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Nexperia USA Inc. PBSS4140U,115
- Part No.:
- PBSS4140U,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PBSS4140U,115.pdf
- Description:
- TRANS NPN 40V 1A SOT-323
- Quantity:
- Payment:
- Shipping:
Inventory:1,648
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Product details
Overview
PBSS4140U,115 from Nexperia is a 40 V, 1 A low VCE(sat) NPN transistor in SOT323 (SC-70) package, optimized for high-efficiency switching in battery-powered devices. It delivers RCE(sat) = 260 mΩ typ at IC = 500 mA / IB = 50 mA, supports peak IC = 2 A, and is AEC-Q101 qualified for automotive-grade reliability in supply-line switching and LCD backlighting circuits.
For engineers reviewing the PBSS4140U,115 datasheet, PBSS4140U,115 pinout, PBSS4140U,115 application, or PBSS4140U,115 equivalent, key selection criteria include verified VCE(sat) performance at 500 mA, thermal resistance (Rth(j-a) = 357 K/W with 1 cm² collector pad), SOT323 footprint compatibility, and AEC-Q101 qualification status for industrial and automotive designs.
Technical Context
This discrete NPN transistor operates as a saturated switch with fixed current gain (hFE = 300–900 at IC = 500 mA, VCE = 5 V, Tamb = 25 °C) and exhibits low thermal resistance due to its optimized SOT323 copper pad layout. Its VCE(sat) remains stable across −55 °C to 150 °C junction temperature range, enabling robust operation in portable and automotive environments.
The device uses standard bipolar junction architecture with defined absolute maximum ratings: VCEO = 40 V, VEBO = 5 V, Ptot = 350 mW (with enhanced pad), and ICM = 2 A pulsed. Its fT = 150 MHz supports fast switching up to ~10 MHz practical frequencies in DC-DC and load-switching applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 40 V - Maximum allowable collector-emitter voltage with base open; defines safe operating voltage ceiling for supply-line switching. |
| IC | 1 A continuous - Rated collector current under steady-state conditions; supports typical load currents in handheld device power rails. |
| RCE(sat) | 260 mΩ typ at IC = 500 mA / IB = 50 mA - Low on-resistance reduces conduction loss and self-heating in battery-driven equipment. |
| hFE | 300–900 at IC = 500 mA - High DC current gain enables efficient drive with low base current, easing MCU GPIO interface design. |
| fT | 150 MHz - Transition frequency confirms suitability for medium-speed switching (e.g., PWM dimming up to 10 MHz). |
| AEC-Q101 | Qualified - Validated for automotive temperature, humidity, and mechanical stress requirements; suitable for under-hood and infotainment subsystems. |
Pinout & Package
Package: SOT323 (SC-70), surface-mount plastic package with 1.3 mm × 1.8 mm footprint and 0.95 mm height; optimized for reflow soldering with 1 cm² collector thermal pad per JEDEC MS-012.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Control input requiring ~50 mA base drive for full saturation at 500 mA collector load; low VBE(sat) = 1.2 V max ensures minimal driver overhead. |
| 2 | Emitter (E) | Reference node tied to system ground or low-side return path; forms common-emitter configuration with defined VEBO = 5 V limit. |
| 3 | Collector (C) | High-current output terminal connected to load or supply rail; thermally coupled to PCB pad for Rth(j-a) = 357 K/W performance. |
Key Features
| Feature | Design Value |
|---|---|
| Low VCE(sat) | 250 mV max at IC = 500 mA / IB = 50 mA - Reduces power dissipation by >40% vs. standard SOT23 transistors in same bias condition. |
| Thermal enhancement | Rth(j-a) = 357 K/W with 1 cm² collector pad - Enables 350 mW power handling without derating in compact layouts. |
| AEC-Q101 qualification | Validated per automotive stress test standards - Supports deployment in automotive body electronics without additional qualification effort. |
| High hFE consistency | Min 300 at IC = 500 mA - Ensures reliable turn-on margin across temperature and process variation for deterministic switching. |
Applications
| Mobile Phone Power Management | LCD Backlight Control |
|---|---|
Use Scenario: Switching main battery voltage (3.7 V) to enable/disable camera flash or audio amplifier rails. IC Role / Device Role / Timing Role: Low-side saturated switch controlling power delivery with <1 µs turn-on/turn-off delay. Use Value: 260 mΩ RCE(sat) limits voltage drop to <130 mV at 500 mA, preserving battery runtime and minimizing thermal rise in tight spaces. |
Use Scenario: PWM-controlled current sink for white LED strings in smartphone displays. IC Role / Device Role / Timing Role: Constant-current switch modulated at 1–5 kHz to regulate brightness without audible noise. Use Value: Stable hFE and low VCE(sat) ensure consistent LED current across temperature, eliminating brightness drift during extended use. |
| Automotive Infotainment Supply Switch | Handheld Medical Device Load Control |
Use Scenario: Enabling 5 V USB-C accessory power rail in car head units with reverse-polarity protection. IC Role / Device Role / Timing Role: High-reliability load switch meeting AEC-Q101 for vibration, thermal cycling, and ESD immunity. Use Value: AEC-Q101 qualification and 150 °C Tj(max) support uninterrupted operation in dashboard-mounted systems exposed to ambient extremes. |
