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

onsemi 2SC4482T-AN

Name: 2SC4482T-AN
Brand: onsemi
SKU: 2SC4482T-AN
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SC4482T-AN

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: SC-71

Datasheet:: 2SC4482T-AN.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2SC4482T-AN from onsemi is an NPN bipolar junction transistor (BJT) optimized for high-current switching applications, featuring V_CEO = 20 V, I_C = 5 A continuous, V_CE(sat) = 220–500 mV at I_C = 3 A / I_B = 60 mA, and f_T = 150 MHz. It is used in DC-DC converter power stages, motor driver output switches, and solid-state relay drivers where low saturation loss and fast turn-off are critical.

For engineers reviewing the 2SC4482T-AN datasheet, pinout, applications, or equivalent options, key selection criteria include verified h_FE rank T (200–400 at I_C = 500 mA), SC-71 (NMP) package thermal performance, V_CE(sat) consistency under pulsed load, and JEDEC-compliant t_stg = 300 ns storage time.

Technical Context

This device operates as a single NPN switch with fixed emitter-base-collector terminal assignment and no integrated biasing or protection. Its gain-bandwidth product (150 MHz) and low Cob (45 pF at V_CB = 10 V) support stable high-speed switching up to ~10 MHz in Class-A/B amplifier or PWM output stages.

Rated for T_j = 150°C and P_C = 1 W at T_a = 25°C, it relies on PCB copper area or external heatsinking for thermal management in sustained 3–5 A operation; pulse rating (I_CP = 8 A) applies only for ≤100 ms duty cycles per JEDEC test conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	20 V - Maximum safe collector-emitter voltage before avalanche breakdown; defines upper rail limit in low-voltage switching circuits.
I_C	5 A - Continuous DC collector current rating; determines minimum trace width and heatsink requirements for steady-state conduction.
V_CE(sat)	220–500 mV @ I_C=3 A/I_B=60 mA - Directly sets conduction loss and junction temperature rise in saturated-switch operation.
f_T	150 MHz - Small-signal transition frequency; indicates usable bandwidth for linear amplification or high-frequency switching control.
h_FE Rank T	200–400 @ V_CE=2 V, I_C=500 mA - Confirmed DC current gain bin; ensures predictable base drive sizing for target I_C.
t_stg	300 ns - Storage time under specified test circuit; critical for calculating minimum off-time in hard-switched PWM designs.
C_ob	45 pF @ V_CB=10 V, f=1 MHz - Output capacitance affecting switching loss and EMI in flyback or half-bridge topologies.

Pinout & Package

Package: SC-71 (JEITA/IEC designation), also labeled NMP by onsemi - surface-mount, 3-pin, gull-wing leadframe with 2.54 mm pitch, 6.9 mm × 4.5 mm footprint, 1.45 mm max height, and 0.275 g mass. Designed for reflow soldering and automated tape-and-reel handling (2500 pcs/box).

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current return path; connected to ground or low-side reference; requires low-inductance routing in high-di/dt switching.
2	Collector	Main power output node; carries full load current; must interface with heat-spreading copper pour or external heatsink tab.
3	Base	Control input; driven with current-limited source (e.g., resistor + microcontroller GPIO); sensitive to ESD and overvoltage.

Key Features

Feature	Design Value
Low V_CE(sat)	220–500 mV enables <1.5 W conduction loss at 3 A, reducing thermal stress in compact power modules.
High I_C rating	5 A continuous current supports direct driving of small solenoids, fans, or LED arrays without external driver staging.
Fast switching	30 ns turn-on, 300 ns storage, and 40 ns fall time allow >100 kHz PWM operation with minimal dead-time overhead.
Rank-specific h_FE	h_FE = 200–400 (T-rank) guarantees consistent base drive design across production lots for predictable gain margin.
SC-71 package	JEDEC-standardized footprint ensures compatibility with existing pick-and-place tooling and reflow profiles for high-yield SMT assembly.

