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

NXP Semiconductors 2PA1576R/ZLX

Name: 2PA1576R/ZLX
Brand: NXP Semiconductors
SKU: 2PA1576R/ZLX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2PA1576R/ZLX

Manufacturer:: NXP Semiconductors

Category:: Single Bipolar Transistors

Package:: SC-70, SOT-323

Datasheet:: 2PA1576R/ZLX.pdf

Description:: TRANS PNP GEN PURPOSE SC70

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2PA1576R/ZLX from NXP Semiconductors is a PNP general-purpose bipolar junction transistor in SOT323 (SC-70) package, rated for −50 V V_CEO, −150 mA I_C, and 200 mW P_tot, with typical collector capacitance of 2.5 pF and DC current gain (h_FE) of 180–390 at I_C = −1 mA. It serves as a low-voltage, low-current switching or amplification device in compact consumer and industrial signal-path circuits.

For engineers reviewing the 2PA1576R/ZLX datasheet, 2PA1576R/ZLX pinout, 2PA1576R/ZLX application, or 2PA1576R/ZLX equivalent, key selection criteria include verified PNP polarity, SOT323 footprint compatibility, −50 V breakdown rating, 180–390 h_FE range at −1 mA, and thermal resistance of 625 K/W under standard FR4 mounting conditions.

Technical Context

The 2PA1576R/ZLX operates as a silicon PNP BJT with base-controlled current amplification, optimized for linear amplification and saturated switching in low-power analog and digital interface stages. Its −50 V V_CEO and −60 V V_CBO support operation in sub-48 V rail systems, while its 2.5 pF C_c enables stable high-frequency response up to 100 MHz f_T.

Designed for surface-mount assembly on FR4 PCBs with single-sided copper, the device exhibits R_th(j-a) = 625 K/W and maximum junction temperature of 150 °C. Its −500 mV V_CEsat at I_C = −50 mA / I_B = −5 mA confirms low-loss saturation performance suitable for discrete logic-level translation and load switching.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−50 V - Maximum safe collector-emitter voltage with open base; defines upper rail limit for PNP switch/amplifier stage
I_C (DC)	−150 mA - Continuous collector current rating; sets max steady-state load drive capability
P_tot	200 mW - Total power dissipation at T_amb ≤ 25 °C; constrains thermal design on standard FR4
h_FE	180–390 - DC current gain at I_C = −1 mA, V_CE = −6 V; determines base drive requirements for gain-critical circuits
C_c	2.5 pF (typ.) - Collector capacitance at V_CB = −12 V; impacts high-frequency stability and bandwidth in RF/IF stages
f_T	100 MHz - Transition frequency at I_C = −2 mA, V_CE = −12 V; validates suitability for VHF small-signal amplification
R_th(j-a)	625 K/W - Junction-to-ambient thermal resistance on standard FR4; informs derating above 25 °C ambient

Pinout & Package

SOT323 (SC-70) plastic surface-mounted package: 3-lead, 1.3 mm × 1.8 mm body, 0.65 mm lead pitch, 0.45 mm max height.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Current-controlled input node; requires series resistor to limit I_B and ensure saturation or linear bias
2	Emiter	Common terminal for PNP configuration; connects to higher potential rail in switching applications
3	Collector	Output current path; sinks current when base is forward-biased relative to emitter

Key Features

Feature	Design Value
Low-voltage PNP structure	−50 V V_CEO rating enables use in 24 V and lower automotive, industrial, and consumer supply rails
Low collector capacitance	2.5 pF typical C_c supports stable operation in 100 MHz small-signal amplifier designs without added compensation
High DC current gain	h_FE = 180–390 at −1 mA ensures reliable switching with minimal base drive current in battery-powered systems
SOT323 footprint	Standard SC-70 outline allows automated placement and reflow compatibility with high-density PCB layouts

