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

onsemi 2N4403RLRPG

Name: 2N4403RLRPG
Brand: onsemi
SKU: 2N4403RLRPG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2N4403RLRPG

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-226-3, TO-92-3 Long Body, Formed Leads

Datasheet:: 2N4403RLRPG.pdf

Description:: TRANS PNP 40V 0.6A TO92

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2N4403RLRPG from onsemi is a PNP silicon general-purpose transistor in TO-92 package, rated for V_CEO = 40 V, I_C = 600 mA, and P_D = 625 mW at T_A = 25°C. It delivers h_FE = 30–300 (at I_C = 0.1–150 mA), f_T = 200 MHz, and V_CE(sat) ≤ 0.75 V (I_C = 500 mA, I_B = 50 mA), commonly used in low-power switching and linear amplification circuits.

For engineers reviewing the 2N4403RLRPG datasheet, pinout, applications, or equivalent options, key selection criteria include its Pb-free TO-92 ammo-pack packaging, verified DC current gain across multiple operating points, saturation voltage performance under high-current drive, thermal resistance (R_JA = 200°C/W), and documented switching times (t_s ≤ 225 ns).

Technical Context

This PNP bipolar junction transistor operates with emitter-base forward bias and collector-base reverse bias in active or saturation mode. Its h-parameter set (h_fe, h_ie, h_re, h_oe) is characterized at V_CE = −10 V, f = 1 kHz, and T_A = 25°C, supporting small-signal modeling and amplifier design.

Switching behavior is defined by delay (t_d ≤ 15 ns), rise (t_r ≤ 20 ns), storage (t_s ≤ 225 ns), and fall (t_f ≤ 30 ns) times under V_CC = 30 V, I_C = 150 mA, and I_B1/I_B2 = 15 mA conditions - enabling reliable use in digital logic interfaces and pulse-width modulation drivers.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	40 V - Maximum allowable collector-emitter voltage before breakdown; defines safe operating range in switching applications.
I_C (max)	600 mA - Continuous collector current limit; sets upper bound for load-driving capability in saturated switch designs.
h_FE (min–max)	30–300 - DC current gain spread across I_C = 0.1–500 mA; determines base drive requirements for predictable saturation.
f_T	200 MHz - Transition frequency at I_C = 20 mA, V_CE = 10 V; indicates usable bandwidth for RF or high-speed analog amplification.
V_CE(sat)	≤0.75 V @ I_C = 500 mA, I_B = 50 mA - Low saturation voltage minimizes power loss and heating in on-state switching.
R_JA	200°C/W - Junction-to-ambient thermal resistance; informs heatsinking needs when dissipating >100 mW continuously.
t_s	≤225 ns - Storage time under specified test conditions; critical for maximum switching frequency in inductive load drivers.

Pinout & Package

2N4403RLRPG uses the TO-92 (Case 29-11) through-hole plastic package with straight leads in ammo-pack format. The device is Pb-free and complies with RoHS Directive 2011/65/EU.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Emitter terminal of PNP transistor	Current source node in common-emitter configuration; connects to higher potential rail in switching applications.
2 (Base)	Control electrode for minority-carrier injection	Accepts negative-going input signal to turn on device; requires current-limited drive to avoid over-dissipation.
3 (Collector)	Output terminal collecting majority carriers	Sinks load current to ground or lower-potential node; must remain at lower voltage than emitter during conduction.

Key Features

Feature	Design Value
Pb-free TO-92 packaging	Enables RoHS-compliant assembly without lead-tin reflow concerns; compatible with standard wave-solder processes.
Guaranteed h_FE range	30–300 across five I_C test points ensures consistent base drive sizing for production-scale circuit design.
Low V_CE(sat)	≤0.4 V @ I_C = 150 mA enables <100 mW dissipation in typical relay or LED driver applications.
200 MHz f_T	Supports stable small-signal amplification up to ~20 MHz with adequate gain margin, suitable for audio and IF stages.
−55°C to +150°C T_J	Wide junction temperature range allows operation in industrial environments without derating below −40°C ambient.

