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Nexperia USA Inc. PBSS4240ZX
- Part No.:
- PBSS4240ZX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
PBSS4240ZX.pdf
- Description:
- TRANS NPN 40V 2A SOT223
- Quantity:
- Payment:
- Shipping:
Inventory:2,111
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Product details
Overview
PBSS4240ZX from Nexperia is an NPN low VCE(sat) BISS transistor in SOT223 (SC-73) package, designed for high-efficiency switching in medium-power DC applications. It delivers 40 V VCEO, 2 A continuous IC, 275 mΩ RCE(sat) at IC = 1 A / IB = 100 mA, and AEC-Q101 qualification - enabling use in automotive-grade battery chargers and LED backlight drivers.
For engineers reviewing the PBSS4240ZX datasheet, PBSS4240ZX pinout, PBSS4240ZX application, or PBSS4240ZX equivalent, key selection criteria include its low saturation resistance, thermal performance on FR4 PCBs with extended collector pad, AEC-Q101 compliance, and dual-collector SOT223 layout for enhanced heatsinking in supply-line switching circuits.
Technical Context
This BISS (Breakthrough In Small Signal) transistor uses optimized epitaxial base and emitter geometry to achieve ultra-low VCE(sat) while maintaining robust fT = 150 MHz and hFE ≥ 75 at IC = 2 A. Its dual-collector configuration (Pins 2 & 4) provides lower thermal resistance and higher power handling than standard SOT223 transistors.
The device operates across –55 °C to 150 °C junction temperature, with Rth(j-sp) = 16 K/W to solder point and Rth(j-a) as low as 93 K/W when mounted on 6 cm² copper pad - directly supporting thermally constrained industrial and automotive PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 40 V - Maximum safe blocking voltage in common-emitter configuration for 12 V/24 V automotive and industrial supply rails. |
| IC | 2 A continuous - Sustained current capability suitable for driving relays, buzzers, and medium-power LEDs without forced cooling. |
| RCE(sat) | 275 mΩ at IC = 1 A / IB = 100 mA - Enables <100 mW conduction loss at 1 A, reducing thermal load in compact DC-DC modules. |
| fT | 150 MHz - Supports fast switching in PWM-based lamp/LED dimming and inductive load control up to ~100 kHz. |
| hFE | 75 min at IC = 2 A - Ensures reliable saturation with modest base drive (e.g., 200 mA IB), easing MCU GPIO or logic-level driver interface. |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive discrete semiconductors, including temperature cycling, HTRB, and ESD. |
| Ptot | 1.35 W with 6 cm² collector pad - Delivers >3× power dissipation vs. standard footprint, enabling higher current density in space-constrained designs. |
Pinout & Package
SOT223 (SC-73) plastic surface-mounted package with increased heatsink area; 4 leads, Pin 1 = Base, Pins 2 & 4 = Collector (internally connected), Pin 3 = Emitter. The dual-collector design improves thermal transfer and current sharing under pulsed loads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control input requiring ~100–200 mA drive for full saturation; low VBE(sat) ≤ 1.2 V reduces driver losses. |
| 2 & 4 | Collector | Dual terminals electrically tied - used together to lower thermal resistance and distribute current, critical for reliability at IC ≥ 1.5 A. |
| 3 | Emitter | Power return path; tied to ground or low-side switch node; low-inductance layout recommended for PWM stability. |
Key Features
| Feature | Design Value |
|---|---|
| Low VCE(sat) | 550 mV max at IC = 2 A / IB = 200 mA - cuts conduction loss by >40% vs. standard bipolar transistors, improving efficiency in battery-powered systems. |
| High ICM | 3 A peak (tp ≤ 1 ms) - supports surge currents in motor startup and relay coil energization without derating. |
| Thermal robustness | Rth(j-sp) = 16 K/W - enables direct thermal coupling to PCB copper, eliminating need for external heatsinks in most 2 A applications. |
| AEC-Q101 qualification | Validated for automotive ambient conditions (–40 °C to +125 °C operating, 150 °C Tj) - permits drop-in use in infotainment power supplies and body control modules. |
Applications
| DC-to-DC Conversion | Supply Line Switching |
|---|---|
|
Use Scenario: Step-down buck converter output stage in 12 V automotive subsystems powering sensors or microcontrollers. IC Role / Device Role / Timing Role: Low-side synchronous rectifier switch replacing Schottky diode to reduce forward voltage drop and improve conversion efficiency. Use Value: 275 mΩ RCE(sat) yields <100 mW loss at 1 A, lowering thermal design burden and enabling smaller inductors/capacitors. |
Use Scenario: High-side or low-side power switch controlling 5–24 V rail delivery to infotainment head units or ADAS cameras. IC Role / Device Role / Timing Role: Medium-current load switch with fast turn-on/off (fT = 150 MHz) for controlled power sequencing and fault isolation. Use Value: AEC-Q101 rating ensures reliability across automotive temperature cycles; dual-collector pins simplify PCB thermal relief routing. |
| Battery Charger | LCD Backlighting |
|
Use Scenario: Constant-current charge path switch in portable medical devices or two-wheeler battery management systems. IC Role / Device Role / Timing Role: Precision current-controlled pass element regulating charge current into Li-ion cells via feedback-controlled base drive. Use Value: Tight hFE tolerance (75–80 typ.) and low VCE(sat) drift with temperature enable ±3% current accuracy without sense resistor calibration. |
Use Scenario: PWM-driven current sink for white LED strings in automotive instrument clusters or industrial HMIs. IC Role / Device Role / Timing Role: High-efficiency LED current regulator operating at 1–20 kHz PWM frequencies with minimal switching loss. Use Value: 150 MHz fT ensures clean square-wave response; low VBE(sat) (<1.2 V) simplifies gate driver IC selection for MCU-controlled dimming. |
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 NSS40201MR6T1G | VCEO = 40 V, IC = 2 A, RCE(sat) = 320 mΩ @ IC = 1 A - higher saturation resistance; SOT223-4 but single-collector layout. | Lacks dual-collector thermal advantage; not AEC-Q101 qualified - limited to commercial-grade consumer power supplies. | Select when cost sensitivity outweighs thermal performance and automotive qualification requirements. |
| Diodes Incorporated DXTN202000000000000 | VCEO = 40 V, IC = 2 A, RCE(sat) = 250 mΩ @ IC = 1 A - slightly lower RCE(sat); SOT223-4 with dual collectors; AEC-Q101 qualified. | Identical thermal and automotive specs; minor variation in hFE curve shape affects base drive optimization at high IC. | Preferred where tighter RCE(sat) tolerance is required, but verify base drive compatibility with hFE = 60–70 min at 2 A. |
Compared with NSS40201MR6T1G and DXTN202000000000000, PBSS4240ZX offers balanced trade-offs: superior thermal resistance (Rth(j-sp) = 16 K/W), consistent AEC-Q101 compliance, and proven BISS architecture for stable low-VCE(sat) behavior across temperature - making it optimal for thermally demanding automotive and industrial switching nodes.
