CDBMHT160-HF Schottky Diode Equivalent & Substitute Parts

Part Overview

The CDBMHT160-HF is a Schottky rectifier diode manufactured by Comchip Technology, rated for 60 V DC reverse voltage and 1 A average rectified current in a surface mount SOD-123HT package. This component is classified as obsolete product status. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure procurement availability for applications requiring Schottky diode functionality within the specified electrical and mechanical parameters.

Substiute Parts

CDBMHT160-HF

Comchip TechnologyIn Stock: 15485CDBMHT160-HF Datasheet

Current PartRFQ

CDBMS1100-HF

Comchip TechnologyIn Stock: 2799CDBMS1100-HF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDBMHT160-HF is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - DC Reverse (Vr) rating must equal or exceed 60 V
• Current - Average Rectified (Io) must equal or exceed 1 A
• Forward voltage (Vf) characteristics must be compatible with circuit design
• Fast recovery speed classification (≤ 500ns, > 200mA) must be maintained
• Reverse leakage current must not exceed specified limits

Mechanical Compatibility Criteria:

• Surface mount technology requirement
• SOD-123 package family compatibility
• Operating temperature range must encompass -55°C to 150°C junction temperature

The CDBMS1100-HF qualifies as a manufacturer-recommended substitute based on these parameters.

Parameter Comparison

Engineering Selection Recommendations

The CDBMS1100-HF is designated as the manufacturer-recommended substitute for the obsolete CDBMHT160-HF. Selection of this substitute is supported by the following factors:

Product Status: The CDBMS1100-HF maintains active product status, ensuring continued availability and manufacturing support, whereas the CDBMHT160-HF is classified as obsolete.

Electrical Compatibility: The substitute part exceeds the reverse voltage rating (100 V vs. 60 V), providing design margin for applications operating at or below 60 V. Current rating remains equivalent at 1 A. Both parts maintain fast recovery Schottky characteristics and identical reverse leakage current specifications at their respective voltage ratings.

Compliance: Both parts are ROHS3 compliant and carry identical moisture sensitivity classification (MSL 1 - Unlimited), ensuring equivalent environmental and regulatory compliance.

Package Consideration: The substitute uses SOD-123F packaging versus the original SOD-123T. Both are surface mount SOD-123 family variants with compatible footprint dimensions for standard PCB assembly processes.

Temperature Range: The substitute operating temperature range (-50°C ~ 150°C) encompasses the critical upper limit of the original specification, with a minor reduction in lower temperature capability that does not affect most industrial applications.

Frequently Asked Questions (FAQ)

Q: Can the CDBMS1100-HF directly replace the CDBMHT160-HF in existing designs?

A: The CDBMS1100-HF is electrically compatible for applications designed for the CDBMHT160-HF. The higher reverse voltage rating (100 V) provides design margin. Forward voltage increases from 700 mV to 830 mV at 1 A, which may require circuit verification in precision applications. Package variants (SOD-123T vs. SOD-123F) are mechanically compatible for standard surface mount assembly.

Q: What are the key differences between these parts?

A: Primary differences are reverse voltage rating (60 V vs. 100 V), forward voltage (700 mV vs. 830 mV @ 1 A), capacitance (120pF vs. 25pF @ 4V, 1MHz), package designation (SOD-123T vs. SOD-123F), and product status (obsolete vs. active). Current rating and fast recovery speed characteristics are identical.

Q: Is the lower operating temperature limit of the substitute (-50°C vs. -55°C) a concern?

A: The substitute's lower temperature limit is -50°C versus -55°C for the original part. This 5°C difference affects only applications requiring operation below -50°C. Most industrial and commercial applications operate within the -50°C to 150°C range of the substitute.

Q: How do the package variants affect PCB assembly?

A: Both SOD-123T and SOD-123F are surface mount packages within the SOD-123 family with compatible footprint dimensions. Standard pick-and-place equipment and reflow soldering processes accommodate both variants without modification.

Q: Why is the forward voltage higher in the substitute?

A: The CDBMS1100-HF is rated for 100 V reverse voltage compared to 60 V for the original part. Higher voltage-rated Schottky diodes typically exhibit increased forward voltage drop due to semiconductor design trade-offs between voltage rating and forward conduction characteristics.

Q: Are there compliance or certification differences?

A: Both parts are ROHS3 compliant with identical moisture sensitivity levels (MSL 1 - Unlimited). No compliance or certification differences exist between the two parts.