Applications

Relay Driver Circuit	LED Current Switch
Use Scenario: Driving 12 V, 50 mA electromagnetic relay coil from microcontroller GPIO. IC Role / Device Role / Timing Role: PNP switch controlling coil current path to ground; operates in saturation with fast turn-off to prevent contact bounce. Use Value: Verified t_s ≤ 225 ns and V_CE(sat) ≤ 0.4 V ensure clean de-energization and <50 mW dissipation at full load.	Use Scenario: Constant-current sink for high-brightness white LED string in automotive interior lighting. IC Role / Device Role / Timing Role: Linear current regulator using emitter resistor feedback; biased in active region for stable I_LED. Use Value: h_FE ≥ 100 at I_C = 10–20 mA enables precise current setting with minimal base current error.
Level-Shifting Interface	Discrete Logic Inverter
Use Scenario: Converting 3.3 V CMOS logic output to 5 V open-collector signal for legacy sensor interface. IC Role / Device Role / Timing Role: Active-low level shifter with pull-up to 5 V; configured as common-emitter inverter with defined propagation delay. Use Value: t_r ≤ 20 ns and t_f ≤ 30 ns support >10 MHz data rates while maintaining noise immunity.	Use Scenario: Building discrete NOT gate in educational lab or repair context where IC replacement is unavailable. IC Role / Device Role / Timing Role: Single-transistor inverter with base resistor network; provides logic inversion with fan-out ≥3 TTL loads. Use Value: Guaranteed h_FE ≥ 60 at I_C = 1 mA ensures reliable switching margin across temperature and unit variation.

Relay Driver Circuit

LED Current Switch

Use Scenario: Driving 12 V, 50 mA electromagnetic relay coil from microcontroller GPIO.

IC Role / Device Role / Timing Role: PNP switch controlling coil current path to ground; operates in saturation with fast turn-off to prevent contact bounce.

Use Value: Verified t_s ≤ 225 ns and V_CE(sat) ≤ 0.4 V ensure clean de-energization and <50 mW dissipation at full load.

Use Scenario: Constant-current sink for high-brightness white LED string in automotive interior lighting.

IC Role / Device Role / Timing Role: Linear current regulator using emitter resistor feedback; biased in active region for stable I_LED.

Use Value: h_FE ≥ 100 at I_C = 10–20 mA enables precise current setting with minimal base current error.

Level-Shifting Interface

Discrete Logic Inverter

Use Scenario: Converting 3.3 V CMOS logic output to 5 V open-collector signal for legacy sensor interface.

IC Role / Device Role / Timing Role: Active-low level shifter with pull-up to 5 V; configured as common-emitter inverter with defined propagation delay.

Use Value: t_r ≤ 20 ns and t_f ≤ 30 ns support >10 MHz data rates while maintaining noise immunity.

Use Scenario: Building discrete NOT gate in educational lab or repair context where IC replacement is unavailable.

IC Role / Device Role / Timing Role: Single-transistor inverter with base resistor network; provides logic inversion with fan-out ≥3 TTL loads.

Use Value: Guaranteed h_FE ≥ 60 at I_C = 1 mA ensures reliable switching margin across temperature and unit variation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MPSA92	V_CEO = 300 V, I_C = 500 mA, h_FE = 25–300; higher voltage rating but lower f_T (50 MHz)	Better suited for high-voltage AC line sensing or flyback snubber circuits; less optimal for >10 MHz switching	Select when V_CEO > 40 V is required; verify base drive compatibility due to higher C_eb (40 pF vs. 30 pF)
BC557	V_CEO = 45 V, I_C = 100 mA, h_FE = 110–800; lower current rating but tighter h_FE binning	Preferred for low-noise preamp stages or precision bias networks; insufficient for >200 mA loads	Choose for signal conditioning where gain consistency matters more than power handling; not drop-in for 500 mA switching

Compared with MPSA92 and BC557, the 2N4403RLRPG offers balanced performance across voltage (40 V), current (600 mA), speed (200 MHz f_T), and thermal capability (625 mW), making it optimal for mid-power discrete switching where cost, availability, and proven reliability are prioritized.

