Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

onsemi 2SC5706-TL-E

Name: 2SC5706-TL-E
Brand: onsemi
SKU: 2SC5706-TL-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: 2SC5706-TL-E

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: 2SC5706-TL-E.pdf

Description:: TRANS NPN 50V 5A TP-FA

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,024

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

2SC5706-TL-E from onsemi is an NPN bipolar junction transistor (BJT) designed for high-current switching applications, featuring 50 V V_CEO, 5 A I_C, low 90–135 mV V_CE(sat) at 1 A/50 mA drive, 400 MHz f_T, and TO-252 (SC-63) TP-FA surface-mount package. It serves as a main switch in DC/DC converters and motor drivers where low conduction loss and fast turn-on are critical.

For engineers reviewing the 2SC5706-TL-E datasheet, pinout, applications, or equivalent options, key selection criteria include verified V_CE(sat) performance at 2 A/100 mA, thermal dissipation capability up to 15 W at T_c = 25°C, JEDEC SC-63 compliance, and Pb-free tape-and-reel packaging (700 pcs./reel).

Technical Context

This NPN BJT employs onsemi's MBIT process for enhanced current handling and reduced saturation voltage. Its structure supports high-speed switching with 35 ns turn-on time and 20 ns fall time under specified test conditions (V_CC = 25 V, R_B = 25 Ω, I_C = 1 A).

The device operates within a junction temperature range of –55°C to +150°C and delivers stable h_FE = 200–560 at V_CE = 2 V, I_C = 500 mA. Output capacitance is rated at 15 pF typical at V_CB = 10 V, f = 1 MHz - enabling efficient operation in medium-frequency power switching topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - Maximum safe collector-emitter voltage before breakdown; defines upper rail limit in 24–48 V DC/DC stages.
I_C (cont.)	5 A - Continuous collector current rating; supports motor driver H-bridge legs and relay coil drivers without forced cooling.
V_CE(sat) @ 1A/50mA	90–135 mV - Low saturation voltage minimizes conduction loss (≤0.135 W at 1 A), improving efficiency in high-duty-cycle switches.
f_T	400 MHz - Gain-bandwidth product enables reliable switching up to ~50 MHz with adequate gain margin for gate driving or signal amplification.
P_C @ T_c=25°C	15 W - Case-power dissipation limit; allows high-pulse operation (e.g., 7.5 A I_CP) with proper PCB copper area or heatsinking.
C_ob	15 pF - Output capacitance at V_CB = 10 V; impacts switching losses and EMI in hard-switched converters above 100 kHz.

Pinout & Package

2SC5706-TL-E uses the TP-FA package - identical to JEDEC TO-252 (SC-63) - with gull-wing leads optimized for automated SMT assembly and thermal transfer via exposed drain pad (pin 2 & 4). Package dimensions: 6.5 × 5.0 × 2.3 mm (L × W × H), mass = 0.282 g.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input node; requires ≥50 mA base drive for full saturation at 1 A I_C; low V_BE(sat) (–0.89 to –1.2 V) reduces driver power demand.
2	Collector	Main current-carrying terminal (high-side switch node); electrically tied to pin 4; connects to heat slug for thermal management.
3	Emitter	Current return path; grounded in low-side configurations; must be routed with low-inductance trace to minimize switching overshoot.
4	Collector	Dual-collector configuration enhances current sharing and thermal spreading; both pins 2 and 4 must be soldered to PCB copper pour.

Key Features

Feature	Design Value
Low V_CE(sat)	90 mV typical at I_C = 1 A, I_B = 50 mA - cuts conduction loss by >40% vs. standard BJTs, extending battery life in portable motor systems.
High f_T	400 MHz - ensures sufficient small-signal gain at switching frequencies up to 50 MHz, supporting resonant converter control loops.
Robust pulse rating	I_CP = 7.5 A (100 ms single pulse) - handles inrush currents in lamp and solenoid drivers without secondary breakdown.
Thermal performance	15 W P_C at T_c = 25°C - enables compact layout with minimal external heatsink in industrial 24 V power modules.
Pb-free & halogen-free option	2SC5706-TL-E complies with RoHS and JESD204B material requirements - suitable for automotive and medical-grade assemblies.

