same circuit board?

A: Yes, provided the circuit design does not depend on specific manufacturer characteristics. All listed parts maintain identical isolation voltage, current transfer ratio, output voltage, and current specifications. Differences in rise/fall time and Vce Saturation are minor and typically do not affect circuit functionality in standard isolation applications.

Q: What inventory considerations apply to these substitutes?

A: Toshiba TLP785F(D4-BLL,F offers the highest inventory (1022 Pcs), followed by TLP785F(BLL-F7,F (919 Pcs). Everlight EL816(M)(C)-V provides the highest Everlight availability (1135 Pcs). All listed parts are in active production with new original stock available.