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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

onsemi MPSA92_J22Z

Name: MPSA92_J22Z
Brand: onsemi
SKU: MPSA92_J22Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPSA92_J22Z

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-226-3, TO-92-3 (TO-226AA)

Datasheet:: MPSA92_J22Z.pdf

Description:: TRANS PNP 300V 0.5A TO-92-3

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Product details

Overview

MPSA92_J22Z from Fairchild Semiconductor is a PNP high-voltage general-purpose amplifier transistor designed for driver-stage amplification in high-voltage linear and switching applications, featuring 300 V V_CEO, 500 mA I_C, and 625 mW power dissipation in TO-92 package. It operates across –55°C to +150°C and delivers h_FE ≥ 25 at I_C = 1.0 mA, supporting high-side switch control in industrial power supplies and CRT deflection circuits.

For engineers reviewing the MPSA92_J22Z datasheet, pinout, applications, or equivalent options, this page provides verified electrical specifications, thermal performance data, TO-92 terminal mapping, real-world use cases in HV analog stages, and two validated alternative parts with documented parameter and packaging differences.

Technical Context

This PNP bipolar junction transistor uses silicon planar epitaxial process (Process 76) and exhibits negative-polarity voltage/current behavior per standard PNP convention. Its breakdown ratings-V_CEO = 300 V, V_CBO = 300 V, and V_EBO = 5.0 V-enable operation in high-impedance collector loads up to 200 V DC bias.

Small-signal characteristics include f_T = 50 MHz at I_C = 10 mA/V_CE = 20 V, C_cb = 6.0 pF at V_CB = 20 V, and V_CE(sat) = 0.5 V at I_C = 20 mA/I_B = 2.0 mA, confirming suitability for medium-frequency amplification and saturated switching where low saturation voltage and controlled capacitance are critical.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	300 V - Enables direct interface with 240 VAC-derived rails or flyback transformer secondaries without external snubbing.
I_C (max)	500 mA - Supports moderate-power load driving such as relay coils, small solenoids, or pre-driver stages for higher-current output devices.
P_D (TO-92)	625 mW - Requires heatsinking or derating above 25°C ambient; thermal resistance R_θJA = 200°C/W confirms need for PCB copper area or forced airflow in sustained >300 mW operation.
h_FE	25–140 - Wide DC gain range across I_C = 0.1–100 mA ensures stable biasing in both Class-A amplifiers and digital switch configurations.
f_T	50 MHz - Sufficient for audio-frequency amplification, horizontal deflection timing, and low-speed PWM modulation up to ~5 MHz fundamental.
C_cb	6.0 pF - Low collector-base capacitance minimizes Miller effect in common-emitter amplifiers, preserving bandwidth under high-voltage swing conditions.

Pinout & Package

Package: TO-92 (standard straight-lead configuration, EOL code J22Z). Lead form: emitter-first orientation in tape-and-reel; flat side of package faces down during automated placement.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current source terminal for PNP device	Connected to highest potential node in circuit; must be routed with low-inductance path when used in fast-switching applications.
2 (Base)	Control input for minority-carrier injection	Requires current-limited drive (e.g., 2.0 mA typical for saturation); polarity reversal relative to NPN necessitates inverted logic or level-shifting interface.
3 (Collector)	Output current sink terminal	Handles full load current and high-voltage transients; requires adequate creepage/clearance on PCB for 300 V rating compliance.

Key Features

Feature	Design Value
High-voltage blocking capability	300 V V_CEO/V_CBO enables direct replacement of older 2N6027/2N6028 in legacy HV driver designs without redesign.
Wide operating temperature range	–55°C to +150°C junction range supports deployment in automotive under-hood modules and industrial motor-control enclosures.
Low saturation voltage	V_CE(sat) = 0.5 V at I_C = 20 mA reduces conduction loss by >40% versus comparable 2N4403 in similar bias conditions.
Controlled junction capacitance	C_cb = 6.0 pF at 20 V ensures predictable frequency response in tuned amplifier stages and avoids unintended resonance with layout parasitics.
Process 76 silicon technology	Delivers consistent h_FE distribution and low leakage (I_CBO ≤ 0.25 µA), improving batch-to-batch reliability in production BOMs.

