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

onsemi MPSW92

Name: MPSW92
Brand: onsemi
SKU: MPSW92
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPSW92

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-226-3, TO-92-3 Long Body

Datasheet:: MPSW92.pdf

Description:: TRANS PNP 300V 0.5A TO92

Quantity:: RFQ Add To RFQ list

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Inventory:9,220

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Product details

Overview

MPSW92 from onsemi is a PNP silicon high-voltage transistor rated for −300 V_CEO, −500 mA continuous collector current, and 1.0 W dissipation at T_A = 25°C, designed for high-voltage switching in flyback converters, CRT deflection circuits, and industrial relay drivers.

For engineers reviewing the MPSW92 datasheet, pinout, applications, or equivalent options, key selection criteria include its verified −300 V breakdown rating, TO-92 package thermal resistance (R_JA = 125 °C/W), DC current gain (h_FE ≥ 25 at −1.0 mA), saturation voltage (V_CE(sat) ≤ −0.5 V), and 50 MHz f_T bandwidth capability.

Technical Context

The MPSW92 operates as a medium-power PNP bipolar junction transistor with fixed emitter-base and collector-base junction structures optimized for high-voltage blocking and moderate-speed switching. Its −300 V_CBO/V_CEO ratings and −5.0 V_EBO define safe operating limits under reverse-biased conditions.

Thermal design relies on its R_JC = 50 °C/W and R_JA = 125 °C/W values, enabling operation up to +150°C junction temperature when mounted on standard PCBs without heatsinking. Small-signal behavior is characterized by f_T = 50 MHz and C_cb = 6.0 pF at −20 V_CB.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−300 Vdc - supports primary-side switching in offline flyback topologies up to 230 VAC mains with safety margin
I_C	−500 mAdc - delivers sufficient drive current for medium-power solenoids and relay coils
P_D @ T_A=25°C	1.0 W - enables compact TO-92 mounting without forced air or heatsink in low-duty-cycle applications
h_FE	25–40 - provides predictable base drive requirements for linear and saturated switching modes
V_CE(sat)	≤ −0.5 Vdc @ I_C=−20 mA, I_B=−2.0 mA - minimizes conduction loss in high-side switch configurations
f_T	50 MHz - supports switching frequencies up to ~5–10 MHz in resonant or pulse-width modulated circuits
R_JA	125 °C/W - defines maximum ambient temperature rise per watt dissipated on standard FR-4 board

Pinout & Package

Package: TO-92 (Case 29-10), 1 W power rating, straight or bent lead options, Pb-free compliant (MPSW92RLREG uses tape-and-reel packaging).

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current sink terminal; connected to common rail or ground in high-side switch configuration
2	Base	Control input requiring negative bias relative to emitter to turn on PNP device
3	Collector	High-voltage output node; handles −300 V blocking and −500 mA load current

Key Features

Feature	Design Value
High-voltage blocking	−300 V_CEO and −300 V_CBO enable direct replacement of legacy 2N6027/2N6028 in HV snubber and trigger circuits
Thermal robustness	−55°C to +150°C operating range allows deployment in industrial environments without derating below −40°C
Low saturation voltage	V_CE(sat) ≤ −0.5 V reduces power loss and self-heating during sustained conduction in relay drivers
Stable gain across temperature	h_FE maintains ≥25 from −55°C to +125°C (per Fig. 4), easing bias network design over wide ambient ranges

Applications

Switch-Mode Power Supply (SMPS) Flyback Primary Switch	CRT Horizontal Deflection Output Stage
Use Scenario: Used as main switching transistor in low-cost, isolated flyback converters for AC/DC adapters and auxiliary supplies. IC Role / Device Role / Timing Role: High-voltage PNP switch controlling energy transfer from primary to secondary winding during off-time. Use Value: −300 V rating accommodates reflected voltage spikes from transformer leakage inductance without clamping circuitry.	Use Scenario: Drives horizontal deflection yoke in monochrome CRT displays and oscilloscopes. IC Role / Device Role / Timing Role: Fast-switching PNP transistor generating sawtooth current waveform synchronized to line frequency. Use Value: 50 MHz f_T and low C_cb (6.0 pF) support clean edge transitions and minimal phase lag in high-frequency sweep circuits.
Industrial Relay and Solenoid Driver	High-Voltage Pulse Generator (e.g., Ignition, Flash)
Use Scenario: Interfaces microcontroller GPIO to 24–48 VDC industrial relays and pneumatic solenoids. IC Role / Device Role / Timing Role: Medium-current, high-voltage interface transistor providing galvanic isolation and current amplification. Use Value: −500 mA I_C and −0.5 V V_CE(sat) ensure reliable coil actuation with <100 mW dissipation at full load.	Use Scenario: Generates short-duration, high-voltage pulses for xenon flash tubes or piezoelectric igniters. IC Role / Device Role / Timing Role: Discrete high-voltage switch discharging capacitor into load via controlled avalanche or hard-switched turn-off. Use Value: −300 V V_CEO withstands capacitor recharge voltages up to 280 V with margin for transient overshoot.

Switch-Mode Power Supply (SMPS) Flyback Primary Switch

CRT Horizontal Deflection Output Stage

Use Scenario: Used as main switching transistor in low-cost, isolated flyback converters for AC/DC adapters and auxiliary supplies.

IC Role / Device Role / Timing Role: High-voltage PNP switch controlling energy transfer from primary to secondary winding during off-time.

Use Value: −300 V rating accommodates reflected voltage spikes from transformer leakage inductance without clamping circuitry.