Applications

DC/DC Converter Switch	Lamp Driver
Use Scenario: Step-down (buck) converter operating at 200 kHz in industrial PLC power supplies. IC Role / Device Role / Timing Role: Main NPN switching transistor in low-side configuration, driven by PWM controller with 50 ns dead-time. Use Value: 90 mV V_CE(sat) limits conduction loss to 90 mW at 1 A, reducing thermal stress and enabling 6-layer PCB without thermal vias.	Use Scenario: High-intensity LED array driver in emergency lighting with 100–500 ms flash pulses. IC Role / Device Role / Timing Role: Constant-current switch controlling LED string current via emitter resistor feedback. Use Value: 7.5 A I_CP rating supports 300 ms flash bursts at 5 A, eliminating need for parallel devices or derating.
Motor Driver (H-Bridge Leg)	Relay Driver
Use Scenario: 24 V brushed DC motor control in HVAC damper actuators with bidirectional PWM. IC Role / Device Role / Timing Role: Low-side switch in half-bridge leg; paired with complementary PNP (2SA2039-TL-E) for full H-bridge. Use Value: 400 MHz f_T and 20 ns t_f enable clean 20 kHz PWM edges, minimizing audible noise and MOSFET body-diode conduction.	Use Scenario: 12 V automotive relay coil interface in body control module with reverse-polarity protection. IC Role / Device Role / Timing Role: Saturated switch providing 100 mA coil current with <100 ns turn-off to prevent contact arcing. Use Value: 300 ns storage time (t_stg) and 20 ns fall time ensure relay de-energization within 350 ns, meeting ISO 16750-2 transient immunity requirements.

DC/DC Converter Switch

Lamp Driver

Use Scenario: Step-down (buck) converter operating at 200 kHz in industrial PLC power supplies.

IC Role / Device Role / Timing Role: Main NPN switching transistor in low-side configuration, driven by PWM controller with 50 ns dead-time.

Use Value: 90 mV V_CE(sat) limits conduction loss to 90 mW at 1 A, reducing thermal stress and enabling 6-layer PCB without thermal vias.

Use Scenario: High-intensity LED array driver in emergency lighting with 100–500 ms flash pulses.

IC Role / Device Role / Timing Role: Constant-current switch controlling LED string current via emitter resistor feedback.

Use Value: 7.5 A I_CP rating supports 300 ms flash bursts at 5 A, eliminating need for parallel devices or derating.

Motor Driver (H-Bridge Leg)

Relay Driver

Use Scenario: 24 V brushed DC motor control in HVAC damper actuators with bidirectional PWM.

IC Role / Device Role / Timing Role: Low-side switch in half-bridge leg; paired with complementary PNP (2SA2039-TL-E) for full H-bridge.

Use Value: 400 MHz f_T and 20 ns t_f enable clean 20 kHz PWM edges, minimizing audible noise and MOSFET body-diode conduction.

Use Scenario: 12 V automotive relay coil interface in body control module with reverse-polarity protection.

IC Role / Device Role / Timing Role: Saturated switch providing 100 mA coil current with <100 ns turn-off to prevent contact arcing.

Use Value: 300 ns storage time (t_stg) and 20 ns fall time ensure relay de-energization within 350 ns, meeting ISO 16750-2 transient immunity requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
2SC5707-TL-E	V_CEO = 60 V, V_CE(sat) = 110–150 mV @ 1 A/50 mA, same TP-FA package and pinout.	Higher voltage margin suits 48 V telecom systems; slightly higher V_CE(sat) increases conduction loss by ~22%.	Select when system bus voltage exceeds 50 V but thermal budget allows +0.02 W loss at 1 A.
MJD127G	TO-252 NPN, V_CEO = 100 V, I_C = 5 A, V_CE(sat) = 1.5 V @ 3 A - significantly higher saturation voltage.	Designed for linear regulation; unsuitable for high-efficiency switching due to 3× higher V_CE(sat).	Only consider if absolute maximum V_CEO > 60 V is required and efficiency is secondary to ruggedness.

Compared with 2SC5706-TL-E, 2SC5707-TL-E offers extended voltage headroom at minor conduction cost, while MJD127G trades efficiency for breakdown robustness - making 2SC5706-TL-E optimal for 24–48 V switched-mode applications demanding low-loss operation.

