IXFH24N50 N-Channel 500V 24A MOSFET Equivalent & Substitute Parts

Part Overview

The IXFH24N50 is an N-Channel MOSFET manufactured by IXYS, rated for 500V drain-to-source voltage with 24A continuous drain current at 25°C. This device operates in the HiPerFET™ series and is housed in a TO-247AD through-hole package. The part is currently Active in product status with 2200 units in stock.

Equivalent and substitute parts are identified based on matching or closely aligned electrical and mechanical parameters within the N-Channel MOSFET category. Substitutes are necessary when the primary part becomes unavailable, when alternative manufacturers are required for supply chain diversification, or when design flexibility permits operation within the specified parameter ranges.

Key Parameters

Parameter	Value	Unit
FET Type	N-Channel	—
Drain to Source Voltage (Vdss)	500	V
Current - Continuous Drain (Id) @ 25°C	24	A (Tc)
Rds On (Max) @ Id, Vgs	230 mOhm @ 12A, 10V	—
Gate Charge (Qg) (Max) @ Vgs	160	nC @ 10V
Power Dissipation (Max)	300	W (Tc)
Operating Temperature Range	-55 to 150	°C (TJ)
Mounting Type	Through Hole	—
Package / Case	TO-247-3	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution logic for the IXFH24N50 is based on the following critical parameters:

Primary Matching Criteria:

Drain to Source Voltage (Vdss): 500V or higher
Continuous Drain Current (Id): 20A or higher at 25°C
Package Type: TO-247-3 or compatible through-hole package
FET Type: N-Channel MOSFET
Operating Temperature Range: -55°C to 150°C or equivalent

Secondary Compatibility Factors:

Rds On (Max): Values within acceptable range for application requirements
Gate Charge (Qg): Lower values preferred for faster switching
Power Dissipation: Minimum 250W to maintain thermal headroom
RoHS3 Compliance: Required for regulatory alignment

Substitute parts are grouped into three categories based on how closely they align with the IXFH24N50 specifications:

Category A - Direct Substitutes (Vdss 500V, Id 20-24A): Parts with matching voltage rating and current rating within ±4A, maintaining similar thermal and electrical characteristics.

Category B - Functional Equivalents (Vdss 500V, Id 17-30A): Parts with matching voltage rating but current ratings outside the ±4A window, suitable for applications with flexible current requirements.

Category C - Higher Voltage Alternatives (Vdss 550-600V): Parts with elevated voltage ratings, applicable when over-voltage margin is required or when primary voltage-rated parts are unavailable.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On Max (mOhm)	Qg Max (nC)	Pd Max (W)	Package	Product Status
IXFH24N50	IXYS	500	24	230 @ 12A, 10V	160 @ 10V	300	TO-247-3	Active
IRFP23N50LPBF	Vishay Siliconix	500	23	235 @ 14A, 10V	150 @ 10V	370	TO-247-3	Active
IRFP460PBF	Vishay Siliconix	500	20	270 @ 12A, 10V	210 @ 10V	280	TO-247-3	Active
IRFP460APBF	Vishay Siliconix	500	20	270 @ 12A, 10V	105 @ 10V	280	TO-247-3	Active
IRFP460LCPBF	Vishay Siliconix	500	20	270 @ 12A, 10V	120 @ 10V	280	TO-247-3	Active
SIHG20N50C-E3	Vishay Siliconix	500	20	270 @ 10A, 10V	76 @ 10V	250	TO-247-3	Active
STW19NM50N	STMicroelectronics	500	14	250 @ 7A, 10V	34 @ 10V	110	TO-247-3	Active
STW20NK50Z	STMicroelectronics	500	17	270 @ 8.5A, 10V	119 @ 10V	190	TO-247-3	Active
STW26NM50	STMicroelectronics	500	30	120 @ 13A, 10V	106 @ 10V	313	TO-247-3	Not For New Designs
IPW50R140CPFKSA1	Infineon Technologies	550	23	140 @ 14A, 10V	64 @ 10V	192	TO-247-3	Last Time Buy
STW26NM60N	STMicroelectronics	600	20	165 @ 10A, 10V	60 @ 10V	140	TO-247-3	Active

