IDC5F DC Input Module - Equivalent & Substitute Parts

Part Overview

The IDC5F is a DC input module manufactured by Sensata-Crydom, designed to convert DC supply voltages in the 4–32VDC range to a standardized 5VDC output at 16mA. This module is classified as an active product and is RoHS compliant. DC input modules are essential components in industrial control systems, signal conditioning circuits, and isolation applications where regulated low-voltage outputs are required from higher DC supply voltages. Substitute parts may be required due to inventory constraints, end-of-life considerations, or specific application requirements.

Substiute Parts

IDC5F

Sensata-CrydomIn Stock: 768IDC5F Datasheet

Current PartRFQ

70-IDC5B

Grayhill Inc.In Stock: 86770-IDC5B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IDC5F is determined by the following critical parameters:

• Input voltage range compatibility (minimum and maximum input voltage specifications)
• Output voltage specification (5VDC required)
• Output current capability (minimum 16mA required)
• Response time characteristics (turn-on and turn-off times)
• Physical form factor and mounting compatibility (hold-down screw feature)
• Packaging type (Bulk)

A substitute part must maintain functional equivalence across these parameters to ensure direct replacement without circuit redesign or system reconfiguration.

Parameter Comparison

Engineering Selection Recommendations

The 70-IDC5B (Grayhill Inc.) is functionally compatible with the IDC5F for applications requiring DC input module functionality with 5VDC output. The substitute part meets or exceeds the output current requirement (18mA vs. 16mA) and demonstrates equivalent or superior response time characteristics.

However, the following factors must be considered during selection:

• The IDC5F is RoHS compliant, while the 70-IDC5B is RoHS non-compliant. Applications subject to RoHS regulatory requirements must retain the IDC5F or identify an alternative RoHS-compliant substitute.
• The 70-IDC5B operates with a lower input current specification (18mA vs. 68mA), which may indicate improved power efficiency in the supply circuit.
• The 70-IDC5B accepts a lower minimum input voltage (3VDC vs. 4VDC), providing broader operational range in low-voltage supply scenarios.

Selection should be based on regulatory compliance requirements, supply chain availability, and specific application voltage and current constraints.

Frequently Asked Questions (FAQ)

Q: Can the 70-IDC5B directly replace the IDC5F in all applications?

A: The 70-IDC5B is functionally compatible for applications where RoHS compliance is not a regulatory requirement. Both modules provide 5VDC output with equivalent or superior performance characteristics. However, applications subject to RoHS directives must use the RoHS-compliant IDC5F or identify an alternative compliant substitute.

Q: What is the significance of the input current difference between these modules?

A: The IDC5F requires 68mA input current, while the 70-IDC5B requires only 18mA. This difference reflects the internal design and efficiency characteristics of each module. The lower input current of the 70-IDC5B may reduce power dissipation in the supply circuit, but both modules deliver the required 5VDC output within specified current limits.

Q: Are the response times equivalent?

A: Turn-on time is identical at 0.05ms. Turn-off time differs slightly: the IDC5F turns off in 0.10ms, while the 70-IDC5B turns off in 0.075ms. For most industrial control applications, this difference is negligible. Applications with strict timing requirements should verify compatibility with the specific turn-off characteristic.

Q: Do both modules use the same packaging?

A: Yes, both the IDC5F and 70-IDC5B are supplied in Bulk packaging and feature identical hold-down screw mounting. Physical form factor compatibility is confirmed.

Q: What should I consider when selecting between these modules?

A: Primary selection criteria are regulatory compliance (RoHS status), supply voltage range requirements (3VDC minimum vs. 4VDC minimum), and output current demand (both exceed 16mA requirement). Verify that your application's regulatory environment permits use of non-RoHS-compliant components if considering the 70-IDC5B.