SVT867994 Solid State Relay SPST-NO 75A 24-520V Equivalent & Substitute Parts

Part Overview

The SVT867994 is a Solid State Relay (SSR) manufactured by Celduc Inc., configured as a Single Pole Single Throw Normally Open (SPST-NO) module with a 75A load current capacity and operating voltage range of 24V to 520V. This component is classified as obsolete and no longer in active production. Due to its obsolete status, identification of functionally equivalent substitute components is necessary for system maintenance, repair, and new design implementations where this relay specification is required.

Substiute Parts

SVT867994

Celduc Inc.In Stock: 882SVT867994 Datasheet

Current PartRFQ

SGT8678500

Celduc Inc.In Stock: 1186SGT8678500 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete SVT867994 is based on alignment of critical electrical and mechanical parameters that define functional compatibility in solid state relay applications. The primary substitute identified is the SGT8678500, also manufactured by Celduc Inc.

The substitution logic is established on the following key parameters:

Load Current Capacity: Both the main part and substitute maintain 75A load current rating, ensuring equivalent power handling capability.

Load Voltage Range: Both components operate across the 24V to 520V load voltage range, providing identical voltage compatibility for connected loads.

Output Type: Both relays feature AC output with zero-cross switching, maintaining consistent switching characteristics and electromagnetic compatibility.

Mounting Configuration: Both components utilize chassis mount configuration, ensuring mechanical compatibility with existing installation frameworks.

Package Type: Both are supplied as modules, maintaining form factor consistency.

RoHS Compliance: Both components meet RoHS compliance requirements, satisfying environmental and regulatory standards.

Moisture Sensitivity: Both components carry MSL 1 rating (unlimited moisture sensitivity), indicating equivalent environmental tolerance.

The SGT8678500 represents an active production alternative that preserves the critical functional parameters of the obsolete SVT867994 while offering enhanced availability and ongoing manufacturer support.

Parameter Comparison

Engineering Selection Recommendations

The SGT8678500 is the manufacturer-recommended substitute for the obsolete SVT867994. Selection of this substitute is supported by the following engineering considerations:

Product Status and Availability: The SVT867994 is classified as obsolete and no longer manufactured. The SGT8678500 maintains active production status, ensuring long-term component availability and supply chain continuity.

Regulatory Compliance: Both components maintain RoHS compliance certification, satisfying environmental and regulatory requirements for electronic component procurement and deployment.

Functional Parameter Alignment: The substitute preserves all critical electrical parameters including 75A load current capacity, 24V to 520V load voltage range, and AC zero-cross output switching. These parameters ensure direct functional equivalence in applications designed for the original component.

Manufacturer Continuity: Both components are manufactured by Celduc Inc., ensuring consistency in design philosophy, quality standards, and technical support resources.

Environmental Tolerance: Identical MSL 1 ratings confirm equivalent performance under varying moisture and environmental conditions.

The SGT8678500 is suitable for direct substitution in applications where the SVT867994 was originally specified, provided that the expanded input voltage range (24 ~ 255 VAC/DC versus 90 ~ 240 VAC) and circuit configuration differences (3PST-NO versus SPST-NO) are evaluated for the specific application requirements.

Frequently Asked Questions (FAQ)

Q: Can the SGT8678500 directly replace the SVT867994 in existing installations?

A: The SGT8678500 maintains all critical load-side electrical parameters (75A current, 24-520V voltage range, AC zero-cross output) and mechanical parameters (chassis mount, module package) required for functional equivalence. However, the circuit configuration differs: the SVT867994 is SPST-NO (1 Form A) while the SGT8678500 is 3PST-NO (3 Form A). Application-specific evaluation is required to confirm compatibility with control signal requirements and load connections.

Q: What is the significance of the different input voltage ranges between these components?

A: The SVT867994 accepts input voltage of 90 ~ 240 VAC, while the SGT8678500 accepts 24 ~ 255 VAC/DC. The substitute offers broader input voltage compatibility, including DC input capability. This difference does not prevent substitution but requires verification that the control signal source matches the substitute's input specifications.

Q: Are both components suitable for the same mounting applications?

A: Yes. Both components utilize chassis mount configuration and module package type, ensuring mechanical compatibility with existing installation frameworks and panel layouts.

Q: What does the on-state resistance specification indicate for the SGT8678500?

A: The on-state resistance of 4.5 mOhms for the SGT8678500 specifies the maximum resistance of the relay contacts during the closed (conducting) state. This parameter is not provided for the SVT867994 in available documentation. Lower on-state resistance indicates reduced voltage drop and heat generation during operation.

Q: Are there any compliance or certification differences between these components?

A: Both components maintain RoHS compliance and identical moisture sensitivity levels (MSL 1). The SGT8678500 carries additional regulatory classification (ECCN: EAR99, HTSUS: 8536.49.0080), reflecting its active production status and international trade documentation requirements.

Q: Why is the SVT867994 classified as obsolete?

A: The SVT867994 has been discontinued by the manufacturer and is no longer in active production. The SGT8678500 represents the current production alternative from Celduc Inc. that maintains functional equivalence for the critical load-side parameters.