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

onsemi 2SC4135S-TL-E

Name: 2SC4135S-TL-E
Brand: onsemi
SKU: 2SC4135S-TL-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SC4135S-TL-E

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: 2SC4135S-TL-E.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2SC4135S-TL-E from onsemi is an NPN bipolar junction transistor in TP-FA (TO-252) package, rated for 100 V V_CEO, 2 A I_C, 0.13 V typical V_CE(sat) at 1 A/100 mA, 120 MHz f_T, and optimized for high-efficiency switching in power supplies and lamp drivers.

For engineers reviewing the 2SC4135S-TL-E datasheet, pinout, applications, or equivalent options, key selection criteria include low saturation voltage, fast switching (t_on = 80 ns, t_f = 50 ns), TO-252 thermal performance (15 W at T_c = 25°C), and PNP/NPN complementary pairing with 2SA1593S-TL-E.

Technical Context

This NPN transistor uses FBET and MBIT processes to achieve high breakdown voltage (V_(BR)CBO = −120 V) and low V_CE(sat) (−0.13 V typ). It operates with DC current gain h_FE of 100–400 (rank S: 100–200) at V_CE = −5 V, I_C = −100 mA.

Switching behavior is characterized by t_on = 80 ns, t_stg = 1000 ns, and t_f = 50 ns under specified test conditions (I_C = 10I_B, V_R = −5 V, V_CC = 50 V), with Cob = 16 pF at V_CB = −10 V, f = 1 MHz.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	100 V - supports medium-voltage DC-DC and relay drive without derating
I_C	2 A continuous - enables direct control of lamps, solenoids, and small motors
V_CE(sat)	0.13 V typ at 1 A/100 mA - reduces conduction loss and heat generation
f_T	120 MHz - ensures stable operation in high-frequency switching converters
P_C (T_c=25°C)	15 W - allows high-power pulse operation with minimal heatsink requirement
t_f	50 ns - minimizes switching transition time and associated energy loss
C_ob	16 pF at −10 V - limits Miller effect and improves gate-drive compatibility

Pinout & Package

2SC4135S-TL-E is housed in a TP-FA package (JEDEC TO-252, JEITA SC-63), featuring surface-mount construction with exposed drain pad for thermal enhancement. Dimensions: 7.0 × 5.0 × 2.3 mm (L × W × H), mass = 0.282 g.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input requiring ~100 mA drive for full saturation at 1 A collector current
2	Collector	Main current path terminal; electrically connected to pin 4 and thermally tied to exposed pad
3	Emitter	Current return path; referenced to system ground in low-side switch configurations
4	Collector	Dual-collector configuration enhances current handling and thermal dissipation

Key Features

Feature	Design Value
Low V_CE(sat)	0.13 V typical enables >98% efficiency in 12 V load-switching applications
High V_(BR)CBO	120 V rating provides 20% margin over 100 V rail, improving surge robustness
Fast switching	80 ns turn-on + 50 ns fall time supports >1 MHz PWM operation with low EMI
TP-FA package	TO-252 footprint with enhanced thermal pad delivers 15 W dissipation at T_c = 25°C
Complementary pair	Designed for matched use with 2SA1593S-TL-E in H-bridge and push-pull topologies

Applications

Power Supply Switching	Lamp Driver
Use Scenario: High-efficiency DC-DC converter output stage in industrial power modules. IC Role / Device Role / Timing Role: NPN switching transistor operating in saturation/cutoff mode at 100–500 kHz. Use Value: 0.13 V V_CE(sat) reduces conduction loss by 35% vs. standard 0.2 V transistors at 1 A.	Use Scenario: LED array dimming circuit in commercial lighting fixtures. IC Role / Device Role / Timing Role: Constant-current switch controlling up to 2 A through parallel LED strings. Use Value: 120 MHz f_T ensures clean PWM edge fidelity at 1–10 kHz dimming frequencies.
Relay Driver	Motor Control (Small DC)
Use Scenario: Solid-state replacement for electromechanical relays in PLC I/O modules. IC Role / Device Role / Timing Role: Low-side switch driving 24 V/1.5 A relay coils with flyback protection. Use Value: 1000 ns storage time enables reliable 10 Hz switching without coil remnant current issues.	Use Scenario: Bidirectional drive for 12 V brushed DC motors in HVAC actuators. IC Role / Device Role / Timing Role: One leg of half-H-bridge, paired with 2SA1593S-TL-E for direction control. Use Value: Matched h_FE range (100–200, Rank S) ensures balanced current sharing and thermal symmetry.

Power Supply Switching

Lamp Driver

Use Scenario: High-efficiency DC-DC converter output stage in industrial power modules.

IC Role / Device Role / Timing Role: NPN switching transistor operating in saturation/cutoff mode at 100–500 kHz.

Use Value: 0.13 V V_CE(sat) reduces conduction loss by 35% vs. standard 0.2 V transistors at 1 A.

Use Scenario: LED array dimming circuit in commercial lighting fixtures.

IC Role / Device Role / Timing Role: Constant-current switch controlling up to 2 A through parallel LED strings.

Use Value: 120 MHz f_T ensures clean PWM edge fidelity at 1–10 kHz dimming frequencies.

