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 2SC4135T-TL-E

Name: 2SC4135T-TL-E
Brand: onsemi
SKU: 2SC4135T-TL-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: 2SC4135T-TL-E

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: 2SC4135T-TL-E.pdf

Description:: TRANS NPN 100V 2A TP-FA

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,291

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

Product details

Overview

2SC4135T-TL-E from onsemi is an NPN bipolar junction transistor (BJT) designed for medium-power switching applications, featuring 100 V V_CEO, 2 A I_C, low 0.13 V typical V_CE(sat) at I_C = 1 A / I_B = 100 mA, 120 MHz f_T, and housed in the slim TP-FA (TO-252) surface-mount package. It is used in relay drivers, lamp drivers, and DC-DC converter output stages where fast switching and low conduction loss are required.

For engineers reviewing the 2SC4135T-TL-E datasheet, pinout, applications, or equivalent options, key selection criteria include verified V_CE(sat) performance at 1 A, h_FE rank T (200–400), TO-252 thermal capability under 15 W P_C at T_c = 25°C, and compatibility with high-density PCB layouts enabled by its 7.0 × 5.0 mm footprint.

Technical Context

This device belongs to the complementary 2SA1593/2SC4135 pair, fabricated using onsemi's FBET and MBIT processes to achieve high breakdown voltage and fast switching. Its TP-FA package features a 4-pin configuration with dual collector terminals for enhanced current handling and thermal dissipation.

The transistor operates with guaranteed h_FE of 200–400 (Rank T), 120 MHz gain-bandwidth product at V_CE = −10 V / I_C = −100 mA, and switching times of t_on = 80 ns, t_stg = 1000 ns, and t_f = 50 ns - enabling use in 100 kHz–500 kHz hard-switched power stages.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	100 V - supports operation in 48 V and 60 V bus systems with margin against transients.
I_C	2 A continuous - delivers sufficient drive current for relays, solenoids, and LED arrays without forced cooling.
V_CE(sat)	0.13 V typ. @ I_C = 1 A / I_B = 100 mA - reduces conduction loss to <130 mW, improving efficiency in linear and saturated switching.
f_T	120 MHz - enables stable amplification and fast edge control in pulse-width modulation circuits.
h_FE Rank	T (200–400) - ensures predictable base drive requirements and consistent gain across production lots.
P_C @ T_c = 25°C	15 W - allows direct mounting to copper pour or small heatsink for sustained 2 A operation.
C_ob	16 pF @ V_CB = 10 V - limits Miller capacitance to support clean turn-off in inductive load switching.

Pinout & Package

Package: TP-FA (JEDEC TO-252, JEITA SC-63), 4-terminal surface-mount package with dual collector leads for improved current sharing and thermal path to PCB.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input requiring ~100 mA base drive for full 1 A collector conduction; low V_BE(sat) of −0.85 V typ. minimizes driver loss.
2	Collector	Main high-current output terminal; electrically identical to Pin 4 - paralleling both improves current capacity and thermal spreading.
3	Emitter	Reference node for load return path; tied directly to ground or low-side shunt in switch-mode topologies.
4	Collector	Second collector terminal, internally connected to Pin 2 - must be soldered to same net for rated 2 A operation and thermal derating compliance.

Key Features

Feature	Design Value
Low V_CE(sat)	0.13 V typical at 1 A enables <130 mW conduction loss, reducing thermal stress in compact enclosures.
High f_T	120 MHz bandwidth supports clean square-wave switching up to 500 kHz without excessive rise/fall time degradation.
Dual-collector TP-FA package	Two collector pins (2 & 4) lower effective thermal resistance and allow 2 A continuous current with standard 2-oz copper PCB layout.
h_FE Rank T binning	Guaranteed 200–400 h_FE at V_CE = −5 V / I_C = −100 mA ensures consistent base drive design across production batches.
Fast switching	80 ns turn-on, 50 ns fall time, and 1000 ns storage time enable efficient operation in PWM-controlled power stages.

Applications

Relay Driver Circuit	Lamp Driver Module
Use Scenario: Driving 24 V/1 A electromagnetic relay coils in industrial PLC output modules. IC Role / Device Role / Timing Role: NPN switch operating in saturation mode to close relay contacts with <100 µs response. Use Value: Low 0.13 V V_CE(sat) minimizes coil voltage drop, ensuring reliable pull-in at minimum supply voltage.	Use Scenario: Controlling 12 V/2 A incandescent or halogen lamps in automotive interior lighting. IC Role / Device Role / Timing Role: High-current linear switch managing lamp brightness via PWM duty cycle. Use Value: 2 A I_C rating and 15 W P_C allow direct lamp connection without external heat sinking.
DC-DC Converter Output Stage	Power Supply Protection Switch
Use Scenario: Low-side synchronous rectifier or main switch in non-isolated buck converters (48 V input → 5–12 V output). IC Role / Device Role / Timing Role: Fast-switching NPN transistor handling peak currents up to 2 A at 200 kHz. Use Value: 120 MHz f_T and 50 ns fall time maintain waveform fidelity and reduce switching losses.	Use Scenario: Overcurrent protection switch in 24 V industrial power distribution units. IC Role / Device Role / Timing Role: Current-limiting series pass element activated by fault detection circuitry. Use Value: 100 V V_CEO withstands load dump transients; 100 nA I_CBO ensures negligible leakage during standby.

Relay Driver Circuit

Lamp Driver Module

Use Scenario: Driving 24 V/1 A electromagnetic relay coils in industrial PLC output modules.

IC Role / Device Role / Timing Role: NPN switch operating in saturation mode to close relay contacts with <100 µs response.

