KEMET UD2-5NU General Purpose Relay DPDT Equivalent & Substitute Parts

Part Overview

The KEMET UD2-5NU is a general purpose relay with DPDT (Double Pole Double Throw) contact configuration, rated for 1A switching capacity at 5VDC coil voltage. This surface mount relay is designed for applications requiring dual-channel switching with non-latching operation. The part is Active status and ROHS3 compliant, making it suitable for modern electronic assemblies. Equivalent and substitute parts within the KEMET product family provide alternative sourcing options while maintaining identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Coil Voltage	5VDC
Contact Form	DPDT (2 Form C)
Contact Rating (Current)	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
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the UD2-5NU are qualified based on identical electrical and mechanical parameters. All substitute parts maintain the following critical specifications:

Coil voltage: 5VDC
Contact configuration: DPDT (2 Form C)
Contact rating: 1A
Switching voltage: 250VAC, 220VDC maximum
Coil current: 28mA
Coil resistance: 178 Ohms
Mounting type: Surface Mount
Termination style: Gull Wing
Operating temperature: -40°C to 85°C
Coil type: Non Latching
Contact material: Silver Alloy, Gold Alloy
RoHS3 compliance
MSL rating: 1 (Unlimited)

Substitution is valid across series designations (UD2, EB2, UB2) when all parameters listed above are identical. Packaging format (Tube) is consistent across all qualified substitutes.

Parameter Comparison

Part Number	Manufacturer	Series	Coil Voltage	Contact Form	Contact Rating	Coil Current	Coil Resistance	Operating Temp	RoHS Status	Inventory (Pcs)
UD2-5NU	KEMET	UD2	5VDC	DPDT (2 Form C)	1 A	28 mA	178 Ω	-40°C ~ 85°C	ROHS3	5782
EB2-5NU	KEMET	EB2	5VDC	DPDT (2 Form C)	1 A	28 mA	178 Ω	-40°C ~ 85°C	ROHS3	6718
UB2-5NU	KEMET	UB2	5VDC	DPDT (2 Form C)	1 A	28 mA	178 Ω	-40°C ~ 85°C	ROHS3	4472
UB2-5NUN	KEMET	UB2	5VDC	DPDT (2 Form C)	1 A	28 mA	178 Ω	-40°C ~ 85°C	ROHS3	7559
UD2-5NUN	KEMET	UD2	5VDC	DPDT (2 Form C)	1 A	28 mA	178 Ω	-40°C ~ 85°C	ROHS3	1227

Engineering Selection Recommendations

All substitute parts listed are Active status products manufactured by KEMET with ROHS3 compliance and REACH unaffected status. Selection among UD2-5NU, EB2-5NU, UB2-5NU, UB2-5NUN, and UD2-5NUN is based on availability and inventory levels. The EB2-5NU variant offers the highest current inventory at 6718 pieces. The UB2-5NUN variant provides 7559 pieces in stock. Both UD2 series options (UD2-5NU and UD2-5NUN) maintain the original series designation with 5782 and 1227 pieces respectively.

All parts share identical electrical performance characteristics, thermal operating range, and compliance certifications. Component selection should prioritize supply chain availability and lead time requirements.

Frequently Asked Questions (FAQ)

Q: Can EB2-5NU be used as a direct replacement for UD2-5NU?

A: Yes. The EB2-5NU is a parametric equivalent with identical coil voltage (5VDC), contact configuration (DPDT), current rating (1A), coil current (28mA), coil resistance (178 Ohms), operating temperature range (-40°C to 85°C), and all other electrical specifications. Both are surface mount with gull wing termination and ROHS3 compliant.

Q: What is the difference between UD2-5NU and UD2-5NUN?

A: Both parts are from the UD2 series with identical electrical and mechanical parameters. The suffix variation (NU vs NUN) does not affect the core specifications provided. All parameters including coil voltage, contact rating, operating temperature, and compliance status are identical.

Q: Are UB2 series relays compatible with UD2 series applications?

A: Yes. UB2-5NU and UB2-5NUN are parametric equivalents to UD2-5NU. All critical specifications are identical: 5VDC coil voltage, DPDT contact form, 1A rating, 28mA coil current, 178 Ohm coil resistance, and -40°C to 85°C operating range. Series designation does not indicate functional differences for these parts.

Q: What packaging format is used for all substitute parts?

A: All parts listed (UD2-5NU, EB2-5NU, UB2-5NU, UB2-5NUN, UD2-5NUN) are supplied in Tube packaging format.

Q: Are there any compliance or certification differences between substitute parts?

A: No. All substitute parts maintain identical RoHS3 compliance, REACH unaffected status, ECCN EAR99 classification, and HTSUS 8536.41.0020 code. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all parts.

Q: Which substitute part has the best availability?

A: The UB2-5NUN variant has the highest inventory level at 7559 pieces, followed by EB2-5NU at 6718 pieces. The UD2-5NU original part has 5782 pieces in stock.

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