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KSS331GLFS
C&K
SWITCH TACTILE SPST-NO 0.05A 50V
71296 Pcs New Original In Stock
Tactile Switch SPST-NO Side Actuated Surface Mount, Right Angle
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Minimum 1
5.0 / 5.0
- (467 Ratings)
KSS331GLFS
Product Overview
4030933
DiGi Electronics Part Number
KSS331GLFS-DGManufacturer
C&K
KSS331GLFS
Description
SWITCH TACTILE SPST-NO 0.05A 50VInventory
71296 Pcs New Original In Stock
Tactile Switch SPST-NO Side Actuated Surface Mount, Right Angle
Quantity
Minimum 1
Minimum 1
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KSS331GLFS Technical Specifications
Category
Tactile Switches
Packaging
Tape & Reel (TR)
Series
KSS
Product Status
Active
Circuit
SPST-NO
Switch Function
Off-Mom
Contact Rating @ Voltage
0.05A @ 50VDC
Actuator Type
Rectangular Button
Mounting Type
Surface Mount, Right Angle
Actuator Height off PCB, Vertical
-
Actuator Length, Right Angle
-
Actuator Orientation
Side Actuated
Termination Style
Gull Wing
Outline
7.60mm x 3.70mm
Illumination
Non-Illuminated
Illumination Type, Color
-
Illumination Voltage (Nominal)
-
Operating Force
250gf
Ingress Protection
IP40
Features
Tactile Feedback
Operating Temperature
-40°C ~ 85°C
Actuator Material
-
Switch Travel
0.30mm
Mechanical Life
100,000 Cycles
Base Product Number
KSS33
Datasheet & Documents
PCN Other
KSS2 Series 10/Apr/2015
HTML Datasheet
KSS331GLFS-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8536.50.9031
Additional Information
Other Names
*KSS331GLFS
Y39A33110FP
KSS331G LFS
401-1101-1
401-1101-2
*KSS331G
401-1101-6
KSS331G
Standard Package
3,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
December 02, 2025
迪捷電子的物流服務非常專業，速度快而且準確無誤。
December 02, 2025
Je suis impressionné par la rapidité de la livraison et la solidité de l’emballage.
December 02, 2025
Overall, the platform's usability made my shopping experience enjoyable and stress-free.
December 02, 2025
Reliable shipping and excellent packaging make DiGi Electronics my preferred supplier.
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Frequently Asked Questions (FAQ)
What are the key design risks when replacing a C&K KSS331GLFS tactile switch with a competitor like the Omron B3SN-3112P in a high-vibration industrial control panel?
While both the KSS331GLFS and Omron B3SN-3112P are SPST-NO tactile switches with similar electrical ratings, the KSS331GLFS features a gull-wing termination and right-angle side actuation optimized for surface-mount reliability under mechanical stress. The Omron part uses J-leads and top actuation, which may be more prone to solder joint fatigue in high-vibration environments. Additionally, the KSS331GLFS has an IP40 rating and RoHS3 compliance, making it better suited for regulated industrial applications. If replacing, ensure mechanical retention (e.g., adhesive or bracketing) and validate solder joint integrity through thermal cycling and vibration testing to mitigate field failure risks.
Can the KSS331GLFS be reliably used in outdoor IoT sensor enclosures exposed to temperature swings from -30°C to 75°C and occasional condensation?
The KSS331GLFS is rated for -40°C to 85°C operation and has an IP40 ingress protection, which protects against solid objects but not moisture. While its operating temperature range covers your conditions, IP40 offers no defense against condensation or water droplets—common in outdoor enclosures. Without additional conformal coating or a sealed housing, moisture ingress could lead to contact corrosion or shorting over time. For reliable long-term use, pair the KSS331GLFS with a gasketed enclosure rated at least IP65 and consider applying a thin silicone conformal coating to the PCB to mitigate humidity-related degradation.
How does the actuator orientation and travel of the KSS331GLFS affect user interface design in compact handheld medical devices?
The KSS331GLFS features side-actuated, right-angle actuation with only 0.30mm of travel and 250gf operating force, making it ideal for slim handheld devices where vertical space is limited. However, the low travel distance requires precise alignment between the external button and the switch to ensure consistent tactile feedback and avoid missed actuations. Designers should incorporate a rigid, low-friction actuator interface (e.g., a polycarbonate plunger) and maintain tight tolerances in the housing cutout. Misalignment or flex in the overlay can lead to inconsistent feel or premature wear, especially over the 100,000-cycle mechanical life.
Is it safe to substitute the KSS331GLFS with the Panasonic EVQ-PUE02K in a battery-powered consumer device where power leakage is a concern?
The KSS331GLFS has a contact rating of 0.05A at 50VDC and no internal leakage path when open, making it suitable for low-power applications. The Panasonic EVQ-PUE02K, while mechanically similar, has a higher minimum operating voltage specification and slightly different contact plating, which may result in marginally higher contact resistance over time—especially problematic in ultra-low-current signal paths. Additionally, the EVQ-PUE02K uses a different termination style (J-lead vs. gull-wing), which affects solder joint reliability under thermal cycling. Unless validated through accelerated life testing, substitution could introduce field reliability issues or inconsistent switch performance in sensitive analog circuits.
What PCB layout considerations are critical to ensure reliable solder joints and mechanical stability for the KSS331GLFS in high-cycle automotive infotainment systems?
The KSS331GLFS uses gull-wing leads and is MSL 1 (unlimited floor life), but its 7.60mm x 3.70mm footprint demands precise pad design and stencil aperture control to prevent tombstoning during reflow. Ensure symmetrical pad geometries, adequate solder mask clearance, and avoid placing vias near the pads to prevent solder wicking. Given its 100,000-cycle mechanical life and use in automotive environments, reinforce mechanical stability by avoiding placement near board edges or flex points. Include strain relief features such as nearby mounting holes or stiffeners, and conduct thermal shock testing (-40°C to 85°C) to validate solder joint integrity under real-world thermal cycling conditions.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
KSS331GLFS CAD Models
C&K KSS331GLFS PCB symbols & footprints
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