TIP127TU Equivalent & Substitute Parts

Part Overview

The TIP127TU is a PNP Darlington bipolar junction transistor manufactured by onsemi, rated for 100 V collector-emitter breakdown voltage and 5 A maximum collector current in a TO-220-3 through-hole package. This device is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The TIP127TU serves applications requiring medium-power PNP switching and amplification in industrial and consumer electronics.

Substiute Parts

TIP127TU

onsemiIn Stock: 1550TIP127TU Datasheet

Current PartRFQ

TIP127G

onsemiIn Stock: 1984TIP127G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TIP127TU is determined by electrical and mechanical parameter equivalence within the PNP Darlington transistor category. The critical parameters governing substitution are:

• Transistor Type: PNP - Darlington configuration
• Maximum Collector Current (Ic): 5 A minimum
• Collector-Emitter Breakdown Voltage: 100 V minimum
• DC Current Gain (hFE): 1000 minimum at specified conditions
• Maximum Power Dissipation: 2 W minimum
• Package Type: TO-220-3 through-hole mounting
• Vce Saturation: 4 V maximum at rated conditions

The TIP127G qualifies as a direct substitute based on matching all electrical specifications and maintaining identical package configuration. The substitute part demonstrates equivalent or superior performance across all specified parameters while maintaining mechanical compatibility with existing PCB layouts and thermal management solutions.

Parameter Comparison

Engineering Selection Recommendations

The TIP127G is the direct equivalent substitute for the obsolete TIP127TU. Both devices share identical electrical specifications across all critical parameters: collector current rating, breakdown voltage, saturation characteristics, current gain, and power dissipation. The mechanical compatibility is complete, with both parts utilizing the TO-220-3 through-hole package.

The primary distinction between the two parts is product status: the TIP127TU is obsolete, while the TIP127G maintains active production status. This status difference ensures long-term availability and supply chain continuity for the TIP127G. Both parts carry REACH Unaffected compliance and EAR99 export classification.

The TIP127G is RoHS3 compliant, providing additional environmental and regulatory alignment for new designs and procurement cycles. The substitute part is available in higher inventory quantities, supporting both immediate requirements and future production needs.

Frequently Asked Questions (FAQ)

Q: Can the TIP127G directly replace the TIP127TU without circuit modifications?

A: Yes. The TIP127G provides identical electrical performance across all specified parameters. No circuit modifications are required for direct substitution. Both parts operate within the same voltage, current, and thermal specifications.

Q: Are there differences in the package or pinout between these parts?

A: No. Both the TIP127TU and TIP127G use the TO-220-3 through-hole package with identical pinout and mechanical dimensions. PCB layouts and thermal management solutions designed for the TIP127TU are fully compatible with the TIP127G.

Q: What is the significance of the product status difference?

A: The TIP127TU is classified as obsolete, indicating discontinued manufacturing and limited availability. The TIP127G is active production, ensuring reliable long-term supply and procurement stability. For new designs and ongoing production, the TIP127G is the recommended selection.

Q: Are there compliance or certification differences between the two parts?

A: Both parts carry REACH Unaffected status and EAR99 export classification. The TIP127G additionally carries RoHS3 compliance certification, providing enhanced environmental and regulatory alignment for applications subject to RoHS requirements.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution is determined by matching transistor type (PNP - Darlington), maximum collector current (5 A), collector-emitter breakdown voltage (100 V), DC current gain (1000 minimum), Vce saturation (4 V maximum), and maximum power dissipation (2 W). The TIP127G meets all these criteria.

Q: Is the TIP127G suitable for high-temperature applications?

A: Both parts are rated for maximum junction temperature of 150 °C. The TIP127G specifies an operating temperature range of −65 °C to 150 °C, providing full coverage for standard industrial and consumer electronics applications within these thermal limits.