UC2-12SNU General Purpose Relay DPDT Equivalent & Substitute Parts

Part Overview

The UC2-12SNU is a general purpose relay manufactured by KEMET, featuring a DPDT (2 Form C) contact configuration with 1A contact rating at 12VDC coil voltage. This component is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. The UC2-12SNU operates with a latching, single coil design and is rated for switching up to 250VAC or 220VDC maximum. Due to its obsolete status, substitute parts with identical electrical and mechanical specifications are required to maintain design compatibility and supply chain continuity.

Substiute Parts

UC2-12SNU

KEMETIn Stock: 863UC2-12SNU Datasheet

Current PartRFQ

UA2-12SNU

KEMETIn Stock: 1195UA2-12SNU Datasheet

SimilarRFQ

UB2-12SNU

KEMETIn Stock: 962UB2-12SNU Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the UC2-12SNU are identified based on strict electrical and mechanical parameter matching within the KEMET relay product family. The substitution logic is based on the following critical parameters that determine functional equivalence:

Electrical Parameters (Must Match):

• Coil voltage: 12VDC
• Contact form: DPDT (2 Form C)
• Contact rating: 1 A
• Switching voltage: 250VAC, 220VDC - Max
• Coil current: 8.3 mA
• Coil type: Latching, Single Coil
• Coil resistance: 1.44 kOhms
• Must operate voltage: 9 VDC
• Operate time: 2 ms
• Release time: 1 ms
• Operating temperature: -40°C ~ 85°C
• Contact material: Silver Alloy, Gold Alloy

Mechanical Parameters (Flexible):

• Mounting type: Through Hole or Surface Mount
• Termination style: PC Pin or Gull Wing
• Packaging: Tube or alternative

The UC2-12SNU has two active substitute parts within the KEMET UC/UA/UB series family: UA2-12SNU (Through Hole, Active status) and UB2-12SNU (Surface Mount, Active status). Both maintain identical electrical specifications and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

For Through Hole PCB Designs: The UA2-12SNU is the direct functional equivalent to the obsolete UC2-12SNU. Both components feature identical electrical specifications, PC Pin termination, and Through Hole mounting. The UA2-12SNU maintains Active product status with KEMET, ensuring long-term availability and supply chain stability. This part is recommended for designs currently using the UC2-12SNU where PCB layout and mounting infrastructure remain unchanged.

For Surface Mount PCB Designs: The UB2-12SNU provides electrical equivalence with Surface Mount capability and Gull Wing termination. This part is suitable for designs requiring conversion from Through Hole to Surface Mount technology while maintaining identical relay functionality. The UB2-12SNU is Active status and fully compliant with ROHS3 and REACH requirements.

Compliance Considerations: All substitute parts (UA2-12SNU and UB2-12SNU) maintain identical RoHS3 compliance, REACH Unaffected status, and EAR99 export classification as the original UC2-12SNU. No regulatory or compliance barriers exist for substitution.

Supply Chain Status: Both substitute parts are classified as Active products with current inventory availability, eliminating obsolescence risk associated with the UC2-12SNU.

Frequently Asked Questions (FAQ)

Q: Can the UA2-12SNU directly replace the UC2-12SNU in existing designs? A: Yes. The UA2-12SNU is electrically and mechanically equivalent to the UC2-12SNU. Both feature identical coil voltage (12VDC), contact form (DPDT), current rating (1A), switching voltage (250VAC/220VDC), timing specifications (2ms operate, 1ms release), and operating temperature range (-40°C to 85°C). The primary difference is product status: UA2-12SNU is Active while UC2-12SNU is Obsolete. Both use PC Pin termination and Through Hole mounting.

Q: What is the difference between the UA2-12SNU and UB2-12SNU? A: The electrical specifications are identical between these two parts. The primary differences are mounting technology and termination style. The UA2-12SNU uses Through Hole mounting with PC Pin termination, while the UB2-12SNU uses Surface Mount technology with Gull Wing termination. Selection depends on PCB design requirements and assembly process capabilities.

Q: Are there any compatibility issues when substituting the UC2-12SNU with UA2-12SNU or UB2-12SNU? A: For Through Hole designs, the UA2-12SNU is a direct pin-compatible replacement. For Surface Mount conversion, the UB2-12SNU requires PCB layout redesign to accommodate Gull Wing termination and Surface Mount footprint. No electrical compatibility issues exist; substitution is determined by mechanical and assembly requirements.

Q: Do the substitute parts meet the same regulatory and compliance standards? A: Yes. Both UA2-12SNU and UB2-12SNU are ROHS3 Compliant and REACH Unaffected, matching the compliance profile of the UC2-12SNU. Both carry EAR99 export classification and 8536.41.0020 HTSUS code.

Q: What is the coil resistance and current draw for these relays? A: All three parts (UC2-12SNU, UA2-12SNU, UB2-12SNU) have identical coil specifications: 1.44 kOhms resistance and 8.3 mA coil current at 12VDC. The must-operate voltage is 9VDC across all variants.

Q: Are there packaging differences between the substitute parts? A: The UA2-12SNU and UB2-12SNU are supplied in Tube packaging. The original UC2-12SNU packaging specification was not provided. Both substitute parts are available in standard tube packaging suitable for automated assembly processes.