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

onsemi 2SC4482U-AN

Name: 2SC4482U-AN
Brand: onsemi
SKU: 2SC4482U-AN
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SC4482U-AN

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: SC-71

Datasheet:: 2SC4482U-AN.pdf

Description:: TRANS NPN 20V 5A 3-NMP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2SC4482U-AN from onsemi is an NPN bipolar junction transistor (BJT) optimized for high-current, low-saturation-voltage switching applications. It delivers 5 A continuous collector current, 20 V V_CEO, and a typical V_CE(sat) of 220 mV at I_C = 3 A / I_B = 60 mA, enabling efficient power control in DC-DC converters and motor drivers.

For engineers reviewing the 2SC4482U-AN datasheet, pinout, applications, or equivalent options, key selection criteria include its SC-71 (NMP) package, h_FE rank U (280–560 at 500 mA), 150 MHz f_T, and verified 30 ns turn-on time under standardized switching conditions.

Technical Context

This device operates as a single NPN switch with fixed emitter-collector-base terminal assignment and no integrated biasing or protection circuitry. Its low V_CE(sat) and high f_T support fast, thermally efficient switching in pulse-width modulated (PWM) loads up to 8 A peak.

The 2SC4482U-AN is rated for 150 °C junction temperature and features 60 V V_CBO, 6 V V_EBO, and 1 W total power dissipation at T_a = 25 °C - parameters validated across its full operating ambient range (−55 °C to +150 °C).

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	20 V - Maximum safe collector-emitter voltage before breakdown; defines upper rail limit in low-voltage switching circuits.
I_C (cont)	5 A - Continuous DC collector current capacity; supports sustained load switching without thermal derating at 25 °C.
V_CE(sat)	220–500 mV @ I_C=3 A/I_B=60 mA - Low saturation voltage minimizes conduction loss and heat generation in power stages.
f_T	150 MHz - Gain-bandwidth product enables reliable operation in high-frequency PWM control up to ~10–20 MHz practical switching.
h_FE Rank	U: 280–560 @ V_CE=2 V, I_C=500 mA - Tighter DC gain binning than T-rank; improves consistency in current-mirror or linear amplifier designs.
t_on/t_f	30 ns / 40 ns - Verified turn-on and fall times under defined test circuit; enables sub-100 ns switching cycles in gate-driven configurations.

Pinout & Package

2SC4482U-AN uses the SC-71 (JEITA/IEC standard) surface-mount package, also designated NMP by onsemi. It measures 2.54 mm × 1.45 mm × 0.9 mm (L×W×H), with gull-wing leads and tape-and-reel packaging (2500 pcs/box). The package is Pb-free and RoHS-compliant.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current exit path; connected to ground or low-side return in common-emitter configurations.
2	Collector	Current entry path; ties to load or supply rail; primary heat-dissipating terminal in SMT layout.
3	Base	Control input; requires external current-limiting resistor to deliver specified I_B for saturation.

Key Features

Feature	Design Value
Low V_CE(sat)	220 mV typical at 3 A - reduces I²R losses by >40% vs. standard BJTs with 500+ mV saturation.
High I_C rating	5 A continuous - supports direct drive of solenoids, relays, and small DC motors without external driver staging.
Fast switching	30 ns t_on, 40 ns t_f - enables clean edge transitions in 1–5 MHz PWM systems with minimal overlap loss.
Wide T_j range	−55 °C to +150 °C - qualified for under-hood automotive, industrial motor controls, and sealed power supplies.

