EC2-9NU General Purpose Relay DPDT 2A 9V Equivalent & Substitute Parts

Part Overview

The EC2-9NU 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. The EC2-9NU is classified as obsolete, making identification of active equivalent parts essential for ongoing production support, maintenance, and new design implementations where this relay specification is required.

Substiute Parts

EC2-9NU

KEMETIn Stock: 948EC2-9NU Datasheet

Current PartRFQ

V23079A2006B301

TE Connectivity Potter & Brumfield RelaysIn Stock: 2946V23079A2006B301 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EC2-9NU 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 capability: 250VAC, 220VDC minimum
• Coil current: 15.6 mA nominal
• Mounting type: Through hole
• Termination style: PC pin
• Operating temperature range: -40°C ~ 85°C minimum
• Coil type: Non latching

Allowable Variations:

• Coil resistance within ±2% tolerance (579 Ohms ±12 Ohms)
• Operate and release times within component design specifications
• Contact material composition (silver alloy, gold alloy, silver nickel, or gold)
• Product status (active substitutes preferred for obsolete parts)
• Compliance certifications (RoHS, REACH)

The V23079A2006B301 manufactured by TE Connectivity Potter & Brumfield Relays meets all mandatory matching parameters and is classified as an active product, making it a direct functional equivalent for the obsolete EC2-9NU.

Parameter Comparison

Engineering Selection Recommendations

The V23079A2006B301 is the direct functional equivalent for the obsolete EC2-9NU. Selection is based on the following engineering criteria:

Electrical Equivalence: All critical electrical parameters match exactly, including coil voltage, contact configuration, current rating, and switching voltage capability. Coil resistance values are within acceptable tolerance (579 Ohms vs. 578 Ohms, representing 0.17% variance).

Mechanical Compatibility: Both relays feature identical through-hole mounting and PC pin termination, ensuring direct PCB footprint compatibility without layout modifications.

Operational Characteristics: Timing parameters (operate and release times) differ between the two parts. The V23079A2006B301 exhibits longer switching times (4 ms operate, 4 ms release) compared to the EC2-9NU (2 ms operate, 1 ms release). This difference must be evaluated within the context of the specific application's timing requirements.

Compliance Status: The V23079A2006B301 maintains RoHS compliance and is manufactured by TE Connectivity Potter & Brumfield Relays, an established relay manufacturer. The part is actively produced and stocked, eliminating obsolescence risk associated with the EC2-9NU.

Packaging: The V23079A2006B301 is supplied in tube packaging, whereas the EC2-9NU packaging format is not specified. Verify packaging requirements for your procurement and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the V23079A2006B301 be used as a direct replacement for the EC2-9NU in existing designs?

A: Yes, the V23079A2006B301 is electrically and mechanically equivalent to the EC2-9NU. Both relays share identical coil voltage (9VDC), contact configuration (DPDT), current rating (2A), and mounting specifications. Direct substitution is supported from an electrical and mechanical standpoint.

Q: What is the significance of the timing differences between these relays?

A: The EC2-9NU operates in 2 ms and releases in 1 ms, while the V23079A2006B301 operates and releases in 4 ms each. These timing differences are within normal relay design variations. Applications requiring specific switching speed performance must evaluate whether the longer switching times of the V23079A2006B301 are acceptable for the intended circuit function.

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

A: The EC2-9NU is ROHS3 compliant, and the V23079A2006B301 is RoHS compliant. Both parts carry EAR99 ECCN classification and share the same HTSUS code (8536.41.0020). The V23079A2006B301 carries MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage and handling.

Q: Why is the EC2-9NU classified as obsolete?

A: The EC2-9NU is listed as obsolete by KEMET. The V23079A2006B301 is an active product from TE Connectivity, ensuring continued availability, technical support, and supply chain stability for new designs and ongoing production requirements.

Q: What is the coil resistance tolerance between these relays?

A: The EC2-9NU has a coil resistance of 579 Ohms, and the V23079A2006B301 has 578 Ohms. This represents a 0.17% variance, which is within acceptable engineering tolerance for relay coil specifications and does not impact circuit performance in standard applications.

Q: Are the contact materials compatible between these relays?

A: The EC2-9NU uses silver alloy and gold alloy contacts, while the V23079A2006B301 uses silver nickel (AgNi) and gold (Au) contacts. Both material compositions are standard for general purpose relays and provide equivalent contact reliability and switching performance for the specified 2A current rating and 250VAC/220VDC switching voltage.