AON7200 N-Channel MOSFET 30V 15.8A/40A Equivalent & Substitute Parts

Part Overview

The AON7200 is an N-Channel MOSFET manufactured by Alpha & Omega Semiconductor Inc., rated for 30V drain-to-source voltage with continuous drain current of 15.8A at Ta and 40A at Tc. The device is housed in an 8-DFN-EP (3x3) surface mount package 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 across voltage ratings, current handling, gate charge characteristics, and thermal performance parameters while accommodating package variations.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	30	V
Continuous Drain Current @ Ta	15.8	A
Continuous Drain Current @ Tc	40	A
RDS(on) Max @ 20A, 10V	8	mOhm
Gate Threshold Voltage @ 250µA	2.4	V
Gate Charge @ 10V	20	nC
Input Capacitance @ 15V	1300	pF
Power Dissipation @ Ta	3.1	W
Power Dissipation @ Tc	62	W
Operating Temperature Range	-55 to 150	°C
Package Type	8-DFN-EP (3x3)	Surface Mount

Substitute Part Grouping Explanation

Substitution of the AON7200 is determined by the following critical electrical and mechanical parameters:

Voltage Rating: All substitute parts must maintain the 30V Vdss specification to ensure safe operation in the same circuit topology.

Current Handling: Substitute parts must support continuous drain current at Ta of at least 15.8A to maintain equivalent thermal performance under standard operating conditions. Parts with higher Tc ratings provide enhanced thermal headroom.

On-Resistance (RDS(on)): The maximum on-resistance specification at 20A, 10V must not exceed 8mOhm to ensure comparable power dissipation and thermal characteristics.

Gate Charge (Qg): Gate charge at 10V must remain within acceptable limits (20nC nominal) to maintain switching speed and driver compatibility.

Input Capacitance (Ciss): Input capacitance at 15V should remain comparable to 1300pF to avoid significant changes in gate drive requirements.

Package Compatibility: While the AON7200 uses 8-DFN-EP (3x3), substitute parts may use alternative 8-pin surface mount packages (8-VSON, 8-WDFN, 8-TSDSON, PowerDI3333-8) provided they maintain compatible footprint dimensions and thermal performance.

Product Status: Active status substitutes are preferred for new designs; parts with "Not For New Designs" status are listed for reference only.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ Ta (A)	Id @ Tc (A)	RDS(on) Max (mOhm)	Vgs(th) (V)	Qg @ 10V (nC)	Ciss @ 15V (pF)	Pd @ Ta (W)	Pd @ Tc (W)	Package	Status
AON7200	Alpha & Omega	30	15.8	40	8.0	2.4	20	1300	3.1	62	8-DFN-EP (3x3)	Obsolete
AON7380	Alpha & Omega	30	—	24	6.8	2.2	25	825	4.1	24	8-DFN-EP (3x3)	Active
BSZ088N03LSGATMA1	Infineon	30	12	40	8.8	2.2	21	1700	2.1	35	PG-TSDSON-8	Not For New Designs
CSD17304Q3	Texas Instruments	30	15	56	7.5	1.8	6.6	955	2.7	—	8-VSON-CLIP (3.3x3.3)	Active
CSD17308Q3	Texas Instruments	30	14	44	10.3	1.8	5.1	700	2.7	—	8-VSON-CLIP (3.3x3.3)	Active
CSD17578Q3A	Texas Instruments	30	20	—	7.3	1.9	22.2	1590	3.2	37	8-VSONP (3x3.3)	Active
CSD17578Q3AT	Texas Instruments	30	20	—	7.3	1.9	22.2	1590	3.2	37	8-VSONP (3x3.3)	Active
DMG7702SFG-13	Diodes Incorporated	30	12	—	10	2.5	14.7	4310	0.89	—	PowerDI3333-8	Active
DMN3010LFG-13	Diodes Incorporated	30	11	30	8.5	2.5	37	2075	0.9	—	PowerDI3333-8	Active
DMN3010LFG-7	Diodes Incorporated	30	11	30	8.5	2.5	37	2075	0.9	—	PowerDI3333-8	Active
NTTFS4C08NTAG	onsemi	30	9.3	—	5.9	2.2	18.2	1113	0.82	25.5	8-WDFN (3.3x3.3)	Active

Engineering Selection Recommendations

Primary Substitute (Manufacturer Recommended): AON7380 from Alpha & Omega Semiconductor Inc. is the manufacturer-recommended replacement. It maintains the same 30V Vdss rating, identical 8-DFN-EP (3x3) package footprint, and Active product status. The AON7380 provides improved on-resistance (6.8mOhm vs. 8mOhm) and reduced input capacitance (825pF vs. 1300pF), resulting in lower switching losses. Higher continuous drain current at Tc (24A) provides enhanced thermal margin. This part is suitable for direct replacement in new designs.

