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Nexperia USA Inc. PBSS4520X,146
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- Part No.:
- PBSS4520X,146
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
PBSS4520X,146.pdf
- Description:
- TRANS NPN 20V 5A SOT-89
- Quantity:
- Payment:
- Shipping:
Inventory:3,231
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Product details
Overview
PBSS4520X,146 from Nexperia is a 20 V, 5 A NPN low-VCE(sat) transistor in SOT89 package, designed as a high-efficiency medium-power switch for DC-DC conversion, motor/fan drivers, and strobe flash units. It delivers RCE(sat) = 32–44 mΩ at IC = 5 A / IB = 500 mA (pulsed), hFE = 200–380 at IC = 5 A, and operates up to Tj = 150 °C.
For engineers reviewing the PBSS4520X,146 datasheet, PBSS4520X,146 pinout, PBSS4520X,146 application, or PBSS4520X,146 equivalent, key selection criteria include verified low saturation resistance under high-current pulsed conditions, thermal performance on FR4 PCBs with varying collector pad sizes, and compatibility with 5 V logic-level base drive in space-constrained SMT designs.
Technical Context
This NPN transistor uses epitaxial planar die construction optimized for low on-state loss and stable gain across temperature. Its design targets continuous and pulsed switching in 20 V rail systems where power dissipation must be minimized without forced cooling.
It operates with VCEO = 20 V, IC = 5 A DC, ICM = 10 A (1 ms pulse), and achieves VCE(sat) ≤ 220 mV at IC = 5 A / IB = 500 mA - enabling efficient operation in battery-powered and thermally constrained applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 20 V - Maximum safe collector-emitter voltage with base open; defines upper rail limit for DC-DC and motor drive stages. |
| IC (max) | 5 A DC - Continuous collector current rating; supports fan/motor drivers and power switches without heatsinking on standard FR4. |
| RCE(sat) | 32–44 mΩ at IC = 5 A / IB = 500 mA - Directly determines conduction loss (Pcond ≈ IC² × RCE(sat)) in high-current switching nodes. |
| hFE | 200–380 at IC = 5 A - Ensures sufficient current gain for direct microcontroller GPIO drive without external pre-biasing. |
| Tj(max) | 150 °C - Junction temperature limit enabling reliable operation in sealed enclosures or ambient temperatures up to 85 °C with proper PCB copper area. |
| fT | 100–125 MHz - Transition frequency confirming suitability for PWM switching up to ~1–2 MHz with minimal gain roll-off. |
Pinout & Package
SOT89 (SC-62/TO-243) plastic surface-mount package: 3-lead, 1.5 mm pitch, 4.5 mm × 2.5 mm × 1.5 mm body; collector tab provides primary thermal path to PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter (E) | Reference node for base-emitter bias; connects to ground or low-side return path in common-emitter configurations. |
| 2 | Collector (C) | Main power output terminal; soldered to large copper pour for thermal management and current conduction. |
| 3 | Base (B) | Control input requiring ~500 mA peak drive for full saturation at 5 A load; compatible with 3.3 V/5 V logic when buffered. |
Key Features
| Feature | Design Value |
|---|---|
| Low VCE(sat) at high current | VCE(sat) ≤ 220 mV @ IC = 5 A reduces conduction losses by >40% vs. standard bipolar transistors in same package. |
| High hFE at IC = 5 A | hFE ≥ 200 enables single-stage base drive from MCU GPIOs or low-power logic buffers without Darlington stacking. |
| Thermal robustness on FR4 | Rth(j-a) = 90 K/W (6 cm² collector pad) allows 1.4 W continuous dissipation - sufficient for 5 A loads at 85 °C ambient. |
| Pulsed current capability | ICM = 10 A (1 ms) supports inrush current handling in motor startup and capacitor charging circuits. |
Applications
| Motor/Fan Driver | Strobe Flash Unit |
|---|---|
|
Use Scenario: Driving 12 V DC brushless fans or small PMDC motors in networking equipment and portable devices. IC Role / Device Role / Timing Role: Low-side switch controlling motor current path; switched at 20–100 kHz PWM for speed regulation. Use Value: 32 mΩ RCE(sat) limits power loss to <1 W at 5 A, eliminating need for heatsink in compact fan modules. |
Use Scenario: High-current discharge switch for xenon or LED strobe capacitors in DSLR cameras and mobile phone flash circuits. IC Role / Device Role / Timing Role: Fast-turn-on saturated switch delivering 3–5 A pulses within <10 µs for precise flash timing control. Use Value: VCE(sat) ≤ 220 mV ensures >95% energy transfer efficiency from storage capacitor to flash load. |
| TFT Display Inverter | LAN/ADSL Power Switch |
|
Use Scenario: Backlight power switching in TFT-LCD inverters requiring 20 V, 2–4 A pulsed loads. IC Role / Device Role / Timing Role: Primary high-current switch in half-bridge or flyback auxiliary stage; driven by gate driver IC. Use Value: fT ≥ 100 MHz supports clean turn-on/turn-off edges at 50–200 kHz, minimizing switching loss and EMI. |
