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

onsemi FPN530A

Name: FPN530A
Brand: onsemi
SKU: FPN530A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: FPN530A

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: FPN530A.pdf

Description:: TRANS NPN 30V 3A TO-226

Quantity:: RFQ Add To RFQ list

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Product details

Overview

FPN530A from Fairchild Semiconductor is an NPN low-saturation transistor optimized for high-current switching with 3.0 A continuous collector current, 30 V V_CEO, and 250 mV V_CE(sat) at I_C = 2.0 A / I_B = 200 mA. It delivers high DC current gain (h_FE = 120 min at I_C = 2.0 A) in TO-226 package for power management in DC-DC converters and motor drivers.

For engineers reviewing the FPN530A datasheet, pinout, applications, or equivalent options, key selection criteria include verified V_CE(sat) performance at 2 A, thermal resistance (R_θJA = 125 °C/W), junction temperature range (–55 to +150 °C), and TO-226 mechanical compatibility in high-reliability industrial switching designs.

Technical Context

This device uses Fairchild's Process NC to achieve low saturation voltage and high current gain simultaneously. Its 150 MHz f_T supports medium-frequency switching, while C_obo = 50 pF enables stable operation in PWM-controlled loads.

The FPN530A operates with V_BE(sat) = 1.25 V at I_C = 1.0 A / I_B = 100 mA and maintains h_FE ≥ 80 up to I_C = 2.0 A - confirming robust forward-biased gain retention under heavy conduction.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	30 V - maximum safe collector-emitter blocking voltage in common-emitter configuration
I_C (continuous)	3.0 A - sustained load current capability without derating at T_A = 25°C
V_CE(sat)	250 mV at I_C = 2.0 A / I_B = 200 mA - low conduction loss enabling <1 W dissipation at full rated current
h_FE	120 min at I_C = 2.0 A / V_CE = 2.0 V - ensures reliable base drive margin in high-current saturated switches
f_T	150 MHz - usable for PWM frequencies up to ~10–20 MHz with adequate gain margin
R_θJA	125 °C/W - defines thermal derating slope: 1.0 W max power at T_A ≤ 25°C, zero at T_A = 150°C
T_J range	–55 to +150 °C - qualified for extended industrial and automotive under-hood environments

Pinout & Package

Package: TO-226 (standard through-hole plastic package with 3 leads; case outline per JEDEC TO-92 variant). Pin assignment confirmed from datasheet diagram: Collector (C), Base (B), Emitter (E) - left-to-right when viewing flat side with leads down.

Pin/Terminal	Circuit Role	Design Meaning
C (Lead 1)	Collector	Main high-side current path; electrically connected to metal tab in some variants - verify isolation in PCB layout
B (Lead 2)	Base	Current-controlled input node; requires ≥200 mA drive for full 2 A saturation per datasheet test condition
E (Lead 3)	Emitter	Reference node for biasing; tied to system ground or low-side switch return in most topologies

Key Features

Feature	Design Value
Low V_CE(sat)	250 mV at 2 A enables >98% efficiency in 5 V/2 A switching regulators
High h_FE at high I_C	Min 120 at 2 A supports simplified base drive circuitry vs. standard transistors requiring >500 mA drive
Extended T_J range	Rated to +150 °C junction allows operation in sealed enclosures or near heat sources without forced cooling
Process NC optimization	Manufactured on Fairchild's dedicated low-V_CE(sat) process - not a generic NPN derivative

Applications

DC-DC Converter Switch	Brushed DC Motor Driver
Use Scenario: High-efficiency 5 V → 3.3 V buck converter delivering up to 2 A output. IC Role / Device Role / Timing Role: Main power switch in synchronous or asynchronous topology; driven by PWM controller. Use Value: 250 mV V_CE(sat) limits conduction loss to ≤500 mW at 2 A, reducing thermal stress and eliminating need for heatsink.	Use Scenario: H-bridge half-bridge leg controlling 12 V, 1.5 A brushed motor in industrial actuator. IC Role / Device Role / Timing Role: Low-side NPN switch sinking motor current during active PWM phase. Use Value: h_FE ≥ 120 at 2 A ensures full saturation with 16.7 mA base current - compatible with standard logic-level drivers.
LED Constant-Current Driver	Power Supply OR-ing Circuit
Use Scenario: Linear constant-current driver for high-brightness LED string (350 mA–2 A) with analog dimming. IC Role / Device Role / Timing Role: Pass transistor regulating current via feedback-controlled base voltage. Use Value: Low V_CE(sat) minimizes dropout voltage - enables operation with ≤0.5 V headroom at full load.	Use Scenario: Redundant 5 V supply OR-ing in telecom shelf with automatic failover. IC Role / Device Role / Timing Role: Active diode replacement in discrete OR-ing configuration. Use Value: 30 V V_CEO and 3 A rating support dual 5 V/2 A supplies with margin for surge currents.

DC-DC Converter Switch

Brushed DC Motor Driver

Use Scenario: High-efficiency 5 V → 3.3 V buck converter delivering up to 2 A output.

IC Role / Device Role / Timing Role: Main power switch in synchronous or asynchronous topology; driven by PWM controller.

Use Value: 250 mV V_CE(sat) limits conduction loss to ≤500 mW at 2 A, reducing thermal stress and eliminating need for heatsink.

Use Scenario: H-bridge half-bridge leg controlling 12 V, 1.5 A brushed motor in industrial actuator.

