PRODUCT SPECIFICATION
July 2012
KSA LFT
rev. G
Ref. / PS-KSA-152
Page 1 / 8
Approvals:
____________________________________________________________
Laurent Kubat Date
Engineering Manager
____________________________________________________________
Revision record:
Revision Date Comments
- Dec. 4
th
, 2006 Creation
A April 19
th
, 2007 Update :
• Designation of the KSAOV711LFT without bracket
• Mechanical data :
- Comments on mechanical data..
- Frr on KSAOV711LFT without bracket version.
• Flowing mixed gas corrosion test only for Au version.
(according to ECR N°1077)
B Nov. 28
th
, 2007 Update :
• Logo C&K (according to ECR 1399)
• Process environment : Washing process (according to ECR 1653)
C May 7
th
, 2008 Update :
• KSA OV 211 LFT connexions 3.3 version added.
(according to ECR 1941)
D September 25
th
, 2008 Update :
• Mechanical data : switching force (according to ECR 2735)
• UL data suppressed (according to ECR 2324)
E March 18
th
, 2008 Update :
• Product N° & drawing N° of the KSA OV 511 LFT version
updated. (according to ECR 3488)
• KSA 1A 431 LFT version suppressed (according to ECR 517)
• KSA OA 511 LFT 2 connexions at right angle version suppressed
(according to ECR 1790)
F August 17
th
, 2010 Update :
• Table pages 5 to 9 (according to ECR 2606, 3330)
• KSA OV 611 LFT connexions 3.3 versions added (according to
ECR 5848)
G July 4
th
, 2012 Update :
• KSA OV 411 LFT connexions 3.3 without bracket version added
(according to ECR 8294)
Laurent Kubat
2012.09.04 10:15:57
+02'00'
PRODUCT SPECIFICATION
July 2012
KSA LFT
rev. G
Ref. / PS-KSA-152
Page 2 / 8
Summary:
1. Description / Main Features
2. Construction
3. Electrical data
4. Mechanical data
5. Physical data
6. Operating environment
7. Additional data : storage and handling environment
8. Additional data : process environment
9. Applicable norms
Note:
This specification, attached documents and attached drawings cannot be communicated to anybody without written
agreement of C&K.
PRODUCT SPECIFICATION
July 2012
KSA LFT
rev. G
Ref. / PS-KSA-152
Page 3 / 8
1 - Description 2 - Construction
Function Momentary action
Contact type SPST, Normally Open
Terminals Through hole
3 - Electrical data
Contact plating : Ag or Au
Maximum power KSA Ag : 1.0 VA
KSA Au : 0.2 VA
Min/max voltage 20 mVdc – 32 Vdc
Min/max current KSA Ag : 1.0 mA – 50 mA
KSA Au : 1.0 mA – 10 mA
Dielectric strength ≥ 250 Vrms
Contact resistance ≤ 100 mΩ
Insulation resistance Initial measurement : ≥ 1 GΩ
After damp heat : ≥ 10 MΩ
Bounce time ≤ 1 ms
The KSA LFT (Lead Free
version) is a miniature tact
switch with single pole, single
throw and normally open contact
designed for automatic or manual
insertion.
4 - Mechanical data (note: ▼ critical product characteristics)
Mechanical data of the product before soldering process. Variations of these
characteristics can be observed after soldering process.
Switching force (Fa) ▼ See table pages 5 to 8
Tactile feeling (∆%)▼ See table pages 5 to 8
Return force (Frr) ▼ See table pages 5 to 8
Electrical travel (Te) See table pages 5 to 8
Simultaneity ≤ 0.05 mm
5 – Physical data
Dimensions & layout According to drawing
(drawing N° on the table pages 5 to 8)
Mass 0.25 g
± 0.1
6 - Operating environment
Operating temperatures - 40°C / + 85°C
Relative humidity 90 to 96 %
According to NF EN 60068-2-30
Operating life 100 Kcycles min for all versions.
Some versions existing with extended life time.
Vibrations 10-500 Hz / 10 g / 3 axis
No discontinuity > 1µs
According to NF EN 60068-2-6
Mechanical shocks
½ sinusoidal / 50 g / 11 ms
3 shocks in each direction of the 3 axis
No discontinuity > 1µs
According to NF EN 60068-2-27
Main Features
• Short, hard plastic actuator
• Good tactile feedback
• Terminal plating: LFT (lead
free tin)
• ROHS Compliance
• Compatible with lead free
process (wave or hand
soldering only).
• Insertion:
- M: manual
- A : automatic
- V : vertical
• Available with curved
terminals to ensure self-
retention on the printed
circuit board in manual
insertion (M version), or with
straight terminals for use in
automatic insertion machines
(A version).
• Optional : ground terminal
• Marking :
On the packaging box :
- Manufacturer’s symbol
- Component designation
- EIA date code
Overload 40 N max
PRODUCT SPECIFICATION
July 2012
KSA LFT
rev. G
Ref. / PS-KSA-152
Page 4 / 8
Flowing mixed gas corrosion test
- only for gold version -
Gas composition :
- H
2
S : 0.01
± 0.005
ppm
- NO
2
: 0.2
± 0.02
ppm
- Cl
2
: 0.01
± 0.005
ppm
- SO
2
: 0.2
± 0.02
ppm
Temperature: 25°C / HR: 75% / Duration: 10
days.
