Omron SS-5FD1 Equivalent & Substitute Parts

Part Overview

The Omron SS-5FD1 is a snap action switch with SPDT (Single Pole Double Throw) configuration rated for 5A at 125V AC. This through-hole, right-angle mounted switch features a round pin plunger actuator and is designed for applications requiring reliable momentary contact switching. The SS-5FD1 carries Last Time Buy status, making identification of functionally equivalent alternatives essential for ongoing procurement and design continuity.

Key Parameters

Parameter	Value
Circuit Configuration	SPDT
Current Rating	5A (AC)
Voltage Rating	125V AC
Actuator Type	Round (Pin Plunger)
Mounting Type	Through Hole, Right Angle
Termination Style	PC Pin
Ingress Protection	IP40
Operating Temperature Range	-25°C to 85°C
Electrical Life	200,000 Cycles
Mechanical Life	30,000,000 Cycles
Base Product Series	SS-5

Substitute Part Grouping Explanation

The SS-5D2 qualifies as a direct substitute for the SS-5FD1 based on the following critical parameters:

Circuit Configuration: Both parts are SPDT switches
Electrical Ratings: Both rated for 5A AC at 125V
Actuator and Mounting: Both feature round pin plunger actuators with through-hole, right-angle mounting
Termination: Both use PC pin termination
Environmental Protection: Both rated IP40
Operating Temperature: Both operate across -25°C to 85°C
Electrical and Mechanical Life: Both meet 200,000 electrical cycles and 30,000,000 mechanical cycles

Differences in operating force (50gf vs. 150gf), release force (4.079gf vs. 25gf), and packaging (Tray vs. Bulk) do not prevent functional substitution but should be evaluated for specific application requirements.

Parameter Comparison

Parameter	SS-5FD1 (Main Part)	SS-5D2 (Substitute)
Manufacturer	Omron Electronics Inc-EMC Div	Omron Electronics Inc-EMC Div
Circuit	SPDT	SPDT
Switch Function	On-Mom	On-Mom
Current Rating	5A (AC)	5A (AC)
Voltage Rating - AC	125V	125V
Actuator Type	Round (Pin Plunger)	Round (Pin Plunger)
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle
Termination Style	PC Pin	PC Pin
Ingress Protection	IP40	IP40
Operating Force	50gf	150gf
Release Force	4.079gf	25gf
Operating Position	0.330" (8.4mm)	0.330" (8.4mm)
Pretravel	0.020" (0.5mm)	0.020" (0.5mm)
Differential Travel	0.004" (0.1mm)	0.004" (0.1mm)
Overtravel	0.020" (0.5mm)	0.020" (0.5mm)
Operating Temperature	-25°C to 85°C	-25°C to 85°C
Electrical Life	200,000 Cycles	200,000 Cycles
Mechanical Life	30,000,000 Cycles	30,000,000 Cycles
RoHS Status	RoHS Compliant	ROHS3 Compliant
Product Status	Last Time Buy	Active
Packaging	Tray	Bulk

Engineering Selection Recommendations

The SS-5D2 is the designated substitute for the SS-5FD1. Selection between these parts should be based on the following factors:

Product Status: The SS-5FD1 is Last Time Buy, indicating discontinued production. The SS-5D2 maintains Active status with higher inventory availability (11,115 pcs vs. 787 pcs), ensuring long-term supply continuity.

Compliance: Both parts are RoHS compliant. The SS-5D2 carries ROHS3 Compliant status and REACH Unaffected designation, providing enhanced regulatory alignment for new designs.

Actuator Force Characteristics: The SS-5D2 requires higher operating force (150gf vs. 50gf) and release force (25gf vs. 4.079gf). Applications sensitive to actuation force must account for this difference in mechanical design.

Packaging Considerations: The SS-5FD1 is supplied in Tray packaging, while the SS-5D2 is supplied in Bulk. Procurement and assembly processes may require adjustment based on packaging format.

Frequently Asked Questions (FAQ)

Q: Can the SS-5D2 directly replace the SS-5FD1 in existing designs?

A: The SS-5D2 is electrically and mechanically compatible as a substitute. Both parts share identical circuit configuration (SPDT), electrical ratings (5A at 125V AC), actuator type (round pin plunger), mounting method (through-hole, right-angle), and environmental specifications (IP40, -25°C to 85°C). Designs must account for the higher actuation forces in the SS-5D2.

Q: What are the key differences between these parts?

A: The primary differences are operating force (50gf vs. 150gf), release force (4.079gf vs. 25gf), product status (Last Time Buy vs. Active), packaging format (Tray vs. Bulk), and RoHS certification level (RoHS Compliant vs. ROHS3 Compliant).

Q: Why does the SS-5D2 have higher operating and release forces?

A: Operating and release force values are mechanical characteristics of the switch design. These differences reflect design variations within the SS-5 series and do not affect electrical compatibility. Applications requiring specific actuation force characteristics must be evaluated individually.

Q: Is the SS-5D2 suitable for new product designs?

A: Yes. The SS-5D2 carries Active product status and ROHS3 Compliant certification, making it appropriate for new designs. The higher inventory level also supports production volume requirements.

Q: How does packaging affect part selection?

A: The SS-5FD1 is supplied in Tray packaging, while the SS-5D2 is supplied in Bulk packaging. Procurement, storage, and assembly processes may differ based on packaging format. Verify compatibility with existing receiving and assembly procedures.

Q: Are both parts RoHS compliant?

A: Yes. The SS-5FD1 is RoHS Compliant, and the SS-5D2 is ROHS3 Compliant. The SS-5D2 also carries REACH Unaffected status, providing additional regulatory documentation for supply chain compliance.

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