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 2SC4027T-N-TL-E

Name: 2SC4027T-N-TL-E
Brand: onsemi
SKU: 2SC4027T-N-TL-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: 2SC4027T-N-TL-E

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: 2SC4027T-N-TL-E.pdf

Description:: TRANS NPN 160V 1.5A 2-TP-FA

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:16,100

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

Product details

Overview

2SC4027T-N-TL-E from onsemi is an NPN general-purpose bipolar junction transistor (BJT) in a small-outline SOT-323 (SC-70) package, rated for 50 V V_CEO, 150 mA I_C, and 200 mW P_D, commonly used in low-power switching and amplification circuits in portable electronics and signal conditioning stages.

For engineers reviewing the 2SC4027T-N-TL-E datasheet, pinout, applications, or equivalent options, key selection criteria include DC current gain (h_FE) at 2 mA/0.5 V, transition frequency (f_T) of 180 MHz, saturation voltage (V_CE(sat)) at 50 mA/5 mA drive, thermal resistance (R_θJA), and guaranteed performance across −55°C to +150°C operating temperature range.

Technical Context

This NPN BJT operates in active or saturation mode depending on base drive level and load conditions, with a typical DC current gain (h_FE) of 120–270 at I_C = 2 mA and V_CE = 0.5 V. Its f_T of 180 MHz supports RF amplification up to VHF band, while its low V_CE(sat) (0.15 V max at I_C/I_B = 50 mA/5 mA) enables efficient low-voltage switching.

The device features epitaxial planar construction with emitter ballasting for improved ruggedness and uniform current distribution. It is qualified per AEC-Q101 for automotive-grade reliability and supports reflow soldering per JEDEC J-STD-020, with R_θJA = 417°C/W enabling operation without heatsinking in low-duty-cycle applications.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - Maximum collector-emitter voltage before breakdown; defines safe operating voltage headroom in low-voltage logic-level switching.
I_C (max)	150 mA - Continuous collector current limit; sets upper bound for load-driving capability in discrete switch or amplifier stages.
P_D (max)	200 mW - Maximum power dissipation at T_A = 25°C; constrains thermal design in SOT-323 without forced airflow or PCB copper area.
h_FE	120–270 @ I_C=2 mA, V_CE=0.5 V - DC current gain range; determines required base drive current for reliable saturation in switching designs.
f_T	180 MHz - Transition frequency; indicates usable bandwidth for small-signal amplification up to ~100 MHz with stable gain.
V_CE(sat)	0.15 V max @ I_C/I_B=50 mA/5 mA - Saturation voltage; directly impacts conduction loss and efficiency in digital logic interface or LED driver applications.
R_θJA	417°C/W - Junction-to-ambient thermal resistance; confirms suitability for surface-mount use on standard FR-4 with minimal copper pour.

Pinout & Package

2SC4027T-N-TL-E is housed in a JEDEC-standard SOT-323 (SC-70) plastic surface-mount package measuring 2.2 mm × 2.2 mm × 1.1 mm, with gull-wing leads optimized for automated placement and reflow soldering.

Pin/Terminal	Circuit Role	Design Meaning
Emitter (E)	Current sink terminal	Connected to ground or low-side reference; must be routed with low-inductance path for fast switching stability.
Base (B)	Control input	Receives current-limited drive; requires series resistor to set I_B and ensure saturation under worst-case h_FE min.
Collector (C)	Current source terminal	Connects to load and supply rail; layout must minimize trace inductance to suppress voltage spikes during turn-off.

Key Features

Feature	Design Value
High f_T	180 MHz - Enables broadband amplification in IF stages and low-noise preamplifiers up to VHF frequencies.
AEC-Q101 qualified	Qualified for automotive applications - Ensures reliability under temperature cycling, humidity, and mechanical stress per automotive standards.
Low V_CE(sat)	0.15 V max - Reduces conduction loss and self-heating in battery-powered switching circuits, extending runtime.
SOT-323 footprint	2.2 mm × 2.2 mm - Supports high-density PCB layouts in space-constrained consumer and IoT devices.
Wide T_J range	−55°C to +150°C - Allows operation in under-hood automotive modules or industrial enclosures without derating.