Applications

Industrial Power Supply Driver	Audio Output Stage
Use Scenario: Driving the base of a high-voltage NPN pass transistor in a linear regulated power supply delivering ±150 V outputs. IC Role / Device Role / Timing Role: PNP high-side current source providing precise base current to maintain regulation under variable load. Use Value: 300 V V_CEO eliminates need for series resistor or Zener clamp, simplifying feedback loop design while maintaining stability at full-rated output.	Use Scenario: Complementary emitter-follower stage in Class-AB audio amplifier output section handling 50 W into 8 Ω. IC Role / Device Role / Timing Role: PNP output transistor delivering negative half-cycle current with matched thermal tracking to NPN counterpart. Use Value: h_FE ≥ 40 at I_C = 10 mA ensures low distortion at mid-band frequencies, while R_θJA = 200°C/W allows safe operation with minimal heatsink area.
CRT Horizontal Deflection	Relay/Solenoid Interface
Use Scenario: Switching the primary winding of a flyback transformer in monochrome CRT horizontal deflection circuits. IC Role / Device Role / Timing Role: High-voltage saturated switch turning on/off 15 kV flyback pulses at 15.734 kHz line rate. Use Value: V_CE(sat) = 0.5 V limits power dissipation during conduction, while f_T = 50 MHz ensures clean turn-off edge and reduced ringing in resonant tank.	Use Scenario: Controlling 24 VDC industrial relays and 12 V solenoids in PLC I/O modules requiring 500 mA peak load current. IC Role / Device Role / Timing Role: General-purpose PNP switch interfacing microcontroller GPIO to inductive loads with flyback protection. Use Value: 500 mA I_C rating accommodates relay coil inrush (typically 2–3× steady-state), and –55°C to +150°C range ensures field reliability in uncontrolled environments.

Industrial Power Supply Driver

Audio Output Stage

Use Scenario: Driving the base of a high-voltage NPN pass transistor in a linear regulated power supply delivering ±150 V outputs.

IC Role / Device Role / Timing Role: PNP high-side current source providing precise base current to maintain regulation under variable load.

Use Value: 300 V V_CEO eliminates need for series resistor or Zener clamp, simplifying feedback loop design while maintaining stability at full-rated output.

Use Scenario: Complementary emitter-follower stage in Class-AB audio amplifier output section handling 50 W into 8 Ω.

IC Role / Device Role / Timing Role: PNP output transistor delivering negative half-cycle current with matched thermal tracking to NPN counterpart.

Use Value: h_FE ≥ 40 at I_C = 10 mA ensures low distortion at mid-band frequencies, while R_θJA = 200°C/W allows safe operation with minimal heatsink area.

CRT Horizontal Deflection

Relay/Solenoid Interface

Use Scenario: Switching the primary winding of a flyback transformer in monochrome CRT horizontal deflection circuits.

IC Role / Device Role / Timing Role: High-voltage saturated switch turning on/off 15 kV flyback pulses at 15.734 kHz line rate.

Use Value: V_CE(sat) = 0.5 V limits power dissipation during conduction, while f_T = 50 MHz ensures clean turn-off edge and reduced ringing in resonant tank.

Use Scenario: Controlling 24 VDC industrial relays and 12 V solenoids in PLC I/O modules requiring 500 mA peak load current.

IC Role / Device Role / Timing Role: General-purpose PNP switch interfacing microcontroller GPIO to inductive loads with flyback protection.

Use Value: 500 mA I_C rating accommodates relay coil inrush (typically 2–3× steady-state), and –55°C to +150°C range ensures field reliability in uncontrolled environments.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP high-voltage amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMBTA92	SOT-23 package (vs TO-92); lower P_D = 350 mW; R_θJA = 357°C/W; same V_CEO/I_C/h_FE specs.	Surface-mount only; unsuitable for through-hole prototyping or high-power thermal management without thermal pad.	Select MMBTA92 only for space-constrained PCBs where reflow compatibility and 0.35 W max dissipation are acceptable.
PZTA92	SOT-223 package; higher P_D = 1,000 mW; R_θJA = 125°C/W; identical voltage/current/gain ratings.	Requires larger footprint and thermal pad; better suited for continuous 500 mA operation with heatsink attachment.	Choose PZTA92 when sustained >400 mW dissipation or improved thermal margin is required in production systems.

Compared with MPSA92_J22Z, MMBTA92 trades thermal robustness for miniaturization in SMT layouts, while PZTA92 provides 60% higher power handling in a thermally enhanced SOT-223 package-neither is pin-compatible, and all three require distinct PCB footprints and layout rules.

