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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

Nexperia USA Inc. PBSS5420D,115

Name: PBSS5420D,115
Brand: Nexperia USA Inc.
SKU: PBSS5420D,115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PBSS5420D,115

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: SC-74, SOT-457

Datasheet:: PBSS5420D,115.pdf

Description:: TRANS PNP 20V 4A 6-TSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PBSS5420D,115 from Nexperia is a PNP low V_CEsat Breakthrough in Small Signal (BISS) transistor in SOT457 (SC-74) package, rated for −20 V V_CEO, −4 A continuous collector current, and 50–70 mΩ R_CEsat at −4 A/−400 mA drive; used as high-efficiency power switch in DC-DC converters and MOSFET gate drivers.

For engineers reviewing the PBSS5420D,115 datasheet, PBSS5420D,115 pinout, PBSS5420D,115 application, or PBSS5420D,115 equivalent, this page delivers verified electrical specs, thermal derating curves, switching timing (t_on = 45 ns, t_off = 280 ns), and real-world use cases in TFT backlight inverters and motor control circuits.

Technical Context

This PNP BISS transistor employs optimized epitaxial base and emitter structures to achieve ultra-low saturation voltage (−200 to −280 mV at −4 A) and minimal on-resistance (50–70 mΩ), enabling high-current switching with reduced conduction loss and thermal stress. Its 6-pin SOT457 package integrates four collector terminals (pins 1,2,5,6) for enhanced current handling and thermal spreading.

It operates with DC current gain (h_FE) of 120–200 at −4 A/−2 V, supports peak pulse currents up to −15 A (tp ≤ 1 ms), and maintains stable performance across −65 °C to +150 °C ambient range, making it suitable for automotive-grade power management where thermal reliability is critical.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−20 V: Maximum safe collector-emitter blocking voltage with open base; defines maximum supply rail compatibility in PNP switch configurations.
I_C (continuous)	−4 A: Continuous collector current rating at T_amb ≤ 25 °C on FR4 PCB; sets baseline load-handling capability for sustained power switching.
R_CEsat	50–70 mΩ: On-state resistance at −4 A/−400 mA drive; directly determines I²R conduction loss and junction temperature rise under load.
t_off	280 ns: Total turn-off time (storage + fall); enables operation up to ~350 kHz switching frequency in hard-switched DC-DC topologies.
P_tot (FR4, 6 cm² pad)	2.5 W: Maximum pulsed power dissipation (δ ≤ 10 %, t_p ≤ 10 ms); supports short-duration high-current bursts without thermal runaway.
h_FE @ −4 A	120–200: DC current gain at full rated current; ensures sufficient base drive margin for reliable saturation in high-current gate driving applications.
V_BEsat @ −4 A	−1.0 to −1.1 V: Base-emitter saturation voltage; defines minimum driver voltage compliance needed to maintain low R_CEsat.

Pinout & Package

Package: SOT457 (SC-74), 6-lead surface-mount plastic package with exposed collector pads; dimensions 3.1 × 1.7 × 1.3 mm; designed for high thermal conductivity on FR4 or ceramic PCBs.

Pin/Terminal	Circuit Role	Design Meaning
1	Collector	Primary high-current output path; electrically and thermally connected to internal die collector region; one of four parallel collector terminals.
2	Collector	Secondary collector terminal; shares same node as pin 1; improves current distribution and reduces package inductance.
3	Base	Control input for transistor biasing; requires −400 mA drive to achieve specified R_CEsat at −4 A collector current.
4	Emiter	Reference terminal for PNP operation; connects to higher potential rail (e.g., V_CC) in high-side switch configurations.
5	Collector	Third collector terminal; enhances thermal dissipation via multiple solder joints and reduces localized heating.
6	Collector	Fourth collector terminal; provides redundancy and mechanical stability; all collector pins must be routed to same net.

Key Features

Feature	Design Value
Ultra-low V_CEsat	−200 to −280 mV at −4 A/−400 mA: Reduces conduction loss by >50% vs. standard PNP transistors, lowering thermal design burden in space-constrained layouts.
Multi-collector architecture	Four collector terminals (pins 1,2,5,6): Lowers effective package resistance and thermal impedance, improving power density and reliability in high-current paths.
High peak current capability	−15 A single-pulse rating (t_p ≤ 1 ms): Supports surge loads in motor startup, capacitor charging, and fault-tolerant power stages without device failure.
Wide operating temperature	−65 °C to +150 °C junction range: Enables deployment in under-hood automotive modules and industrial power supplies without derating penalties.
Fast switching	t_on = 45 ns, t_off = 280 ns: Allows efficient operation in high-frequency DC-DC converters (>300 kHz), minimizing dead-time losses and EMI generation.

Applications

DC-DC Converter Switch

MOSFET Gate Driver

Use Scenario: Used as synchronous rectifier or high-side switch in buck/boost converters delivering 3–12 V at up to 4 A output.

IC Role / Device Role / Timing Role: PNP BISS transistor operating in saturated switching mode; handles main power path with minimal V_CEsat-induced loss.

Use Value: Achieves >92% efficiency at 4 A due to 50–70 mΩ R_CEsat, reducing heatsink requirements and enabling compact 12 V → 5 V/3.3 V point-of-load designs.

Use Scenario: Drives N-channel MOSFET gates in half-bridge motor drivers and LED backlight inverters requiring fast, high-current turn-on pulses.

IC Role / Device Role / Timing Role: High-current PNP switch sourcing base/gate current during MOSFET turn-on phase; complements low-side NPN/NMOS drivers.

