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

NXP Semiconductors MPSA92,412

Name: MPSA92,412
Brand: NXP Semiconductors
SKU: MPSA92,412
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPSA92,412

Manufacturer:: NXP Semiconductors

Category:: Single Bipolar Transistors

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

Datasheet:: MPSA92,412.pdf

Description:: TRANS PNP 300V 0.1A TO-92-3

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Product details

Overview

MPSA92,412 from NXP Semiconductors is a PNP high-voltage bipolar junction transistor in TO-92 (SOT54) package, rated for −300 V V_CEO and −300 V V_CBO, with DC current gain (h_FE) of 25–40 at −1 to −30 mA collector current, used in high-voltage switching circuits such as CRT flyback drivers and relay interface stages.

For engineers reviewing the MPSA92,412 datasheet, MPSA92,412 pinout, MPSA92,412 application, or MPSA92,412 equivalent, key selection criteria include its −300 V breakdown rating, −100 mA DC collector current limit, TO-92 mechanical compatibility, and complementary pairing with MPSA42 for push-pull high-voltage stage design.

Technical Context

The MPSA92,412 operates as a PNP BJT with base-controlled current amplification and voltage blocking capability. Its −300 V V_CEO and −300 V V_CBO ratings enable use in off-line switch-mode power supply snubbers and horizontal deflection output stages where high reverse voltage tolerance is mandatory.

It exhibits h_FE = 25–40 across −1 mA to −30 mA I_C, V_CE = −10 V bias, and V_CE(sat) ≤ −500 mV at −20 mA I_C/−2 mA I_B, supporting reliable saturation switching in low-duty-cycle high-voltage loads.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−300 V - supports direct connection to 230 VAC rectified rails with margin
I_C (DC)	−100 mA - suitable for driving small relays or gate resistors in HV MOSFET stages
h_FE	25–40 @ −1 to −30 mA - enables predictable base drive sizing for linear or switching operation
V_CE(sat)	≤ −500 mV @ −20 mA/−2 mA - ensures low conduction loss in saturated switching mode
P_tot	625 mW @ T_amb ≤ 25 °C - requires heatsinking or derating above 70 °C ambient
f_T	50 MHz - sufficient for audio-frequency amplification and <100 kHz switching control
R_{th j-a}	200 K/W - limits usable power dissipation to ~300 mW at 75 °C ambient

Pinout & Package

Package: TO-92 (SOT54), plastic single-ended leaded through-hole package with 3 leads, 2.54 mm lead pitch, 14.5 mm body length.

Pin/Terminal	Circuit Role	Design Meaning
1	Collector	High-voltage output node; connected to load return path in PNP common-emitter configuration
2	Base	Current-controlled input; negative-going signal turns device ON (sinks current from emitter)
3	Emitter	High-side reference node; tied to positive rail in high-side switch applications

Key Features

Feature	Design Value
High-voltage blocking	−300 V V_CEO enables direct use in 230 VAC-derived supplies without external voltage division
Complementary pairing	Matched performance with NPN MPSA42 for balanced high-voltage push-pull amplifier stages
Low leakage	ICBO ≤ −250 nA @ −200 V VCB ensures stable cutoff in high-impedance bias networks
TO-92 standardization	SOT54 footprint allows drop-in replacement in legacy designs using PN2907, BC639, or similar PNP transistors

Applications

Switch-Mode Power Supply Snubber	CRT Horizontal Deflection Output
Use Scenario: Absorbs voltage spikes across primary winding during MOSFET turn-off in offline flyback converters. IC Role / Device Role / Timing Role: PNP BJT configured as active clamp switch, triggered by auxiliary winding feedback. Use Value: −300 V rating prevents avalanche failure under 400 V DC bus transients; 625 mW dissipation handles short-duration energy pulses.	Use Scenario: Drives horizontal output transformer in analog television and monitor deflection circuits. IC Role / Device Role / Timing Role: High-voltage PNP switch in totem-pole output stage, synchronized to line frequency timing. Use Value: f_T = 50 MHz supports clean edge transition at 15.625 kHz; V_CE(sat) ≤ −500 mV minimizes heating during retrace interval.
Industrial Relay Interface	High-Voltage Signal Level Shifting
Use Scenario: Isolates microcontroller GPIO from 120/230 VAC-controlled relay coils via optocoupler-driven base. IC Role / Device Role / Timing Role: High-voltage PNP driver stage providing galvanically isolated coil energization. Use Value: −300 V V_CBO withstands back-EMF from inductive relay loads; h_FE ≥ 25 ensures reliable turn-on with limited base current.	Use Scenario: Translates logic-level signals to ±200 V domains in test equipment front-ends or HV sensor interfaces. IC Role / Device Role / Timing Role: Emitter-follower level shifter with grounded emitter, delivering inverted high-voltage output. Use Value: Low C_c = 6 pF preserves signal integrity up to 10 MHz; V_EBO = −5 V defines safe input swing range.

Switch-Mode Power Supply Snubber

CRT Horizontal Deflection Output

Use Scenario: Absorbs voltage spikes across primary winding during MOSFET turn-off in offline flyback converters.

IC Role / Device Role / Timing Role: PNP BJT configured as active clamp switch, triggered by auxiliary winding feedback.

Use Value: −300 V rating prevents avalanche failure under 400 V DC bus transients; 625 mW dissipation handles short-duration energy pulses.

Use Scenario: Drives horizontal output transformer in analog television and monitor deflection circuits.

IC Role / Device Role / Timing Role: High-voltage PNP switch in totem-pole output stage, synchronized to line frequency timing.

