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

Part Overview

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

Substiute Parts

TLP127(TOJS-TPR,F)

Toshiba Semiconductor and StorageIn Stock: 1062TLP127(TOJS-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 of the TLP127(TOJS-TPR,F) is determined by the following critical parameters:

• Single-channel Darlington output optoisolator configuration
• Isolation voltage rating of 2500Vrms or higher
• Current transfer ratio minimum of 1000% @ 1mA
• Maximum output voltage of 300V
• Output current capability of 150mA per channel
• DC input type
• Surface mount packaging with 4-lead configuration
• Operating temperature range of -55°C to 100°C or wider

The TLP187(TPR,E) meets these substitution criteria through equivalent electrical performance and compatible packaging specifications.

Parameter Comparison

Engineering Selection Recommendations

The TLP187(TPR,E) is an active product with higher isolation voltage rating (3750Vrms versus 2500Vrms), providing enhanced safety margin in isolation-critical applications. Both components share identical electrical performance for current transfer ratio, output voltage, output current, and switching characteristics. The TLP187(TPR,E) offers an extended operating temperature range to 110°C and RoHS3 compliance, making it suitable for modern manufacturing and environmental standards. Package differences exist between the two components: the TLP127 uses 6-SMD gull wing configuration while the TLP187 uses 6-SOIC packaging. PCB layout and footprint modifications are required when transitioning between these packages.

Frequently Asked Questions (FAQ)

Q: Can TLP187(TPR,E) directly replace TLP127(TOJS-TPR,F) without circuit modifications?

A: Electrical substitution is valid based on matching current transfer ratio, output voltage, output current, and switching characteristics. However, package differences require PCB footprint redesign. The TLP187 uses 6-SOIC packaging while the TLP127 uses 6-SMD gull wing configuration.

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

A: The TLP187 provides 3750Vrms isolation versus 2500Vrms in the TLP127. This higher rating offers increased safety margin and may be required in applications with higher voltage isolation requirements or stricter safety standards.

Q: Are there compliance differences between these components?

A: The TLP187(TPR,E) is RoHS3 compliant and REACH unaffected, while the TLP127 status is not specified. Both share identical ECCN (EAR99) and HTSUS classifications.

Q: What are the thermal operating range differences?

A: The TLP127 operates from -55°C to 100°C, while the TLP187 extends to 110°C maximum. Applications requiring operation above 100°C require the TLP187.

Q: How do the forward voltage characteristics compare?

A: Typical forward voltage is 1.15V for TLP127 versus 1.25V for TLP187. Both maintain identical maximum DC forward current of 50mA and Vce saturation of 1.2V.