CDBA180-G Schottky Diode Equivalent & Substitute Parts

Part Overview

The CDBA180-G is a Schottky rectifier diode manufactured by Comchip Technology, rated for 80 V DC reverse voltage and 1 A average rectified current in a DO-214AC (SMA) surface mount package. This component is classified as obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this diode specification.

Substiute Parts

CDBA180-G

Comchip TechnologyIn Stock: 10470CDBA180-G Datasheet

Current PartRFQ

CDBA1100-HF

Comchip TechnologyIn Stock: 6405CDBA1100-HF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDBA180-G is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Technology type: Schottky rectifier diode
• Package / Case: DO-214AC (SMA) surface mount
• Current - Average Rectified (Io): 1 A minimum
• Voltage - DC Reverse (Vr) (Max): Equal to or greater than 80 V
• Mounting Type: Surface Mount

Acceptable Parameter Variations:

• Voltage - Forward (Vf) (Max) @ If: May vary within component specifications
• Current - Reverse Leakage @ Vr: May vary within component specifications
• Operating Temperature - Junction: May differ if application requirements are met
• Product Status: Active status preferred for ongoing availability

The CDBA1100-HF meets all mandatory compatibility criteria and is classified as a direct substitute for the CDBA180-G.

Parameter Comparison

Engineering Selection Recommendations

CDBA1100-HF as Direct Substitute:

The CDBA1100-HF is suitable as a direct substitute for the CDBA180-G based on the following factors:

1. Package Compatibility: Both components use identical DO-214AC (SMA) surface mount packaging, ensuring mechanical and electrical pin compatibility without PCB layout modifications.

2. Electrical Performance: The CDBA1100-HF maintains the same 1 A current rating and fast recovery speed characteristics. The 100 V reverse voltage rating exceeds the 80 V requirement of the original design, providing additional voltage margin.

3. Forward Voltage Improvement: The CDBA1100-HF exhibits a lower forward voltage drop (810 mV versus 850 mV at 1 A), which may reduce power dissipation in the application.

4. Product Status and Compliance: The CDBA1100-HF is classified as active product status, ensuring continued availability and supply chain support. The component is ROHS3 compliant, meeting current regulatory requirements.

5. Temperature Consideration: The CDBA1100-HF operating temperature range (-50°C to 150°C) is narrower at the lower end compared to the CDBA180-G (-65°C to 150°C). Verification of application minimum operating temperature is required if operation below -50°C is specified.

6. Regulatory Compliance: Both components maintain REACH Unaffected status and EAR99 export classification.

Frequently Asked Questions (FAQ)

Q: Can the CDBA1100-HF directly replace the CDBA180-G without PCB modifications?

A: Yes. Both components use the DO-214AC (SMA) surface mount package with identical pin configuration and footprint. No PCB layout changes are required for mechanical substitution.

Q: What is the significance of the higher 100 V rating on the CDBA1100-HF?

A: The CDBA1100-HF is rated for 100 V DC reverse voltage, which exceeds the 80 V requirement of the original CDBA180-G design. This provides additional voltage margin and allows the substitute to function in the original application without voltage derating concerns.

Q: How does the lower forward voltage drop of the CDBA1100-HF affect circuit performance?

A: The CDBA1100-HF exhibits 810 mV forward voltage drop at 1 A compared to 850 mV for the CDBA180-G. This 40 mV reduction may result in lower power dissipation and improved circuit efficiency. Circuit simulation or testing is recommended if power dissipation is a critical design parameter.

Q: Are there temperature range limitations when using the CDBA1100-HF?

A: The CDBA1100-HF operates from -50°C to 150°C, compared to -65°C to 150°C for the CDBA180-G. If the application requires operation below -50°C, the temperature range difference must be evaluated against actual system requirements.

Q: What compliance certifications apply to the CDBA1100-HF?

A: The CDBA1100-HF is ROHS3 compliant and maintains REACH Unaffected status. Both components share EAR99 export classification and identical HTSUS commodity codes.

Q: Why is the CDBA180-G classified as obsolete?

A: The CDBA180-G is listed as obsolete product status. The CDBA1100-HF, classified as active, represents the current production equivalent and is recommended for new designs and ongoing production support.

Q: Are there any reverse leakage differences between the two parts?

A: Both components specify 500 µA reverse leakage current. The CDBA1100-HF measurement is taken at 100 V, while the CDBA180-G is measured at 80 V. Leakage performance is comparable across the specified voltage ranges.

Q: What is the packaging format difference between the two parts?

A: The CDBA180-G packaging format is not specified in the provided data. The CDBA1100-HF is supplied in Tape & Reel (TR) format. Confirm packaging requirements for your procurement and assembly processes.