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

onsemi FPN530

Name: FPN530
Brand: onsemi
SKU: FPN530
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: FPN530

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: FPN530.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

FPN530 from Fairchild Semiconductor is an NPN low-saturation transistor designed for high-current switching in power management circuits, featuring V_CEO = 30 V, I_C = 3.0 A continuous, V_CE(sat) = 300 mV at I_C = 1.0 A / I_B = 100 mA, h_FE = 530 at I_C = 100 mA, and TO-226 package. It serves as a main switch in DC-DC converters and motor drivers where low conduction loss and thermal efficiency are critical.

For engineers reviewing the FPN530 datasheet, pinout, applications, or equivalent options, key selection criteria include saturation voltage at 1–2 A load, DC current gain stability across temperature, thermal resistance (R_θJA = 125 °C/W), and compatibility with standard through-hole PCB layouts using TO-226 footprint.

Technical Context

This device uses Fairchild's Process NC to achieve low V_CE(sat) and high h_FE simultaneously - enabling efficient linear and saturated-mode operation up to 3.0 A. Its breakdown ratings (V_CBO = 60 V, V_EBO = 5.0 V) support robust gate/base drive margining in inductive load switching.

The FPN530 operates across –55°C to +150°C junction temperature, with R_θJC = 50 °C/W confirming suitability for heatsink-assisted mounting. Transition frequency f_T = 150 MHz indicates usable small-signal amplification capability, though primary design intent is power switching.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	30 V - Maximum safe collector-emitter voltage under open-base condition; defines upper rail limit in low-side switch applications.
I_C (continuous)	3.0 A - Continuous collector current rating; supports sustained 3 A loads without derating at T_A ≤ 25°C.
V_CE(sat)	300 mV @ I_C=1.0 A, I_B=100 mA - Low on-state voltage drop reduces conduction loss to ~300 mW at 1 A.
h_FE	530 @ I_C=100 mA, V_CE=2.0 V - High DC current gain enables low base drive current requirements.
R_θJA	125 °C/W - Junction-to-ambient thermal resistance; determines max ambient temperature before exceeding 150°C T_J at 1.0 W dissipation.
f_T	150 MHz - Transition frequency confirms usable bandwidth for fast-switching control loops or signal buffering.

Pinout & Package

FPN530 is housed in a TO-226 (TO-92) plastic package with standard three-terminal configuration: Collector (C), Base (B), Emitter (E), arranged left-to-right as C–B–E when viewing the flat side with leads downward.

Pin/Terminal	Circuit Role	Design Meaning
Collector (C)	High-current output node	Connected to load return path or switched rail; carries full load current and dissipates majority of heat.
Base (B)	Control input terminal	Receives current-limited drive signal; requires ≥100 mA for full saturation at 1 A collector current.
Emitter (E)	Reference/return node	Typically tied to ground or low-side shunt; establishes common reference for V_BE bias and current sensing.

Key Features

Feature	Design Value
Low V_CE(sat)	300 mV at 1 A ensures <0.3 W conduction loss, reducing thermal stress in compact power stages.
High h_FE	530 at 100 mA allows microcontroller GPIO direct drive without external buffer stage in low-speed switching.
Wide T_J range	–55°C to +150°C operation supports deployment in automotive engine compartments and industrial enclosures.
Process NC optimization	Manufactured on Fairchild's Process NC for balanced gain/saturation trade-off - not a general-purpose or RF-optimized variant.

Applications

DC-DC Converter Switch	Linear Regulator Pass Element
Use Scenario: Used as the main switching transistor in non-synchronous buck converters delivering up to 3 A output. IC Role / Device Role / Timing Role: NPN low-saturation switch controlling energy transfer from input to output inductor. Use Value: V_CE(sat) = 300 mV minimizes dropout and improves efficiency over alternatives with >500 mV saturation.	Use Scenario: Serves as series pass transistor in adjustable linear regulators powering FPGA core rails. IC Role / Device Role / Timing Role: Current-amplifying element modulating output voltage via base bias control. Use Value: h_FE = 530 enables precise regulation with low base drive error, improving load transient response.
Motor Driver Half-Bridge	Industrial Solenoid Driver
Use Scenario: Drives one leg of a brushed DC motor H-bridge in 24 V industrial actuators. IC Role / Device Role / Timing Role: Low-side switch sinking motor current during active PWM phase. Use Value: R_θJA = 125 °C/W and 3.0 A rating allow reliable 100% duty-cycle operation with minimal heatsinking.	Use Scenario: Controls 24 V solenoids in PLC I/O modules requiring fast turn-on and low hold current. IC Role / Device Role / Timing Role: High-gain saturated switch enabling microamp-level logic-level base drive. Use Value: V_BE(sat) = 1.25 V and h_FE = 530 reduce base resistor power and simplify driver IC selection.

DC-DC Converter Switch

Linear Regulator Pass Element

Use Scenario: Used as the main switching transistor in non-synchronous buck converters delivering up to 3 A output.

IC Role / Device Role / Timing Role: NPN low-saturation switch controlling energy transfer from input to output inductor.

Use Value: V_CE(sat) = 300 mV minimizes dropout and improves efficiency over alternatives with >500 mV saturation.

Use Scenario: Serves as series pass transistor in adjustable linear regulators powering FPGA core rails.

IC Role / Device Role / Timing Role: Current-amplifying element modulating output voltage via base bias control.

Use Value: h_FE = 530 enables precise regulation with low base drive error, improving load transient response.

