D3526N Equivalent & Substitute Parts Reference

Part Overview

The D3526N is a telecom relay manufactured by TE Connectivity Potter & Brumfield Relays, configured as a DPDT (2 Form C) surface mount component with 2A contact rating at 12VDC coil voltage. This part is classified as obsolete, necessitating identification of active equivalent alternatives for ongoing design support and procurement continuity. The D3526N operates across an industrial temperature range of -55°C to 85°C with palladium, ruthenium, and gold contact materials, designed for telecom switching applications requiring non-latching relay functionality.

Substiute Parts

D3526N

TE Connectivity Potter & Brumfield RelaysIn Stock: 992D3526N Datasheet

Current PartRFQ

TX2SS-12V

Panasonic Electric WorksIn Stock: 1814TX2SS-12V Datasheet

DirectRFQ

TXD2SS-12V

Panasonic Electric WorksIn Stock: 1076TXD2SS-12V Datasheet

SimilarRFQ

TXD2SS-12V-Z

Panasonic Electric WorksIn Stock: 1975TXD2SS-12V-Z Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the D3526N is determined by strict alignment across the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Coil voltage: 12VDC (mandatory match)
• Contact form: DPDT (2 Form C) (mandatory match)
• Contact rating: 2 A (mandatory match)
• Mounting type: Surface Mount (mandatory match)
• Termination style: Gull Wing (mandatory match)
• Coil type: Non Latching (mandatory match)
• Must operate voltage: 9 VDC (mandatory match)
• Must release voltage: 1.2 VDC (mandatory match)

Secondary Compatibility Parameters:

• Switching voltage: 220VDC minimum acceptable (D3526N supports 250VAC/220VDC maximum)
• Operating temperature: Minimum -40°C acceptable (D3526N operates -55°C to 85°C)
• Coil resistance: 720 Ohms preferred; 1.03 kOhms acceptable within circuit design tolerance
• Operate/Release time: 4-5 ms acceptable range

The three identified substitute parts (TX2SS-12V, TXD2SS-12V, TXD2SS-12V-Z) satisfy all primary substitution criteria and maintain compatibility across secondary parameters. All substitute parts are manufactured by Panasonic Electric Works and carry active product status.

Parameter Comparison

Engineering Selection Recommendations

TX2SS-12V Selection Criteria: TX2SS-12V is classified as a direct manufacturer equivalent with active product status. This part demonstrates full electrical compatibility with the D3526N across all primary substitution parameters. The TX2SS-12V exhibits reduced coil current (11.7 mA versus 16.7 mA) and higher coil resistance (1.03 kOhms versus 720 Ohms), resulting in lower power consumption during operation. The operating temperature range is constrained to -40°C to 85°C, which represents a narrower specification than the D3526N. TX2SS-12V carries ROHS3 compliance certification and is packaged in tube format. This part is suitable for applications where the -40°C minimum temperature threshold is acceptable and power efficiency is a design consideration.

TXD2SS-12V Selection Criteria: TXD2SS-12V is classified as a similar manufacturer equivalent with active product status. This part maintains identical electrical specifications to the D3526N, including coil current (16.7 mA) and coil resistance (720 Ohms). The TXD2SS-12V is designated as a general purpose relay rather than a telecom relay, though all switching and control parameters remain equivalent. The operating temperature range is -40°C to 85°C. This part carries RoHS compliance certification and is packaged in tube format. TXD2SS-12V is suitable for applications where the -40°C minimum temperature threshold is acceptable and coil current matching is required.

TXD2SS-12V-Z Selection Criteria: TXD2SS-12V-Z is classified as a similar manufacturer equivalent with active product status. This part is electrically identical to TXD2SS-12V, with matching coil current (16.7 mA) and coil resistance (720 Ohms). The primary distinction is packaging format: TXD2SS-12V-Z is supplied in Tape & Reel (TR) configuration, suitable for automated assembly processes. The operating temperature range is -40°C to 85°C. This part carries RoHS compliance certification. TXD2SS-12V-Z is suitable for high-volume production environments requiring automated component placement and where the -40°C minimum temperature threshold is acceptable.

All three substitute parts carry EAR99 export classification matching the D3526N. Selection between TX2SS-12V, TXD2SS-12V, and TXD2SS-12V-Z depends on application-specific requirements regarding coil current, packaging format, and minimum operating temperature tolerance.

Frequently Asked Questions (FAQ)

Q: Can TX2SS-12V be used as a direct replacement for D3526N in all applications?

A: TX2SS-12V satisfies all primary electrical substitution criteria. However, the reduced coil current (11.7 mA versus 16.7 mA) and higher coil resistance (1.03 kOhms versus 720 Ohms) require circuit design verification. The narrower operating temperature range (-40°C to 85°C versus -55°C to 85°C) eliminates this part from applications requiring operation below -40°C.

Q: What is the difference between TXD2SS-12V and TXD2SS-12V-Z?

A: TXD2SS-12V and TXD2SS-12V-Z are electrically and functionally identical. The difference is packaging: TXD2SS-12V is supplied in tube format for manual handling, while TXD2SS-12V-Z is supplied in Tape & Reel (TR) format for automated assembly equipment. Both parts carry identical electrical specifications and RoHS compliance.

Q: Are all substitute parts RoHS compliant?

A: Yes. TX2SS-12V carries ROHS3 compliance. TXD2SS-12V and TXD2SS-12V-Z carry RoHS compliance. All three substitute parts meet current environmental regulatory requirements.

Q: What is the impact of the -40°C minimum operating temperature on substitute part selection?

A: The D3526N operates from -55°C to 85°C. All three substitute parts operate from -40°C to 85°C. Applications requiring operation below -40°C cannot use these substitute parts. Applications operating within the -40°C to 85°C range are unaffected by this specification difference.

Q: Does the relay type designation (Telecom versus General Purpose) affect substitution?

A: The D3526N is designated as a telecom relay. TX2SS-12V is designated as a telecom relay. TXD2SS-12V and TXD2SS-12V-Z are designated as general purpose relays. All parts share identical electrical switching characteristics, contact form, and control parameters. The relay type designation reflects application category rather than functional incompatibility.

Q: What is the significance of the coil resistance difference between TX2SS-12V and the other substitutes?

A: TX2SS-12V has 1.03 kOhms coil resistance compared to 720 Ohms in the D3526N, TXD2SS-12V, and TXD2SS-12V-Z. This higher resistance results in lower coil current (11.7 mA versus 16.7 mA) and reduced power consumption. Circuit designs must accommodate this difference in coil impedance. The higher resistance may affect coil heating characteristics and response time in specific circuit topologies.

Q: Are all substitute parts sealed relays?

A: Yes. All three substitute parts (TX2SS-12V, TXD2SS-12V, TXD2SS-12V-Z) are rated as Sealed - Fully. The D3526N seal rating is not specified in the provided data.

Q: What export classification applies to these parts?

A: All parts, including the D3526N and all three substitutes, carry EAR99 export classification. No additional export licensing is required for these components.