ACDBA1100LR-HF Schottky Diode Equivalent & Substitute Parts

Part Overview

The ACDBA1100LR-HF is an automotive-grade Schottky rectifier diode manufactured by Comchip Technology, rated for 100V DC reverse voltage and 1A average rectified current in a surface mount DO-214AC (SMA) package. This component is classified as Active product status with full AEC-Q101 automotive qualification and ROHS3 compliance. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and quality certifications align with application requirements, enabling procurement flexibility and supply chain continuity.

Substiute Parts

ACDBA1100LR-HF

Comchip TechnologyIn Stock: 2765ACDBA1100LR-HF Datasheet

Current PartRFQ

RB068L100DDTE25

Rohm SemiconductorIn Stock: 2815RB068L100DDTE25 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ACDBA1100LR-HF is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 100V
• Technology: Must be Schottky diode
• Package / Case: Must be DO-214AC (SMA) surface mount
• Grade: Must be Automotive
• Qualification: Must include AEC-Q101 certification
• RoHS Status: Must be ROHS3 Compliant

Allowable Variation Parameters:

• Current - Average Rectified (Io): Substitute may equal or exceed 1A
• Voltage - Forward (Vf) (Max): Substitute may equal or be lower than 750 mV @ rated current
• Current - Reverse Leakage @ Vr: Substitute may equal or be lower than 500 µA @ 100V
• Operating Temperature - Junction (Max): Substitute may equal or exceed 150°C

The RB068L100DDTE25 from Rohm Semiconductor qualifies as a direct substitute based on these criteria.

Parameter Comparison

Engineering Selection Recommendations

The RB068L100DDTE25 is a qualified substitute for the ACDBA1100LR-HF based on the following engineering criteria:

Electrical Compatibility: Both components share identical reverse voltage ratings (100V) and fast recovery Schottky technology. The substitute's 2A current rating exceeds the 1A requirement, providing design margin. Reverse leakage current in the substitute is significantly lower (15 µA versus 500 µA), indicating superior leakage performance.

Mechanical Compatibility: Both components use identical DO-214AC (SMA) surface mount packaging, ensuring PCB footprint and assembly process compatibility without design modification.

Quality & Compliance: Both components carry automotive-grade classification with AEC-Q101 qualification, ROHS3 compliance, and MSL 1 (Unlimited) moisture sensitivity rating. These certifications confirm suitability for automotive applications and environmental standards.

Product Status: Both components are Active products with current manufacturing support and inventory availability.

Selection between these parts should be based on procurement availability, cost considerations, and specific application thermal or leakage requirements.

Frequently Asked Questions (FAQ)

Q: Can the RB068L100DDTE25 be used as a direct replacement for the ACDBA1100LR-HF without PCB modification?

A: Yes. Both components use identical DO-214AC (SMA) surface mount packages with the same pinout and footprint. No PCB layout changes are required.

Q: What is the significance of the higher current rating (2A) in the RB068L100DDTE25?

A: The substitute's 2A rating exceeds the 1A requirement of the original part. This provides additional current capacity margin and does not create compatibility issues. The component will operate safely at or below its rated specifications.

Q: Are both parts suitable for automotive applications?

A: Yes. Both the ACDBA1100LR-HF and RB068L100DDTE25 carry automotive-grade classification and AEC-Q101 qualification, confirming suitability for automotive circuit protection and power management applications.

Q: How do the forward voltage characteristics compare?

A: The ACDBA1100LR-HF specifies 750 mV @ 1A, while the RB068L100DDTE25 specifies 790 mV @ 2A. At equivalent current levels, forward voltage performance is comparable. The substitute's slightly higher forward voltage at higher current is within normal Schottky diode operating characteristics.

Q: What is the difference in reverse leakage current between these parts?

A: The ACDBA1100LR-HF has 500 µA reverse leakage @ 100V, while the RB068L100DDTE25 has 15 µA @ 100V. The substitute exhibits significantly lower leakage, which may provide improved efficiency in low-power standby applications.

Q: Do both parts meet RoHS compliance requirements?

A: Yes. Both components are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, meeting environmental and handling standards for industrial and automotive applications.

Q: What packaging formats are available for these parts?

A: The ACDBA1100LR-HF is supplied in Tape & Reel (TR) format. The RB068L100DDTE25 is supplied in Cut Tape (CT) & Digi-Reel® format. Both formats are standard for surface mount component distribution and assembly.