T7CS1D-09 Equivalent & Substitute Parts

Part Overview

The T7CS1D-09 is a general purpose relay manufactured by TE Connectivity Potter & Brumfield Relays, configured as a Single Pole Single Throw Normally Open (SPST-NO) device with a 9VDC coil. This through-hole mounted relay is rated for 12A contact current and supports switching voltages up to 240VAC and 28VDC. The T7CS1D-09 is classified as obsolete, making identification of equivalent substitute parts essential for ongoing system maintenance, repair, and new design implementations where this relay specification is required.

Substiute Parts

T7CS1D-09

TE Connectivity Potter & Brumfield RelaysIn Stock: 949T7CS1D-09 Datasheet

Current PartRFQ

J1071AS9VDC.36

CIT Relay and SwitchIn Stock: 2759J1071AS9VDC.36 Datasheet

SimilarRFQ

JS1A-9V-F

Panasonic Electric WorksIn Stock: 2110JS1A-9V-F Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the T7CS1D-09 is determined by strict alignment of electrical and mechanical parameters. The following criteria establish substitution validity:

Primary Substitution Criteria:

• Coil voltage must be 9VDC
• Contact form must be SPST-NO (1 Form A)
• Mounting type must be Through Hole
• Termination style must be PC Pin
• Seal rating must be Sealed - Fully
• Coil type must be Non Latching
• Coil current must be 40 mA
• Coil resistance must be 225 Ohms

Secondary Compatibility Factors:

• Contact rating current must meet or exceed 12A
• Switching voltage capability must support the application requirements
• Operating temperature range must encompass the intended operating environment
• Must operate and release voltage specifications must be compatible with the control circuit

Both identified substitute parts meet all primary substitution criteria. Differences in contact rating current, switching voltage limits, operating temperature ranges, and contact material composition are noted in the parameter comparison table below.

Parameter Comparison

Engineering Selection Recommendations

J1071AS9VDC.36 (CIT Relay and Switch)

The J1071AS9VDC.36 is an active product with current manufacturing status, providing supply chain continuity for applications requiring the T7CS1D-09 specification. This substitute offers a higher contact rating of 15A, exceeding the 12A requirement of the main part. The operating temperature range extends to 125°C, providing broader environmental compatibility. The must release voltage is specified at 0.9VDC, which is higher than the main part's 0.45VDC specification. The release time is 10ms compared to the main part's 5ms. The switching voltage capability is limited to 125VAC and 30VDC, which is lower than the main part's 240VAC and 28VDC ratings. RoHS3 compliance is documented for this substitute.

JS1A-9V-F (Panasonic Electric Works)

The JS1A-9V-F is classified as obsolete, matching the product status of the main part. This substitute provides a contact rating of 10A, which is below the 12A requirement of the main part. The switching voltage capability extends to 250VAC and 100VDC, exceeding the main part's ratings. The operating temperature range is limited to -40°C to 70°C, which is narrower than the main part's -30°C to 85°C range. The must operate voltage is specified at 6.3VDC, which is lower than the main part's 6.75VDC. RoHS compliance is documented for this substitute.

Frequently Asked Questions (FAQ)

Q: Can the J1071AS9VDC.36 be used as a direct replacement for the T7CS1D-09?

A: The J1071AS9VDC.36 meets all primary substitution criteria including coil voltage, contact form, mounting type, termination style, seal rating, coil type, coil current, and coil resistance. The higher contact rating of 15A accommodates applications requiring 12A. However, the switching voltage capability is reduced to 125VAC and 30VDC compared to the main part's 240VAC and 28VDC. Applications operating at higher switching voltages require evaluation against the J1071AS9VDC.36 specifications.

Q: Is the JS1A-9V-F suitable for all applications using the T7CS1D-09?

A: The JS1A-9V-F meets primary substitution criteria but has a contact rating of 10A, which is below the main part's 12A specification. Applications requiring the full 12A contact rating cannot use this substitute. The operating temperature range of -40°C to 70°C is narrower than the main part's -30°C to 85°C range, limiting use in high-temperature environments above 70°C.

Q: What are the key differences in switching voltage capability between the substitutes?

A: The T7CS1D-09 supports 240VAC and 28VDC maximum switching voltage. The J1071AS9VDC.36 is rated for 125VAC and 30VDC, providing lower AC voltage capability but slightly higher DC voltage capability. The JS1A-9V-F supports 250VAC and 100VDC, exceeding both the main part and the other substitute in switching voltage capability.

Q: How do the release time specifications differ?

A: The T7CS1D-09 has a release time of 5ms. Both substitute parts specify a release time of 10ms, which is twice as long. Applications with timing-critical release requirements must account for this difference.

Q: What is the significance of the contact material difference?

A: The T7CS1D-09 uses Silver Cadmium Oxide (AgCdO) contact material. Both substitute parts use Silver Tin Oxide (AgSnO) contact material. Contact material composition affects electrical characteristics, contact resistance, and wear properties. Applications with specific contact material requirements must evaluate compatibility.

Q: Are there compliance or regulatory differences between the parts?

A: The J1071AS9VDC.36 is RoHS3 compliant and has active product status. The JS1A-9V-F is RoHS compliant and obsolete. The T7CS1D-09 is obsolete with REACH Unaffected status. All three parts are classified as EAR99 for export control purposes.

Q: What is the packaging difference between the substitutes?

A: The T7CS1D-09 is supplied in standard packaging. The J1071AS9VDC.36 is packaged in boxes. The JS1A-9V-F is supplied in bulk packaging. Packaging selection depends on inventory management and procurement requirements.