KEMET UD2-3NU-L General Purpose Relay DPDT 1A 3V Equivalent & Substitute Parts

Part Overview

The KEMET UD2-3NU-L is a general purpose relay with DPDT (2 Form C) contact configuration, rated for 1 A at 3VDC 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 ROHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the relay series, enabling component interchangeability for procurement flexibility, inventory optimization, or supply chain continuity.

Substiute Parts

UD2-3NU-L

KEMETIn Stock: 3255UD2-3NU-L Datasheet

Current PartRFQ

EB2-3NU-L

KEMETIn Stock: 65012EB2-3NU-L Datasheet

Parametric EquivalentRFQ

UB2-3NUN-L

KEMETIn Stock: 1344UB2-3NUN-L Datasheet

Parametric EquivalentRFQ

UD2-3NUN-L

KEMETIn Stock: 2085UD2-3NUN-L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the KEMET UD2-3NU-L are identified based on strict electrical and mechanical parameter equivalence. All substitute parts maintain identical specifications across the following critical parameters: coil voltage (3VDC), contact form (DPDT 2 Form C), contact rating (1 A), switching voltage (250VAC, 220VDC - Max), coil current (46.7 mA), non-latching coil type, surface mount mounting type, gull wing termination, operating temperature range (-40°C ~ 85°C), contact material (Silver Alloy, Gold Alloy), coil resistance (64.3 Ohms), must operate voltage (2.25 VDC), must release voltage (0.3 VDC), operate time (2 ms), release time (1 ms), and compliance certifications (ROHS3, REACH Unaffected, EAR99).

Substitution differences are limited to series designation and packaging configuration. The UD2-3NU-L is supplied in Tape & Reel (TR) packaging. Equivalent parts are available in alternative packaging formats: Cut Tape (CT) & Digi-Reel® for EB2-3NU-L, and Cut Tape (CT) for UB2-3NUN-L and UD2-3NUN-L. Series variations (UD2, EB2, UB2) represent different relay platform designs within KEMET's general purpose relay portfolio, all meeting identical electrical performance requirements for this 3V DPDT 1A configuration.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts—EB2-3NU-L, UB2-3NUN-L, and UD2-3NUN-L—are functionally equivalent to the KEMET UD2-3NU-L for applications requiring 3VDC DPDT 1A general purpose relay switching. Selection among these parts is determined by packaging and supply availability requirements rather than electrical performance differences.

The UD2-3NU-L in Tape & Reel (TR) packaging is suitable for high-volume automated assembly processes. The EB2-3NU-L, available in Cut Tape (CT) & Digi-Reel® packaging, provides flexibility for both automated and manual assembly operations. The UB2-3NUN-L and UD2-3NUN-L, supplied in Cut Tape (CT) packaging, are appropriate for lower-volume applications or manual placement scenarios.

All parts maintain Active product status and full compliance with ROHS3, REACH Unaffected, and EAR99 classifications. Moisture Sensitivity Level 1 (Unlimited) indicates no special moisture handling requirements during storage or assembly. Selection should be based on assembly process requirements, inventory management strategy, and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can EB2-3NU-L replace UD2-3NU-L in a circuit design?

A: Yes. The EB2-3NU-L maintains identical electrical specifications including coil voltage (3VDC), contact form (DPDT), contact rating (1 A), switching voltage (250VAC, 220VDC - Max), coil current (46.7 mA), operating temperature range (-40°C ~ 85°C), and all timing parameters. The difference is series designation and packaging format. Both are ROHS3 compliant and Active status products.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) packaging?

A: Tape & Reel (TR) packaging supplies components on continuous tape wound on reels, optimized for high-speed automated pick-and-place assembly. Cut Tape (CT) packaging provides components on tape segments cut to specific lengths, suitable for lower-volume production or manual assembly. Digi-Reel® is a KEMET proprietary reel format compatible with standard tape handling equipment. Electrical performance is identical across all packaging formats.

Q: Are UB2-3NUN-L and UD2-3NUN-L interchangeable with UD2-3NU-L?

A: Yes, from an electrical and mechanical standpoint. All three parts share identical coil voltage, contact configuration, current ratings, switching voltage, timing characteristics, and operating temperature range. The differences are series platform (UB2 versus UD2) and packaging type (Cut Tape versus Tape & Reel). Both UB2-3NUN-L and UD2-3NUN-L are Active status products with full compliance certifications.

Q: Does Moisture Sensitivity Level 1 affect component handling?

A: No. MSL 1 (Unlimited) indicates the component has no moisture sensitivity restrictions. These relays do not require special dry-pack storage, desiccant handling, or bake-out procedures prior to assembly. Standard warehouse storage conditions are acceptable.

Q: Can I mix different substitute parts in the same production batch?

A: Yes. All substitute parts meet identical electrical and mechanical specifications. However, packaging differences (TR, CT, CT & Digi-Reel®) may require different assembly equipment setup. Verify that your assembly process can accommodate the specific packaging format of each part number before mixing in production.

Q: What compliance certifications apply to all substitute parts?

A: All parts are ROHS3 compliant, REACH Unaffected, and classified as EAR99 for export control purposes. These certifications are consistent across UD2-3NU-L, EB2-3NU-L, UB2-3NUN-L, and UD2-3NUN-L.