EC2-9SNU General Purpose Relay DPDT Equivalent & Substitute Parts

Part Overview

The EC2-9SNU is a general purpose relay manufactured by KEMET, featuring a DPDT (2 Form C) contact configuration with a 9VDC coil voltage and 2A contact rating. This through-hole mounted relay is designed for switching applications up to 250VAC or 220VDC maximum. The product is currently obsolete, making identification of compatible substitute parts essential for system maintenance, repair, and redesign applications where continued functionality is required.

Substiute Parts

EC2-9SNU

KEMETIn Stock: 866EC2-9SNU Datasheet

Current PartRFQ

V23079C1106B301

TE Connectivity Potter & Brumfield RelaysIn Stock: 1073V23079C1106B301 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EC2-9SNU is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Coil Voltage: 9VDC
• Contact Form: DPDT (2 Form C)
• Contact Rating: 2 A minimum
• Switching Voltage: 250VAC, 220VDC maximum capability
• Mounting Type: Through Hole
• Termination Style: PC Pin
• Operating Temperature Range: -40°C ~ 85°C minimum
• Coil Type: Latching, Single Coil

The V23079C1106B301 manufactured by TE Connectivity Potter & Brumfield Relays meets all mandatory matching parameters and qualifies as a direct substitute for the obsolete EC2-9SNU.

Parameter Comparison

Engineering Selection Recommendations

The V23079C1106B301 is the qualified substitute for the obsolete EC2-9SNU based on the following engineering criteria:

Functional Equivalence: Both relays meet identical electrical specifications for coil voltage, contact configuration, current rating, and switching voltage. The mandatory operating parameters are fully matched.

Product Status Advantage: The V23079C1106B301 is an active product from TE Connectivity Potter & Brumfield Relays, ensuring continued availability and supply chain reliability. The EC2-9SNU is obsolete and subject to inventory depletion.

Compliance Status: The V23079C1106B301 maintains RoHS compliance and carries an MSL rating of 1 (Unlimited), indicating superior moisture handling characteristics compared to the original part. Both components are EAR99 classified and REACH unaffected.

Secondary Parameter Variations: The substitute exhibits lower coil current (7.8 mA versus 11.1 mA) and higher coil resistance (1.16 kOhms versus 810 Ohms), resulting in reduced power consumption. Operate and release times are slightly extended (4 ms each versus 2 ms and 1 ms respectively), which remains acceptable for general purpose switching applications within the specified operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can the V23079C1106B301 directly replace the EC2-9SNU in existing circuit designs?

A: Yes. The V23079C1106B301 meets all mandatory electrical and mechanical parameters required for direct substitution. Both relays feature identical coil voltage (9VDC), contact configuration (DPDT), current rating (2A), switching voltage capability (250VAC/220VDC), mounting type (through-hole), and termination style (PC pin). The substitute is pin-compatible and functionally equivalent.

Q: What are the differences in operating characteristics between these two relays?

A: The V23079C1106B301 operates with lower coil current (7.8 mA versus 11.1 mA) and higher coil resistance (1.16 kOhms versus 810 Ohms). Switching times are slightly longer: operate time increases from 2 ms to 4 ms, and release time increases from 1 ms to 4 ms. These differences do not affect compatibility in general purpose switching applications.

Q: Is the V23079C1106B301 available in the same packaging as the EC2-9SNU?

A: The V23079C1106B301 is supplied in tube packaging, while the EC2-9SNU packaging specification was not provided. Both components use identical through-hole PC pin termination and are mechanically compatible for PCB mounting.

Q: What compliance certifications apply to the substitute part?

A: The V23079C1106B301 is RoHS compliant, REACH unaffected, and classified as EAR99 for export control purposes. It carries an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Are there any circuit design considerations when switching from EC2-9SNU to V23079C1106B301?

A: The reduced coil current of the substitute (7.8 mA versus 11.1 mA) may allow use of higher impedance drive circuits. The slightly extended switching times (4 ms operate and release) should be evaluated against application timing requirements, though these values remain within acceptable ranges for general purpose relay applications.