Equivalent & Substitute Parts for CMS40N03V8-HF

Part Overview

The CMS40N03V8-HF, manufactured by Comchip Technology, is an N-Channel MOSFET rated for 30 V drain-to-source voltage with continuous drain current capabilities of 25A (Ta) and 40A (Tc). The part is housed in an 8-DFN (SPR-PAK) (3.3x3.3mm) surface mount package. This device is classified as Obsolete, increasing the necessity of identifying suitable equivalent or substitute transistors, especially for production continuity and ongoing technical support.

Substiute Parts

CMS40N03V8-HF

Comchip TechnologyIn Stock: 931CMS40N03V8-HF Datasheet

Current PartRFQ

AON7318

Alpha & Omega Semiconductor Inc.In Stock: 21394AON7318 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitutes are identified based strictly on matching or exceeding the following parameters: FET type (N-Channel), technology (MOSFET), drain-to-source voltage, continuous drain current, Rds On, threshold voltage, gate charge, Vgs (Max), input capacitance, power dissipation, operating temperature range, surface mount package type (8-PowerWDFN, 8-DFN-EP, or similar, with identical 3.3x3.3mm footprint), RoHS compliance, and moisture sensitivity level. These criteria ensure that only parts with comparable or superior electrical and mechanical characteristics are considered valid substitutes.

Parameter Comparison

Engineering Selection Recommendations

The CMS40N03V8-HF is classified as Obsolete, while the AON7318 is Active. Both parts are ROHS3 Compliant and have a Moisture Sensitivity Level of 1 (Unlimited), and meet ECCN EAR99 classification. Part selection within this group therefore supports compliance and inventory availability requirements without introducing regulatory or supply chain risks based on the provided information.

Frequently Asked Questions (FAQ)

Q1: What parameters are critical for substituting CMS40N03V8-HF with another MOSFET?
A1: The substitution must match or exceed drain-to-source voltage, continuous drain current ratings, Rds On at the specified Vgs and current, gate threshold voltage, maximum gate voltage, gate charge, input capacitance, power dissipation ratings, package type and size, RoHS compliance, and moisture sensitivity level.

Q2: Are there differences in package or footprint to consider between CMS40N03V8-HF and AON7318?
A2: Both CMS40N03V8-HF and AON7318 use an 8-PowerWDFN or 8-DFN-EP package with a 3.3x3.3mm footprint. No mechanical incompatibility is indicated by the provided data.

Q3: What regulatory and compliance standards are supported by these MOSFETs?
A3: Both CMS40N03V8-HF and AON7318 are ROHS3 Compliant and classified under ECCN EAR99, with Moisture Sensitivity Level 1 (Unlimited).

Q4: Can substitute MOSFETs in this group be used for the same operating temperature range?
A4: Both the main and substitute parts support an operating temperature range of -55°C ~ 150°C (TJ).

Q5: What changes should be expected in electrical characteristics when substituting CMS40N03V8-HF with AON7318?
A5: The AON7318 offers lower Rds On and higher continuous drain current ratings. Other characteristics, including voltage, type, and compliance, are consistent based on provided parameters.