D3525N Equivalent & Substitute Parts

Part Overview

The D3525N is a telecom relay manufactured by TE Connectivity Potter & Brumfield Relays, classified as a DPDT (2 Form C) surface mount component with a 9VDC coil voltage and 2A contact rating. This part operates in the FU2 and AXICOM series and features palladium, ruthenium, and gold contact materials. The D3525N is designated as obsolete, necessitating identification of active equivalent and substitute parts for ongoing applications requiring DPDT relay functionality at 9VDC with 2A switching capacity.

Key Parameters

Parameter	Value
Coil Voltage	9VDC
Contact Form	DPDT (2 Form C)
Contact Rating (Current)	2 A
Mounting Type	Surface Mount
Termination Style	Gull Wing
Must Operate Voltage	6.75 VDC
Must Release Voltage	0.9 VDC
Coil Type	Non Latching
Operating Temperature Range	-55°C ~ 85°C

Substitute Part Grouping Explanation

Substitute parts for the D3525N are identified based on strict electrical and mechanical parameter alignment. The primary substitution criteria are:

Critical Matching Parameters:

Coil voltage: 9VDC
Contact form: DPDT (2 Form C)
Contact rating: 2 A minimum
Mounting type: Surface Mount
Termination style: Gull Wing
Must operate voltage: 6.75 VDC
Must release voltage: 0.9 VDC
Coil type: Non Latching

Substitute Classification:

Direct Manufacturer Substitute (TX2SS-9V): Panasonic Electric Works TX2SS-9V meets all critical electrical parameters and mounting specifications. This telecom relay maintains identical coil voltage, contact form, current rating, and switching characteristics. The part is active and available.

Similar Manufacturer Substitute (TXD2SS-9V): Panasonic Electric Works TXD2SS-9V satisfies all critical electrical and mechanical parameters. Classified as a general purpose relay rather than telecom-specific, this part maintains identical coil voltage, contact form, current rating, and operating voltage thresholds. The part is active and available.

Parameter Comparison

Parameter	D3525N (Main Part)	TX2SS-9V (Direct Substitute)	TXD2SS-9V (Similar Substitute)
Manufacturer	TE Connectivity Potter & Brumfield	Panasonic Electric Works	Panasonic Electric Works
Product Status	Obsolete	Active	Active
Coil Voltage	9VDC	9VDC	9VDC
Contact Form	DPDT (2 Form C)	DPDT (2 Form C)	DPDT (2 Form C)
Contact Rating (Current)	2 A	2 A	2 A
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Termination Style	Gull Wing	Gull Wing	Gull Wing
Switching Voltage (Max)	250VAC, 220VDC	220VDC	220VDC
Coil Current	22.2 mA	15.5 mA	22.2 mA
Coil Resistance	405 Ohms	579 Ohms	405 Ohms
Must Operate Voltage	6.75 VDC	6.75 VDC	6.75 VDC
Must Release Voltage	0.9 VDC	0.9 VDC	0.9 VDC
Operate Time	5 ms	4 ms	4 ms
Release Time	5 ms	4 ms	4 ms
Operating Temperature Range	-55°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Contact Material	Palladium (Pd), Ruthenium (Ru), Gold (Au)	Silver (Ag), Gold (Au)	Silver (Ag), Gold (Au)
Seal Rating	Not specified	Sealed - Fully	Sealed - Fully
Coil Type	Non Latching	Non Latching	Non Latching
Relay Type	Telecom	Telecom	General Purpose
RoHS Status	Not specified	RoHS Compliant	RoHS Compliant
ECCN	EAR99	EAR99	EAR99

Engineering Selection Recommendations

TX2SS-9V Selection Criteria:

The TX2SS-9V is classified as a direct manufacturer substitute. This Panasonic Electric Works telecom relay maintains active product status and RoHS compliance. The part satisfies all critical electrical parameters including 9VDC coil voltage, DPDT contact form, 2A current rating, and identical operating voltage thresholds. The TX2SS-9V exhibits lower coil current (15.5 mA versus 22.2 mA) and higher coil resistance (579 Ohms versus 405 Ohms), resulting in reduced power consumption. Operating temperature range is -40°C to 85°C, which covers the upper operating limit of the D3525N but does not extend to the lower -55°C threshold. Switching voltage is limited to 220VDC maximum, compared to the D3525N specification of 250VAC and 220VDC. The TX2SS-9V includes full sealing and RoHS compliance certification.

