CDBER42-HF Schottky Diode Equivalent & Substitute Parts

Part Overview

The CDBER42-HF is a 30V, 200mA Schottky rectifier diode manufactured by Comchip Technology in a 0503/SOD-723F surface mount package. This component is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and production continuity. The part operates as a small-signal Schottky diode suitable for low-voltage rectification and switching applications requiring fast recovery characteristics.

Substiute Parts

CDBER42-HF

Comchip TechnologyIn Stock: 1066CDBER42-HF Datasheet

Current PartRFQ

CDBER42

Comchip TechnologyIn Stock: 1215CDBER42 Datasheet

Parametric EquivalentRFQ

CDBER43

Comchip TechnologyIn Stock: 852CDBER43 Datasheet

Parametric EquivalentRFQ

CDBER54

Comchip TechnologyIn Stock: 1088CDBER54 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for CDBER42-HF is determined by strict parametric matching across electrical and mechanical specifications. The following criteria establish equivalence:

Primary Matching Criteria:

• Voltage - DC Reverse (Vr) Maximum: 30 V
• Current - Average Rectified (Io): 200 mA
• Package / Case: 0503 (1308 Metric)
• Mounting Type: Surface Mount
• Technology: Schottky

Secondary Matching Criteria:

• Reverse Recovery Time (trr): 5 ns
• Operating Temperature - Junction Maximum: 125°C
• RoHS and REACH compliance status

The substitute parts CDBER42, CDBER43, and CDBER54 all meet the primary matching criteria. CDBER42 and CDBER43 demonstrate complete parametric equivalence with CDBER42-HF. CDBER54 is included as a parametric equivalent with noted variations in forward voltage measurement conditions and reverse leakage current specifications.

Parameter Comparison

Engineering Selection Recommendations

CDBER42 (Preferred Primary Substitute)

CDBER42 is the direct parametric equivalent to CDBER42-HF with identical electrical specifications across all measured parameters. The part maintains Active product status, ensuring long-term availability and supply chain continuity. CDBER42 is supplied in Tape & Reel packaging with 1132 units in current inventory. This part is recommended as the primary replacement for CDBER42-HF in new designs and production applications.

CDBER43 (Secondary Substitute)

CDBER43 provides complete parametric equivalence to CDBER42-HF with identical electrical performance. The part is Active and available in Tape & Reel packaging with 807 units in inventory. CDBER43 is suitable for direct substitution where supply of CDBER42 is constrained.

CDBER54 (Conditional Substitute)

CDBER54 meets the primary matching criteria of 30V reverse voltage, 200mA average rectified current, and 0503 package specification. However, CDBER54 exhibits parametric variations: forward voltage is specified at 100mA rather than 200mA, and reverse leakage current is 2µA compared to 500nA. CDBER54 is Active with 1038 units in inventory. This part is suitable for applications where the specified leakage current and forward voltage measurement conditions do not impose design constraints.

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 rating, ensuring regulatory and environmental compatibility with CDBER42-HF applications.

Frequently Asked Questions (FAQ)

Q: Can CDBER42 directly replace CDBER42-HF in existing designs?

A: Yes. CDBER42 is a parametric equivalent with identical electrical specifications. The primary difference is product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. unspecified). No circuit modifications are required.

Q: What is the difference between CDBER42-HF and CDBER42?

A: Both parts share identical electrical parameters: 30V reverse voltage, 200mA average rectified current, 1V forward voltage at 200mA, and 5ns reverse recovery time. CDBER42-HF is obsolete; CDBER42 is active. CDBER42-HF packaging is unspecified; CDBER42 is supplied in Tape & Reel format.

Q: Is CDBER54 a suitable replacement for CDBER42-HF?

A: CDBER54 meets the core voltage and current specifications and shares the same 0503 package. However, CDBER54 specifies forward voltage at 100mA (not 200mA) and exhibits higher reverse leakage current (2µA vs. 500nA). Substitution is valid only if circuit design tolerates these parametric differences.

Q: What does the 0503 package designation mean?

A: 0503 refers to the surface mount package dimensions in metric format (1308 Metric equivalent). All substitute parts use this identical package, ensuring mechanical and thermal compatibility on PCB layouts.

Q: Are all substitute parts RoHS compliant?

A: Yes. CDBER42, CDBER43, and CDBER54 are all ROHS3 compliant and REACH unaffected, matching the compliance status of CDBER42-HF.

Q: What is the Moisture Sensitivity Level (MSL) significance?

A: MSL 1 (Unlimited) indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. All substitute parts carry MSL 1 rating.

Q: Which substitute part should I select for new production?

A: CDBER42 is the recommended primary choice due to complete parametric equivalence and active product status. CDBER43 is a secondary option if CDBER42 supply is unavailable. CDBER54 is suitable only if application-specific design constraints permit the specified parametric variations.