C4OACAR AC Output Module Equivalent & Substitute Parts

Part Overview

The C4OACAR is an AC output module manufactured by Sensata Technologies, classified as part of the C4 series. This module provides 3A AC output capability with 12–280VAC output range and 4–32VDC input supply. The product is currently obsolete, making identification of functionally equivalent alternatives necessary for system maintenance, redesign, and procurement planning. Substitute parts must maintain electrical compatibility across input voltage, output voltage range, output current capacity, and switching characteristics.

Substiute Parts

C4OACAR

Sensata TechnologiesIn Stock: 909C4OACAR Datasheet

Current PartRFQ

84130105

Sensata-CrydomIn Stock: 74584130105 Datasheet

MFR RecommendedRFQ

70G-OAC5RLY

Grayhill Inc.In Stock: 94370G-OAC5RLY Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the C4OACAR are identified based on the following critical electrical and mechanical parameters:

• Input Voltage Range: Must accommodate 4–32VDC supply or be compatible within this envelope
• Output Voltage Range: Must support 12–280VAC output or equivalent AC voltage capability
• Output Current Capacity: Must provide minimum 3A output current
• Switching Speed: Turn-on and turn-off times must be compatible with system timing requirements
• Form Factor & Features: Physical mounting style, presence of fused protection, and status indication capability
• Product Status & Compliance: Active product status preferred for long-term availability; REACH and RoHS compliance noted where applicable

Two substitute parts meet these criteria with specific trade-offs in electrical characteristics and compliance posture.

Parameter Comparison

Engineering Selection Recommendations

84130105 (Sensata-Crydom): This part is the manufacturer-recommended substitute. It maintains identical input voltage range (4–32VDC) and output voltage range (12–280VAC) as the C4OACAR. Output current capacity is increased to 5A, providing margin above the original 3A specification. The part is active in production and ROHS3 compliant, supporting long-term supply chain stability. Turn-on time increases from 0.10 ms to 8.33 ms; this difference must be evaluated against system timing requirements. The part lacks the hold-down screw feature present in the original design.

70G-OAC5RLY (Grayhill Inc.): This part is an alternative substitute with identical 3A output current rating. It retains the hold-down screw and fused protection features of the C4OACAR. However, it operates on fixed 5VDC input supply rather than the 4–32VDC range, restricting its use to systems with dedicated 5V control power. Output voltage range extends to 0–110VDC in addition to AC capability. Turn-on and turn-off times are 11 ms, slower than both the original and the 84130105. The part is RoHS non-compliant. This substitute is suitable only for applications with 5VDC input availability and non-critical switching speed requirements.

Frequently Asked Questions (FAQ)

Q: Can the 84130105 directly replace the C4OACAR in all applications?

A: The 84130105 maintains electrical compatibility in input voltage range, output voltage range, and output current capacity. However, the turn-on time increases from 0.10 ms to 8.33 ms. Applications with strict timing requirements must verify that this switching delay is acceptable. The absence of a hold-down screw may require mechanical redesign depending on mounting configuration.

Q: What is the primary limitation of the 70G-OAC5RLY substitute?

A: The 70G-OAC5RLY requires a fixed 5VDC input supply, whereas the C4OACAR accepts 4–32VDC. This substitute is only viable for systems with dedicated 5V control power. Additionally, switching times are slower (11 ms vs. 0.10 ms turn-on), making it unsuitable for applications requiring fast response.

Q: Are there compliance differences between the substitutes?

A: The 84130105 is ROHS3 compliant, supporting modern regulatory requirements. The 70G-OAC5RLY is RoHS non-compliant. Both parts maintain REACH Unaffected status. For new designs or systems subject to RoHS requirements, the 84130105 is the preferred choice.

Q: Does the increased output current of the 84130105 (5A vs. 3A) create any compatibility issues?

A: No. Higher output current capacity is a superset of the original specification and does not create compatibility issues. The 84130105 can safely handle loads rated for 3A output.

Q: What packaging considerations apply to these substitutes?

A: The C4OACAR uses standard packaging (not specified). The 84130105 is supplied in bulk packaging with DIN Rail Mount style. The 70G-OAC5RLY is supplied in bulk packaging with G5 style form factor. Verify mechanical compatibility with the target application before selection.