AOB296L N-Channel MOSFET 100V 9.5A Equivalent & Substitute Parts

Part Overview

The AOB296L is an N-Channel MOSFET manufactured by Alpha & Omega Semiconductor Inc., rated for 100V drain-to-source voltage with 9.5A continuous drain current at 25°C (Ta) and 70A at case temperature (Tc). The device is housed in a TO-263 (D2PAK) surface mount package and is classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary to maintain design continuity and ensure long-term component availability for new production and field replacements.

Key Parameters

Parameter	AOB296L Value	Unit
FET Type	N-Channel	—
Drain-to-Source Voltage (Vdss)	100	V
Continuous Drain Current @ 25°C (Ta)	9.5	A
Continuous Drain Current @ Case (Tc)	70	A
Rds(on) Max @ 20A, 10V	9.7	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	3.4	V
Gate Charge (Qg) @ 10V	52	nC
Input Capacitance (Ciss) @ 50V	2785	pF
Power Dissipation (Tc)	107	W
Operating Temperature Range	−55 to 175	°C
Mounting Type	Surface Mount	—
Package	TO-263 (D2PAK)	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the AOB296L is determined by the following critical parameters:

Electrical Compatibility Requirements:

Drain-to-Source Voltage (Vdss) must be ≥100V to maintain voltage margin
Continuous drain current (Tc) must be ≥70A to support thermal case rating
Rds(on) must be ≤10mOhm to ensure comparable on-state performance
Gate threshold voltage must be within acceptable switching range
Operating temperature range must span −55°C to 175°C

Mechanical Compatibility Requirements:

Package must be TO-263 (D2PAK) or compatible variant (TO-263-3, TO-263AA, TO-263-7)
Surface mount mounting type
Pin configuration must support direct PCB layout compatibility

Compliance Requirements:

RoHS3 compliance mandatory
REACH unaffected status required

Substitute parts are grouped into two categories: direct equivalents (matching all electrical and mechanical parameters) and functional substitutes (meeting or exceeding electrical specifications with compatible packaging).

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ Tc (A)	Rds(on) Max (mOhm)	Vgs(th) (V)	Qg @ 10V (nC)	Ciss @ 50V (pF)	Power Diss. Tc (W)	Package	Status
AOB296L	Alpha & Omega	100	70	9.7	3.4	52	2785	107	TO-263	Obsolete
BUK9611-80E,118	Nexperia	80	75	10	2.1	48.8	7149	182	D2PAK	Active
FDB3632	onsemi	100	80	9	4	110	6000	310	TO-263	Active
IPB083N10N3GATMA1	Infineon	100	80	8.3	3.5	55	3980	125	PG-TO263-3	Active
IRFS4410ZTRLPBF	Infineon	100	97	9	4	120	4820	230	PG-TO263-3	Active
IXFA130N10T	IXYS	100	130	9.1	4.5	104	5080	360	TO-263AA	Active
IXFA130N10T2	IXYS	100	130	9.1	4.5	130	6600	360	TO-263AA	Active
IXTA130N10T	IXYS	100	130	9.1	4.5	104	5080	360	TO-263AA	Active
IXTA130N10T-TRL	IXYS	100	130	9.1	4.5	104	5080	360	TO-263AA	Active
IXTA130N10T7	IXYS	100	130	9.1	4.5	104	5080	360	TO-263-7	Active

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

The IXFA130N10T, IXFA130N10T2, IXTA130N10T, IXTA130N10T-TRL, and IXTA130N10T7 from IXYS provide the closest electrical match to the AOB296L. All devices maintain 100V Vdss rating, exceed the 70A continuous drain current requirement with 130A capability, and deliver comparable Rds(on) performance at 9.1mOhm. These parts are active products with full RoHS3 compliance and REACH unaffected status. The TO-263AA and TO-263-7 package variants are mechanically compatible with standard TO-263 PCB layouts.

