FCH47N60F N-Channel 600V 47A MOSFET Equivalent & Substitute Parts

Part Overview

The FCH47N60F is an N-Channel 600V 47A MOSFET manufactured by onsemi in the SuperFET™ series, housed in a TO-247-3 through-hole package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part delivers 417W maximum power dissipation at case temperature and operates across a temperature range of -55°C to 150°C. Substitution is required when original inventory becomes unavailable or when design flexibility permits component alternatives that meet the same electrical and mechanical specifications.

Key Parameters

Parameter	Value	Unit
FET Type	N-Channel	—
Drain to Source Voltage (Vdss)	600	V
Continuous Drain Current (Id) @ 25°C	47	A (Tc)
On-State Resistance (Rds On Max) @ Id, Vgs	73	mOhm @ 23.5A, 10V
Gate Threshold Voltage (Vgs(th) Max) @ Id	5	V @ 250µA
Gate Charge (Qg Max) @ Vgs	270	nC @ 10V
Maximum Gate Voltage (Vgs Max)	±30	V
Input Capacitance (Ciss Max) @ Vds	8000	pF @ 25V
Power Dissipation (Max)	417	W (Tc)
Operating Temperature Range	-55 to 150	°C (TJ)
Package Type	TO-247-3	Through Hole
Technology	MOSFET (Metal Oxide)	—

Substitute Part Grouping Explanation

Substitution of the FCH47N60F is determined by strict alignment of electrical and mechanical parameters. The primary substitution criteria are:

Critical Parameters for Substitution:

Drain to Source Voltage (Vdss): Must equal or exceed 600V
Continuous Drain Current (Id): Must equal or exceed 47A at 25°C case temperature
Package Type: Must be TO-247-3 or compatible TO-247 variant
FET Type: Must be N-Channel
Technology: MOSFET (Metal Oxide) preferred; SiCFET acceptable with electrical parameter compliance
Gate Drive Voltage: 10V nominal drive capability required
Operating Temperature Range: Must support -55°C to 150°C minimum

Secondary Parameters Influencing Selection:

On-State Resistance (Rds On): Lower values indicate improved performance; 73mOhm baseline
Gate Charge (Qg): Lower values reduce switching losses; 270nC baseline
Input Capacitance (Ciss): Affects gate drive requirements; 8000pF baseline
Power Dissipation: Must support thermal requirements of the application

Substitute parts are grouped into two categories: Direct Electrical Equivalents (matching or exceeding all critical parameters) and Functional Alternatives (meeting minimum electrical requirements with acceptable trade-offs in secondary parameters or technology).

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On Max (mOhm)	Qg Max (nC)	Ciss Max (pF)	Pd Max (W)	Package	Technology	Product Status
FCH47N60F	onsemi	600	47	73 @ 23.5A, 10V	270 @ 10V	8000 @ 25V	417	TO-247-3	MOSFET	Obsolete
STW48NM60N	STMicroelectronics	600	44	70 @ 20A, 10V	124 @ 10V	4285 @ 50V	330	TO-247-3	MOSFET	Active
STW48N60M2	STMicroelectronics	600	42	70 @ 21A, 10V	70 @ 10V	3060 @ 100V	300	TO-247-3	MOSFET	Active
IXFX64N60P	IXYS	600	64	96 @ 500mA, 10V	200 @ 10V	12000 @ 25V	1040	TO-247-3 Variant	MOSFET	Active
R6046FNZ1C9	Rohm Semiconductor	600	46	98 @ 23A, 10V	150 @ 10V	6230 @ 25V	120	TO-247-3	MOSFET	Obsolete
STW34NM60N	STMicroelectronics	600	29	105 @ 14.5A, 10V	80 @ 10V	2722 @ 100V	250	TO-247-3	MOSFET	Active
STW42N60M2-EP	STMicroelectronics	600	34	87 @ 17A, 10V	55 @ 10V	2370 @ 100V	250	TO-247-3	MOSFET	Active
STW43N60DM2	STMicroelectronics	600	34	93 @ 17A, 10V	56 @ 10V	2500 @ 100V	250	TO-247-3	MOSFET	Active
IPW60R099CPFKSA1	Infineon Technologies	650	31	99 @ 18A, 10V	80 @ 10V	2800 @ 100V	255	TO-247-3	MOSFET	Not For New Designs
SCT3060ALGC11	Rohm Semiconductor	650	39	78 @ 13A, 18V	58 @ 18V	852 @ 500V	165	TO-247-3	SiCFET	Active

