CS131 Solid State Relay SPST-NO - Equivalent & Substitute Parts

Part Overview

The CS131 is a surface mount solid state relay (SSR) manufactured by Coto Technology, designed for SPST-NO (Single Pole Single Throw - Normally Open) switching applications with AC/DC load capabilities. This device is classified as obsolete product status, necessitating identification of compatible alternatives to ensure continued availability for maintenance, repair, and new design implementations. Equivalent substitute parts must maintain functional compatibility across critical electrical and mechanical parameters while meeting current compliance and availability requirements.

Substiute Parts

CS131

Coto TechnologyIn Stock: 2464CS131 Datasheet

Current PartRFQ

VOR1142B6

Vishay Semiconductor Opto DivisionIn Stock: 1050VOR1142B6 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute compatibility for the CS131 is determined by maintaining equivalent functional parameters within the specified operating ranges. The VOR1142B6 from Vishay Semiconductor Opto Division qualifies as a direct substitute based on the following critical alignment criteria:

Functional Equivalence Parameters:

• Circuit topology: Both employ SPST-NO (1 Form A) configuration
• Output capability: Both support AC and DC load switching
• Package format: Both utilize 6-SMD (0.300", 7.62mm) surface mount configuration
• Termination: Both use Gull Wing termination style
• Load current rating: VOR1142B6 provides 140 mA, exceeding the CS131 requirement of 130 mA
• Load voltage range: VOR1142B6 supports 0 V ~ 400 V, exceeding the CS131 range of 0 V ~ 350 V
• Input voltage: VOR1142B6 operates at 1.36 VDC, equivalent to CS131 at 1.37 VDC
• Compliance: Both meet ROHS3 requirements

The VOR1142B6 represents a direct drop-in replacement with enhanced electrical specifications and active product status, ensuring long-term supply availability.

Parameter Comparison

Engineering Selection Recommendations

The VOR1142B6 is the designated substitute for the obsolete CS131 based on the following engineering criteria:

Compliance and Regulatory Status: Both components maintain ROHS3 compliance, ensuring conformance to environmental and hazardous substance directives. The VOR1142B6, as an active product, provides assurance of continued compliance maintenance and supply chain continuity.

Product Lifecycle Status: The CS131 classification as obsolete creates supply risk for ongoing applications. The VOR1142B6 active product status eliminates long-term procurement concerns and supports component longevity in fielded systems.

Electrical Performance: The VOR1142B6 exceeds the CS131 electrical specifications across all measured parameters. The higher load voltage rating (400 V vs. 350 V) and increased load current capacity (140 mA vs. 130 mA) provide operational margin. The marginal increase in on-state resistance (27 Ohms vs. 24 Ohms) remains within acceptable tolerance for SPST-NO relay applications.

Manufacturing Compatibility: Identical package format, footprint, and termination style enable direct printed circuit board compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can the VOR1142B6 directly replace the CS131 in existing designs? A: Yes. The VOR1142B6 maintains identical physical and functional characteristics, including package format (6-SMD), termination style (Gull Wing), and circuit topology (SPST-NO). No PCB modification is required for substitution.

Q: How do the electrical specifications compare between these devices? A: The VOR1142B6 provides enhanced specifications: 400 V load voltage capability versus 350 V, and 140 mA load current versus 130 mA. Input voltage requirements remain equivalent (1.36 VDC vs. 1.37 VDC). The on-state resistance differential (27 Ohms vs. 24 Ohms) is within normal relay tolerance ranges.

Q: What advantages does the VOR1142B6 offer beyond substitution? A: Beyond functional equivalence, the VOR1142B6 provides active product status, ensuring supply availability and continued compliance certification. The improved moisture sensitivity level (1 vs. 2) extends shelf life from 1 year to unlimited, reducing storage and handling constraints.

Q: Are both components suitable for AC and DC load applications? A: Both the CS131 and VOR1142B6 support AC and DC load switching, making either component appropriate for mixed-mode switching requirements.

Q: What is the significance of the MSL (Moisture Sensitivity Level) rating difference? A: The VOR1142B6 MSL-1 rating eliminates the one-year floor life requirement applicable to the CS131 (MSL-2). This reduces component storage management complexity and extends usable shelf life.

You can now copy this content directly into your web Markdown editor. The document uses pure HTML table syntax for compatibility and adheres to all specified formatting requirements.