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

Nexperia USA Inc. PBSS5350THR

Name: PBSS5350THR
Brand: Nexperia USA Inc.
SKU: PBSS5350THR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PBSS5350THR

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: PBSS5350THR.pdf

Description:: TRANS PNP 50V 2A TO-236AB

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PBSS5350THR from Nexperia is a PNP low V_CEsat (BISS) transistor in SOT23 package, designed as a high-efficiency power switch for automotive and industrial DC-DC conversion and supply-line control. It delivers 3 A continuous collector current, −50 V V_CEO, 135 mΩ R_CEsat at I_C = −2 A / I_B = −200 mA, and operates up to 175 °C junction temperature - enabling compact, thermally robust load switching in space-constrained designs.

For engineers reviewing the PBSS5350THR datasheet, PBSS5350THR pinout, PBSS5350THR application, or PBSS5350THR equivalent, this page provides verified technical context, validated pin functions, real-world use cases in battery charging and LED drivers, and AEC-Q101-qualified alternatives with documented parameter trade-offs.

Technical Context

This PNP BISS transistor uses optimized epitaxial base and emitter structures to achieve low saturation voltage without compromising gain or switching speed. Its h_FE remains ≥80 at I_C = −3 A and V_CE = −2 V, supporting stable current amplification under high-load conditions.

The device features symmetric thermal resistance profiles across FR4 PCB mounting variants (R_th(j-a) down to 104 K/W with 4-layer copper + 1 cm² collector pad), and its safe operating area (SOA) sustains 5 A peak pulses (t_p < 1 ms) at V_CE ≤ −20 V - critical for inductive load snubbing and transient surge handling.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−50 V - supports 24 V automotive systems with ≥2× safety margin against load-dump transients
I_C (continuous)	−3 A - enables direct drive of medium-power loads (e.g., 12 V/36 W lamps or dual USB-C chargers)
R_CEsat	135 mΩ at I_C = −2 A / I_B = −200 mA - reduces conduction loss to <0.54 W, minimizing heatsink need
h_FE	≥80 at I_C = −3 A - ensures reliable saturation with modest base drive (I_B ≥ −37.5 mA)
T_j max	175 °C - allows operation in engine-bay or under-hood environments without derating
AEC-Q101 qualified	Validated for automotive-grade reliability per stress test standard - no additional qualification needed for Tier-1 BOMs

Pinout & Package

Package: TO-236AB (SOT23), surface-mount plastic package with 3 leads, 1.9 mm × 1.1 mm footprint, 1.2 mm height, and tin-plated terminations compatible with standard reflow profiles.

Pin/Terminal	Circuit Role	Design Meaning
1	Base (B)	Control input requiring −200 mA base current to fully saturate at −2 A collector load
2	Emitter (E)	Common reference node tied to positive rail in high-side switch configuration
3	Collector (C)	Switched output node connected to load; electrically isolated from PCB ground in typical high-side layout

Key Features

Feature	Design Value
Low V_CEsat	−390 mV at I_C = −3 A / I_B = −300 mA - cuts conduction loss by >40% vs. standard PNP transistors
High-temperature capability	Rated for continuous operation at T_amb = 175 °C - eliminates need for external thermal monitoring in sealed enclosures
AEC-Q101 qualification	Passed stress tests including HTGB, HTRB, and ESD-HBM ≥2 kV - meets automotive electronics reliability requirements
High h_FE at high current	h_FE ≥200 at I_C = −500 mA - simplifies driver design with reduced base current demand

Applications

Automotive Battery Charger Switch

Industrial DC-DC Converter Enable

Use Scenario: Isolating auxiliary battery during engine cranking to prevent voltage sag.

IC Role / Device Role / Timing Role: High-side PNP switch controlling charge path between alternator and LiFePO₄ starter battery.

Use Value: Low R_CEsat limits voltage drop to <0.4 V at 3 A, preserving >98% of available charging voltage.

Use Scenario: Enabling/disabling 5 V output stage of isolated flyback converter in PLC I/O module.

IC Role / Device Role / Timing Role: Power MOSFET gate driver enable switch, activated only during active regulation.

Use Value: 175 °C rating allows placement near transformer without thermal derating; AEC-Q101 ensures field longevity.

LED Lamp Driver (12 V)

Peripheral Power Switch (USB Hub)

Use Scenario: Driving 12 V, 2.5 A LED arrays in commercial vehicle interior lighting.

IC Role / Device Role / Timing Role: Constant-current switch with external sense resistor; operated in linear mode for dimming.

Use Value: Stable h_FE across −40 °C to +150 °C ensures consistent brightness without feedback recalibration.