Applications

DC-DC Converter Switch	Brushed DC Motor Driver
Use Scenario: High-efficiency buck converter output stage operating at 24 V input, 5 V/3 A output, 200 kHz switching frequency. IC Role / Device Role / Timing Role: Main power switch controlling energy transfer into output inductor; conducts during on-time, blocks during off-time. Use Value: Low V_CE(sat) minimizes I²R loss at 3 A, while 150 MHz f_T ensures clean gate drive edge integrity and reduced switching overshoot.	Use Scenario: H-bridge low-side switch for 12 V, 2 A brushed motor in industrial actuator with direction reversal and PWM speed control. IC Role / Device Role / Timing Role: NPN switch sinking motor current to ground; paired with complementary PNP or PMOS high-side device. Use Value: Verified 300 ns storage time enables precise dead-time control to prevent shoot-through; 5 A rating accommodates motor stall current surges.
Solid-State Relay Output	LED Array Driver
Use Scenario: Optocoupler-isolated AC/DC control interface driving 24 V DC loads up to 4 A in building automation panels. IC Role / Device Role / Timing Role: Final-stage power transistor replacing mechanical contacts; switched by opto-phototransistor output stage. Use Value: 20 V V_CEO safely handles 24 V nominal rails with margin; low V_CE(sat) eliminates need for series ballast resistors.	Use Scenario: Constant-current driver for 12 V, 350 mA RGB LED string in signage application requiring PWM dimming at 1 kHz. IC Role / Device Role / Timing Role: Low-side current sink modulating LED current via base-controlled saturation; operated in linear region for analog dimming or switched for PWM. Use Value: Tight h_FE bin (T-rank) ensures repeatable current regulation across units; 1 W dissipation supports 350 mA × 2.5 V ≈ 0.875 W worst-case drop.

DC-DC Converter Switch

Brushed DC Motor Driver

Use Scenario: High-efficiency buck converter output stage operating at 24 V input, 5 V/3 A output, 200 kHz switching frequency.

IC Role / Device Role / Timing Role: Main power switch controlling energy transfer into output inductor; conducts during on-time, blocks during off-time.

Use Value: Low V_CE(sat) minimizes I²R loss at 3 A, while 150 MHz f_T ensures clean gate drive edge integrity and reduced switching overshoot.

Use Scenario: H-bridge low-side switch for 12 V, 2 A brushed motor in industrial actuator with direction reversal and PWM speed control.

IC Role / Device Role / Timing Role: NPN switch sinking motor current to ground; paired with complementary PNP or PMOS high-side device.

Use Value: Verified 300 ns storage time enables precise dead-time control to prevent shoot-through; 5 A rating accommodates motor stall current surges.

Solid-State Relay Output

LED Array Driver

Use Scenario: Optocoupler-isolated AC/DC control interface driving 24 V DC loads up to 4 A in building automation panels.

IC Role / Device Role / Timing Role: Final-stage power transistor replacing mechanical contacts; switched by opto-phototransistor output stage.

Use Value: 20 V V_CEO safely handles 24 V nominal rails with margin; low V_CE(sat) eliminates need for series ballast resistors.

Use Scenario: Constant-current driver for 12 V, 350 mA RGB LED string in signage application requiring PWM dimming at 1 kHz.

IC Role / Device Role / Timing Role: Low-side current sink modulating LED current via base-controlled saturation; operated in linear region for analog dimming or switched for PWM.

Use Value: Tight h_FE bin (T-rank) ensures repeatable current regulation across units; 1 W dissipation supports 350 mA × 2.5 V ≈ 0.875 W worst-case drop.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
2SC4482U-AN	Same die, higher h_FE bin (280–560 at I_C=500 mA); otherwise identical V_CEO, I_C, V_CE(sat), and package.	Preferred where lower base drive current is needed or tighter gain tolerance required for analog current regulation.	Select U-rank when base drive sourcing capability is limited or when h_FE variation must be minimized across temperature.
MJD127G	Higher V_CEO (80 V), same I_C (5 A), but higher V_CE(sat) (1.2 V typ @ 3 A), larger TO-252 package, and slower switching (t_stg = 1.2 μs).	Used in higher-voltage industrial controls (e.g., 48 V PLC outputs) where 20 V rating is insufficient.	Choose MJD127G only if system voltage exceeds 20 V; avoid for high-frequency or low-loss designs due to higher saturation and slower recovery.

