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Nexperia USA Inc. PBSS306NX-QX
- Part No.:
- PBSS306NX-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
PBSS306NX-QX.pdf
- Description:
- TRANS NPN 100V 4.5A SOT-89
- Quantity:
- Payment:
- Shipping:
Inventory:4,009
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Product details
Overview
PBSS306NX-QX from Nexperia is an AEC-Q101-qualified NPN low VCEsat transistor in SOT89 package, designed for high-voltage switching roles in automotive power stages. It delivers 100 V VCEO, 4.5 A continuous IC, and 40–56 mΩ RCEsat at 4 A/200 mA drive - enabling efficient high-side gate driving and DC-DC power switches.
For engineers reviewing the PBSS306NX-QX datasheet, PBSS306NX-QX pinout, PBSS306NX-QX application, or PBSS306NX-QX equivalent, this device is selected for high-voltage motor control, automotive HV battery management, and compact high-efficiency power conversion where thermal performance and saturation voltage are critical selection criteria.
Technical Context
This NPN transistor operates as a high-current, low-saturation switch with VCEsat ≤ 245 mV at 4.5 A/225 mA drive and fT = 110 MHz, supporting fast switching in hard-switched topologies. Its hFE ranges from 40 to 70 at 5 A, ensuring stable current gain under high-load conditions.
Thermal design is enabled by three mounting configurations: Rth(j-a) = 208 K/W (standard FR4), 76 K/W (FR4 with 6 cm² collector pad), and 60 K/W (ceramic Al₂O₃ PCB). Junction temperature is rated to 150 °C, aligned with automotive under-hood requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 100 V - supports operation in 48 V and 60 V automotive systems with margin against transients. |
| IC | 4.5 A continuous - enables direct drive of MOSFET gates or small motors without external buffering. |
| RCEsat | 40–56 mΩ at 4 A/200 mA - reduces conduction loss and die heating in high-duty-cycle applications. |
| VCEsat | 170–245 mV at 4.5 A/225 mA - ensures minimal voltage drop across switch during saturation. |
| fT | 110 MHz - supports fast turn-on/turn-off (ton = 330 ns, toff = 530 ns) in PWM-controlled circuits. |
| hFE | 40–70 at 5 A - provides predictable base drive requirement and stable gain across temperature. |
| Tj max | 150 °C - qualified for under-hood automotive environments per AEC-Q101 stress testing. |
Pinout & Package
SOT89 (SC-62/TO-243) plastic surface-mount package: 3-pin, 1.5 mm pitch, 4.5 × 2.5 × 1.5 mm body, with exposed collector tab for thermal conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter | Reference node for current return path; connected to ground or low-side rail in common-emitter configuration. |
| 2 | Collector | Main current output terminal; electrically and thermally tied to exposed metal tab for PCB heat sinking. |
| 3 | Base | Control input requiring ~225 mA drive for full saturation at 4.5 A load; sensitive to ESD per AEC-Q101. |
Key Features
| Feature | Design Value |
|---|---|
| Low VCEsat | 170–245 mV at rated IC - cuts conduction loss by >40% vs. standard bipolar transistors, reducing heatsink size. |
| AEC-Q101 qualification | Qualified for automotive use - includes HTOL, TC, HTRB, and ESD testing per JESD47, enabling deployment in safety-critical modules. |
| High IC/ICM | 4.5 A continuous / 9 A peak - supports short-duration surge loads like motor startup or inductive kickback clamping. |
| Thermal flexibility | Rth(j-a) down to 60 K/W on ceramic PCB - allows layout adaptation for space-constrained or high-power-density designs. |
| High hFE at high current | 40–70 at 5 A - lowers required base drive current and simplifies driver circuitry versus legacy low-gain transistors. |
Applications
| High-Voltage DC-DC Conversion | Automotive Motor Control |
|---|---|
Use Scenario: Step-down converter in 48 V mild-hybrid vehicle architecture, regulating auxiliary power for ADAS sensors. IC Role / Device Role / Timing Role: High-side switch controlling energy transfer into output inductor; operates at 100–200 kHz PWM frequency. Use Value: Low RCEsat minimizes power loss at 4.5 A load, improving system efficiency by ≥2.1% over standard bipolar alternatives. |
Use Scenario: Driving gate of 100 V N-channel MOSFET in HVAC blower motor controller. IC Role / Device Role / Timing Role: Active pull-up stage providing fast, low-loss gate charge delivery during MOSFET turn-on. Use Value: 110 MHz fT and 330 ns ton ensure sub-microsecond switching, reducing shoot-through risk in half-bridge drivers. |
| High-Voltage Power Switch | Automotive Battery Disconnect |
Use Scenario: Solid-state relay replacement in 60 V battery-powered industrial tool, switching fan and pump loads. IC Role / Device Role / Timing Role: Main current-handling switch in series with load; biased in saturation during ON state. Use Value: 100 V VCEO withstands load-dump transients up to ISO 7637-2 Pulse 5a, eliminating need for external TVS. |
