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

onsemi 2N4403_J60Z

Name: 2N4403_J60Z
Brand: onsemi
SKU: 2N4403_J60Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2N4403_J60Z

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-226-3, TO-92-3 (TO-226AA)

Datasheet:: 2N4403_J60Z.pdf

Description:: TRANS PNP 40V 0.6A TO-92-3

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Product details

Overview

2N4403_J60Z from Fairchild Semiconductor is a PNP bipolar junction transistor (BJT) designed for general-purpose amplification and switching applications up to 500 mA collector current. It features V_CEO = 40 V, V_CBO = 40 V, V_EBO = 5.0 V, I_C = 600 mA continuous, and f_T = 200 MHz - enabling use in low-voltage logic interface circuits, discrete amplifier stages, and relay drivers.

For engineers reviewing the 2N4403_J60Z datasheet, pinout, applications, or equivalent options, key selection considerations include its TO-92 package, PNP polarity, saturation voltage (V_CE(sat) = 0.4 V @ 150 mA/15 mA), thermal resistance (R_θJA = 200 °C/W), and guaranteed h_FE range of 30–300 across operating currents.

Technical Context

The 2N4403_J60Z operates as a silicon PNP BJT with common-emitter configuration, optimized for linear amplification and saturated switching. Its DC current gain (h_FE) varies from 30 at I_C = 500 mA to 300 at I_C = 1 mA, and it delivers fast switching performance with t_d = 15 ns, t_r = 20 ns, t_s = 225 ns, and t_f = 30 ns under specified test conditions (V_CC = 30 V, I_C = 150 mA).

Thermal design is constrained by R_θJA = 200 °C/W (TO-92, free-air), limiting continuous power dissipation to 625 mW at 25°C with 5.0 mW/°C derating above that temperature. Junction temperature must remain within –55°C to +150°C for reliable operation.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	40 V - Maximum allowable collector-emitter voltage before breakdown; defines safe operating voltage headroom in switching or amplifier designs.
I_C (continuous)	600 mA - Absolute maximum DC collector current; usable up to 500 mA per device functional specification.
h_FE	30–300 - DC current gain range across 1 mA–500 mA; enables predictable biasing in both small-signal and power-switching configurations.
f_T	200 MHz - Unity-gain bandwidth at I_C = 20 mA, V_CE = 10 V; supports audio-frequency amplification and fast digital switching.
V_CE(sat)	0.4 V @ 150 mA/15 mA - Low saturation voltage ensures minimal conduction loss and heat generation in switch-mode operation.
R_θJA	200 °C/W - Junction-to-ambient thermal resistance in TO-92 package; determines required heatsinking or ambient limits for sustained power handling.

Pinout & Package

2N4403_J60Z is packaged in TO-92 - a through-hole, three-lead plastic case with standard lead orientation (flat side facing viewer, leads down): Emitter (left), Base (center), Collector (right). Pin assignment is fixed and non-reversible.

Pin/Terminal	Circuit Role	Design Meaning
Emitter (E)	Current sink terminal for PNP operation	Connected to higher-potential rail in common-emitter switches; sets reference for base drive and current return path.
Base (B)	Control input for minority-carrier injection	Receives forward-biased current (I_B) to turn on transistor; requires current-limiting resistor to prevent overdrive.
Collector (C)	Output current terminal	Supplies load current when saturated; must be connected to lower-potential node (e.g., ground or negative rail) in PNP switch topology.

Key Features

Feature	Design Value
High DC current gain consistency	h_FE ≥ 30 at I_C = 500 mA ensures stable switching behavior even near maximum rated current.
Low V_CE(sat) at high drive	0.4 V @ I_C/I_B = 10 enables efficient power control with <100 mW conduction loss at 250 mA load.
Fast switching speed	Combined t_d + t_r + t_s + t_f < 300 ns supports >1 MHz digital signal routing and PWM-driven loads.
Wide temperature operation	Rated from –55°C to +150°C junction temperature allows deployment in industrial and automotive under-hood environments.