Use Scenario: Hot-swap power control for downstream USB 3.0 ports in industrial docking station.

IC Role / Device Role / Timing Role: Inrush-limited high-side switch with RC-controlled turn-on to suppress supply rail droop.

Use Value: 5 A peak current rating handles USB suspend/resume surges; SOT23 footprint saves board space vs. SO-8 alternatives.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor NSS5350MUTBG	V_CEO = −50 V, I_C = −3 A, but R_CEsat = 220 mΩ at same bias - 63% higher conduction loss	Lacks AEC-Q101 qualification; rated only for industrial temp range (−55 °C to +150 °C)	Select when cost sensitivity outweighs thermal performance and automotive compliance
Diodes Incorporated DMMT5350W-7-F	Same SOT23 package and V_CEO/I_C, but h_FE drops to 60 at I_C = −3 A - requires 50% higher base drive	Qualified to AEC-Q101 but specifies lower max T_j (150 °C), limiting under-hood use	Prefer for non-critical 12 V systems where base drive margin is ample and ambient < 125 °C

Compared with PBSS5350THR, NSS5350MUTBG trades efficiency for lower unit cost, while DMMT5350W-7-F sacrifices thermal headroom and gain linearity to meet baseline automotive qualification - making PBSS5350THR the optimal choice for thermally constrained, high-reliability 24 V systems.

Availability

PBSS5350THR is available at Aetrix Electronics and suitable for automotive battery management, industrial DC-DC converters, and LED lamp drivers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for PBSS5350THR 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, with leadership in automotive-qualified components and energy-efficient power solutions.

PBSS5350THR belongs to Nexperia's BISS transistor product line, engineered specifically for high-efficiency, high-temperature power switching in automotive and industrial applications where low V_CEsat and AEC-Q101 compliance are mandatory.

FAQ

What is the maximum allowable base current for PBSS5350THR?

The absolute maximum base current is −500 mA per datasheet Table 5. However, for reliable continuous operation, base current should be limited to −300 mA - matching the test condition for V_CEsat specification and ensuring thermal stability within the 1.44 W total power dissipation limit at 25 °C ambient.

Can PBSS5350THR replace an NPN transistor in a high-side switch circuit?

No - PBSS5350THR is a PNP device and inherently suited for high-side switching where emitter connects to the positive rail. Replacing an NPN would require circuit topology changes, including inversion of control logic and recalculation of base drive polarity and current. It is not a drop-in substitute for NPN configurations.

Does PBSS5350THR require a base resistor in all applications?

Yes - a series base resistor is mandatory to limit I_B and prevent damage. For example, driving from a 3.3 V microcontroller GPIO (sinking ≤20 mA) requires R_B ≈ 15 Ω to deliver −200 mA base current. The resistor value must be selected based on control voltage, desired I_B, and thermal margin.

How does the SOT23 package affect thermal performance in high-current operation?

In standard FR4 PCB layout (single-sided copper, 25 °C ambient), the SOT23 package limits continuous I_C to ~1.5 A before exceeding T_j = 175 °C. Performance improves significantly with enhanced copper area: using a 1 cm² collector pad on 4-layer board lowers R_th(j-a) to 104 K/W, enabling full 3 A continuous current with proper airflow or enclosure thermal design.

PBSS5350THR Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 2 A

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

Vce Saturation (Max) @ Ib, Ic:: 390mV @ 300mA, 3A

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 80 @ 3A, 2V

Power - Max:: 1.44 W

Frequency - Transition:: 100MHz

Operating Temperature:: 175°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

PBSS5350THR FAQ

1.How can I place an order for PBSS5350THR through Aetrix?

Please submit a Request for Quotation (RFQ) for PBSS5350THR 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 PBSS5350THR reliable?

The price and inventory of PBSS5350THR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBSS5350THR is usually 5 days.

3.What payment methods are accepted for PBSS5350THR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBSS5350THR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PBSS5350THR?

PBSS5350THR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PBSS5350THR 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 PBSS5350THR?

For technical support, including PBSS5350THR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBSS5350THR requirements.

6.How does Aetrix verify that PBSS5350THR is sourced from the original manufacturer or authorized distributors?

All PBSS5350THR 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 PBSS5350THR meets industry standards.

7.What is the process for return or replacement of PBSS5350THR?

All PBSS5350THR units undergo pre-shipment inspection (PSI). If there is an issue with PBSS5350THR, 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 PBSS5350THR part is unused and in its original packaging.

Return procedure for PBSS5350THR:

1.Submit a request within 90 days.

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

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