CPDQR3V3R-HF Equivalent & Substitute Parts

Part Overview

The CPDQR3V3R-HF is a Transient Voltage Suppressor (TVS) diode manufactured by Comchip Technology, designed for general-purpose overvoltage protection applications. This component is a unidirectional Zener diode in a 0402 surface mount package with a 3.3V reverse standoff voltage and 18V maximum clamping voltage at peak pulse current.

The CPDQR3V3R-HF is designated as Last Time Buy, indicating that the manufacturer has discontinued or will discontinue production. Identifying equivalent substitute parts is necessary to ensure continued availability for new designs, production runs, and field replacements.

Substiute Parts

CPDQR3V3R-HF

Comchip TechnologyIn Stock: 80323CPDQR3V3R-HF Datasheet

Current PartRFQ

CPDQC3V3R-HF

Comchip TechnologyIn Stock: 5875CPDQC3V3R-HF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CPDQR3V3R-HF is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Parameters (Must Match):

• Voltage - Reverse Standoff (Typ): 3.3V (Max)
• Voltage - Breakdown (Min): 5V
• Voltage - Clamping (Max) @ Ipp: 18V
• Current - Peak Pulse (10/1000µs): 2A (8/20µs)
• Power - Peak Pulse: 36W
• Capacitance @ Frequency: 18pF @ 1MHz
• Operating Temperature Range: -55°C ~ 150°C (TJ)

Mechanical Parameters (Must Match):

• Package / Case: 0402 (1006 Metric)
• Mounting Type: Surface Mount
• Supplier Device Package: 0402C/SOD-923F

Functional Parameters (Must Match):

• Type: Zener
• Bidirectional Channels: 1
• Applications: General Purpose

The CPDQC3V3R-HF meets all specified electrical and mechanical requirements and is classified as a direct equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

The CPDQC3V3R-HF is a direct electrical and mechanical equivalent to the CPDQR3V3R-HF. Both components share identical specifications across all critical TVS diode parameters: voltage ratings, peak pulse current, power dissipation, capacitance, and operating temperature range. Both are packaged in the 0402 (1006 Metric) surface mount form factor with the same supplier device package designation.

The primary distinction between these parts is product status and compliance certification. The CPDQR3V3R-HF is designated Last Time Buy, while the CPDQC3V3R-HF maintains Active status with confirmed ROHS3 compliance and MSL Level 1 rating. The CPDQC3V3R-HF is available in Tape & Reel packaging format, which is standard for production environments.

For new designs and ongoing production requirements, the CPDQC3V3R-HF is the appropriate selection due to its active product status and regulatory compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can the CPDQC3V3R-HF be used as a direct replacement for the CPDQR3V3R-HF in existing designs?

A: Yes. The CPDQC3V3R-HF is electrically and mechanically equivalent to the CPDQR3V3R-HF. All voltage ratings, current specifications, thermal characteristics, and package dimensions are identical. No circuit modifications are required.

Q: What is the difference between CPDQR3V3R-HF and CPDQC3V3R-HF?

A: Both parts are manufactured by Comchip Technology with identical electrical specifications. The CPDQR3V3R-HF is Last Time Buy status, while the CPDQC3V3R-HF is Active. The CPDQC3V3R-HF includes documented ROHS3 compliance and MSL Level 1 certification.

Q: Are there any packaging differences between these parts?

A: Both components use the 0402 (1006 Metric) surface mount package with SOD-923F supplier designation. The CPDQC3V3R-HF is supplied in Tape & Reel format, which is standard for automated assembly processes.

Q: What are the key parameters that determine substitution eligibility for this TVS diode?

A: Substitution is determined by matching: reverse standoff voltage (3.3V), breakdown voltage (5V minimum), clamping voltage (18V maximum), peak pulse current (2A at 8/20µs), power dissipation (36W), capacitance (18pF @ 1MHz), operating temperature range (-55°C to 150°C), and package type (0402 surface mount).

Q: Is the CPDQC3V3R-HF suitable for new production designs?

A: Yes. The CPDQC3V3R-HF is the recommended selection for new designs due to its Active product status, ROHS3 compliance, and confirmed availability. The CPDQR3V3R-HF Last Time Buy designation indicates limited future availability.

Q: What is the moisture sensitivity level of the CPDQC3V3R-HF?

A: The CPDQC3V3R-HF has MSL Level 1 (Unlimited), indicating no moisture sensitivity restrictions for storage, handling, or assembly processes.