KA-14DG-24 Equivalent & Substitute Parts

Part Overview

The KA-14DG-24 is a general purpose relay manufactured by TE Connectivity Potter & Brumfield Relays, featuring a 3PDT (3 Form C) contact configuration with a 24VDC coil and 10A contact rating. This relay is designed for chassis mount applications with solder lug termination. The product is classified as obsolete, making identification of equivalent substitute parts necessary for ongoing system maintenance and new design implementations where this relay type is required.

Substiute Parts

KA-14DG-24

TE Connectivity Potter & Brumfield RelaysIn Stock: 1141KA-14DG-24 Datasheet

Current PartRFQ

KRPA-14DG-24

TE Connectivity Potter & Brumfield RelaysIn Stock: 877KRPA-14DG-24 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KA-14DG-24 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Coil voltage: 24VDC
• Contact form: 3PDT (3 Form C)
• Contact rating: 10 A minimum
• Switching voltage: 240VAC maximum
• Coil current: 51 mA
• Coil resistance: 472 Ohms
• Must operate voltage: 18 VDC

Mechanical and Environmental Compatibility:

• Contact material: Silver Cadmium Oxide (AgCdO)
• Coil insulation: Class B
• Operating temperature range: Must accommodate -45°C to 85°C minimum
• Relay type: General purpose, non-latching coil

Compliance Requirements:

• RoHS3 compliance
• ECCN: EAR99
• HTSUS: 8536.41.0050

The KRPA-14DG-24 meets all electrical and material specifications. The primary difference is the mounting and termination approach: the KA-14DG-24 uses chassis mount with solder lug termination, while the KRPA-14DG-24 uses socketable mounting with 11-pin octal plug-in termination. This difference requires mechanical redesign consideration but does not affect electrical performance or functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

For Direct Electrical Substitution:

The KRPA-14DG-24 provides complete electrical and functional equivalence to the KA-14DG-24. All critical electrical parameters—coil voltage, contact configuration, current rating, switching voltage, coil resistance, and must-operate voltage—are identical. Both relays use identical contact material (Silver Cadmium Oxide) and coil insulation class (Class B), ensuring equivalent performance in switching applications.

Compliance and Availability Considerations:

The KA-14DG-24 is classified as obsolete, while the KRPA-14DG-24 maintains active product status. Both parts are ROHS3 compliant and carry identical ECCN and HTSUS classifications, ensuring regulatory equivalence for procurement and export purposes.

Mechanical Integration Differences:

The primary distinction between these parts is the mounting and termination approach. The KA-14DG-24 uses chassis mount with solder lug termination, while the KRPA-14DG-24 uses socketable mounting with 11-pin octal plug-in termination. Applications requiring the original chassis mount configuration with solder lugs will require mechanical redesign to accommodate the KRPA-14DG-24's socketable interface.

Operating Temperature Consideration:

The KA-14DG-24 operates across -45°C to 85°C, while the KRPA-14DG-24 operates across -45°C to 70°C. Applications requiring operation above 70°C cannot use the KRPA-14DG-24 as a substitute.

Frequently Asked Questions (FAQ)

Q: Can the KRPA-14DG-24 replace the KA-14DG-24 in existing applications?

A: Electrical substitution is valid. The KRPA-14DG-24 provides identical coil voltage, contact configuration, current rating, and switching characteristics. However, the different mounting type (socketable versus chassis mount) and termination style (11-pin octal plug-in versus solder lug) require mechanical redesign of the circuit board or mounting assembly.

Q: Are there any electrical performance differences between these relays?

A: No. Both relays share identical coil voltage (24VDC), contact form (3PDT), current rating (10A), switching voltage (240VAC maximum), coil current (51 mA), coil resistance (472 Ohms), and must-operate voltage (18 VDC). Contact material and coil insulation class are also identical.

Q: What is the significance of the different operating temperature ranges?

A: The KA-14DG-24 operates from -45°C to 85°C, while the KRPA-14DG-24 operates from -45°C to 70°C. Applications requiring operation above 70°C must use the KA-14DG-24 or identify alternative parts with higher temperature ratings. Applications operating within -45°C to 70°C can use either part without temperature-related restrictions.

Q: Why is the KA-14DG-24 listed as obsolete?

A: The KA-14DG-24 is classified as obsolete by the manufacturer. The KRPA-14DG-24 represents the active product line continuation from TE Connectivity Potter & Brumfield Relays for this relay type. New designs should incorporate the KRPA-14DG-24 where mounting flexibility permits.

Q: What does the different termination style mean for circuit board design?

A: The KA-14DG-24 uses solder lug termination, requiring direct soldering to circuit board pads or wire connections. The KRPA-14DG-24 uses 11-pin octal plug-in termination, requiring an octal socket base on the circuit board. This difference necessitates different PCB layouts and cannot be accommodated through simple component swapping.

Q: Are both relays RoHS compliant?

A: Yes. Both the KA-14DG-24 and KRPA-14DG-24 are ROHS3 compliant and carry identical ECCN (EAR99) and HTSUS (8536.41.0050) classifications.

Q: Can I use the KRPA-14DG-24 in applications requiring the full -45°C to 85°C temperature range?

A: No. The KRPA-14DG-24 is rated only to 70°C maximum. Applications requiring operation above 70°C must use the KA-14DG-24 or identify alternative parts with extended temperature ratings.