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

Nexperia USA Inc. 2PA1576S-QX

Name: 2PA1576S-QX
Brand: Nexperia USA Inc.
SKU: 2PA1576S-QX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2PA1576S-QX

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: SC-70, SOT-323

Datasheet:: 2PA1576S-QX.pdf

Description:: TRANS PNP 50V 0.15A SOT-323

Quantity:: RFQ Add To RFQ list

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Inventory:6,850

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Product details

Overview

2PA1576S-QX from Nexperia is a PNP general-purpose bipolar junction transistor in SOT323 (SC-70) package, rated for −50 V V_CEO, −150 mA I_C, and 270–560 h_FE at −1 mA collector current. It delivers low collector capacitance (2.5 pF typ.) and is AEC-Q101 qualified for automotive signal switching and amplification circuits.

For engineers reviewing the 2PA1576S-QX datasheet, 2PA1576S-QX pinout, 2PA1576S-QX application, or 2PA1576S-QX equivalent, this page provides verified electrical parameters, validated SC-70 terminal mapping, automotive-grade reliability context, and direct alternatives with documented functional trade-offs.

Technical Context

This PNP transistor operates in linear and saturation regions with V_CE(sat) ≤ −500 mV at I_C = −50 mA / I_B = −5 mA, supporting efficient low-voltage switching. Its f_T of 100 MHz enables use in audio-frequency amplification and moderate-speed digital logic interfacing.

The device exhibits low leakage: I_CBO ≤ −100 nA at 25 °C and −5 µA at 150 °C, ensuring stable biasing across temperature. Thermal resistance R_th(j-a) is 625 K/W on FR4 PCB, defining power derating above 25 °C ambient.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−50 V - Maximum safe collector-emitter voltage with base open; defines high-side switch headroom in 12 V/24 V automotive rails.
I_C	−150 mA - Continuous DC collector current limit; supports LED drivers and small-signal relay coils.
h_FE	270–560 - DC current gain at V_CE = −6 V, I_C = −1 mA; enables predictable base drive sizing for low-power switching.
C_c	2.5 pF typ. - Collector capacitance at V_CB = −12 V; minimizes high-frequency signal loading in amplifier feedback paths.
f_T	100 MHz - Transition frequency at V_CE = −12 V, I_C = −2 mA; confirms suitability for audio-band and sub-MHz digital signal conditioning.
P_tot	200 mW - Total power dissipation at T_amb ≤ 25 °C on FR4 PCB; sets thermal design boundary for continuous operation.

Pinout & Package

SOT323 (SC-70) plastic surface-mount package: 3-terminal, 1.3 mm pitch, 2.0 mm × 1.25 mm × 0.95 mm body. Designed for reflow and wave soldering per IPC-7351B footprint standards.

Pin/Terminal	Circuit Role	Design Meaning
1	Base (B)	Current-controlled input node; requires series resistor to limit I_B ≤ −200 mA peak per absolute max rating.
2	Emitter (E)	Common reference terminal for PNP configuration; connects to higher potential rail in high-side switch topology.
3	Collector (C)	Output current path; sinks load current when base is forward-biased relative to emitter.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive underhood applications including engine control modules and body electronics.
Low V_CE(sat)	≤ −500 mV at I_C = −50 mA ensures minimal conduction loss in 5 V–12 V logic-level switching.
Low C_c	2.5 pF typ. reduces Miller effect, enabling stable gain in common-emitter amplifier stages up to 10 MHz.
High h_FE range	270–560 allows consistent switching behavior across production lots without individual gain binning.

Applications

Automotive Door Module Switching

USB Port Over-Current Protection

Use Scenario: Controlling window lift motor enable signals in door control units with 12 V supply and CAN bus coordination.

IC Role / Device Role / Timing Role: PNP high-side switch driving optocoupler input or MOSFET gate to isolate microcontroller outputs.

Use Value: −50 V V_CEO withstands load-dump transients; AEC-Q101 compliance ensures 15-year field reliability.

Use Scenario: Current-limiting circuit in USB 2.0 downstream ports to disable power delivery during short-circuit events.

IC Role / Device Role / Timing Role: Fast-turn-off PNP switch in foldback current limiter topology, triggered by comparator output.

Use Value: 100 MHz f_T supports <1 µs response to over-current detection; low C_c prevents false triggering from noise.

Industrial Sensor Signal Conditioning

Consumer Audio Pre-Amplifier Stage

Use Scenario: Amplifying millivolt-level thermistor or RTD bridge outputs in programmable logic controller (PLC) analog input modules.

IC Role / Device Role / Timing Role: Common-emitter DC amplifier with emitter degeneration for stable gain and linearity.

