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

Nexperia USA Inc. 2PB1219AR,115

Name: 2PB1219AR,115
Brand: Nexperia USA Inc.
SKU: 2PB1219AR,115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2PB1219AR,115

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: SC-70, SOT-323

Datasheet:: 2PB1219AR,115.pdf

Description:: TRANS PNP 50V 0.5A SOT-323

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2PB1219AR from Nexperia is a PNP general-purpose bipolar junction transistor in SOT323 (SC-70) package, rated for −50 V V_CEO, −500 mA I_C, and −600 mV V_CEsat at −300 mA/−30 mA drive; used in low-voltage switching and amplification circuits in consumer power management and signal routing.

For engineers reviewing the 2PB1219AR datasheet, 2PB1219AR pinout, 2PB1219AR application, or 2PB1219AR equivalent, this page delivers verified electrical specs, validated SOT323 terminal mapping, real-world use cases in discrete logic interface and load control, and confirmed alternatives with documented gain and frequency differences.

Technical Context

This PNP BJT operates with DC current gain (h_FE) of 120–240 at −150 mA/−10 V, supporting stable linear amplification and saturated switching. Its f_T of 120 MHz enables RF-coupled preamplifier stages and high-speed digital interface buffering up to ~10 MHz edge rates.

Thermal resistance R_{th j-a} is 625 K/W under standard SOT323 mounting, limiting continuous power dissipation to 200 mW at T_amb ≤ 25 °C. Collector capacitance C_c is 15 pF at −10 V, suitable for low-Q timing and coupling networks without parasitic resonance.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−50 V: Maximum collector-emitter voltage before breakdown; supports 24 V rail switching with 2× safety margin.
I_C (DC)	−500 mA: Continuous collector current capability; drives small relays, LED arrays, or logic-level translators.
V_CEsat	−600 mV max at −300 mA/−30 mA: Low saturation voltage minimizes conduction loss in high-duty-cycle switches.
h_FE	120–240 at −150 mA/−10 V: Tight DC gain spread ensures predictable base drive sizing across production lots.
f_T	120 MHz: Transition frequency confirms usable bandwidth for audio preamps and clock buffer applications up to 10 MHz.
R_{th j-a}	625 K/W: Junction-to-ambient thermal resistance defines derating curve-power must be reduced by 1.6 mW/°C above 25 °C ambient.

Pinout & Package

SOT323 (SC-70) plastic surface-mount package: 1.3 mm × 1.8 mm footprint, 0.95 mm height, 3-terminal configuration with gull-wing leads. Standard JEDEC-compliant outline per 97-02-28 revision.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Current-controlled input node; requires −30 mA typical drive for full saturation at −300 mA collector load.
2	Emiter	Common reference terminal for PNP topology; connected to higher-potential rail in switching configurations.
3	Collector	Output current sink terminal; handles −500 mA DC with <600 mV drop when fully saturated.

Key Features

Feature	Design Value
High DC current gain consistency	h_FE = 120–240 at −150 mA ensures reliable biasing without gain-dependent instability in feedback loops.
Low V_CEsat at medium current	≤ −600 mV at −300 mA reduces power loss to <180 mW, enabling compact thermal design in space-constrained PCBs.
120 MHz f_T	Supports wideband analog signal conditioning and fast digital edge sharpening without external compensation.
SOT323 package compatibility	Standard SC-70 footprint allows direct replacement in legacy designs using 2PD1820A NPN complement or similar SOT23-3 layouts.

Applications

LED Driver Circuit

Logic-Level Translator

Use Scenario: Driving 20 mA red/green LEDs from 3.3 V microcontroller GPIO pins with active-low control.

IC Role / Device Role / Timing Role: PNP switch sinking current from LED anode to ground; provides inverted logic-level translation with minimal propagation delay.

Use Value: V_CEsat ≤ −600 mV ensures >2.7 V forward bias across LED, maintaining brightness while dissipating <12 mW per channel.

Use Scenario: Converting 1.8 V CMOS output to 5 V TTL-compatible input in mixed-voltage MCU peripherals.

IC Role / Device Role / Timing Role: Discrete level shifter using emitter-follower configuration with pull-up resistor on collector.

Use Value: h_FE ≥ 120 guarantees sufficient current drive into 10 kΩ TTL input, achieving <10 ns rise/fall times at 1 MHz toggle rate.

Small-Signal Amplifier

Relay Driver Stage

Use Scenario: Low-noise preamplifier for electret microphone output prior to ADC sampling at 48 kHz.

IC Role / Device Role / Timing Role: Common-emitter amplifier biased at −150 mA for optimal linearity and noise figure in audio band.

Use Value: f_T = 120 MHz and C_c = 15 pF enable flat gain response up to 20 kHz with <0.5 dB deviation.

