OSSRA0009A Solid State Relay - Equivalent & Substitute Parts

Part Overview

The OSSRA0009A is a solid state relay (SSR) manufactured by TT Electronics/Optek Technology, configured as a SPST-NO (1 Form A) device in a Hockey Puck package. This component is designed for AC load switching applications with a 25A capacity across a 50V to 250V load range. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations.

Substiute Parts

OSSRA0009A

TT Electronics/Optek TechnologyIn Stock: 967OSSRA0009A Datasheet

Current PartRFQ

84134111

Sensata-CrydomIn Stock: 116284134111 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OSSRA0009A is determined by the following critical parameters:

• Circuit Configuration: Must be SPST-NO (1 Form A) to maintain identical switching topology
• Output Type: Must be AC with Zero Cross capability to preserve load control characteristics
• Load Current Rating: Must be rated for 25A minimum
• Load Voltage Range: Must accommodate the 50V to 250V operating window
• Input Voltage Range: Must accept 100 ~ 240VAC control signal
• Package / Case: Must be Hockey Puck format for mechanical compatibility
• Termination Style: Must use Screw Terminal for connection compatibility
• Mounting Type: Must support Chassis Mount installation

The substitute part 84134111 (Sensata-Crydom GN series) meets all these criteria with extended voltage and current capabilities, making it functionally compatible for the OSSRA0009A application.

Parameter Comparison

Engineering Selection Recommendations

The 84134111 (Sensata-Crydom GN series) is the designated substitute for the obsolete OSSRA0009A. This selection is based on:

• Active Product Status: The 84134111 is an active product with current manufacturing support, ensuring long-term availability and supply chain continuity
• Regulatory Compliance: Both parts maintain ROHS3 compliance, satisfying environmental and regulatory requirements
• Functional Equivalence: All critical electrical parameters (circuit configuration, output type, load current, input voltage, load voltage range) are matched or exceeded
• Mechanical Compatibility: Identical Hockey Puck package and Screw Terminal configuration ensure direct mechanical substitution without redesign
• Extended Operating Range: The 84134111 provides broader input voltage (90 ~ 280VAC vs. 100 ~ 240VAC) and load voltage (48V ~ 660V vs. 50V ~ 250V) ranges, offering enhanced flexibility for existing and future applications

Frequently Asked Questions (FAQ)

Q: Can the 84134111 be used as a direct replacement for the OSSRA0009A?

A: Yes. The 84134111 meets all functional and mechanical requirements for direct substitution. Both parts share identical circuit configuration (SPST-NO), output type (AC, Zero Cross), load current rating (25A), package format (Hockey Puck), and termination style (Screw Terminal).

Q: What are the key differences between these two parts?

A: The primary differences are product status and operating ranges. The OSSRA0009A is obsolete, while the 84134111 is an active product. The 84134111 provides extended input voltage tolerance (90 ~ 280VAC vs. 100 ~ 240VAC) and significantly higher maximum load voltage capability (48V ~ 660V vs. 50V ~ 250V).

Q: Will the 84134111 work in applications designed for the OSSRA0009A?

A: Yes. The 84134111 is fully compatible with all applications originally designed for the OSSRA0009A. The extended operating ranges of the 84134111 provide additional margin and flexibility without compromising performance in the original application envelope.

Q: Are there any compliance or certification differences?

A: Both parts are ROHS3 compliant. The 84134111 carries REACH Affected status, while the OSSRA0009A is REACH Unaffected. This distinction reflects regulatory classification differences but does not affect functional compatibility or performance in equivalent applications.

Q: What is the significance of the Hockey Puck package format?

A: The Hockey Puck package is a standardized form factor for solid state relays designed for Chassis Mount installation with Screw Terminal connections. Both the OSSRA0009A and 84134111 use this identical package, ensuring mechanical interchangeability without modifications to mounting hardware or terminal connections.

Q: Why is the OSSRA0009A classified as obsolete?

A: Obsolescence indicates that the manufacturer (TT Electronics/Optek Technology) has discontinued production and support for this part number. The 84134111 from Sensata-Crydom provides an active, supported alternative with equivalent functionality.