Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Infineon Technologies SPP12N50C3XKSA1

Name: SPP12N50C3XKSA1
Brand: Infineon Technologies
SKU: SPP12N50C3XKSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SPP12N50C3XKSA1

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-220-3

Datasheet:: SPP12N50C3XKSA1.pdf

Description:: LOW POWER_LEGACY

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,918

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

SPP12N50C3 from Infineon Technologies is a 500 V, 11.6 A N-channel CoolMOS™ C3 superjunction power MOSFET in PG-TO220-3-31 package, featuring R_DS(on) = 0.38 Ω at T_j = 25°C and ultra-low gate charge (Q_g = 49 nC), designed for high-efficiency SMPS primary-side switching in industrial AC/DC adapters and server power supplies.

For engineers reviewing the SPP12N50C3 datasheet, SPP12N50C3 pinout, SPP12N50C3 application, or SPP12N50C3 equivalent, key selection criteria include its 500 V V_(BR)DSS, periodic avalanche rating (E_AS = 340 mJ), extreme dv/dt capability (50 V/ns), isolated package (2500 VAC, 1 min), and thermal resistance R_thJC = 1 K/W.

Technical Context

This device implements Infineon's third-generation CoolMOS™ technology with optimized charge balancing for reduced conduction and switching losses. Its low effective output capacitance (C_o(er) = 45 pF) and fast switching (t_d(off) = 45 ns, t_f = 8 ns) enable operation in high-frequency resonant topologies like LLC converters.

The MOSFET integrates a robust body diode with reverse recovery charge Q_rr = 5.5 µC and trr = 380 ns, supporting hard-switched PFC and ZVS transitions. Its fully isolated TO-220 package eliminates need for insulating washers in heatsink-mounted designs.

Key Specifications

Parameter	Value and Actual Design Meaning
V_(BR)DSS	500 V - Withstands 400 V DC link with 25% margin; supports universal-input 85–265 VAC SMPS
R_DS(on)	0.38 Ω @ T_j = 25°C - Enables <1.5 W conduction loss at 7 A continuous drain current
Q_g	49 nC - Reduces gate drive power and enables use of lower-cost drivers in 100–300 kHz designs
E_AS	340 mJ - Supports single-pulse avalanche survival during startup or overload without snubber
dv/dt	50 V/ns - Immune to false turn-on in high-noise bridge-leg configurations
R_thJC	1 K/W - Allows 125 W dissipation at 100°C case temperature; simplifies thermal design
C_iss	1200 pF - Low input capacitance improves Miller immunity and reduces gate oscillation risk

Pinout & Package

PG-TO220-3-31 package: insulated tab (2500 VAC, 1 min), vertical mounting, lead-free, RoHS-compliant. Pin 1 = Gate, Pin 2 = Drain (tab), Pin 3 = Source.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	Gate	High-impedance control terminal; requires ≤10 V drive for full enhancement; connects to PWM controller output via series resistor
Pin 2	Drain (Tab)	Main high-voltage power terminal; electrically isolated from heatsink; carries full switched current and DC link voltage
Pin 3	Source	Reference node for gate drive and current sensing; ties to primary ground plane; returns switch current to bulk capacitor

Key Features

Feature	Design Value
Ultra-low gate charge	Q_g = 49 nC - Enables efficient 200–300 kHz operation with minimal driver loss
Periodic avalanche rated	E_AR = 0.6 mJ - Supports repetitive energy clamping in flyback snubbers without derating
Extreme dv/dt immunity	50 V/ns - Eliminates need for negative gate turn-off or active Miller clamp in half-bridge layouts
Fully isolated package	2500 VAC isolation - Removes insulating pad requirement; reduces thermal interface resistance by ~0.3 K/W
Low effective output capacitance	C_o(er) = 45 pF - Minimizes turn-off loss and improves ZVS initiation in resonant converters

Applications

Server PSU Primary Switch

Industrial AC/DC Adapter

Use Scenario: High-density 1 kW+ server power supply operating at 200–300 kHz with LLC resonant topology.

IC Role / Device Role / Timing Role: Primary-side high-side switch handling 400 V DC link; synchronized with secondary-side rectifiers via timing control.

Use Value: Low R_DS(on) and C_o(er) reduce conduction and turn-off losses, enabling >96% efficiency at full load.

Use Scenario: 300–500 W industrial AC/DC adapter with active PFC + LLC stage for factory automation equipment.

IC Role / Device Role / Timing Role: PFC boost switch and LLC primary switch; operates under wide ambient (−40°C to +70°C) and high reliability requirements.

Use Value: Periodic avalanche rating ensures robustness during line surges; isolated package simplifies mechanical assembly and safety certification.

Telecom Rectifier Module

Medical Power Supply Input Stage

Use Scenario: -48 V telecom rectifier with universal input (85–265 VAC) and hold-up time >20 ms.

IC Role / Device Role / Timing Role: Main switching element in two-switch forward or asymmetrical half-bridge configuration.

Use Value: 500 V rating provides margin over 400 V DC bus; low Q_g allows direct drive from UC384x controllers without buffer stages.

Use Scenario: Class I/II medical-grade 250 W AC/DC power supply requiring reinforced insulation and low leakage.

