STP110N8F7 Equivalent & Substitute Parts

Part Overview

The STP110N8F7 is an N-Channel MOSFET manufactured by STMicroelectronics, rated for 80V drain-to-source voltage and 80A continuous drain current in a Through Hole TO-220 package. This device is part of the STripFET™ series and is classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility within the specified parameter ranges while accommodating packaging and thermal performance variations.

Key Parameters

Parameter	Value	Unit
FET Type	N-Channel	—
Drain to Source Voltage (Vdss)	80	V
Continuous Drain Current (Id) @ 25°C	80	A (Tc)
On-State Resistance (Rds On) @ 40A, 10V	7.5	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	4.5	V
Power Dissipation (Max)	170	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Mounting Type	Through Hole	—
Package	TO-220-3	—

Substitute Part Grouping Explanation

Substitution of the STP110N8F7 is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

Drain-to-Source Voltage (Vdss) must be equal to or greater than 80V
Continuous Drain Current (Id) must be equal to or greater than 80A at 25°C
Gate Threshold Voltage (Vgs(th)) must be compatible with 10V drive voltage
On-State Resistance (Rds On) must not significantly exceed the original specification to maintain thermal performance
Operating temperature range must encompass -55°C to 175°C

Mechanical Compatibility Criteria:

Mounting type must be Through Hole for direct board-level replacement
Package must be TO-220-3 for pin-compatible substitution
Surface Mount alternatives (TO-263) are listed for reference but require circuit board redesign

Substitute parts are grouped into two categories: direct pin-compatible replacements (Through Hole TO-220) and functional equivalents with different packaging (Surface Mount TO-263).

Parameter Comparison

Parameter	STP110N8F7	STP140N8F7	AOT286L	FDP054N10	IXFP180N10T2
Manufacturer	STMicroelectronics	STMicroelectronics	Alpha & Omega Semiconductor	onsemi	IXYS
Vdss (V)	80	80	80	100	100
Id @ 25°C (A)	80	90	70 (Tc)	120	180
Rds On @ 10V (mOhm)	7.5 @ 40A	4.3 @ 45A	6.0 @ 20A	5.5 @ 75A	6.0 @ 50A
Vgs(th) @ 250µA (V)	4.5	4.5	3.3	4.5	4.0
Power Dissipation (W)	170	200	167 (Tc)	263	480
Operating Temperature (°C)	-55 to 175	-55 to 175	-55 to 175	-55 to 175	-55 to 175
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package	TO-220-3	TO-220-3	TO-220-3	TO-220-3	TO-220-3
Product Status	Obsolete	Active	Active	Active	Active
RoHS Compliance	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3

Engineering Selection Recommendations

Primary Recommendation: STP140N8F7

The STP140N8F7 is the manufacturer-recommended substitute for the STP110N8F7. Both devices are manufactured by STMicroelectronics and share identical voltage ratings (80V Vdss) and compatible gate threshold characteristics (4.5V Vgs(th)). The STP140N8F7 provides enhanced performance with 90A continuous drain current versus 80A, improved on-state resistance (4.3 mOhm versus 7.5 mOhm), and increased power dissipation capability (200W versus 170W). The device maintains Through Hole TO-220-3 packaging for direct board-level substitution. Product status is Active with full ROHS3 compliance and unlimited moisture sensitivity rating.

Secondary Recommendation: AOT286L

The AOT286L from Alpha & Omega Semiconductor is an active product offering Through Hole TO-220 packaging identical to the original device. It maintains 80V Vdss compatibility and provides 70A continuous drain current (Tc), which approaches the original 80A specification. On-state resistance is 6.0 mOhm at 20A, 10V. Gate threshold voltage is 3.3V, which is lower than the original 4.5V and requires verification for gate drive circuit compatibility. Power dissipation is rated at 167W (Tc), slightly below the original 170W. This device is suitable for applications where the lower gate threshold voltage is acceptable.

Alternative Consideration: FDP054N10

The FDP054N10 from onsemi is an active product with enhanced electrical specifications. It provides 100V Vdss (higher than the original 80V), 120A continuous drain current, and 263W power dissipation. On-state resistance is 5.5 mOhm at 75A, 10V. This device is suitable for applications requiring higher voltage margin or increased current capacity. Through Hole TO-220-3 packaging enables direct substitution. Gate threshold voltage is 4.5V, matching the original specification.