Motor Driver Half-Bridge

Industrial Solenoid Driver

Use Scenario: Drives one leg of a brushed DC motor H-bridge in 24 V industrial actuators.

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

Use Value: R_θJA = 125 °C/W and 3.0 A rating allow reliable 100% duty-cycle operation with minimal heatsinking.

Use Scenario: Controls 24 V solenoids in PLC I/O modules requiring fast turn-on and low hold current.

IC Role / Device Role / Timing Role: High-gain saturated switch enabling microamp-level logic-level base drive.

Use Value: V_BE(sat) = 1.25 V and h_FE = 530 reduce base resistor power and simplify driver IC selection.

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_CEO = 100 V, V_CE(sat) = 1.2 V @ 3 A - higher saturation voltage, lower gain (h_FE = 20–70).	Better for higher-voltage flyback snubbing; unsuitable for low-loss 3 A switching below 30 V.	Select MJD31C only if V_CEO > 60 V is required and V_CE(sat) penalty is acceptable.
BCP53-16	TO-92 compatible, V_CEO = 45 V, V_CE(sat) = 500 mV @ 1 A - 67% higher saturation loss than FPN530.	Same footprint but inferior thermal performance (R_θJA = 200 °C/W); limited to <1.5 A continuous.	Choose BCP53-16 only for legacy board reuse where FPN530's 300 mV V_CE(sat) is not needed.

Compared with MJD31C and BCP53-16, the FPN530 delivers superior conduction efficiency at 1–2 A loads due to its 300 mV V_CE(sat) and 530 h_FE, while maintaining TO-226 compatibility - making it optimal for space-constrained, thermally sensitive 24–30 V power stages.

Availability

FPN530 is available at Aetrix Electronics and suitable for DC-DC converters, motor drivers, linear regulator pass elements, and industrial solenoid control requiring stable component supply and long-term manufacturability.

Supply support for FPN530 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 analog and power semiconductor manufacturer, acquired by ON Semiconductor in 2016; its legacy products remain widely deployed in industrial and automotive systems.

The FPN530 belongs to Fairchild's NPN low-saturation transistor family, engineered specifically for high-efficiency, medium-current switching in cost-sensitive power conversion and actuator control applications.

FAQ

What is the maximum continuous collector current rating for the FPN530?

The FPN530 has a maximum continuous collector current rating of 3.0 A at T_A = 25°C. Derating is required above 25°C ambient per the Power Dissipation vs Ambient Temperature curve; at 75°C, max I_C drops to approximately 2.0 A to maintain T_J ≤ 150°C. This rating applies only under steady-state conditions - pulsed operation requires consultation with Fairchild's application engineering team.

Is the FPN530 pin-compatible with the FPN530A variant?

Yes, the FPN530 and FPN530A share identical TO-226 package, pinout (C–B–E), and absolute maximum ratings. The difference lies in h_FE and V_CE(sat) test conditions: FPN530 specifies h_FE ≥ 530 at I_C = 100 mA, while FPN530A guarantees h_FE ≥ 530A (i.e., ≥ 530) at I_C = 1.0 A and offers tighter V_CE(sat) limits at higher currents. Both are electrically interchangeable in most designs.

What is the typical V_CE(sat) of the FPN530 at 2.0 A collector current?

The FPN530 exhibits V_CE(sat) = 450 mV at I_C = 2.0 A and I_B = 200 mA, per the Electrical Characteristics table. This value reflects actual on-state voltage under specified drive conditions and is critical for calculating conduction losses in high-current switching nodes. At lower base drive (e.g., I_B = 100 mA), V_CE(sat) rises significantly and is not guaranteed.

Does the FPN530 meet RoHS compliance and what is its lead finish?

The FPN530 is RoHS-compliant and features a matte tin (Sn) lead finish, consistent with Fairchild's standard for Pb-free TO-226 devices manufactured post-2006. The "RoHS" marking appears on tape-and-reel packaging labels, and JEDEC-compliant moisture sensitivity level (MSL) is Level 1 - unlimited floor life at ≤30°C/60% RH. Full compliance documentation is available upon request.

Can the FPN530 be used in linear amplifier configurations?

The FPN530 can operate in linear mode, supported by its f_T = 150 MHz and h_FE stability across collector current, but it is not optimized for low-distortion analog amplification. Its primary design focus is saturated switching; linearity, noise, and SOA limitations make it less suitable than dedicated audio or RF transistors. For linear applications, verify safe operating area (SOA) boundaries in the datasheet's "Safe Operating Area" graph before implementation.

FPN530 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:: 300mV @ 100mA, 1A

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 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

FPN530 FAQ

1.How can I place an order for FPN530 through Aetrix?

Please submit a Request for Quotation (RFQ) for FPN530 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 FPN530 reliable?

The price and inventory of FPN530 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FPN530 is usually 5 days.

3.What payment methods are accepted for FPN530?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FPN530 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for FPN530?

FPN530 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your FPN530 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 FPN530?

For technical support, including FPN530 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FPN530 requirements.

6.How does Aetrix verify that FPN530 is sourced from the original manufacturer or authorized distributors?

All FPN530 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 FPN530 meets industry standards.

7.What is the process for return or replacement of FPN530?

All FPN530 units undergo pre-shipment inspection (PSI). If there is an issue with FPN530, 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 FPN530 part is unused and in its original packaging.

Return procedure for FPN530:

1.Submit a request within 90 days.

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

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