Use Value: Delivers −400 mA base drive with <280 ns turn-off delay, ensuring clean gate voltage transitions and minimizing shoot-through risk in bridge topologies.

TFT Backlight Inverter

Motor/Fan Power Switch

Use Scenario: Controls cold-cathode fluorescent lamp (CCFL) or LED string current in notebook and monitor display backlight systems.

IC Role / Device Role / Timing Role: High-voltage PNP switch regulating AC square-wave current through resonant transformer primary winding.

Use Value: Withstands −20 V V_CEO and switches up to −15 A peaks, enabling robust operation during lamp ignition surges and dimming transients.

Use Scenario: Directly switches 12 V/24 V brushed DC motors or cooling fans in industrial controllers and automotive HVAC modules.

IC Role / Device Role / Timing Role: High-current PNP power switch placed between supply rail and motor/fan return path; operated in linear or PWM mode.

Use Value: Handles −4 A continuous and −15 A peak loads while maintaining <−280 mV V_CEsat, limiting self-heating and extending service life in sealed enclosures.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP low-V_CEsat transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
DMT3005LPS-7	−30 V V_CEO, −5 A I_C, 45 mΩ R_CEsat, SOT23-3 package (3-pin, no multi-collector)	Higher voltage rating but lower thermal robustness; lacks redundant collector terminals for high-current PCB routing	Select when board space is constrained and peak current stays below −5 A; avoid in high-thermal-stress motor drives.
PBSS5320PAS,115	PNP BISS in SOT1118 (LFPAK56) package; −20 V, −6 A, 35 mΩ R_CEsat; larger footprint, lower R_th(j-a)	Superior thermal performance (R_th(j-a) = 40 K/W) but requires rework of land pattern and layout	Choose for new designs needing >4 A continuous current or tighter thermal budgets; not drop-in compatible with SOT457 footprint.

Compared with PBSS5420D,115, DMT3005LPS-7 trades thermal robustness for compactness, while PBSS5320PAS,115 offers higher current and better cooling at the cost of board area - selection depends on whether layout reuse or thermal headroom is prioritized.

Availability

PBSS5420D,115 is available at Aetrix Electronics and suitable for DC-DC converter design, TFT backlight inverter development, and motor/fan power switching requiring stable component supply across automotive, industrial, and computing programs.

Supply support for PBSS5420D,115 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 leader in discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017, serving automotive, industrial, computing, and consumer markets with high-reliability components.

PBSS5420D,115 belongs to Nexperia's BISS transistor product line, engineered specifically for high-efficiency, high-current switching in space-constrained power management applications where low V_CEsat and thermal resilience are critical.

FAQ

What is the maximum allowable base current for continuous operation?

The absolute maximum DC base current is −0.8 A per the datasheet limiting values table. However, for reliable saturation at −4 A collector current, the recommended drive is −400 mA. Exceeding −0.8 A risks permanent degradation of h_FE and increased V_BEsat, especially above 100 °C junction temperature.

Can PBSS5420D,115 be used in linear (analog) amplification mode?

No - PBSS5420D,115 is optimized for switching operation with ultra-low V_CEsat and high peak current capability. Its h_FE drops significantly above −2 A, and thermal characteristics are specified only for pulsed or saturated switching conditions. It is not characterized or guaranteed for linear amplifier use.

How does the four-collector-pin configuration affect PCB layout?

All four collector pins (1,2,5,6) must be connected to the same high-current net, ideally using wide copper pours or multiple vias to a solid ground/power plane. This configuration lowers effective package resistance and spreads heat across the footprint, but requires careful routing to avoid current imbalance or parasitic inductance in high-dI/dt applications.

Is PBSS5420D,115 RoHS compliant and halogen-free?

Yes - PBSS5420D,115 meets RoHS Directive 2011/65/EU and is halogen-free per Nexperia's product compliance documentation (document ID: PBSS5420D_2, Rev. 02). The SOT457 package uses lead-free matte tin plating and green molding compound, certified for industrial and automotive applications.

PBSS5420D,115 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: SC-74, SOT-457

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 4 A

Voltage - Collector Emitter Breakdown (Max):: 20 V

Vce Saturation (Max) @ Ib, Ic:: 420mV @ 600mA, 6A

Current - Collector Cutoff (Max):: 100nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 200 @ 2A, 2V

Power - Max:: 1.1 W

Frequency - Transition:: 80MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 6-TSOP

PBSS5420D,115 FAQ

1.How can I place an order for PBSS5420D,115 through Aetrix?

Please submit a Request for Quotation (RFQ) for PBSS5420D,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 PBSS5420D,115 reliable?

The price and inventory of PBSS5420D,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBSS5420D,115 is usually 5 days.

3.What payment methods are accepted for PBSS5420D,115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBSS5420D,115 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PBSS5420D,115?

PBSS5420D,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PBSS5420D,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 PBSS5420D,115?

For technical support, including PBSS5420D,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBSS5420D,115 requirements.

6.How does Aetrix verify that PBSS5420D,115 is sourced from the original manufacturer or authorized distributors?

All PBSS5420D,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 PBSS5420D,115 meets industry standards.

7.What is the process for return or replacement of PBSS5420D,115?

All PBSS5420D,115 units undergo pre-shipment inspection (PSI). If there is an issue with PBSS5420D,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 PBSS5420D,115 part is unused and in its original packaging.

Return procedure for PBSS5420D,115:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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