TLP127(HIT-TPL,F) Equivalent & Substitute Parts

Part Overview

The TLP127(HIT-TPL,F) is a photocoupler optoisolator with Darlington output manufactured by Toshiba Semiconductor and Storage. This component provides galvanic isolation up to 2500Vrms with a single channel configuration in a 6-MFSOP surface mount package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations where this isolation topology is required.

Substiute Parts

TLP127(HIT-TPL,F)

Toshiba Semiconductor and StorageIn Stock: 1146TLP127(HIT-TPL,F) Datasheet

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TLP187(TPL,E

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

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLP127(HIT-TPL,F) is determined by the following critical parameters:

• Single Channel Configuration: Both main and substitute parts must provide exactly one isolated channel
• Darlington Output Stage: Output topology must remain Darlington type for circuit compatibility
• Isolation Voltage: Substitute must meet or exceed 2500Vrms isolation rating
• Current Transfer Ratio: Minimum 1000% @ 1mA ensures consistent input-to-output signal transfer
• Maximum Output Voltage & Current: 300V maximum and 150mA per channel capacity must be maintained
• Surface Mount Packaging: Physical form factor must accommodate SMD assembly processes
• Operating Temperature Range: Substitute must support the -55°C to 100°C minimum operating window

The TLP187(TPL,E) meets all substitution criteria while offering enhanced isolation voltage (3750Vrms) and extended upper operating temperature (110°C), making it a direct functional replacement.

Parameter Comparison

Engineering Selection Recommendations

The TLP187(TPL,E) is the qualified substitute for the obsolete TLP127(HIT-TPL,F). Selection is supported by the following factors:

• Product Status: The TLP187(TPL,E) maintains active production status, ensuring long-term availability and supply chain continuity
• Functional Equivalence: Identical channel count, output topology, current transfer ratio, and switching characteristics preserve circuit behavior
• Enhanced Isolation: The 3750Vrms isolation rating exceeds the 2500Vrms requirement, providing additional safety margin in high-voltage applications
• Extended Temperature Range: Upper operating limit of 110°C accommodates thermal environments beyond the original specification
• Compliance: Both parts carry identical ECCN classification (EAR99) and MSL rating (1), maintaining regulatory and handling requirements
• RoHS3 Compliance: The TLP187(TPL,E) is RoHS3 compliant, meeting modern environmental standards

Package geometry differs between the two parts (6-MFSOP Gull Wing versus 6-SOIC), requiring PCB layout verification during substitution.

Frequently Asked Questions (FAQ)

Q: Can the TLP187(TPL,E) directly replace the TLP127(HIT-TPL,F) in existing designs?

A: Functional replacement is supported by matching channel count, output type, current transfer ratio, and switching performance. However, package geometry differs (6-MFSOP Gull Wing versus 6-SOIC), requiring PCB footprint and layout verification before implementation.

Q: What is the significance of the higher isolation voltage in the TLP187(TPL,E)?

A: The TLP187(TPL,E) provides 3750Vrms isolation compared to 2500Vrms in the TLP127(HIT-TPL,F). This enhancement increases safety margin in high-voltage isolation applications without affecting circuit compatibility, as the substitute meets or exceeds all critical electrical parameters.

Q: Are there differences in input or output electrical characteristics?

A: Input type (DC) and output stage (Darlington) are identical. Output voltage and current ratings (300V maximum, 150mA per channel) match exactly. Forward voltage differs slightly (1.25V versus 1.15V typical), which is within normal component tolerance and does not affect circuit operation.

Q: What packaging considerations apply to this substitution?

A: The TLP127(HIT-TPL,F) uses 6-MFSOP (4 Lead) Gull Wing packaging, while the TLP187(TPL,E) uses 6-SOIC (0.173", 4.40mm Width) packaging. Pin configuration and lead spacing differ, requiring new PCB footprint design and assembly process validation.

Q: Is the TLP187(TPL,E) available in the same packaging options?

A: The TLP187(TPL,E) is supplied in Cut Tape (CT) and Digi-Reel packaging formats. The original TLP127(HIT-TPL,F) packaging format is not specified in the available data. Confirm packaging requirements with your procurement process.

Q: Are there compliance or regulatory differences between these parts?

A: Both parts carry identical ECCN classification (EAR99) and Moisture Sensitivity Level (1 - Unlimited). The TLP187(TPL,E) is RoHS3 compliant and REACH unaffected, meeting current environmental standards. No regulatory barriers exist to substitution.