C4IACA AC Input Module 240V Equivalent & Substitute Parts

Part Overview

The C4IACA is an AC input module manufactured by Sensata-Crydom, designed to interface 240VAC signals with 4.5–30VDC output systems. This module accepts 240VAC input at 5mA and provides a 25mA output signal suitable for logic-level control applications. The product is classified as obsolete, making identification of compatible substitute parts essential for system maintenance and new design implementations where equivalent functionality is required.

Substiute Parts

C4IACA

Sensata-CrydomIn Stock: 789C4IACA Datasheet

Current PartRFQ

70G-IAC5A

Grayhill Inc.In Stock: 106670G-IAC5A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The 70G-IAC5A from Grayhill Inc. is identified as a manufacturer-recommended substitute for the C4IACA. Substitution eligibility is determined by the following critical parameters:

• Input Voltage Compatibility: Both modules accept 240VAC input, meeting the primary interface requirement.
• Input Current: The C4IACA draws 5mA; the 70G-IAC5A draws 6mA. This 1mA difference falls within acceptable tolerance for AC input modules in this category.
• Output Voltage Range: The C4IACA provides 4.5–30VDC output; the 70G-IAC5A provides fixed 5VDC output. The 5VDC output is within the C4IACA's output range, making it suitable for applications requiring 5VDC logic-level signals.
• Output Current: The C4IACA delivers 25mA; the 70G-IAC5A delivers 10mA. Applications requiring the full 25mA output capacity must evaluate whether 10mA is sufficient for the connected load.
• Switching Characteristics: Both modules exhibit identical 20ms turn-on and turn-off times, ensuring equivalent response behavior.
• Physical Features: Both include hold-down screws and status LEDs, supporting identical mechanical integration.

Parameter Comparison

Engineering Selection Recommendations

The 70G-IAC5A is an active product from Grayhill Inc., providing supply continuity for applications currently using the obsolete C4IACA. The substitute maintains functional equivalence for 240VAC input detection with 20ms switching response.

Selection of the 70G-IAC5A requires verification that the application load does not exceed 10mA output current. The C4IACA's variable output voltage range (4.5–30VDC) accommodates diverse downstream logic families; the 70G-IAC5A's fixed 5VDC output is suitable for standard TTL and CMOS logic levels.

The 70G-IAC5A is RoHS non-compliant. Applications subject to RoHS requirements must evaluate alternative sources or obtain RoHS exemption documentation.

Both modules share identical MSL classification (1 – Unlimited), supporting equivalent handling and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can the 70G-IAC5A directly replace the C4IACA in all applications?

A: Direct replacement is possible when the application load current does not exceed 10mA and the 5VDC output voltage is compatible with the downstream circuit. Applications requiring variable output voltage selection or output currents above 10mA require circuit redesign or alternative substitute evaluation.

Q: What is the significance of the 1mA input current difference between the two modules?

A: The C4IACA draws 5mA input current; the 70G-IAC5A draws 6mA. This difference is negligible in most 240VAC input circuits and does not affect substitution eligibility. Verify that the AC source can supply the additional 1mA if operating at current limits.

Q: Why is the 70G-IAC5A listed as RoHS non-compliant?

A: The 70G-IAC5A does not meet RoHS (Restriction of Hazardous Substances) requirements. Applications in regulated markets requiring RoHS compliance must confirm exemption applicability or identify alternative compliant sources.

Q: Are the packaging formats compatible?

A: The C4IACA packaging is specified as "-" (not detailed); the 70G-IAC5A is supplied in Bulk packaging. Verify mechanical fit and mounting compatibility with the target application before procurement.

Q: Do both modules provide status indication?

A: Yes. Both the C4IACA and 70G-IAC5A include status LED(s) and hold-down screws, supporting identical visual feedback and mechanical integration.