Availability

2SC5706-TL-E is available at Aetrix Electronics and suitable for DC/DC converter design, motor driver development, and relay interface circuits requiring stable component supply, RoHS-compliant packaging, and consistent parametric performance across production lots.

Supply support for 2SC5706-TL-E 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 specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and IoT applications.

The 2SC5706-TL-E belongs to onsemi's general-purpose bipolar transistor family engineered for high-current, high-speed switching in industrial power conversion and electromechanical control systems.

FAQ

What is the maximum continuous collector current rating for the 2SC5706-TL-E?

The 2SC5706-TL-E has a maximum continuous collector current (I_C) rating of 5 A at T_c = 25°C. This rating assumes proper PCB thermal management using the exposed collector pads (pins 2 and 4) as thermal paths. At elevated case temperatures, derating applies per the PC–Tc curve in the official datasheet - e.g., ~7.5 A is permitted only as a 100 ms single pulse (I_CP).

Does the 2SC5706-TL-E have a documented pin-to-pin replacement?

No documented pin-to-pin replacement is specified for the 2SC5706-TL-E in onsemi's official documentation. While 2SC5707-TL-E shares identical TP-FA packaging and pinout, its higher V_CEO (60 V) and marginally increased V_CE(sat) constitute a functional alternative - not a drop-in replacement - and require validation in the target circuit's voltage and thermal constraints.

What is the typical gain-bandwidth product (f_T) of the 2SC5706-TL-E and how does it affect switching performance?

The 2SC5706-TL-E has a typical f_T of 400 MHz at V_CE = 10 V and I_C = 500 mA. This high f_T ensures sufficient current gain at frequencies up to ~50 MHz, supporting fast edge rates and stable closed-loop behavior in high-frequency PWM controllers - directly enabling clean 200 kHz+ switching with minimal ringing in buck converter applications.

Can the 2SC5706-TL-E be used in avalanche mode?

The 2SC5706-TL-E is not rated or characterized for repetitive avalanche operation. Its absolute maximum V_CEO = 50 V is a DC breakdown limit under specified test conditions (I_C = 1 mA, R_BE = ∞); operation beyond this voltage risks irreversible damage. For inductive load switching, external clamping (e.g., flyback diode or RC snubber) is mandatory to prevent V_CE overshoot exceeding 50 V.

What are the thermal resistance characteristics of the 2SC5706-TL-E in its TP-FA package?

The 2SC5706-TL-E in TP-FA (TO-252) package has a junction-to-case thermal resistance (R_θJC) of approximately 2.0°C/W when mounted on a 1-inch² 2-oz copper pad with 4 thermal vias. This enables a ΔT_JC of ~30°C at 15 W dissipation - confirming its suitability for high-power density designs where ambient temperature remains ≤75°C and PCB layout follows onsemi's land pattern recommendations.

2SC5706-TL-E Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN

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

Voltage - Collector Emitter Breakdown (Max):: 50 V

Vce Saturation (Max) @ Ib, Ic:: 240mV @ 100mA, 2A

Current - Collector Cutoff (Max):: 1µA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 200 @ 500mA, 2V

Power - Max:: 800 mW

Frequency - Transition:: 400MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TP-FA

2SC5706-TL-E FAQ

1.How can I place an order for 2SC5706-TL-E through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SC5706-TL-E 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 2SC5706-TL-E reliable?

The price and inventory of 2SC5706-TL-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SC5706-TL-E is usually 5 days.

3.What payment methods are accepted for 2SC5706-TL-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SC5706-TL-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SC5706-TL-E?

2SC5706-TL-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SC5706-TL-E 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 2SC5706-TL-E?

For technical support, including 2SC5706-TL-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SC5706-TL-E requirements.

6.How does Aetrix verify that 2SC5706-TL-E is sourced from the original manufacturer or authorized distributors?

All 2SC5706-TL-E 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 2SC5706-TL-E meets industry standards.

7.What is the process for return or replacement of 2SC5706-TL-E?

All 2SC5706-TL-E units undergo pre-shipment inspection (PSI). If there is an issue with 2SC5706-TL-E, 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 2SC5706-TL-E part is unused and in its original packaging.

Return procedure for 2SC5706-TL-E:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

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.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

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…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

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…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

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…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

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 …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

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…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

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…