KEMET UB2-12NUN General Purpose Relay DPDT Equivalent & Substitute Parts

Part Overview

The KEMET UB2-12NUN is a general purpose relay with DPDT (2 Form C) contact configuration, rated for 1 A switching capacity at 12VDC coil voltage. This surface mount relay is designed for applications requiring dual-pole, dual-throw switching functionality with non-latching operation. The part is Active in product status and maintains full compliance with RoHS3 and REACH regulations. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical compatibility, and operational characteristics that ensure direct functional interchangeability in circuit applications.

Substiute Parts

UB2-12NUN

KEMETIn Stock: 1021UB2-12NUN 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

Substitute parts for the UB2-12NUN are identified as parametric equivalents within the KEMET relay portfolio. Substitution is based on the following critical parameters that must match exactly:

• Coil Voltage: 12VDC (all substitutes maintain this specification)
• Contact Form: DPDT (2 Form C) (all substitutes provide identical switching configuration)
• Contact Rating: 1 A (all substitutes rated for identical current capacity)
• Switching Voltage: 250VAC, 220VDC - Max (all substitutes support identical voltage switching)
• Coil Current: 11.7 mA (all substitutes draw identical coil current)
• Coil Type: Non Latching (all substitutes operate with non-latching functionality)
• Mounting Type: Surface Mount (all substitutes use identical PCB mounting method)
• Termination Style: Gull Wing (all substitutes use identical lead configuration)
• Operating Temperature Range: -40°C ~ 85°C (all substitutes operate across identical temperature range)
• Coil Resistance: 1.03 kOhms (all substitutes maintain identical coil impedance)

The substitute parts differ only in series designation (EB2, UB2, UD2), which reflects internal design variations within KEMET's relay architecture while maintaining complete electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts—EB2-12NU, UB2-12NU, and UD2-12NU—are direct parametric equivalents to the UB2-12NUN and are suitable for circuit-level substitution. Selection among these parts should be based on the following factors:

Compliance and Regulatory Status: All substitute parts maintain Active product status and full compliance with RoHS3 and REACH regulations, ensuring regulatory continuity in applications subject to environmental directives.

Inventory Availability: The UB2-12NU variant offers the highest inventory level (11,953 pcs), followed by EB2-12NU (2,220 pcs) and UD2-12NU (2,500 pcs). Component availability should be evaluated against project lead time requirements.

Series Designation: The EB2, UB2, and UD2 series designations represent distinct product lines within KEMET's relay architecture. Selection of a specific series should align with existing design documentation and supply chain qualification records.

Electrical Performance: All substitute parts deliver identical electrical performance across coil voltage, contact rating, switching voltage, coil current, and timing characteristics. No performance differentiation exists between the main part and substitutes.

Frequently Asked Questions (FAQ)

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

A: Yes. All substitute parts match the UB2-12NUN across all critical electrical and mechanical parameters, including coil voltage (12VDC), contact form (DPDT), current rating (1 A), switching voltage (250VAC/220VDC), coil current (11.7 mA), mounting type (Surface Mount), and termination style (Gull Wing). Direct substitution is supported without circuit modification.

Q: What is the difference between the UB2, EB2, and UD2 series relays?

A: The series designation reflects internal design variations within KEMET's relay product architecture. From an electrical and mechanical standpoint, these series are functionally equivalent when comparing parts with identical voltage and contact specifications. Series selection should be based on design documentation, supply chain qualification, and inventory availability.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The UB2-12NUN and all identified substitute parts (EB2-12NU, UB2-12NU, UD2-12NU) are ROHS3 Compliant and REACH Unaffected, ensuring compliance with environmental regulations in all markets.

Q: What is the Moisture Sensitivity Level (MSL) for these relays?

A: All parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage, handling, or assembly processes.

Q: Can these relays operate below 9 VDC?

A: The Must Operate Voltage specification is 9 VDC. Operation below this threshold is not guaranteed. The Must Release Voltage is 1.2 VDC, indicating the minimum voltage at which the relay will release.

Q: What is the operating temperature range for these relays?

A: All parts operate across -40°C to 85°C. Applications requiring operation outside this range require alternative component selection.

Q: Are the contact materials identical across all substitute parts?

A: Yes. All parts use Silver Alloy and Gold Alloy contact materials, ensuring consistent contact performance and reliability across the substitution group.