My Inquiry
My Account
Nexperia USA Inc. PBSS4350PASX
- Part No.:
- PBSS4350PASX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- -
- Datasheet:
-
PBSS4350PASX.pdf
- Description:
- PBSS4350PAS/SOT1061/HUSON3
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PBSS4350PAS from Nexperia is an NPN low VCE(sat) transistor in a DFN2020D-3 (SOT1061D) leadless surface-mount package, rated for 50 V VCEO, 3 A continuous collector current, and 100–130 mΩ RCE(sat) at IC = 2 A / IB = 200 mA. It serves as a high-efficiency load switch in battery-powered power management circuits, delivering minimal conduction loss and reduced thermal footprint.
For engineers reviewing the PBSS4350PAS datasheet, PBSS4350PAS pinout, PBSS4350PAS application, or PBSS4350PAS equivalent, key selection criteria include verified low saturation resistance, thermal performance on FR4 PCBs with side-wettable flanks, AOI-compatibility, and validated PNP complement PBSS5350PAS for complementary switching designs.
Technical Context
This NPN transistor operates as a single-polarity, medium-voltage, high-current switch optimized for DC load control. Its DFN2020D-3 package integrates exposed collector pad for enhanced thermal dissipation and side-wettable flanks enabling automated optical inspection of solder joints.
It exhibits hFE ≥ 100 at IC = 3 A and VCE = 2 V, VCE(sat) ≤ 370 mV at IC = 3 A / IB = 300 mA, and fT = 100 MHz - confirming suitability for fast-switching, low-loss linear and saturated-mode applications up to several hundred kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum safe collector-emitter voltage under open-base conditions; defines upper rail limit in 24 V/36 V industrial and portable systems. |
| IC | 3 A continuous - Sustained DC load current capability without derating at Tamb ≤ 25 °C on standard FR4; supports motor/fan drivers and USB-C PD load switches. |
| RCE(sat) | 100–130 mΩ - Measured at IC = 2 A / IB = 200 mA; enables <100 mW conduction loss, reducing thermal stress vs. legacy TO-236 devices. |
| hFE | ≥100 at IC = 3 A - Ensures reliable saturation with modest base drive (e.g., 30 mA from MCU GPIO), minimizing driver-stage complexity. |
| fT | 100 MHz - Confirms usable gain-bandwidth for fast turn-on/turn-off in PWM-controlled loads up to ~100 kHz with low storage time. |
| Tj(max) | 150 °C - Junction temperature limit enabling operation in sealed enclosures or ambient temperatures up to 85 °C with proper PCB copper area. |
Pinout & Package
DFN2020D-3 (SOT1061D) is a 2 mm × 2 mm × 0.65 mm leadless thermally enhanced plastic package with side-wettable flanks and an exposed collector pad on the bottom surface for direct thermal coupling to PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Control input requiring ~300 mA peak base current for full saturation at 3 A; compatible with 3.3 V/5 V logic-level drive. |
| 2 | Emitter (E) | Reference node tied to system ground or low-side return path; forms common emitter configuration with collector as switched output. |
| 3 | Collector (C) | High-current output terminal connected to load; electrically and thermally coupled to exposed bottom pad for efficient heat transfer to PCB. |
Key Features
| Feature | Design Value |
|---|---|
| Low VCE(sat) | ≤370 mV at 3 A ensures <1.2 W conduction loss, cutting thermal design margin requirements by >40% vs. standard bipolar transistors. |
| Side-wettable flanks | Enables automated optical inspection (AOI) of solder joints without X-ray, improving manufacturing yield and process traceability. |
| Exposed collector pad | Provides <60 K/W thermal resistance to ambient on 4-layer FR4, allowing compact layout without external heatsinks in 1–2 W power stages. |
| Leadless DFN package | Reduces board space by 65% vs. SOT23 and eliminates lead inductance, supporting cleaner switching waveforms in high-frequency load control. |
Applications
| Battery-Powered Load Switch | USB-C Power Delivery Switch |
|---|---|
|
Use Scenario: Controlling power to peripherals (e.g., displays, sensors) in portable medical devices with Li-ion battery input. IC Role / Device Role / Timing Role: NPN low-side switch enabling ON/OFF control via microcontroller GPIO; no timing-critical function, but requires <1 µs turn-off for safe hot-plug sequencing. Use Value: 100 mΩ RCE(sat) limits dropout to <200 mV at 2 A, preserving battery runtime and avoiding brown-out during load activation. |
Use Scenario: Enabling/disabling VBUS path in USB-C source port controllers for compliance with USB PD specification. IC Role / Device Role / Timing Role: High-current, low-loss pass element in VBUS power path; must sustain 3 A continuous with <300 mV drop and support 100 kHz enable toggling. Use Value: Verified 370 mV VCE(sat) at 3 A meets USB PD 3.0 voltage tolerance; side-wettable flanks ensure AOI-verified solder integrity for safety-critical power routing. |
| Motor/Fan Power Switch | Charging Circuit Enable Switch |
|
Use Scenario: Driving 12 V DC cooling fans in industrial gateways where EMI and thermal density are constrained. IC Role / Device Role / Timing Role: Low-side PWM switch operating at 25 kHz; requires low storage time and stable hFE across −40 °C to +85 °C. Use Value: hFE ≥ 100 at 3 A and fT = 100 MHz ensure clean PWM edges and minimal shoot-through risk in half-bridge configurations. |
Use Scenario: Isolating charging IC output from battery during fault conditions (e.g., overvoltage, thermal shutdown) in smart battery packs. IC Role / Device Role / Timing Role: Fail-safe series switch placed between charger IC and cell terminals; must withstand 50 V transient and conduct 3 A continuously. Use Value: 50 V VCEO and 5 A ICM provide 2× safety margin against charger overshoot; exposed pad maintains Tj < 125 °C at full charge current. |
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 | VCEO = 40 V, RCE(sat) = 125 mΩ @ 2 A, SOT-723 package (1.2 × 1.2 mm) | Lower voltage rating and smaller package reduce thermal mass; unsuitable for 48 V systems or >2.5 A sustained loads. | Select only for space-constrained 24 V systems where 40 V margin suffices and board-level thermal relief is available. |
| Diodes Incorporated DXTN3C40PSQ-13 | VCEO = 40 V, RCE(sat) = 95 mΩ @ 2 A, SOT-883 package with wettable flanks | Slightly lower RCE(sat) but same 40 V limit; lacks published hFE data at 3 A, raising uncertainty in saturation assurance. | Prefer when ultra-low RCE(sat) is critical and system voltage stays ≤36 V; verify hFE stability at target IC in prototype. |
Compared with PBSS4350PAS, both alternatives trade off maximum voltage rating (40 V vs. 50 V) for minor RCE(sat) improvements or smaller footprints, making them viable only in lower-voltage, space-limited designs where junction temperature control and AOI reliability are secondary to size.
