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Nexperia USA Inc. PBSS4021NZ,115
- Part No.:
- PBSS4021NZ,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
PBSS4021NZ,115.pdf
- Description:
- TRANS NPN 20V 8A SOT-223
- Quantity:
- Payment:
- Shipping:
Inventory:2,391
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Product details
Overview
PBSS4021NZ from Nexperia is an AEC-Q101-qualified NPN low VCE(sat) transistor in SOT223 (SC-73) package, rated for 20 V VCEO, 8 A continuous collector current, and 14 mΩ typical RCE(sat) at IC = 6 A. It serves as a high-efficiency load switch in automotive power management and battery-driven motor control circuits.
For engineers reviewing the PBSS4021NZ datasheet, PBSS4021NZ pinout, PBSS4021NZ application, or PBSS4021NZ equivalent, key selection criteria include its ultra-low saturation resistance, AEC-Q101 qualification, thermal performance on FR4 PCBs, and dual-collector pin configuration enabling enhanced heatsinking in compact layouts.
Technical Context
This NPN transistor employs optimized epitaxial base design to achieve VCE(sat) as low as 120 mV at IC = 8 A / IB = 400 mA and hFE ≥ 250 at IC = 8 A. Its dual-collector terminal (Pins 2 & 4) provides parallel current paths and improved thermal conduction to the PCB copper pour.
The device operates with VBE(sat) ≤ 1.05 V at IC = 4 A / IB = 400 mA and delivers fT = 90 MHz, supporting fast switching in DC-DC converters and PWM-driven loads. Thermal resistance Rth(j-sp) is 11 K/W, enabling reliable operation up to Tj = 150 °C under defined board-mount conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 20 V - Maximum safe collector-emitter voltage with base open; defines maximum supply rail compatibility in 12 V automotive systems. |
| IC | 8 A - Continuous DC collector current rating; supports high-current load switching without forced air cooling on standard FR4 PCBs. |
| RCE(sat) | 14 mΩ typ - Low saturation resistance reduces conduction loss to ≤ 672 mW at 8 A, minimizing thermal stress and PCB area. |
| hFE | 250–480 - High DC current gain at high IC; enables efficient drive with modest base current (e.g., 400 mA for 8 A output). |
| toff | 605 ns - Fast turn-off time ensures clean PWM edge control in motor drivers and synchronous rectifiers. |
| Rth(j-sp) | 11 K/W - Junction-to-solder-point thermal resistance; allows direct thermal coupling to large copper pads for passive heatsinking. |
Pinout & Package
SOT223 (SC-73) plastic surface-mount package with 4 leads, 2.3 mm pitch, and integrated heatsink pad (Pin 2 & Pin 4 both connected to collector). Body dimensions: 6.5 mm × 3.5 mm × 1.65 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control input requiring ~400 mA base drive for full 8 A conduction; low VBE(sat) minimizes driver loss. |
| 2 | Collector | Main high-current output path; electrically tied to Pin 4 for doubled current capacity and enhanced thermal transfer. |
| 3 | Emiter | Reference node for load return path; placed adjacent to base for compact gate-drive loop layout. |
| 4 | Collector | Secondary collector terminal; used with Pin 2 to distribute current and improve solder-joint reliability under thermal cycling. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood applications including temperature cycling, humidity, and mechanical shock per JESD22 standards. |
| Dual-collector SOT223 footprint | Enables 2× current handling and 30% lower thermal resistance vs. standard 3-pin SOT223 by doubling copper connection area. |
| 14 mΩ RCE(sat) @ 6 A | Reduces power dissipation by >40% compared to conventional transistors, allowing smaller heatsinks or higher ambient operating temperatures. |
| hFE ≥ 250 @ IC = 8 A | Permits use of low-power microcontroller GPIO or small driver ICs without external amplification stages. |
| 11 K/W Rth(j-sp) | Supports junction temperatures up to 150 °C with ≤ 1.7 W total power dissipation on 4-layer FR4 PCBs using standard layout practices. |
Applications
| Automotive Load Switch | Battery-Powered Motor Control |
|---|---|
Use Scenario: High-side switching of HVAC blower motors and seat adjusters in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: NPN power switch controlling 5–8 A DC loads with PWM duty cycle modulation. Use Value: Low 120 mV VCE(sat) limits heat generation to <1 W, eliminating need for discrete heatsinks in space-constrained modules. |
Use Scenario: Bidirectional DC motor drive half-bridge in portable power tools and robotic actuators. IC Role / Device Role / Timing Role: Low-side switching element with 605 ns toff enabling 20 kHz+ PWM frequency for smooth torque control. Use Value: Dual-collector thermal path sustains 8 A peak current during stall conditions without derating at 85 °C ambient. |
| USB-C Power Delivery Switch | Industrial Charging Circuit |
Use Scenario: Inrush current limiting and overcurrent protection in 20 V/5 A USB PD 3.1 sink applications. IC Role / Device Role / Timing Role: Fast-turning load switch activated by MCU-controlled base drive to manage hot-plug events. Use Value: 70 ns td and 40 ns tr ensure precise timing alignment with system fault detection logic for sub-100 µs response. |
Use Scenario: Constant-current regulation stage in multi-cell Li-ion battery chargers for medical devices. IC Role / Device Role / Timing Role: Precision current-pass element in linear or hybrid switching-linear charging topologies. Use Value: Tight VCE(sat) tolerance (120–170 mV) enables ±2% current accuracy without closed-loop sensing in cost-sensitive designs. |
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 NSS40201LT1G | 20 V VCEO, 4.5 A IC, 25 mΩ RCE(sat), SOT23-3 package | Lower current rating and no dual-collector thermal enhancement; suited for space-constrained but lower-power loads. | Select when board area is critical and peak load current remains ≤ 4.5 A; not suitable for automotive underhood thermal profiles. |
| Diodes Incorporated DXTN20020CTR | 20 V VCEO, 10 A IC, 12 mΩ RCE(sat), SOT223-4 package, non-AEC-Q101 | Higher current capability and marginally lower RCE(sat), but lacks automotive qualification and has different hFE profile. | Prefer for industrial power supplies where AEC-Q101 is unnecessary and 10 A headroom justifies requalification effort. |
Compared with NSS40201LT1G, PBSS4021NZ delivers double the current and 40% lower conduction loss in the same footprint class; versus DXTN20020CTR, it trades marginal RCE(sat) improvement for guaranteed automotive reliability and tighter parametric consistency across temperature.
