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

onsemi 2SC4134S-E

Name: 2SC4134S-E
Brand: onsemi
SKU: 2SC4134S-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SC4134S-E

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-251-3 Short Leads, IPAK, TO-251AA

Datasheet:: 2SC4134S-E.pdf

Description:: TRANS NPN 100V 1A TP

Quantity:: RFQ Add To RFQ list

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Inventory:6,575

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Product details

Overview

2SC4134S-E from onsemi is an NPN bipolar junction transistor (BJT) designed for medium-power switching applications, featuring 100 V V_CEO, 1 A continuous collector current, 0.1–0.4 V low V_CE(sat) at I_C = 400 mA / I_B = 40 mA, 120 MHz f_T, and TO-251 (TP) package. It serves as a relay driver or lamp switch in industrial power supplies.

For engineers reviewing the 2SC4134S-E datasheet, pinout, applications, or equivalent options, key selection criteria include verified V_CE(sat) performance at 400 mA, h_FE rank S (140–280), switching time (t_on/t_f/t_stg = 80/50/850 ns), thermal dissipation (10 W at T_C = 25°C), and JEDEC SC-64 compliance.

Technical Context

The 2SC4134S-E operates as a single NPN silicon BJT fabricated using FBET and MBIT processes, enabling high breakdown voltage (V_(BR)CBO = 120 V) and fast switching with t_f = 50 ns. Its DC current gain is binned by h_FE rank - S denotes 140–280 at V_CE = 5 V, I_C = 100 mA.

Thermal design relies on its 10 W P_C rating at case temperature T_C = 25°C and 150°C maximum junction temperature. The device supports pulse operation up to I_CP = 2 A with 100 ms duty cycle, validated under no-heat-sink conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	100 V - Supports switching of 48 V and 72 V DC power rails without avalanche stress
I_C (cont.)	1 A - Rated for continuous load switching in relay coils and LED arrays
V_CE(sat)	0.1–0.4 V @ I_C=400 mA/I_B=40 mA - Minimizes conduction loss and self-heating in compact layouts
f_T	120 MHz - Enables reliable operation in PWM frequencies up to ~10 MHz with margin
h_FE Rank	S (140–280) - Ensures predictable base drive sizing for consistent turn-on behavior
t_f	50 ns - Limits switching transition losses in high-frequency switching power stages
P_C @ T_C	10 W - Allows direct mounting to PCB copper pour for passive thermal management

Pinout & Package

Package: TP (TO-251, JEITA SC-64), surface-mount, 4-pin single-ended leadframe with dual collector terminals for enhanced current handling and thermal path.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input requiring 40 mA I_B to saturate at 400 mA I_C; referenced to emitter
2	Collector	Main high-side current path; electrically identical to Pin 4; paralleled for lower R_DS(on)-eq
3	Emitter	Power return node; common reference for base drive and load current
4	Collector	Second collector terminal - must be connected to same net as Pin 2 to meet rated I_C and P_C

Key Features

Feature	Design Value
Low V_CE(sat)	0.1–0.4 V enables <160 mW conduction loss at 400 mA, reducing thermal load in space-constrained designs
Dual collector terminals	Pins 2 and 4 reduce effective lead resistance and improve current sharing, supporting full 1 A rating with standard PCB traces
Fast fall time	50 ns t_f limits energy loss during turn-off, critical for >100 kHz PWM-driven lamp/relay loads
High V_(BR)CBO	120 V withstand allows safe operation with 100 V transients in industrial 48 V systems
Rank-S h_FE	Guaranteed 140–280 gain ensures stable base resistor selection across production lots without recalibration

Applications

Industrial Power Supplies	Electromechanical Relay Drivers
Use Scenario: Step-down DC-DC converter output stage switching in DIN-rail mounted 24/48 V PSUs. IC Role / Device Role / Timing Role: Medium-power NPN switch controlling MOSFET gate drive or optocoupler input. Use Value: Low V_CE(sat) and 1 A rating enable efficient, thermally stable switching without heatsinking at ambient ≤75°C.	Use Scenario: Solid-state replacement for mechanical relays in PLC I/O modules. IC Role / Device Role / Timing Role: High-current interface between microcontroller GPIO and 24 V relay coil. Use Value: 80 ns t_on/50 ns t_f ensures clean coil energization/de-energization, eliminating contact bounce artifacts.
Lamp & LED Load Control	Automated Test Equipment (ATE) Switching
Use Scenario: Constant-current dimming control for 12–48 V incandescent or halogen lamps. IC Role / Device Role / Timing Role: Linear or PWM-controlled series pass element regulating lamp current. Use Value: 150°C T_j rating and 10 W P_C allow sustained linear-mode operation with minimal derating.	Use Scenario: Signal routing matrix in semiconductor test handlers requiring fast, low-leakage switching. IC Role / Device Role / Timing Role: Low-capacitance (8.5 pF Cob), high-isolation BJT multiplexer stage. Use Value: 100 nA I_CBO and 120 MHz f_T support accurate high-speed signal path selection with minimal crosstalk.

Industrial Power Supplies

Electromechanical Relay Drivers

Use Scenario: Step-down DC-DC converter output stage switching in DIN-rail mounted 24/48 V PSUs.

IC Role / Device Role / Timing Role: Medium-power NPN switch controlling MOSFET gate drive or optocoupler input.

Use Value: Low V_CE(sat) and 1 A rating enable efficient, thermally stable switching without heatsinking at ambient ≤75°C.

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

IC Role / Device Role / Timing Role: High-current interface between microcontroller GPIO and 24 V relay coil.