Use Scenario: 20 V power enable/disable switch for Ethernet PHY or ADSL line driver ICs in telecom equipment. IC Role / Device Role / Timing Role: Controlled ON/OFF power rail switch with fast response (<1 µs) and low quiescent leakage. Use Value: ICES ≤ 100 nA ensures <1 µW standby loss, critical for Energy-Efficient Ethernet (EEE) compliance. |
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 NSS45501LT1G | VCEO = 20 V, IC = 4.5 A, RCE(sat) = 40–60 mΩ @ IC = 4.5 A - higher saturation resistance than PBSS4520X. | Lower current rating limits use in 5 A motor drivers; suitable only for ≤4 A strobe or DC-DC loads. | Select when footprint compatibility with SOT-23-3 is required and 500 mA base drive is unavailable. |
| Diodes Incorporated DXT75500QE-13 | VCEO = 20 V, IC = 5 A, RCE(sat) = 35–55 mΩ @ IC = 5 A - wider RCE(sat) spread and lower hFE (150–300). | Reduced gain requires higher base current (≥600 mA) for full saturation, increasing driver complexity. | Choose for cost-sensitive industrial designs where ±10 mΩ RCE(sat) variation is acceptable and thermal margin is ample. |
Compared with NSS45501LT1G and DXT75500QE-13, PBSS4520X offers tighter RCE(sat) tolerance (±12 mΩ), higher hFE at full load, and superior thermal derating on standard FR4 - making it optimal for space- and efficiency-critical 5 A switching nodes.
Availability
PBSS4520X,146 is available at Aetrix Electronics and suitable for medium-power peripheral drivers, strobe flash units, TFT display inverters, and LAN/ADSL power switching requiring stable component supply and consistent SOT89 lead-frame performance.
Supply support for PBSS4520X,146 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, industrial, and consumer power management solutions.
PBSS4520X belongs to Nexperia's "Low VCE(sat) Transistor" product line, engineered specifically for efficiency-critical medium-power switching in space-constrained SMT applications where thermal performance and logic-level drivability are essential.
FAQ
What is the maximum continuous collector current for PBSS4520X,146 at 85 °C ambient?
At Tamb = 85 °C with a 6 cm² collector copper pad on FR4, the device sustains 5 A DC due to its Rth(j-a) = 90 K/W and Ptot = 1.4 W rating. Derating begins above 85 °C per Fig. 1 - at 100 °C ambient, max IC drops to ~4.2 A to maintain Tj ≤ 150 °C.
Can PBSS4520X,146 be driven directly from a 3.3 V microcontroller GPIO?
No - the base requires ~500 mA peak current for full saturation at 5 A collector load, exceeding typical GPIO drive capability. A dedicated base driver (e.g., TC4427) or logic-level MOSFET buffer is required to achieve specified RCE(sat) and switching speed.
Is PBSS4520X,146 qualified for automotive applications?
No - per Revision History (Table 8), this part is explicitly non-automotive qualified. Nexperia offers automotive-grade variants (e.g., PBSS4520X-Q) with AEC-Q101 qualification, enhanced HTOL testing, and PPAP documentation - PBSS4520X,146 must not be used in safety-critical or automotive systems.
What is the recommended PCB layout for thermal performance?
Use a minimum 6 cm² copper pour connected to Pin 2 (collector) with ≥4 thermal vias (0.3 mm diameter, 0.8 mm pitch) to inner ground plane. Solder mask opening over the collector pad is mandatory; avoid silkscreen over thermal land. Reflow profile must follow Fig. 14 footprint dimensions (4.75 mm × 2.25 mm).
PBSS4520X,146 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 5 A
- Voltage - Collector Emitter Breakdown (Max):
- 20 V
- Vce Saturation (Max) @ Ib, Ic:
- 220mV @ 500mA, 5A
- Current - Collector Cutoff (Max):
- 100nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 250 @ 2A, 2V
- Power - Max:
- 550 mW
- Frequency - Transition:
- 125MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89
PBSS4520X,146 FAQ
1.How can I place an order for PBSS4520X,146 through Aetrix?
Please submit a Request for Quotation (RFQ) for PBSS4520X,146 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 PBSS4520X,146 reliable?
The price and inventory of PBSS4520X,146 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBSS4520X,146 is usually 5 days.
3.What payment methods are accepted for PBSS4520X,146?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBSS4520X,146 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PBSS4520X,146?
PBSS4520X,146 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PBSS4520X,146 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 PBSS4520X,146?
For technical support, including PBSS4520X,146 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBSS4520X,146 requirements.
6.How does Aetrix verify that PBSS4520X,146 is sourced from the original manufacturer or authorized distributors?
All PBSS4520X,146 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 PBSS4520X,146 meets industry standards.
7.What is the process for return or replacement of PBSS4520X,146?
All PBSS4520X,146 units undergo pre-shipment inspection (PSI). If there is an issue with PBSS4520X,146, 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 PBSS4520X,146 part is unused and in its original packaging.
Return procedure for PBSS4520X,146:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PBSS4520X,146 Tags
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