UB2-24NUN General Purpose Relay DPDT Equivalent & Substitute Parts

Part Overview

The UB2-24NUN is a general purpose relay manufactured by KEMET, classified as a DPDT (Double Pole Double Throw, 2 Form C) surface mount component. This relay operates at 24VDC coil voltage with a 1A contact rating and is designed for non-latching switching applications. The part is currently in active production status with 838 pieces available in new original inventory.

Identifying equivalent and substitute parts is necessary when the primary part number becomes unavailable, when supply chain constraints occur, or when design flexibility is required across manufacturing batches while maintaining identical electrical and mechanical performance.

Substiute Parts

UB2-24NUN

KEMETIn Stock: 861UB2-24NUN Datasheet

Current PartRFQ

UB2-24NU

KEMETIn Stock: 2277UB2-24NU Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UB2-24NUN relay is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match Exactly):

• Coil voltage: 24VDC
• Contact form: DPDT (2 Form C)
• Contact rating: 1 A
• Switching voltage: 250VAC, 220VDC - Max
• Coil current: 9.6 mA
• Coil type: Non Latching
• Coil resistance: 2.5 kOhms
• Must operate voltage: 18 VDC
• Must release voltage: 2.4 VDC
• Operate time: 2 ms
• Release time: 1 ms

Mechanical Parameters (Must Match Exactly):

• Mounting type: Surface Mount
• Termination style: Gull Wing
• Operating temperature range: -40°C ~ 85°C

Compliance Parameters (Must Match Exactly):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Only parts meeting all these criteria are classified as parametric equivalents and direct substitutes for the UB2-24NUN.

Parameter Comparison

Engineering Selection Recommendations

The UB2-24NU is a parametric equivalent substitute for the UB2-24NUN. Both parts are manufactured by KEMET within the UB2 series and share identical electrical specifications, mechanical characteristics, and compliance certifications.

Selection Basis:

Both parts maintain active production status, ensuring long-term availability and supply chain stability. Both are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The MSL rating of 1 (Unlimited) indicates no moisture sensitivity constraints during storage or handling.

The identical coil voltage (24VDC), contact form (DPDT), current rating (1A), and switching voltage specifications ensure direct functional interchangeability in circuit designs. Timing characteristics (2 ms operate time, 1 ms release time) and operating temperature range (-40°C ~ 85°C) are identical across both parts.

Surface mount gull wing termination and coil resistance (2.5 kOhms) are consistent, permitting direct PCB layout compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can UB2-24NU be used as a direct replacement for UB2-24NUN in existing designs?

A: Yes. The UB2-24NU is a parametric equivalent with identical electrical and mechanical specifications. No circuit design changes or PCB layout modifications are required.

Q: Are there any differences in coil voltage or contact rating between these parts?

A: No. Both parts operate at 24VDC coil voltage with 1A contact rating and 250VAC/220VDC maximum switching voltage.

Q: Do both parts have the same operating temperature range?

A: Yes. Both the UB2-24NUN and UB2-24NU operate across -40°C to 85°C.

Q: Are there packaging differences between UB2-24NUN and UB2-24NU?

A: Both parts are supplied in tube packaging with identical surface mount gull wing termination.

Q: What is the coil resistance for both parts?

A: Both parts have a coil resistance of 2.5 kOhms.

Q: Are both parts RoHS compliant?

A: Yes. Both UB2-24NUN and UB2-24NU are ROHS3 compliant.

Q: What is the moisture sensitivity level for these relays?

A: Both parts have an MSL rating of 1 (Unlimited), indicating no moisture sensitivity constraints.

Q: Can these parts be used interchangeably in high-frequency switching applications?

A: Both parts have identical operate time (2 ms) and release time (1 ms), making them suitable for the same switching speed requirements.