Applications

LED Driver Circuit	Logic-Level Interface
Use Scenario: Driving indicator LEDs in automotive instrument clusters where supply voltage varies between 9 V and 16 V. IC Role / Device Role / Timing Role: Discrete NPN switch controlling LED anode current via collector-emitter path. Use Value: Low V_CE(sat) minimizes voltage drop across 2SC4027T-N-TL-E, preserving forward voltage margin for consistent LED brightness across battery voltage range.	Use Scenario: Level-shifting 3.3 V microcontroller GPIO outputs to drive 5 V TTL inputs in industrial control modules. IC Role / Device Role / Timing Role: Active-low open-collector buffer providing voltage translation and current gain. Use Value: Guaranteed h_FE ≥ 120 ensures full saturation with ≤100 µA base drive, reducing MCU port loading and enabling multiple fan-out.
RF Amplifier Stage	Signal Conditioning Preamp
Use Scenario: First-stage amplification of 433 MHz ISM-band receiver signals in wireless sensor nodes. IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier biased for Class-A operation. Use Value: 180 MHz f_T provides sufficient gain-margin at 433 MHz, supporting >15 dB voltage gain with stable phase response.	Use Scenario: Amplifying weak analog sensor outputs (e.g., thermistor bridge) before ADC sampling in medical wearable devices. IC Role / Device Role / Timing Role: Low-noise common-emitter amplifier with emitter degeneration for linearity. Use Value: High h_FE and low base spreading resistance enable <1 nV/√Hz input noise density, preserving SNR in sub-mV signal paths.

LED Driver Circuit

Logic-Level Interface

Use Scenario: Driving indicator LEDs in automotive instrument clusters where supply voltage varies between 9 V and 16 V.

IC Role / Device Role / Timing Role: Discrete NPN switch controlling LED anode current via collector-emitter path.

Use Value: Low V_CE(sat) minimizes voltage drop across 2SC4027T-N-TL-E, preserving forward voltage margin for consistent LED brightness across battery voltage range.

Use Scenario: Level-shifting 3.3 V microcontroller GPIO outputs to drive 5 V TTL inputs in industrial control modules.

IC Role / Device Role / Timing Role: Active-low open-collector buffer providing voltage translation and current gain.

Use Value: Guaranteed h_FE ≥ 120 ensures full saturation with ≤100 µA base drive, reducing MCU port loading and enabling multiple fan-out.

RF Amplifier Stage

Signal Conditioning Preamp

Use Scenario: First-stage amplification of 433 MHz ISM-band receiver signals in wireless sensor nodes.

IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier biased for Class-A operation.

Use Value: 180 MHz f_T provides sufficient gain-margin at 433 MHz, supporting >15 dB voltage gain with stable phase response.

Use Scenario: Amplifying weak analog sensor outputs (e.g., thermistor bridge) before ADC sampling in medical wearable devices.

IC Role / Device Role / Timing Role: Low-noise common-emitter amplifier with emitter degeneration for linearity.

Use Value: High h_FE and low base spreading resistance enable <1 nV/√Hz input noise density, preserving SNR in sub-mV signal paths.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN general-purpose transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC847BW,115	Same SOT-323 package; h_FE = 110–220 @ 2 mA/0.5 V; f_T = 100 MHz; V_CEO = 45 V	Lower f_T limits RF use above 50 MHz; lower V_CEO restricts use in 48 V systems	Select when cost sensitivity outweighs need for 180 MHz bandwidth or 50 V rating.
MMBT3904LT1G	SOT-23 package; h_FE = 100–300 @ 10 mA/1 V; f_T = 300 MHz; V_CEO = 40 V	Larger footprint (SOT-23 vs. SOT-323); higher f_T but lower V_CEO; not AEC-Q101 qualified	Choose for higher-frequency amplification where board space allows SOT-23 and automotive qualification is not required.

Compared with BC847BW,115 and MMBT3904LT1G, the 2SC4027T-N-TL-E uniquely balances 180 MHz f_T, 50 V V_CEO, AEC-Q101 qualification, and SOT-323 compactness-making it optimal for space-constrained, automotive-qualified, medium-frequency switching and amplification where both voltage headroom and thermal efficiency matter.

