D3066 Telecom Relay DPDT 12V Equivalent & Substitute Parts

Part Overview

The D3066 is a telecom-grade double-pole double-throw (DPDT) relay manufactured by TE Connectivity Potter & Brumfield Relays, designated for 12VDC coil operation with 2A contact rating. This component is classified as obsolete, necessitating identification of active equivalent alternatives for ongoing system support and new design implementations. The relay features latching dual-coil architecture with through-hole PC pin termination, suitable for telecom switching applications requiring 250VAC/220VDC maximum switching voltage capability.

Substiute Parts

D3066

TE Connectivity Potter & Brumfield RelaysIn Stock: 926D3066 Datasheet

Current PartRFQ

TQ2-L2-12V

Panasonic Electric WorksIn Stock: 7149TQ2-L2-12V Datasheet

SimilarRFQ

TQ2H-L2-12V

Panasonic Electric WorksIn Stock: 1039TQ2H-L2-12V Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the D3066 telecom relay is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Coil voltage: 12VDC operation
• Contact form: DPDT (2 Form C) configuration
• Coil type: Latching, dual-coil architecture
• Termination style: PC pin through-hole mounting
• Coil resistance: 720 Ohms
• Coil current: 16.7 mA

Allowable Variation Parameters:

• Contact rating (current): Substitute must equal or exceed 2A requirement
• Switching voltage: Substitute must equal or exceed 250VAC/220VDC maximum
• Operating temperature range: Substitute must encompass or exceed -40°C ~ 85°C range
• Product status: Active alternatives preferred for long-term availability

The substitute parts TQ2-L2-12V and TQ2H-L2-12V from Panasonic Electric Works satisfy the critical matching parameters. However, both substitutes feature reduced contact rating (1A versus 2A) and reduced maximum switching voltage (125VAC/110VDC versus 250VAC/220VDC), representing functional limitations in high-current and high-voltage switching applications.

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution (Equivalent Current and Voltage Requirements):

The D3066 remains the preferred component when application requirements demand 2A contact rating and 250VAC/220VDC maximum switching voltage. No active equivalent with identical electrical specifications is available.

For Reduced-Load Applications (≤1A, ≤125VAC/110VDC):

TQ2-L2-12V and TQ2H-L2-12V from Panasonic Electric Works provide active alternatives for applications operating within reduced current and voltage parameters. Both parts maintain identical coil voltage, contact form, coil type, termination style, and coil resistance specifications. The Panasonic relays carry ROHS3 compliance and active product status, ensuring long-term availability and supply chain continuity.

Compliance Considerations:

All three relays comply with RoHS requirements and carry EAR99 export classification. The Panasonic substitutes additionally carry REACH Unaffected status. Operating temperature range reduction in Panasonic parts (70°C maximum versus 85°C) requires evaluation for applications exceeding 70°C ambient conditions.

Frequently Asked Questions (FAQ)

Q: Can TQ2-L2-12V or TQ2H-L2-12V directly replace D3066 in all applications?

A: Direct replacement is limited to applications where contact current does not exceed 1A and switching voltage does not exceed 125VAC/110VDC. Applications requiring 2A contact rating or 250VAC/220VDC switching voltage cannot use these substitutes.

Q: What is the difference between TQ2-L2-12V and TQ2H-L2-12V?

A: Both parts share identical electrical specifications, coil voltage, contact form, coil type, and termination style. The designation difference reflects internal construction variants within the Panasonic TQ series. Both are functionally equivalent for the specified parameters.

Q: Are the Panasonic substitutes suitable for high-temperature applications?

A: The Panasonic TQ2-L2-12V and TQ2H-L2-12V operate to 70°C maximum, compared to the D3066 specification of 85°C. Applications requiring operation above 70°C require the original D3066 or alternative components rated to 85°C.

Q: What is the packaging difference between D3066 and the Panasonic substitutes?

A: The D3066 is supplied in standard packaging. The Panasonic TQ2-L2-12V and TQ2H-L2-12V are supplied in tube packaging. Both maintain identical through-hole PC pin termination and mounting compatibility.

Q: Are there inventory considerations for component selection?

A: The D3066 is obsolete with 884 pieces in stock. TQ2-L2-12V has 7100 pieces available, and TQ2H-L2-12V has 969 pieces available. For new designs, Panasonic active alternatives provide superior long-term supply assurance.

Q: Do the Panasonic relays meet the same regulatory standards as the D3066?

A: Both Panasonic substitutes meet RoHS3 compliance and carry EAR99 export classification, matching the D3066 regulatory profile. The Panasonic parts additionally carry REACH Unaffected status.