Applications

Relay Driver Circuit	Discrete Audio Preamp Stage
Use Scenario: Driving electromagnetic relays requiring 10–100 mA coil current in PLC I/O modules or HVAC controllers. IC Role / Device Role / Timing Role: PNP switch configured in common-emitter mode, sinking relay coil current to ground when base is pulled low. Use Value: V_CE(sat) ≤ 0.4 V minimizes power loss and self-heating during continuous duty; h_FE ≥ 100 at 50 mA ensures robust drive margin with low base current.	Use Scenario: Single-transistor preamplifier stage for microphone or sensor signals in battery-powered instrumentation. IC Role / Device Role / Timing Role: Common-emitter amplifier with emitter degeneration, providing 20–40 dB voltage gain at audio frequencies. Use Value: f_T = 200 MHz and h_fe = 60–500 ensure flat frequency response up to 20 kHz; low C_cb = 8.5 pF reduces Miller effect distortion.
Level-Shifting Interface	LED Current Sink Driver
Use Scenario: Translating logic signals between 5 V microcontroller outputs and –12 V analog subsystems in mixed-voltage test equipment. IC Role / Device Role / Timing Role: Inverting level shifter using PNP topology, where base receives TTL/CMOS input and emitter supplies inverted output to negative rail. Use Value: V_EBO = 5.0 V permits safe base-emitter reverse bias up to –5 V; V_CBO = 40 V accommodates full swing across –12 V rails.	Use Scenario: Constant-current sink for indicator LEDs or status displays in industrial panels with 3.3 V or 5 V logic control. IC Role / Device Role / Timing Role: Fixed-current switch with emitter resistor biasing, delivering precise 10–30 mA LED current independent of supply variation. Use Value: Tight h_FE tolerance and low V_BE(sat) = 0.75 V @ 150 mA enable accurate current setting with ±5% stability over temperature.

Relay Driver Circuit

Discrete Audio Preamp Stage

Use Scenario: Driving electromagnetic relays requiring 10–100 mA coil current in PLC I/O modules or HVAC controllers.

IC Role / Device Role / Timing Role: PNP switch configured in common-emitter mode, sinking relay coil current to ground when base is pulled low.

Use Value: V_CE(sat) ≤ 0.4 V minimizes power loss and self-heating during continuous duty; h_FE ≥ 100 at 50 mA ensures robust drive margin with low base current.

Use Scenario: Single-transistor preamplifier stage for microphone or sensor signals in battery-powered instrumentation.

IC Role / Device Role / Timing Role: Common-emitter amplifier with emitter degeneration, providing 20–40 dB voltage gain at audio frequencies.

Use Value: f_T = 200 MHz and h_fe = 60–500 ensure flat frequency response up to 20 kHz; low C_cb = 8.5 pF reduces Miller effect distortion.

Level-Shifting Interface

LED Current Sink Driver

Use Scenario: Translating logic signals between 5 V microcontroller outputs and –12 V analog subsystems in mixed-voltage test equipment.

IC Role / Device Role / Timing Role: Inverting level shifter using PNP topology, where base receives TTL/CMOS input and emitter supplies inverted output to negative rail.

Use Value: V_EBO = 5.0 V permits safe base-emitter reverse bias up to –5 V; V_CBO = 40 V accommodates full swing across –12 V rails.

Use Scenario: Constant-current sink for indicator LEDs or status displays in industrial panels with 3.3 V or 5 V logic control.

IC Role / Device Role / Timing Role: Fixed-current switch with emitter resistor biasing, delivering precise 10–30 mA LED current independent of supply variation.

Use Value: Tight h_FE tolerance and low V_BE(sat) = 0.75 V @ 150 mA enable accurate current setting with ±5% stability over temperature.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP general-purpose amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMBT4403	SOT-23 surface-mount package; identical electrical specs but lower P_D (350 mW) and higher R_θJA (357 °C/W).	Used in space-constrained PCBs where reflow assembly is required; not suitable for same thermal environment as TO-92 without layout adjustment.	Select MMBT4403 only when board area and automated assembly outweigh thermal derating needs.
2N3906	Lower I_C rating (200 mA), lower f_T (250 MHz typical but not guaranteed), and narrower h_FE range (30–300 only at I_C = 10 mA).	Preferred for low-power signal switching (<50 mA); unsuitable for 500 mA relay or LED driver loads.	Choose 2N3906 for cost-sensitive, low-current bias networks - avoid for high-current saturation applications.

Compared with MMBT4403 and 2N3906, the 2N4403_J60Z offers superior thermal capability and verified 500 mA switching performance in a through-hole package, making it the preferred choice for prototyping, industrial controls, and legacy-compatible designs requiring mechanical robustness and serviceability.

