CDST-16-G General Purpose Rectifier Diode Equivalent & Substitute Parts

Part Overview

The CDST-16-G is a general purpose rectifier diode manufactured by Comchip Technology, rated for 75V DC reverse voltage with 150mA average rectified current in a surface mount SOT-23-3 package. This diode is designed for standard rectification applications requiring small signal performance characteristics.

The CDST-16-G maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified based on matching electrical specifications and mechanical compatibility within the general purpose rectifier diode category.

Substiute Parts

CDST-16-G

Comchip TechnologyIn Stock: 857CDST-16-G Datasheet

Current PartRFQ

CDST-4148-G

Comchip TechnologyIn Stock: 11816CDST-4148-G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CDST-16-G are identified based on strict equivalence of the following critical parameters:

Electrical Equivalence Criteria:

• Voltage - DC Reverse (Vr) (Max): 75 V
• Current - Average Rectified (Io): 150 mA
• Voltage - Forward (Vf) (Max) @ If: 1.25 V @ 150 mA
• Package / Case: TO-236-3, SC-59, SOT-23-3
• Mounting Type: Surface Mount
• Operating Temperature - Junction (Max): 150°C

Compliance Equivalence Criteria:

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

The CDST-4148-G qualifies as a parametric equivalent substitute based on matching all critical electrical ratings and compliance requirements. Variations in reverse recovery time (trr) and reverse leakage current are within acceptable tolerance ranges for general purpose rectifier applications and do not disqualify substitution eligibility.

Parameter Comparison

Engineering Selection Recommendations

CDST-16-G (Primary Selection)

The CDST-16-G is the recommended primary selection for new designs. This part maintains Active product status, ensuring long-term availability and supply chain stability. It carries full RoHS3 compliance and REACH Unaffected designation, meeting current regulatory requirements for commercial and industrial applications.

CDST-4148-G (Substitute Selection)

The CDST-4148-G is electrically equivalent and mechanically compatible with the CDST-16-G. Both parts share identical voltage ratings, current ratings, forward voltage characteristics, and package specifications. However, the CDST-4148-G carries Obsolete product status, indicating discontinued manufacturing and limited future availability.

Selection of CDST-4148-G is appropriate only for:

• Replacement of existing assemblies using this part number
• Applications where existing inventory must be consumed
• Situations where supply of the primary part is temporarily unavailable

For new designs and long-term production requirements, CDST-16-G is the appropriate selection due to its Active status and assured supply continuity.

Frequently Asked Questions (FAQ)

Q: Can CDST-4148-G be used as a direct replacement for CDST-16-G in new designs?

A: CDST-4148-G is electrically and mechanically equivalent to CDST-16-G and will function identically in the circuit. However, CDST-4148-G carries Obsolete product status. For new designs requiring long-term supply assurance, CDST-16-G is the appropriate selection.

Q: What are the differences between CDST-16-G and CDST-4148-G?

A: The parts are electrically equivalent with matching voltage ratings (75V), current ratings (150mA), forward voltage (1.25V @ 150mA), and package specifications (SOT-23-3). Minor differences exist in reverse recovery time (CDST-16-G: 6ns; CDST-4148-G: 4ns) and reverse leakage current (CDST-16-G: 1µA; CDST-4148-G: 2.5µA). These variations do not affect substitution eligibility for general purpose rectifier applications.

Q: Are both parts available in the same package?

A: Yes. Both CDST-16-G and CDST-4148-G use the TO-236-3 / SC-59 / SOT-23-3 surface mount package. Mechanical compatibility is confirmed, and both parts are suitable for identical PCB layouts.

Q: What is the significance of the Obsolete status for CDST-4148-G?

A: Obsolete status indicates that Comchip Technology has discontinued manufacturing of this part. While existing inventory may be available, future supply cannot be assured. The CDST-16-G, with Active status, represents the current production equivalent and is recommended for designs requiring supply continuity beyond current inventory levels.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both CDST-16-G and CDST-4148-G are ROHS3 Compliant, REACH Unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. Compliance equivalence is confirmed across all regulatory designations.

Q: What packaging formats are available for these parts?

A: CDST-16-G is supplied in Tape & Reel (TR) format. CDST-4148-G is supplied in Cut Tape (CT) and Digi-Reel® format. Both formats are suitable for automated assembly processes, with format selection dependent on production volume and equipment compatibility.