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

Nexperia USA Inc. PXTA92,115

Name: PXTA92,115
Brand: Nexperia USA Inc.
SKU: PXTA92,115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PXTA92,115

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: PXTA92,115.pdf

Description:: TRANS PNP 300V 0.1A SOT-89

Quantity:: RFQ Add To RFQ list

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Inventory:20,061

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Product details

Overview

PXTA92 from Nexperia is a PNP high-voltage bipolar junction transistor in SOT89 package, rated for −300 V V_CEO, −100 mA continuous collector current, and 1.3 W power dissipation at T_amb ≤ 25 °C; used as a switching element in electronic ballasts, LED chain drivers, and SMPS high-side configurations.

For engineers reviewing the PXTA92 datasheet, PXTA92 pinout, PXTA92 application, or PXTA92 equivalent, key selection criteria include verified −300 V breakdown rating, SOT89 thermal performance (R_th(j-sp) = 16 K/W), DC current gain (h_FE = 40 @ −10 V/−10 mA), saturation voltage (V_CEsat ≤ −500 mV), and compatibility with FR4 PCB mounting per IEC 60134 limiting values.

Technical Context

The PXTA92 operates as a medium-power PNP switch with open-base collector-emitter breakdown of −300 V and peak collector current capability of −200 mA. Its h_FE ranges from 25 to 40 across −1 mA to −30 mA collector currents at −10 V V_CE, supporting stable linear and saturated-region operation in high-voltage DC-DC stages.

Thermal design relies on its low R_th(j-sp) = 16 K/W to solder point and defined FR4 mounting pad (6 cm² copper), enabling reliable power handling without forced cooling. Collector capacitance is 6 pF at −20 V V_CB, and transition frequency f_T reaches 50 MHz at −20 V/−10 mA, confirming suitability for kHz–low-MHz switching.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−300 V: Maximum safe collector-emitter voltage with base open; enables use in 277 V AC-fed ballasts and 400 V DC bus SMPS.
I_C	−100 mA continuous: Rated collector current under ambient ≤25 °C; supports LED string current regulation up to 100 mA.
h_FE	40 @ −10 V/−10 mA: Confirmed DC current gain ensures predictable base drive sizing for switching control circuits.
V_CEsat	≤ −500 mV @ −20 mA/−2 mA: Low saturation voltage minimizes conduction loss in high-side switch topologies.
R_th(j-sp)	16 K/W: Junction-to-solder-point thermal resistance confirms effective heat transfer to PCB copper pad.
C_c	6 pF @ −20 V V_CB: Collector capacitance impacts switching speed and EMI in flyback and resonant converters.
f_T	50 MHz @ −20 V/−10 mA: Transition frequency validates usable bandwidth for <1 MHz PWM control loops.

Pinout & Package

Package: SOT89 (SC-62), plastic surface-mounted, 3-lead, 1.5 mm pitch, 4.5 mm × 2.5 mm × 1.5 mm body; designed for single-sided FR4 PCB with 6 cm² collector pad.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current exit terminal; connected to high-side rail or load return in common-emitter switch configuration.
2	Collector	Main current input terminal; thermally tied to large PCB copper area for power dissipation management.
3	Base	Control input; requires negative bias relative to emitter to turn on; drives with −2 mA yields −20 mA collector current.

Key Features

Feature	Design Value
High-voltage blocking	−300 V V_CEO rating enables direct interface with 277 V AC rectified lines without external snubbers.
Medium-power SMD packaging	SOT89 footprint balances thermal performance (1.3 W) and board space efficiency for compact lighting modules.
Low V_CEsat	≤ −500 mV at −20 mA reduces conduction loss by >30% vs. comparable −100 V transistors in same package.
Controlled h_FE range	25–40 across operating points simplifies base resistor selection for consistent turn-on timing in SMPS feedback paths.

Applications

Electronic Ballast

LED Chain Driver

Use Scenario: High-frequency AC lamp ignition and current regulation in fluorescent fixtures.

IC Role / Device Role / Timing Role: PNP high-side switch controlling resonant tank current during preheat and run phases.

Use Value: −300 V rating withstands 2× peak line voltage (277 V AC → ~390 V DC); 1.3 W dissipation sustains 25 kHz switching without heatsink.

Use Scenario: Constant-current switching for multi-LED series strings in signage and architectural lighting.

IC Role / Device Role / Timing Role: Linear or PWM-controlled current sink in high-side configuration with current-sense feedback.

Use Value: V_CEsat ≤ −500 mV limits power loss to <10 mW at 20 mA, preserving efficiency in thermally constrained enclosures.