Use Value: Low 0.13 V V_CE(sat) minimizes coil voltage drop, ensuring reliable pull-in at minimum supply voltage.

Use Scenario: Controlling 12 V/2 A incandescent or halogen lamps in automotive interior lighting.

IC Role / Device Role / Timing Role: High-current linear switch managing lamp brightness via PWM duty cycle.

Use Value: 2 A I_C rating and 15 W P_C allow direct lamp connection without external heat sinking.

DC-DC Converter Output Stage

Power Supply Protection Switch

Use Scenario: Low-side synchronous rectifier or main switch in non-isolated buck converters (48 V input → 5–12 V output).

IC Role / Device Role / Timing Role: Fast-switching NPN transistor handling peak currents up to 2 A at 200 kHz.

Use Value: 120 MHz f_T and 50 ns fall time maintain waveform fidelity and reduce switching losses.

Use Scenario: Overcurrent protection switch in 24 V industrial power distribution units.

IC Role / Device Role / Timing Role: Current-limiting series pass element activated by fault detection circuitry.

Use Value: 100 V V_CEO withstands load dump transients; 100 nA I_CBO ensures negligible leakage during standby.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN medium-power switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MJD127G	Higher V_CEO (100 V same), but higher V_CE(sat) (0.5 V min @ 1 A) and lower f_T (3 MHz); TO-252 package, no dual collector.	Less suitable for high-efficiency, high-frequency switching; better for simple on/off control with relaxed loss budgets.	Select MJD127G only when absolute minimum cost is prioritized over conduction loss and switching speed.
2SC4135S-TL-E	Same TP-FA package and electrical specs, but h_FE Rank S (140–280); otherwise identical pinout, ratings, and thermal performance.	Acceptable where lower gain consistency is tolerable; requires recalculating base drive for worst-case h_FE = 140.	Choose 2SC4135S-TL-E if design accommodates wider h_FE variation and needs lower-cost binning.

Compared with MJD127G and 2SC4135S-TL-E, the 2SC4135T-TL-E offers superior switching speed and tighter h_FE control-critical for high-efficiency, thermally constrained designs-while maintaining identical TO-252 footprint and mounting compatibility.

Availability

2SC4135T-TL-E is available at Aetrix Electronics and suitable for relay drivers, lamp drivers, and DC-DC converter output stages requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for 2SC4135T-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 2SC4135T-TL-E belongs to onsemi's general-purpose bipolar transistor portfolio, engineered for robust medium-power switching in space-constrained industrial and power management systems.

FAQ

What is the maximum continuous collector current rating for the 2SC4135T-TL-E?

The 2SC4135T-TL-E is rated for 2 A continuous collector current (I_C) at T_a = 25°C with proper PCB copper area. Derating applies above 25°C ambient; at T_c = 25°C, it supports 15 W collector dissipation, enabling sustained 2 A operation with adequate heatsinking or thermal pad layout.

Does the 2SC4135T-TL-E have a dual-collector configuration, and how should Pins 2 and 4 be used?

Yes, the 2SC4135T-TL-E uses a TP-FA package with two collector terminals (Pins 2 and 4), internally connected. Both pins must be soldered to the same high-current net to achieve full 2 A rating and optimal thermal transfer to the PCB. Leaving either pin unconnected violates SOA limits and risks premature failure.

What h_FE range does the 'T' suffix indicate in 2SC4135T-TL-E?

The 'T' suffix denotes h_FE Rank T, specifying a guaranteed DC current gain of 200–400 at V_CE = −5 V and I_C = −100 mA. This tighter binning improves predictability of base drive requirements compared to Rank S (140–280) or Rank R (100–200) variants of the 2SC4135T-TL-E family.

Is the 2SC4135T-TL-E RoHS-compliant and lead-free?

Yes, the 2SC4135T-TL-E is RoHS-compliant and lead-free, as confirmed by the "Pb Free" marking in the ordering information and compliance documentation (Ordering Number EN2511B). The "-E" suffix explicitly indicates lead-free termination per JEDEC J-STD-609.

How does the 2SC4135T-TL-E compare to the 2SC4135S-TL-E in terms of switching performance?

The 2SC4135T-TL-E and 2SC4135S-TL-E share identical switching parameters - including t_on = 80 ns, t_f = 50 ns, and f_T = 120 MHz - because they differ only in h_FE binning (T vs. S). Switching behavior is unaffected by gain rank; both deliver the same dynamic performance in properly biased circuits.

2SC4135T-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):: 2 A

Voltage - Collector Emitter Breakdown (Max):: 100 V

Vce Saturation (Max) @ Ib, Ic:: 400mV @ 100mA, 1A

Current - Collector Cutoff (Max):: 100nA (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:: TP-FA

2SC4135T-TL-E FAQ

1.How can I place an order for 2SC4135T-TL-E through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SC4135T-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 2SC4135T-TL-E reliable?

The price and inventory of 2SC4135T-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 2SC4135T-TL-E is usually 5 days.

3.What payment methods are accepted for 2SC4135T-TL-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SC4135T-TL-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SC4135T-TL-E?

2SC4135T-TL-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SC4135T-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 2SC4135T-TL-E?

For technical support, including 2SC4135T-TL-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SC4135T-TL-E requirements.

6.How does Aetrix verify that 2SC4135T-TL-E is sourced from the original manufacturer or authorized distributors?

All 2SC4135T-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 2SC4135T-TL-E meets industry standards.

7.What is the process for return or replacement of 2SC4135T-TL-E?

All 2SC4135T-TL-E units undergo pre-shipment inspection (PSI). If there is an issue with 2SC4135T-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 2SC4135T-TL-E part is unused and in its original packaging.

Return procedure for 2SC4135T-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…