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

Nexperia USA Inc. 2PB1219AR,135

Name: 2PB1219AR,135
Brand: Nexperia USA Inc.
SKU: 2PB1219AR,135
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2PB1219AR,135

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: SC-70, SOT-323

Datasheet:: 2PB1219AR,135.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 linear amplification circuits in consumer power management and signal routing.

For engineers reviewing the 2PB1219AR datasheet, 2PB1219AR pinout, 2PB1219AR application, or 2PB1219AR equivalent, key selection criteria include its guaranteed h_FE range (120–240 at −150 mA), f_T of 120 MHz, thermal resistance (625 K/W), and SOT323 footprint compatibility with space-constrained PCB layouts.

Technical Context

This PNP BJT operates in active and saturation regions with defined DC current gain across collector current (−150 mA to −500 mA) and V_CE (−10 V), supporting stable biasing in emitter-follower and common-emitter configurations. Its low V_CEsat (≤ −600 mV) and V_BEsat (≤ −1.5 V) enable efficient switching in 3.3 V and 5 V rail systems.

Thermal performance is constrained by R_{th j-a} = 625 K/W under standard SOT323 mounting, limiting continuous power dissipation to 200 mW at T_amb ≤ 25 °C; junction temperature must remain ≤ 150 °C under all operating conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−50 V: Maximum safe collector-emitter voltage with base open; defines upper rail limit in PNP switch designs.
I_C (DC)	−500 mA: Continuous collector current rating; sets maximum load-handling capability in linear or saturated operation.
h_FE	120–240 at −150 mA/−10 V: Confirmed DC current gain range ensures predictable base drive sizing for gain-critical stages.
V_CEsat	≤ −600 mV at −300 mA/−30 mA: Low saturation voltage minimizes conduction loss and self-heating in switching applications.
f_T	120 MHz: Transition frequency supports small-signal amplification up to mid-VHF band without gain collapse.
R_{th j-a}	625 K/W: Thermal resistance confirms need for derating above 25 °C ambient; limits usable power in unheatsinked layouts.

Pinout & Package

SOT323 (SC-70) plastic surface-mount package: 1.35 mm × 1.15 mm × 0.95 mm body, 0.65 mm lead pitch, single-row 3-terminal configuration optimized for high-density routing and reflow compatibility.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Current-controlled input node; requires series resistor to limit I_B and ensure saturation or linear operation.
2	Emiter	Common terminal for PNP topology; connects to higher potential rail (e.g., V_CC) in switch configurations.
3	Collector	Output current sink node; delivers controlled current to load tied between collector and ground/V_SS.

Key Features

Feature	Design Value
Guaranteed h_FE binning	120–240 at −150 mA/−10 V enables consistent bias design without margin overkill.
Low V_CEsat	≤ −600 mV at −300 mA ensures <180 mW conduction loss, reducing thermal stress in compact assemblies.
High f_T	120 MHz supports broadband analog gain and fast digital edge handling in signal conditioning paths.
SOT323 footprint	Standardized 0.65 mm pitch allows drop-in replacement with other SC-70 transistors and automated placement.

Applications

LED Driver Circuit

Level-Shifting Interface

Use Scenario: Driving 20 mA indicator LEDs from 3.3 V microcontroller GPIO pins with inverted logic.

IC Role / Device Role / Timing Role: PNP switch sinking current from LED anode to V_CC, enabling active-low control with minimal external components.

Use Value: V_CEsat ≤ −600 mV ensures >2.7 V forward bias across LED, maintaining brightness while limiting base drive to <3 mA.

Use Scenario: Translating 1.8 V logic outputs to 5 V-tolerant inputs in mixed-voltage MCU peripherals.

IC Role / Device Role / Timing Role: Active-pull-up level shifter using emitter-follower configuration with base biased at 3.3 V reference.

Use Value: h_FE ≥ 120 guarantees sufficient current gain to drive 10 kΩ pull-up loads without signal degradation.

Power Rail Switch

Audio Signal Amplifier

Use Scenario: Enabling/disabling 5 V auxiliary power rail for USB peripherals in portable devices.

IC Role / Device Role / Timing Role: High-side PNP switch controlling V_CC delivery to downstream circuitry via base control from enable signal.

