IXKP20N60C5 N-Channel 600V 20A MOSFET Equivalent & Substitute Parts

Part Overview

The IXKP20N60C5 is an N-Channel 600V 20A through-hole MOSFET manufactured by IXYS in the CoolMOS™ series. This device is rated for continuous drain current of 20A at 25°C case temperature with a maximum drain-source voltage of 600V. The part is packaged in TO-220-3 and is currently classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary for new designs and ongoing production requirements. Suitable alternatives must maintain electrical compatibility within the specified voltage, current, and thermal operating ranges while accommodating the through-hole TO-220 package format.

Key Parameters

Parameter	Value	Unit
Drain-Source Voltage (Vdss)	600	V
Continuous Drain Current (Id) @ 25°C	20	A
On-State Resistance (Rds On) @ 10A, 10V	200	mOhm
Gate Threshold Voltage (Vgs(th)) @ 1.1mA	3.5	V
Gate Charge (Qg) @ 10V	45	nC
Input Capacitance (Ciss) @ 100V	1520	pF
Gate Voltage Range (Vgs)	±20	V
Operating Temperature Range	-55 to 150	°C (TJ)
Package Type	TO-220-3	Through Hole
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the IXKP20N60C5 is determined by the following critical electrical and mechanical parameters:

Voltage Rating: Substitute parts must have a drain-source voltage (Vdss) rating equal to or greater than 600V. Parts rated at 650V are acceptable as they provide additional voltage margin.

Current Rating: Substitute parts must support continuous drain current (Id) at 25°C case temperature equal to or greater than 20A. Parts rated at 20A, 20.6A, 20.7A, 22A, or higher are acceptable.

On-State Resistance: Rds On values must be within acceptable limits for the specified current and gate voltage (10V). Values ranging from 170mOhm to 200mOhm are functionally equivalent.

Package Type: All substitutes must use through-hole TO-220 or TO-220-3 packaging to maintain mechanical compatibility with existing PCB layouts and thermal management solutions.

Gate Voltage Compatibility: Gate voltage ratings of ±20V or ±30V are compatible; ±25V ratings are also acceptable.

Operating Temperature: All substitutes must support the full operating range of -55°C to 150°C (TJ).

Compliance: RoHS3 compliance is required for new designs. Product status (Active vs. Obsolete) determines long-term availability.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On @ 10V (mOhm)	Vgs(th) (V)	Qg @ 10V (nC)	Ciss @ 100V (pF)	Vgs Max (±V)	Package	Status
IXKP20N60C5	IXYS	600	20	200 @ 10A	3.5 @ 1.1mA	45	1520	±20	TO-220-3	Obsolete
IXTP20N65X2	IXYS	650	20	185 @ 10A	4.5 @ 250µA	27	1450	±30	TO-220-3	Active
SPP20N60C3XKSA1	Infineon	600	20.7	190 @ 13.1A	3.9 @ 1mA	114	2400	±20	TO-220-3	Active
AOT20S60L	Alpha & Omega	600	20	199 @ 10A	4.1 @ 250µA	19.8	1038	±30	TO-220-3	Not For New Designs
AOT27S60L	Alpha & Omega	600	27	160 @ 13.5A	4 @ 250µA	26	1294	±30	TO-220-3	Not For New Designs
FCP16N60N	Fairchild	600	16	199 @ 8A	4 @ 250µA	52.3	2170	±30	TO-220-3	Active
FCP170N60	Fairchild	600	22	170 @ 11A	3.5 @ 250µA	55	2860	±20	TO-220-3	Active
FCP190N60E	onsemi	600	20.6	190 @ 10A	3.5 @ 250µA	82	3175	±20	TO-220-3	Not For New Designs
STP20N65M5	STMicroelectronics	650	18	190 @ 9A	5 @ 250µA	45	1345	±25	TO-220-3	Active
STP21N65M5	STMicroelectronics	650	17	190 @ 8.5A	5 @ 250µA	50	1950	±25	TO-220-3	Active
STP24N60DM2	STMicroelectronics	600	18	200 @ 9A	5 @ 250µA	29	1055	±25	TO-220-3	Active

Engineering Selection Recommendations

Primary Recommendation for New Designs:

IXTP20N65X2 (IXYS, Active) is the manufacturer-recommended direct substitute. It maintains the same 20A continuous drain current rating, improves on-state resistance (185mOhm vs. 200mOhm), and provides higher voltage margin at 650V. The part is in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating. Gate charge is significantly reduced (27nC vs. 45nC), improving switching performance.

