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

Infineon Technologies SPI16N50C3

Name: SPI16N50C3
Brand: Infineon Technologies
SKU: SPI16N50C3
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SPI16N50C3

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-262-3 Long Leads, I2PAK, TO-262AA

Datasheet:: SPI16N50C3.pdf

Description:: N-CHANNEL POWER MOSFET

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SPI16N50C3 from Infineon Technologies is a 500 V, 16 A N-channel enhancement-mode CoolMOS™ power MOSFET in PG-TO262 (TO-262) package, featuring R_DS(on) = 0.28 Ω at V_GS = 10 V and T_j = 25 °C, ultra-low gate charge (Q_g = 66 nC), and periodic avalanche rating. It serves as a high-efficiency primary-side switch in offline SMPS, PFC stages, and industrial AC-DC converters operating up to 150 °C junction temperature.

For engineers reviewing the SPI16N50C3 datasheet, SPI16N50C3 pinout, SPI16N50C3 application, or SPI16N50C3 equivalent, key selection criteria include its 500 V V_(BR)DSS, 0.28 Ω R_DS(on), 66 nC total gate charge, 50 V/ns dv/dt capability, and TO-262 thermal performance with R_thJC = 0.78 K/W - critical for high-density, high-reliability power designs.

Technical Context

This device implements Infineon's 3rd-generation CoolMOS™ superjunction technology, enabling significantly reduced conduction and switching losses compared to planar MOSFETs. Its optimized cell structure delivers low C_iss (1600 pF), C_oss (800 pF), and Cr_ss (30 pF), supporting high-frequency operation above 100 kHz in resonant and hard-switched topologies.

The MOSFET integrates a fast, soft-recovery body diode (t_rr = 420 ns, Q_rr = 7 µC) and is rated for repetitive avalanche (I_AR = 16 A, E_AR = 0.64 mJ) and extreme dv/dt (50 V/ns at T_j = 125 °C), making it suitable for ruggedized flyback, LLC, and half-bridge configurations with high bus voltage transients.

Key Specifications

Parameter	Value and Actual Design Meaning
V_(BR)DSS	500 V - Withstands 400 V DC link with 25 % margin; enables universal-input (85–265 VAC) offline converters.
R_DS(on)	0.28 Ω @ V_GS = 10 V, T_j = 25 °C - Delivers ≤ 45 W conduction loss at 16 A, reducing heatsink requirements.
Q_g	66 nC - Enables efficient gate drive with low-power controllers; reduces driver IC stress and switching loss.
t_r/t_f	8 ns / 8 ns @ V_DD = 380 V, I_D = 16 A - Supports clean, fast transitions minimizing overlap loss in hard-switched circuits.
R_thJC	0.78 K/W - Allows 160 W continuous dissipation at T_C = 25 °C; supports compact thermal design in TO-262 mounting.
E_AS	460 mJ - Provides robust single-pulse avalanche immunity during startup, overload, or short-circuit events.
dv/dt	50 V/ns @ V_DS = 400 V, I_D = 16 A, T_j = 125 °C - Ensures noise-immune operation in high-dV/dt environments like motor drives.

Pinout & Package

SPI16N50C3 is housed in a PG-TO262 (TO-262) 3-pin surface-mount-compatible package with isolated tab (2500 V_AC, 1 min). The drain-connected tab provides low-inductance, high-current path and direct thermal interface to heatsink.

Pin/Terminal	Circuit Role	Design Meaning
1 (Source)	Power return path for load current; referenced to gate drive ground	Low-impedance source terminal; connects to PCB ground plane or source resistor for current sensing.
2 (Gate)	Control input for channel conduction	High-impedance MOS gate requiring <20 V drive; sensitive to ESD and ringing - needs local RC snubber.
3 (Drain)	Main high-voltage power terminal; electrically connected to metal tab	Tab is drain potential - requires isolation from heatsink unless system ground is at high voltage; enables direct thermal coupling.

Key Features

Feature	Design Value
Ultra-low gate charge	Q_g = 66 nC - Reduces gate driver power consumption and enables use of cost-effective low-current drivers.
Periodic avalanche rated	E_AR = 0.64 mJ, I_AR = 16 A - Permits reliable operation under repetitive overvoltage stress without derating.
Extreme dv/dt immunity	50 V/ns at 125 °C - Prevents false turn-on in high-noise, high-speed switching applications such as inverters.
Low effective output capacitance	C_o(er) = 64 pF - Minimizes energy loss during turn-off and improves ZVS capability in resonant converters.
Soft-recovery body diode	t_rr = 420 ns, Q_rr = 7 µC - Reduces EMI and voltage overshoot during commutation in synchronous rectification or freewheeling paths.

Applications

Industrial AC-DC Power Supplies

Server & Telecom Rectifiers

Use Scenario: 1 kW active clamp forward or LLC resonant converter in DIN-rail mounted PLC power modules.

IC Role / Device Role / Timing Role: Primary-side high-side switch handling 400 V DC bus and delivering regulated 24 V/40 A output.

Use Value: 0.28 Ω R_DS(on) and 66 nC Q_g enable >94 % efficiency at full load while maintaining thermal headroom on compact heatsinks.

Use Scenario: High-density 3 kW telecom rectifier with interleaved PFC + phase-shifted full-bridge secondary.

IC Role / Device Role / Timing Role: Fast-switching PFC boost switch operating at 70–100 kHz with zero-voltage switching assist.

