UD2-5NU-L General Purpose Relay DPDT 1A 5V Equivalent & Substitute Parts

Part Overview

The UD2-5NU-L is a general purpose relay manufactured by KEMET, classified as a DPDT (Double Pole Double Throw, 2 Form C) surface mount component with a 5VDC coil voltage and 1A contact rating. This relay is designed for general switching applications requiring non-latching operation with fast response times. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are necessary when the primary part number becomes unavailable due to inventory constraints, supply chain disruptions, or when alternative packaging formats better suit manufacturing requirements while maintaining identical electrical and mechanical performance.

Substiute Parts

UD2-5NU-L

KEMETIn Stock: 2543UD2-5NU-L Datasheet

Current PartRFQ

UB2-5NU-L

KEMETIn Stock: 2420UB2-5NU-L Datasheet

Parametric EquivalentRFQ

UB2-5NUN-L

KEMETIn Stock: 5987UB2-5NUN-L Datasheet

Parametric EquivalentRFQ

UD2-5NUN-L

KEMETIn Stock: 2982UD2-5NUN-L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UD2-5NU-L relay is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters must remain identical for a part to function as a direct substitute:

Critical Equivalence Parameters:

• Coil voltage: 5VDC
• Contact form: DPDT (2 Form C)
• Contact rating: 1 A
• Switching voltage: 250VAC, 220VDC - Max
• Coil current: 28 mA
• Coil type: Non Latching
• Mounting type: Surface Mount
• Termination style: Gull Wing
• Operating temperature range: -40°C ~ 85°C
• Coil resistance: 178 Ohms
• Must operate voltage: 3.75 VDC
• Must release voltage: 0.5 VDC
• Operate time: 2 ms
• Release time: 1 ms
• Contact material: Silver Alloy, Gold Alloy
• RoHS compliance: ROHS3 Compliant
• MSL rating: 1 (Unlimited)

The substitute parts identified (UB2-5NU-L, UB2-5NUN-L, UD2-5NUN-L) maintain complete electrical and mechanical equivalence to the UD2-5NU-L. Differences exist only in series designation (UD2 versus UB2) and packaging format (Tape & Reel versus Cut Tape), which do not affect functional performance in the application circuit.

Parameter Comparison

Engineering Selection Recommendations

All four relay part numbers (UD2-5NU-L, UB2-5NU-L, UB2-5NUN-L, UD2-5NUN-L) are manufactured by KEMET and maintain active production status. Each part carries ROHS3 compliance certification and REACH unaffected status, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.

Selection between these equivalent parts should be based on packaging requirements and inventory availability:

Tape & Reel (TR) Packaging: UD2-5NU-L and UB2-5NU-L are supplied in Tape & Reel format, suitable for high-volume automated assembly operations where components are fed directly into pick-and-place equipment.

Cut Tape (CT) Packaging: UB2-5NUN-L and UD2-5NUN-L are supplied in Cut Tape format, appropriate for lower-volume production runs, prototyping, or manual assembly processes.

All parts are electrically and mechanically interchangeable within the circuit design. No circuit modifications, PCB layout changes, or firmware adjustments are required when substituting between these part numbers.

Frequently Asked Questions (FAQ)

Q: Can UD2-5NU-L be directly replaced with UB2-5NU-L on the PCB?

A: Yes. Both parts are electrically and mechanically identical. The series designation change (UD2 to UB2) does not affect functional performance. Pin configuration, coil voltage, contact rating, switching characteristics, and operating temperature range are identical. No circuit redesign is required.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on continuous carrier tape wound on reels, designed for automated assembly lines with pick-and-place equipment. Cut Tape (CT) packaging supplies components on cut sections of carrier tape, suitable for manual assembly, prototyping, or lower-volume production. Electrical and mechanical specifications are identical; packaging format only affects handling and assembly methodology.

Q: Are all four parts ROHS3 compliant?

A: Yes. UD2-5NU-L, UB2-5NU-L, UB2-5NUN-L, and UD2-5NUN-L all carry ROHS3 compliance certification. All parts are REACH unaffected. These certifications apply uniformly across all substitute options.

Q: Can these relays be used interchangeably in applications requiring 5VDC coil voltage?

A: Yes. All four part numbers operate with identical 5VDC coil voltage, 28 mA coil current, and 178 Ohm coil resistance. Must operate voltage is 3.75 VDC and must release voltage is 0.5 VDC for all parts. Switching characteristics (2 ms operate time, 1 ms release time) are identical across all substitutes.

Q: What is the MSL rating for these relays?

A: All four parts carry MSL 1 (Unlimited) rating, indicating unlimited shelf life under standard storage conditions without moisture sensitivity concerns. No special moisture barrier bags or desiccant requirements apply to any of these part numbers.

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

A: No. All four relays use identical contact material composition: Silver Alloy and Gold Alloy. Contact rating remains 1 A with maximum switching voltage of 250VAC or 220VDC across all substitute options.