Relay Driver

Motor Control (Small DC)

Use Scenario: Solid-state replacement for electromechanical relays in PLC I/O modules.

IC Role / Device Role / Timing Role: Low-side switch driving 24 V/1.5 A relay coils with flyback protection.

Use Value: 1000 ns storage time enables reliable 10 Hz switching without coil remnant current issues.

Use Scenario: Bidirectional drive for 12 V brushed DC motors in HVAC actuators.

IC Role / Device Role / Timing Role: One leg of half-H-bridge, paired with 2SA1593S-TL-E for direction control.

Use Value: Matched h_FE range (100–200, Rank S) ensures balanced current sharing and thermal symmetry.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
2SC4135T-TL-E	Higher h_FE range (200–400, Rank T) and slightly higher V_CE(sat) (0.15 V max)	Better for low-base-drive designs; less suitable where tight V_CE(sat) tolerance is critical	Select when base drive current is limited and gain consistency across temperature is prioritized
MJD127G	Same TO-252 package, but lower V_CEO (80 V), higher V_CE(sat) (0.5 V min), and slower f_T (3 MHz)	Acceptable only in ≤24 V systems with relaxed efficiency targets	Choose only if cost sensitivity outweighs performance requirements and voltage headroom is sufficient

Compared with 2SC4135T-TL-E and MJD127G, the 2SC4135S-TL-E offers optimal balance of low saturation voltage, 100 V rating, and 120 MHz bandwidth-making it preferred for 12–48 V switching applications demanding both efficiency and speed.

Availability

2SC4135S-TL-E is available at Aetrix Electronics and suitable for power supplies, lamp drivers, and relay drivers requiring stable component supply, RoHS-compliant packaging, and consistent parametric performance across production lots.

Supply support for 2SC4135S-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 focused on energy-efficient innovation for automotive, industrial, cloud, and IoT applications.

The 2SC4135S-TL-E belongs to onsemi's general-purpose bipolar transistor product line, engineered for high-reliability switching in compact, thermally constrained power interfaces.

FAQ

What is the maximum continuous collector current for the 2SC4135S-TL-E?

The 2SC4135S-TL-E is rated for 2 A continuous collector current (I_C) at T_a = 25°C. At case temperature T_c = 25°C, its power dissipation limit rises to 15 W, supporting pulsed operation beyond 2 A. Derating is required above ambient temperatures-consult the PC–Ta curve in the official 2SC4135 datasheet for precise thermal design margins.

Is the 2SC4135S-TL-E pin-compatible with the 2SA1593S-TL-E?

No-the 2SC4135S-TL-E (NPN) and 2SA1593S-TL-E (PNP) share identical TP-FA (TO-252) mechanical footprint and pin numbering (1=Base, 2&4=Collector, 3=Emitter), but their polarity and biasing requirements differ fundamentally. They are complementary-not interchangeable-and must be used in matched pairs for push-pull or H-bridge circuits.

What does the 'S' suffix indicate in 2SC4135S-TL-E?

The 'S' in 2SC4135S-TL-E denotes the h_FE rank: 100–200 at V_CE = −5 V and I_C = −100 mA. This distinguishes it from the 'T' variant (200–400), enabling predictable gain selection for base-drive design. Both variants share identical absolute maximum ratings, switching times, and package dimensions.

Can the 2SC4135S-TL-E be used in linear amplifier applications?

The 2SC4135S-TL-E is optimized for switching-not linear amplification-with specified parameters (e.g., f_T, V_CE(sat), t_f) reflecting saturated-mode operation. While functional in Class-A or AB stages, its h_FE variation across current and temperature, plus lack of linearity characterization, makes it unsuitable for precision analog signal amplification. Use dedicated RF or audio transistors instead.

Does the 2SC4135S-TL-E require a heatsink in typical 1 A switching applications?

In surface-mount applications with adequate PCB copper area (≥250 mm² 2-oz copper connected to the exposed collector pad), the 2SC4135S-TL-E typically operates within safe junction temperature limits at 1 A continuous without an external heatsink. For sustained 2 A operation or ambient temperatures >60°C, thermal simulation using the θ_JA = 62.5°C/W (standard JEDEC 2S2P board) is recommended before final layout.

2SC4135S-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:: Obsolete

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:: 140 @ 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

2SC4135S-TL-E FAQ

1.How can I place an order for 2SC4135S-TL-E through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SC4135S-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 2SC4135S-TL-E reliable?

The price and inventory of 2SC4135S-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 2SC4135S-TL-E is usually 5 days.

3.What payment methods are accepted for 2SC4135S-TL-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SC4135S-TL-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SC4135S-TL-E?

2SC4135S-TL-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SC4135S-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 2SC4135S-TL-E?

For technical support, including 2SC4135S-TL-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SC4135S-TL-E requirements.

6.How does Aetrix verify that 2SC4135S-TL-E is sourced from the original manufacturer or authorized distributors?

All 2SC4135S-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 2SC4135S-TL-E meets industry standards.

7.What is the process for return or replacement of 2SC4135S-TL-E?

All 2SC4135S-TL-E units undergo pre-shipment inspection (PSI). If there is an issue with 2SC4135S-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 2SC4135S-TL-E part is unused and in its original packaging.

Return procedure for 2SC4135S-TL-E:

1.Submit a request within 90 days.

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

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