Engineering Selection Recommendations

Category A - Direct Substitutes (Recommended for Primary Replacement)

IRFP23N50LPBF (Vishay Siliconix) is the closest functional equivalent to the IXFH24N50. It matches the 500V voltage rating and provides 23A continuous drain current, within 1A of the primary part. The device offers superior power dissipation capability (370W vs. 300W) and maintains RoHS3 compliance. Product status is Active with 15,301 units in stock. This part is suitable for direct substitution in applications where the 1A current reduction is acceptable.

IRFP460PBF (Vishay Siliconix) provides 500V rating with 20A continuous drain current. With 31,634 units in stock and Active product status, this part offers the highest availability among substitutes. The 4A current reduction from the primary part requires application-level verification but is acceptable for many switching applications. RoHS3 compliance is confirmed.

IRFP460APBF (Vishay Siliconix) and IRFP460LCPBF (Vishay Siliconix) are variants of the IRFP460 series with identical electrical ratings to IRFP460PBF but with different gate charge specifications (105 nC and 120 nC respectively vs. 210 nC). These variants offer improved switching performance and are suitable when faster gate response is required. Both maintain Active product status and RoHS3 compliance.

SIHG20N50C-E3 (Vishay Siliconix) provides 500V rating with 20A continuous drain current and the lowest gate charge (76 nC) among 500V substitutes. This part is optimized for high-frequency switching applications. With 23,400 units in stock and Active status, it represents a viable alternative when switching losses must be minimized. RoHS3 compliance is confirmed.

Category B - Functional Equivalents (Conditional Substitution)

STW20NK50Z (STMicroelectronics) provides 500V rating with 17A continuous drain current. The 7A reduction from the primary part limits its use to applications with lower current requirements. However, the part offers good availability (7,794 units) and Active product status. RoHS3 compliance is confirmed.

STW19NM50N (STMicroelectronics) provides 500V rating with 14A continuous drain current and the lowest gate charge (34 nC) among all 500V options. This part is suitable only for applications requiring significantly lower current. With 2,443 units in stock and Active status, it is available for specialized low-current switching applications. RoHS3 compliance is confirmed.

STW26NM50 (STMicroelectronics) provides 500V rating with 30A continuous drain current, exceeding the primary part by 6A. This part offers superior current handling and lower on-resistance (120 mOhm vs. 230 mOhm). However, product status is "Not For New Designs," limiting its use to legacy system maintenance or when no other alternatives are available. RoHS3 compliance is confirmed.

Category C - Higher Voltage Alternatives (Over-Voltage Applications)

IPW50R140CPFKSA1 (Infineon Technologies) provides 550V rating with 23A continuous drain current. The elevated voltage rating provides additional margin for transient over-voltage conditions. However, product status is "Last Time Buy," indicating limited future availability. Power dissipation is reduced to 192W, which may require thermal design review. RoHS3 compliance is confirmed.

STW26NM60N (STMicroelectronics) provides 600V rating with 20A continuous drain current. This part is suitable for applications requiring maximum voltage margin. Product status is Active with 65,100 units in stock, ensuring long-term availability. However, power dissipation is reduced to 140W, requiring thermal design verification. RoHS3 compliance is confirmed.

Compliance and Regulatory Status

All recommended substitutes maintain RoHS3 compliance and REACH Unaffected or REACH Affected status consistent with the primary part. ECCN classification (EAR99) and HTSUS code (8541.29.0095) are uniform across all parts, confirming regulatory alignment for export and tariff purposes.

Frequently Asked Questions (FAQ)

Q1: Can IRFP23N50LPBF be used as a direct replacement for IXFH24N50?

