TLP127(PSION-TPR,F) Equivalent & Substitute Parts

Part Overview

The TLP127(PSION-TPR,F) is a single-channel optoisolator with Darlington output manufactured by Toshiba Semiconductor and Storage. This component provides 2500Vrms isolation and is designed for DC input applications requiring galvanic isolation with Darlington output configuration. The part is currently obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

TLP127(PSION-TPR,F

Toshiba Semiconductor and StorageIn Stock: 831TLP127(PSION-TPR,F Datasheet

Current PartRFQ

TLP187(TPR,E

Toshiba Semiconductor and StorageIn Stock: 3734TLP187(TPR,E Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLP127(PSION-TPR,F) is determined by the following critical parameters:

• Single-channel configuration (Number of Channels = 1)
• Darlington output topology
• Isolation voltage rating of 2500Vrms or higher
• Maximum output voltage of 300V or greater
• Output current capability of 150mA or greater
• Current transfer ratio minimum of 1000% @ 1mA
• Surface mount technology
• Operating temperature range encompassing -55°C to 100°C

The TLP187(TPR,E) meets all substitution criteria, offering enhanced isolation voltage (3750Vrms), extended upper operating temperature limit (110°C), and active product status with RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

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

All critical electrical parameters match or exceed the original specification. The substitute provides higher isolation voltage (3750Vrms versus 2500Vrms), offering improved safety margin in isolation-critical applications. The extended operating temperature range (-55°C to 110°C) accommodates broader thermal environments compared to the original part's -55°C to 100°C range.

The TLP187(TPR,E) maintains active product status with RoHS3 compliance and REACH unaffected designation, ensuring long-term availability and regulatory alignment. Moisture sensitivity level remains unchanged at MSL 1 (Unlimited).

Package footprint differs between the two parts: the original uses 6-SMD (4 Leads) Gull Wing configuration, while the substitute employs 6-SOIC (0.173", 4.40mm Width) with 4 leads. PCB layout modification is required for physical implementation.

Frequently Asked Questions (FAQ)

Q: Can the TLP187(TPR,E) directly replace the TLP127(PSION-TPR,F) without circuit modification?

A: Electrical substitution is valid. All functional parameters match or exceed the original specification. However, package footprint differs, requiring PCB layout redesign. Pin configuration remains compatible at the functional level (single channel, Darlington output, 4-lead configuration).

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

A: The TLP187(TPR,E) provides 3750Vrms isolation compared to the original 2500Vrms. This represents a 50% increase in isolation capability, providing enhanced safety margin and broader applicability in high-voltage isolation scenarios. Applications requiring exactly 2500Vrms isolation benefit from this additional margin.

Q: Are there any thermal performance differences between these parts?

A: The TLP187(TPR,E) extends the upper operating temperature limit to 110°C versus the original 100°C. Both parts maintain identical lower temperature limits at -55°C. This extended range accommodates higher ambient or junction temperature environments.

Q: What packaging considerations apply to this substitution?

A: The original TLP127(PSION-TPR,F) uses 6-SMD Gull Wing packaging, while the TLP187(TPR,E) uses 6-SOIC configuration. Both are surface mount with 4 leads. Physical board layout and reflow profile may require adjustment due to different package geometries and lead spacing.

Q: Is the TLP187(TPR,E) suitable for new designs?

A: Yes. The TLP187(TPR,E) maintains active product status with RoHS3 compliance and REACH unaffected designation, making it appropriate for new design implementations. The obsolete status of the original part makes the substitute the standard choice for ongoing development.

Q: Do the timing characteristics remain identical?

A: Yes. Turn-on/turn-off times (50µs, 15µs) and rise/fall times (40µs, 15µs) are identical between both parts, ensuring equivalent switching performance in timing-critical applications.