Availability

2N4403RLRPG is available at Aetrix Electronics and suitable for relay drivers, LED current switches, level-shifting interfaces, and discrete logic inverters requiring stable component supply and RoHS-compliant packaging.

Supply support for 2N4403RLRPG 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 manufacturer specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, medical, and IoT applications.

The 2N4403RLRPG belongs to onsemi's legacy general-purpose bipolar transistor product line, designed for cost-sensitive, high-volume discrete switching and amplification tasks where robustness, wide temperature operation, and long-term supply stability are essential.

FAQ

What is the maximum continuous collector current rating for the 2N4403RLRPG?

The 2N4403RLRPG has a maximum continuous collector current (I_C) rating of 600 mA at T_A = 25°C. This value decreases with rising ambient temperature due to its 5.0 mW/°C derating factor above 25°C. At 75°C ambient, the usable I_C drops to approximately 350 mA. Always verify thermal design margins using R_JA = 200°C/W when operating near this limit in the 2N4403RLRPG.

Does the 2N4403RLRPG have a documented transition frequency (f_T) specification?

Yes, the 2N4403RLRPG has a guaranteed minimum transition frequency (f_T) of 200 MHz, measured at I_C = 20 mA, V_CE = 10 V, and f = 100 MHz. This parameter confirms its suitability for RF amplification up to ~20 MHz and high-speed switching applications where gain-bandwidth trade-offs must be considered in the 2N4403RLRPG design.

What is the pin configuration for the 2N4403RLRPG in its TO-92 package?

The 2N4403RLRPG uses the standard TO-92 pinout: Pin 1 is Emitter, Pin 2 is Base, and Pin 3 is Collector - confirmed in the onsemi datasheet Figure "MARKING DIAGRAM" and "PACKAGE DIMENSIONS" section. This configuration applies to all TO-92 variants including the 2N4403RLRPG ammo-pack variant and must be observed to avoid reverse-bias damage during PCB layout.

Is the 2N4403RLRPG RoHS-compliant and what does the 'G' suffix indicate?

Yes, the 2N4403RLRPG is RoHS-compliant and Pb-free, as indicated by the 'G' suffix in its part number. The 'G' denotes compliance with Directive 2011/65/EU, and the device meets JEDEC J-STD-609A Class 3 moisture sensitivity level. This makes the 2N4403RLRPG suitable for lead-free reflow assembly without special baking requirements prior to soldering.

How does the 2N4403RLRPG compare to the 2N4401 in terms of polarity and complementary use?

The 2N4403RLRPG is the PNP complement to the NPN 2N4401, sharing identical TO-92 packaging, voltage ratings (V_CEO = 40 V), and thermal characteristics (R_JA = 200°C/W). Their matched h_FE ranges and switching speeds enable direct pairing in push-pull amplifier stages or H-bridge drivers - though the 2N4403RLRPG must be biased with inverted control signals relative to the 2N4401.

2N4403RLRPG Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-226-3, TO-92-3 Long Body, Formed Leads

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 (TO-226)

2N4403RLRPG FAQ

1.How can I place an order for 2N4403RLRPG through Aetrix?

Please submit a Request for Quotation (RFQ) for 2N4403RLRPG 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 2N4403RLRPG reliable?

The price and inventory of 2N4403RLRPG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2N4403RLRPG is usually 5 days.

3.What payment methods are accepted for 2N4403RLRPG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2N4403RLRPG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2N4403RLRPG?

2N4403RLRPG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2N4403RLRPG 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 2N4403RLRPG?

For technical support, including 2N4403RLRPG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2N4403RLRPG requirements.

6.How does Aetrix verify that 2N4403RLRPG is sourced from the original manufacturer or authorized distributors?

All 2N4403RLRPG 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 2N4403RLRPG meets industry standards.

7.What is the process for return or replacement of 2N4403RLRPG?

All 2N4403RLRPG units undergo pre-shipment inspection (PSI). If there is an issue with 2N4403RLRPG, 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 2N4403RLRPG part is unused and in its original packaging.

Return procedure for 2N4403RLRPG:

1.Submit a request within 90 days.

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

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