M-IDC24 DC Input Module Equivalent & Substitute Parts

Part Overview

The M-IDC24 is a DC input module manufactured by Sensata-Crydom, designed to accept 24VDC input signals and provide 24VDC output at 16mA capacity. This module operates with 34mA input current and features 1ms turn-on and turn-off response times. The product is classified as "Not For New Designs," indicating it has reached end-of-life status. Identifying equivalent substitute parts is necessary for ongoing system maintenance, legacy equipment support, and design continuity where this module is currently deployed.

Substiute Parts

M-IDC24

Sensata-CrydomIn Stock: 1104M-IDC24 Datasheet

Current PartRFQ

70M-IDC24

Grayhill Inc.In Stock: 75470M-IDC24 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of DC input modules is determined by compatibility across the following critical parameters:

Output Voltage and Current: The substitute must provide 24VDC output at a minimum of 16mA to maintain functional equivalence with the M-IDC24.

Input Voltage Range: The substitute must accept the 24VDC input signal. Modules with wider input voltage ranges (such as 3–32VDC) are acceptable as they encompass the 24VDC requirement.

Input Current: The substitute's input current specification must not exceed system power supply limitations. The M-IDC24 draws 34mA; substitutes with lower input current requirements are compatible.

Response Time: Turn-on and turn-off times must be suitable for the application's timing requirements. Faster response times are acceptable; slower times may impact system performance.

Form Factor and Packaging: Mini-style modules are interchangeable. Packaging format (Tray vs. Bulk) affects procurement and handling but does not affect functional compatibility.

Compliance and Status: RoHS compliance and product status inform suitability for new deployments versus legacy system support.

Parameter Comparison

Engineering Selection Recommendations

For Legacy System Replacement: The 70M-IDC24 (Grayhill Inc.) is a functional substitute for the M-IDC24. Both modules provide 24VDC output and accept 24VDC input signals within their respective input ranges. The 70M-IDC24 features faster response times (0.20ms turn-on, 0.40ms turn-off versus 1ms for the M-IDC24) and lower input current draw (18mA versus 34mA), reducing power supply load.

Output Current Consideration: The 70M-IDC24 provides 10mA output current compared to the M-IDC24's 16mA. Applications requiring the full 16mA output capacity must verify that 10mA is sufficient for downstream components before substitution.

Compliance Status: The M-IDC24 is RoHS Compliant, while the 70M-IDC24 is RoHS non-compliant. For applications subject to RoHS requirements, this distinction must be evaluated against regulatory and procurement policies.

Product Lifecycle: The M-IDC24 is designated "Not For New Designs," whereas the 70M-IDC24 is Active. For ongoing production or new system designs, the 70M-IDC24 is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can the 70M-IDC24 directly replace the M-IDC24 in existing systems?

A: The 70M-IDC24 is functionally compatible for applications where 10mA output current is sufficient. Both modules provide 24VDC output and accept 24VDC input. Verify that downstream components do not require the additional 6mA output capacity of the original M-IDC24.

Q: Why does the 70M-IDC24 have a wider input voltage range (3–32VDC) than the M-IDC24 (24VDC)?

A: The 70M-IDC24 is designed for broader application flexibility, accepting input voltages from 3V to 32V. When operated at 24VDC input, it functions identically to the M-IDC24 within that voltage point. The wider range does not affect compatibility at 24VDC.

Q: What is the impact of the 70M-IDC24's faster response times?

A: The 70M-IDC24 turns on in 0.20ms and off in 0.40ms, compared to 1ms for both transitions on the M-IDC24. Faster response times improve signal fidelity and system responsiveness. Applications with timing-critical requirements benefit from this improvement; no negative impact occurs in systems designed for the M-IDC24's response profile.

Q: Does the lower input current of the 70M-IDC24 affect compatibility?

A: No. The 70M-IDC24 requires only 18mA input current versus 34mA for the M-IDC24. This reduces power supply load and is advantageous for systems with limited power budgets. Compatibility is maintained.

Q: What is the significance of RoHS compliance differences?

A: The M-IDC24 is RoHS Compliant; the 70M-IDC24 is RoHS non-compliant. RoHS compliance is mandatory for products sold into the European Union and for many regulated industries. Substitution decisions must account for applicable regulatory requirements and procurement policies.

Q: Are there packaging differences between these modules?

A: The M-IDC24 is supplied in Tray packaging, while the 70M-IDC24 is supplied in Bulk packaging. Packaging affects procurement quantities, handling, and storage but does not impact electrical or mechanical compatibility.