CPDF12V Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The CPDF12V is a surface mount transient voltage suppressor diode manufactured by Comchip Technology, designed for general purpose overvoltage protection applications. This bidirectional Zener TVS diode operates with a 12V reverse standoff voltage and provides 25V maximum clamping voltage at peak pulse current. The component is housed in a 1005/SOD-323F package and is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Substitute parts are necessary when the original CPDF12V is unavailable due to inventory constraints, supply chain disruptions, or when alternative voltage ratings are required for circuit design modifications.

Substiute Parts

CPDF12V

Comchip TechnologyIn Stock: 950CPDF12V Datasheet

Current PartRFQ

CPDFR12V

Comchip TechnologyIn Stock: 989CPDFR12V Datasheet

DirectRFQ

SMF28CA-TP

Micro Commercial CoIn Stock: 12762SMF28CA-TP Datasheet

MFR RecommendedRFQ

SMF33CA-TP

Micro Commercial CoIn Stock: 3989SMF33CA-TP Datasheet

MFR RecommendedRFQ

SMF36CA-TP

Micro Commercial CoIn Stock: 6287SMF36CA-TP Datasheet

MFR RecommendedRFQ

SMF40CA-TP

Micro Commercial CoIn Stock: 30275SMF40CA-TP Datasheet

MFR RecommendedRFQ

SMF48CA-TP

Micro Commercial CoIn Stock: 12533SMF48CA-TP Datasheet

MFR RecommendedRFQ

SMF5.0CA-TP

Micro Commercial CoIn Stock: 10301SMF5.0CA-TP Datasheet

MFR RecommendedRFQ

SMF64CA-TP

Micro Commercial CoIn Stock: 12928SMF64CA-TP Datasheet

MFR RecommendedRFQ

SMF70CA-TP

Micro Commercial CoIn Stock: 32076SMF70CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CPDF12V is determined by the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Bidirectional Zener TVS diode configuration (1 channel)
• Voltage rating compatibility: Reverse standoff voltage and clamping voltage must match circuit protection requirements
• Peak pulse current capacity: Minimum 1A at 8/20µs pulse duration
• Power dissipation: Minimum 25W peak pulse rating
• Surface mount technology with compatible package footprint
• ROHS3 compliance and MSL 1 rating

Direct Equivalent: CPDFR12V (Comchip Technology) is a direct equivalent with identical electrical specifications and packaging.

Voltage-Rated Alternatives: The Micro Commercial Co SMF series TVS diodes listed below provide alternative voltage ratings while maintaining Zener type, bidirectional configuration, and surface mount construction. These parts are suitable for circuits requiring different overvoltage protection thresholds.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement: CPDFR12V is the recommended direct substitute for CPDF12V, offering identical electrical specifications and packaging. Both parts maintain Active product status and ROHS3 compliance.

Alternative Voltage Ratings: The SMF series TVS diodes from Micro Commercial Co are suitable alternatives when circuit design requires different overvoltage protection thresholds. All listed SMF parts maintain ROHS3 compliance, Active product status, and MSL 1 rating. Selection among SMF28CA-TP, SMF33CA-TP, SMF36CA-TP, SMF40CA-TP, SMF48CA-TP, SMF5.0CA-TP, SMF64CA-TP, and SMF70CA-TP depends on the required reverse standoff voltage and clamping voltage for the specific application circuit.

All substitute parts listed are ROHS3 compliant and REACH unaffected, meeting regulatory requirements equivalent to the original CPDF12V component.

Frequently Asked Questions (FAQ)

Q: Can CPDFR12V be used as a direct replacement for CPDF12V? A: Yes. CPDFR12V is a direct equivalent with identical reverse standoff voltage (12V), breakdown voltage (13V minimum), clamping voltage (25V maximum), peak pulse current (1A at 8/20µs), and package specification (1005/SOD-323F). Both parts are manufactured by Comchip Technology and maintain Active product status.

Q: What is the difference between CPDF12V and the SMF series alternatives? A: The primary differences are voltage rating and package type. CPDF12V operates at 12V reverse standoff in a 1005/SOD-323F package with 25W peak pulse power. SMF series parts offer multiple voltage ratings (5V to 70V) in SOD-123F packages with 200W peak pulse power rating. SMF selection depends on the required protection voltage threshold for your circuit.

Q: Are the SMF series parts compatible with CPDF12V PCB layouts? A: No. CPDF12V uses a 1005/SOD-323F package footprint, while SMF series parts use SOD-123F packages. These packages have different physical dimensions and pin configurations, requiring PCB layout modifications for substitution.

Q: Which SMF part should I select if I need higher voltage protection than CPDF12V? A: Selection depends on your circuit's required reverse standoff voltage. SMF28CA-TP (28V), SMF33CA-TP (33V), SMF36CA-TP (36V), SMF40CA-TP (40V), and SMF48CA-TP (48V) provide progressively higher voltage ratings. For applications exceeding 48V, SMF64CA-TP (64V) and SMF70CA-TP (70V) are available.

Q: Do all substitute parts meet the same compliance standards as CPDF12V? A: Yes. All listed substitute parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity rating, matching the compliance profile of CPDF12V.

Q: What is the peak pulse current difference between CPDF12V and SMF alternatives? A: CPDF12V is rated for 1A peak pulse current at 8/20µs. SMF series parts vary: SMF5.0CA-TP handles 21.7A, SMF28CA-TP handles 4.4A, SMF33CA-TP handles 3.8A, SMF36CA-TP handles 3.4A, SMF40CA-TP handles 3.1A, SMF48CA-TP handles 2.6A, SMF64CA-TP handles 1.7A, and SMF70CA-TP handles 1.5A. Higher voltage ratings generally correspond to lower peak pulse current capacity within the SMF series.