Use Value: 270–560 h_FE enables precise gain setting via external resistors; low I_CBO maintains offset stability over −40 °C to +125 °C.

Use Scenario: First-stage gain block in portable Bluetooth speaker preamp before op-amp buffering.

IC Role / Device Role / Timing Role: Low-noise PNP emitter-follower buffer isolating high-impedance source from subsequent stage.

Use Value: 2.5 pF C_c minimizes capacitive loading on preceding DAC or filter; SOT323 footprint saves board space in compact enclosures.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP general-purpose transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
2PC4081S-Q	NPN complement with identical SOT323 package, −50 V V_CEO, and matching h_FE range; not electrically interchangeable without circuit redesign.	Requires inverted logic and low-side switching topology; unsuitable for high-side load control where 2PA1576S-QX is used.	Select only when NPN configuration is required and board layout permits topology change.
BC807-25	Same SOT323 package but lower h_FE (160–250), higher V_CE(sat) (−700 mV), and no AEC-Q101 qualification.	Limited to non-automotive consumer or industrial applications where qualification and tighter gain tolerance are not mandatory.	Choose for cost-sensitive designs outside automotive scope; verify thermal margin due to higher saturation voltage.

Compared with 2PC4081S-Q, 2PA1576S-QX enables high-side switching without level-shifting; versus BC807-25, it offers guaranteed automotive reliability and superior gain consistency-critical for closed-loop sensor interfaces and safety-related functions.

Availability

2PA1576S-QX is available at Aetrix Electronics and suitable for automotive door modules, USB power management ICs, industrial PLC analog inputs, and portable audio preamplifiers requiring stable component supply and AEC-Q101 compliance.

Supply support for 2PA1576S-QX 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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.

The 2PA1576S-QX belongs to Nexperia's AEC-Q101-qualified general-purpose transistor family, engineered for robustness in automotive signal switching and amplification where reliability, small size, and parametric consistency are critical.

FAQ

Is 2PA1576S-QX pin-compatible with BC857 or MMBT3906?

No. While all three are PNP transistors in SOT-23 packages, 2PA1576S-QX uses SOT323 (SC-70), which has smaller dimensions and different pin pitch. Physical mounting and PCB footprint are incompatible; substitution requires board redesign.

What is the maximum allowable base current for continuous operation?

The absolute maximum peak base current is −200 mA, but continuous operation must stay within I_B ≤ −5 mA for typical switching use cases. At I_C = −150 mA, h_FE minimum is 270, so I_B ≥ −556 µA ensures saturation; design with ≥2× margin for temperature drift.

Does 2PA1576S-QX support pulsed operation beyond its DC ratings?

Yes. Peak collector current is rated at −200 mA with pulse conditions (tp ≤ 300 µs, duty cycle δ ≤ 0.02). This enables brief surge handling in motor commutation or ESD clamp circuits, provided average power remains within 200 mW derating limits.

How does the AEC-Q101 qualification impact thermal design?

AEC-Q101 qualification mandates extended temperature cycling (−40 °C to +125 °C) and high-temperature operating life testing, confirming reliability under thermal stress. However, thermal design still follows standard FR4 PCB derating: R_th(j-a) = 625 K/W means junction temperature rises 125 K at 200 mW-so ambient must stay ≤ 25 °C for full-rated power.

2PA1576S-QX Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: SC-70, SOT-323

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 150 mA

Voltage - Collector Emitter Breakdown (Max):: 50 V

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 5mA, 50mA

Current - Collector Cutoff (Max):: 100nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 270 @ 1mA, 6V

Power - Max:: 200 mW

Frequency - Transition:: 100MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-323

2PA1576S-QX FAQ

1.How can I place an order for 2PA1576S-QX through Aetrix?

Please submit a Request for Quotation (RFQ) for 2PA1576S-QX 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 2PA1576S-QX reliable?

The price and inventory of 2PA1576S-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2PA1576S-QX is usually 5 days.

3.What payment methods are accepted for 2PA1576S-QX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2PA1576S-QX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2PA1576S-QX?

2PA1576S-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2PA1576S-QX 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 2PA1576S-QX?

For technical support, including 2PA1576S-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2PA1576S-QX requirements.

6.How does Aetrix verify that 2PA1576S-QX is sourced from the original manufacturer or authorized distributors?

All 2PA1576S-QX 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 2PA1576S-QX meets industry standards.

7.What is the process for return or replacement of 2PA1576S-QX?

All 2PA1576S-QX units undergo pre-shipment inspection (PSI). If there is an issue with 2PA1576S-QX, 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 2PA1576S-QX part is unused and in its original packaging.

Return procedure for 2PA1576S-QX:

1.Submit a request within 90 days.

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

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