Use Scenario: Isolation switch in 12/48 V dual-battery system, enabling controlled disconnection during fault events. IC Role / Device Role / Timing Role: Fail-safe current interrupter activated by microcontroller GPIO; requires guaranteed turn-off under all conditions. Use Value: AEC-Q101 qualification and 150 °C Tj rating ensure reliable operation during prolonged thermal stress in engine bay mounting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN low VCEsat transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSS30600DX | VCEO = 60 V, IC = 6 A, RCEsat = 25 mΩ - lower voltage rating but higher current and lower saturation resistance. | Not suitable for 100 V systems; better for 24–48 V high-current gate drivers where voltage margin is less critical. | Select when operating voltage ≤60 V and lowest possible conduction loss is prioritized over transient immunity. |
| Diodes Incorporated DXT3060P | VCEO = 100 V, IC = 3.5 A, RCEsat = 65 mΩ - same voltage rating but lower current and higher saturation resistance. | Acceptable for lower-power motor control or signal-level switching where 4.5 A headroom is not required. | Select when cost sensitivity outweighs efficiency targets and thermal budget permits higher RCEsat. |
Compared with NSS30600DX and DXT3060P, PBSS306NX-QX uniquely balances 100 V capability, 4.5 A current, and 40–56 mΩ RCEsat - making it optimal for automotive 48 V systems needing both voltage margin and thermal efficiency without over-spec'ing current rating.
Availability
PBSS306NX-QX is available at Aetrix Electronics and suitable for automotive battery management, high-voltage DC-DC converters, and motor control modules requiring stable component supply across extended production lifecycles.
Supply support for PBSS306NX-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 discrete and logic devices, with leadership in automotive-qualified components.
PBSS306NX-QX belongs to Nexperia's "Low VCEsat Transistor" product line, engineered specifically for replacing mechanical relays and enhancing efficiency in automotive power distribution and motor drive circuits.
FAQ
What is the maximum allowable base current for reliable operation?
The datasheet specifies IB = 225 mA for full saturation at IC = 4.5 A. Peak base current must not exceed 400 mA (per VBEsat test condition), and continuous base drive should remain ≤250 mA to avoid thermal overstress at Tamb > 85 °C. Derating curves confirm safe operation up to 150 °C junction temperature.
Can PBSS306NX-QX be used in linear amplifier mode?
No - this device is optimized for switching operation only. Its low VCEsat structure and thermal design prioritize saturated conduction, not analog linearity. The hFE variation across IC (40–70) and lack of specified linearity parameters make it unsuitable for Class-A/B amplification.
Is the SOT89 package lead-free and RoHS compliant?
Yes - PBSS306NX-QX uses lead-free terminations and complies with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. The package meets JEDEC J-STD-020 moisture sensitivity level MSL3 and is compatible with standard reflow profiles including IPC/JEDEC J-STD-020D.2.
How does its thermal performance compare between FR4 and ceramic PCB mounting?
On standard FR4, Rth(j-a) = 208 K/W limits usable power to ~0.6 W at 25 °C ambient. With a 6 cm² copper collector pad, Rth(j-a) drops to 76 K/W, enabling ~1.65 W dissipation. On Al₂O₃ ceramic, Rth(j-a) = 60 K/W supports up to 2.1 W - a 3.5× improvement in thermal capacity over basic FR4 mounting.
PBSS306NX-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):
- 4.5 A
- Voltage - Collector Emitter Breakdown (Max):
- 100 V
- Vce Saturation (Max) @ Ib, Ic:
- 245mV @ 225mA, 4.5A
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 500mA, 2V
- Power - Max:
- 600 mW
- Frequency - Transition:
- 110MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89
PBSS306NX-QX FAQ
1.How can I place an order for PBSS306NX-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PBSS306NX-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 PBSS306NX-QX reliable?
The price and inventory of PBSS306NX-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBSS306NX-QX is usually 5 days.
3.What payment methods are accepted for PBSS306NX-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBSS306NX-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PBSS306NX-QX?
PBSS306NX-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PBSS306NX-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 PBSS306NX-QX?
For technical support, including PBSS306NX-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBSS306NX-QX requirements.
6.How does Aetrix verify that PBSS306NX-QX is sourced from the original manufacturer or authorized distributors?
All PBSS306NX-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 PBSS306NX-QX meets industry standards.
7.What is the process for return or replacement of PBSS306NX-QX?
All PBSS306NX-QX units undergo pre-shipment inspection (PSI). If there is an issue with PBSS306NX-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 PBSS306NX-QX part is unused and in its original packaging.
Return procedure for PBSS306NX-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PBSS306NX-QX Tags
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Diodes Incorporated
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Nexperia USA Inc.
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