SPW11N60CFDFKSA1 Equivalent & Substitute Parts

Part Overview

The SPW11N60CFDFKSA1 is an N-Channel 650V 11A MOSFET manufactured by Infineon Technologies in the CoolMOS™ series, housed in a TO-247-3 through-hole package. This device is rated for 125W power dissipation and operates across a temperature range of -55°C to 150°C. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for design continuity and procurement planning. Substitute parts must maintain compatibility across voltage ratings, current handling, thermal characteristics, and package form factors to ensure reliable circuit operation.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	650	V
Continuous Drain Current (Id) @ 25°C	11	A
On-State Resistance (Rds On) @ 7A, 10V	440	mOhm
Gate Threshold Voltage (Vgs(th)) @ 500µA	5	V
Gate Charge (Qg) @ 10V	64	nC
Maximum Gate Voltage (Vgs)	±20	V
Input Capacitance (Ciss) @ 25V	1200	pF
Power Dissipation (Max)	125	W
Operating Temperature Range	-55 to 150	°C
Package Type	TO-247-3	—
Mounting Type	Through Hole	—

Substitute Part Grouping Explanation

Substitution eligibility for the SPW11N60CFDFKSA1 is determined by the following critical parameters:

Voltage Rating Compatibility: Substitute parts must have a Drain to Source Voltage (Vdss) rating equal to or greater than 650V. This ensures the device can withstand the same or higher voltage stress without breakdown.

Current Handling: Continuous Drain Current (Id) at 25°C must be equal to or greater than 11A to maintain equivalent or superior current-carrying capacity.

On-State Resistance (Rds On): Lower or comparable Rds On values indicate better or equivalent switching efficiency and reduced power losses during conduction.

Gate Charge (Qg): Lower gate charge values reduce switching losses and improve gate drive efficiency, though higher values remain functionally acceptable if other parameters are met.

Package and Mounting: All substitutes must use TO-247-3 through-hole packaging to ensure mechanical and thermal compatibility with existing PCB layouts and heatsinking arrangements.

Temperature Range: Operating temperature range must span -55°C to 150°C minimum to maintain thermal compatibility.

Product Status: Active product status is preferred for long-term availability and supply chain reliability, though obsolete parts may serve as temporary solutions.

Parameter Comparison

Parameter	SPW11N60CFDFKSA1	IXFH14N60P	IXFH16N60P3	IXTH12N65X2	STW13NK60Z
Manufacturer	Infineon	IXYS	IXYS	IXYS	STMicroelectronics
Vdss (V)	650	600	600	650	600
Id @ 25°C (A)	11	14	16	12	13
Rds On @ 10V (mOhm)	440	550	470	300	550
Vgs(th) (V)	5	5.5	5	5	4.5
Qg @ 10V (nC)	64	36	36	17	92
Ciss @ 25V (pF)	1200	2500	1830	1100	2030
Power Dissipation (W)	125	300	347	180	150
Vgs (Max) (V)	±20	±30	±30	±30	±30
Operating Temp (°C)	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150
Package	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	REACH Unaffected	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

IXTH12N65X2 (Primary Recommendation)

The IXTH12N65X2 from IXYS provides the closest electrical match to the SPW11N60CFDFKSA1. It maintains the 650V voltage rating, exceeds the 11A current requirement with 12A capability, and delivers superior on-state resistance of 300mOhm compared to the original 440mOhm. The significantly lower gate charge of 17nC reduces switching losses and improves efficiency. This part is actively manufactured, ROHS3 compliant, and available in high inventory (1230 pcs). The Ultra X2 series technology ensures modern performance characteristics while maintaining full TO-247-3 package compatibility.

IXFH16N60P3 (Secondary Recommendation)

The IXFH16N60P3 offers the highest current capacity at 16A and superior power dissipation rating of 347W, providing substantial design margin. Although the voltage rating is reduced to 600V, this remains acceptable for applications where the original 650V specification includes design margin. The 470mOhm on-state resistance and 36nC gate charge represent good efficiency characteristics. Active product status, ROHS3 compliance, and high inventory (1062 pcs) support long-term availability. This part is suitable for applications requiring higher current headroom.

IXFH14N60P (Tertiary Recommendation)

The IXFH14N60P provides 14A continuous current with 300W power dissipation capability. The 600V voltage rating is lower than the original specification but acceptable for designs with adequate margin. The 550mOhm on-state resistance is higher than preferred but remains functional. Active status and ROHS3 compliance ensure supply chain continuity. This part is suitable as an interim solution where 650V rating is not critical.

