Signal Relays, Up to 2 Amps

Part Number	Description / PDF	Quantity
UB2-5NEN-L KEMET	RELAY GEN PURPOSE DPDT 1A 5VDC	0
EE2-12NUX-L KEMET	RELAY GEN PURPOSE DPDT 2A 12VDC	1367
EE2-4.5NUX KEMET	RELAY GEN PURPOSE DPDT 2A 4.5VDC	0
EE2-24NUH-L KEMET	RELAY GEN PURPOSE DPDT 2A 24VDC	11217
UB2-3NE KEMET	RELAY GEN PURPOSE DPDT 1A 3VDC	0
EE2-4.5TNUH-L KEMET	RELAY GEN PURPOSE DPDT 2A 4.5VDC	395
EE2-3TNUH-L KEMET	RELAY GEN PURPOSE DPDT 2A 3VDC	81
EE2-5NUX-L KEMET	RELAY GEN PURPOSE DPDT 2A 5VDC	0
UB2-4.5NE-L KEMET	RELAY GEN PURPOSE DPDT 1A 4.5VDC	0
EE2-12SNUH KEMET	RELAY GEN PURPOSE DPDT 2A 12VDC	0
EA2-5TNU KEMET	RELAY GEN PURPOSE DPDT 1A 5VDC	3371
EE2-12TNU-L KEMET	RELAY GEN PURPOSE DPDT 2A 12VDC	285
EB2-24TNU-L KEMET	RELAY GEN PURPOSE DPDT 1A 24VDC	0
EB2-24TNU KEMET	RELAY GEN PURPOSE DPDT 1A 24VDC	0
UD2-4.5NE KEMET	RELAY GEN PURPOSE DPDT 1A 4.5VDC	0
EE2-4.5NUH KEMET	RELAY GEN PURPOSE DPDT 2A 4.5VDC	0
UD2-3SNUN KEMET	RELAY GEN PURPOSE DPDT 1A 3VDC	0
UD2-5NU-L KEMET	RELAY GEN PURPOSE DPDT 1A 5VDC	0
UD2-3NE-L KEMET	RELAY GEN PURPOSE DPDT 1A 3VDC	0
UB2-5SNUN-L KEMET	RELAY GEN PURPOSE DPDT 1A 5VDC	0

Signal Relays, Up to 2 Amps

1. Overview

Signal relays with ratings up to 2 amps are electromechanical or solid-state switching devices designed to control low-power electrical circuits. These components enable signal transmission isolation, circuit amplification, or switching automation in modern electronic systems. Their compact size and precise control capabilities make them essential in automation, telecommunications, and precision instrumentation systems.

2. Major Types and Functional Classification

Type	Functional Characteristics	Application Examples
Electromagnetic Relays	Mechanical switching via electromagnetic coil, standard form factor	Industrial control panels, HVAC systems
Solid-State Relays	No moving parts, zero-crossing switching, fast response	Temperature control systems, LED lighting
Reed Relays	Hermetically sealed contacts, high-speed operation	Telecom switching, test equipment
Time Delay Relays	Programmable switching intervals	Machinery automation, motor starters
High-Frequency Relays	Designed for RF/microwave signal paths	Wireless infrastructure, radar systems

3. Structure and Components

Typical construction includes:

Coil assembly (copper winding on bobbin)
Contact system (fixed and movable contacts)
Insulation housing (flame-retardant polymer)
Magnetic circuit (iron core and yoke)
Terminal system (PCB pins or screw terminals)

Advanced models incorporate EMI suppression circuits and LED status indicators.

4. Key Technical Parameters

Parameter	Typical Value	Importance
Rated Current	1-2 A resistive	Determines load capacity
Coil Voltage	5-48 VDC nominal	Dictates control circuit design
Contact Resistance	<50 m	Impacts signal integrity
Insulation Resistance	>100 M	Safety isolation performance
Mechanical Life	10-100 million operations	Durability indicator
Switching Speed	5-15 ms (EMR), <1 ms (SSR)	System response time

5. Application Fields

Industrial automation (PLCs, sensor interfaces)
Telecom infrastructure (signal routing switches)
Medical equipment (diagnostic device controls)
Smart home systems (HVAC thermostats)
Test & measurement (ATE machine interfaces)

6. Leading Manufacturers and Products

Manufacturer	Product Series	Key Features
Omron	G5LE-14-DC5	5 mm spacing, 2 A rating
Phoenix Contact	PSR-SCP-24UC	Plug-in design, LED indicators
TE Connectivity	RTX-S-DC5V	Automotive qualified
Siemens	3RT2025	Modular mounting system

7. Selection Recommendations

Key considerations:

Load type (resistive/inductive)
Environmental conditions (temperature/humidity)
Required make/break cycles
Regulatory certifications (UL/CSA/IEC)
PCB footprint constraints

Example: For medical equipment, select RoHS-compliant reed relays with 1.5 A rating and reinforced insulation.

8. Industry Trends

Current developments include:

Transition to surface-mount solid-state alternatives
Integration with IoT-enabled monitoring systems
Nanocoating for harsh environment protection
Increased adoption of 1 Form C contacts
Miniaturization (sub-10 mm package development)

Market forecasts predict 5.2% CAGR through 2027 driven by industrial automation growth.