AUIRFS4310 N-Channel 100V 75A MOSFET Equivalent & Substitute Parts

Part Overview

The AUIRFS4310 is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 100V drain-to-source voltage and 75A continuous drain current in the D2PAK surface mount package. This device is classified as obsolete product status. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades. Substitute parts must maintain electrical compatibility across voltage ratings, current handling, thermal characteristics, and mechanical packaging standards.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	100	V
Continuous Drain Current @ 25°C (Id)	75	A (Tc)
On-Resistance @ 75A, 10V (Rds On Max)	7	mOhm
Gate Threshold Voltage @ 250µA (Vgs(th) Max)	4	V
Gate Charge @ 10V (Qg Max)	250	nC
Maximum Gate Voltage (Vgs Max)	±20	V
Power Dissipation (Max)	300	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	D2PAK (TO-263-3)	Surface Mount
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the AUIRFS4310 is determined by the following critical parameters:

Voltage Rating Compatibility: All substitute parts must maintain a Vdss rating of 100V. This ensures the device operates within the same voltage class and maintains system safety margins.

Current Handling Capacity: Substitute parts must support continuous drain current (Id) at or above 75A (Tc). Parts with higher current ratings provide design margin and thermal headroom.

On-Resistance (Rds On): The maximum on-resistance specification at rated conditions must not exceed the original 7 mOhm @ 75A, 10V to maintain equivalent power dissipation and thermal performance.

Gate Threshold Voltage: Vgs(th) must remain within ±20V maximum gate voltage specification to ensure compatible gate drive circuits.

Package Compatibility: All substitutes must use D2PAK (TO-263-3) or equivalent surface mount packages to maintain PCB layout compatibility.

Thermal and Compliance: Operating temperature range (-55°C to 175°C), RoHS3 compliance, and MSL rating must be maintained.

The following substitute parts meet these criteria and are grouped by current rating and on-resistance characteristics.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On Max (mOhm)	Vgs(th) Max (V)	Qg Max (nC)	Power Diss. (W)	Package	Status
AUIRFS4310	Infineon	100	75 (Tc)	7 @ 75A, 10V	4	250 @ 10V	300 (Tc)	D2PAK	Obsolete
PSMN009-100B,118	Nexperia	100	75 (Tc)	8.8 @ 25A, 10V	4	156 @ 10V	230 (Tc)	D2PAK	Active
PSMN7R0-100BS,118	Nexperia	100	100 (Tc)	6.8 @ 15A, 10V	4	125 @ 10V	269 (Tc)	D2PAK	Active
STB100N10F7	STMicroelectronics	100	80 (Tc)	8 @ 40A, 10V	4.5	61 @ 10V	150 (Tc)	D2PAK	Active
AOB410L	Alpha & Omega	100	150 (Tc)	6.5 @ 20A, 10V	4	129 @ 10V	333 (Tc)	TO-263	Active
IXTA160N10T	IXYS	100	160 (Tc)	7 @ 25A, 10V	4.5	132 @ 10V	430 (Tc)	TO-263AA	Active
IXTA180N10T7	IXYS	100	180 (Tc)	6.4 @ 25A, 10V	4.5	151 @ 10V	480 (Tc)	TO-263-7	Active
IXFA180N10T2	IXYS	100	180 (Tc)	6 @ 50A, 10V	4	185 @ 10V	480 (Tc)	TO-263AA	Active

Engineering Selection Recommendations

Direct Replacement (Same Current Rating):

PSMN009-100B,118 (Nexperia) provides the closest electrical match to the AUIRFS4310 with identical 75A continuous drain current and 100V Vdss rating. Both devices use D2PAK packaging. The PSMN009-100B,118 is active product status with ROHS3 compliance and MSL 1 rating, ensuring long-term availability and supply chain stability.

Higher Current Capacity Substitutes:

PSMN7R0-100BS,118 (Nexperia) offers 100A continuous drain current with improved on-resistance characteristics (6.8 mOhm @ 15A, 10V) and maintains D2PAK packaging. This part provides additional thermal margin and is suitable for applications requiring higher current headroom.