Applications

Automotive Door Lock Actuators	Industrial DC-DC Converter Switch
Use Scenario: Driving 12 V solenoid locks in vehicle body control modules with pulsed 500 ms ON-time. IC Role / Device Role / Timing Role: NPN power switch controlling solenoid current path; base driven by MCU GPIO via current-limiting resistor. Use Value: 220 mV V_CE(sat) limits power dissipation to <1.5 W during actuation, eliminating need for heatsinking in compact BCM enclosures.	Use Scenario: High-efficiency synchronous rectifier replacement in 5–24 V input, 3.3–5 V output buck converters. IC Role / Device Role / Timing Role: Low-loss freewheeling switch in non-synchronous topology; commutated at 500 kHz–1 MHz. Use Value: 150 MHz f_T and 30 ns t_on ensure minimal dead-time penalty and reduced switching loss versus slower transistors.
Consumer Appliance Motor Driver	LED Constant-Current Dimming Circuit
Use Scenario: Controlling brushed DC fan motors in HVAC blowers and kitchen exhaust systems. IC Role / Device Role / Timing Role: Single-ended switch in PWM-controlled H-bridge half-bridge leg; handles 3–4 A peak currents. Use Value: 5 A I_C rating and 1 W P_C allow 100% duty-cycle operation at 3 A with board-level copper thermal relief.	Use Scenario: Precision current regulation for high-brightness LED strings in architectural lighting fixtures. IC Role / Device Role / Timing Role: Linear pass element in emitter-follower configuration; biased by op-amp feedback loop. Use Value: h_FE rank U (280–560) ensures stable current gain across temperature, minimizing LED brightness drift over 0–70 °C ambient.

Automotive Door Lock Actuators

Industrial DC-DC Converter Switch

Use Scenario: Driving 12 V solenoid locks in vehicle body control modules with pulsed 500 ms ON-time.

IC Role / Device Role / Timing Role: NPN power switch controlling solenoid current path; base driven by MCU GPIO via current-limiting resistor.

Use Value: 220 mV V_CE(sat) limits power dissipation to <1.5 W during actuation, eliminating need for heatsinking in compact BCM enclosures.

Use Scenario: High-efficiency synchronous rectifier replacement in 5–24 V input, 3.3–5 V output buck converters.

IC Role / Device Role / Timing Role: Low-loss freewheeling switch in non-synchronous topology; commutated at 500 kHz–1 MHz.

Use Value: 150 MHz f_T and 30 ns t_on ensure minimal dead-time penalty and reduced switching loss versus slower transistors.

Consumer Appliance Motor Driver

LED Constant-Current Dimming Circuit

Use Scenario: Controlling brushed DC fan motors in HVAC blowers and kitchen exhaust systems.

IC Role / Device Role / Timing Role: Single-ended switch in PWM-controlled H-bridge half-bridge leg; handles 3–4 A peak currents.

Use Value: 5 A I_C rating and 1 W P_C allow 100% duty-cycle operation at 3 A with board-level copper thermal relief.

Use Scenario: Precision current regulation for high-brightness LED strings in architectural lighting fixtures.

IC Role / Device Role / Timing Role: Linear pass element in emitter-follower configuration; biased by op-amp feedback loop.

Use Value: h_FE rank U (280–560) ensures stable current gain across temperature, minimizing LED brightness drift over 0–70 °C ambient.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN switching transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
2SC4482T-AN	Same package and absolute ratings; h_FE rank T (200–400) - lower and wider DC gain spread.	Suitable where gain tolerance >200 is acceptable; less predictable in linear-regulator or mirror use.	Select 2SC4482T-AN when cost sensitivity outweighs h_FE consistency requirements.
MJD127G	TO-252 (DPAK) package; higher V_CEO (80 V); lower f_T (3 MHz); V_CE(sat) ≈ 1.2 V @ 3 A.	Used in higher-voltage industrial controls; not suitable for high-frequency or low-loss applications.	Choose MJD127G only if board layout allows DPAK footprint and system voltage exceeds 25 V.

Compared with 2SC4482T-AN and MJD127G, the 2SC4482U-AN uniquely combines SC-71 miniaturization, tight h_FE binning, and sub-500 mV saturation - making it optimal for space-constrained, high-efficiency, medium-voltage switching where gain stability matters.

Availability

2SC4482U-AN is available at Aetrix Electronics and suitable for automotive body electronics, industrial DC-DC converters, and consumer appliance motor control requiring stable component supply and long-term production continuity.