Use Scenario: Isolating sensor analog front-end from main processor supply during sleep mode in portable glucose meters. IC Role / Device Role / Timing Role: Precision low-leakage switch (ICEO = 100 nA max) minimizing standby current drain. Use Value: Ultra-low ICEO and VCE(sat) stability extend single-cell CR2032 battery life beyond 12 months in intermittent-use medical instruments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low VCE(sat) NPN switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSS40501MR6T1G | VCEO = 40 V, IC = 1 A, RCE(sat) = 300 mΩ typ (IC = 500 mA), SOT-723 package (smaller than SOT323) | SOT-723 footprint requires PCB redesign; lower thermal mass limits sustained 1 A operation without heatsinking | Select if board space is constrained and thermal load is intermittent; verify layout compatibility with 1.2 mm × 1.2 mm outline. |
| Diodes Incorporated DXT4140TQ-7 | VCEO = 40 V, IC = 1 A, RCE(sat) = 280 mΩ typ (IC = 500 mA), AEC-Q101 qualified, SOT323 package | Identical footprint and qualification level; hFE min = 200 (vs. 300 for PBSS4140U) at same bias point | Drop-in replacement where gain margin is acceptable; preferred when dual-sourcing is required for supply chain resilience. |
Compared with NSS40501MR6T1G and DXT4140TQ-7, PBSS4140U,115 offers superior hFE consistency and lowest RCE(sat), making it optimal for high-reliability, thermally constrained designs where drive efficiency and thermal margin are critical.
Availability
PBSS4140U,115 is available at Aetrix Electronics and suitable for mobile phone power management, LCD backlight control, and automotive infotainment supply switching requiring stable component supply and AEC-Q101 compliance.
Supply support for PBSS4140U,115 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.
PBSS4140U,115 belongs to Nexperia's Low VCE(sat) Transistor product line, engineered specifically for high-efficiency load switching in space-constrained, battery-sensitive applications such as portable consumer electronics and automotive body control modules.
FAQ
What is the maximum continuous collector current for PBSS4140U,115 at 25 °C ambient?
The maximum continuous collector current is 1 A, specified at Tamb ≤ 25 °C with proper PCB thermal management (1 cm² collector pad). At higher ambient temperatures or reduced copper area, derating applies per the thermal resistance curve: Rth(j-a) = 357 K/W with enhanced pad, rising to 500 K/W on standard FR4.
Is PBSS4140U,115 suitable for linear (non-saturated) amplifier operation?
No - PBSS4140U,115 is optimized for saturated switching, not linear amplification. Its hFE variation above 100 mA and lack of small-signal linearity characterization (e.g., fT only specified at 50 mA) make it unsuitable for analog gain stages. Use dedicated RF or general-purpose amplifiers instead.
How does the SOT323 package compare thermally to SOT23 for this device?
The SOT323 package used in PBSS4140U,115 provides 25% lower Rth(j-a) (357 K/W vs. ~475 K/W for standard SOT23) when mounted with a 1 cm² collector pad, due to improved copper exposure and thinner mold compound. This enables 30% higher sustained current capability in identical PCB layouts.
Can PBSS4140U,115 replace a standard general-purpose transistor like BC847 in existing designs?
Yes, but only in saturated switching roles - not as a direct functional substitute in linear or high-voltage applications. Its VCEO = 40 V matches BC847B, but PBSS4140U,115 offers 3× lower RCE(sat) and AEC-Q101 qualification. Layout must accommodate SOT323 pinout (B-E-C vs. BC847's E-B-C), and base drive must be scaled for higher hFE.
PBSS4140U,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- 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:
- 350 mW
- Frequency - Transition:
- 150MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
PBSS4140U,115 FAQ
1.How can I place an order for PBSS4140U,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PBSS4140U,115 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 PBSS4140U,115 reliable?
The price and inventory of PBSS4140U,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBSS4140U,115 is usually 5 days.
3.What payment methods are accepted for PBSS4140U,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBSS4140U,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PBSS4140U,115?
PBSS4140U,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PBSS4140U,115 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 PBSS4140U,115?
For technical support, including PBSS4140U,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBSS4140U,115 requirements.
6.How does Aetrix verify that PBSS4140U,115 is sourced from the original manufacturer or authorized distributors?
All PBSS4140U,115 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 PBSS4140U,115 meets industry standards.
7.What is the process for return or replacement of PBSS4140U,115?
All PBSS4140U,115 units undergo pre-shipment inspection (PSI). If there is an issue with PBSS4140U,115, 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 PBSS4140U,115 part is unused and in its original packaging.
Return procedure for PBSS4140U,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PBSS4140U,115 Tags
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MMBT3906LT1G
onsemi
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MMBT3904-7-F
Diodes Incorporated
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MMBT3904LT1G
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MMBT3906-7-F
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MMBT3904-TP
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MMBT2222A-7-F
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BC846BLT1G
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BC847B,215
Nexperia USA Inc.
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