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Nexperia USA Inc. PBSS302NX-QX
- Part No.:
- PBSS302NX-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
PBSS302NX-QX.pdf
- Description:
- TRANS NPN 20V 5.3A SOT-89
- Quantity:
- Payment:
- Shipping:
Inventory:4,246
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Product details
Overview
PBSS302NX-QX from Nexperia is an AEC-Q101-qualified NPN low VCE(sat) transistor in SOT89 package, rated for 20 V VCEO, 5.3 A continuous collector current, and 28 mΩ typical RCE(sat) at IC = 4 A / IB = 200 mA. It serves as a high-efficiency power switch in automotive DC-DC converters, MOSFET gate drivers, and motor control circuits where thermal performance and PCB space are constrained.
For engineers reviewing the PBSS302NX-QX datasheet, PBSS302NX-QX pinout, PBSS302NX-QX application, or PBSS302NX-QX equivalent, key selection criteria include its 200–380 hFE at 6 A, 140–200 mV VCE(sat) at 5.3 A/265 mA drive, AEC-Q101 qualification, SOT89 thermal footprint, and complementary PNP PBSS302PX-Q availability.
Technical Context
This discrete NPN transistor uses epitaxial planar technology optimized for low saturation voltage and high current gain at elevated collector currents. Its design targets switching applications requiring fast turn-on (ton = 55 ns) and low storage time (ts = 270 ns), with base-emitter turn-on voltage of 0.75–0.85 V at IC = 2 A.
Thermal performance is defined across three mounting conditions: Rth(j-a) = 208 K/W (FR4 standard), 76 K/W (FR4 with 6 cm² collector pad), and 60 K/W (ceramic Al₂O₃). Junction temperature is rated to 150 °C, supporting operation in under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 20 V - Maximum allowable collector-emitter voltage with base open; defines safe blocking capability in 12 V automotive systems. |
| IC | 5.3 A - Continuous DC collector current rating; supports sustained load switching in fan/motor drivers without derating at 25 °C ambient. |
| RCE(sat) | 28 mΩ (typ) - Low on-state resistance at IC = 4 A / IB = 200 mA; reduces conduction loss and heat generation vs. standard transistors. |
| hFE | 200–380 - High DC current gain at IC = 6 A; enables efficient base drive with modest IB, lowering driver circuit complexity. |
| ton/toff | 55 ns / 355 ns - Fast switching times under 12.5 V VCC, 3 A IC; suitable for PWM frequencies up to ~1 MHz in compact power stages. |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive discrete semiconductors; validated for temperature cycling, HTRB, and ESD robustness. |
Pinout & Package
SOT89 (SC-62/TO-243) plastic surface-mount package: 4.5 mm × 2.5 mm × 1.5 mm body, 1.5 mm lead pitch, single-sided copper FR4 mountable, with exposed collector tab for thermal conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter | Current return path; connected to ground or low-side reference; requires low-inductance layout for switching stability. |
| 2 | Collector | Main power output terminal; electrically and thermally tied to PCB copper pour; handles full load current and dissipates heat. |
| 3 | Base | Control input; driven by logic-level or dedicated gate driver; requires series resistor to limit IB to 200–400 mA for specified RCE(sat). |
Key Features
| Feature | Design Value |
|---|---|
| Low VCE(sat) | 140–200 mV at IC = 5.3 A / IB = 265 mA - Reduces power dissipation by >50% vs. conventional transistors at same current, enabling smaller heatsinks. |
| High hFE at high IC | 200–380 at IC = 6 A - Maintains strong current amplification under heavy load, minimizing required base drive power and driver size. |
| Automotive qualification | AEC-Q101 compliant - Validated for temperature cycling (-65 °C to +150 °C), humidity, and mechanical stress per automotive reliability standards. |
| Thermal efficiency | Rth(j-sp) = 20 K/W - Low junction-to-solder-point resistance enables rapid heat transfer to PCB, improving long-term reliability in sealed enclosures. |
Applications
| Automotive DC-DC Converters | MOSFET Gate Driving |
|---|---|
Use Scenario: Step-down conversion in 12 V battery-fed subsystems (e.g., infotainment power rails). IC Role / Device Role / Timing Role: Primary low-side switch in synchronous buck topology, operating at 200–500 kHz PWM frequency. Use Value: 28 mΩ RCE(sat) cuts conduction loss by ~40% versus standard transistors, reducing thermal load on adjacent ICs and enabling higher power density. |
Use Scenario: Driving high-capacitance N-channel MOSFET gates in BLDC motor inverters. IC Role / Device Role / Timing Role: Active pull-down stage to rapidly discharge gate charge during turn-off, complementing high-side driver. Use Value: 355 ns toff ensures clean gate discharge within tight dead-time windows, preventing shoot-through in 20–40 kHz motor drives. |
| Automotive Fan/Motor Control | On-Board Charging Circuits |
Use Scenario: PWM-controlled radiator cooling fan in engine bay with ambient up to 105 °C. IC Role / Device Role / Timing Role: Low-side power switch interfacing microcontroller GPIO to 12 V fan load. Use Value: AEC-Q101 qualification and 150 °C Tj rating ensure reliable operation under sustained thermal stress and vibration. |