IXTA160N10T and IXTA180N10T7 (IXYS) provide 160A and 180A continuous drain current respectively, with on-resistance values of 7 mOhm and 6.4 mOhm. These parts use TO-263AA and TO-263-7 packages, which are mechanically compatible with D2PAK footprints. Both are active product status with full compliance certifications.

IXFA180N10T2 (IXYS) delivers 180A continuous drain current with the lowest on-resistance (6 mOhm @ 50A, 10V) and highest power dissipation rating (480W). This part is suitable for high-performance applications requiring minimal conduction losses.

AOB410L (Alpha & Omega) offers 150A continuous drain current with 333W power dissipation and is active product status. The device uses TO-263 (D2PAK) packaging.

Lower Current Capacity Consideration:

STB100N10F7 (STMicroelectronics) provides 80A continuous drain current, slightly above the original 75A specification. This part is suitable for applications where current margin is not critical. Gate charge is significantly lower (61 nC), which may reduce switching losses in high-frequency applications.

All recommended substitutes maintain 100V Vdss rating, -55°C to 175°C operating temperature range, ROHS3 compliance, and MSL 1 moisture sensitivity level.

Frequently Asked Questions (FAQ)

Q: Can PSMN009-100B,118 directly replace AUIRFS4310 without PCB modifications?

A: Yes. PSMN009-100B,118 uses D2PAK packaging identical to AUIRFS4310 and maintains the same 75A continuous drain current, 100V voltage rating, and gate threshold voltage. No PCB layout changes are required.

Q: What is the advantage of selecting a higher current-rated substitute like IXTA180N10T7?

A: Higher current-rated devices provide thermal margin and reduce on-resistance losses. IXTA180N10T7 offers 180A capacity versus the original 75A, allowing the device to operate at lower junction temperatures under the same load current. This extends device lifetime and improves reliability.

Q: Are TO-263AA and TO-263-7 packages mechanically compatible with D2PAK footprints?

A: TO-263AA and TO-263-7 are mechanical variants of the D2PAK family. TO-263AA uses 3 leads (2 leads + tab), identical to D2PAK. TO-263-7 uses 6 leads + tab. Verify PCB footprint compatibility before selection. Standard D2PAK footprints accommodate TO-263AA directly; TO-263-7 requires a different footprint.

Q: Why does STB100N10F7 have lower gate charge than AUIRFS4310?

A: Gate charge (Qg) varies with device design and die size. STB100N10F7 has 61 nC versus AUIRFS4310's 250 nC. Lower gate charge reduces gate drive power requirements and switching losses, beneficial in high-frequency switching applications. Verify gate drive circuit compatibility before substitution.

Q: What is the significance of on-resistance (Rds On) differences between substitutes?

A: On-resistance directly affects conduction losses and heat dissipation. Lower Rds On values reduce power loss. IXFA180N10T2 (6 mOhm) dissipates less heat than AUIRFS4310 (7 mOhm) at the same current. In thermal-limited applications, lower Rds On substitutes improve performance and reliability.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All recommended substitute parts listed are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for new product designs and manufacturing.

Q: Can I use AOB410L in a design originally specified for AUIRFS4310?

A: AOB410L is electrically compatible with 100V Vdss, 150A continuous drain current, and D2PAK packaging. However, verify gate drive circuit compatibility due to different Vgs(th) specifications (4V for AOB410L versus 4V for AUIRFS4310). The higher current rating provides design margin.

Q: What packaging consideration applies to IXTA180N10T7 versus other substitutes?

A: IXTA180N10T7 uses TO-263-7 package with 6 leads + tab, differing from standard D2PAK (2 leads + tab). This requires a different PCB footprint. Verify footprint compatibility in your design before selection. Other IXYS parts (IXTA160N10T, IXFA180N10T2) use TO-263AA, which is mechanically compatible with D2PAK.

Q: Which substitute offers the best thermal performance for high-power applications?

A: IXFA180N10T2 provides the highest power dissipation rating (480W) combined with the lowest on-resistance (6 mOhm @ 50A, 10V). This combination minimizes conduction losses and junction temperature rise, making it optimal for continuous high-current operation.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message