KEMET UD2-12NUN General Purpose Relay DPDT Equivalent & Substitute Parts

Part Overview

The KEMET UD2-12NUN is an active general purpose relay with DPDT (2 Form C) contact configuration, designed for surface mount applications. This relay operates at 12VDC coil voltage with 1A contact rating and is suitable for switching applications up to 250VAC or 220VDC. The part is ROHS3 compliant and carries MSL Level 1 rating, indicating unlimited shelf life under standard storage conditions. Equivalent and substitute parts within the KEMET relay portfolio provide identical electrical and mechanical performance characteristics, enabling flexible component sourcing and inventory management.

Substiute Parts

UD2-12NUN

KEMETIn Stock: 1034UD2-12NUN Datasheet

Current PartRFQ

EB2-12NU

KEMETIn Stock: 2317EB2-12NU Datasheet

Parametric EquivalentRFQ

UB2-12NU

KEMETIn Stock: 12008UB2-12NU Datasheet

Parametric EquivalentRFQ

UD2-12NU

KEMETIn Stock: 2593UD2-12NU Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KEMET UD2-12NUN relay is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute parts EB2-12NU, UB2-12NU, and UD2-12NU are classified as parametric equivalents because they maintain identical specifications in the following key areas:

Electrical Parameters: Coil voltage (12VDC), contact form (DPDT 2 Form C), contact rating (1A), switching voltage (250VAC/220VDC maximum), coil current (11.7 mA), coil resistance (1.03 kOhms), must operate voltage (9VDC), must release voltage (1.2VDC), operate time (2ms), and release time (1ms).

Mechanical Parameters: Surface mount mounting type, gull wing termination style, and operating temperature range (-40°C to 85°C).

Compliance Parameters: ROHS3 compliance, MSL Level 1 rating, REACH unaffected status, and active product status.

The primary distinction between substitute parts lies in their series designation (EB2, UB2, UD2) and inventory availability, not in functional or electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed—EB2-12NU, UB2-12NU, and UD2-12NU—are direct parametric equivalents to the KEMET UD2-12NUN and are suitable for direct replacement in applications requiring a 12VDC DPDT general purpose relay with 1A contact rating and surface mount gull wing termination.

Selection among equivalent parts should be based on:

Product Status: All substitute parts maintain active product status, ensuring continued availability and manufacturing support.

Compliance Certification: All parts are ROHS3 compliant and carry REACH unaffected status, meeting regulatory requirements for electronic component applications.

Inventory Availability: The UB2-12NU variant offers the highest inventory level (11,953 pcs), followed by UD2-12NU (2,500 pcs) and EB2-12NU (2,220 pcs). The main part UD2-12NUN has 924 pcs in stock.

Moisture Sensitivity: All parts carry MSL Level 1 rating, indicating unlimited shelf life and no special moisture control requirements during storage or handling.

No additional technical criteria beyond those provided in the specifications determine substitutability among these parts.

Frequently Asked Questions (FAQ)

Q: Can EB2-12NU, UB2-12NU, and UD2-12NU be used interchangeably with UD2-12NUN?

A: Yes. All three substitute parts are parametric equivalents with identical electrical specifications, mechanical configuration, and compliance certifications. They are suitable for direct replacement in any application designed for the UD2-12NUN.

Q: What is the difference between the UD2-12NUN and UD2-12NU?

A: The UD2-12NU differs from UD2-12NUN only in the final character of the part number designation. Both are from the UD2 series and share identical electrical and mechanical parameters. The difference reflects packaging or internal configuration variants within the same product line.

Q: Are there any differences in contact material between substitute parts?

A: No. All parts, including the main part and all substitutes, use Silver Alloy and Gold Alloy contact materials, ensuring consistent switching performance and reliability across all variants.

Q: What is the significance of the series designation (UD2, EB2, UB2)?

A: The series designation identifies the product family within KEMET's relay portfolio. While these relays belong to different series, they maintain identical electrical and mechanical specifications, allowing them to function as parametric equivalents.

Q: Do all substitute parts have the same operating temperature range?

A: Yes. All parts operate across the identical temperature range of -40°C to 85°C, ensuring consistent performance in equivalent thermal environments.

Q: Are there any MSL or moisture sensitivity differences?

A: No. All parts carry MSL Level 1 rating, indicating unlimited shelf life. No special moisture control measures are required for storage or handling of any variant.

Q: Which substitute part should be selected for new designs?

A: Selection should be based on inventory availability and supply chain considerations. All parts are functionally and electrically identical. The UB2-12NU offers the highest inventory availability, while UD2-12NU and EB2-12NU provide alternative sourcing options.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All parts, including the main part and all substitutes, are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for electronic component applications.