HID Front Lighting

Hook Switch

Use Scenario: Ignition pulse generation and arc stabilization in automotive and streetlight HID lamps.

IC Role / Device Role / Timing Role: Fast-switching PNP transistor driving step-up transformer primary in electronic igniter circuit.

Use Value: 50 MHz f_T supports clean 1–2 µs rise/fall times for precise ignition pulse shaping.

Use Scenario: Line-powered ring detection and off-hook switching in legacy telephone interfaces.

IC Role / Device Role / Timing Role: High-voltage switch isolating ringing signal (90 V RMS) from low-voltage logic side.

Use Value: −300 V V_CBO exceeds telecom line surge requirements (IEC 61000-4-5 Level 4), ensuring long-term reliability.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MJD2955T4G	−70 V V_CEO, −10 A I_C, TO-220 package; higher current but lower voltage rating.	Not suitable for 277 V AC ballasts; limited to ≤100 V DC systems like industrial controls.	Select only when high current (>500 mA) and low-voltage (<80 V) operation dominate over voltage headroom.
PN2907A	−60 V V_CEO, −600 mA I_C, TO-92; significantly lower voltage and power capability.	Restricted to low-voltage signal switching; cannot replace PXTA92 in any listed high-voltage application.	Use only for prototyping or non-critical sub-50 V logic-level switching where SOT89 mounting is unnecessary.

Compared with MJD2955T4G and PN2907A, the PXTA92 uniquely delivers −300 V blocking with SOT89 thermal efficiency-enabling compact, high-reliability designs in 277 V AC-connected lighting and telecom systems where neither alternative meets voltage or form-factor requirements.

Availability

PXTA92 is available at Aetrix Electronics and suitable for electronic ballasts, LED chain drivers, and Switch Mode Power Supplies requiring stable component supply and long-lifecycle support.

Supply support for PXTA92 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, headquartered in Nijmegen, Netherlands.

The PXTA92 belongs to Nexperia's high-voltage bipolar transistor product line, engineered specifically for energy-efficient lighting, telecom interface, and industrial power conversion where robustness at ≥250 V is essential.

FAQ

Is PXTA92 automotive-qualified?

No, PXTA92 is explicitly marked as non-automotive qualified per its 2024 revision history. It lacks AEC-Q101 qualification and is not tested to automotive temperature or reliability standards. For automotive applications, Nexperia offers separate −Q qualified variants; this part is intended for industrial, commercial, and lighting equipment only.

What is the maximum allowable PCB copper area for thermal performance?

The datasheet specifies a 6 cm² single-sided, tin-plated copper pad for the collector lead to achieve the rated 1.3 W power dissipation and R_th(j-a) = 96 K/W. Reducing pad area below this degrades thermal performance and may cause premature junction overheating above 150 °C.

Can PXTA92 be used in linear amplifier mode?

Yes, but with strict derating: its h_FE varies from 25 to 40 across −1 mA to −30 mA, and V_CEsat rises sharply above −20 mA. Linear operation is viable only at low quiescent currents (<5 mA) and low V_CE (<−5 V) to avoid exceeding P_tot and thermal runaway.

What is the meaning of the marking code '%2D' on the device?

The marking '%2D' indicates PXTA92 with '%' as a placeholder for the manufacturing site code (e.g., 'A' for Nijmegen, 'B' for Bangkok). The '2D' suffix is a date code representing week 2 of year 2024; full traceability is maintained via Nexperia's lot numbering system.

PXTA92,115 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: TO-243AA

Packaging:: Tape & Reel (TR)

Product Status:: Active

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:: 1.3 W

Frequency - Transition:: 50MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-89

PXTA92,115 FAQ

1.How can I place an order for PXTA92,115 through Aetrix?

Please submit a Request for Quotation (RFQ) for PXTA92,115 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 PXTA92,115 reliable?

The price and inventory of PXTA92,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PXTA92,115 is usually 5 days.

3.What payment methods are accepted for PXTA92,115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PXTA92,115 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PXTA92,115?

PXTA92,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PXTA92,115 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 PXTA92,115?

For technical support, including PXTA92,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PXTA92,115 requirements.

6.How does Aetrix verify that PXTA92,115 is sourced from the original manufacturer or authorized distributors?

All PXTA92,115 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 PXTA92,115 meets industry standards.

7.What is the process for return or replacement of PXTA92,115?

All PXTA92,115 units undergo pre-shipment inspection (PSI). If there is an issue with PXTA92,115, 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 PXTA92,115 part is unused and in its original packaging.

Return procedure for PXTA92,115:

1.Submit a request within 90 days.

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

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