Secondary Substitutes (Voltage and Current Match):

The FDB3632 (onsemi) and IPB083N10N3GATMA1 (Infineon) both match the 100V Vdss specification and exceed the 70A continuous drain current requirement with 80A capability. Both are active products with RoHS3 compliance. The FDB3632 offers higher power dissipation capability (310W vs. 107W), while the IPB083N10N3GATMA1 provides lower Rds(on) at 8.3mOhm. Both use TO-263 compatible packaging.

Alternative Substitute (Lower Voltage Rating):

The BUK9611-80E,118 (Nexperia) operates at 80V Vdss, which is 20V below the AOB296L specification. This part is suitable only for applications where the actual operating voltage does not exceed 80V. The device exceeds current requirements at 75A and provides superior power dissipation at 182W. It is an active product with AEC-Q101 automotive qualification and RoHS3 compliance.

Selection Criteria:

Choose substitutes based on actual circuit voltage and current requirements. For designs operating at or near 100V, select from the IXYS 100V family or the FDB3632/IPB083N10N3GATMA1 options. For applications with confirmed maximum operating voltage below 80V, the BUK9611-80E,118 is acceptable. All recommended substitutes are active products with current manufacturing support and full compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can the BUK9611-80E,118 be used as a direct replacement for the AOB296L?

A: The BUK9611-80E,118 has an 80V Vdss rating compared to the AOB296L's 100V rating. It is suitable only if the circuit's maximum operating voltage does not exceed 80V. For circuits designed for 100V operation, use a 100V-rated substitute such as the FDB3632, IPB083N10N3GATMA1, or IXYS 100V family devices.

Q: Are the IXYS TO-263AA and TO-263-7 packages compatible with standard TO-263 PCB layouts?

A: The TO-263AA and TO-263-7 variants are mechanically compatible with standard TO-263 (D2PAK) PCB footprints. Both use the same three-lead configuration (2 leads + tab) and pin spacing. Verify PCB artwork supports the specific package variant before assembly.

Q: What is the difference between IXTA130N10T and IXTA130N10T-TRL?

A: Both parts are electrically identical with 100V Vdss and 130A continuous drain current. The primary difference is packaging: IXTA130N10T is supplied in Tube, while IXTA130N10T-TRL is supplied in Tape & Reel (TR). The IXTA130N10T-TRL has MSL-3 moisture sensitivity (168 hours), while the tube version has MSL-1 (unlimited). Select based on your assembly process and moisture control capabilities.

Q: Does the higher gate charge (Qg) of the FDB3632 (110 nC) affect switching performance compared to the AOB296L (52 nC)?

A: Higher gate charge requires more drive current from the gate driver circuit and increases switching transition time. The FDB3632's 110 nC gate charge is approximately double the AOB296L's 52 nC. Verify that your gate driver circuit can supply sufficient current to meet switching frequency requirements. The IXYS devices (104 nC) and IPB083N10N3GATMA1 (55 nC) offer lower gate charge alternatives.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed are RoHS3 compliant and REACH unaffected. The AOB296L is also RoHS3 compliant, ensuring regulatory consistency across all options.

Q: What is the significance of the IXTA130N10T7 TO-263-7 package variant?

A: The TO-263-7 package includes six leads plus tab (compared to standard TO-263-3 with two leads plus tab). This variant provides additional thermal and electrical connection points. It is mechanically compatible with standard TO-263 layouts but offers enhanced thermal performance. Verify PCB artwork supports the six-lead configuration before selection.

Q: Can I use the IRFS4410ZTRLPBF as a substitute?

A: The IRFS4410ZTRLPBF meets the 100V Vdss and exceeds current requirements at 97A continuous drain current. It is an active product with RoHS3 compliance. However, it is not listed as a primary substitute in this reference. Verify compatibility with your specific application requirements and gate driver circuit before selection.

Q: What is the impact of lower Rds(on) in the IPB083N10N3GATMA1 (8.3 mOhm) versus the AOB296L (9.7 mOhm)?

A: Lower Rds(on) reduces on-state power dissipation and heat generation. The IPB083N10N3GATMA1's 8.3 mOhm provides approximately 14% lower conduction losses compared to the AOB296L's 9.7 mOhm. This results in improved thermal performance and potentially allows operation at higher current levels within the same thermal budget.

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