IXFC14N80P N-Channel 800V 8A MOSFET Equivalent & Substitute Parts

Part Overview

The IXFC14N80P is an N-Channel 800V 8A MOSFET manufactured by IXYS in the HiPerFET™ and PolarHT™ series. This device is rated for 130W power dissipation and features the ISOPLUS220™ through-hole package. The part is currently obsolete, making identification of functionally equivalent substitutes necessary for ongoing system support and new design alternatives.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	800	V
Continuous Drain Current (Id) @ 25°C	8	A
On-State Resistance (Rds On) @ 7A, 10V	770	mOhm
Gate Threshold Voltage (Vgs(th)) @ 4mA	5.5	V
Gate Charge (Qg) @ 10V	61	nC
Power Dissipation (Max)	130	W
Operating Temperature Range	-55 to 150	°C
Package Type	ISOPLUS220™	Through Hole

Substitute Part Grouping Explanation

Substitution of the IXFC14N80P is determined by the following critical parameters:

Mandatory Matching Criteria:

Drain to Source Voltage (Vdss): 800V
Continuous Drain Current (Id): 8A minimum
FET Type: N-Channel
Technology: MOSFET (Metal Oxide)
Operating Temperature Range: -55°C to 150°C

Secondary Compatibility Factors:

On-State Resistance (Rds On): Lower or equivalent values indicate improved performance
Gate Charge (Qg): Lower values reduce switching losses
Power Dissipation capability: Determines thermal management requirements
Package Type: Through-hole mounting required; specific package variants affect PCB layout compatibility

The substitute parts listed below meet the mandatory voltage and current specifications. Package differences (TO-220F, TO-220FP, TO-220AB versus ISOPLUS220™) require mechanical and thermal evaluation during integration.

Parameter Comparison

Parameter	IXFC14N80P	FCPF650N80Z	FCPF850N80Z	SPA06N80C3XKSA1	SPA08N80C3XKSA1	STF12NK80Z	STP10NK80Z
Manufacturer	IXYS	onsemi	onsemi	Infineon	Infineon	STMicroelectronics	STMicroelectronics
Vdss (V)	800	800	800	800	800	800	800
Id @ 25°C (A)	8	8	6	6	8	10.5	9
Rds On (mOhm)	770	650	850	900	650	750	900
Vgs(th) (V)	5.5	4.5	4.5	3.9	3.9	4.5	4.5
Qg @ 10V (nC)	61	35	29	41	60	87	72
Power Dissipation (W)	130	30.5	28.4	39	40	40	190
Operating Temp (°C)	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150
Package	ISOPLUS220™	TO-220F-3	TO-220F-3	PG-TO220-3-31	PG-TO220-3-31	TO-220FP	TO-220
Product Status	Obsolete	Not For New Designs	Not For New Designs	Active	Active	Active	Active
RoHS Status	Not Specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Highest Compatibility):

SPA08N80C3XKSA1 (Infineon CoolMOS™) provides the closest electrical match to the IXFC14N80P with 8A continuous drain current and 800V Vdss rating. This part is Active status and ROHS3 compliant. Package transition from ISOPLUS220™ to PG-TO220-3-31 requires mechanical verification but maintains through-hole mounting compatibility.

For Current-Matched Alternatives:

FCPF650N80Z (onsemi SuperFET® II) matches the 8A rating with superior on-state resistance (650mOhm versus 770mOhm). However, this part carries Not For New Designs status. ROHS3 compliance is confirmed.

For Higher Current Capability:

STF12NK80Z (STMicroelectronics SuperMESH™) and STP10NK80Z (STMicroelectronics SuperMESH™) provide 10.5A and 9A ratings respectively, exceeding the original 8A specification. Both are Active status with ROHS3 compliance. STP10NK80Z offers significantly higher power dissipation (190W) compared to the original 130W rating.

For Lower Current Applications:

SPA06N80C3XKSA1 and FCPF850N80Z are rated for 6A continuous drain current. These parts are suitable only if system design permits reduced current capacity. Both maintain 800V Vdss and Active or Not For New Designs status respectively.

Compliance Considerations:

All substitute parts listed are REACH Unaffected and carry EAR99 ECCN classification, matching the original part's regulatory status. ROHS3 compliance is confirmed for all active and not-for-new-designs parts. Moisture Sensitivity Level (MSL) varies; Infineon and STMicroelectronics parts specify MSL 1 (Unlimited).

Frequently Asked Questions (FAQ)

Q: Can FCPF650N80Z directly replace IXFC14N80P in existing designs?

A: FCPF650N80Z meets the 800V and 8A electrical requirements. However, it carries Not For New Designs status and uses TO-220F-3 package instead of ISOPLUS220™. PCB layout and thermal management must be re-evaluated due to package differences.

Q: What is the primary difference between SPA08N80C3XKSA1 and IXFC14N80P?

A: Both devices share 800V Vdss and 8A Id ratings. SPA08N80C3XKSA1 offers lower on-state resistance (650mOhm versus 770mOhm) and lower gate charge (60nC versus 61nC). The package differs (PG-TO220-3-31 versus ISOPLUS220™), requiring mechanical integration review. SPA08N80C3XKSA1 is Active status.

Q: Why does STP10NK80Z have 190W power dissipation while others have 30-40W?

A: STP10NK80Z uses TO-220 package without full pack thermal enhancement, resulting in higher thermal resistance. The 190W rating reflects this package characteristic. Other parts use TO-220F or TO-220FP variants with improved thermal performance.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed are ROHS3 compliant. The original IXFC14N80P does not specify RoHS status in the provided data.

Q: Which substitute part has the lowest gate charge?

A: FCPF850N80Z has the lowest gate charge at 29nC @ 10V, followed by FCPF650N80Z at 35nC. Lower gate charge reduces switching losses in high-frequency applications.

Q: Can I use STF12NK80Z or STP10NK80Z as direct substitutes despite higher current ratings?

A: Yes, higher current ratings are compatible with designs requiring 8A operation. STF12NK80Z (10.5A) and STP10NK80Z (9A) will operate safely at 8A continuous drain current. Verify thermal management is adequate for the specific application.

Q: What package considerations apply when switching from ISOPLUS220™ to TO-220 variants?

A: ISOPLUS220™ and TO-220 packages have different pin configurations and thermal characteristics. PCB footprint, lead spacing, and heatsink mounting must be re-designed. Consult package datasheets for mechanical dimensions and thermal interface specifications.

Q: Is SPA06N80C3XKSA1 suitable for 8A applications?

A: SPA06N80C3XKSA1 is rated for 6A continuous drain current. Use only if system design permits operation at or below 6A. Exceeding this rating voids thermal and electrical guarantees.

Q: Which substitute offers the best long-term availability?

A: SPA08N80C3XKSA1, STF12NK80Z, and STP10NK80Z carry Active product status, indicating ongoing manufacturing and support. FCPF650N80Z and FCPF850N80Z are Not For New Designs, indicating limited future availability.

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