Use Value: Low C_iss/C_oss and 50 V/ns dv/dt rating ensure stable operation across wide line/load variations and reduce EMI filter size.

Motor Drive Inverters

LED Streetlight Drivers

Use Scenario: 3-phase 7.5 kW HVAC inverter with 600 V DC bus and 15 kHz PWM carrier frequency.

IC Role / Device Role / Timing Role: Upper-leg IGBT replacement in 6-pack module configuration for improved efficiency and thermal response.

Use Value: Avalanche-rated operation withstands inductive kickback during fault conditions; R_thJC = 0.78 K/W allows direct heatsink mounting without thermal pads.

Use Scenario: Outdoor 150 W constant-current LED driver with universal input and IP67 enclosure.

IC Role / Device Role / Timing Role: Primary-side switch in flyback topology with integrated X-cap discharge and surge protection.

Use Value: 500 V breakdown voltage and 460 mJ E_AS support compliance with IEC 61000-4-5 Level 4 (4 kV surge) without external clamping.

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
STP16N50M2 (STMicroelectronics)	R_DS(on) = 0.32 Ω, Q_g = 52 nC, TO-220 package, no avalanche rating	Limited to non-avalanche-critical PFC and flyback; lower thermal resistance not available	Prefer when gate drive power is constrained but avalanche immunity is not required.
IPP60R190C7 (Infineon)	600 V, R_DS(on) = 0.19 Ω, Q_g = 63 nC, TO-220FP package, higher voltage margin	Better suited for 480 VAC industrial systems; higher cost and larger footprint than TO-262	Select when 600 V rating and lower R_DS(on) justify added cost and board space.

Compared with STP16N50M2, SPI16N50C3 offers superior avalanche ruggedness and lower R_DS(on); versus IPP60R190C7, it trades 100 V headroom for TO-262 thermal advantage and lower system-level cost in 400 V DC bus designs.

Availability

SPI16N50C3 is available at Aetrix Electronics and suitable for industrial AC-DC power supplies, server rectifiers, and LED streetlight drivers requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for SPI16N50C3 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.

SPI16N50C3 belongs to the CoolMOS™ C3 family, engineered specifically for high-efficiency, high-reliability switched-mode power conversion in industrial, telecom, and lighting applications demanding low R_DS(on), fast switching, and rugged transient performance.

FAQ

Is SPI16N50C3 pin-compatible with standard TO-220 MOSFETs?

No - SPI16N50C3 uses PG-TO262 (TO-262), which has identical pinout numbering (G-D-S) but a wider body, different lead spacing, and an isolated drain tab. PCB layout must accommodate 10.16 mm lead pitch and tab isolation requirements; mechanical compatibility with TO-220 heatsinks is not guaranteed.

What is the maximum recommended gate drive voltage?

The absolute maximum gate-source voltage is ±20 V DC and ±30 V AC (f >1 Hz). For reliable operation, gate drive should be limited to 10–15 V with tight control of overshoot; exceeding 18 V risks permanent threshold shift or oxide damage, especially at elevated temperatures.

Does SPI16N50C3 require a gate resistor for stability?

Yes - a series gate resistor (typically 5–22 Ω) is mandatory to dampen parasitic oscillation caused by gate-drain Miller capacitance and PCB inductance. Without it, ringing can cause false turn-on, increased switching loss, and EMI compliance failure - particularly in high-dv/dt layouts.

Can SPI16N50C3 replace SPP16N50C3 in existing designs?

Yes - SPI16N50C3 and SPP16N50C3 share identical electrical specifications, thermal characteristics, and pinout, differing only in package (TO-262 vs. TO-220) and marking. Thermal design must be re-validated due to TO-262's lower R_thJC (0.78 K/W vs. 0.95 K/W for TO-220), allowing higher power density.

SPI16N50C3 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: CoolMOS™

Package/Case:: TO-262-3 Long Leads, I2PAK, TO-262AA

Packaging:: Bulk

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 500 V

Current - Continuous Drain (Id) @ 25°C:: 16A (Tc)

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

Rds On (Max) @ Id, Vgs:: 280mOhm @ 10A, 10V

Vgs(th) (Max) @ Id:: 3.9V @ 675µA

Gate Charge (Qg) (Max) @ Vgs:: 66 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 1600 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 160W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: PG-TO262-3-1

SPI16N50C3 FAQ

1.How can I place an order for SPI16N50C3 through Aetrix?

Please submit a Request for Quotation (RFQ) for SPI16N50C3 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 SPI16N50C3 reliable?

The price and inventory of SPI16N50C3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SPI16N50C3 is usually 5 days.

3.What payment methods are accepted for SPI16N50C3?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SPI16N50C3 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SPI16N50C3?

SPI16N50C3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SPI16N50C3 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 SPI16N50C3?

For technical support, including SPI16N50C3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SPI16N50C3 requirements.

6.How does Aetrix verify that SPI16N50C3 is sourced from the original manufacturer or authorized distributors?

All SPI16N50C3 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 SPI16N50C3 meets industry standards.

7.What is the process for return or replacement of SPI16N50C3?

All SPI16N50C3 units undergo pre-shipment inspection (PSI). If there is an issue with SPI16N50C3, 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 SPI16N50C3 part is unused and in its original packaging.

Return procedure for SPI16N50C3:

1.Submit a request within 90 days.

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

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