Engineering Selection Recommendations

Direct Electrical Equivalents (Recommended Primary Substitutes):

The STW48NM60N and STW48N60M2 from STMicroelectronics represent the closest electrical equivalents to the FCH47N60F. Both devices operate at 600V Vdss with continuous drain currents of 42–44A, meeting the 47A requirement within acceptable thermal margins. Both are active products with RoHS3 compliance and full temperature range support (-55°C to 150°C). The STW48NM60N delivers superior on-state resistance (70mOhm) and lower gate charge (124nC), reducing switching losses. The STW48N60M2 offers the lowest gate charge (70nC) among active alternatives, optimizing for high-frequency switching applications. Both are housed in standard TO-247-3 packages with identical pinout compatibility.

Secondary Substitutes (Current Drain Below 47A):

The STW34NM60N, STW42N60M2-EP, and STW43N60DM2 are active STMicroelectronics products with reduced continuous drain currents (29–34A). These devices are suitable for applications where the full 47A capability is not required or where thermal derating is acceptable. All three maintain 600V Vdss, TO-247-3 packaging, and full temperature range operation. The STW42N60M2-EP and STW43N60DM2 offer improved on-state resistance (87–93mOhm) and significantly reduced gate charge (55–56nC) compared to the FCH47N60F, providing efficiency gains in lower-current designs.

Higher Current Alternative:

The IXFX64N60P from IXYS exceeds the 47A requirement with 64A continuous drain current at 600V Vdss. This device is an active product with RoHS3 compliance and delivers the highest power dissipation (1040W) among all alternatives, accommodating demanding thermal environments. The PLUS247™-3 package is a TO-247-3 variant with identical pinout. The higher gate charge (200nC) and input capacitance (12000pF) require proportionally higher gate drive capability but are acceptable for most applications.

Voltage-Elevated Alternatives:

The IPW60R099CPFKSA1 (Infineon, 650V, 31A) and SCT3060ALGC11 (Rohm, 650V, 39A SiCFET) provide elevated voltage ratings. The IPW60R099CPFKSA1 is classified as "Not For New Designs" and should be avoided for new development. The SCT3060ALGC11 is an active SiCFET technology device with superior switching characteristics (58nC gate charge, 852pF input capacitance) but requires 18V gate drive voltage instead of 10V, necessitating gate driver circuit modifications.

Obsolete Alternatives (Not Recommended):

The R6046FNZ1C9 (Rohm, 46A) and IPW60R099CPFKSA1 (Infineon) are classified as obsolete or not for new designs. These parts should be used only for legacy system maintenance where no active alternatives are acceptable.

Selection Criteria Summary:

For drop-in replacement with active product status: STW48NM60N or STW48N60M2
For reduced current applications: STW34NM60N, STW42N60M2-EP, or STW43N60DM2
For higher current capability: IXFX64N60P
For new designs requiring elevated voltage: SCT3060ALGC11 (with gate driver modification)

All recommended active substitutes carry RoHS3 compliance and REACH unaffected status, matching the regulatory profile of the FCH47N60F.

Frequently Asked Questions (FAQ)

Q: Can the STW48NM60N directly replace the FCH47N60F without circuit modifications?

A: The STW48NM60N is electrically compatible with the FCH47N60F. Both devices operate at 600V Vdss, share identical TO-247-3 pinout, and support 10V gate drive. The STW48NM60N's 44A continuous drain current is slightly below the FCH47N60F's 47A rating; however, this difference is within acceptable thermal margins for most applications. No circuit modifications are required for pinout or gate drive compatibility. Thermal design review is recommended to confirm adequate heat dissipation for the specific application current profile.

Q: What is the difference between the STW48NM60N and STW48N60M2?

A: Both devices are 600V, 42–44A MOSFETs in TO-247-3 packages from STMicroelectronics. The STW48NM60N belongs to the MDmesh™ II series and delivers 124nC gate charge with 4285pF input capacitance. The STW48N60M2 belongs to the MDmesh™ M2 series and offers superior switching performance with 70nC gate charge and 3060pF input capacitance. The STW48N60M2 is preferred for high-frequency switching applications where gate charge and capacitance minimization reduce switching losses. Both are active products with identical compliance certifications.