STW13NK60Z (Alternative Consideration)

The STW13NK60Z from STMicroelectronics delivers 13A current with 150W power dissipation. The 600V voltage rating is lower than the original 650V specification. The 550mOhm on-state resistance and 92nC gate charge represent less favorable efficiency characteristics compared to other alternatives. However, active product status, ROHS3 compliance, and very high inventory (2765 pcs) provide excellent supply availability. This part is suitable only when voltage derating is acceptable and supply continuity is prioritized.

Compliance and Certification:

All substitute parts maintain REACH compliance and EAR99 ECCN classification consistent with the original part. ROHS3 compliance of all active substitutes ensures regulatory alignment for new designs. Moisture Sensitivity Level 1 (Unlimited) is maintained across all alternatives, eliminating special handling requirements.

Frequently Asked Questions (FAQ)

Q: Can the IXTH12N65X2 directly replace the SPW11N60CFDFKSA1 without circuit modifications?

A: Yes. The IXTH12N65X2 maintains the same 650V voltage rating, exceeds the 11A current requirement, and uses identical TO-247-3 packaging. The superior on-state resistance (300mOhm vs. 440mOhm) and lower gate charge (17nC vs. 64nC) represent performance improvements that do not require circuit redesign. Pin configuration and thermal characteristics are compatible.

Q: Why do some substitutes have lower voltage ratings (600V vs. 650V)?

A: The IXFH14N60P, IXFH16N60P3, and STW13NK60Z are rated at 600V instead of 650V. These parts are acceptable substitutes if the original circuit design includes adequate voltage margin above the maximum operating voltage. In applications where the full 650V rating is essential, the IXTH12N65X2 is the appropriate choice as it maintains the 650V specification.

Q: What is the significance of gate charge (Qg) differences between parts?

A: Gate charge directly affects switching losses and gate drive circuit requirements. Lower gate charge (IXTH12N65X2 at 17nC) reduces switching losses and allows faster switching with lower gate drive power. Higher gate charge (STW13NK60Z at 92nC) increases switching losses but does not prevent substitution if the gate drive circuit has adequate current capacity. Existing gate drive circuits designed for 64nC will function with lower Qg values without modification.

Q: Are all substitute parts available in the same packaging?

A: Yes. All substitute parts use TO-247-3 through-hole packaging, ensuring mechanical compatibility with existing PCB layouts. Pin assignments and heatsink mounting interfaces are identical, allowing direct physical replacement without PCB modifications.

Q: What is the impact of on-state resistance (Rds On) differences?

A: On-state resistance determines conduction losses during normal operation. Lower Rds On values (IXTH12N65X2 at 300mOhm) reduce power dissipation and heat generation. Higher values (IXFH14N60P and STW13NK60Z at 550mOhm) increase conduction losses but remain functional if thermal management is adequate. The original SPW11N60CFDFKSA1 at 440mOhm falls between these extremes.

Q: Why is product status (Active vs. Obsolete) important for substitution?

A: Active products have guaranteed long-term manufacturing and supply availability, supporting production continuity and future design iterations. Obsolete parts like the original SPW11N60CFDFKSA1 face eventual supply exhaustion and cannot be relied upon for new production runs. All recommended substitutes are active products, ensuring sustainable supply chains.

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

A: The IXTH12N65X2 and IXFH16N60P3 are fully interchangeable due to identical pin configuration and TO-247-3 packaging. However, if switching between parts with different gate charge values (particularly the STW13NK60Z at 92nC), verify that the gate drive circuit has sufficient current capacity. The IXFH14N60P and STW13NK60Z are interchangeable with each other but represent lower performance than the primary recommendations.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts maintain REACH compliance and EAR99 ECCN classification. The active substitutes (IXFH14N60P, IXFH16N60P3, IXTH12N65X2, STW13NK60Z) are ROHS3 compliant, meeting current regulatory requirements for new product designs. Moisture Sensitivity Level 1 (Unlimited) eliminates special storage and handling requirements.

Q: How do I determine which substitute is best for my specific application?

A: Selection depends on three factors: (1) Voltage requirement—if 650V is mandatory, use IXTH12N65X2; if 600V is acceptable, all others are viable. (2) Current headroom—if maximum current capacity is needed, use IXFH16N60P3 (16A); for standard requirements, IXTH12N65X2 (12A) is sufficient. (3) Supply priority—if inventory availability is critical, STW13NK60Z offers the highest stock level (2765 pcs).

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