Applications

LED Driver Circuit	Level-Shifting Interface
Use Scenario: Driving low-current indicator LEDs from microcontroller GPIO pins with active-low logic. IC Role / Device Role / Timing Role: Discrete PNP switch sinking LED current to ground when base is pulled low. Use Value: −500 mV V_CEsat at −50 mA ensures <100 mW dissipation per LED channel and >90% efficiency in 3.3 V/5 V systems.	Use Scenario: Translating 1.8 V logic outputs to 5 V or 12 V control signals in mixed-voltage subsystems. IC Role / Device Role / Timing Role: PNP-based level shifter with emitter tied to high rail and collector driving downstream gate/base. Use Value: 180–390 h_FE provides predictable current gain across process variation, enabling robust rise/fall time control without external feedback.
Audio Pre-amplifier Stage	Power Supply Enable Switch
Use Scenario: Low-noise, low-distortion voltage amplification in portable audio front-ends before ADC input. IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier biased in linear region with emitter degeneration. Use Value: 100 MHz f_T and 2.5 pF C_c preserve wideband fidelity up to 20 kHz with minimal phase shift and no peaking.	Use Scenario: Enabling/disabling auxiliary power rails (e.g., sensor bias, RF module V_CC) via MCU-controlled PNP high-side switch. IC Role / Device Role / Timing Role: High-side PNP pass element controlled by base resistor network. Use Value: −60 V V_CBO and −150 mA I_C allow safe operation with 12 V rails and transient overvoltage margin in noisy industrial environments.

LED Driver Circuit

Level-Shifting Interface

Use Scenario: Driving low-current indicator LEDs from microcontroller GPIO pins with active-low logic.

IC Role / Device Role / Timing Role: Discrete PNP switch sinking LED current to ground when base is pulled low.

Use Value: −500 mV V_CEsat at −50 mA ensures <100 mW dissipation per LED channel and >90% efficiency in 3.3 V/5 V systems.

Use Scenario: Translating 1.8 V logic outputs to 5 V or 12 V control signals in mixed-voltage subsystems.

IC Role / Device Role / Timing Role: PNP-based level shifter with emitter tied to high rail and collector driving downstream gate/base.

Use Value: 180–390 h_FE provides predictable current gain across process variation, enabling robust rise/fall time control without external feedback.

Audio Pre-amplifier Stage

Power Supply Enable Switch

Use Scenario: Low-noise, low-distortion voltage amplification in portable audio front-ends before ADC input.

IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier biased in linear region with emitter degeneration.

Use Value: 100 MHz f_T and 2.5 pF C_c preserve wideband fidelity up to 20 kHz with minimal phase shift and no peaking.

Use Scenario: Enabling/disabling auxiliary power rails (e.g., sensor bias, RF module V_CC) via MCU-controlled PNP high-side switch.

IC Role / Device Role / Timing Role: High-side PNP pass element controlled by base resistor network.

Use Value: −60 V V_CBO and −150 mA I_C allow safe operation with 12 V rails and transient overvoltage margin in noisy industrial environments.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
2PA1576S	Higher h_FE (270–560) and same SOT323 package; identical limiting values and thermal specs	Better suited for ultra-low-base-drive applications (e.g., high-impedance sensor interfaces), but less tolerant of h_FE spread in production	Select 2PA1576S only when guaranteed minimum gain >270 is required; otherwise 2PA1576R offers tighter h_FE consistency for cost-sensitive volume production
MMBT3906	Same SOT23 package (not pin-compatible); h_FE = 100–300, V_CEO = −40 V, P_tot = 225 mW, C_c = 4.0 pF	Lower voltage rating and higher capacitance limit use in >36 V or >50 MHz designs; SOT23 footprint requires board redesign	Choose MMBT3906 only if SOT23 is already standardized in design; not a drop-in replacement due to different pinout and reduced V_CEO

Compared with 2PA1576S and MMBT3906, the 2PA1576R/ZLX delivers optimal balance of gain consistency (180–390), −50 V ruggedness, and 2.5 pF low capacitance in the compact SOT323 footprint-making it preferred for space-constrained, medium-voltage switching where predictable base drive and thermal behavior are critical.

Availability

2PA1576R/ZLX is available at Aetrix Electronics and suitable for LED driver circuits, level-shifting interfaces, audio pre-amplifier stages, and power supply enable switches requiring stable component supply and consistent parametric performance across production lots.

