MPSW05G Equivalent & Substitute Parts

Part Overview

The MPSW05G is an NPN bipolar junction transistor manufactured by onsemi, designed for general-purpose switching and amplification applications. This device features a maximum collector current of 500 mA, collector-emitter breakdown voltage of 60 V, and maximum power dissipation of 1 W in a Through Hole TO-92 package. The MPSW05G is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and component procurement.

Substiute Parts

MPSW05G

onsemiIn Stock: 772MPSW05G Datasheet

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2N3904BU

onsemiIn Stock: 221042N3904BU Datasheet

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2N4401BU

onsemiIn Stock: 99862N4401BU Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MPSW05G is determined by compatibility across the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Transistor type must be NPN
• Collector-emitter breakdown voltage must equal or exceed the original specification (60 V minimum)
• Maximum collector current must equal or exceed the original specification (500 mA minimum)
• Maximum power dissipation must support the intended application
• Operating temperature range must encompass the required operating conditions
• DC current gain (hFE) characteristics must be compatible with circuit design requirements

Mechanical Compatibility Criteria:

• Package type must be Through Hole TO-92-3 for direct pin-compatible substitution
• Mounting configuration must match the original Through Hole specification

The substitute parts listed below are evaluated against these criteria. Parts with reduced electrical ratings (lower voltage or current specifications) are included where the application permits operation within reduced parameter boundaries. Parts with enhanced specifications (higher voltage, current, or frequency capability) provide direct substitution with additional design margin.

Parameter Comparison

Engineering Selection Recommendations

2N3904BU Selection Criteria: The 2N3904BU is an active product with full RoHS3 compliance and REACH unaffected status. This device is suitable for applications where collector current requirements do not exceed 200 mA and collector-emitter voltage does not exceed 40 V. The 2N3904BU exhibits superior frequency response (300 MHz) compared to the MPSW05G. Applications requiring the full 500 mA collector current or 60 V breakdown voltage of the MPSW05G cannot use the 2N3904BU as a direct substitute.

2N4401BU Selection Criteria: The 2N4401BU is an active product with full RoHS3 compliance and REACH unaffected status. This device supports collector currents up to 600 mA, exceeding the MPSW05G specification. However, the 2N4401BU is rated for maximum 40 V collector-emitter breakdown voltage, which is below the MPSW05G 60 V specification. The 2N4401BU is suitable for applications operating at 40 V or below. Applications requiring the full 60 V breakdown voltage of the MPSW05G cannot use the 2N4401BU as a direct substitute.

Both substitute parts share identical operating temperature range (-55°C to 150°C) with the MPSW05G and are available in the same Through Hole TO-92-3 package configuration, enabling direct physical substitution where electrical parameters permit.

Frequently Asked Questions (FAQ)

Q: Can the 2N3904BU directly replace the MPSW05G in all applications?

A: No. The 2N3904BU has a maximum collector current rating of 200 mA, which is below the MPSW05G specification of 500 mA. Direct substitution is limited to applications where collector current does not exceed 200 mA. Additionally, the 2N3904BU maximum collector-emitter breakdown voltage is 40 V, below the MPSW05G 60 V rating.

Q: Can the 2N4401BU directly replace the MPSW05G in all applications?

A: No. The 2N4401BU has a maximum collector-emitter breakdown voltage of 40 V, which is below the MPSW05G specification of 60 V. Direct substitution is limited to applications where collector-emitter voltage does not exceed 40 V. The 2N4401BU supports higher collector current (600 mA) than the MPSW05G.

Q: Are the substitute parts physically compatible with the MPSW05G?

A: Yes. Both the 2N3904BU and 2N4401BU are packaged in Through Hole TO-92-3 configuration, identical to the MPSW05G. Pin-for-pin physical substitution is possible without PCB modification.

Q: What compliance certifications apply to the substitute parts?

A: Both 2N3904BU and 2N4401BU are RoHS3 compliant and REACH unaffected. Both carry EAR99 ECCN classification. The MPSW05G, being obsolete, does not carry RoHS3 compliance status.

Q: How do the frequency characteristics compare?

A: The 2N3904BU operates at 300 MHz transition frequency, and the 2N4401BU at 250 MHz, both exceeding the MPSW05G specification of 50 MHz. Higher frequency capability provides additional design margin for switching applications.

Q: What is the impact of different Vce saturation characteristics?

A: The 2N3904BU exhibits lower saturation voltage (300 mV) compared to the MPSW05G (400 mV), resulting in reduced power dissipation in saturated switching applications. The 2N4401BU exhibits higher saturation voltage (750 mV), which increases power dissipation. Circuit design must account for these differences in switching loss calculations.

Q: Can I use these parts interchangeably in a design rated for 60 V operation?

A: No. Both substitute parts are rated for maximum 40 V collector-emitter breakdown voltage. Use in circuits exceeding 40 V will exceed device ratings and create reliability risk.

Q: What inventory status should I consider for procurement?

A: The MPSW05G is obsolete with 689 units in stock. The 2N3904BU is active with 22,060 units in stock. The 2N4401BU is active with 9,900 units in stock. Active products provide superior long-term availability and supply chain stability.