47N60C3 MOSFET: Pinout, Specifications, Operating Frequency and Replacements

Alice lee
July 10, 2026

The 47N60C3 MOSFET, formally identified as Infineon SPW47N60C3, is a high-voltage N-channel power MOSFET based on CoolMOS C3 superjunction technology. It is commonly associated with power-factor-correction stages, offline AC-DC power supplies, industrial power conversion and maintenance of legacy switching equipment.

The device uses a three-lead PG-TO247 package. Its headline specifications include a 600 V minimum drain-source breakdown voltage, a 47 A continuous drain-current rating at a 25°C case temperature and a maximum on-resistance of 70 mΩ under the datasheet’s stated test conditions.

One point often causes confusion: the datasheet also presents a 650 V value in its summary. That does not mean every circuit can operate continuously at 650 V. The 600 V and 650 V values appear under different definitions and must be interpreted together with temperature, overshoot, transient energy and design margin.

47N60C3 Key Specifications

Parameter	Value	Notes
Full part number	SPW47N60C3	Infineon device designation
Package marking	47N60C3	Marking printed on the body
MOSFET type	N-channel	High-voltage power MOSFET
Technology	CoolMOS C3	Superjunction generation
Package	PG-TO247	Three-lead through-hole package
Minimum VBR(DSS)	600 V	VGS = 0 V, ID = 0.25 mA
Datasheet summary voltage	650 V	Listed at maximum junction temperature
Continuous drain current	47 A	TC = 25°C
Continuous drain current	30 A	TC = 100°C
Pulsed drain current	141 A	Limited by junction temperature
Maximum RDS(on)	70 mΩ	VGS = 10 V, ID = 30 A, Tj = 25°C
Typical RDS(on) at 150°C	160 mΩ	Shows strong temperature dependence
Typical total gate charge	252 nC	VDD = 350 V, ID = 47 A
Maximum total gate charge	320 nC	Same test conditions
Maximum junction temperature	150°C	Datasheet limit
Junction-to-case thermal resistance	0.3 K/W max	Requires effective heatsinking

These are datasheet ratings, not automatic operating targets. Current, power dissipation and voltage capability depend on case temperature, switching conditions, pulse duration, layout and the thermal system.

47N60C3 Pinout

When the front marking faces the viewer and the leads point downward, the pin arrangement is:

Pin	Terminal	Function
1	Gate	Controls MOSFET turn-on and turn-off
2	Drain	High-voltage switching terminal
3	Source	Current return and gate-driver reference

The mounting tab and mechanical dimensions should be checked against the exact Infineon package drawing before PCB or heatsink design. A visually similar TO-247 component is not automatically mechanically or electrically interchangeable.

What CoolMOS C3 Means

CoolMOS is Infineon’s high-voltage superjunction MOSFET technology. Compared with older planar MOSFET structures, superjunction devices can reduce on-resistance for a given breakdown-voltage class and die area.

The C3 family is now an older generation. Newer CoolMOS products may have lower gate charge, lower switching loss or different output-capacitance behavior. Those improvements can be useful, but they can also make a replacement switch faster. Faster switching may increase drain-voltage overshoot, ringing and electromagnetic interference unless the gate resistance, snubber and PCB layout are rechecked.

For that reason, a newer MOSFET should not be selected only because its voltage and RDS(on) values appear better.

Is the 47N60C3 a 600 V or 650 V MOSFET?

Both values appear in the official datasheet:

The static electrical-characteristics table specifies a 600 V minimum drain-source breakdown voltage.
The datasheet summary lists 650 V at maximum junction temperature.
A typical avalanche breakdown value of 700 V is also shown under another defined condition.

The safe design voltage must consider the guaranteed minimum rating, DC-link variation, line surges, leakage inductance, PCB parasitics and turn-off overshoot. A power supply using a nominal 400 V DC bus can produce substantially higher drain peaks during switching.

The correct engineering approach is to measure the actual drain waveform and maintain sufficient margin below the relevant breakdown limit. The 650 V label should not be used as permission to operate close to 650 V without transient control and validation.

47N60C3 Operating Frequency

The SPW47N60C3 datasheet does not specify one universal maximum switching frequency.

Practical frequency depends on:

Bus voltage and drain current
Gate-driver voltage and peak current
Total gate charge and Miller charge
Turn-on and turn-off time
Output capacitance
Body-diode behavior
Circuit topology and dead time
Heatsink performance
Allowable efficiency loss
EMI requirements

Infineon documented the SPW47N60C3 in a 1 kW PFC efficiency comparison operating at 70 kHz. This proves that the device was used at 70 kHz under that particular circuit and test condition. It does not establish 70 kHz as a universal recommendation or maximum rating.

A basic gate-drive power estimate is:

P g a t e = Q_{g} \times V_{G S} \times f_{s}

Using a typical gate charge of 252 nC and a 10 V gate drive:

Frequency	Approximate gate-charging power
20 kHz	0.050 W
70 kHz	0.176 W
100 kHz	0.252 W

This calculation covers gate charging only. It excludes switching overlap, output-capacitance loss, reverse-recovery loss, driver loss and conduction loss. Those losses usually determine whether a selected frequency is practical.

The device should be driven by a suitable gate-driver circuit. A microcontroller GPIO is generally not appropriate because the MOSFET is not specified as a logic-level device, its RDS(on) is rated at 10 V gate drive and its gate charge is relatively high.

