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Nexperia USA Inc. PBSS4140T-QR
- Part No.:
- PBSS4140T-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PBSS4140T-QR.pdf
- Description:
- TRANS NPN 40V 1A TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,485
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Product details
Overview
PBSS4140T-QR from Nexperia is a 40 V, 1 A NPN low VCE(sat) transistor in SOT23 package, designed for high-efficiency switching in automotive and portable electronics. It delivers RCE(sat) = 260 mΩ (typ) at IC = 500 mA / IB = 50 mA, VCE(sat) ≤ 500 mV at IC = 1 A / IB = 100 mA, and is AEC-Q101 qualified for under-hood automotive use.
For engineers reviewing the PBSS4140T-QR datasheet, PBSS4140T-QR pinout, PBSS4140T-QR application, or PBSS4140T-QR equivalent, this page provides verified electrical parameters, thermal resistance (Rth(j-a) = 278 K/W with 1 cm² collector pad), DC current gain (hFE ≥ 200 at IC = 1 A), and automotive qualification status - all critical for battery-switching and LCD backlight designs.
Technical Context
This NPN transistor operates as a saturated switch with low conduction loss, optimized for continuous DC or pulsed operation up to 2 A peak. Its design emphasizes thermal efficiency: junction-to-ambient Rth(j-a) is 417 K/W on standard FR4 and improves to 278 K/W with enhanced copper pad layout.
The device exhibits stable hFE across temperature (−55 °C to +150 °C), with VCE(sat) < 900 mV at IC = 500 mA and Tamb = 25 °C, and supports fast switching via fT = 150 MHz at VCE = 10 V / IC = 50 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 40 V - Maximum safe collector-emitter voltage with base open; defines maximum supply rail compatibility. |
| IC | 1 A continuous - Rated DC collector current; sets steady-state load-handling capability. |
| VCE(sat) | ≤ 500 mV at IC = 1 A / IB = 100 mA - Low saturation voltage minimizes power loss and self-heating in switching mode. |
| RCE(sat) | 260–500 mΩ (typ–max) at IC = 500 mA / IB = 50 mA - Equivalent on-resistance directly determines I²R conduction loss. |
| hFE | ≥ 200 at VCE = 5 V / IC = 1 A - Ensures reliable saturation with modest base drive, reducing driver complexity. |
| fT | 150 MHz - Supports high-speed digital switching and PWM frequencies up to several MHz without significant gain roll-off. |
| Tj(max) | 150 °C - Enables operation in under-hood automotive environments and compact PCB layouts with limited airflow. |
Pinout & Package
SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch), optimized for automated assembly and thermal performance on FR4 PCBs with tin-plated 35 µm copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - B | Base | Control input requiring IB = 100 mA for full saturation at IC = 1 A; low VBE(sat) = 1.2 V reduces driver power demand. |
| 2 - E | Emitter | Reference node for current flow; connected to ground or low-side return path in common-emitter configurations. |
| 3 - C | Collector | High-current output terminal; thermally coupled to PCB mounting pad (1 cm² recommended) to achieve Rth(j-a) = 278 K/W. |
Key Features
| Feature | Design Value |
|---|---|
| Low VCE(sat) | ≤ 500 mV at rated 1 A load - cuts conduction loss by >40% vs. standard bipolar transistors, enabling smaller heatsinks or higher efficiency in battery systems. |
| AEC-Q101 qualification | Stress-tested per automotive discrete semiconductor standard - validates reliability for engine control, lighting, and infotainment modules. |
| Thermal optimization | Rth(j-a) = 278 K/W with 1 cm² collector pad - allows sustained 1 A operation at ambient up to +105 °C without derating. |
| High hFE stability | hFE ≥ 200 over −55 °C to +150 °C - maintains consistent saturation across automotive temperature extremes and portable device operating ranges. |
Applications
| Automotive Interior Lighting | LCD Backlight Control |
|---|---|
|
Use Scenario: Switching 12 V LED strings in dashboard and center console lighting. IC Role / Device Role / Timing Role: Low-loss NPN switch controlling current path between supply and LED cathodes. Use Value: VCE(sat) ≤ 500 mV limits power dissipation to < 500 mW at 1 A, eliminating need for external heatsinking in space-constrained modules. |
Use Scenario: PWM dimming of white LED arrays in automotive instrument clusters and infotainment displays. IC Role / Device Role / Timing Role: High-speed saturated switch modulating LED current at 1–10 kHz. Use Value: fT = 150 MHz ensures minimal switching delay and clean PWM edges, preserving dimming linearity and reducing EMI. |
| Portable Device Power Management | USB-C Power Path Switching |
|
Use Scenario: Supply-line switching for battery-powered cameras and handheld test equipment. IC Role / Device Role / Timing Role: Load switch isolating main battery from subsystems during standby or fault conditions. Use Value: RCE(sat) = 260 mΩ (typ) enables < 260 mW conduction loss at 1 A, extending runtime and reducing thermal stress on PCB. |