Use Value: −500 mA I_C rating supports peak loads up to 250 mA with 2× safety margin; low V_CEsat avoids rail droop.

Use Scenario: Low-noise preamplification stage for electret microphone signals before ADC sampling.

IC Role / Device Role / Timing Role: Common-emitter amplifier with emitter degeneration resistor for stable DC bias and AC gain control.

Use Value: f_T = 120 MHz provides >20 dB gain up to 20 kHz audio band; low C_c = 15 pF minimizes high-frequency roll-off.

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	V_CEO = −40 V, h_FE = 100–300 (unbinned), R_{th j-a} = 500 K/W	Lower voltage rating; higher thermal efficiency but wider h_FE spread affects bias stability.	Prefer where V_CC ≤ 40 V and tighter thermal budget exists; verify base resistor for target I_C.
BC807-25	V_CEO = −45 V, h_FE = 160–320 (25-bin), SOT23 package	Larger SOT23 footprint; tighter h_FE binning improves repeatability but increases board area.	Choose when production consistency is critical and PCB layout allows SOT23; not footprin-compatible with SOT323.

Compared with MMBT3906 and BC807-25, the 2PB1219AR offers superior voltage margin (−50 V), guaranteed mid-range h_FE (120–240), and smallest footprint-making it optimal for space-constrained, 5 V–system switching where predictable gain and thermal headroom are balanced.

Availability

2PB1219AR is available at Aetrix Electronics and suitable for LED driver circuits, level-shifting interfaces, power rail switches, and audio signal amplifiers requiring stable component supply and consistent parametric performance 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 discrete semiconductors, formed in 2017 from the former NXP Standard Products division, specializing in high-volume, automotive-qualified, and industrial-grade diodes, transistors, and logic devices.

The 2PB1219AR belongs to Nexperia's general-purpose bipolar transistor product line, engineered for cost-sensitive, reliability-critical applications in consumer electronics, wearables, and industrial controls where small size and predictable DC characteristics are essential.

FAQ

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

No. The 2PB1219AR (PNP) and 2PD1820A (NPN) share identical SOT323 pinout (base-emitter-collector on pins 1–2–3), but polarity reversal means direct substitution requires circuit topology changes-including swapping supply connections and inverting control logic-to maintain functional behavior.

What is the maximum allowable base current for continuous operation?

The absolute maximum peak base current is −200 mA per datasheet Limiting Values, but continuous operation should limit I_B to ≤ −30 mA (as tested for V_CEsat), ensuring junction temperature stays within 150 °C under 200 mW P_tot and standard SOT323 mounting conditions.

Does the 2PB1219AR support pulsed operation beyond its DC ratings?

Yes. The datasheet specifies I_CM = −1 A for peak collector current under pulse conditions (t_p ≤ 300 μs, duty cycle ≤ 2%), enabling short-duration surge handling-such as inductive kickback suppression or motor commutation spikes-provided average power remains within 200 mW.

How does the marking code "D∗R" identify this variant?

The marking "D∗R" on the top surface identifies the 2PB1219AR as the medium-gain bin (h_FE = 120–240); "∗" denotes manufacturing location (t = Malaysia, − = Hong Kong), and "R" distinguishes it from the Q (low-gain) and S (high-gain) variants in the same family.

2PB1219AR,135 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,135 FAQ

1.How can I place an order for 2PB1219AR,135 through Aetrix?

Please submit a Request for Quotation (RFQ) for 2PB1219AR,135 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,135 reliable?

The price and inventory of 2PB1219AR,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2PB1219AR,135 is usually 5 days.

3.What payment methods are accepted for 2PB1219AR,135?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2PB1219AR,135 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2PB1219AR,135?

2PB1219AR,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2PB1219AR,135 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,135?

For technical support, including 2PB1219AR,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2PB1219AR,135 requirements.

6.How does Aetrix verify that 2PB1219AR,135 is sourced from the original manufacturer or authorized distributors?

All 2PB1219AR,135 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,135 meets industry standards.

7.What is the process for return or replacement of 2PB1219AR,135?

All 2PB1219AR,135 units undergo pre-shipment inspection (PSI). If there is an issue with 2PB1219AR,135, 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,135 part is unused and in its original packaging.

Return procedure for 2PB1219AR,135:

1.Submit a request within 90 days.

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

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