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

onsemi 2N4403ZL1

Name: 2N4403ZL1
Brand: onsemi
SKU: 2N4403ZL1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2N4403ZL1

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: 2N4403ZL1.pdf

Description:: TRANS PNP 40V 0.6A TO92

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2N4403ZL1 from ON Semiconductor is a PNP silicon bipolar junction transistor (BJT) designed for general-purpose amplification and switching in low-to-medium power circuits, with V_CEO = 40 V, I_C = 600 mA, f_T = 200 MHz, and TO-92 package. It operates across −55 °C to +150 °C and delivers h_FE ≥ 100 at I_C = 10 mA, supporting reliable signal inversion and load control in discrete logic interfaces.

For engineers reviewing the 2N4403ZL1 datasheet, pinout, applications, or equivalent options, key selection criteria include verified DC current gain at multiple bias points, saturation voltage under defined drive conditions, thermal resistance (R_JA = 200 °C/W), and Pb-free compliance status per ON Semiconductor's packaging specification.

Technical Context

The 2N4403ZL1 implements a planar epitaxial PNP structure optimized for fast switching and linear amplification. Its f_T = 200 MHz and C_cb ≤ 8.5 pF support operation up to VHF frequencies, while h_fe = 60–500 (at 1 mA) and h_ie = 1.5–15 kΩ define its small-signal input behavior in common-emitter configuration.

Switching performance is characterized by t_d ≤ 15 ns, t_r ≤ 20 ns, t_s ≤ 225 ns, and t_f ≤ 30 ns under V_CC = 30 V, I_C = 150 mA, and specified base drive. V_CE(sat) ≤ 0.4 V at I_C = 150 mA / I_B = 15 mA confirms low-loss on-state conduction suitable for active pull-up and level-shifting roles.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	40 V - Maximum collector-emitter voltage before breakdown; defines safe operating range in switching applications with inductive loads.
I_C	600 mA - Continuous collector current rating; supports medium-current driver stages without forced cooling.
f_T	200 MHz - Transition frequency; enables stable amplification or switching up to ~30 MHz with gain margin.
h_FE @ 10 mA	100–300 - DC current gain at moderate bias; ensures predictable base drive requirements in linear and saturated operation.
V_CE(sat)	≤ 0.4 V @ I_C = 150 mA / I_B = 15 mA - Low saturation voltage minimizes power loss and heating in switch-mode use.
R_JA	200 °C/W - Junction-to-ambient thermal resistance in free-air; informs derating needs for ambient temperatures above 25 °C.

Pinout & Package

2N4403ZL1 is housed in a TO-92 plastic package (Case 29, Style 1), with standard lead configuration: Emitter (Pin 1), Base (Pin 2), Collector (Pin 3), viewed from flat side with leads down and marking facing outward.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current exit terminal for PNP device	Connected to higher potential rail in common-base or common-collector configurations; sets reference for base bias network.
2 (Base)	Control electrode for minority-carrier injection	Receives forward-biased current to modulate collector current; requires series resistor to limit I_B and ensure saturation.
3 (Collector)	Current entry terminal for PNP device	Typically tied to ground or low-side return path; sinks load current when transistor is active.

Key Features

Feature	Design Value
Pb-free packaging option	Complies with RoHS Directive 2011/65/EU; marked as 2N4403ZL1 (Pb-free variant per ON Semi ordering nomenclature).
Wide temperature range	−55 °C to +150 °C operating junction range supports deployment in automotive under-hood and industrial control environments.
Low V_CE(sat)	0.4 V max at 150 mA enables <100 mW dissipation in saturated switch mode, reducing thermal stress in compact layouts.
High f_T	200 MHz transition frequency allows use in RF predriver stages and high-speed digital interface circuits up to 30 MHz.

