TLP759(LF2,J,F) Equivalent & Substitute Parts

Part Overview

The TLP759(LF2,J,F) is an optoisolator transistor with base output manufactured by Toshiba Semiconductor and Storage. This component provides galvanic isolation with a 5000Vrms rating in a single-channel configuration using a through-hole 8-DIP package. The device is classified as obsolete, necessitating identification of active alternative components that maintain functional and electrical compatibility for new designs and production continuity.

Substiute Parts

TLP759(LF2,J,F)

Toshiba Semiconductor and StorageIn Stock: 985TLP759(LF2,J,F) Datasheet

Current PartRFQ

TLP2719(LF4,E

Toshiba Semiconductor and StorageIn Stock: 864TLP2719(LF4,E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLP759(LF2,J,F) is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Voltage isolation rating: 5000Vrms (mandatory match)
• Number of channels: 1 (mandatory match)
• Current transfer ratio minimum: 20% @ 16mA (mandatory match)
• Output type: Transistor with base (mandatory match)
• Maximum output voltage: 20V (mandatory match)
• Output current per channel: 8mA (mandatory match)
• Input type: DC (mandatory match)

Functional Compatibility: The TLP2719(LF4,E) maintains all critical electrical parameters required for direct functional substitution. Both devices operate within compatible forward voltage and current specifications, with identical isolation voltage ratings and output characteristics.

Package Consideration: The substitute part utilizes surface-mount technology (6-SOIC) rather than through-hole mounting (8-DIP). This represents a packaging transition that requires circuit board redesign and assembly process modification.

Parameter Comparison

Engineering Selection Recommendations

Electrical Compatibility: The TLP2719(LF4,E) provides complete electrical equivalence to the TLP759(LF2,J,F) across all specified parameters. Both components maintain 5000Vrms isolation voltage, identical current transfer ratios, and matching output characteristics. The substitute component is manufactured by the same supplier and carries identical export control and tariff classifications.

Product Status Advantage: The TLP2719(LF4,E) holds active product status, ensuring continued availability, manufacturing support, and compliance with current industry standards. The TLP759(LF2,J,F) is classified as obsolete, presenting supply chain risk and potential discontinuation of technical support.

Operating Temperature Consideration: The substitute component operates across -40°C to 100°C, compared to the original part's -55°C to 100°C range. Applications requiring operation below -40°C require evaluation against specific system requirements.

Packaging and Assembly Impact: Substitution requires transition from through-hole 8-DIP mounting to surface-mount 6-SOIC configuration. This necessitates printed circuit board redesign, assembly process modification, and potential equipment qualification changes. The physical footprint reduction from 0.300" to 0.295" width represents a minor dimensional change.

Moisture Sensitivity: The TLP2719(LF4,E) carries MSL Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can the TLP2719(LF4,E) directly replace the TLP759(LF2,J,F) without circuit modification?

A: Electrical substitution is direct. However, the packaging difference (surface-mount 6-SOIC versus through-hole 8-DIP) requires printed circuit board layout redesign and assembly process changes. Footprint conversion is necessary.

Q: What are the critical parameters that define substitution eligibility?

A: Substitution is determined by matching isolation voltage (5000Vrms), channel count (1), current transfer ratio minimum (20% @ 16mA), output type (transistor with base), maximum output voltage (20V), output current (8mA), and input type (DC). All these parameters are identical between the two components.

Q: Does the TLP2719(LF4,E) operate across the same temperature range?

A: The substitute operates from -40°C to 100°C, while the original operates from -55°C to 100°C. The substitute has a narrower lower temperature limit. Applications requiring operation below -40°C must evaluate this specification against system requirements.

Q: Are there compliance or export control differences?

A: Both components carry identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications. No compliance differences exist between the two parts.

Q: What is the significance of the current transfer ratio maximum specification on the substitute?

A: The TLP2719(LF4,E) specifies a maximum current transfer ratio of 55% @ 16mA, whereas the original part does not provide this specification. This additional specification provides design margin information but does not affect substitution eligibility, as the minimum requirement (20% @ 16mA) is met by both components.

Q: How does the forward voltage difference affect circuit design?

A: The substitute forward voltage is 1.6V typical compared to 1.65V for the original. This 0.05V difference is negligible for most circuit applications and falls within normal component tolerance ranges.

Q: What is the moisture sensitivity level of the substitute component?

A: The TLP2719(LF4,E) carries MSL Level 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling and storage practices apply without special moisture control requirements.