BSR43-TP Equivalent & Substitute Parts

Part Overview

The BSR43-TP is an NPN bipolar junction transistor manufactured by Micro Commercial Co, designed for general-purpose switching and amplification applications. This surface mount device operates at 80 V collector-emitter breakdown voltage with a maximum collector current of 1 A and 500 mW power dissipation. The part is currently active in production with 762 units in stock. Substitute parts are identified when equivalent electrical characteristics and mechanical compatibility exist, enabling design flexibility and supply chain continuity.

Substiute Parts

BSR43-TP

Micro Commercial CoIn Stock: 852BSR43-TP Datasheet

Current PartRFQ

BCX5616TA

Diodes IncorporatedIn Stock: 23958BCX5616TA Datasheet

SimilarRFQ

BSR43,115

Nexperia USA Inc.In Stock: 1989BSR43,115 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BSR43-TP are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Transistor Type: NPN
• Voltage - Collector Emitter Breakdown (Max): 80 V
• Current - Collector (Ic) (Max): 1 A
• Vce Saturation (Max) @ Ib, Ic: 500mV @ 50mA, 500mA
• Current - Collector Cutoff (Max): 100nA (ICBO)
• Mounting Type: Surface Mount
• Package / Case: TO-243AA
• Supplier Device Package: SOT-89 or SOT-89-3

Secondary Compatibility Parameters:

• DC Current Gain (hFE) (Min): 100 or greater
• Operating Temperature Range: Minimum -55°C or lower, Maximum 150°C or higher
• Frequency - Transition: 100 MHz or greater

Parts meeting all primary criteria and maintaining secondary parameter compatibility are classified as direct substitutes. Variations in power dissipation rating, transition frequency, or temperature range do not disqualify substitution when primary electrical and mechanical specifications are met.

Parameter Comparison

Engineering Selection Recommendations

BCX5616TA (Diodes Incorporated)

The BCX5616TA meets all primary substitution criteria with identical voltage, current, and saturation specifications. This part offers enhanced performance characteristics including 1 W maximum power dissipation (versus 500 mW), 150 MHz transition frequency (versus 100 MHz), and extended lower operating temperature range (-65°C versus -55°C). The BCX5616TA carries RoHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), indicating superior environmental qualification. Packaging is supplied as Cut Tape and Digi-Reel, providing alternative procurement formats. This substitute is suitable for applications requiring higher power handling or improved thermal performance.

BSR43,115 (Nexperia USA Inc.)

The BSR43,115 is a direct equivalent sharing the same base product number (BSR43) with identical electrical specifications at the primary test conditions. This part provides 1.35 W maximum power dissipation and maintains 100 MHz transition frequency matching the original design. The BSR43,115 is supplied on Tape & Reel and carries RoHS3 compliance with Moisture Sensitivity Level 1 (Unlimited). This substitute is appropriate for applications requiring higher power dissipation margins while maintaining identical switching characteristics.

Both substitute parts are active products with established supply availability and full compliance certifications. Selection between substitutes depends on procurement format preference, power dissipation requirements, and frequency performance margins.

Frequently Asked Questions (FAQ)

Q: Can BCX5616TA replace BSR43-TP in all applications?

A: Yes. The BCX5616TA meets all primary electrical specifications (80 V breakdown, 1 A collector current, 500 mV saturation voltage, 100 nA cutoff current) and mechanical requirements (SOT-89 surface mount package, TO-243AA case). Enhanced performance characteristics (1 W power rating, 150 MHz transition frequency, -65°C lower temperature limit) provide additional design margin.

Q: What is the difference between SOT-89 and SOT-89-3 packaging?

A: Both designations refer to the same physical package footprint (TO-243AA). SOT-89-3 is a supplier-specific nomenclature used by Diodes Incorporated. Pin configuration and PCB layout compatibility are identical.

Q: Is BSR43,115 identical to BSR43-TP?

A: Both parts share the same base product number (BSR43) and identical electrical specifications at primary test conditions (100 mA collector current, 5 V collector-emitter voltage). The primary difference is manufacturer (Nexperia versus Micro Commercial Co) and power dissipation rating (1.35 W versus 500 mW). Electrical performance in switching applications is equivalent.

Q: Which substitute offers the best thermal performance?

A: BSR43,115 provides the highest power dissipation rating at 1.35 W, followed by BCX5616TA at 1 W. Selection depends on circuit power dissipation requirements and thermal management design.

Q: Are all substitutes RoHS compliant?

A: BCX5616TA and BSR43,115 carry explicit RoHS3 compliance certification. BSR43-TP lists REACH Unaffected status. Verify specific RoHS requirements for your application and region.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. All three parts use identical TO-243AA case dimensions and SOT-89 pin configuration, enabling direct PCB footprint compatibility without layout modification.

Q: What is the minimum operating temperature difference between parts?

A: BCX5616TA operates to -65°C, while BSR43-TP operates to -55°C. This 10°C difference is significant only in extreme low-temperature applications. BSR43,115 specification does not provide a minimum temperature value.