UC2-5NU General Purpose Relay DPDT Equivalent & Substitute Parts

Part Overview

The UC2-5NU is a general purpose relay manufactured by KEMET, classified as a DPDT (Double Pole Double Throw, 2 Form C) configuration with through-hole mounting. This relay operates at 5VDC coil voltage with a 1A contact rating and is designed for general switching applications requiring non-latching operation. The part is currently in active production status with 450,300 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are required due to inventory constraints, design flexibility, or application-specific needs within the same functional category.

Substiute Parts

UC2-5NU

KEMETIn Stock: 450344UC2-5NU Datasheet

Current PartRFQ

EA2-5NU

KEMETIn Stock: 10226EA2-5NU Datasheet

Parametric EquivalentRFQ

UA2-5NU

KEMETIn Stock: 10440UA2-5NU Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The UC2-5NU relay has two identified parametric equivalents: EA2-5NU and UA2-5NU, both manufactured by KEMET. These substitutes are classified as equivalent based on the following criteria:

Electrical Equivalence: All three parts share identical coil voltage (5VDC), contact form (DPDT), contact rating (1A), switching voltage (250VAC, 220VDC - Max), coil current (28 mA), coil resistance (178 Ohms), and timing specifications (2 ms operate time, 1 ms release time).

Mechanical Equivalence: All three parts feature through-hole mounting with PC pin termination style, identical contact material composition (Silver Alloy, Gold Alloy), and the same operating temperature range (-40°C ~ 85°C).

Compliance Equivalence: All three parts maintain ROHS3 compliance, REACH unaffected status, and identical ECCN (EAR99) and HTSUS (8536.41.0020) classifications.

Series Differentiation: The primary distinction between these parts is the relay series designation: UC2 (main part), EA2 (substitute), and UA2 (substitute). These series variations represent different internal design architectures while maintaining functional equivalence for the specified parameters.

Parameter Comparison

Engineering Selection Recommendations

All three relay models—UC2-5NU, EA2-5NU, and UA2-5NU—are functionally equivalent for applications requiring a 5VDC DPDT general purpose relay with 1A contact rating and through-hole PC pin termination. Selection between these parts should be based on the following factors:

Inventory Availability: UC2-5NU maintains the highest stock level at 450,300 units. EA2-5NU and UA2-5NU each maintain 10,180 and 10,400 units respectively. Component selection should prioritize availability based on project lead time requirements.

Compliance Status: All three parts maintain identical compliance certifications: ROHS3 compliant, REACH unaffected, and EAR99 export classification. No compliance-based differentiation exists between these options.

Active Production Status: All three parts are in active production status, ensuring long-term availability and supply chain stability for both current and future procurement cycles.

Series Architecture: While UC2, EA2, and UA2 represent different internal relay architectures, the provided electrical and mechanical parameters are identical. Series selection may be driven by PCB layout constraints, historical design precedent, or supplier preference, but no technical performance differentiation is specified in the provided parameters.

Frequently Asked Questions (FAQ)

Q: Can EA2-5NU or UA2-5NU be used as direct replacements for UC2-5NU in existing designs?

A: Yes. All three relays share identical electrical specifications (5VDC coil voltage, DPDT contact form, 1A rating, 28 mA coil current, 178 Ohm coil resistance), identical mechanical specifications (through-hole mounting, PC pin termination), and identical timing characteristics (2 ms operate time, 1 ms release time). Direct substitution is supported for applications within the specified parameters.

Q: Are there any differences in contact material between these three relay models?

A: No. All three models utilize identical contact material composition: Silver Alloy and Gold Alloy. Contact performance and switching characteristics are equivalent across all three parts.

Q: What is the significance of the different series designations (UC2, EA2, UA2)?

A: The series designation indicates different internal relay architectures and manufacturing processes within KEMET's product portfolio. However, for the specified electrical and mechanical parameters provided, these differences do not affect functional equivalence. Series selection is typically driven by design precedent, PCB layout compatibility, or supplier availability rather than performance differentiation.

Q: Do all three relays meet the same environmental operating specifications?

A: Yes. All three relays operate across the identical temperature range of -40°C to 85°C and maintain the same must-operate voltage (3.75 VDC) and must-release voltage (0.5 VDC) specifications. Environmental performance is equivalent.

Q: Are there any packaging or supply chain differences between these parts?

A: All three relays are supplied in tube packaging. UC2-5NU maintains significantly higher inventory (450,300 units) compared to EA2-5NU (10,180 units) and UA2-5NU (10,400 units). Supply chain selection should account for project lead time and volume requirements.

Q: What compliance certifications apply to all three relay models?

A: All three models are ROHS3 compliant, REACH unaffected, classified as EAR99 for export purposes, and share the identical HTSUS code (8536.41.0020). Regulatory compliance is uniform across all three options.