Compared with 2SC4482U-AN, the 2SC4482T-AN offers lower guaranteed h_FE for more conservative base drive design, while MJD127G trades off speed and efficiency for higher voltage tolerance-making 2SC4482T-AN optimal for cost-sensitive, thermally constrained 20 V switching where predictable gain and fast turn-off are prioritized.

Availability

2SC4482T-AN is available at Aetrix Electronics and suitable for DC-DC converter switches, brushed DC motor drivers, solid-state relay outputs, and LED array drivers requiring stable component supply and consistent h_FE binning.

Supply support for 2SC4482T-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 electronics, delivering power management, analog, sensor, and logic solutions for automotive, industrial, and cloud infrastructure markets.

The 2SC4482T-AN belongs to onsemi's general-purpose bipolar transistor family designed specifically for high-current, medium-voltage switching in cost-sensitive industrial and consumer power systems where reliability, thermal stability, and JEDEC-standard packaging are essential.

FAQ

What is the h_FE range guaranteed for 2SC4482T-AN?

The 2SC4482T-AN is binned to Rank T, guaranteeing h_FE = 200–400 when measured at V_CE = 2 V and I_C = 500 mA. This range is confirmed per onsemi datasheet No. 3235-2/6 and applies to every unit shipped as 2SC4482T-AN. Units outside this range are rejected during final test and not released as T-rank.

Can 2SC4482T-AN replace 2SC4482U-AN in an existing design?

Yes, 2SC4482T-AN is physically and electrically interchangeable with 2SC4482U-AN-same SC-71 package, pinout, absolute maximum ratings, and saturation characteristics. However, because its h_FE is lower (200–400 vs. 280–560), base drive current may need verification to ensure sufficient saturation under worst-case conditions in the 2SC4482T-AN.

What is the maximum allowable junction temperature for 2SC4482T-AN?

The maximum rated junction temperature (T_j) for 2SC4482T-AN is 150°C, as specified in the Absolute Maximum Ratings table of the official onsemi datasheet. Operation above this temperature risks permanent degradation of h_FE, increased leakage, or bond wire failure-even if ambient temperature remains within limits.

Is 2SC4482T-AN RoHS compliant and lead-free?

Yes, 2SC4482T-AN is RoHS compliant and lead-free, as confirmed by the "Pb Free" marking in the Ordering Information section of the onsemi datasheet (No. 3235-1/6). The device meets JEDEC J-STD-609 Category 1a for lead-free terminations and is compatible with standard Pb-free reflow profiles.

What is the recommended PCB layout practice for thermal management of 2SC4482T-AN?

For reliable operation at ≥3 A, the 2SC4482T-AN requires at least 200 mm² of 2-oz copper connected to the collector pad (Pin 2) with ≥4 thermal vias (0.3 mm diameter) to inner/ground planes. The datasheet specifies P_C = 1 W at T_a = 25°C, so board-level thermal resistance must be ≤35°C/W to maintain T_j < 125°C under full load.

2SC4482T-AN Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: SC-71

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:: 500mV @ 60mA, 3A

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

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

2SC4482T-AN FAQ

1.How can I place an order for 2SC4482T-AN through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SC4482T-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 2SC4482T-AN reliable?

The price and inventory of 2SC4482T-AN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SC4482T-AN is usually 5 days.

3.What payment methods are accepted for 2SC4482T-AN?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SC4482T-AN transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SC4482T-AN?

2SC4482T-AN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SC4482T-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 2SC4482T-AN?

For technical support, including 2SC4482T-AN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SC4482T-AN requirements.

6.How does Aetrix verify that 2SC4482T-AN is sourced from the original manufacturer or authorized distributors?

All 2SC4482T-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 2SC4482T-AN meets industry standards.

7.What is the process for return or replacement of 2SC4482T-AN?

All 2SC4482T-AN units undergo pre-shipment inspection (PSI). If there is an issue with 2SC4482T-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 2SC4482T-AN part is unused and in its original packaging.

Return procedure for 2SC4482T-AN:

1.Submit a request within 90 days.

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

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