D3022 Telecom Relay DPDT Equivalent & Substitute Parts

Part Overview

The D3022 is a telecom-grade double-pole double-throw (DPDT) relay manufactured by TE Connectivity Potter & Brumfield Relays, part of the FP2/AXICOM series. This through-hole mounted relay operates at 4.5VDC with a 2A contact rating and is designed for telecom switching applications. The part is currently active in production with 1162 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and application-specific requirements where the D3022 may be unavailable or where alternative electrical characteristics better suit specific circuit demands.

Substiute Parts

D3022

TE Connectivity Potter & Brumfield RelaysIn Stock: 1259D3022 Datasheet

Current PartRFQ

TQ2-4.5V

Panasonic Electric WorksIn Stock: 1251TQ2-4.5V Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the D3022 with the TQ2-4.5V is based on the following matching parameters:

Matching Criteria:

• Coil Voltage: 4.5VDC (identical)
• Contact Form: DPDT (2 Form C) (identical)
• Mounting Type: Through Hole (identical)
• Termination Style: PC Pin (identical)
• Coil Type: Non Latching (identical)
• Relay Type: Telecom (identical)
• Moisture Sensitivity Level: 1 (Unlimited) (identical)
• ECCN Classification: EAR99 (identical)

Differing Parameters: The TQ2-4.5V operates at a reduced contact current rating of 1A compared to the D3022's 2A rating. The switching voltage maximum is also reduced to 125VAC/110VDC. Operating temperature range is narrower (-40°C ~ 70°C versus -40°C ~ 85°C). These differences establish the TQ2-4.5V as a substitute only for applications where the lower current and voltage ratings are acceptable.

Parameter Comparison

Engineering Selection Recommendations

D3022 Selection: The D3022 is the primary component choice for applications requiring 2A contact current capacity and switching voltages up to 250VAC/220VDC. This part is RoHS Compliant and maintains an operating temperature range of -40°C to 85°C, supporting extended thermal environments. The D3022 is active in production with established inventory availability.

TQ2-4.5V Selection: The TQ2-4.5V is a valid substitute only when application requirements permit a 1A contact current maximum and 125VAC/110VDC switching voltage limits. This part is ROHS3 Compliant and includes REACH Unaffected status. The TQ2-4.5V operates within a narrower temperature range (-40°C to 70°C) and is supplied in tube packaging. Both parts share identical coil voltage, contact form, mounting type, and termination style, ensuring mechanical and electrical interface compatibility within the specified parameter constraints.

Frequently Asked Questions (FAQ)

Q: Can the TQ2-4.5V directly replace the D3022 in all applications?

A: No. The TQ2-4.5V has a reduced contact current rating of 1A versus the D3022's 2A rating. Substitution is valid only for circuits where the maximum contact current does not exceed 1A and the switching voltage does not exceed 125VAC/110VDC.

Q: What is the primary difference between these two relays?

A: The D3022 supports higher contact current (2A) and higher switching voltages (250VAC/220VDC) compared to the TQ2-4.5V (1A, 125VAC/110VDC). Both operate at 4.5VDC coil voltage with identical DPDT contact form and through-hole mounting.

Q: Are both parts RoHS compliant?

A: Yes. The D3022 is RoHS Compliant, and the TQ2-4.5V is ROHS3 Compliant. Both meet current environmental compliance standards.

Q: What is the operating temperature difference?

A: The D3022 operates from -40°C to 85°C, while the TQ2-4.5V operates from -40°C to 70°C. Applications requiring operation above 70°C require the D3022.

Q: Do these relays have different coil currents?

A: Yes. The D3022 draws 17.8 mA, while the TQ2-4.5V draws 31.1 mA. Circuit design must account for this difference in power supply requirements.

Q: Are the contact materials the same?

A: No. The D3022 uses Palladium (Pd), Ruthenium (Ru), and Gold (Au), while the TQ2-4.5V uses Silver (Ag) and Gold (Au). Contact material selection affects switching characteristics and application suitability.

Q: What packaging formats are available?

A: The D3022 packaging is not specified in the provided data. The TQ2-4.5V is supplied in tube packaging.

Q: Can I use the TQ2-4.5V in a high-temperature application?

A: No. The TQ2-4.5V maximum operating temperature is 70°C. For applications exceeding this temperature, the D3022 with its 85°C maximum rating is required.