TE Connectivity J1MSC-12XM General Purpose Relay SPDT Equivalent & Substitute Parts

Part Overview

The J1MSC-12XM is a general purpose relay manufactured by TE Connectivity Aerospace, Defense and Marine. This SPDT (Single Pole Double Throw) relay operates at 12VDC with a 1 ampere contact rating and is designed for through-hole mounting applications. The component is hermetically sealed and rated for operating temperatures from -65°C to 125°C.

The J1MSC-12XM maintains active product status with 1063 units in current inventory. Substitute parts are identified to provide design flexibility, inventory alternatives, and continuity of supply for applications requiring equivalent electrical and mechanical performance.

Substiute Parts

J1MSC-12XM

TE Connectivity Aerospace, Defense and MarineIn Stock: 1076J1MSC-12XM Datasheet

Current PartRFQ

J1MSC-12XL

TE Connectivity Aerospace, Defense and MarineIn Stock: 933J1MSC-12XL Datasheet

Parametric EquivalentRFQ

J1MSP-12XM

TE Connectivity Aerospace, Defense and MarineIn Stock: 765J1MSP-12XM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the J1MSC-12XM are identified based on electrical and mechanical parameter equivalence. The substitution criteria are:

Critical Matching Parameters:

• Coil Voltage: 12VDC
• Contact Form: SPDT (1 Form C)
• Contact Rating (Current): 1 A
• Switching Voltage: 115VAC, 28VDC - Max
• Coil Current: 11.7 mA
• Coil Type: Non Latching
• Mounting Type: Through Hole
• Termination Style: PC Pin
• Seal Rating: Sealed - Hermetically
• Operating Temperature Range: -65°C ~ 125°C
• Contact Material: Silver Palladium (AgPd), Gold (Au)
• Coil Resistance: 1.025 kOhms
• Must Operate Voltage: 7 VDC
• Must Release Voltage: 0.63 VDC
• Operate Time: 4 ms
• Release Time: 2.5 ms

All substitute parts listed maintain identical electrical performance characteristics and mechanical compatibility with the main part number J1MSC-12XM.

Parameter Comparison

Engineering Selection Recommendations

All three parts—J1MSC-12XM, J1MSC-12XL, and J1MSP-12XM—are active products manufactured by TE Connectivity Aerospace, Defense and Marine. Each part maintains identical electrical specifications, mechanical compatibility, and environmental ratings.

Compliance and Certification Status: All substitute parts share the same regulatory profile: RoHS non-compliant, REACH Unaffected, and ECCN classification EAR99. Moisture Sensitivity Level is 1 (Unlimited) for all parts, indicating no special handling requirements during storage or assembly.

Inventory Availability: Selection between substitute parts may be based on current inventory levels. The J1MSC-12XM maintains the highest inventory at 1063 units. The J1MSC-12XL provides 857 units, and the J1MSP-12XM provides 687 units in stock.

Functional Equivalence: All parts are functionally interchangeable within applications requiring a 12VDC general purpose SPDT relay with 1 ampere contact rating, through-hole mounting, and hermetic sealing. No performance degradation or functional limitation occurs when substituting between these part numbers.

Frequently Asked Questions (FAQ)

Q: Are the J1MSC-12XL and J1MSP-12XM direct substitutes for the J1MSC-12XM?

A: Yes. Both parts maintain identical electrical specifications, including coil voltage, contact form, current rating, switching voltage, coil current, operating temperature range, and timing characteristics. Both are hermetically sealed, through-hole mounted components with PC pin termination and equivalent contact materials.

Q: What is the difference between J1MSC-12XL and J1MSP-12XM?

A: The parts differ only in base product number designation (J1MSC versus J1MSP). All electrical and mechanical parameters are identical. The HTSUS classification differs slightly between J1MSC-12XL (8536.41.0020) and J1MSP-12XM (8536.41.0050), reflecting tariff classification variations.

Q: Can these relays be used interchangeably in existing circuit board designs?

A: Yes. All three parts feature identical through-hole PC pin termination, mounting type, and physical seal rating. No circuit board redesign or layout modification is required when substituting between J1MSC-12XM, J1MSC-12XL, and J1MSP-12XM.

Q: What are the critical operating parameters for this relay family?

A: The critical parameters are 12VDC coil voltage, 1 ampere contact rating, SPDT contact form, 7 VDC must-operate voltage, 0.63 VDC must-release voltage, 4 millisecond operate time, and 2.5 millisecond release time. All substitute parts maintain these specifications.

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

A: No. All parts share identical RoHS status (non-compliant), REACH status (Unaffected), ECCN classification (EAR99), and Moisture Sensitivity Level (1 - Unlimited). No compliance restrictions apply to substitution between these part numbers.

Q: What is the operating temperature range for these relays?

A: All parts operate across -65°C to 125°C. This range applies to both coil and contact performance. The hermetic seal rating ensures consistent operation throughout this temperature span.

Q: Can these relays handle the specified switching voltage in all applications?

A: The maximum switching voltage is 115VAC or 28VDC. Applications must not exceed these voltage levels. The 1 ampere contact rating applies at these maximum switching voltages.