2SA1576A-Q-TP Equivalent & Substitute Parts

Part Overview

The 2SA1576A-Q-TP is a PNP bipolar junction transistor manufactured by Micro Commercial Co, designed for interface applications in surface mount configurations. This transistor operates at a maximum collector current of 150 mA with a 50 V collector-emitter breakdown voltage and delivers 200 mW maximum power dissipation. The device is classified as Active product status and is suitable for general-purpose switching and amplification circuits requiring moderate frequency response up to 100 MHz.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the specified parameter ranges, allowing for design flexibility, supply chain alternatives, or inventory optimization without compromising circuit functionality.

Substiute Parts

2SA1576A-Q-TP

Micro Commercial CoIn Stock: 9772SA1576A-Q-TP Datasheet

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2SA1586-GR,LF

Toshiba Semiconductor and StorageIn Stock: 180322SA1586-GR,LF Datasheet

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BC857AW-7-F

Diodes IncorporatedIn Stock: 6173BC857AW-7-F Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 2SA1576A-Q-TP is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Transistor type must be PNP
• Maximum collector current (Ic) must equal or exceed 150 mA
• Maximum collector-emitter breakdown voltage (VBRCEO) must equal or exceed 50 V
• Maximum power dissipation must equal or exceed 200 mW
• Operating temperature range must encompass the application requirements

Mechanical Compatibility Criteria:

• Mounting type must be Surface Mount
• Package must be SC-70 or SOT-323 (pin-compatible configurations)

Compliance Criteria:

• Product status must be Active
• REACH compliance status must be REACH Unaffected or compliant

Parts meeting all electrical, mechanical, and compliance criteria are classified as direct substitutes. Parts with reduced electrical ratings in specific parameters are classified as conditional substitutes, applicable only when circuit design margins permit operation within the reduced specification.

Parameter Comparison

Engineering Selection Recommendations

2SA1586-GR,LF (Toshiba Semiconductor and Storage)

This part maintains electrical compatibility with the 2SA1576A-Q-TP in collector current (150 mA) and collector-emitter breakdown voltage (50 V). Both devices are Active status with REACH Unaffected compliance. The 2SA1586-GR,LF is supplied in Tape & Reel packaging with RoHS3 compliance and MSL 1 rating. Selection of this substitute is appropriate when power dissipation requirements do not exceed 100 mW and transition frequency requirements do not exceed 80 MHz. The maximum operating temperature of 125°C is lower than the 2SA1576A-Q-TP; applications requiring operation above 125°C require verification of thermal margins.

BC857AW-7-F (Diodes Incorporated)

This part provides higher transition frequency (200 MHz) and maintains the 200 mW power dissipation rating of the 2SA1576A-Q-TP. Both devices support the full -55°C to 150°C operating temperature range and are Active status with REACH Unaffected compliance. The BC857AW-7-F is supplied in Tape & Reel packaging with RoHS3 compliance and MSL 1 rating. Selection of this substitute is appropriate when maximum collector current requirements do not exceed 100 mA and collector-emitter breakdown voltage requirements do not exceed 45 V. Applications requiring the full 150 mA collector current or 50 V breakdown voltage cannot use this substitute.

Frequently Asked Questions (FAQ)

Q: Can the 2SA1586-GR,LF replace the 2SA1576A-Q-TP in all applications?

A: The 2SA1586-GR,LF is electrically compatible for collector current and breakdown voltage specifications. However, the maximum power dissipation is reduced to 100 mW compared to 200 mW for the 2SA1576A-Q-TP. Applications operating at power levels between 100 mW and 200 mW require design modification or selection of an alternative substitute. Additionally, the maximum operating temperature is 125°C versus 150°C for the main part.

Q: Is the BC857AW-7-F suitable for applications requiring 150 mA collector current?

A: No. The BC857AW-7-F has a maximum collector current rating of 100 mA, which is below the 150 mA specification of the 2SA1576A-Q-TP. This substitute is suitable only for applications where the maximum required collector current does not exceed 100 mA.

Q: Are the package configurations of these parts interchangeable?

A: The 2SA1576A-Q-TP and BC857AW-7-F both use SOT-323 packaging. The 2SA1586-GR,LF uses SC-70 packaging. SC-70 and SOT-323 are pin-compatible configurations with identical pinout and footprint dimensions, allowing mechanical interchangeability on standard surface mount PCBs.

Q: What compliance certifications apply to all three parts?

A: All three parts are classified as REACH Unaffected and carry ECCN EAR99 designation. The 2SA1586-GR,LF and BC857AW-7-F are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. The 2SA1576A-Q-TP compliance documentation does not specify RoHS status in the provided parameters.

Q: Which substitute offers the highest frequency performance?

A: The BC857AW-7-F provides transition frequency of 200 MHz, compared to 100 MHz for the 2SA1576A-Q-TP and 80 MHz for the 2SA1586-GR,LF. Selection of the BC857AW-7-F is appropriate for applications requiring enhanced high-frequency performance, provided that collector current and voltage requirements remain within its specifications.

Q: Can these parts be used interchangeably in existing designs without PCB modification?

A: Yes, all three parts use compatible surface mount packages (SOT-323 or SC-70) with identical pinout and footprint dimensions. PCB modification is not required for mechanical substitution. However, circuit performance must be verified to ensure that electrical parameter differences do not affect design functionality.