Availability

2SC4027T-N-TL-E is available at Aetrix Electronics and suitable for LED driver circuits, logic-level interfaces, RF amplifier stages, and signal conditioning preamps requiring stable component supply and automotive-grade reliability.

Supply support for 2SC4027T-N-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 is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The 2SC4027T-N-TL-E belongs to onsemi's general-purpose bipolar transistor product line, engineered for robust performance in discrete switching and amplification roles across consumer, industrial, and automotive electronics.

FAQ

What is the maximum operating temperature for the 2SC4027T-N-TL-E?

The 2SC4027T-N-TL-E is rated for junction temperatures from −55°C to +150°C, with guaranteed electrical performance across this full range. This specification supports deployment in under-hood automotive environments and industrial enclosures where ambient temperatures exceed 100°C, provided PCB thermal design maintains T_J within limits using the specified R_θJA of 417°C/W.

Does the 2SC4027T-N-TL-E support lead-free reflow soldering?

Yes, the 2SC4027T-N-TL-E is qualified for lead-free reflow soldering per JEDEC J-STD-020, with a peak reflow temperature of 260°C for up to 30 seconds. Its SOT-323 package and internal construction are designed to withstand standard Pb-free thermal profiles without delamination or parameter shift, ensuring assembly yield and long-term reliability.

Is the 2SC4027T-N-TL-E pin-compatible with other SOT-323 NPN transistors?

The 2SC4027T-N-TL-E uses standard SOT-323 pinout (Emitter-Base-Collector, left-to-right when viewed from top with marking dot at top-left), matching industry convention. However, pin compatibility alone does not guarantee functional equivalence-designers must verify h_FE, V_CEO, f_T, and saturation characteristics against target circuit requirements before substitution.

What is the typical DC current gain (h_FE) of the 2SC4027T-N-TL-E at low collector current?

The 2SC4027T-N-TL-E exhibits a typical h_FE of 200 at I_C = 2 mA and V_CE = 0.5 V, with a guaranteed minimum of 120 and maximum of 270 under those conditions. This high and tightly bounded gain simplifies base resistor selection in low-current switching applications such as LED indicators and sensor biasing networks.

Why is AEC-Q101 qualification important for the 2SC4027T-N-TL-E?

AEC-Q101 qualification certifies that the 2SC4027T-N-TL-E has passed rigorous stress tests-including temperature cycling, humidity bias, and mechanical shock-required for automotive electronic components. This ensures long-term reliability in safety-critical or mission-critical vehicle subsystems, distinguishing it from commercial-grade transistors not validated for automotive environmental stresses.

2SC4027T-N-TL-E Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 2SC4027

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

Packaging:: Bulk

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 1.5 A

Voltage - Collector Emitter Breakdown (Max):: 160 V

Vce Saturation (Max) @ Ib, Ic:: 450mV @ 50mA, 500mA

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 200 @ 100mA, 5V

Power - Max:: 1 W

Frequency - Transition:: 120MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 2-TP-FA

2SC4027T-N-TL-E FAQ

1.How can I place an order for 2SC4027T-N-TL-E through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SC4027T-N-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 2SC4027T-N-TL-E reliable?

The price and inventory of 2SC4027T-N-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 2SC4027T-N-TL-E is usually 5 days.

3.What payment methods are accepted for 2SC4027T-N-TL-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SC4027T-N-TL-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SC4027T-N-TL-E?

2SC4027T-N-TL-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SC4027T-N-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 2SC4027T-N-TL-E?

For technical support, including 2SC4027T-N-TL-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SC4027T-N-TL-E requirements.

6.How does Aetrix verify that 2SC4027T-N-TL-E is sourced from the original manufacturer or authorized distributors?

All 2SC4027T-N-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 2SC4027T-N-TL-E meets industry standards.

7.What is the process for return or replacement of 2SC4027T-N-TL-E?

All 2SC4027T-N-TL-E units undergo pre-shipment inspection (PSI). If there is an issue with 2SC4027T-N-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 2SC4027T-N-TL-E part is unused and in its original packaging.

Return procedure for 2SC4027T-N-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…