IC Role / Device Role / Timing Role: Isolated primary switch where creepage/clearance and transformerless heatsinking are critical.

Use Value: Fully isolated TO-220 package meets IEC 60601-1 creepage requirements without additional barriers; R_thJC = 1 K/W enables compact heatsink design.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage power MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP12NK50ZFP	R_DS(on) = 0.42 Ω, Q_g = 52 nC, non-isolated TO-220FP	Requires insulating pad; higher conduction loss at 7 A	Lower cost but adds thermal interface resistance and assembly step
IPP60R099C7	600 V, R_DS(on) = 0.099 Ω, Q_g = 62 nC, TO-220	Higher voltage margin but larger die size increases switching loss at 200 kHz	Better for 400 V systems needing extra margin; less optimal for 380 V DC link efficiency focus

Compared with STP12NK50ZFP and IPP60R099C7, SPP12N50C3 delivers superior thermal performance due to its isolated package and lowest R_DS(on)/Q_g ratio among 500 V devices, making it optimal for space-constrained, high-efficiency SMPS where thermal management and EMI control are critical.

Availability

SPP12N50C3 is available at Aetrix Electronics and suitable for industrial AC/DC adapters, telecom rectifier modules, and medical power supply input stages requiring stable component supply and long-term lifecycle support.

Supply support for SPP12N50C3 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs and discrete devices, with global manufacturing and quality certifications including ISO/TS 16949 and IATF 16949.

SPP12N50C3 belongs to the CoolMOS™ C3 product line, engineered specifically for high-efficiency, high-power-density switch-mode power supplies operating above 100 kHz, targeting server, telecom, and industrial power applications.

FAQ

What is the maximum continuous drain current at 100°C case temperature?

The SPP12N50C3 supports 7 A continuous drain current at T_C = 100°C, as specified in the Absolute Maximum Ratings table. This value accounts for R_DS(on) increase with junction temperature and thermal limits of the TO-220 package. Derating curves on page 5 confirm linear reduction from 11.6 A at 25°C to 7 A at 100°C.

Does the body diode support synchronous rectification in LLC converters?

No - the integrated body diode has trr = 380 ns and Q_rr = 5.5 µC, which is too slow for synchronous rectification. It is intended for freewheeling and clamping only. For synchronous operation, external Schottky or GaN FETs must be used on the secondary side.

Can SPP12N50C3 replace SPI12N50C3 in existing PCB layouts?

Yes - both share identical PG-TO220-3-31 packaging, pinout, and thermal/mechanical footprint. Electrical parameters are identical per datasheet Rev. 3.1. No layout changes are required; only ordering code and marking differ (SPP vs SPI).

What is the safe operating area (SOA) limitation at 100 µs pulse width?

At t_p = 100 µs and T_C = 25°C, the SOA curve (page 5, chart 3) limits V_DS to ~180 V at 11.6 A. This reflects thermal constraints during short pulses - exceeding this boundary risks localized hot-spot formation and bond-wire failure, even if average power remains within limits.

SPP12N50C3XKSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: CoolMOS™

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 500 V

Current - Continuous Drain (Id) @ 25°C:: 11.6A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 10V

Rds On (Max) @ Id, Vgs:: 380mOhm @ 7A, 10V

Vgs(th) (Max) @ Id:: 3.9V @ 500µA

Gate Charge (Qg) (Max) @ Vgs:: 49 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 1200 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 125W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: PG-TO220-3-1

SPP12N50C3XKSA1 FAQ

1.How can I place an order for SPP12N50C3XKSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for SPP12N50C3XKSA1 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 SPP12N50C3XKSA1 reliable?

The price and inventory of SPP12N50C3XKSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SPP12N50C3XKSA1 is usually 5 days.

3.What payment methods are accepted for SPP12N50C3XKSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SPP12N50C3XKSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SPP12N50C3XKSA1?

SPP12N50C3XKSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SPP12N50C3XKSA1 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 SPP12N50C3XKSA1?

For technical support, including SPP12N50C3XKSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SPP12N50C3XKSA1 requirements.

6.How does Aetrix verify that SPP12N50C3XKSA1 is sourced from the original manufacturer or authorized distributors?

All SPP12N50C3XKSA1 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 SPP12N50C3XKSA1 meets industry standards.

7.What is the process for return or replacement of SPP12N50C3XKSA1?

All SPP12N50C3XKSA1 units undergo pre-shipment inspection (PSI). If there is an issue with SPP12N50C3XKSA1, 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 SPP12N50C3XKSA1 part is unused and in its original packaging.

Return procedure for SPP12N50C3XKSA1:

1.Submit a request within 90 days.

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

Tech Hub

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…

2026-07-17 Raspberry Pi Alternatives: Chip-Level Comparison, Compatibility and Replacement Guide

Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…

2026-07-13 How to Test Dynamic Load Response in Low-Voltage High-Current Buck Converters

Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…

2026-07-08 Output Capacitor Selection for High-Current ASIC Vcore Rails

Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…

2026-07-07 High-Current ASIC Core Power Supply Design: 12-Phase Buck, PMBus and Dynamic Load Response

Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …

2026-07-06 Voltage Regulator: Types, Circuits, Testing and Selection Guide

Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.