Use Value: f_T = 50 MHz supports clean edge transition at 15.625 kHz; V_CE(sat) ≤ −500 mV minimizes heating during retrace interval.

Industrial Relay Interface

High-Voltage Signal Level Shifting

Use Scenario: Isolates microcontroller GPIO from 120/230 VAC-controlled relay coils via optocoupler-driven base.

IC Role / Device Role / Timing Role: High-voltage PNP driver stage providing galvanically isolated coil energization.

Use Value: −300 V V_CBO withstands back-EMF from inductive relay loads; h_FE ≥ 25 ensures reliable turn-on with limited base current.

Use Scenario: Translates logic-level signals to ±200 V domains in test equipment front-ends or HV sensor interfaces.

IC Role / Device Role / Timing Role: Emitter-follower level shifter with grounded emitter, delivering inverted high-voltage output.

Use Value: Low C_c = 6 pF preserves signal integrity up to 10 MHz; V_EBO = −5 V defines safe input swing range.

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
MPSA42	NPN complement; +300 V V_CEO, same package and gain profile	Used in complementary push-pull configurations, not direct functional replacement	Select when designing symmetric high-voltage amplifier stages requiring matched PNP/NPN pairs
PN2907A	−60 V V_CEO, −600 mA I_C, TO-92, lower voltage rating but higher current	Suitable only for sub-100 V systems; cannot replace MPSA92,412 in 230 VAC-derived circuits	Choose only for low-voltage, high-current switching where −300 V rating is unnecessary

Compared with MPSA92,412, MPSA42 serves as a functionally paired NPN device enabling balanced stage design, while PN2907A offers higher current but insufficient voltage headroom-making it unsuitable for mains-referenced applications where MPSA92,412's −300 V rating is essential.

Availability

MPSA92,412 is available at Aetrix Electronics and suitable for switch-mode power supply snubbers, CRT deflection circuits, and industrial relay interfaces requiring stable component supply across long-lifecycle embedded and display electronics programs.

Supply support for MPSA92,412 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

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and consumer applications.

The MPSA92,412 belongs to NXP's discrete bipolar transistor product line, designed specifically for high-voltage analog and switching applications in legacy and cost-sensitive power electronics where TO-92 compatibility and proven reliability are critical.

FAQ

What is the maximum collector-emitter voltage rating for MPSA92,412?

The MPSA92,412 has a maximum collector-emitter voltage (V_CEO) rating of −300 V under open-base conditions. This rating is confirmed in the Absolute Maximum Ratings table of the NXP datasheet and defines the upper limit for safe DC blocking in high-voltage switching applications. Exceeding this value risks permanent breakdown. The MPSA92,412 must be operated within this limit even with transient spikes unless externally clamped.

Is MPSA92,412 pin-compatible with other TO-92 PNP transistors like PN2907?

MPSA92,412 uses standard TO-92 (SOT54) pinout: Pin 1 = Collector, Pin 2 = Base, Pin 3 = Emitter. While PN2907 shares the same physical package and pin assignment, its −60 V V_CEO rating makes it electrically incompatible in −300 V applications. Mechanical compatibility does not imply functional interchangeability-the MPSA92,412 must be verified against circuit voltage requirements before substitution.

What is the typical DC current gain (h_FE) of MPSA92,412 at 10 mA collector current?

At V_CE = −10 V and I_C = −10 mA, the MPSA92,412 exhibits a typical DC current gain (h_FE) of 40, per the Characteristics table in the NXP datasheet. Minimum guaranteed h_FE is 25 under those same conditions. This gain value directly determines required base drive current-for example, −250 µA base current yields −10 mA collector current at minimum gain.

Can MPSA92,412 be used as a direct replacement for MPSA92 without suffix?

Yes-MPSA92,412 is the full orderable part number assigned by NXP for the MPSA92 device. The ",412" suffix denotes packaging and reel configuration (e.g., tape-and-reel variant), not a functional revision. Electrical specifications, pinout, and thermal characteristics are identical to those published for MPSA92 in the same datasheet. Designers may use MPSA92,412 interchangeably with legacy MPSA92 references in schematics and BOMs.

Does MPSA92,412 have an NXP-qualified automotive grade version?

No-MPSA92,412 is specified for industrial and general-purpose applications only, with operating ambient temperature range of −65 °C to +150 °C. It is not qualified to AEC-Q101 or any automotive stress test standard. NXP does not list an automotive-grade variant of the MPSA92,412 in its official documentation or product selector tools. For automotive use, designers must perform full qualification testing or select an explicitly AEC-Q101-certified alternative.

MPSA92,412 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: -

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

Packaging:: Bulk

Product Status:: Obsolete

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 100 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:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92-3

MPSA92,412 FAQ

1.How can I place an order for MPSA92,412 through Aetrix?

Please submit a Request for Quotation (RFQ) for MPSA92,412 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 MPSA92,412 reliable?

The price and inventory of MPSA92,412 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPSA92,412 is usually 5 days.

3.What payment methods are accepted for MPSA92,412?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPSA92,412 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPSA92,412?

MPSA92,412 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPSA92,412 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 MPSA92,412?

For technical support, including MPSA92,412 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPSA92,412 requirements.

6.How does Aetrix verify that MPSA92,412 is sourced from the original manufacturer or authorized distributors?

All MPSA92,412 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 MPSA92,412 meets industry standards.

7.What is the process for return or replacement of MPSA92,412?

All MPSA92,412 units undergo pre-shipment inspection (PSI). If there is an issue with MPSA92,412, 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 MPSA92,412 part is unused and in its original packaging.

Return procedure for MPSA92,412:

1.Submit a request within 90 days.

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

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