Alternative for Exact Voltage Match:

SPP20N60C3XKSA1 (Infineon, Active) provides an exact 600V voltage match with slightly higher current rating (20.7A) and improved on-state resistance (190mOhm). This part is in active production with RoHS3 compliance. Higher gate charge (114nC) may require gate driver adjustment in high-frequency applications.

Current Production Alternatives:

FCP170N60 (Fairchild, Active) offers 22A continuous current with superior on-state resistance (170mOhm @ 11A). This part provides performance headroom for thermal management and is actively produced.

STP24N60DM2 (STMicroelectronics, Active) maintains exact 600V rating with 18A current capability and low gate charge (29nC), suitable for applications prioritizing switching speed.

Parts Not Recommended for New Designs:

AOT20S60L, AOT27S60L, and FCP190N60E are classified as "Not For New Designs" and should be used only for legacy system maintenance or repair applications where supply chain continuity is critical.

Parts with Current Limitations:

FCP16N60N (16A) and STP20N65M5 (18A) have continuous drain current ratings below the 20A requirement and are suitable only for applications with reduced current demands.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with higher voltage rating (650V) in place of the 600V IXKP20N60C5?

A: Yes. Higher voltage ratings provide additional safety margin and are electrically compatible. Parts such as IXTP20N65X2, STP20N65M5, and STP21N65M5 rated at 650V are direct substitutes. The circuit will operate within normal parameters.

Q: What is the minimum continuous drain current rating required for a substitute?

A: The substitute must support at least 20A continuous drain current at 25°C case temperature. Parts rated at 20A, 20.6A, 20.7A, 22A, or higher are acceptable. Parts with lower ratings (16A, 17A, 18A) are not suitable unless the application circuit is redesigned for reduced current.

Q: Are all substitute parts compatible with the same PCB layout and heatsink?

A: Yes. All substitute parts use the TO-220-3 through-hole package with identical pin configuration and thermal interface dimensions. No PCB layout modifications are required. Heatsink mounting is directly compatible.

Q: Does on-state resistance variation affect circuit performance?

A: On-state resistance (Rds On) directly affects power dissipation and heat generation. Substitute parts with lower Rds On values (170mOhm to 190mOhm) generate less heat than the original 200mOhm specification. This improves thermal performance. Higher Rds On values increase heat dissipation and may require thermal design review.

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

A: Gate charge affects switching speed and gate driver power requirements. Lower gate charge (27nC for IXTP20N65X2) enables faster switching and reduces gate driver stress. Higher gate charge (114nC for SPP20N60C3XKSA1) may require gate driver adjustment in high-frequency applications but does not prevent substitution.

Q: Can I use parts rated for ±30V gate voltage in circuits designed for ±20V?

A: Yes. Parts with ±30V or ±25V gate voltage ratings are backward compatible with ±20V designs. The higher rating provides additional safety margin. No circuit modification is required.

Q: Why is product status (Active vs. Obsolete vs. Not For New Designs) important?

A: Product status indicates long-term availability and manufacturer support. Active parts are in current production with guaranteed supply. Obsolete parts have limited remaining inventory. "Not For New Designs" parts are being phased out and should not be used in new product development. For new designs, select only Active status parts.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed are RoHS3 compliant. This compliance is required for products sold in regulated markets and ensures environmental and health safety standards are met.

Q: What is the difference between TO-220 and TO-220-3 packaging?

A: TO-220-3 and TO-220 refer to the same three-lead through-hole package format. Both designations are used interchangeably by different manufacturers. All parts in this comparison use identical mechanical and electrical interfaces.

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