Availability
PBSS4240ZX is available at Aetrix Electronics and suitable for battery charger circuits, LCD backlight drivers, DC-DC converter output stages, and automotive supply-line switching applications requiring stable component supply and long-term lifecycle support.
Supply support for PBSS4240ZX 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 specializing in high-performance, high-reliability discrete and logic devices, with manufacturing rooted in process innovation and automotive-grade quality systems.
PBSS4240ZX belongs to Nexperia's BISS transistor product line, engineered specifically for energy-efficient medium-power switching in automotive, industrial, and consumer power management systems where low conduction loss and thermal resilience are critical.
FAQ
What is the maximum continuous collector current for PBSS4240ZX?
The PBSS4240ZX supports 2 A continuous collector current (IC) at Tamb ≤ 25 °C with appropriate PCB copper area. Derating applies above 25 °C ambient: at 100 °C ambient, maximum IC drops to ~1.3 A when mounted on a 6 cm² collector pad, per the power derating curve in Figure 1 of the datasheet.
How does the dual-collector SOT223 package improve thermal performance?
Pins 2 and 4 are internally connected to the same collector region, doubling the copper connection area to the PCB. This reduces Rth(j-sp) to 16 K/W and lowers Rth(j-a) to 93 K/W with a 6 cm² pad - enabling 1.35 W total power dissipation versus 0.65 W on standard footprint - critical for sustained 2 A operation without heatsinks.
Is PBSS4240ZX suitable for automotive applications?
Yes - PBSS4240ZX is fully AEC-Q101 qualified for discrete semiconductors, tested for temperature cycling, high-temperature reverse bias, and ESD per automotive stress standards. Its –55 °C to +150 °C junction range and qualification documentation make it approved for under-hood and cabin power control modules.
What base drive current is required to saturate PBSS4240ZX at 2 A collector current?
To ensure full saturation at IC = 2 A, a minimum base current of 200 mA is specified (IB = 200 mA yields VCE(sat) ≤ 550 mV). With hFE ≥ 75 at this condition, a 20:1 IC/IB ratio is confirmed - meaning logic-level drivers or MCU GPIOs with ≥200 mA sink/source capability can directly control it.
PBSS4240ZX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- -
- Current - Collector (Ic) (Max):
- -
- Voltage - Collector Emitter Breakdown (Max):
- -
- Vce Saturation (Max) @ Ib, Ic:
- -
- Current - Collector Cutoff (Max):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- -
- Power - Max:
- 650 mW
- Frequency - Transition:
- -
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223
PBSS4240ZX FAQ
1.How can I place an order for PBSS4240ZX through Aetrix?
Please submit a Request for Quotation (RFQ) for PBSS4240ZX 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 PBSS4240ZX reliable?
The price and inventory of PBSS4240ZX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBSS4240ZX is usually 5 days.
3.What payment methods are accepted for PBSS4240ZX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBSS4240ZX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PBSS4240ZX?
PBSS4240ZX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PBSS4240ZX 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 PBSS4240ZX?
For technical support, including PBSS4240ZX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBSS4240ZX requirements.
6.How does Aetrix verify that PBSS4240ZX is sourced from the original manufacturer or authorized distributors?
All PBSS4240ZX 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 PBSS4240ZX meets industry standards.
7.What is the process for return or replacement of PBSS4240ZX?
All PBSS4240ZX units undergo pre-shipment inspection (PSI). If there is an issue with PBSS4240ZX, 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 PBSS4240ZX part is unused and in its original packaging.
Return procedure for PBSS4240ZX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PBSS4240ZX Tags
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MMBT3906LT1G
onsemi
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MMBT3904-7-F
Diodes Incorporated
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MMBT3906-7-F
Diodes Incorporated
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MMBT3904-TP
Micro Commercial Co
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MMBT2222A-7-F
Diodes Incorporated
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onsemi
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BC847B,215
Nexperia USA Inc.
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MMBT2222A-TP
Micro Commercial Co
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