Applications

Discrete Logic Level Shifter	Medium-Current Load Switch
Use Scenario: Translating TTL/CMOS logic levels to higher-voltage rails (e.g., 5 V → 12 V) in mixed-supply systems. IC Role / Device Role / Timing Role: PNP BJT configured as active-high level shifter with emitter follower or common-emitter inversion. Use Value: Delivers clean edge transitions with t_r/t_f ≤ 20/30 ns and minimal propagation delay due to low C_eb = 30 pF and h_fe > 100.	Use Scenario: Driving solenoids, relays, or LED arrays requiring up to 600 mA peak current from microcontroller GPIO. IC Role / Device Role / Timing Role: Saturated switch controlling current path between positive supply and load. Use Value: V_CE(sat) ≤ 0.4 V at I_C = 150 mA limits power loss to <60 mW, enabling direct PCB mounting without heatsink.
Audio Pre-amplifier Stage	Current Mirror Reference
Use Scenario: Low-noise voltage amplification in microphone preamp or sensor signal conditioning front-ends. IC Role / Device Role / Timing Role: Common-emitter amplifier biased in linear region with emitter degeneration. Use Value: h_fe = 60–500 and noise figure <10 dB (at R_S = 1 kΩ) support SNR-critical analog gain with minimal added distortion.	Use Scenario: Building matched current sources in analog ICs or discrete op-amp bias networks. IC Role / Device Role / Timing Role: One transistor of a two-device mirror pair, leveraging process-matched h_FE and V_BE tracking. Use Value: V_BE(sat) = 0.75–0.95 V and tight h_FE distribution (min/max ratio ≤ 10:1 at 10 mA) improve mirror accuracy and thermal stability.

Discrete Logic Level Shifter

Medium-Current Load Switch

Use Scenario: Translating TTL/CMOS logic levels to higher-voltage rails (e.g., 5 V → 12 V) in mixed-supply systems.

IC Role / Device Role / Timing Role: PNP BJT configured as active-high level shifter with emitter follower or common-emitter inversion.

Use Value: Delivers clean edge transitions with t_r/t_f ≤ 20/30 ns and minimal propagation delay due to low C_eb = 30 pF and h_fe > 100.

Use Scenario: Driving solenoids, relays, or LED arrays requiring up to 600 mA peak current from microcontroller GPIO.

IC Role / Device Role / Timing Role: Saturated switch controlling current path between positive supply and load.

Use Value: V_CE(sat) ≤ 0.4 V at I_C = 150 mA limits power loss to <60 mW, enabling direct PCB mounting without heatsink.

Audio Pre-amplifier Stage

Current Mirror Reference

Use Scenario: Low-noise voltage amplification in microphone preamp or sensor signal conditioning front-ends.

IC Role / Device Role / Timing Role: Common-emitter amplifier biased in linear region with emitter degeneration.

Use Value: h_fe = 60–500 and noise figure <10 dB (at R_S = 1 kΩ) support SNR-critical analog gain with minimal added distortion.

Use Scenario: Building matched current sources in analog ICs or discrete op-amp bias networks.

IC Role / Device Role / Timing Role: One transistor of a two-device mirror pair, leveraging process-matched h_FE and V_BE tracking.

Use Value: V_BE(sat) = 0.75–0.95 V and tight h_FE distribution (min/max ratio ≤ 10:1 at 10 mA) improve mirror accuracy and thermal stability.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP BJT switching and amplification applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
2N4401	NPN complement; identical package, ratings, and f_T, but opposite polarity and biasing requirements.	Requires inverted control logic and reversed supply connections; unsuitable for high-side switching without level translation.	Select only when NPN topology aligns with circuit architecture and base drive capability supports I_B = I_C/h_FE.
MPSA92	Higher V_CEO = 300 V, lower I_C = 500 mA, f_T = 50 MHz; TO-92 package with same pinout (E-B-C).	Better suited for high-voltage, low-frequency switching (e.g., flyback snubbers); less optimal for RF or fast digital edges.	Choose when primary requirement is voltage withstand > 100 V; avoid where bandwidth or low V_CE(sat) is critical.