Supply support for 2PA1576R/ZLX 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 IoT applications.

The 2PA1576R/ZLX belongs to NXP's general-purpose bipolar transistor product line, designed specifically for cost-effective, reliable discrete switching and amplification in space-constrained consumer and industrial electronics.

FAQ

What is the maximum collector-emitter voltage rating for the 2PA1576R/ZLX?

The 2PA1576R/ZLX has a maximum collector-emitter voltage (V_CEO) rating of −50 V with the base open. This rating applies under DC and pulse conditions per IEC 60134 Absolute Maximum Ratings, and must not be exceeded to prevent permanent device damage. Derating is required above 25 °C ambient temperature based on its 625 K/W thermal resistance.

Does the 2PA1576R/ZLX have a specified transition frequency (f_T)?

Yes, the 2PA1576R/ZLX has a minimum transition frequency (f_T) of 100 MHz, measured at I_C = −2 mA, V_CE = −12 V, and f = 100 MHz. This parameter confirms its capability for small-signal amplification in VHF-band applications such as IF stages and low-power RF buffers, provided layout parasitics are minimized.

What is the DC current gain (h_FE) range for the 2PA1576R/ZLX at typical operating conditions?

The 2PA1576R/ZLX exhibits a DC current gain (h_FE) range of 180 to 390 when tested at I_C = −1 mA and V_CE = −6 V, Tamb = 25 °C. This gain band is guaranteed per the datasheet and reflects the specific variant designation 'R'-distinct from the 'Q' (120–270) and 'S' (270–560) versions in the same family.

Is the 2PA1576R/ZLX pin-compatible with the NPN complement 2PC4081?

No, the 2PA1576R/ZLX is not pin-compatible with the 2PC4081. While both use the SOT323 package, the 2PA1576R/ZLX has Base–Emitter–Collector pinout (1–2–3), whereas the 2PC4081 NPN device uses Emitter–Base–Collector (1–2–3) per its datasheet-requiring PCB layout revision for direct substitution.

What is the thermal resistance from junction to ambient (R_th(j-a)) for the 2PA1576R/ZLX?

The thermal resistance from junction to ambient (R_th(j-a)) for the 2PA1576R/ZLX is 625 K/W when mounted on a standard FR4 PCB with single-sided copper, tin-plated, and using the recommended footprint. This value assumes natural convection cooling and defines the temperature rise per watt of dissipated power under those specific board-level conditions.

2PA1576R/ZLX Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: -

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

Voltage - Collector Emitter Breakdown (Max):: -

Vce Saturation (Max) @ Ib, Ic:: -

Current - Collector Cutoff (Max):: -

DC Current Gain (hFE) (Min) @ Ic, Vce:: -

Power - Max:: -

Frequency - Transition:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SC-70

2PA1576R/ZLX FAQ

1.How can I place an order for 2PA1576R/ZLX through Aetrix?

Please submit a Request for Quotation (RFQ) for 2PA1576R/ZLX 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 2PA1576R/ZLX reliable?

The price and inventory of 2PA1576R/ZLX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2PA1576R/ZLX is usually 5 days.

3.What payment methods are accepted for 2PA1576R/ZLX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2PA1576R/ZLX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2PA1576R/ZLX?

2PA1576R/ZLX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2PA1576R/ZLX 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 2PA1576R/ZLX?

For technical support, including 2PA1576R/ZLX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2PA1576R/ZLX requirements.

6.How does Aetrix verify that 2PA1576R/ZLX is sourced from the original manufacturer or authorized distributors?

All 2PA1576R/ZLX 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 2PA1576R/ZLX meets industry standards.

7.What is the process for return or replacement of 2PA1576R/ZLX?

All 2PA1576R/ZLX units undergo pre-shipment inspection (PSI). If there is an issue with 2PA1576R/ZLX, 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 2PA1576R/ZLX part is unused and in its original packaging.

Return procedure for 2PA1576R/ZLX:

1.Submit a request within 90 days.

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

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