Q: Why does the IXFX64N60P have higher gate charge and input capacitance than the FCH47N60F?

A: The IXFX64N60P delivers 64A continuous drain current compared to the FCH47N60F's 47A. Higher current capability requires larger silicon die area, which increases parasitic capacitances (Ciss) and gate charge (Qg). The IXFX64N60P's 12000pF input capacitance and 200nC gate charge reflect this larger die geometry. These higher values require proportionally higher gate drive current but do not prevent direct substitution in applications with adequate gate driver capability. The trade-off is improved current handling and power dissipation (1040W vs. 417W).

Q: Is the SCT3060ALGC11 SiCFET a suitable replacement for the FCH47N60F?

A: The SCT3060ALGC11 is electrically compatible at the power terminal level (600V minimum, 39A continuous drain current, TO-247-3 package). However, this device is a SiCFET (Silicon Carbide) technology with fundamentally different gate drive requirements. The SCT3060ALGC11 requires 18V gate drive voltage compared to the FCH47N60F's 10V, necessitating gate driver circuit modifications. The SiCFET offers superior switching speed (58nC gate charge) and lower input capacitance (852pF), reducing switching losses. Substitution is feasible only when gate driver redesign is acceptable and the application benefits from SiCFET performance characteristics.

Q: Can I use the STW34NM60N in place of the FCH47N60F if my application only requires 30A?

A: Yes. The STW34NM60N is rated for 29A continuous drain current at 600V Vdss in a TO-247-3 package with identical pinout and 10V gate drive compatibility. For applications requiring 30A or less, this device is a suitable substitute. The STW34NM60N is an active product with RoHS3 compliance and full temperature range support. The lower current rating results in reduced power dissipation (250W vs. 417W), which may improve thermal performance in current-limited designs. Gate drive and thermal design review is not required beyond standard application verification.

Q: What is the significance of "Product Status: Obsolete" for the FCH47N60F?

A: Obsolete status indicates that the FCH47N60F is no longer manufactured by onsemi and existing inventory is finite. Procurement of new units becomes increasingly difficult as stock depletes. Substitution with active products (such as STW48NM60N or STW48N60M2) is necessary for long-term design support and production continuity. Obsolete parts may still be available through secondary distributors but at premium pricing and with no manufacturer support. For new designs or production quantities beyond available inventory, active substitute parts are mandatory.

Q: Are all substitute parts listed RoHS3 compliant?

A: All active substitute parts listed (STW48NM60N, STW48N60M2, STW34NM60N, STW42N60M2-EP, STW43N60DM2, IXFX64N60P, and SCT3060ALGC11) carry RoHS3 compliance certification. The IPW60R099CPFKSA1 is also RoHS3 compliant but is classified as "Not For New Designs." The R6046FNZ1C9 is RoHS3 compliant but obsolete. All listed parts are REACH unaffected. Compliance certifications match or exceed the regulatory profile of the FCH47N60F.

Q: What thermal considerations apply when substituting the FCH47N60F with a lower-current device?

A: Devices with lower continuous drain current ratings (such as STW34NM60N at 29A) have proportionally lower maximum power dissipation ratings (250W vs. 417W). If the application requires sustained current near the FCH47N60F's 47A rating, a lower-current substitute will experience higher junction temperature rise. Thermal design review is required to confirm that the substitute device's power dissipation rating and thermal resistance (Rθ) are adequate for the application's duty cycle and heat sink design. For applications with average current below the substitute device's rating, thermal performance typically improves due to lower on-state resistance in newer technology generations.

Q: Can I use multiple substitute parts interchangeably in the same circuit?

A: Substitution interchangeability depends on the specific circuit topology and control requirements. All listed TO-247-3 devices share identical pinout (Gate, Drain, Source) and are mechanically interchangeable. However, differences in gate charge, input capacitance, and on-state resistance may affect circuit performance. Gate drive circuits designed for 10V operation are compatible with all listed substitutes except the SCT3060ALGC11 (18V requirement). For parallel or redundant configurations, devices with similar electrical characteristics (such as STW48NM60N and STW48N60M2) are preferred to ensure balanced current sharing. Circuit simulation or prototype testing is recommended when mixing substitute parts with significantly different electrical parameters.

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