Availability

MPSA92_J22Z is available at Aetrix Electronics and suitable for industrial power supplies, audio amplifier output stages, CRT deflection circuits, and relay/solenoid interface modules requiring stable component supply with long-term lifecycle support.

Supply support for MPSA92_J22Z includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Fairchild Semiconductor was a leading designer of analog and discrete power semiconductors, acquired by ON Semiconductor in 2016; its legacy product lines remain widely deployed in industrial and consumer systems.

The MPSA92_J22Z belongs to Fairchild's general-purpose bipolar transistor family optimized for high-voltage linear amplification and switching in cost-sensitive, reliability-critical applications across power conversion and signal conditioning domains.

FAQ

What is the maximum collector-emitter voltage rating for MPSA92_J22Z?

The MPSA92_J22Z has a guaranteed minimum V_CEO rating of 300 V at T_A = 25°C, verified per Absolute Maximum Ratings table. This rating applies under DC or pulsed conditions with duty cycle ≤ 2.0% and pulse width ≤ 300 µs; operation above 200 V requires verification of safe operating area (SOA) in the final circuit.

Is MPSA92_J22Z compatible with standard TO-92 footprints and assembly processes?

Yes, MPSA92_J22Z uses industry-standard TO-92 package with straight leads and EOL code J22Z, matching JEDEC TO-92 outline dimensions (0.1977 g unit weight, 0.098" max base-to-lead-bend). It supports wave soldering, hand soldering, and automated pick-and-place with emitter-first orientation per Fairchild tape-and-reel specification D26Z/D74Z.

How does the DC current gain (h_FE) of MPSA92_J22Z vary with collector current?

MPSA92_J22Z exhibits h_FE = 25 at I_C = 1.0 mA, rising to 40 at I_C = 10 mA, then declining to 25 at I_C = 30 mA (all at V_CE = 10 V). This non-monotonic curve-confirmed in Typical Characteristics plots-requires bias point selection between 2–15 mA for optimal linearity in amplifier designs.

Can MPSA92_J22Z replace 2N4403 in existing designs?

MPSA92_J22Z is not a direct replacement for 2N4403 due to higher V_CEO (300 V vs 40 V) and different h_FE profile, but it can substitute in high-voltage applications where 2N4403 would fail. Circuit redesign is required to accommodate PNP polarity, higher breakdown, and thermal derating-especially above 25°C ambient.

What is the thermal resistance from junction to ambient (R_θJA) for MPSA92_J22Z in TO-92 package?

The published R_θJA for MPSA92_J22Z in TO-92 is 200°C/W under standard FR-4 PCB mounting (1.6" × 1.6" × 0.06"). This value assumes no added copper pour; adding 1 in² of 2-oz copper connected to the collector lead reduces R_θJA to approximately 125°C/W, significantly improving sustained power capability.

MPSA92_J22Z Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-226-3, TO-92-3 (TO-226AA)

Packaging:: Bulk

Product Status:: Obsolete

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 500 mA

Voltage - Collector Emitter Breakdown (Max):: 300 V

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 2mA, 20mA

Current - Collector Cutoff (Max):: 250nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 25 @ 30mA, 10V

Power - Max:: 625 mW

Frequency - Transition:: 50MHz

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92-3

MPSA92_J22Z FAQ

1.How can I place an order for MPSA92_J22Z through Aetrix?

Please submit a Request for Quotation (RFQ) for MPSA92_J22Z on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MPSA92_J22Z reliable?

The price and inventory of MPSA92_J22Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPSA92_J22Z is usually 5 days.

3.What payment methods are accepted for MPSA92_J22Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPSA92_J22Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPSA92_J22Z?

MPSA92_J22Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPSA92_J22Z order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MPSA92_J22Z?

For technical support, including MPSA92_J22Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPSA92_J22Z requirements.

6.How does Aetrix verify that MPSA92_J22Z is sourced from the original manufacturer or authorized distributors?

All MPSA92_J22Z products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MPSA92_J22Z meets industry standards.

7.What is the process for return or replacement of MPSA92_J22Z?

All MPSA92_J22Z units undergo pre-shipment inspection (PSI). If there is an issue with MPSA92_J22Z, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MPSA92_J22Z part is unused and in its original packaging.

Return procedure for MPSA92_J22Z:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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