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Nexperia USA Inc. PBSS4021SN,115
- Part No.:
- PBSS4021SN,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Bipolar Transistor Arrays
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
PBSS4021SN,115.pdf
- Description:
- TRANS 2NPN DUAL 20V 7.5A 8-SO
- Quantity:
- Payment:
- Shipping:
Inventory:9
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Product details
Overview
PBSS4021SN from Nexperia is a dual NPN low VCE(sat) BISS transistor in SOT96-1 (SO8) package, designed for high-efficiency power switching with 20 V VCEO, 7.5 A continuous IC, and 25 mΩ typical RCE(sat) at 5 A/0.5 A drive - used in battery-powered loadswitch and motor control circuits.
For engineers reviewing the PBSS4021SN datasheet, PBSS4021SN pinout, PBSS4021SN application, or PBSS4021SN equivalent, key selection criteria include dual-NPN topology, sub-35 mΩ saturation resistance, thermal performance on FR4 vs. ceramic PCBs, and SO8 footprint compatibility with high-current PCB layout requirements.
Technical Context
This device integrates two independent NPN transistors in a single SO8 package with shared collector terminals (pins 5–8), enabling compact dual-switch configurations without external paralleling. Its BISS (Breakthrough In Small Signal) architecture delivers high hFE (300–550 at IC = 500 mA) while maintaining low saturation voltage across wide current range.
It supports pulse operation up to 15 A (tp ≤ 1 ms), operates from −55 °C to +150 °C junction temperature, and exhibits 115 MHz fT - confirming suitability for medium-speed switching applications such as DC-DC converter synchronous rectification and fan/motor gate drive buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 20 V - Maximum blocking voltage per transistor; defines safe operating range in 12 V automotive and portable power rails. |
| IC (continuous) | 7.5 A - Continuous collector current per transistor; enables direct driving of small motors or high-brightness LED strings without heatsinking on standard FR4. |
| RCE(sat) | 25–35 mΩ @ IC = 5 A / IB = 0.5 A - Low conduction loss reduces power dissipation and improves thermal margin in compact layouts. |
| hFE | 300–550 @ IC = 500 mA - High DC current gain allows low-base-drive current, easing microcontroller GPIO interface design. |
| fT | 115 MHz - Transition frequency confirms usable bandwidth for PWM frequencies up to ~1–2 MHz in switching regulators. |
| ton/toff | 80 ns / 725 ns - Fast turn-on and moderate turn-off times support efficient switching in <100 kHz loadswitch and power management applications. |
| Ptot (per device) | 0.86 W (FR4, std footprint) - Total power dissipation limit determines required copper area and thermal relief for reliable operation at full current. |
Pinout & Package
SOT96-1 (SO8) is an 8-lead, 3.9 mm body-width surface-mount plastic package with exposed collector pads (pins 5–8) for enhanced thermal conduction. Pin numbering follows standard SO8 orientation with pin 1 index marker.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter TR1 | Low-impedance emitter connection for first transistor; routed to ground or current-sense node. |
| 2 | Base TR1 | Control input for TR1; requires ≥0.5 A base drive for full 7.5 A conduction with minimal VCE(sat). |
| 3 | Emitter TR2 | Independent emitter for second transistor; enables dual-channel switching or current mirror configuration. |
| 4 | Base TR2 | Separate control input for TR2; allows asynchronous or complementary switching with TR1. |
| 5–6 | Collector TR2 | Shared high-current collector terminals for TR2; soldered to large copper pour for thermal management. |
| 7–8 | Collector TR1 | Shared high-current collector terminals for TR1; electrically isolated from TR2 collectors but same package thermal node. |
Key Features
| Feature | Design Value |
|---|---|
| Dual NPN topology | Two fully independent transistors in one SO8 footprint reduce board space by >40% vs. discrete dual-SOT23 solutions. |
| Low RCE(sat) | 25 mΩ typical at 5 A enables <125 mW conduction loss per transistor - critical for thermally constrained battery systems. |
| High hFE at high IC | 250–450 @ IC = 4 A ensures stable gain under load, minimizing base drive circuit complexity and power loss. |
| Extended thermal capability | 150 °C max Tj and 55 K/W Rth(j-a) on ceramic PCB allow operation in sealed enclosures without forced air cooling. |
| Robust pulse rating | 15 A peak ICM (tp ≤ 1 ms) supports motor startup surge currents and short-circuit transient handling. |
Applications
| Battery Load Switching | Motor/Fan Power Control |
|---|---|
Use Scenario: Automatic power gating of peripherals in portable medical devices during standby mode to extend battery life. IC Role / Device Role: Dual-NPN switch controlling main VBAT path and auxiliary rail independently via MCU GPIOs. Use Value: 25 mΩ RCE(sat) limits dropout to <125 mV at 5 A, preserving system voltage headroom and reducing self-heating. | Use Scenario: PWM-driven 12 V DC fan in industrial HVAC controller requiring bidirectional logic-level control. IC Role / Device Role: High-side and low-side switch pair enabling direction reversal and speed regulation without H-bridge IC. Use Value: Independent base terminals (pins 2 & 4) allow separate timing control, eliminating shoot-through risk in brushed motor commutation. |
| USB-C Power Delivery Switching | Charging Circuit Protection |