Availability
PBSS4021NZ is available at Aetrix Electronics and suitable for automotive load switching, battery-powered motor control, and industrial charging circuits requiring stable component supply, AEC-Q101 compliance, and high thermal robustness in SMT production.
Supply support for PBSS4021NZ 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 for automotive, industrial, and consumer markets.
PBSS4021NZ belongs to Nexperia's Automotive Logic and Power portfolio, engineered specifically for high-efficiency, thermally constrained switching in 12 V and 24 V vehicle subsystems and portable power equipment.
FAQ
What is the maximum allowable base current for PBSS4021NZ?
The absolute maximum base current is 1 A per datasheet Table 5. However, for reliable 8 A collector conduction, the recommended base drive is 400 mA (IC/IB = 20), delivering VCE(sat) ≤ 170 mV while maintaining hFE stability and avoiding excessive base-emitter junction heating.
Can PBSS4021NZ be used in high-frequency switching applications above 100 kHz?
Yes - with fT = 90 MHz and toff = 605 ns, PBSS4021NZ supports PWM frequencies up to 500 kHz in hard-switched configurations. Layout must minimize base-collector loop inductance and use dedicated ground planes to preserve switching integrity.
How does the dual-collector configuration affect PCB layout?
Pins 2 and 4 must be routed to the same net and connected to a shared thermal pad (≥ 6 cm² on single-layer FR4 or ≥ 1 cm² on 4-layer boards). This configuration requires symmetric copper pours and avoids thermal imbalance that could cause solder joint fatigue during power cycling.
Is PBSS4021NZ compatible with lead-free reflow profiles?
Yes - the SC-73 package is qualified for JEDEC J-STD-020D-compliant lead-free reflow, with peak temperature up to 260 °C. Figure 20 specifies the recommended reflow footprint: 4.6 mm × 2.3 mm solder land with 0.3 mm stencil aperture for optimal void control and thermal pad wetting.
PBSS4021NZ,115 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:
- NPN
- Current - Collector (Ic) (Max):
- 8 A
- Voltage - Collector Emitter Breakdown (Max):
- 20 V
- Vce Saturation (Max) @ Ib, Ic:
- 170mV @ 400mA, 8A
- Current - Collector Cutoff (Max):
- 100nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 250 @ 4A, 2V
- Power - Max:
- 2.6 W
- Frequency - Transition:
- 95MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223
PBSS4021NZ,115 FAQ
1.How can I place an order for PBSS4021NZ,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PBSS4021NZ,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 PBSS4021NZ,115 reliable?
The price and inventory of PBSS4021NZ,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBSS4021NZ,115 is usually 5 days.
3.What payment methods are accepted for PBSS4021NZ,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBSS4021NZ,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PBSS4021NZ,115?
PBSS4021NZ,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PBSS4021NZ,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 PBSS4021NZ,115?
For technical support, including PBSS4021NZ,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBSS4021NZ,115 requirements.
6.How does Aetrix verify that PBSS4021NZ,115 is sourced from the original manufacturer or authorized distributors?
All PBSS4021NZ,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 PBSS4021NZ,115 meets industry standards.
7.What is the process for return or replacement of PBSS4021NZ,115?
All PBSS4021NZ,115 units undergo pre-shipment inspection (PSI). If there is an issue with PBSS4021NZ,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 PBSS4021NZ,115 part is unused and in its original packaging.
Return procedure for PBSS4021NZ,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PBSS4021NZ,115 Tags
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Diodes Incorporated
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Nexperia USA Inc.
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