TXD2SS-9V Selection Criteria:

The TXD2SS-9V is classified as a similar manufacturer substitute. This Panasonic Electric Works general purpose relay maintains active product status and RoHS compliance. The part satisfies all critical electrical parameters including 9VDC coil voltage, DPDT contact form, 2A current rating, and identical operating voltage thresholds. The TXD2SS-9V maintains coil current and resistance specifications identical to the D3525N (22.2 mA and 405 Ohms respectively). Operating temperature range is -40°C to 85°C, which covers the upper operating limit of the D3525N but does not extend to the lower -55°C threshold. Switching voltage is limited to 220VDC maximum. The TXD2SS-9V includes full sealing and RoHS compliance certification. Classification as general purpose rather than telecom-specific may be relevant for application-specific requirements.

Compliance Considerations:

Both substitute parts carry EAR99 export classification and RoHS compliance status, matching the regulatory framework of the D3525N. Both parts are packaged in tubes and are available in active inventory.

Frequently Asked Questions (FAQ)

Q: Can TX2SS-9V directly replace D3525N in all applications?

A: TX2SS-9V satisfies all critical electrical and mechanical parameters for DPDT relay functionality at 9VDC with 2A switching. However, the operating temperature range differs: TX2SS-9V operates from -40°C to 85°C, while D3525N operates from -55°C to 85°C. Applications requiring operation below -40°C require evaluation of alternative solutions. Switching voltage is limited to 220VDC maximum on TX2SS-9V compared to D3525N specification of 250VAC and 220VDC.

Q: What is the difference between TX2SS-9V and TXD2SS-9V?

A: Both parts meet identical critical electrical parameters. TX2SS-9V is classified as a telecom relay with lower coil current (15.5 mA) and higher coil resistance (579 Ohms). TXD2SS-9V is classified as a general purpose relay with coil specifications matching the D3525N (22.2 mA and 405 Ohms). Selection between these parts depends on application classification and power consumption requirements.

Q: Are there packaging differences between substitute parts?

A: Both TX2SS-9V and TXD2SS-9V are supplied in tube packaging. The D3525N packaging specification is not provided in the reference data. Both substitute parts feature gull wing termination style matching the D3525N.

Q: Do substitute parts include sealing specifications?

A: Both TX2SS-9V and TXD2SS-9V are rated as sealed fully. The D3525N seal rating is not specified in the reference data. Applications requiring specific sealing performance should evaluate this parameter against functional requirements.

Q: What is the impact of coil resistance differences?

A: TX2SS-9V exhibits 579 Ohms coil resistance compared to D3525N at 405 Ohms, resulting in lower coil current draw (15.5 mA versus 22.2 mA). TXD2SS-9V maintains 405 Ohms coil resistance matching the D3525N. Lower coil current reduces power consumption and heat generation. Circuit designs must accommodate the coil resistance value of the selected substitute part.

Q: Are substitute parts RoHS compliant?

A: Both TX2SS-9V and TXD2SS-9V carry RoHS compliance certification. The D3525N RoHS status is not specified. Applications subject to RoHS requirements are satisfied by either substitute part.

Q: What contact material differences exist?

A: D3525N features palladium, ruthenium, and gold contact materials. Both TX2SS-9V and TXD2SS-9V feature silver and gold contact materials. Contact material selection affects switching characteristics, contact resistance, and application suitability. Applications with specific contact material requirements should evaluate this parameter.

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