MPSW92G Equivalent & Substitute Parts

Part Overview

The MPSW92G is a PNP bipolar junction transistor manufactured by onsemi, rated for 300 V collector-emitter breakdown voltage and 500 mA maximum collector current in a Through Hole TO-92 package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The MPSW92G serves in applications requiring moderate voltage and current switching with 1 W power dissipation capability.

Substiute Parts

MPSW92G

onsemiIn Stock: 881MPSW92G Datasheet

Current PartRFQ

ZTX757

Diodes IncorporatedIn Stock: 9479ZTX757 Datasheet

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ZTX957

Diodes IncorporatedIn Stock: 3960ZTX957 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MPSW92G is determined by the following critical parameters:

Primary Compatibility Criteria:

• Transistor Type: PNP configuration
• Voltage Rating: Collector-Emitter Breakdown voltage ≥ 300 V
• Current Rating: Collector current (Ic) ≥ 500 mA
• Power Dissipation: ≥ 1 W
• Mounting: Through Hole configuration
• Package Compatibility: TO-92 or TO-92 compatible form factor

Substitute Parts Identified:

The ZTX757 (Diodes Incorporated) and ZTX957 (Diodes Incorporated) meet the electrical and mechanical requirements for substitution. Both devices are active products with TO-92 compatible packaging, ensuring mechanical and electrical interchangeability within the specified parameter envelope.

Parameter Comparison

Engineering Selection Recommendations

ZTX757 Selection Criteria:

The ZTX757 is suitable for direct substitution in applications where the MPSW92G collector current requirement does not exceed 500 mA and transition frequency of 30 MHz is acceptable. This device is an active product with RoHS3 compliance, providing long-term availability and regulatory alignment. The ZTX757 offers improved DC current gain (50 minimum versus 25 minimum) and lower collector cutoff current (100 nA versus 250 nA), resulting in enhanced switching characteristics. Extended operating temperature range (-55°C to 200°C) provides additional thermal margin compared to the MPSW92G.

ZTX957 Selection Criteria:

The ZTX957 is suitable for applications requiring higher collector current capability (1 A maximum versus 500 mA) or higher transition frequency (85 MHz versus 50 MHz). This device provides superior performance headroom with increased power dissipation (1.2 W versus 1 W) and significantly improved DC current gain (100 minimum). The ZTX957 is an active product with RoHS3 compliance. Selection of the ZTX957 is appropriate when design margins require higher current handling or faster switching performance than the MPSW92G specification.

Compliance Considerations:

Both substitute parts are REACH Unaffected and carry RoHS3 compliance certification, meeting current regulatory requirements. Both devices maintain MSL Level 1 (Unlimited) moisture sensitivity classification, consistent with the original MPSW92G.

Frequently Asked Questions (FAQ)

Q: Can the ZTX757 be used as a direct pin-for-pin replacement for the MPSW92G?

A: Yes. Both devices are PNP transistors in TO-92 compatible packages with identical pin configurations. The ZTX757 meets or exceeds all critical electrical parameters of the MPSW92G within the 500 mA collector current range.

Q: What is the primary difference between the ZTX757 and ZTX957?

A: The ZTX957 is rated for 1 A maximum collector current and 85 MHz transition frequency, compared to the ZTX757 at 500 mA and 30 MHz. The ZTX957 also provides higher power dissipation (1.2 W) and superior DC current gain (100 minimum). Selection depends on whether the application requires the higher current and frequency performance of the ZTX957.

Q: Are there any package compatibility concerns when substituting the MPSW92G?

A: No. Both the ZTX757 and ZTX957 are supplied in E-Line packages that are mechanically and electrically compatible with TO-92 form factor. Through Hole mounting type is identical across all three devices.

Q: Does the extended operating temperature range of the substitute parts affect compatibility?

A: No. The extended temperature range (-55°C to 200°C for both substitutes versus -55°C to 150°C for the MPSW92G) provides additional operational margin and does not create compatibility issues. Applications operating within the original MPSW92G temperature range function identically with the substitute parts.

Q: What is the significance of the lower collector cutoff current in the substitute parts?

A: Lower collector cutoff current (ICBO) in the ZTX757 (100 nA) and ZTX957 (50 nA) compared to the MPSW92G (250 nA) indicates reduced leakage current. This results in improved switching characteristics and lower standby power consumption in applications where the transistor is in the off state.

Q: Are the substitute parts suitable for high-frequency applications?

A: The ZTX757 operates at 30 MHz transition frequency, which is lower than the MPSW92G (50 MHz). For applications requiring transition frequencies above 30 MHz, the ZTX957 at 85 MHz provides superior high-frequency performance.

Q: What regulatory compliance certifications apply to the substitute parts?

A: Both the ZTX757 and ZTX957 are RoHS3 compliant and REACH Unaffected. Both maintain MSL Level 1 (Unlimited) moisture sensitivity classification, consistent with the original MPSW92G.