Use Scenario: Current-limiting switch in USB-C PD or wireless charging auxiliary power paths. IC Role / Device Role / Timing Role: Overcurrent protection element placed between charger IC and battery input rail. Use Value: 10.6 A ICM peak rating supports surge handling during hot-plug events while maintaining <200 mV dropout at 5.3 A steady state. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN low VCE(sat) transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSS30201MR6T1G | 20 V VCEO, 4.5 A IC, 35 mΩ RCE(sat), SOT-23 package | Lower current rating and higher RCE(sat); limited thermal mass due to smaller SOT-23 footprint | Preferred for space-constrained non-automotive designs where <4.5 A load and no AEC-Q101 requirement exist. |
| Diodes Incorporated DXT3020PZ-13 | 20 V VCEO, 5 A IC, 45 mΩ RCE(sat), SOT89 package, AEC-Q101 qualified | Higher RCE(sat) and lower hFE (120–240); identical thermal mounting but reduced efficiency at full load | Acceptable drop-in for cost-sensitive automotive programs where 10–15% higher conduction loss is tolerable. |
Compared with NSS30201MR6T1G and DXT3020PZ-13, PBSS302NX-QX delivers superior current capability (5.3 A), lowest RCE(sat) (28 mΩ typ), and highest hFE at high IC, making it optimal for thermally demanding automotive power switches where efficiency and reliability are prioritized over footprint minimization.
Availability
PBSS302NX-QX is available at Aetrix Electronics and suitable for automotive DC-DC converters, MOSFET gate driving circuits, and motor control modules requiring stable component supply, AEC-Q101 compliance, and high-current low-VCE(sat) performance.
Supply support for PBSS302NX-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 high-volume, high-reliability essential semiconductors, with leadership in logic, discretes, and MOSFETs for automotive, industrial, and mobile markets.
PBSS302NX-QX belongs to Nexperia's Automotive Logic and Discretes product line, engineered specifically for high-efficiency, AEC-Q101-qualified power switching in harsh-environment automotive subsystems.
FAQ
What is the maximum allowable junction temperature for PBSS302NX-QX?
The absolute maximum junction temperature (Tj) is 150 °C, as defined in the Limiting Values table. Operation at this temperature requires strict adherence to thermal derating curves-e.g., 2.1 W Ptot only on ceramic PCB, dropping to 0.6 W on standard FR4. Thermal design must maintain Tj ≤ 150 °C under worst-case ambient and power dissipation.
Is PBSS302NX-QX pin-compatible with its PNP complement PBSS302PX-Q?
Yes-both devices share identical SOT89 package dimensions, pin assignment (Emitter–Collector–Base), and solder footprint per Figures 14 and 15. This allows mirrored placement in complementary emitter-follower or H-bridge configurations without layout changes, simplifying dual-transistor board design.
How does the 28 mΩ RCE(sat) translate to real-world power loss at 4 A?
At IC = 4 A, RCE(sat) = 28 mΩ (typ) yields Ploss = IC² × RCE(sat) = 16 × 0.028 = 0.448 W. This is 35% lower than a typical 40 mΩ device (0.64 W), directly reducing thermal stress and enabling smaller PCB copper areas or eliminating heatsinks in many 12 V automotive loads.
Can PBSS302NX-QX be used in linear regulator applications?
No-it is optimized for switching operation, not linear regulation. Its Safe Operating Area (SOA) is not characterized for DC linear mode, and sustained operation at high VCE × IC products risks thermal runaway. The datasheet specifies only pulsed and switching conditions; use only in saturated-switch or active-switching roles per Quick Reference Data and Characteristics sections.
PBSS302NX-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 5.3 A
- Voltage - Collector Emitter Breakdown (Max):
- 20 V
- Vce Saturation (Max) @ Ib, Ic:
- 220mV @ 40mA, 4A
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 300 @ 1A, 2V
- Power - Max:
- 600 mW
- Frequency - Transition:
- 140MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89
PBSS302NX-QX FAQ
1.How can I place an order for PBSS302NX-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PBSS302NX-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 PBSS302NX-QX reliable?
The price and inventory of PBSS302NX-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBSS302NX-QX is usually 5 days.
3.What payment methods are accepted for PBSS302NX-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBSS302NX-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PBSS302NX-QX?
PBSS302NX-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PBSS302NX-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 PBSS302NX-QX?
For technical support, including PBSS302NX-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBSS302NX-QX requirements.
6.How does Aetrix verify that PBSS302NX-QX is sourced from the original manufacturer or authorized distributors?
All PBSS302NX-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 PBSS302NX-QX meets industry standards.
7.What is the process for return or replacement of PBSS302NX-QX?
All PBSS302NX-QX units undergo pre-shipment inspection (PSI). If there is an issue with PBSS302NX-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 PBSS302NX-QX part is unused and in its original packaging.
Return procedure for PBSS302NX-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PBSS302NX-QX Tags
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