TLP127(TOKUD-TPL,F Equivalent & Substitute Parts

Part Overview

The TLP127(TOKUD-TPL,F is a photocoupler optoisolator manufactured by Toshiba Semiconductor and Storage, designed for DC input applications with Darlington output configuration. This component provides 2500Vrms isolation voltage in a 6-MFSOP surface mount package with 4 leads. The product is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

TLP127(TOKUD-TPL,F

Toshiba Semiconductor and StorageIn Stock: 717TLP127(TOKUD-TPL,F Datasheet

Current PartRFQ

TLP187(TPL,E

Toshiba Semiconductor and StorageIn Stock: 2269TLP187(TPL,E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLP127(TOKUD-TPL,F is determined by the following critical parameters that must remain compatible:

• Number of Channels: Must be 1 channel
• Output Type: Must be Darlington configuration
• Voltage - Output (Max): Must be 300V or greater
• Current - Output / Channel: Must be 150mA or greater
• Current Transfer Ratio (Min): Must be 1000% @ 1mA or higher
• Input Type: Must be DC
• Mounting Type: Must be Surface Mount
• Isolation Voltage: Must meet or exceed 2500Vrms

The TLP187(TPL,E qualifies as a functional substitute based on these parameters. While package geometry differs (6-SOP versus 6-MFSOP), both are surface mount configurations with compatible lead counts and electrical specifications that exceed or match the original part requirements.

Parameter Comparison

Engineering Selection Recommendations

The TLP187(TPL,E is a suitable substitute for the obsolete TLP127(TOKUD-TPL,F based on the following factors:

Electrical Compatibility: All critical electrical parameters match or exceed the original specification. The TLP187(TPL,E provides higher isolation voltage (3750Vrms versus 2500Vrms) and extended operating temperature range (-55°C to 110°C versus -55°C to 100°C), both of which represent improvements over the original design.

Product Status: The TLP187(TPL,E is classified as Active, ensuring ongoing availability and manufacturer support. The original TLP127(TOKUD-TPL,F is obsolete, making the substitute the appropriate choice for new designs and system replacements.

Compliance: The TLP187(TPL,E is RoHS3 Compliant and REACH Unaffected, meeting current regulatory requirements. Both parts carry EAR99 ECCN classification and identical HTSUS codes.

Package Consideration: While the package geometry differs (6-MFSOP versus 6-SOIC), both are standard surface mount configurations with 4 leads. PCB layout modifications may be required to accommodate the different package footprint.

Frequently Asked Questions (FAQ)

Q: Can the TLP187(TPL,E directly replace the TLP127(TOKUD-TPL,F without circuit modifications?

A: Electrical substitution is valid. However, the different package geometry (6-MFSOP versus 6-SOIC) requires PCB footprint changes. Pin functionality and electrical characteristics are compatible.

Q: What is the primary reason for substitution?

A: The TLP127(TOKUD-TPL,F is obsolete. The TLP187(TPL,E is an active product from the same manufacturer with equivalent or superior electrical specifications.

Q: Are there any performance differences between these parts?

A: The TLP187(TPL,E exceeds the original specification in isolation voltage (3750Vrms versus 2500Vrms) and operating temperature range. Forward voltage is slightly higher (1.25V versus 1.15V), which is within acceptable engineering tolerance for this component class.

Q: What certifications apply to the substitute part?

A: The TLP187(TPL,E is RoHS3 Compliant and REACH Unaffected. Both parts are classified as EAR99 for export control purposes.

Q: Is inventory availability a factor in this substitution?

A: Yes. The TLP187(TPL,E has 2250 units in stock as new original inventory, while the obsolete TLP127(TOKUD-TPL,F has limited remaining stock of 673 units.