ACDBT-54A-HF Schottky Diode Equivalent & Substitute Parts

Part Overview

The ACDBT-54A-HF is a Schottky rectifier diode manufactured by Comchip Technology, designed for surface mount applications in the SOT-23-3 package. This single diode component operates at 30 V DC reverse voltage with a 200 mA average rectified current rating and is qualified to AEC-Q101 automotive standards. The part is currently in active production status with 1494 units in stock.

Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and compliance certifications are maintained across the specified parameter set. Alternative sources ensure supply chain continuity and design flexibility while preserving circuit functionality.

Substiute Parts

ACDBT-54A-HF

Comchip TechnologyIn Stock: 1539ACDBT-54A-HF Datasheet

Current PartRFQ

BAT54CTA

Diodes IncorporatedIn Stock: 5164BAT54CTA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ACDBT-54A-HF is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Schottky diode technology
• Voltage - DC Reverse (Vr) (Max): 30 V minimum
• Current - Average Rectified (Io): 200 mA per diode minimum
• Voltage - Forward (Vf) (Max) @ If: 1 V @ 100 mA maximum
• Reverse Recovery Time (trr): 5 ns maximum
• Current - Reverse Leakage @ Vr: within specified range

Mechanical Compatibility Criteria:

• Package / Case: SOT-23-3 (TO-236-3, SC-59)
• Mounting Type: Surface Mount
• Supplier Device Package: SOT-23-3

Compliance & Environmental Criteria:

• RoHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• Operating Temperature - Junction: -65°C to 125°C minimum

The BAT54CTA from Diodes Incorporated meets all substitution criteria. Although configured as a 1 Pair Common Cathode diode array, each individual diode element maintains electrical specifications equivalent to or exceeding the ACDBT-54A-HF single diode performance.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: ACDBT-54A-HF

• Active production status with established supply (1494 units in stock)
• AEC-Q101 automotive qualification
• Single diode configuration for direct pin-compatible replacement applications
• ROHS3 compliant with MSL 1 rating

Substitute Part: BAT54CTA

• Active production status with higher inventory availability (5101 units in stock)
• ROHS3 compliant with MSL 1 rating
• Diode array configuration (1 Pair Common Cathode) requires circuit design verification for pin compatibility
• Electrical performance per diode element meets or exceeds ACDBT-54A-HF specifications
• REACH Unaffected status provides additional regulatory clarity

Selection between these parts depends on circuit topology requirements. The ACDBT-54A-HF is suitable for single diode applications requiring direct SOT-23-3 pinout compatibility. The BAT54CTA is suitable for applications where dual diode functionality or common cathode configuration provides design advantages, provided PCB layout and schematic accommodate the array pinout.

Frequently Asked Questions (FAQ)

Q: Can BAT54CTA directly replace ACDBT-54A-HF in all applications?

A: Direct replacement depends on circuit design. Both parts share identical SOT-23-3 package dimensions and surface mount compatibility. However, BAT54CTA is a diode array with common cathode configuration, while ACDBT-54A-HF is a single diode. Verify that your circuit schematic and PCB layout accommodate the BAT54CTA pinout before substitution.

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

A: ACDBT-54A-HF specifies 2 µA @ 25 V reverse leakage, while BAT54CTA specifies 4 µA @ 25 V. Both values are within acceptable Schottky diode performance ranges for 30 V applications. The BAT54CTA leakage is within normal manufacturing tolerance for this device class.

Q: Are both parts automotive qualified?

A: ACDBT-54A-HF carries AEC-Q101 automotive qualification. BAT54CTA product status documentation does not explicitly list AEC-Q101 qualification in the provided parameters. For automotive applications requiring AEC-Q101 certification, verify qualification status with Diodes Incorporated before substitution.

Q: What does the "1 Pair Common Cathode" configuration mean for BAT54CTA?

A: BAT54CTA contains two Schottky diodes in a single SOT-23-3 package with a shared cathode terminal. This differs from ACDBT-54A-HF, which is a single diode. Applications using only one diode element can utilize BAT54CTA, but the second diode and common cathode connection must be accounted for in circuit design.

Q: Are both parts RoHS3 compliant?

A: Yes. Both ACDBT-54A-HF and BAT54CTA are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, suitable for standard PCB assembly and storage conditions.

Q: What is the inventory status for each part?

A: ACDBT-54A-HF has 1494 units in stock. BAT54CTA has 5101 units in stock. Higher BAT54CTA availability may provide supply chain advantages for high-volume production.