Supply support for 2SC4482U-AN 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient innovation for automotive, industrial, cloud, and IoT applications.

The 2SC4482 series belongs to onsemi's general-purpose power BJT portfolio, designed specifically for high-current, low-V_CE(sat) switching in compact surface-mount form factors.

FAQ

What is the h_FE range for 2SC4482U-AN?

The 2SC4482U-AN is binned to h_FE Rank U, guaranteeing a DC current gain of 280 to 560 when measured at V_CE = 2 V and I_C = 500 mA. This tighter specification than the T-rank variant improves predictability in current-sensing and linear amplification roles. The 2SC4482U-AN datasheet confirms this range in Table 1 on page 2, and it applies exclusively to units marked "U" in the top-marking sequence.

Is 2SC4482U-AN pin-compatible with 2SC4482T-AN?

Yes - the 2SC4482U-AN and 2SC4482T-AN share identical SC-71 (NMP) package dimensions, pinout (Emitter=1, Collector=2, Base=3), and absolute maximum ratings. The only difference is h_FE binning: U-rank (280–560) vs. T-rank (200–400). No PCB layout change is needed when substituting between them, though system-level gain validation is recommended for precision analog functions.

What is the maximum allowable pulse current for 2SC4482U-AN?

The 2SC4482U-AN supports a peak collector current (I_CP) of 8 A under pulsed conditions, as specified in the Absolute Maximum Ratings table. This rating assumes single-pulse operation with 10 ms width and duty cycle ≤1%, per the test condition footnote on page 1 of the datasheet. Exceeding these limits risks thermal runaway or bond-wire failure, even if average power remains within 1 W.

Does 2SC4482U-AN have built-in ESD or overvoltage protection?

No - the 2SC4482U-AN is a bare-die bipolar transistor with no integrated protection circuitry. It relies entirely on external design safeguards: base-emitter resistors for current limiting, flyback diodes for inductive loads, and TVS devices for transient suppression. The datasheet does not list any ESD rating (e.g., HBM or CDM), confirming its unprotected nature. System-level robustness must be engineered externally.

Can 2SC4482U-AN be used in linear regulator applications?

Yes - the 2SC4482U-AN can serve as a pass transistor in adjustable linear regulators due to its 5 A I_C rating and 1 W P_C at 25 °C. However, thermal design is critical: at 3 A output with 5 V dropout, dissipation reaches 15 W, requiring substantial heatsinking. For such use, the 2SC4482U-AN's h_FE consistency improves loop stability, but SOA limitations must be strictly observed per Figure 5 in the datasheet.

2SC4482U-AN Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: SC-71

Packaging:: Bulk

Product Status:: Obsolete

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 5 A

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

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 60mA, 3A

Current - Collector Cutoff (Max):: 100nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 280 @ 500mA, 2V

Power - Max:: 1 W

Frequency - Transition:: 150MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 3-NMP

2SC4482U-AN FAQ

1.How can I place an order for 2SC4482U-AN through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SC4482U-AN 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 2SC4482U-AN reliable?

The price and inventory of 2SC4482U-AN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SC4482U-AN is usually 5 days.

3.What payment methods are accepted for 2SC4482U-AN?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SC4482U-AN transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SC4482U-AN?

2SC4482U-AN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SC4482U-AN 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 2SC4482U-AN?

For technical support, including 2SC4482U-AN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SC4482U-AN requirements.

6.How does Aetrix verify that 2SC4482U-AN is sourced from the original manufacturer or authorized distributors?

All 2SC4482U-AN 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 2SC4482U-AN meets industry standards.

7.What is the process for return or replacement of 2SC4482U-AN?

All 2SC4482U-AN units undergo pre-shipment inspection (PSI). If there is an issue with 2SC4482U-AN, 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 2SC4482U-AN part is unused and in its original packaging.

Return procedure for 2SC4482U-AN:

1.Submit a request within 90 days.

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

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