IDC24N DC Input Module - Equivalent & Substitute Parts

Part Overview

The IDC24N is a DC input module manufactured by Sensata-Crydom, designed to accept 10–48VDC supply voltage and deliver 24VDC output at 16mA. This module is classified as obsolete, making identification of suitable substitute components essential for ongoing system maintenance and new procurement planning. The module features hold-down screw mounting and operates with 8ms turn-on and 7ms turn-off response times.

Substiute Parts

IDC24N

Sensata-CrydomIn Stock: 722IDC24N Datasheet

Current PartRFQ

IDC24

Sensata-CrydomIn Stock: 1023IDC24 Datasheet

MFR RecommendedRFQ

70-IDC24NP

Grayhill Inc.In Stock: 100970-IDC24NP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IDC24N is determined by compatibility across the following critical parameters: output voltage (24VDC), output current capacity (16mA minimum), input voltage range overlap, input current draw, and mechanical form factor (hold-down screw mounting). Substitute parts must maintain the 24VDC output specification and support the required 16mA output current. Input voltage compatibility is evaluated based on whether the substitute accepts the operating range of the primary application.

Two substitute parts are identified:

IDC24 (Sensata-Crydom): Operates on fixed 24VDC input rather than the wide 10–48VDC range of the IDC24N. Classified as "Not For New Designs," this part maintains identical output specifications and mechanical mounting.

70-IDC24NP (Grayhill Inc.): Accepts both AC and DC input (15–32VAC, 10–32VDC), providing broader input flexibility. Classified as "Active" product status. Output current is reduced to 10mA, which is below the IDC24N specification of 16mA.

Parameter Comparison

Engineering Selection Recommendations

IDC24 (Sensata-Crydom): This substitute is suitable for applications where the input supply is fixed at 24VDC. The part maintains full output current capacity (16mA) and identical mechanical mounting. However, the product status "Not For New Designs" indicates this part is in end-of-life phase and should be considered only for legacy system maintenance. RoHS compliance status is favorable for regulated environments.

70-IDC24NP (Grayhill Inc.): This substitute offers active product status and broader input voltage flexibility, accepting both AC and DC inputs. The reduced output current specification (10mA versus 16mA) represents a functional limitation that must be evaluated against application requirements. RoHS non-compliance status may restrict use in regulated industries. This part is appropriate for applications requiring AC input capability or where the 10mA output current is sufficient.

Frequently Asked Questions (FAQ)

Q: Can IDC24 directly replace IDC24N in all applications? A: IDC24 is suitable only for applications where the input supply is fixed at 24VDC. The IDC24N accepts 10–48VDC input, so IDC24 cannot substitute in systems with variable or wide-range input voltage. Both parts deliver identical 24VDC output at 16mA and share the same mechanical form factor.

Q: What is the primary limitation of 70-IDC24NP as a substitute? A: The 70-IDC24NP delivers 10mA output current, compared to the IDC24N specification of 16mA. Applications requiring the full 16mA output current cannot use this substitute. The part is suitable only for loads drawing 10mA or less.

Q: Does 70-IDC24NP accept AC input like IDC24N? A: No. IDC24N is a DC-only input module. The 70-IDC24NP accepts both AC (15–32VAC) and DC (10–32VDC) input, providing additional flexibility not present in the original IDC24N design.

Q: Are there packaging differences between these parts? A: IDC24N is supplied in standard packaging with hold-down screw mounting. IDC24 is supplied in Tray packaging. 70-IDC24NP is supplied in Bulk packaging. All three parts feature identical hold-down screw mechanical mounting.

Q: Which substitute is recommended for new designs? A: Only 70-IDC24NP carries "Active" product status. However, the reduced output current (10mA) must be verified against application requirements. IDC24 is marked "Not For New Designs" and IDC24N is obsolete, making both unsuitable for new development unless legacy compatibility is mandatory.

Q: What are the compliance differences? A: IDC24 is RoHS Compliant. 70-IDC24NP is RoHS non-compliant. Applications subject to RoHS regulations must use IDC24 or verify exemption status for 70-IDC24NP. All three parts share identical ECCN (EAR99) and HTSUS (8536.41.0030) classifications.