Higher Performance Alternative: IXFP180N10T2

The IXFP180N10T2 from IXYS is an active product rated for 100V Vdss and 180A continuous drain current with 480W power dissipation. This device provides significant performance headroom for demanding applications. On-state resistance is 6.0 mOhm at 50A, 10V. Gate threshold voltage is 4.0V, compatible with standard 10V drive circuits. Through Hole TO-220-3 packaging enables direct substitution. This device is recommended for applications requiring maximum current capacity and thermal performance.

All recommended substitutes maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Operating temperature range is consistent across all alternatives (-55°C to 175°C).

Frequently Asked Questions (FAQ)

Q: Can the STP140N8F7 be used as a direct replacement for the STP110N8F7?

A: Yes. The STP140N8F7 is the manufacturer-recommended substitute. Both devices share identical 80V Vdss rating, compatible 4.5V gate threshold voltage, and identical Through Hole TO-220-3 packaging. The STP140N8F7 provides improved performance characteristics with higher current rating (90A versus 80A) and lower on-state resistance (4.3 mOhm versus 7.5 mOhm).

Q: What is the difference between the AOT286L and AOB286L?

A: The AOT286L is a Through Hole TO-220 package device, while the AOB286L is a Surface Mount TO-263 (D2PAK) package device. Both are manufactured by Alpha & Omega Semiconductor with identical electrical specifications. The AOT286L is suitable for direct board-level replacement of the STP110N8F7. The AOB286L requires circuit board redesign to accommodate surface mount packaging.

Q: Are there voltage rating differences between substitute parts?

A: Yes. The STP110N8F7 and STP140N8F7 are rated for 80V Vdss. The FDP054N10 and IXFP180N10T2 are rated for 100V Vdss. Higher voltage ratings provide additional safety margin in applications with voltage transients but do not prevent use in 80V applications. Devices with higher voltage ratings typically exhibit higher on-state resistance at equivalent current levels.

Q: What is the significance of gate threshold voltage differences?

A: Gate threshold voltage (Vgs(th)) determines the minimum gate-to-source voltage required to turn the device on. The STP110N8F7 specifies 4.5V at 250µA. The AOT286L specifies 3.3V, and the IXFP180N10T2 specifies 4.0V. Lower threshold voltages enable operation with lower gate drive voltages. Substitutes with significantly different threshold voltages require verification that existing gate drive circuits provide adequate voltage margin for reliable switching.

Q: How do on-state resistance differences affect thermal performance?

A: On-state resistance (Rds On) directly determines power dissipation during conduction: P = I²R. Lower on-state resistance reduces heat generation. The STP110N8F7 specifies 7.5 mOhm at 40A, 10V. The STP140N8F7 specifies 4.3 mOhm at 45A, 10V, resulting in lower power dissipation and improved thermal performance. Substitutes with higher on-state resistance generate more heat and may require enhanced thermal management.

Q: Can Surface Mount alternatives (AOB286L) be used in Through Hole applications?

A: No. Surface Mount TO-263 (D2PAK) packages require different circuit board layouts and soldering processes than Through Hole TO-220 packages. Direct substitution is not possible without circuit board redesign. Surface Mount alternatives are listed for reference in applications where board redesign is feasible.

Q: What compliance certifications are maintained across all substitute parts?

A: All substitute parts maintain ROHS3 compliance and REACH Unaffected status. Moisture Sensitivity Level (MSL) is rated as 1 (Unlimited) for all devices except FDP054N10, which is rated as Not Applicable. All devices are classified under ECCN EAR99 and HTSUS 8541.29.0095.

Q: Which substitute part provides the best thermal performance?

A: The IXFP180N10T2 provides the highest power dissipation rating at 480W (Tc), followed by the FDP054N10 at 263W (Tc). Both devices offer superior thermal performance compared to the original STP110N8F7 at 170W (Tc). Selection depends on application current requirements and thermal management capabilities.

Q: Are all substitute parts currently in production?

A: Yes. All recommended substitute parts have Active product status. The STP110N8F7 is classified as Obsolete. Active status ensures ongoing availability and manufacturing support for new designs and production requirements.

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