Availability
PBSS4350PAS is available at Aetrix Electronics and suitable for battery-driven devices, USB-C power delivery modules, and industrial motor control systems requiring stable component supply, consistent parametric performance, and long-term manufacturability.
Supply support for PBSS4350PAS 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, with leadership in logic, discrete, and MOSFET technologies for automotive, industrial, and mobile markets.
PBSS4350PAS belongs to Nexperia's low VCE(sat) bipolar transistor family, engineered specifically for high-efficiency, space-constrained DC load switching in portable and embedded power systems.
FAQ
What is the maximum allowable base current for PBSS4350PAS?
The absolute maximum base current is 0.5 A per datasheet limiting values (Table 5). However, for reliable saturation at IC = 3 A, a pulsed base current of 300 mA is specified - exceeding this risks excessive base-emitter junction heating and accelerated degradation. Continuous base drive should be limited to ≤100 mA unless thermal management is explicitly validated.
Can PBSS4350PAS replace a MOSFET in low-side switching applications?
Yes, but with trade-offs: it offers lower gate-drive complexity than MOSFETs (no gate charge, no level-shifting), yet has higher conduction loss than equivalently rated MOSFETs. Its 100–130 mΩ RCE(sat) is competitive with small-signal MOSFETs, but its fixed VBE ≈ 1.1 V means base drive power scales linearly with current - unlike MOSFET gate capacitance.
Is PBSS4350PAS qualified for automotive applications?
No. The datasheet contains no AEC-Q101 qualification statement, and legal disclaimers explicitly state "Non-automotive qualified products" - meaning it is not tested or warranted for automotive environments. For automotive use, Nexperia's Automotive Qualified (AQ) bipolar portfolio (e.g., PBSS4041PAS-Q) must be selected instead.
How does the DFN2020D-3 package affect PCB layout and thermal design?
The DFN2020D-3 requires precise stencil design for side-wettable flank solder paste deposition and a minimum 1 cm² copper pour connected to the exposed collector pad. Thermal resistance drops from 250 K/W (standard FR4) to 60 K/W (4-layer FR4 + 1 cm² pad), so layout must allocate dedicated thermal copper - not shared with signal traces - to maintain Tj < 125 °C at full load.
PBSS4350PASX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- -
- 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:
- -
- Frequency - Transition:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
PBSS4350PASX FAQ
1.How can I place an order for PBSS4350PASX through Aetrix?
Please submit a Request for Quotation (RFQ) for PBSS4350PASX 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 PBSS4350PASX reliable?
The price and inventory of PBSS4350PASX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBSS4350PASX is usually 5 days.
3.What payment methods are accepted for PBSS4350PASX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBSS4350PASX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PBSS4350PASX?
PBSS4350PASX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PBSS4350PASX 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 PBSS4350PASX?
For technical support, including PBSS4350PASX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBSS4350PASX requirements.
6.How does Aetrix verify that PBSS4350PASX is sourced from the original manufacturer or authorized distributors?
All PBSS4350PASX 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 PBSS4350PASX meets industry standards.
7.What is the process for return or replacement of PBSS4350PASX?
All PBSS4350PASX units undergo pre-shipment inspection (PSI). If there is an issue with PBSS4350PASX, 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 PBSS4350PASX part is unused and in its original packaging.
Return procedure for PBSS4350PASX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PBSS4350PASX Tags
-
MMBT3906LT1G
onsemi
-
MMBT3904-7-F
Diodes Incorporated
-
MMBT3904LT1G
onsemi
-
MMBT3906-7-F
Diodes Incorporated
-
MMBT3904-TP
Micro Commercial Co
-
MMBT2222A-7-F
Diodes Incorporated
-
BC846BLT1G
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
-
MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
-
MMBT2222ALT1G
onsemi
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