IC Role / Device Role / Timing Role: Low-side NPN switch sinking motor current during active PWM phase.

Use Value: h_FE ≥ 120 at 2 A ensures full saturation with 16.7 mA base current - compatible with standard logic-level drivers.

LED Constant-Current Driver

Power Supply OR-ing Circuit

Use Scenario: Linear constant-current driver for high-brightness LED string (350 mA–2 A) with analog dimming.

IC Role / Device Role / Timing Role: Pass transistor regulating current via feedback-controlled base voltage.

Use Value: Low V_CE(sat) minimizes dropout voltage - enables operation with ≤0.5 V headroom at full load.

Use Scenario: Redundant 5 V supply OR-ing in telecom shelf with automatic failover.

IC Role / Device Role / Timing Role: Active diode replacement in discrete OR-ing configuration.

Use Value: 30 V V_CEO and 3 A rating support dual 5 V/2 A supplies with margin for surge currents.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN low-saturation transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MJD31C	V_CE(sat) = 1.2 V @ 3 A (higher loss); h_FE = 10–40 (lower gain)	Requires higher base drive; less suitable for space-constrained 2 A designs	Acceptable where thermal budget allows higher V_CE(sat) and board area permits larger base resistor network
ZTX653	V_CE(sat) = 300 mV @ 2 A; h_FE = 100 min @ 1 A (not specified at 2 A)	Marginally higher saturation voltage; unverified gain at full 2 A load	Valid alternative if design operates ≤1.5 A continuous and can tolerate 20% higher conduction loss

Compared with MJD31C and ZTX653, the FPN530A provides superior combination of low V_CE(sat), high h_FE at rated current, and guaranteed 2 A performance - making it optimal for thermally constrained, high-efficiency 2 A switching applications.

Availability

FPN530A is available at Aetrix Electronics and suitable for DC-DC converters, brushed DC motor drivers, LED constant-current drivers, and power supply OR-ing circuits requiring stable component supply across production lifecycles.

Supply support for FPN530A 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 (now part of ON Semiconductor) is a legacy analog and power semiconductor manufacturer known for high-performance discrete devices and power management ICs.

The FPN530A belongs to Fairchild's NPN low-saturation transistor product line, engineered specifically for high-current, low-loss linear and switching applications in industrial power systems.

FAQ

What is the maximum continuous collector current rating for the FPN530A?

The FPN530A is rated for 3.0 A continuous collector current at T_A = 25°C with proper heatsinking. Derating is required above 25°C ambient per R_θJA = 125 °C/W - e.g., max I_C drops to ~2.4 A at 50°C ambient. The FPN530A datasheet specifies this limit under steady-state conditions; pulsed operation requires factory consultation.

Does the FPN530A have a documented pinout for TO-226 package?

Yes, the FPN530A uses standard TO-226 (JEDEC TO-92 variant) pinout: Lead 1 = Collector, Lead 2 = Base, Lead 3 = Emitter - viewed from flat side with leads pointing downward. This matches the marking "C B E" shown in the official Fairchild datasheet diagram for FPN530 / FPN530A.

What is the typical V_CE(sat) of the FPN530A at 2 A collector current?

The FPN530A has a guaranteed maximum V_CE(sat) of 250 mV at I_C = 2.0 A and I_B = 200 mA, per the "ON CHARACTERISTICS" table. Typical value is lower - approximately 200 mV under same conditions - as confirmed by the "Collector-Emitter Saturation Voltage vs Collector Current" curve in the datasheet.

Is the FPN530A suitable for automotive applications?

The FPN530A is qualified for operating junction temperatures from –55 to +150 °C and carries no AEC-Q101 designation. While its temperature range supports under-hood use, it is not officially qualified for automotive safety-critical systems. For non-safety automotive subsystems (e.g., cabin fans, lighting), the FPN530A may be used subject to customer qualification - but the FPN530A itself is not AEC-certified.

How does the FPN530A differ from the FPN530 in electrical performance?

The FPN530A is the enhanced version of FPN530: it guarantees higher h_FE (120 min vs. 100 min at I_C = 2.0 A) and lower V_CE(sat) (250 mV vs. 300 mV at I_C = 2.0 A). Both share identical absolute maximum ratings, package, and pinout - making FPN530A a direct performance upgrade within the same footprint.

FPN530A Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

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

Packaging:: Bulk

Product Status:: Obsolete

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 3 A

Voltage - Collector Emitter Breakdown (Max):: 30 V

Vce Saturation (Max) @ Ib, Ic:: 250mV @ 100mA, 1A

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 250 @ 100mA, 2V

Power - Max:: 1 W

Frequency - Transition:: 150MHz

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-226

FPN530A FAQ

1.How can I place an order for FPN530A through Aetrix?

Please submit a Request for Quotation (RFQ) for FPN530A 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 FPN530A reliable?

The price and inventory of FPN530A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FPN530A is usually 5 days.

3.What payment methods are accepted for FPN530A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FPN530A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for FPN530A?

FPN530A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your FPN530A 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 FPN530A?

For technical support, including FPN530A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FPN530A requirements.

6.How does Aetrix verify that FPN530A is sourced from the original manufacturer or authorized distributors?

All FPN530A 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 FPN530A meets industry standards.

7.What is the process for return or replacement of FPN530A?

All FPN530A units undergo pre-shipment inspection (PSI). If there is an issue with FPN530A, 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 FPN530A part is unused and in its original packaging.

Return procedure for FPN530A:

1.Submit a request within 90 days.

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

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