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

Part Overview

The TLP127(DEL-TPL,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 switching capability. The part is currently obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

TLP127(DEL-TPL,F)

Toshiba Semiconductor and StorageIn Stock: 972TLP127(DEL-TPL,F) Datasheet

Current PartRFQ

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(DEL-TPL,F) is determined by the following critical parameters:

• Single-channel configuration with Darlington output topology
• Minimum isolation voltage of 2500Vrms
• 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 compatibility

The TLP187(TPL,E) qualifies as a direct substitute based on these parameters. While the TLP187 provides enhanced isolation voltage (3750Vrms) and extended upper operating temperature (110°C), it maintains all critical functional parameters required for the TLP127 application space.

Parameter Comparison

Engineering Selection Recommendations

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

• Active product status ensuring long-term availability and supply chain continuity
• ROHS3 compliance meeting current environmental and regulatory requirements
• Identical functional performance across all critical isolation, switching, and output parameters
• Enhanced isolation voltage providing additional design margin
• Extended upper operating temperature range supporting broader application environments
• Maintained electrical characteristics including current transfer ratio, output voltage, and output current specifications

Package geometry differences between the 6-SMD Gull Wing (TLP127) and 6-SOIC (TLP187) require PCB layout modification. Both packages maintain 4-lead configuration and surface mount mounting type.

Frequently Asked Questions (FAQ)

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

A: The TLP187 provides functional equivalence across all critical electrical parameters. PCB layout modification is required due to package geometry differences (6-SMD Gull Wing versus 6-SOIC). Pin functionality and electrical performance remain compatible.

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

A: The TLP187 offers higher isolation voltage (3750Vrms versus 2500Vrms), extended operating temperature range (-55°C to 110°C versus -55°C to 100°C), and active product status. Package form factor differs between the two designs. All switching characteristics, output current capability, and Darlington output topology remain identical.

Q: Is the TLP187 suitable for applications requiring 2500Vrms isolation?

A: Yes. The TLP187 exceeds the 2500Vrms isolation requirement with 3750Vrms isolation capability, providing additional design margin without compromising performance.

Q: What packaging considerations apply when substituting these parts?

A: The TLP127 uses 6-SMD (4 Leads) Gull Wing packaging while the TLP187 uses 6-SOIC (0.173", 4.40mm Width) 4-lead packaging. PCB footprint and land pattern modifications are necessary. Both maintain surface mount mounting type and 4-lead configuration.

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

A: The TLP187 carries ROHS3 compliance certification. Both parts share identical ECCN (EAR99) and HTSUS classifications. Moisture sensitivity level is equivalent at MSL 1 (Unlimited) for both components.