Availability

2N4403_J60Z is available at Aetrix Electronics and suitable for relay driver circuits, discrete audio preamplifiers, and level-shifting interfaces requiring stable component supply and long-term manufacturability.

Supply support for 2N4403_J60Z 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

Fairchild Semiconductor was a U.S.-based semiconductor company specializing in power management, analog, and discrete components before its acquisition by ON Semiconductor in 2016.

The 2N4403_J60Z belongs to Fairchild's legacy general-purpose bipolar transistor family, engineered for reliability in industrial control, consumer electronics, and educational hardware where proven performance and wide parametric margins matter more than ultra-miniaturization.

FAQ

What is the maximum continuous collector current for the 2N4403_J60Z?

The 2N4403_J60Z has an absolute maximum continuous collector current rating of 600 mA. However, its functional specification confirms reliable operation up to 500 mA in switching and amplification roles, with h_FE, V_CE(sat), and thermal limits validated at this level. Exceeding 500 mA requires careful thermal analysis due to derating curves and junction temperature constraints.

Is the 2N4403_J60Z pin-compatible with the MMBT4403?

No - the 2N4403_J60Z uses a TO-92 through-hole package with E-B-C lead order (left-to-right, flat side facing), while the MMBT4403 uses SOT-23 with different pinout (Emitter, Base, Collector mapped to pins 1–2–3). They share identical electrical characteristics but require separate PCB footprints and assembly processes. The 2N4403_J60Z cannot be substituted for MMBT4403 without layout revision.

What is the guaranteed h_FE range for the 2N4403_J60Z at 150 mA collector current?

At I_C = 150 mA and V_CE = 2.0 V, the 2N4403_J60Z guarantees h_FE ≥ 100. This value is confirmed in the "ON CHARACTERISTICS" table of the official datasheet and ensures sufficient current gain for robust saturation in medium-current switching applications like solenoid or fan control.

Can the 2N4403_J60Z be used in linear amplifier configurations?

Yes - the 2N4403_J60Z is explicitly characterized for linear operation, with small-signal parameters including h_fe = 60–500, h_ie = 1.5–15 kΩ, and f_T = 200 MHz provided at I_C = 20 mA. Its low noise and stable gain across temperature make it suitable for Class-A preamplifier stages, though thermal management is critical above 100 mW dissipation.

Does the 2N4403_J60Z meet RoHS requirements?

Yes - the 2N4403_J60Z was manufactured by Fairchild Semiconductor under RoHS-compliant processes prior to discontinuation. All documented revisions (including Rev. C cited in the datasheet) specify lead-free finish and halogen-free molding compound. Aetrix Electronics provides full material declarations and compliance documentation upon request for this part.

2N4403_J60Z Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-226-3, TO-92-3 (TO-226AA)

Packaging:: Bulk

Product Status:: Obsolete

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 600 mA

Voltage - Collector Emitter Breakdown (Max):: 40 V

Vce Saturation (Max) @ Ib, Ic:: 750mV @ 50mA, 500mA

Current - Collector Cutoff (Max):: -

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 150mA, 2V

Power - Max:: 625 mW

Frequency - Transition:: 200MHz

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92-3

2N4403_J60Z FAQ

1.How can I place an order for 2N4403_J60Z through Aetrix?

Please submit a Request for Quotation (RFQ) for 2N4403_J60Z 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 2N4403_J60Z reliable?

The price and inventory of 2N4403_J60Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2N4403_J60Z is usually 5 days.

3.What payment methods are accepted for 2N4403_J60Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2N4403_J60Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2N4403_J60Z?

2N4403_J60Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2N4403_J60Z 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 2N4403_J60Z?

For technical support, including 2N4403_J60Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2N4403_J60Z requirements.

6.How does Aetrix verify that 2N4403_J60Z is sourced from the original manufacturer or authorized distributors?

All 2N4403_J60Z 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 2N4403_J60Z meets industry standards.

7.What is the process for return or replacement of 2N4403_J60Z?

All 2N4403_J60Z units undergo pre-shipment inspection (PSI). If there is an issue with 2N4403_J60Z, 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 2N4403_J60Z part is unused and in its original packaging.

Return procedure for 2N4403_J60Z:

1.Submit a request within 90 days.

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

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