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Nexperia USA Inc. PBSS4032PX-QX
- Part No.:
- PBSS4032PX-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
PBSS4032PX-QX.pdf
- Description:
- TRANS PNP 30V 4.2A SOT-89
- Quantity:
- Payment:
- Shipping:
Inventory:4,760
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Product details
Overview
PBSS4032PX-QX from Nexperia is a PNP low-VCEsat transistor in SOT89 package, designed for high-efficiency power switching in automotive and portable systems. It delivers −30 V VCEO, −4.2 A continuous collector current, 58 mΩ typical RCEsat, <1.1 V VBEsat at −4 A/−400 mA, and is AEC-Q101 qualified for under-hood battery management circuits.
For engineers reviewing the PBSS4032PX-QX datasheet, PBSS4032PX-QX pinout, PBSS4032PX-QX application, or PBSS4032PX-QX equivalent, this device is selected for low-loss DC-DC power switches, motor/fan drivers, and automotive charging control where thermal efficiency and space-constrained PCB layout are critical.
Technical Context
This PNP transistor operates with optimized saturation characteristics: VCEsat ≤ 345 mV at −4 A/−400 mA ensures minimal conduction loss, while fT = 115 MHz supports fast switching in PWM-controlled loads. Its hFE of 60–100 at −4 A enables robust base drive margin without excessive gate driver overhead.
Thermal design is enabled by three mounting configurations: Rth(j-a) = 210 K/W (standard FR4), 75 K/W (FR4 with 6 cm² collector pad), and 50 K/W (ceramic Al₂O₃), allowing scalable power handling up to 2.5 W at Tamb ≤ 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −30 V - Maximum safe collector-emitter voltage with open base; defines blocking capability in high-side switch topologies. |
| IC | −4.2 A - Continuous DC collector current rating; supports sustained load currents in automotive fan/motor drivers. |
| RCEsat | 58 mΩ typ - Low saturation resistance reduces I²R loss and heat generation, enabling smaller heatsinking or higher efficiency. |
| hFE | 60–100 @ −4 A - High DC current gain at full load allows simplified base drive circuitry with lower IB requirements. |
| toff | 220 ns - Fast turn-off time minimizes switching losses in PWM applications operating up to ~500 kHz. |
| VBEsat | −1.02 V typ @ −4 A/−400 mA - Predictable base-emitter voltage simplifies bias network design and improves thermal stability. |
| AEC-Q101 | Qualified - Meets stress test requirements for discrete semiconductors in automotive environments (−55 °C to +150 °C). |
Pinout & Package
SOT89 (SC-62) plastic surface-mount package: 3-lead, 1.5 mm pitch, 4.5 mm × 2.5 mm × 1.5 mm body, with exposed collector tab for thermal conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter (E) | Current exit node; connected to system ground or low-side return path in high-side switch configurations. |
| 2 | Collector (C) | Main power output terminal; electrically and thermally tied to PCB copper pour for heat dissipation. |
| 3 | Base (B) | Control input; requires −400 mA drive for full saturation at −4 A load, compatible with standard logic-level drivers. |
Key Features
| Feature | Design Value |
|---|---|
| Low VCEsat | ≤345 mV at −4 A/−400 mA - Reduces conduction loss by >40% vs. conventional PNP transistors, lowering thermal stress. |
| High IC capability | −4.2 A continuous / −10 A pulsed - Supports high-current automotive loads like radiator fans and seat motors without derating. |
| Optimized switching speed | ton = 90 ns, toff = 220 ns - Enables efficient operation in 100–500 kHz PWM power stages with minimal dead-time penalty. |
| Thermal performance | Rth(j-sp) = 20 K/W - Direct junction-to-solder-point path improves transient thermal response during short overloads. |
| Automotive qualification | AEC-Q101 compliant - Validated for temperature cycling, HTRB, and ESD per automotive reliability standards. |
Applications
| Automotive Battery Management | USB-C Power Delivery Switching |
|---|---|
|
Use Scenario: High-side power switch controlling 12 V battery feed to infotainment and ADAS modules. IC Role / Device Role / Timing Role: PNP power switch managing load enable/disable with reverse-polarity protection and low quiescent loss. Use Value: 58 mΩ RCEsat limits voltage drop to <240 mV at 4 A, preserving system voltage headroom and reducing thermal load on PCB. |
Use Scenario: Load switch in USB-C PD sink path regulating 5–20 V input to downstream DC-DC converters. IC Role / Device Role / Timing Role: Discrete PNP switch enabling/disabling power rail with fast response to PD controller fault signals. Use Value: 220 ns toff ensures rapid shutdown during overvoltage events, meeting USB-C PD 3.1 safety timing requirements. |
| Portable Power Tool Motor Control | Industrial Fan Speed Regulation |
|
Use Scenario: PWM-driven high-side switch for brushed DC motor in cordless drills and impact drivers. IC Role / Device Role / Timing Role: Main power transistor in half-bridge high-side leg, driven by gate driver IC. Use Value: −4.2 A IC and 115 MHz fT support 20 kHz PWM without switching loss penalty, maintaining torque linearity. |
