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KSS321GLFS
C&K
SWITCH TACTILE SPST-NO 0.05A 50V
1963 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
- (272 Ratings)
KSS321GLFS
Product Overview
3986373
DiGi Electronics Part Number
KSS321GLFS-DGManufacturer
C&K
KSS321GLFS
Description
SWITCH TACTILE SPST-NO 0.05A 50VInventory
1963 Pcs New Original In Stock
Tactile Switch SPST-NO Side Actuated Surface Mount, Right Angle
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
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KSS321GLFS 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
200gf
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
KSS32
Datasheet & Documents
PCN Other
KSS2 Series 10/Apr/2015
HTML Datasheet
KSS321GLFS-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
KSS321G LFS
2266-KSS321GLFS
401-1100-1
401-1100-2
*KSS321G
401-1100-6
Q7132075A
*KSS321GLFS
KSS321G
Y39A32110FP
Standard Package
3,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
December 02, 2025
포장 상태가 매우 우수해서 배송 사고가 거의 없습니다. 택배사에서도 포장 품질이 뛰어나다고 칭찬받았습니다.
December 02, 2025
신속한 배송과 친절한 고객 지원으로 재구매 의사 확실히 있어요.
December 02, 2025
スタッフの方々はとても親切で、質問にも丁寧に答えてくれました。大満足です。
December 02, 2025
丁寧なサポートのおかげで、初めての購入もスムーズに進みました。
December 02, 2025
Their packaging never fails to impress, combining strength with eco-friendly materials.
December 02, 2025
I’ve had nothing but positive experiences—affordable prices and lovely customer care.
December 02, 2025
The detailed confirmation emails kept me informed throughout the entire transaction.
December 02, 2025
The delivery was lightning fast, and everything was packed perfectly.
December 02, 2025
DiGi Electronics makes technology accessible with their budget-friendly pricing and caring service.
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Frequently Asked Questions (FAQ)
What are the key design risks when replacing a KSS321GLFS tactile switch with a lower-cost alternative like the Omron B3U-1000P in a consumer IoT device?
While the Omron B3U-1000P offers similar SPST-NO functionality and gull-wing termination, it has a higher operating force (300gf vs. 200gf on the KSS321GLFS), which may alter user perception of button responsiveness in compact handheld devices. Additionally, the B3U-1000P has an IP54 rating compared to the KSS321GLFS’s IP40, making it more suitable for environments with dust or light splashes—but if your application assumes benign indoor use, this over-specification adds unnecessary cost. Critically, the B3U-1000P’s actuator height and side-actuation geometry differ slightly, potentially causing mechanical interference in densely populated PCBs. Always validate footprint compatibility and perform drop-in mechanical testing before full-scale adoption of the KSS321GLFS replacement.
Can the KSS321GLFS be reliably used in automotive under-hood applications given its -40°C to 85°C operating range and IP40 rating?
The KSS321GLFS is not recommended for direct under-hood automotive use despite its extended temperature range. While it meets the thermal requirements, its IP40 ingress protection offers no resistance to oil, fuel vapors, or condensation—common in engine compartments. Furthermore, automotive standards like AEC-Q200 require rigorous mechanical shock, vibration, and humidity testing that the KSS321GLFS hasn’t been qualified for. For such environments, consider sealed alternatives like the C&K KSC series (e.g., KSC221JGT) with IP67 ratings and AEC-Q200 compliance. Reserve the KSS321GLFS for interior cabin controls where environmental stress is minimal.
How does the 0.30mm switch travel of the KSS321GLFS impact haptic feedback design in wearable devices, and what trade-offs should I consider?
The KSS321GLFS’s short 0.30mm travel distance provides crisp tactile feedback ideal for space-constrained wearables, but it reduces the tactile ‘click’ sensation compared to switches with longer travel (e.g., 0.5mm+). This can lead to user uncertainty about successful actuation, especially with gloved or wet fingers. To mitigate this, pair the KSS321GLFS with software-based confirmation (e.g., LED blink or audio cue) or integrate a secondary haptic actuator. Additionally, ensure the overlay or bezel doesn’t dampen the actuator motion—even 0.1mm of misalignment can prevent full travel, leading to perceived switch failure. Always prototype with real-user testing under expected usage conditions.
Is the KSS321GLFS suitable for high-reliability industrial control panels requiring >100,000 actuation cycles, and how does its mechanical life compare to alternatives like the TE Connectivity 1-2319862-1?
The KSS321GLFS is rated for 100,000 mechanical cycles, which meets baseline requirements for many industrial interfaces, but falls short of premium-grade switches like the TE Connectivity 1-2319862-1 (rated for 200,000 cycles). In high-use scenarios—such as emergency stop confirmations or mode selection buttons—the KSS321GLFS may exhibit contact wear or increased actuation force over time, risking intermittent failures. For mission-critical panels, consider derating: use the KSS321GLFS only in low-frequency functions (e.g., menu navigation) and reserve higher-cycle switches for primary controls. Also, ensure your PCB layout minimizes shear stress on the gull-wing leads during repeated actuation to preserve solder joint integrity.
What PCB layout considerations are critical when designing in the KSS321GLFS to avoid tombstoning during reflow soldering?
Tombstoning is a significant risk with the KSS321GLFS due to its asymmetric gull-wing termination and compact 7.60mm x 3.70mm footprint. To prevent this, ensure symmetrical pad geometries with equal copper area and thermal mass on both sides of the switch. Use NSMD (non-solder-mask-defined) pads with a slight elongation (≈0.1mm beyond component outline) to improve solder wicking. Avoid placing large ground planes or thermal vias directly under either pad, as uneven heat dissipation can cause one side to reflow before the other. Additionally, maintain a consistent reflow profile with a slow ramp-up (1–2°C/sec) through the solder melting zone. Following these practices minimizes the risk of the KSS321GLFS lifting during assembly, ensuring reliable mechanical and electrical connections.
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.
KSS321GLFS CAD Models
C&K KSS321GLFS PCB symbols & footprints
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