AZH2021 Equivalent & Substitute Parts

Part Overview

The AZH2021 is a snap action SPDT switch manufactured by Panasonic Industrial Automation Sales, designed for chassis mount applications requiring 5A at 125V AC or 30V DC. This component features a lever roller actuator with IP67 ingress protection and screw terminal connections. The product is currently obsolete, making identification of functionally equivalent alternatives essential for system maintenance, repair, and redesign applications where continued supply is required.

Substiute Parts

AZH2021

Panasonic Industrial Automation SalesIn Stock: 1144AZH2021 Datasheet

Current PartRFQ

D4MC-2020

Omron Automation and SafetyIn Stock: 330356D4MC-2020 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The D4MC-2020 qualifies as a functional substitute for the AZH2021 based on the following critical parameters:

Matching Parameters:

• Circuit configuration: Both are SPDT switches
• Switch function: Both operate as On-Momentary
• Voltage rating - AC: Both rated at 125V
• Voltage rating - DC: Both rated at 30V
• Actuator type: Both feature lever roller actuators
• Mounting type: Both are chassis mount
• Termination style: Both use screw terminals
• Ingress protection: Both provide IP67 protection
• Operating temperature range: Both operate from -10°C to 80°C

Substitution Basis: The D4MC-2020 exceeds the current rating requirements of the AZH2021 (10A AC vs. 5A AC), making it suitable for applications where the original 5A specification is required. Both components share identical voltage ratings, environmental protection, and mechanical interface characteristics, enabling direct functional replacement in chassis mount SPDT switching applications.

Parameter Comparison

Engineering Selection Recommendations

The D4MC-2020 is the active substitute for the obsolete AZH2021. Selection of the D4MC-2020 is supported by:

• Product Status: The D4MC-2020 is actively manufactured and stocked, ensuring long-term availability compared to the obsolete AZH2021
• Compliance: Both components maintain RoHS compliance; the D4MC-2020 additionally meets ROHS3 requirements and is REACH unaffected
• Electrical Performance: The D4MC-2020 provides higher current ratings (10A AC, 6A DC) than required by the AZH2021 specification (5A AC/DC), ensuring adequate margin for the original application
• Mechanical Compatibility: Identical mounting type, termination style, and actuator configuration enable direct physical replacement
• Environmental Specifications: Matching voltage ratings, temperature range, and IP67 protection ensure functional equivalence in the intended operating environment

Frequently Asked Questions (FAQ)

Q: Can the D4MC-2020 directly replace the AZH2021 in existing applications?

A: Yes. Both switches share identical circuit configuration (SPDT), voltage ratings (125V AC, 30V DC), mounting type (chassis mount), termination style (screw terminal), and environmental protection (IP67). The D4MC-2020 current rating exceeds the AZH2021 requirement, making it suitable for applications designed for 5A operation.

Q: What are the key differences between these switches?

A: The primary differences are manufacturer (Panasonic vs. Omron), product status (obsolete vs. active), and electrical life rating (100,000 cycles vs. 500,000 cycles). The D4MC-2020 provides higher current capacity and extended electrical life, both favorable characteristics for substitution.

Q: Are there packaging considerations for substitution?

A: The AZH2021 packaging information is not specified in the available data. The D4MC-2020 is supplied in bulk packaging. Physical dimensions and mounting hole patterns should be verified against the original equipment design to confirm mechanical fit.

Q: What compliance certifications apply to both switches?

A: Both components are RoHS compliant with MSL rating 1 (unlimited moisture sensitivity level). The D4MC-2020 additionally meets ROHS3 requirements and is REACH unaffected, providing enhanced regulatory coverage for new designs.

Q: Are there operational differences in switch actuation?

A: Both switches feature lever roller actuators with on-momentary function. Specific actuation force values differ (AZH2021: 250gf operating force; D4MC-2020: 300gf operating force) and operating position specifications vary. These differences should be evaluated against the specific application requirements.