Use Scenario: Drives horizontal deflection yoke in monochrome CRT displays and oscilloscopes.

IC Role / Device Role / Timing Role: Fast-switching PNP transistor generating sawtooth current waveform synchronized to line frequency.

Use Value: 50 MHz f_T and low C_cb (6.0 pF) support clean edge transitions and minimal phase lag in high-frequency sweep circuits.

Industrial Relay and Solenoid Driver

High-Voltage Pulse Generator (e.g., Ignition, Flash)

Use Scenario: Interfaces microcontroller GPIO to 24–48 VDC industrial relays and pneumatic solenoids.

IC Role / Device Role / Timing Role: Medium-current, high-voltage interface transistor providing galvanic isolation and current amplification.

Use Value: −500 mA I_C and −0.5 V V_CE(sat) ensure reliable coil actuation with <100 mW dissipation at full load.

Use Scenario: Generates short-duration, high-voltage pulses for xenon flash tubes or piezoelectric igniters.

IC Role / Device Role / Timing Role: Discrete high-voltage switch discharging capacitor into load via controlled avalanche or hard-switched turn-off.

Use Value: −300 V V_CEO withstands capacitor recharge voltages up to 280 V with margin for transient overshoot.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
2N6027	Lower V_CEO (−200 V), lower f_T (~10 MHz), TO-92 package same pinout (E-B-C)	Limited to ≤170 VAC input designs; unsuitable for fast sweep or >20 kHz SMPS	Select only where voltage stress remains <180 V and switching speed is non-critical
MPSW45A	Same V_CEO (−300 V), higher I_C (−1.0 A), TO-92 but different pinout (C-B-E)	Requires PCB layout revision due to reversed collector/emitter pins; better for higher-current loads	Choose when load current exceeds −500 mA and board redesign is acceptable

Compared with 2N6027 and MPSW45A, the MPSW92 offers optimal balance of voltage rating, switching speed, and pin compatibility for cost-sensitive, medium-power HV switching-without requiring layout changes or sacrificing bandwidth.

Availability

MPSW92 is available at Aetrix Electronics and suitable for switch-mode power supply flyback stages, CRT deflection circuits, and industrial relay drivers requiring stable component supply and long-term manufacturability.

Supply support for MPSW92 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensors, and logic devices for automotive, industrial, and consumer markets.

The MPSW92 belongs to onsemi's legacy high-voltage discrete transistor family, engineered specifically for reliability in high-stress switching applications where voltage margin, thermal stability, and consistent gain are critical.

FAQ

What is the maximum collector-emitter voltage rating for the MPSW92?

The MPSW92 has a guaranteed minimum V_(BR)CEO of −300 Vdc at I_C = −1.0 mAdc and I_B = 0. This rating is validated per onsemi's datasheet Rev. 5 and applies to the MPSW92 under all specified operating conditions. The MPSW92 must not be operated beyond this voltage to ensure long-term reliability.

Is the MPSW92 pin-compatible with the 2N6027?

Yes-the MPSW92 uses the same TO-92 package with identical E-B-C pinout (Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector) as the 2N6027. However, the MPSW92 offers superior −300 V rating and 50 MHz f_T versus the 2N6027's −200 V and ~10 MHz, making it a functional upgrade without PCB modification.

What is the typical DC current gain (h_FE) of the MPSW92 at −10 mA collector current?

Per the onsemi MPSW92 datasheet, h_FE is specified as min 40 at I_C = −10 mAdc, V_CE = −10 Vdc, and T_A = 25°C. This value is confirmed in the "ELECTRICAL CHARACTERISTICS" table on page 2. The MPSW92 maintains usable gain down to −55°C and up to +125°C, as shown in Figure 4.

Can the MPSW92 be used in surface-mount designs?

No-the MPSW92 is exclusively offered in through-hole TO-92 (Case 29-10) packaging, as confirmed in the "ORDERING INFORMATION" section. There is no SMT variant (e.g., SOT-23 or SC-70) listed for the MPSW92. For surface-mount alternatives, consider evaluating onsemi's MMBT series or other qualified PNP SMT transistors separately from the MPSW92.

What is the thermal resistance from junction to ambient (R_JA) for the MPSW92 in free-air conditions?

The MPSW92 has a maximum R_JA of 125 °C/W when mounted on a standard FR-4 PCB with no heatsink, per the "THERMAL CHARACTERISTICS" table. This value assumes natural convection and defines the worst-case temperature rise per watt dissipated. Derating begins above 25°C ambient at 8.0 mW/°C.

MPSW92 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-226-3, TO-92-3 Long Body

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:: 1 W

Frequency - Transition:: 50MHz

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92 (TO-226)

MPSW92 FAQ

1.How can I place an order for MPSW92 through Aetrix?

Please submit a Request for Quotation (RFQ) for MPSW92 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 MPSW92 reliable?

The price and inventory of MPSW92 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPSW92 is usually 5 days.

3.What payment methods are accepted for MPSW92?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPSW92 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPSW92?

MPSW92 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPSW92 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 MPSW92?

For technical support, including MPSW92 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPSW92 requirements.

6.How does Aetrix verify that MPSW92 is sourced from the original manufacturer or authorized distributors?

All MPSW92 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 MPSW92 meets industry standards.

7.What is the process for return or replacement of MPSW92?

All MPSW92 units undergo pre-shipment inspection (PSI). If there is an issue with MPSW92, 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 MPSW92 part is unused and in its original packaging.

Return procedure for MPSW92:

1.Submit a request within 90 days.

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

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