Use Scenario: Directional power path control in dual-role USB-C ports supporting sink/source negotiation. IC Role / Device Role / Timing Role: Low-VCE(sat) NPN switch managing VBUS routing between port controller and PD controller. Use Value: AEC-Q101 qualification and 40 V VCEO support robust operation during USB-C voltage transitions (5 V to 20 V) and transient events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN low-VCE(sat) switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSS40501MR6T1G | VCEO = 40 V, IC = 1.2 A, VCE(sat) = 450 mV (max) at IC = 1 A - slightly lower saturation voltage but no AEC-Q101 certification. | Targeted at industrial and consumer power management; not validated for automotive temperature cycling or humidity testing. | Select when AEC-Q101 is not required and marginally lower VCE(sat) is prioritized over qualification assurance. |
| Diodes Incorporated DXTN40100P5-7 | VCEO = 40 V, IC = 1 A, VCE(sat) = 550 mV (max) at IC = 1 A - higher saturation voltage and Rth(j-a) = 350 K/W (standard FR4). | Designed for cost-sensitive consumer electronics; lacks automotive qualification and thermal performance headroom. | Choose only for non-automotive, low-duty-cycle applications where thermal budget permits higher losses. |
Compared with NSS40501MR6T1G and DXTN40100P5-7, PBSS4140T-QR uniquely combines AEC-Q101 qualification, 278 K/W thermal resistance with optimized layout, and guaranteed ≤500 mV VCE(sat) - making it the only option qualified for continuous 1 A automotive switching with minimal thermal overhead.
Availability
PBSS4140T-QR is available at Aetrix Electronics and suitable for automotive interior lighting, LCD backlight control, and portable device power management requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for PBSS4140T-QR 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 semiconductors, delivering high-performance, reliable components for automotive, industrial, and consumer markets.
PBSS4140T-QR belongs to Nexperia's Automotive-Qualified Low-VCE(sat) Transistor product line, engineered specifically for energy-efficient, thermally robust switching in safety-critical and space-constrained automotive subsystems.
FAQ
Is PBSS4140T-QR pin-compatible with standard SOT23 NPN transistors?
Yes - PBSS4140T-QR uses standard SOT23 pinning: Pin 1 = Base, Pin 2 = Emitter, Pin 3 = Collector. This matches JEDEC TO-236AB and enables drop-in replacement in existing SOT23 footprints designed for NPN switches, provided thermal and electrical margins are verified.
What is the maximum allowable continuous collector current at 105 °C ambient?
At Tamb = 105 °C, the maximum continuous IC is 0.75 A. This is derived from the 450 mW Ptot rating at Tamb ≤ 25 °C and Rth(j-a) = 278 K/W, resulting in Tj = 105 °C + (0.75 A)² × 0.4 Ω × 278 K/W ≈ 149 °C - within the 150 °C Tj(max) limit.
Does PBSS4140T-QR support PWM switching at 20 kHz?
Yes - with fT = 150 MHz and VCE(sat) stable up to 1 A, PBSS4140T-QR fully supports 20 kHz PWM operation. Rise/fall times are < 20 ns (typical), ensuring minimal switching loss and clean duty-cycle fidelity in backlight and motor-control applications.
How does the AEC-Q101 qualification impact its use in non-automotive designs?
AEC-Q101 qualification confirms extended temperature operation (−55 °C to +150 °C), robust HBM ESD tolerance (>2 kV), and accelerated life testing - providing superior reliability margins for industrial, medical, and high-end consumer applications where long service life and field failure avoidance are critical.
PBSS4140T-QR 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:
- NPN
- Current - Collector (Ic) (Max):
- 1 A
- Voltage - Collector Emitter Breakdown (Max):
- 40 V
- Vce Saturation (Max) @ Ib, Ic:
- 500mV @ 100mA, 1A
- Current - Collector Cutoff (Max):
- 100nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 300 @ 500mA, 5V
- Power - Max:
- 300 mW
- Frequency - Transition:
- 150MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PBSS4140T-QR FAQ
1.How can I place an order for PBSS4140T-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for PBSS4140T-QR 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 PBSS4140T-QR reliable?
The price and inventory of PBSS4140T-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBSS4140T-QR is usually 5 days.
3.What payment methods are accepted for PBSS4140T-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBSS4140T-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PBSS4140T-QR?
PBSS4140T-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PBSS4140T-QR 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 PBSS4140T-QR?
For technical support, including PBSS4140T-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBSS4140T-QR requirements.
6.How does Aetrix verify that PBSS4140T-QR is sourced from the original manufacturer or authorized distributors?
All PBSS4140T-QR 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 PBSS4140T-QR meets industry standards.
7.What is the process for return or replacement of PBSS4140T-QR?
All PBSS4140T-QR units undergo pre-shipment inspection (PSI). If there is an issue with PBSS4140T-QR, 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 PBSS4140T-QR part is unused and in its original packaging.
Return procedure for PBSS4140T-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PBSS4140T-QR Tags
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