T7CS1D-12 Equivalent & Substitute Parts

Part Overview

The T7CS1D-12 is a general purpose relay manufactured by TE Connectivity Potter & Brumfield Relays. This SPST-NO (1 Form A) relay operates on a 12VDC coil and is rated for 12A switching current at maximum switching voltages of 240VAC or 28VDC. The device features through-hole mounting with PC pin termination and is fully sealed with Class F coil insulation. The T7CS1D-12 maintains active product status with 5400 units in current inventory. Equivalent and substitute parts are identified to provide alternative sourcing options when the primary part becomes unavailable or when design requirements necessitate alternative component specifications within compatible electrical and mechanical parameters.

Substiute Parts

T7CS1D-12

TE Connectivity Potter & Brumfield RelaysIn Stock: 5488T7CS1D-12 Datasheet

Current PartRFQ

J1071AS12VDC.36

CIT Relay and SwitchIn Stock: 7489J1071AS12VDC.36 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the T7CS1D-12 with the J1071AS12VDC.36 is based on electrical and mechanical compatibility within the following critical parameters:

Matching Parameters:

• Coil voltage: 12VDC (identical)
• Contact form: SPST-NO (1 Form A) (identical)
• Mounting type: Through hole (identical)
• Termination style: PC pin (identical)
• Coil current: 30 mA (identical)
• Coil type: Non latching (identical)
• Seal rating: Sealed - fully (identical)
• Coil insulation: Class F (identical)
• Coil resistance: 400 Ohms (identical)

Allowable Variations:

• Contact rating current: 15A (substitute) versus 12A (main part) - higher rating provides equivalent or superior performance
• Switching voltage: 125VAC, 30VDC (substitute) versus 240VAC, 28VDC (main part) - substitute operates within compatible voltage ranges
• Operating temperature: -40°C ~ 125°C (substitute) versus -30°C ~ 85°C (main part) - extended range provides equivalent or superior performance
• Contact material: Silver Tin Oxide (substitute) versus Silver Cadmium Oxide (main part) - both materials provide equivalent switching performance

The J1071AS12VDC.36 functions as a direct substitute where the primary part is unavailable, with the understanding that the substitute part's higher current rating and extended temperature range do not compromise circuit compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the T7CS1D-12 and J1071AS12VDC.36 are active products suitable for general purpose relay applications requiring 12VDC coil operation and SPST-NO contact configuration.

T7CS1D-12 Selection Criteria:

• Primary choice when TE Connectivity Potter & Brumfield sourcing is specified
• Applications requiring 240VAC maximum switching voltage
• Designs operating within -30°C to 85°C temperature range
• RoHS compliance status is not a requirement

J1071AS12VDC.36 Selection Criteria:

• Alternative source when CIT Relay and Switch components are preferred
• Applications requiring extended operating temperature range (-40°C to 125°C)
• Designs requiring ROHS3 compliance and REACH unaffected status
• Applications where 15A contact rating provides design margin above 12A requirement
• Designs operating at 125VAC or 30VDC maximum switching voltages

Both parts share identical coil voltage, contact form, mounting type, termination style, coil current, and coil resistance specifications. The substitute part provides higher current rating and extended temperature range without compromising circuit compatibility.

Frequently Asked Questions (FAQ)

Q: Can the J1071AS12VDC.36 directly replace the T7CS1D-12 in existing designs?

A: Yes. Both relays share identical coil voltage (12VDC), contact form (SPST-NO), mounting type (through hole), termination style (PC pin), coil current (30 mA), and coil resistance (400 Ohms). The substitute part's higher current rating (15A versus 12A) and extended temperature range do not prevent direct substitution in circuits designed for the T7CS1D-12.

Q: What are the differences in switching voltage ratings between these parts?

A: The T7CS1D-12 is rated for 240VAC or 28VDC maximum switching voltage. The J1071AS12VDC.36 is rated for 125VAC or 30VDC maximum switching voltage. Circuit designs operating at or below 125VAC or 30VDC are compatible with both parts. Designs requiring 240VAC switching capability must use the T7CS1D-12.

Q: How do the operating temperature ranges differ?

A: The T7CS1D-12 operates from -30°C to 85°C. The J1071AS12VDC.36 operates from -40°C to 125°C. The substitute part provides a wider temperature range suitable for applications requiring extended low-temperature or high-temperature operation.

Q: Are there differences in release time between these relays?

A: Yes. The T7CS1D-12 has a 5 ms release time, while the J1071AS12VDC.36 has a 10 ms release time. Both parts share a 10 ms operate time. Applications with strict release time requirements below 10 ms must use the T7CS1D-12.

Q: What is the difference in contact material between these parts?

A: The T7CS1D-12 uses Silver Cadmium Oxide (AgCdO) contact material. The J1071AS12VDC.36 uses Silver Tin Oxide (AgSnO) contact material. Both materials provide equivalent switching performance for general purpose relay applications.

Q: Do both parts meet the same compliance standards?

A: The J1071AS12VDC.36 is ROHS3 compliant and REACH unaffected. The T7CS1D-12 has not applicable RoHS status and vendor undefined REACH status. Designs requiring ROHS3 compliance and REACH unaffected certification must use the J1071AS12VDC.36.

Q: What is the packaging difference between these parts?

A: The T7CS1D-12 packaging is listed as a dash (-), indicating standard packaging. The J1071AS12VDC.36 is packaged in a box. Both parts are through-hole mounted with PC pin termination suitable for printed circuit board assembly.