CDST-16-HF Equivalent & Substitute Parts

Part Overview

The CDST-16-HF is a general-purpose rectifier diode manufactured by Comchip Technology, designed for surface mount applications in the SOT-23-3 package. This component operates at 75 V DC reverse voltage with a 150 mA average rectified current rating, suitable for small-signal switching and rectification circuits.

The CDST-16-HF carries an 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

CDST-16-HF

Comchip TechnologyIn Stock: 820CDST-16-HF Datasheet

Current PartRFQ

BAS16-HF

Comchip TechnologyIn Stock: 2343BAS16-HF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDST-16-HF is determined by electrical and mechanical parameter equivalence within the general-purpose rectifier diode category. The following parameters establish substitution validity:

Electrical Parameters:

• Voltage - DC Reverse (Vr) (Max): 75 V
• Current - Average Rectified (Io): 150 mA
• Voltage - Forward (Vf) (Max) @ If: 1.25 V @ 150 mA
• Reverse Recovery Time (trr): 6 ns
• Current - Reverse Leakage @ Vr: 1 µA @ 75 V
• Capacitance @ Vr, F: 2 pF @ 0V, 1MHz

Mechanical Parameters:

• Package / Case: TO-236-3, SC-59, SOT-23-3
• Mounting Type: Surface Mount
• Operating Temperature - Junction: -40°C to 150°C

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts must match all electrical parameters, maintain identical package and mounting specifications, and satisfy the same environmental and compliance requirements.

Parameter Comparison

Engineering Selection Recommendations

The BAS16-HF is a direct electrical and mechanical equivalent to the CDST-16-HF. Both components are manufactured by Comchip Technology and share identical electrical specifications across all critical parameters: reverse voltage, forward current, forward voltage drop, reverse recovery time, reverse leakage current, and junction capacitance.

The BAS16-HF maintains the same SOT-23-3 surface mount package, operating temperature range, and compliance certifications (ROHS3, MSL 1). The primary distinction is product status: the CDST-16-HF is obsolete, while the BAS16-HF is active and currently in production with higher inventory availability (2322 pieces in stock versus 790 pieces for the obsolete part).

For new designs and ongoing production support, the BAS16-HF is the appropriate selection. For existing applications currently using the CDST-16-HF, direct substitution with the BAS16-HF is electrically and mechanically valid without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can the BAS16-HF be used as a direct replacement for the CDST-16-HF in existing designs?

A: Yes. The BAS16-HF is electrically and mechanically equivalent to the CDST-16-HF. All electrical parameters, package specifications, and environmental ratings are identical. No circuit modifications are required.

Q: What is the primary reason for substitution?

A: The CDST-16-HF is obsolete. The BAS16-HF is the active equivalent part from the same manufacturer, ensuring continued supply chain availability and production support.

Q: Are the package dimensions identical?

A: Yes. Both parts use the SOT-23-3 package (also designated TO-236-3 or SC-59). Physical dimensions and pin configurations are identical, enabling direct PCB footprint compatibility.

Q: Do the compliance certifications match?

A: Yes. Both the CDST-16-HF and BAS16-HF are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. Compliance requirements are satisfied by either part.

Q: Is there a difference in operating temperature range?

A: The CDST-16-HF specifies -40°C to 150°C junction temperature. The BAS16-HF specifies 150°C maximum junction temperature. The BAS16-HF meets or exceeds the temperature requirements of the original part.

Q: What packaging format is available for the BAS16-HF?

A: The BAS16-HF is supplied in Tape & Reel (TR) format, suitable for automated assembly processes.