Texas Instruments NexFET Series: CSD17304Q3, CSD17308Q3, CSD17578Q3A, and CSD17578Q3AT are Active status parts from Texas Instruments. These devices maintain 30V Vdss compatibility and offer improved on-resistance characteristics. CSD17304Q3 and CSD17578Q3A/Q3AT provide continuous drain current at Ta of 15A and 20A respectively, meeting or exceeding the AON7200 specification. All Texas Instruments substitutes carry ROHS3 compliance and Active product status, making them suitable for new designs. Package variations (8-VSON-CLIP, 8-VSONP) require PCB layout verification for footprint compatibility.

Infineon OptiMOS Series: BSZ088N03LSGATMA1 maintains 30V Vdss and 40A Tc rating, providing equivalent thermal performance. However, this part carries "Not For New Designs" status and should be used only for legacy system maintenance or where existing inventory is available.

Diodes Incorporated PowerDI Series: DMG7702SFG-13, DMN3010LFG-13, and DMN3010LFG-7 are Active status alternatives with 30V Vdss. These parts feature lower power dissipation at Ta (0.89W to 0.9W) but reduced continuous drain current at Ta (11A to 12A). These substitutes are suitable for applications where thermal performance is less critical or where lower gate charge is beneficial.

onsemi WDFN Package: NTTFS4C08NTAG offers 30V Vdss in an 8-WDFN (3.3x3.3) package with Active status. The 9.3A continuous drain current at Ta is below the AON7200 specification and should be evaluated for current margin in the target application.

Compliance and Certification: All recommended Active status substitutes carry ROHS3 compliance, REACH Unaffected status, and EAR99 export classification, matching the AON7200 regulatory profile.

Frequently Asked Questions (FAQ)

Q: Can the AON7380 be used as a direct replacement for the AON7200?

A: Yes. The AON7380 is the manufacturer-recommended substitute from Alpha & Omega Semiconductor Inc. Both devices share identical 30V Vdss rating, 8-DFN-EP (3x3) package footprint, and operating temperature range (-55°C to 150°C). The AON7380 provides improved electrical performance with lower on-resistance (6.8mOhm vs. 8mOhm) and reduced input capacitance (825pF vs. 1300pF). No circuit modifications are required.

Q: What is the significance of the difference between Ta and Tc current ratings?

A: Ta (ambient temperature) and Tc (case temperature) represent continuous drain current under different thermal conditions. Ta ratings assume ambient air cooling, while Tc ratings assume direct case cooling via thermal interface material or heatsink. The AON7200 supports 15.8A at Ta and 40A at Tc. Substitute parts must maintain at least 15.8A at Ta to ensure equivalent performance in standard cooling scenarios. Higher Tc ratings indicate improved thermal management capability.

Q: Why do some substitute parts have different package designations despite similar dimensions?

A: Package designations reflect manufacturer-specific naming conventions. For example, 8-DFN-EP, 8-VSON-CLIP, 8-WDFN, and PowerDI3333-8 are all 8-pin surface mount packages with similar footprints (3x3 or 3.3x3.3 mm). While electrical performance is equivalent, PCB layout and thermal via patterns may require adjustment. Verify package dimensions and thermal pad specifications in the target application before substitution.

Q: What is the impact of on-resistance (RDS(on)) differences between substitute parts?

A: On-resistance directly affects power dissipation and thermal performance. Lower RDS(on) reduces I²R losses. The AON7200 specifies 8mOhm at 20A, 10V. Substitutes with lower RDS(on) (such as CSD17304Q3 at 7.5mOhm or NTTFS4C08NTAG at 5.9mOhm) reduce power dissipation and heat generation. Substitutes with higher RDS(on) (such as CSD17308Q3 at 10.3mOhm) increase power dissipation and may require enhanced thermal management. Select based on thermal budget requirements.

Q: Are there any gate drive compatibility concerns when substituting parts?

A: Gate charge (Qg) and input capacitance (Ciss) affect gate drive requirements. The AON7200 specifies 20nC gate charge at 10V and 1300pF input capacitance at 15V. Substitutes with significantly different values (such as NTTFS4C08NTAG at 18.2nC and 1113pF, or DMN3010LFG series at 37nC and 2075pF) may require gate driver adjustment. Verify that the existing gate driver can supply adequate current and voltage for the substitute part's gate charge specification.

Q: Why is product status (Active vs. Obsolete vs. Not For New Designs) important?

A: Product status indicates manufacturer support and long-term availability. Obsolete parts (AON7200) are no longer manufactured and inventory is limited. Active status parts (AON7380, CSD17304Q3, CSD17578Q3A, DMG7702SFG-13, DMN3010LFG series, NTTFS4C08NTAG) are currently produced and supported for new designs. "Not For New Designs" parts (BSZ088N03LSGATMA1) are available but not recommended for new applications. For production designs, select Active status substitutes to ensure long-term supply chain stability.

Q: What thermal considerations apply when selecting a substitute?

A: Power dissipation at Ta and Tc determines thermal performance. The AON7200 dissipates 3.1W at Ta and 62W at Tc. Substitutes with lower power dissipation (such as CSD17304Q3 at 2.7W Ta) reduce heatsink requirements. Substitutes with higher power dissipation (such as DMN3010LFG at 0.9W Ta but lower current rating) may require different thermal management. Verify that the substitute's thermal characteristics are compatible with the target application's cooling design.

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