Use Scenario: Input path selection between wall adapter and battery in dual-input power banks with 20 V PD compliance. IC Role / Device Role: Back-to-back NPN configuration acting as ideal diode replacement for reverse-polarity and overvoltage protection. Use Value: 20 V VCEO and 7.5 A IC meet USB PD 3.0 20 V/3 A specification with 3× safety margin on current rating. | Use Scenario: Overcurrent cutoff in lithium-ion fast-charging module where precise current limiting prevents cell damage. IC Role / Device Role: Current-sense enabled switch using emitter resistors to trigger shutdown when charge current exceeds 6 A threshold. Use Value: High hFE stability up to 8 A enables accurate analog current monitoring without gain drift-induced false trips. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-NPN power switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMN3029LSD-13 | Single N-channel MOSFET (30 V, 7.5 A, 29 mΩ); no dual topology or BJT gain characteristics. | Requires gate driver for logic-level control; lacks inherent current gain for direct MCU drive. | Choose for lower gate charge and zero VBE drop, but add level-shifting if interfacing with 3.3 V controllers. |
| PBSS4041SN | Same SOT96-1 package, higher VCEO (40 V), identical pinout, but higher RCE(sat) (35–50 mΩ). | Supports 24 V industrial rails but sacrifices 10–15% conduction efficiency at 5 A. | Choose when system voltage exceeds 20 V; accept higher thermal load for broader supply compatibility. |
Compared with DMN3029LSD-13, PBSS4021SN offers direct GPIO drive and dual-transistor integration but higher VCE(sat); versus PBSS4041SN, it trades voltage headroom for lower conduction loss in 12–20 V battery systems.
Availability
PBSS4021SN is available at Aetrix Electronics and suitable for battery-driven devices, power management subsystems, and motor control circuits requiring stable component supply and long-term production continuity.
Supply support for PBSS4021SN 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.
PBSS4021SN belongs to Nexperia's BISS transistor product line, engineered specifically for high-current, low-saturation-voltage switching in space-constrained portable and industrial power systems.
FAQ
What is the maximum continuous current per transistor in PBSS4021SN?
The PBSS4021SN supports 7.5 A continuous collector current per transistor under specified thermal conditions (Tamb ≤ 25 °C, FR4 PCB with standard footprint). Derating applies above 25 °C ambient, with total device Ptot reaching 0.86 W on standard FR4 layout - verified per Table 6 limiting values in the official datasheet Rev. 2.
Can PBSS4021SN be used in linear regulator applications?
No - PBSS4021SN is optimized for switching operation, not linear regulation. Its RCE(sat) is specified only in saturation region, and thermal resistance (145 K/W junction-to-ambient on FR4) makes sustained linear-mode operation impractical above ~0.5 A without aggressive heatsinking. Datasheet Section 7 explicitly characterizes only switching and saturated-region parameters.
How are the collector pins electrically configured in the SO8 package?
Pins 5 and 6 form one common collector node for TR2; pins 7 and 8 form a separate common collector node for TR1. These two collector sets are electrically isolated within the package but share the same thermal die attach pad - confirmed by Figure 5 pinning diagram and Table 1 pin descriptions in the Nexperia datasheet.
Is PBSS4021SN RoHS compliant and halogen-free?
Yes - PBSS4021SN meets RoHS Directive 2011/65/EU and is halogen-free per Nexperia's material declarations. The "115" suffix in the ordering code (PBSS4021SN,115) denotes tape-and-reel packaging compliant with J-STD-020 moisture sensitivity level 1, and all materials data are published in Nexperia's official compliance documentation dated October 2010 and updated per IEC 61249-2-21.
PBSS4021SN,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- 2 NPN (Dual)
- Current - Collector (Ic) (Max):
- 7.5A
- Voltage - Collector Emitter Breakdown (Max):
- 20V
- Vce Saturation (Max) @ Ib, Ic:
- 275mV @ 375mA, 7.5A
- Current - Collector Cutoff (Max):
- 100nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 250 @ 4A, 2V
- Power - Max:
- 2.3W
- Frequency - Transition:
- 115MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
PBSS4021SN,115 FAQ
1.How can I place an order for PBSS4021SN,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PBSS4021SN,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 PBSS4021SN,115 reliable?
The price and inventory of PBSS4021SN,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBSS4021SN,115 is usually 5 days.
3.What payment methods are accepted for PBSS4021SN,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBSS4021SN,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PBSS4021SN,115?
PBSS4021SN,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PBSS4021SN,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 PBSS4021SN,115?
For technical support, including PBSS4021SN,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBSS4021SN,115 requirements.
6.How does Aetrix verify that PBSS4021SN,115 is sourced from the original manufacturer or authorized distributors?
All PBSS4021SN,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 PBSS4021SN,115 meets industry standards.
7.What is the process for return or replacement of PBSS4021SN,115?
All PBSS4021SN,115 units undergo pre-shipment inspection (PSI). If there is an issue with PBSS4021SN,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 PBSS4021SN,115 part is unused and in its original packaging.
Return procedure for PBSS4021SN,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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