CENW92 Equivalent & Substitute Parts

Part Overview

The CENW92 is a PNP bipolar junction transistor (BJT) manufactured by Central Semiconductor Corp, designed for through-hole applications in the TO-237AA package. This component operates at 300 V collector-emitter breakdown voltage with a maximum collector current of 500 mA and maximum power dissipation of 2.5 W. The CENW92 is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and production continuity.

Substiute Parts

CENW92

Central Semiconductor CorpIn Stock: 1176CENW92 Datasheet

Current PartRFQ

MPSA92 PBFREE

Central Semiconductor CorpIn Stock: 8586MPSA92 PBFREE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CENW92 is determined by strict electrical parameter matching within the PNP BJT category. The critical parameters that define substitutability are:

Electrical Compatibility Criteria:

• Transistor polarity: PNP type
• Voltage rating: Collector-emitter breakdown voltage of 300 V (minimum)
• Current rating: Collector current capacity of 500 mA (minimum)
• Frequency performance: Transition frequency of 50 MHz (minimum)

Mechanical Compatibility Criteria:

• Mounting configuration: Through-hole technology
• Package form factor: TO-92-3 or TO-237 series packages

The MPSA92 PBFREE meets all electrical parameters and operates in a compatible through-hole package (TO-92-3). While the package differs from the original TO-237AA, both are through-hole configurations suitable for PCB insertion and wave soldering processes. The MPSA92 PBFREE provides equivalent electrical performance with enhanced compliance status.

Parameter Comparison

Engineering Selection Recommendations

The MPSA92 PBFREE is the designated manufacturer substitute for the obsolete CENW92. Selection of this substitute is based on the following engineering factors:

Product Status: The CENW92 is obsolete, while the MPSA92 PBFREE maintains active production status, ensuring long-term availability and supply chain reliability.

Electrical Equivalence: Both devices share identical voltage and current ratings (300 V, 500 mA) and transition frequency (50 MHz), confirming functional compatibility in circuit applications.

Compliance Enhancement: The MPSA92 PBFREE is ROHS3 compliant, whereas the CENW92 is non-compliant. This upgrade supports modern manufacturing and environmental regulatory requirements.

Package Consideration: The MPSA92 PBFREE uses the TO-92-3 package instead of the original TO-237AA. Both are through-hole packages compatible with standard PCB assembly processes. PCB layout modifications may be required to accommodate the different pin spacing and physical dimensions of the TO-92-3 package.

Power Dissipation: The MPSA92 PBFREE has a lower maximum power rating (625 mW versus 2.5 W). Applications requiring sustained power dissipation above 625 mW must be evaluated for thermal management compatibility.

Frequently Asked Questions (FAQ)

Q: Can the MPSA92 PBFREE directly replace the CENW92 without PCB modifications?

A: Electrical substitution is valid; however, physical package differences require PCB layout changes. The TO-92-3 package has different pin spacing and body dimensions compared to the TO-237AA package. Mechanical compatibility must be verified during board redesign.

Q: What are the key electrical parameters that confirm substitutability?

A: The MPSA92 PBFREE matches the CENW92 in three critical parameters: PNP polarity, 300 V collector-emitter breakdown voltage, and 500 mA maximum collector current. These parameters define functional equivalence for circuit operation.

Q: Is the lower power rating of the MPSA92 PBFREE (625 mW vs. 2.5 W) a limitation?

A: The lower power rating applies to continuous dissipation capability. Applications must be reviewed to confirm that actual power dissipation remains within the 625 mW limit. Thermal analysis is required if the original design approached the 2.5 W maximum.

Q: Does the MPSA92 PBFREE offer compliance advantages?

A: Yes. The MPSA92 PBFREE is ROHS3 compliant, whereas the CENW92 is non-compliant. This substitution supports compliance with current environmental and manufacturing standards.

Q: Are there any frequency or gain differences between these devices?

A: Both devices operate at 50 MHz transition frequency. DC current gain specifications are not provided for the CENW92, but the MPSA92 PBFREE specifies a minimum hFE of 25 at 30 mA collector current and 10 V collector-emitter voltage.

Q: What is the operating temperature range for the MPSA92 PBFREE?

A: The MPSA92 PBFREE operates from -65°C to 150°C junction temperature, supporting a wider temperature range than typical industrial applications.