TIP131 Equivalent & Substitute Parts

Part Overview

The TIP131 is an NPN Darlington bipolar junction transistor manufactured by onsemi, designed for through-hole applications in the TO-220-3 package. This device is rated for 80 V collector-emitter breakdown voltage and 8 A maximum collector current, with a maximum power dissipation of 2 W. The TIP131 is classified as obsolete, making identification of equivalent substitute parts necessary for ongoing design support and procurement continuity. Active alternatives with compatible electrical and mechanical specifications are available to maintain circuit functionality in new production runs or replacement applications.

Substiute Parts

TIP131

onsemiIn Stock: 1437TIP131 Datasheet

Current PartRFQ

BDX53B

STMicroelectronicsIn Stock: 7404BDX53B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TIP131 is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Requirements:

• Transistor type must be NPN - Darlington
• Maximum collector current (Ic) must be ≥ 8 A
• Maximum collector-emitter breakdown voltage (VCEO) must be ≥ 80 V
• Maximum collector cutoff current must be ≤ 500 µA
• Operating temperature range must encompass the TIP131 range (−65 to 150°C)

Mechanical Compatibility Requirements:

• Package type must be TO-220-3
• Mounting type must be Through Hole

Substitute Identification: The BDX53B meets all electrical and mechanical compatibility criteria. Both devices share identical maximum ratings for collector current (8 A) and collector-emitter breakdown voltage (80 V), operate within compatible temperature ranges, and utilize the same TO-220-3 through-hole package configuration. The BDX53B is manufactured by STMicroelectronics and maintains active product status with RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: BDX53B

The BDX53B is the qualified substitute for the TIP131 based on the following factors:

1. Electrical Equivalence: Both devices are rated for 8 A maximum collector current and 80 V collector-emitter breakdown voltage. The BDX53B maintains the same NPN Darlington configuration and cutoff current specification (500 µA maximum).

2. Mechanical Compatibility: Both devices utilize the TO-220-3 through-hole package, ensuring direct pin-compatible replacement without circuit board modifications.

3. Product Status: The BDX53B is classified as active, providing long-term availability and supply chain continuity compared to the obsolete TIP131.

4. Regulatory Compliance: The BDX53B is RoHS3 compliant, meeting current environmental and regulatory requirements. The TIP131 is RoHS non-compliant, making the BDX53B the appropriate choice for applications subject to RoHS directives.

5. Thermal Performance: The BDX53B is rated for 60 W maximum power dissipation, compared to 2 W for the TIP131. This enhanced thermal capability provides additional design margin in power-limited applications.

Selection of the BDX53B eliminates obsolescence risk and ensures compliance with modern regulatory standards while maintaining full electrical and mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can the BDX53B directly replace the TIP131 without circuit modifications?

A: Yes. Both devices share identical maximum ratings for collector current (8 A) and collector-emitter breakdown voltage (80 V), operate within the same temperature range, and use the TO-220-3 through-hole package. Direct pin-for-pin substitution is supported.

Q: What are the key differences between the TIP131 and BDX53B?

A: The primary differences are product status, regulatory compliance, and power dissipation rating. The BDX53B is active and RoHS3 compliant, whereas the TIP131 is obsolete and RoHS non-compliant. The BDX53B is rated for 60 W maximum power dissipation compared to 2 W for the TIP131. Both devices meet the same electrical specifications for collector current, breakdown voltage, and cutoff current.

Q: Are there any performance differences in saturation voltage between these devices?

A: The devices have different saturation voltage specifications at different test conditions. The TIP131 specifies 3 V maximum at 30 mA base current and 6 A collector current. The BDX53B specifies 2 V maximum at 12 mA base current and 3 A collector current. These differences reflect different measurement conditions rather than incompatibility; both devices operate within acceptable saturation parameters for typical switching applications.

Q: Is the BDX53B suitable for new designs?

A: Yes. The BDX53B is classified as active and RoHS3 compliant, making it the appropriate choice for new designs. The TIP131 should not be used in new designs due to its obsolete status.

Q: What is the significance of the RoHS compliance difference?

A: RoHS3 compliance indicates the BDX53B meets current environmental and regulatory requirements for hazardous substance restrictions. The TIP131's non-compliance status may restrict its use in applications subject to RoHS directives or in regions with strict environmental regulations. The BDX53B eliminates this compliance risk.

Q: Can the BDX53B handle higher power dissipation than the TIP131?

A: Yes. The BDX53B is rated for 60 W maximum power dissipation, compared to 2 W for the TIP131. This higher rating provides additional thermal margin in applications approaching power limits, though both devices are electrically equivalent at the specified 8 A collector current and 80 V breakdown voltage.

Q: Are there any package or pinout differences?

A: No. Both devices use the TO-220-3 through-hole package with identical pinout. No circuit board modifications are required for substitution.