Applications

Typical evaluation areas for the 47N60C3 include:

Boost PFC stages
Offline AC-DC switch-mode power supplies
High-voltage PWM converters
Industrial power-conversion equipment
Legacy power-supply repair
Existing BOM continuity and controlled redesign

Application suitability still depends on the actual topology. A MOSFET that works in a PFC boost stage may not behave the same way in a hard-switched bridge, inverter or motor-drive circuit. Body-diode recovery, dead time, peak current and switching-node layout can change the result substantially.

Circuit and Thermal Design Considerations

he published 70 mΩ maximum RDS(on) applies at 25°C with a 10 V gate drive and 30 A drain current. At higher junction temperature, resistance rises. The datasheet shows a typical value near 160 mΩ at 150°C, more than twice the typical room-temperature value.

A first-order conduction-loss estimate is:

P c o n d = I_{R M S}^{2} \times R_{D S (o n)}

Switching loss also increases with frequency and switching time. Slow gate drive reduces overshoot but can increase switching loss. Very fast gate drive may reduce transition time but increase ringing and EMI. The final gate resistance should therefore be selected by measurement rather than copied directly from a datasheet test circuit.

The datasheet’s 415 W power-dissipation figure assumes a tightly controlled case temperature of 25°C. It is not a free-air rating. Practical thermal design must include:

Junction-to-case resistance
Thermal-interface resistance
Heatsink-to-ambient resistance
Airflow and enclosure temperature
Conduction and switching losses
Nearby heat sources
Production tolerances

Worst-case temperature should be verified under high line, maximum load, low airflow and the highest expected ambient temperature.

47N60C3 Replacements

The IPW60R060C7 has lower RDS(on) and much lower gate charge, but its current rating and dynamic behavior differ. It should be treated as a redesign candidate requiring new gate-drive, thermal and switching validation.

Before approving any replacement, compare:

Minimum breakdown voltage and transient margin
Current rating under the same temperature condition
Maximum RDS(on) at the same gate voltage
Total gate charge, Miller charge and gate plateau
Output capacitance and stored energy
Body-diode recovery performance
Safe operating area and avalanche capability
Pinout, tab connection and package dimensions
Junction-to-case thermal resistance
Drain overshoot, ringing, EMI and temperature in the real circuit

Testing and Troubleshooting

Before testing, disconnect power and fully discharge the DC-link capacitor. High-voltage capacitors may remain dangerous after the equipment is unplugged.

A failed MOSFET often shows a drain-to-source short or abnormal gate leakage, but in-circuit readings can be influenced by transformers, rectifiers, snubbers or parallel devices. Remove or isolate the MOSFET when measurements are unclear.

Do not replace the MOSFET without checking the surrounding circuit. Common related faults include:

Damaged gate-driver IC
Failed gate resistor or pull-down resistor
Shorted rectifier
Current-sense fault
Open or damaged snubber
Excessive DC-bus voltage
Transformer or boost-inductor fault
Output short circuit

During powered validation, measure gate voltage, drain overshoot, ringing, switching time and device temperature with suitable high-voltage equipment.

Lifecycle and Sourcing

The SPW47N60C3 is an older CoolMOS C3 product, and Mouser lists it as NRND — Not Recommended for New Designs. NRND does not automatically prove that every ordering code is discontinued, but it is a warning to verify supply status before committing to a new design.

When sourcing, confirm:

Complete part number and manufacturer
Package marking
Date code and lot code
Packaging type
RoHS and traceability requirements
Current lifecycle status
Whether an approved alternative is acceptable

For maintenance projects, provide the original BOM line and circuit application rather than requesting only a “47N60C3 equivalent.”

FAQ

What is the full part number?

The complete Infineon part number is SPW47N60C3. The device body is marked 47N60C3.

What is the 47N60C3 pinout?

With the front marking facing the viewer and the leads pointing downward: pin 1 is Gate, pin 2 is Drain and pin 3 is Source.

Is it a logic-level MOSFET?

No. Its maximum RDS(on) is specified at VGS = 10 V. The threshold-voltage range only indicates the beginning of conduction at a very small current.

What is its maximum switching frequency?

The datasheet does not state one universal maximum. Frequency must be selected from switching loss, gate drive, topology, thermal performance and EMI. The documented 70 kHz PFC example is a specific operating point, not a general limit.

What is the best replacement?

IPW60R070C6 has the strongest historical Infineon cross-reference. FCH47N60 is a close-specification candidate, while IPW60R060C7 is better treated as a redesign option. All require circuit-level validation.

Conclusion

The SPW47N60C3 is a high-voltage N-channel CoolMOS C3 MOSFET in a PG-TO247 package. Its main verified specifications are a 600 V minimum breakdown voltage, 47 A continuous drain current at a 25°C case temperature, 70 mΩ maximum RDS(on) at 10 V gate drive and 252 nC typical total gate charge.

It does not have a single datasheet-defined maximum operating frequency. The correct frequency depends on switching losses, gate-driver capability, thermal design, overshoot and EMI.

For replacement work, IPW60R070C6 is the strongest historical manufacturer cross-reference, while FCH47N60 and IPW60R060C7 may suit different sourcing or redesign goals. None should be treated as automatically interchangeable without checking pinout, thermal performance, dynamic behavior and the real switching waveform.

References

Alice lee

Business Manager

Focused on the electronic components sector, the author shares industry knowledge, product insights, and sourcing perspectives related to modern electronics manufacturing. With close attention to market trends, component applications, and supply chain developments, the content is designed to support engineers, buyers, and businesses in making more informed decisions.

Table of Contents