KST221GLFS C&K Components, KST221GLFS Datasheet - Page 4

• Manufacturer Part Number: KST221GLFS
• Description: SWITCH TACT 6.2MM SQ 200GF GWING
• Manufacturer: C&K Components
• Series: KSTr
• Type: Long Travelr

Specifications of KST221GLFS

• Circuit: SPST-NO
• Switch Function: Off-Mom
• Contact Rating @ Voltage: 0.05A @ 30VDC
• Actuator Type: Standard
• Mounting Type: Surface Mount
• Orientation: Vertical
• Outline: 6.20mm x 6.20mm
• Illumination: Non-Illuminated
• Operating Force: 200gf
• Actuator: Soft
• Contact Rating: 10 mAmps
• Contact Form: SPST - NO
• Termination Style: Gullwing
• Mounting Direction: Vertical SMD/SMT
• Body Size: 6.2 mm L x 6.2 mm W x 5 mm H
• Current Rating (max): 50 mAmps
• Power Capacity (va): 1 Volt-Amp
• Voltage Rating Dc: 32 Volts
• Pole Throw Configuration: SPST
• Switch Function Configuration: N.O.
• Actuator Style: Round Button
• Actuator Length (mm): 1.73mm
• Illumination Type: Not Required
• Voltage Rating (vdc): 32V
• Mechanical Life: 100000
• Contact Material: Silver
• Product Length (mm): 6.2mm
• Product Height (mm): 5mm
• Operating Temp Range: -40C to 85C
• Body Orientation: Straight
• Mounting Style: Surface Mount
• Terminal Type: Gull Wing
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 401-1847-2

1. Purpose
C&K components, as design and manufacturing company for micro-miniature tact switches, set up
continuous product improvement to go toward zero defects.
This continuous improvement action leads to implement a major modification on the KST tact switches
series: anti particle central contact will be placed on the lead frame in order to increase product
robustness to dust or particle contamination. In addition, new injection tooling & methods will allow
better over-molding parameters to improve process stability.
Those modifications will make for our customers a significant reduction of any issue linked to the
particle presence failure mode.
2. Change definition
Leadframe
Plastic housing
3. Change impact and qualification method
The design constrain for this new central contact on the lead frame and the new housing was to get no
modification on any specification to avoid any change on customer application. All product
features, mechanical, electrical, environmental remains unchanged.
The manufacturing & quality processes, location and procedures remain also unchanged.
Concerning product qualification, full qualification has been assessed. The corresponding reports are
attached in the annex.
4. Application
4.1
4.2
You will find in the annex 1 the complete P/N list. Please note that specific P/N.
4.3
4.4
C&K
C&K components SAS - 1 rue Louis de la Verne B.P. 359 F-39105 Dole Cedex - FRANCE
Telephone :[phone] - Facsimile: [phone] – www.ck-components.com
Document subject to change without prior notice
Diffusion: no restriction
PCN11-02-KST Rev.A -06/01/2011
Lead frame modification to include several points of contact between the central contact and the
dome. Other modifications such as terminal position on the plastic housing, ejector location and
Central contact round shape allow, in particle presence, to catch it inside the contact. The radius
size has been calculated according the most common particle size.
Other modifications such as terminal position on the plastic housing.
Molded housing with new shape to fit the new contact.
PCN issue: W02/11
PCN application for mass production: March 1
components
The new lead frame including the anti-particle contact with the new molding parameters will be
introduced on the family below at the application date given.
•
Overview
Product range affected
Date of application & time frame
Ordering, pricing and stock handling policy
KST
Ordering: P/N codes remain unchanged.
Pricing: any pricing and other sales conditions remain valid.
Stock handling: no obsolescence and no specification modification is applied on any P/N.
No return or scrap for obsolescence will be accepted.
st
2011
Product change notification
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