Use Value: 80 ns t_on/50 ns t_f ensures clean coil energization/de-energization, eliminating contact bounce artifacts.

Lamp & LED Load Control

Automated Test Equipment (ATE) Switching

Use Scenario: Constant-current dimming control for 12–48 V incandescent or halogen lamps.

IC Role / Device Role / Timing Role: Linear or PWM-controlled series pass element regulating lamp current.

Use Value: 150°C T_j rating and 10 W P_C allow sustained linear-mode operation with minimal derating.

Use Scenario: Signal routing matrix in semiconductor test handlers requiring fast, low-leakage switching.

IC Role / Device Role / Timing Role: Low-capacitance (8.5 pF Cob), high-isolation BJT multiplexer stage.

Use Value: 100 nA I_CBO and 120 MHz f_T support accurate high-speed signal path selection with minimal crosstalk.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MJD127G	V_CEO = 100 V, I_C = 2 A, V_CE(sat) = 0.5 V @ 1 A - higher saturation voltage, larger TO-252 package	Higher current capability but 25% higher conduction loss; requires larger PCB footprint	Select when >1 A pulsed current is required and board area permits TO-252 layout
2SD1898	V_CEO = 120 V, I_C = 1.5 A, f_T = 100 MHz - wider V_CEO, lower bandwidth, same TP package	Better overvoltage margin but slower switching; suitable where dV/dt stress dominates speed needs	Select when system transients exceed 100 V and 120 MHz f_T is not required

Compared with MJD127G and 2SD1898, the 2SC4134S-E delivers optimal balance of low V_CE(sat), fast t_f, and compact TP footprint - making it preferred for space-constrained 48 V relay/lamp drivers where thermal efficiency and layout density are prioritized.

Availability

2SC4134S-E is available at Aetrix Electronics and suitable for industrial power supplies, electromechanical relay drivers, and lamp/LED load control requiring stable component supply and long-term manufacturing continuity.

Supply support for 2SC4134S-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 2SC4134S-E belongs to onsemi's general-purpose bipolar transistor product line, engineered specifically for high-reliability, medium-power discrete switching in industrial controls and power conversion systems.

FAQ

What is the h_FE range guaranteed for the 2SC4134S-E?

The 2SC4134S-E is binned to Rank S, guaranteeing a DC current gain (h_FE) of 140–280 when measured at V_CE = 5 V and I_C = 100 mA. This range is confirmed per the official onsemi datasheet No. 2510 and applies specifically to the 2SC4134S-E variant - not the T-E or TL-E versions. Designers can rely on this specification for precise base resistor calculation in saturated-switch applications.

Does the 2SC4134S-E have a Pb-free finish?

Yes, the 2SC4134S-E carries a Pb-free finish, as explicitly noted in the "Ordering Information" section of the onsemi datasheet: "2SC4134S-E - Pb Free". This complies with RoHS Directive 2011/65/EU and supports environmentally compliant manufacturing. The marking "2SC4134S-E" on the device body also confirms its Pb-free status per onsemi's packaging standards.

Can Pins 2 and 4 of the 2SC4134S-E be used independently?

No - Pins 2 and 4 are internally connected collector terminals and must be tied to the same net. Using them separately violates the device's absolute maximum ratings and invalidates the 1 A I_C and 10 W P_C specifications. The 2SC4134S-E datasheet's electrical connection diagram and thermal test conditions assume both collector pins are shorted externally, as required for rated performance and reliability.

What is the maximum allowable pulse current for the 2SC4134S-E?

The 2SC4134S-E supports a peak collector current (I_CP) of 2 A under pulsed conditions, defined as 100 ms duration with DC ≤1% duty cycle and T_C = 25°C. This rating is validated in the "Absolute Maximum Ratings" table and illustrated in the transient thermal curve (No. 2510-5/9). Exceeding 2 A or extending pulse width beyond 100 ms risks thermal runaway or bond-wire failure.

Is the 2SC4134S-E pin-compatible with the 2SC4134T-E?

Yes - the 2SC4134S-E and 2SC4134T-E share identical TP (TO-251) package dimensions, pinout, and terminal assignments. The only difference is h_FE binning: S = 140–280, T = 200–400. Both variants use the same land pattern, thermal pad layout, and solder profile. Designers may substitute between them without PCB revision, provided gain requirements align with the selected rank.

2SC4134S-E Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-251-3 Short Leads, IPAK, TO-251AA

Packaging:: Bulk

Product Status:: Obsolete

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 1 A

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

Vce Saturation (Max) @ Ib, Ic:: 400mV @ 40mA, 400mA

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 140 @ 100mA, 5V

Power - Max:: 800 mW

Frequency - Transition:: 120MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TP

2SC4134S-E FAQ

1.How can I place an order for 2SC4134S-E through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SC4134S-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 2SC4134S-E reliable?

The price and inventory of 2SC4134S-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SC4134S-E is usually 5 days.

3.What payment methods are accepted for 2SC4134S-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SC4134S-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SC4134S-E?

2SC4134S-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SC4134S-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 2SC4134S-E?

For technical support, including 2SC4134S-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SC4134S-E requirements.

6.How does Aetrix verify that 2SC4134S-E is sourced from the original manufacturer or authorized distributors?

All 2SC4134S-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 2SC4134S-E meets industry standards.

7.What is the process for return or replacement of 2SC4134S-E?

All 2SC4134S-E units undergo pre-shipment inspection (PSI). If there is an issue with 2SC4134S-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 2SC4134S-E part is unused and in its original packaging.

Return procedure for 2SC4134S-E:

1.Submit a request within 90 days.

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

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