Compared with 2N4403ZL1, the 2N4401 offers complementary NPN functionality but demands redesign of bias and layout, while the MPSA92 trades speed and saturation performance for higher voltage tolerance-making each viable only within distinct design constraints.

Availability

2N4403ZL1 is available at Aetrix Electronics and suitable for discrete logic interface design, medium-current switching, and analog signal conditioning requiring stable component supply, consistent Pb-free compliance, and TO-92 mechanical compatibility.

Supply support for 2N4403ZL1 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

ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power management, analog, and discrete devices for automotive, industrial, and consumer applications.

The 2N4403ZL1 belongs to ON Semiconductor's legacy general-purpose BJT product line, engineered for cost-sensitive, high-reliability discrete circuit functions including switching, amplification, and signal routing in non-automotive industrial and commercial equipment.

FAQ

What is the package type and lead configuration of the 2N4403ZL1?

The 2N4403ZL1 uses a TO-92 plastic package (Case 29, Style 1) with three leads arranged Emitter (Pin 1), Base (Pin 2), Collector (Pin 3) when viewed from the flat side with markings facing outward and leads pointing down. This configuration matches industry-standard PNP TO-92 orientation and enables drop-in replacement in existing footprints designed for 2N4403-series transistors.

Does the 2N4403ZL1 meet RoHS requirements?

Yes, the 2N4403ZL1 is a Pb-free device compliant with the EU RoHS Directive 2011/65/EU. The "ZL1" suffix in the part number explicitly denotes ON Semiconductor's Pb-free TO-92 variant, confirmed in the official ordering information table on page 78 of the 2N4403/D datasheet revision 1.

What is the maximum continuous collector current rating for the 2N4403ZL1?

The 2N4403ZL1 has a maximum continuous collector current (I_C) rating of 600 mA at T_A = 25 °C. Derating applies above 25 °C at 5.0 mW/°C for free-air operation, and the device supports up to 1.5 W total dissipation at T_C = 25 °C with appropriate heatsinking.

How does the 2N4403ZL1 perform in switching applications?

The 2N4403ZL1 delivers t_d ≤ 15 ns, t_r ≤ 20 ns, t_s ≤ 225 ns, and t_f ≤ 30 ns under V_CC = 30 V and I_C = 150 mA. Its low storage time reflects efficient minority-carrier removal, making it suitable for repetitive switching up to ~1 MHz with proper base drive and load management.

What are the key DC current gain specifications for the 2N4403ZL1?

The 2N4403ZL1 exhibits h_FE ≥ 30 at I_C = 0.1 mA, ≥ 60 at I_C = 1.0 mA, ≥ 100 at I_C = 10 mA, ≥ 100 at I_C = 150 mA, and ≥ 20 at I_C = 500 mA-all measured at V_CE = 1.0–2.0 V and T_A = 25 °C. This wide gain range supports both precision biasing and robust saturation across diverse operating points.

2N4403ZL1 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

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

Packaging:: Bulk

Product Status:: Active

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):: 100nA

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 (TO-226)

2N4403ZL1 FAQ

1.How can I place an order for 2N4403ZL1 through Aetrix?

Please submit a Request for Quotation (RFQ) for 2N4403ZL1 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 2N4403ZL1 reliable?

The price and inventory of 2N4403ZL1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2N4403ZL1 is usually 5 days.

3.What payment methods are accepted for 2N4403ZL1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2N4403ZL1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2N4403ZL1?

2N4403ZL1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2N4403ZL1 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 2N4403ZL1?

For technical support, including 2N4403ZL1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2N4403ZL1 requirements.

6.How does Aetrix verify that 2N4403ZL1 is sourced from the original manufacturer or authorized distributors?

All 2N4403ZL1 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 2N4403ZL1 meets industry standards.

7.What is the process for return or replacement of 2N4403ZL1?

All 2N4403ZL1 units undergo pre-shipment inspection (PSI). If there is an issue with 2N4403ZL1, 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 2N4403ZL1 part is unused and in its original packaging.

Return procedure for 2N4403ZL1:

1.Submit a request within 90 days.

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

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