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

Part Overview

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

Substiute Parts

TLP127(KMC-TPL,F)

Toshiba Electronic Devices and Storage CorporationIn Stock: 897TLP127(KMC-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(KMC-TPL,F) is determined by the following critical parameters:

• Isolation Voltage: Minimum 2500Vrms required; higher isolation ratings are acceptable
• Output Configuration: Darlington output type mandatory
• Number of Channels: Single channel (1 channel) required
• Current Transfer Ratio: Minimum 1000% @ 1mA
• Maximum Output Voltage: 300V capability required
• Output Current: 150mA per channel minimum
• Input Type: DC input required
• Mounting Type: Surface Mount required
• Package Compatibility: Physical and electrical compatibility with 6-lead configurations

The TLP187(TPL,E) meets all substitution criteria with enhanced isolation voltage (3750Vrms) and extended operating temperature range, while maintaining identical electrical performance characteristics for the primary application parameters.

Parameter Comparison

Engineering Selection Recommendations

The TLP187(TPL,E) is the direct substitute for the obsolete TLP127(KMC-TPL,F). Selection is based on the following factors:

Product Status: The TLP187(TPL,E) maintains active product status with Toshiba, ensuring continued availability and supply chain reliability compared to the obsolete TLP127(KMC-TPL,F).

Electrical Equivalence: Both components share identical core electrical specifications including 1000% minimum current transfer ratio, 300V maximum output voltage, and 150mA output current capability. Timing characteristics (turn-on/off and rise/fall times) are identical.

Enhanced Isolation: The TLP187(TPL,E) provides 3750Vrms isolation voltage compared to 2500Vrms in the TLP127(KMC-TPL,F), offering superior isolation margin for high-voltage applications.

Extended Temperature Range: The TLP187(TPL,E) operates to 110°C maximum compared to 100°C for the TLP127(KMC-TPL,F), providing broader thermal operating capability.

Compliance: Both components carry identical ECCN (EAR99) and HTSUS classifications. The TLP187(TPL,E) is RoHS3 compliant and REACH unaffected.

Package Consideration: The TLP187(TPL,E) uses 6-SOIC packaging versus the 6-SMD gull wing package of the TLP127(KMC-TPL,F). PCB layout modifications are required for package transition.

Frequently Asked Questions (FAQ)

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

A: Electrical substitution is valid. The TLP187(TPL,E) meets or exceeds all electrical performance requirements of the TLP127(KMC-TPL,F). However, package geometry differs (6-SOIC versus 6-SMD gull wing), requiring PCB layout modifications.

Q: What are the key differences between these two optoisolators?

A: Primary differences are product status (active versus obsolete), isolation voltage (3750Vrms versus 2500Vrms), maximum operating temperature (110°C versus 100°C), and package type (6-SOIC versus 6-SMD). Electrical performance parameters are identical.

Q: Is the higher isolation voltage of the TLP187(TPL,E) a concern for applications designed for 2500Vrms?

A: No. Higher isolation voltage is a beneficial characteristic that maintains full compatibility with applications specified for 2500Vrms isolation. The TLP187(TPL,E) provides additional isolation margin without affecting circuit operation.

Q: What packaging considerations apply when transitioning from TLP127(KMC-TPL,F) to TLP187(TPL,E)?

A: The TLP127(KMC-TPL,F) uses 6-SMD (4 Leads) gull wing packaging, while the TLP187(TPL,E) uses 6-SOIC (0.173", 4.40mm Width) packaging. Footprint dimensions and lead spacing differ, requiring PCB redesign and revalidation of assembly processes.

Q: Are there any compliance or regulatory differences between these components?

A: Both components share identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications. The TLP187(TPL,E) includes RoHS3 compliance and REACH unaffected status, providing additional regulatory alignment for modern applications.

Q: What is the current transfer ratio specification, and is it identical between both parts?

A: Both the TLP127(KMC-TPL,F) and TLP187(TPL,E) specify a minimum current transfer ratio of 1000% at 1mA input current, ensuring equivalent optical coupling efficiency and signal transmission characteristics.