C4OACR AC Output Module Equivalent & Substitute Parts

Part Overview

The C4OACR is an AC output module manufactured by Sensata-Crydom, designed to switch AC loads with a 3A output capacity. This module accepts 4–32VDC input supply and delivers 12–140VAC output. The product is classified as obsolete, making identification of functionally equivalent alternatives necessary for system maintenance, redesign, and procurement planning.

Substiute Parts

C4OACR

Sensata-CrydomIn Stock: 866C4OACR 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

Substitution of the C4OACR is determined by compatibility across the following critical parameters:

• Input voltage range (4–32VDC supply compatibility)
• Output current capacity (minimum 3A)
• Output voltage range (minimum 12–140VAC coverage)
• Switching speed characteristics (turn-on and turn-off times)
• Physical form factor and mounting compatibility
• Feature set (fused output, status indication, hold-down mechanism)

Two substitute parts are identified based on these criteria:

84130105 (Sensata-Crydom): Manufacturer-recommended substitute with higher output current capacity (5A) and extended output voltage range (12–280VAC). Maintains identical input voltage range and input current draw. Switching times are equivalent. Active product status ensures ongoing availability.

70G-OAC5RLY (Grayhill Inc.): Alternative substitute with identical 3A output current and extended output voltage range (0–250VAC, 0–110VDC). Operates on 5VDC input supply, requiring input voltage adjustment in the application circuit. Switching times are slightly longer (11 ms). Active product status and fused output with status LED features provide functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

84130105 (Sensata-Crydom): This is the manufacturer-recommended substitute and represents the primary replacement path for the obsolete C4OACR. It maintains the same input voltage range (4–32VDC) and input current specification (22 mA), ensuring direct compatibility with existing power supply circuits. The higher output current rating (5A versus 3A) and extended output voltage range (12–280VAC) provide enhanced capability without reducing performance. Active product status guarantees long-term availability and supply chain continuity. RoHS3 compliance supports modern regulatory requirements.

70G-OAC5RLY (Grayhill Inc.): This alternative substitute is suitable when cross-manufacturer sourcing is acceptable. It matches the original 3A output current and provides extended output voltage coverage. The primary design consideration is the fixed 5VDC input requirement, which differs from the C4OACR's 4–32VDC range. This necessitates input voltage regulation or circuit modification. Switching times are longer (11 ms versus 0.10 ms turn-on), which may affect application timing requirements. The part retains fused output and status LED features. Active product status and REACH compliance support procurement viability.

Frequently Asked Questions (FAQ)

Q: Can the 84130105 be used as a direct replacement for the C4OACR?

A: Yes. The 84130105 maintains identical input voltage range (4–32VDC) and input current (22 mA), enabling direct substitution in existing circuits. The higher output current capacity (5A) and extended output voltage range (12–280VAC) are backward-compatible with applications designed for the C4OACR's 3A, 12–140VAC specification.

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

A: The 70G-OAC5RLY operates on a fixed 5VDC input supply, whereas the C4OACR accepts 4–32VDC. Applications using variable input voltage or higher supply voltages require input voltage regulation or circuit redesign to use this part. Additionally, switching times are longer (11 ms versus 0.10 ms turn-on).

Q: Are both substitutes compatible with the original C4OACR mounting and packaging?

A: The 84130105 uses DIN Rail Mount style and differs in physical form factor from the C4OACR's C4 series style. The 70G-OAC5RLY uses G5 style mounting. Mechanical compatibility must be verified against the specific application's mounting requirements and available space.

Q: Which substitute is recommended for new designs?

A: The 84130105 is recommended for new designs due to its active product status, manufacturer recommendation, RoHS3 compliance, and direct input voltage compatibility. The 70G-OAC5RLY is suitable as an alternative when cross-manufacturer sourcing is required and input voltage can be regulated to 5VDC.

Q: Do both substitutes retain the fused output feature of the C4OACR?

A: The 84130105 does not list fused output in its feature set. The 70G-OAC5RLY retains the fused output feature. If fused output is a critical requirement, the 70G-OAC5RLY is the appropriate choice, or external fusing must be added to the 84130105 circuit.

Q: What is the inventory status of these substitutes?

A: The 84130105 has 721 pieces in stock. The 70G-OAC5RLY has 876 pieces in stock. Both are available for immediate procurement.