SF2-DC24V Equivalent & Substitute Parts

Part Overview

The SF2-DC24V is a safety relay manufactured by Panasonic Electric Works, designed for industrial control applications requiring 4PST switching configuration with 6A contact rating at 24VDC coil voltage. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing maintenance, repair, and new design implementations where this relay specification remains functionally required.

Substiute Parts

SF2-DC24V

Panasonic Electric WorksIn Stock: 90408SF2-DC24V Datasheet

Current PartRFQ

SF2D-DC24V

Panasonic Electric WorksIn Stock: 5397SF2D-DC24V Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SF2-DC24V is determined by strict equivalence across the following critical parameters:

• Coil voltage specification (24VDC)
• Contact configuration (4PST with 2NO/2NC arrangement)
• Current rating (6A minimum)
• Switching voltage capability (440VAC, 30VDC maximum)
• Mounting type (Through Hole)
• Termination style (PC Pin)
• Electrical timing characteristics (operate and release times)
• Temperature operating range (-40°C ~ 70°C)
• Coil electrical properties (20.8 mA, 500mW, 1.15 kOhms)

The SF2D-DC24V meets all these criteria and qualifies as a direct substitute. The primary distinction is product status: SF2-DC24V is obsolete while SF2D-DC24V is active, and contact material differs (Silver Alloy versus Silver Tin Oxide).

Parameter Comparison

Engineering Selection Recommendations

The SF2D-DC24V is the direct substitute for the obsolete SF2-DC24V. Both components share identical electrical and mechanical specifications across all critical parameters including coil voltage, contact configuration, current rating, switching voltage, timing characteristics, and operating temperature range.

The SF2D-DC24V offers the advantage of active product status, ensuring continued availability and supply chain reliability. The SF2D-DC24V also provides ROHS3 compliance, meeting current environmental and regulatory requirements for new designs and manufacturing processes.

The contact material difference (Silver Alloy in SF2-DC24V versus Silver Tin Oxide in SF2D-DC24V) does not affect functional equivalence within the specified electrical parameters. Both materials maintain the 6A current rating and 440VAC/30VDC switching voltage capability.

Frequently Asked Questions (FAQ)

Q: Can SF2D-DC24V directly replace SF2-DC24V in existing applications?

A: Yes. The SF2D-DC24V is electrically and mechanically equivalent to SF2-DC24V. All coil specifications, contact ratings, switching voltages, timing characteristics, and mounting configurations are identical. Direct substitution is supported without circuit modification.

Q: What is the significance of the contact material difference?

A: The contact material difference (Silver Alloy versus Silver Tin Oxide) reflects manufacturing evolution within the same product family. Both materials meet the specified 6A current rating and 440VAC/30VDC switching voltage limits. Material selection does not affect functional compatibility in applications designed for SF2-DC24V specifications.

Q: Why is SF2-DC24V classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured by Panasonic Electric Works. The SF2D-DC24V represents the current production equivalent, offering the same electrical and mechanical functionality with active supply availability.

Q: Are there packaging differences between these parts?

A: SF2-DC24V is specified with "-" packaging notation, while SF2D-DC24V is supplied in Bulk packaging. Both use identical Through Hole mounting and PC Pin termination. Packaging differences do not affect electrical performance or mechanical fit.

Q: What compliance certifications apply to these relays?

A: Both parts maintain REACH Unaffected status and EAR99 export classification. SF2D-DC24V additionally provides ROHS3 compliance, meeting current environmental standards. Both components have MSL 1 (Unlimited) moisture sensitivity rating.