ACDBAT3100-HF Schottky Diode Equivalent & Substitute Parts

Part Overview

The ACDBAT3100-HF is a Schottky rectifier diode manufactured by Comchip Technology, rated for 100V DC reverse voltage with 3A average rectified current in a 2010 surface mount package. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and procurement needs. The part carries automotive-grade qualification (AEC-Q101) and maintains ROHS3 compliance.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	3 A
Voltage - Forward (Vf) (Max) @ If	850 mV @ 3 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	500 µA @ 100 V
Capacitance @ Vr, F	180pF @ 4V, 1MHz
Grade	Automotive
Qualification	AEC-Q101
Package / Case	2010 (5025 Metric)
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the ACDBAT3100-HF is determined by the following critical electrical and mechanical parameters:

Mandatory Matching Criteria:

Voltage - DC Reverse (Vr) (Max): 100 V minimum
Technology: Schottky diode
Grade: Automotive
Qualification: AEC-Q101
Operating Temperature Range: -55°C ~ 150°C minimum
RoHS Status: ROHS3 Compliant

Allowable Variation Criteria:

Current - Average Rectified (Io): Substitute must equal or exceed 3A requirement
Voltage - Forward (Vf): Substitute must not exceed 850 mV @ rated current
Package / Case: Surface mount packages with compatible PCB footprint and thermal characteristics
Reverse Leakage Current: Substitute must not exceed 500 µA @ 100V

The VS-10MQ100HM3/5AT qualifies as a substitute based on matching voltage rating, Schottky technology, automotive grade, AEC-Q101 qualification, and operating temperature range. Package differences (DO-214AC versus 2010) require PCB layout verification for mechanical compatibility.

Parameter Comparison

Parameter	ACDBAT3100-HF	VS-10MQ100HM3/5AT	Match Status
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	Matched
Current - Average Rectified (Io)	3 A	1 A	Substitute Lower
Voltage - Forward (Vf) (Max) @ If	850 mV @ 3 A	780 mV @ 1 A	Substitute Lower
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Matched
Current - Reverse Leakage @ Vr	500 µA @ 100 V	100 µA @ 100 V	Substitute Lower
Capacitance @ Vr, F	180pF @ 4V, 1MHz	38pF @ 10V, 1MHz	Substitute Lower
Grade	Automotive	Automotive	Matched
Qualification	AEC-Q101	AEC-Q101	Matched
Package / Case	2010 (5025 Metric)	DO-214AC, SMA	Different
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	Matched
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Matched
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Matched

Engineering Selection Recommendations

The VS-10MQ100HM3/5AT is electrically qualified as a substitute for the ACDBAT3100-HF based on:

Voltage Rating Compliance: Both parts maintain 100V DC reverse voltage rating, satisfying the primary electrical requirement.
Automotive Qualification: Both components carry AEC-Q101 qualification and automotive-grade designation, meeting regulatory and reliability standards for automotive applications.
Compliance Status: Both parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity, ensuring equivalent environmental and handling requirements.
Temperature Operating Range: Identical -55°C ~ 150°C junction temperature range ensures thermal compatibility in target applications.
Current Rating Consideration: The VS-10MQ100HM3/5AT is rated for 1A average rectified current, which is lower than the ACDBAT3100-HF 3A rating. Circuit design must confirm that application current requirements do not exceed 1A.
Package Transition: The change from 2010 (5025 Metric) to DO-214AC (SMA) package requires PCB layout modification and footprint redesign. Thermal performance characteristics of both packages must be evaluated for the specific application.

Frequently Asked Questions (FAQ)

Q: Can the VS-10MQ100HM3/5AT directly replace the ACDBAT3100-HF without PCB modification?

A: No. The package change from 2010 to DO-214AC (SMA) requires PCB footprint redesign. Direct pin-for-pin substitution is not possible without layout changes.

Q: What is the primary limitation of the VS-10MQ100HM3/5AT as a substitute?

A: The substitute part is rated for 1A average rectified current, compared to the original 3A rating. Applications requiring current above 1A cannot use this substitute.

Q: Are both parts suitable for automotive applications?

A: Yes. Both the ACDBAT3100-HF and VS-10MQ100HM3/5AT carry automotive-grade designation and AEC-Q101 qualification, meeting automotive reliability and qualification standards.

Q: Do the parts have different reverse leakage characteristics?

A: Yes. The VS-10MQ100HM3/5AT exhibits lower reverse leakage current (100 µA @ 100V) compared to the ACDBAT3100-HF (500 µA @ 100V). This represents improved leakage performance in the substitute part.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8541.10.0080. Moisture sensitivity level is 1 (Unlimited) for both components.

Q: How do forward voltage characteristics compare?

A: The VS-10MQ100HM3/5AT exhibits lower forward voltage (780 mV @ 1A) compared to the ACDBAT3100-HF (850 mV @ 3A). Direct comparison at identical current levels is not available from provided specifications.

Q: Are there thermal performance differences between the 2010 and DO-214AC packages?

A: Package thermal characteristics differ due to different form factors. The 2010 package provides larger surface area compared to DO-214AC (SMA). Thermal analysis specific to the application circuit is required.

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