Equivalent & Substitute Parts for 8121SD9RGE

Part Overview

The 8121SD9RGE is a pushbutton switch manufactured by C&K, featuring SPDT (Single Pole Double Throw) circuit configuration with 1A current rating at 120V AC. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The switch is designed for through-hole, right-angle mounting applications with tactile feedback and a white round plunger actuator.

Substiute Parts

8121SD9RGE

C&KIn Stock: 8208121SD9RGE Datasheet

Current PartRFQ

8121SD9AGE

C&KIn Stock: 56188121SD9AGE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The 8121SD9AGE qualifies as a direct substitute for the 8121SD9RGE based on the following critical parameters:

• Identical circuit configuration (SPDT)
• Identical switch function (On-Momentary)
• Identical current and voltage ratings (1A at 120V AC / 28V DC)
• Identical mounting type (Through Hole, Right Angle)
• Identical actuator type and color (Round, White Plunger)
• Identical termination style (PC Pin)
• Identical operating temperature range (-30°C to 75°C)
• Identical electrical life specification (60,000 Cycles)
• Identical RoHS and REACH compliance status

The primary distinction is product status: 8121SD9RGE is obsolete, while 8121SD9AGE is active with significantly higher inventory availability (5,607 units versus 746 units). Packaging differs (Tray for 8121SD9AGE versus unspecified for 8121SD9RGE), but this does not affect functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

The 8121SD9AGE is the appropriate selection for applications currently specified with 8121SD9RGE. Both components meet identical electrical and mechanical requirements, with full compliance to ROHS3 and REACH regulations. The substitute part carries active product status with substantially higher inventory availability, ensuring supply chain continuity. No design modifications are required for integration of the 8121SD9AGE as a replacement for the obsolete 8121SD9RGE.

Frequently Asked Questions (FAQ)

Q: Can 8121SD9AGE be used as a direct replacement for 8121SD9RGE? A: Yes. Both components share identical electrical ratings (1A at 120V AC / 28V DC), circuit configuration (SPDT), mounting type (Through Hole, Right Angle), and operating specifications. No circuit modifications are necessary.

Q: What is the primary advantage of switching to 8121SD9AGE? A: The 8121SD9AGE is an active product with 5,607 units in stock, compared to 746 units of the obsolete 8121SD9RGE. This ensures long-term availability and supply reliability.

Q: Are there packaging differences between these parts? A: The 8121SD9AGE is supplied in Tray packaging, while the 8121SD9RGE packaging specification is not detailed. Packaging does not affect functional performance or PCB integration.

Q: Do both parts meet the same compliance standards? A: Yes. Both 8121SD9RGE and 8121SD9AGE are ROHS3 Compliant and REACH Affected, meeting identical regulatory requirements.

Q: What is the electrical life specification for these switches? A: Both components are rated for 60,000 electrical cycles, providing equivalent operational durability.