A: Yes. IRFP23N50LPBF is a direct substitute with matching 500V voltage rating and 23A continuous drain current (1A less than the primary part). Both devices are housed in TO-247-3 packages and operate across the same temperature range (-55°C to 150°C). The 1A current difference is within acceptable tolerance for most applications. Verify that your circuit design does not depend on the full 24A rating.

Q2: What is the difference between IRFP460PBF, IRFP460APBF, and IRFP460LCPBF?

A: All three parts share identical electrical ratings: 500V, 20A continuous drain current, and TO-247-3 package. The primary difference is gate charge (Qg): IRFP460PBF has 210 nC, IRFP460APBF has 105 nC, and IRFP460LCPBF has 120 nC. Lower gate charge enables faster switching and reduced switching losses. Select IRFP460APBF or IRFP460LCPBF for high-frequency applications where switching speed is critical.

Q3: Why is STW26NM50 marked "Not For New Designs"?

A: STW26NM50 carries a "Not For New Designs" status, indicating that the manufacturer has discontinued active development and is limiting production to existing customer commitments. This part should be used only for legacy system maintenance or when no other alternatives meet application requirements. For new designs, select from parts with Active product status.

Q4: Can I use IPW50R140CPFKSA1 or STW26NM60N in place of IXFH24N50?

A: These parts have higher voltage ratings (550V and 600V respectively) and can be used in applications where the primary part is unavailable. However, both have reduced power dissipation ratings (192W and 140W vs. 300W), requiring thermal design review. Additionally, IPW50R140CPFKSA1 is in "Last Time Buy" status with limited future availability. Use these parts only when lower-voltage alternatives are exhausted.

Q5: What does "Last Time Buy" status mean for IPW50R140CPFKSA1?

A: "Last Time Buy" indicates that Infineon Technologies has announced end-of-life for this part. The manufacturer will fulfill existing orders but will not continue production beyond a specified date. Current inventory (1,083 units) represents the final available stock. Plan for transition to alternative parts before the Last Time Buy deadline.

Q6: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this reference maintain RoHS3 compliance, matching the regulatory status of the primary IXFH24N50. This ensures compatibility with procurement requirements and environmental regulations across all markets.

Q7: Which substitute offers the lowest gate charge for high-frequency applications?

A: STW19NM50N offers the lowest gate charge at 34 nC @ 10V, followed by SIHG20N50C-E3 at 76 nC @ 10V. However, STW19NM50N is rated for only 14A continuous drain current, limiting its use to low-current applications. SIHG20N50C-E3 provides a better balance with 20A current rating and 76 nC gate charge, making it the preferred choice for high-frequency switching with moderate current requirements.

Q8: What is the difference between TO-247AD and TO-247AC packages?

A: Both TO-247AD and TO-247AC are through-hole packages with three leads (drain, gate, source) and are mechanically compatible in most applications. The primary difference is internal lead frame geometry and thermal characteristics. Verify PCB footprint compatibility before substituting between these package variants. All parts in this reference use TO-247-3 designation, confirming mechanical compatibility.

Q9: Which substitute has the lowest on-resistance (Rds On)?

A: STW26NM50 offers the lowest on-resistance at 120 mOhm @ 13A, 10V. However, this part is marked "Not For New Designs." Among Active-status parts, STW26NM60N provides 165 mOhm @ 10A, 10V. For applications prioritizing low conduction losses, these parts are preferred, but thermal design must account for their reduced power dissipation ratings.

Q10: Can I use a 20A-rated part in an application designed for 24A?

A: This depends on application duty cycle and thermal design. If the application operates continuously at 24A, a 20A-rated substitute will exceed its current rating and may cause premature failure. If the application operates at average currents below 20A with peak excursions to 24A, a 20A-rated part may be acceptable if thermal analysis confirms safe junction temperature. Consult application-specific requirements before substitution.

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