ERZ-CF2MK820 Equivalent & Substitute Parts

Part Overview

The ERZ-CF2MK820 is an 82 V, 200 A Transient Voltage Suppressor (TVS) varistor manufactured by Panasonic Electronic Components. This component is designed for single-circuit surface mount applications using the MLCV 2-SMD J-Lead package. The part is currently classified as obsolete, making identification of compatible substitutes essential for ongoing system support and new design implementations where this voltage and current rating is required.

Substiute Parts

ERZ-CF2MK820

Panasonic Electronic ComponentsIn Stock: 839ERZ-CF2MK820 Datasheet

Current PartRFQ

ERZ-VF2M820

Panasonic Electronic ComponentsIn Stock: 68553ERZ-VF2M820 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ERZ-CF2MK820 is determined by the following critical parameters that must remain constant or compatible:

• Varistor Voltage Range: Minimum 74 V, Typical 82 V, Maximum 90 V
• Package / Case: 2-SMD, J-Lead (identical physical and electrical interface)
• Mounting Type: Surface Mount, MLCV
• Number of Circuits: Single circuit configuration
• Operating Temperature Range: -40°C to 85°C
• Maximum AC/DC Voltage Ratings: 50 V AC / 65 V DC

The ERZ-VF2M820 qualifies as a direct substitute because it maintains identical voltage specifications, package configuration, and thermal operating range. The primary distinction is an increased surge current rating (600 A versus 200 A) and higher energy dissipation capability (12.5 J versus 1.7 J), which represents an enhancement in transient protection capacity without compromising compatibility.

Parameter Comparison

Engineering Selection Recommendations

The ERZ-VF2M820 is the appropriate substitute for the obsolete ERZ-CF2MK820. Both components share identical voltage specifications and package configuration, ensuring direct compatibility in existing PCB layouts and circuit designs. The ERZ-VF2M820 is currently in active production status with substantial inventory availability, addressing the supply discontinuation of the original part.

The increased surge current rating (600 A) and energy dissipation (12.5 J) of the ERZ-VF2M820 provide enhanced transient protection margins without introducing any electrical or mechanical incompatibility. The substitute maintains the same thermal operating range and electrical interface characteristics required for seamless integration into existing applications.

Frequently Asked Questions (FAQ)

Q: Can the ERZ-VF2M820 be used as a direct replacement for the ERZ-CF2MK820 in existing designs?

A: Yes. Both parts maintain identical varistor voltage specifications (82 V typical), maximum AC/DC voltage ratings (50 V AC / 65 V DC), operating temperature range (-40°C to 85°C), and 2-SMD J-Lead package configuration. The substitute is electrically and mechanically compatible.

Q: What is the difference between the two parts?

A: The primary differences are surge current rating (ERZ-VF2M820: 600 A versus ERZ-CF2MK820: 200 A) and energy dissipation capability (ERZ-VF2M820: 12.5 J versus ERZ-CF2MK820: 1.7 J). These represent performance enhancements that do not affect compatibility.

Q: Why is the ERZ-CF2MK820 listed as obsolete?

A: The ERZ-CF2MK820 has been discontinued by Panasonic Electronic Components. The ERZ-VF2M820 represents the active production equivalent within the ZNR® varistor series.

Q: Are there any compliance or certification differences?

A: The ERZ-VF2M820 is RoHS3 compliant and REACH unaffected. Both parts carry the same ECCN (EAR99) and HTSUS (8533.40.4000) classifications.

Q: Will PCB layout modifications be required?

A: No. Both parts use identical 2-SMD J-Lead packaging, requiring no changes to PCB footprints or assembly procedures.