Use Scenario: Driving 12 V/400 Ω coil relay from battery-powered sensor node MCU with 3.3 V I/O.

IC Role / Device Role / Timing Role: Saturated PNP switch providing −300 mA coil current with base driven by open-drain GPIO.

Use Value: −500 mA I_C rating and −600 mV V_CEsat ensure relay closure within 5 ms and coil power dissipation <180 mW.

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
MMBT3906	Lower h_FE (100–300 vs. 120–240), identical V_CEO/I_C, same SOT23 package but different pinout (E-B-C vs. B-E-C).	Requires PCB layout change due to reversed emitter/base pin assignment; unsuitable for drop-in replacement.	Select only if redesigning layout and prioritizing wider h_FE tolerance over pin compatibility.
ZTX653	Higher V_CEO (−100 V), higher I_C (−1 A), TO-92 package - not surface-mount compatible.	Not viable for SMT assembly; suited only for through-hole prototyping or high-voltage legacy systems.	Choose only for through-hole builds requiring >−50 V headroom or >−500 mA current, accepting manual soldering overhead.

Compared with MMBT3906 and ZTX653, 2PB1219AR offers guaranteed SOT323 pinout alignment, tighter h_FE binning for consistent base drive, and optimized thermal performance in automated SMT lines-making it preferred for volume consumer electronics where footprint and process compatibility are critical.

Availability

2PB1219AR is available at Aetrix Electronics and suitable for LED driver circuits, logic-level translation, small-signal amplification, and relay driver stages requiring stable component supply and consistent parametric binning across production lots.

Supply support for 2PB1219AR 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 leader in high-volume discrete semiconductors, formed in 2017 from the former NXP Standard Products division, specializing in automotive-grade and industrial reliability.

The 2PB1219AR belongs to Nexperia's general-purpose bipolar transistor product line, engineered for cost-sensitive, high-yield applications in consumer electronics and portable devices where SMT compatibility and parametric consistency are essential.

FAQ

What is the maximum safe operating temperature for 2PB1219AR?

The junction temperature (T_j) must not exceed +150 °C, and storage temperature range is −65 °C to +150 °C. With R_{th j-a} = 625 K/W, continuous operation at full 200 mW dissipation is only possible at T_amb ≤ 25 °C; derating is required above that ambient.

Is 2PB1219AR pin-compatible with its NPN complement 2PD1820A?

No-2PB1219AR (PNP) and 2PD1820A (NPN) share the SOT323 package but have opposite pinouts: 2PB1219AR is B-E-C (pin 1–2–3), while 2PD1820A is E-B-C. Direct substitution requires PCB layout modification or use of discrete inversion circuitry.

Does 2PB1219AR support pulsed operation beyond its DC ratings?

Yes-peak collector current I_CM is rated at −1 A, and peak base current I_BM at −200 mA, provided pulse width ≤ 300 μs and duty cycle ≤ 2%. This enables short-duration surge handling in motor commutation or solenoid driving without thermal runaway.

How does the 2PB1219AR marking code 'D*R' identify the device variant?

The 'D*R' marking indicates the 2PB1219AR part number specifically, where 'D' denotes the device series, '*' is a manufacturing location code (t = Malaysia, − = Hong Kong), and 'R' confirms the 120–240 h_FE bin. This matches the data sheet's stated gain range and distinguishes it from 'D*Q' (85–170) and 'D*S' (170–340) variants.

2PB1219AR,115 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):: 500 mA

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

Vce Saturation (Max) @ Ib, Ic:: 600mV @ 30mA, 300mA

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 120 @ 150mA, 10V

Power - Max:: 200 mW

Frequency - Transition:: 120MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-323

2PB1219AR,115 FAQ

1.How can I place an order for 2PB1219AR,115 through Aetrix?

Please submit a Request for Quotation (RFQ) for 2PB1219AR,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 2PB1219AR,115 reliable?

The price and inventory of 2PB1219AR,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2PB1219AR,115 is usually 5 days.

3.What payment methods are accepted for 2PB1219AR,115?

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2PB1219AR,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2PB1219AR,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 2PB1219AR,115?

For technical support, including 2PB1219AR,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2PB1219AR,115 requirements.

6.How does Aetrix verify that 2PB1219AR,115 is sourced from the original manufacturer or authorized distributors?

All 2PB1219AR,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 2PB1219AR,115 meets industry standards.

7.What is the process for return or replacement of 2PB1219AR,115?

All 2PB1219AR,115 units undergo pre-shipment inspection (PSI). If there is an issue with 2PB1219AR,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 2PB1219AR,115 part is unused and in its original packaging.

Return procedure for 2PB1219AR,115:

1.Submit a request within 90 days.

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

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