Use Scenario: Constant-current fan driver in HVAC control units requiring stable airflow across ambient temperatures. IC Role / Device Role / Timing Role: Linear or PWM-controlled PNP pass element regulating fan voltage via feedback loop. Use Value: hFE ≥ 60 at −4 A ensures stable base current control across −40 °C to +125 °C, eliminating gain drift issues. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP low-VCEsat transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSS40301MZ4T1G | VCEO = −30 V, IC = −3.5 A, RCEsat = 85 mΩ typ - Lower current rating and higher saturation resistance. | Rated for commercial temp range only (−55 °C to +150 °C not validated); lacks AEC-Q101 certification. | Select when cost sensitivity outweighs automotive qualification and peak current demand. |
| Diodes Incorporated DXT7050ZQ-13 | VCEO = −50 V, IC = −3.0 A, RCEsat = 110 mΩ typ - Higher voltage rating but reduced current and higher loss. | Designed for general-purpose industrial use; no automotive qualification or thermal data for ceramic PCB mounting. | Choose for legacy designs requiring −50 V blocking, where lower efficiency and non-automotive reliability are acceptable. |
Compared with NSS40301MZ4T1G and DXT7050ZQ-13, PBSS4032PX-QX provides superior current handling, lower conduction loss, and verified automotive-grade reliability-making it the preferred choice for new AEC-Q101-compliant power switch designs.
Availability
PBSS4032PX-QX is available at Aetrix Electronics and suitable for automotive battery management, USB-C power delivery switching, and industrial fan speed regulation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PBSS4032PX-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-enhancing components, with leadership in logic, discrete, and MOSFET technologies for automotive, industrial, and mobile markets.
PBSS4032PX-QX belongs to Nexperia's Automotive-qualified PNP low-VCEsat transistor family, engineered specifically for high-reliability, high-efficiency power switching in space- and thermally-constrained automotive subsystems.
FAQ
What is the maximum allowable base current for PBSS4032PX-QX?
The absolute maximum base current is −1 A per datasheet limiting values. However, for reliable saturation at −4.2 A collector current, the recommended drive is −400 mA (IC/IB = 10.5). Exceeding −600 mA risks localized heating at the base contact without proportional gain improvement.
Can PBSS4032PX-QX be used in linear regulator applications?
Yes-it supports linear operation with VCE down to −2 V and maintains hFE ≥ 60 up to −4 A. Its 2.5 W Ptot rating on ceramic PCB enables stable dropout regulation, but thermal design must account for Rth(j-a) = 50 K/W and ambient derating above 75 °C.
How does the SOT89 package affect thermal performance compared to SOT223?
The SOT89 offers lower Rth(j-sp) (20 K/W vs. ~30 K/W for SOT223) due to shorter thermal path to solder joint, but its smaller footprint limits total copper area. On FR4 with 6 cm² collector pad, Rth(j-a) drops to 75 K/W-comparable to SOT223 on standard layout-while saving 30% board area.
Is there a pin-compatible NPN version of PBSS4032PX-QX?
Yes-the NPN complement is PBSS4032NX-Q, sharing identical SOT89 package, pinout (emitter/base/collector reversed), and matching electrical specs (30 V VCEO, 4.2 A IC, 58 mΩ RCEsat). Both are AEC-Q101 qualified and share identical thermal characteristics and footprint.
PBSS4032PX-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 4.2 A
- Voltage - Collector Emitter Breakdown (Max):
- 30 V
- Vce Saturation (Max) @ Ib, Ic:
- 400mV @ 200mA, 4A
- Current - Collector Cutoff (Max):
- 100nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 1A, 2V
- Power - Max:
- 600 mW
- Frequency - Transition:
- 115MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89
PBSS4032PX-QX FAQ
1.How can I place an order for PBSS4032PX-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PBSS4032PX-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 PBSS4032PX-QX reliable?
The price and inventory of PBSS4032PX-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBSS4032PX-QX is usually 5 days.
3.What payment methods are accepted for PBSS4032PX-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBSS4032PX-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PBSS4032PX-QX?
PBSS4032PX-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PBSS4032PX-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 PBSS4032PX-QX?
For technical support, including PBSS4032PX-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBSS4032PX-QX requirements.
6.How does Aetrix verify that PBSS4032PX-QX is sourced from the original manufacturer or authorized distributors?
All PBSS4032PX-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 PBSS4032PX-QX meets industry standards.
7.What is the process for return or replacement of PBSS4032PX-QX?
All PBSS4032PX-QX units undergo pre-shipment inspection (PSI). If there is an issue with PBSS4032PX-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 PBSS4032PX-QX part is unused and in its original packaging.
Return procedure for PBSS4032PX-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PBSS4032PX-QX Tags
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