According to NF EN 60068-2-60 method 4
7 - Additional data : storage and handling environment
Packaging conditions Delivered in packaging tubes of 65 pieces for
automatic insertion or in packaging boxes of 500
pieces for manual insertion (250 for KSAV).
Transport conditions According to specification NF H00-060
Storage temperatures - 40°C
(10 days)
/ + 85°C
(4 days)
8 - Additional data : process environment
Soldering process Single or double wave soldering process
According to lead free process
(
C&K
Procedure : PS
-
LF
-
002)
Washing process Compatible on terminations only
IP IP 60
Shear test (switch/
PCB
) 10 N
9 – Applicable norms
Testing procedure (C&K spec) Proc-essai 16
Except requirements icluded in this spec.
Legal norm (EHS) C&K procedure
PRODUCT SPECIFICATION
July 2012
KSA LFT
rev. G
Ref. / PS-KSA-152
Page 5 / 8
Designation Product N° Drawing N° Switching force
Fa (N)
Tactile
feeling
(N)
Return
force
Frr (N)
Electrical
travel
Te (mm)
Contact
plating
KSA 0M 211 LFT Y 33 A21 115 FP LFT 1.00 N ≤ Fa ≤ 1.80 N ≥ 0.35 ≥ 0.35 0.50
± 0.20
Silver
KSA OM 311 LFT Y 33 A31 115 FP LFT 1.00 N ≤ Fa ≤ 1.80 N ≥ 0.35 ≥ 0.35 0.50
± 0.20
Silver
KSA OM 331 LFT Y 33 A33 115 FP LFT 1.0 N ≤ Fa ≤ 1.80 N ≥ 0.35 ≥ 0.35 0.50
± 0.20
Gold
KSA OM 411 LFT Y 33 A41 115 FP LFT 2.25 N ≤ Fa ≤ 3.75 N ≥ 0.80 ≥ 0.5 0.60
± 0.20
Silver
KSA OM 431 LFT Y 33 A43 115 FP LFT 2.25 N ≤ Fa ≤ 3.75 N ≥ 0.80 ≥ 0.5 0.60
± 0.20
Gold
KSA OM 511 LFT Y 33 A51 115 FP LFT 3.50 N ≤ Fa ≤ 6.50 N ≥ 1.50 ≥ 1.2 0.70
± 0.20
Silver
KSA OM 531 LFT Y 33 A53 115 FP LFT 3.50 N ≤ Fa ≤ 6.50 N ≥ 1.50 ≥ 1.2 0.70
± 0.20
Gold
KSA OM 511 Fr ≥ 2N LFT Y 33 A71 115 FP LFT 3.50 N ≤ Fa ≤ 6.50 N ≥ 1.50 ≥ 2 0.70
± 0.20
Silver
KSA OM 911 LFT Y 33 A91 115 FP LFT 2.25 N ≤ Fa ≤ 3.75 N ≥ 0.80 ≥ 0.5 0.60
± 0.20
Silver
KSA OM LFT
KSA OM 931 LFT Y 33 A93 115 FP LFT
CU 33 M01 018 FP
2.25 N ≤ Fa ≤ 3.75 N ≥ 0.80 ≥ 0.5 0.60
± 0.20
Gold
KSA 0M LFT
Actuator : 2.9 KSA OM 411 LFT
Actuator : 2.9 Y 33 A41 105 FP LFT CU 33 M01 012 FP 2.25 N ≤ Fa ≤ 3.75 N ≥ 0.80 ≥ 0.5 0.60
± 0.20
Silver
PRODUCT SPECIFICATION
July 2012
KSA LFT
rev. G
Ref. / PS-KSA-152
Page 6 / 8
Designation Product N° Drawing N° Switching force
Fa (N)
Tactile
feeling
(N)
Return
force
Frr (N)
Electrical
travel
Te (mm)
Contact
plating
KSA 1M 211 LFT Y 33 A21 116 FP LFT 1.00 N ≤ Fa ≤ 1.80 N ≥ 0.35 ≥ 0.35 0.50
± 0.20
Silver
KSA 1M 331 LFT Y 33 A33 116 FP LFT 1.00 N ≤ Fa ≤ 1.80 N ≥ 0.35 ≥ 0.35 0.50
± 0.20
Gold
KSA 1M 411 LFT Y 33 A41 116 FP LFT 2.25 N ≤ Fa ≤ 3.75 N ≥ 0.80 ≥ 0.5 0.60
± 0.20
Silver
KSA 1M 431 LFT Y 33 A43 116 FP LFT 2.25 N ≤ Fa ≤ 3.75 N ≥ 0.80 ≥ 0.5 0.60
± 0.20
Gold
KSA 1M 511 LFT Y 33 A51 116 FP LFT 3.50 N ≤ Fa ≤ 6.50 N ≥ 1.50 ≥ 1.2 0.70
± 0.20
Silver
KSA 1M 531 LFT Y 33 A53 116 FP LFT 3.50 N ≤ Fa ≤ 6.50 N ≥ 1.50 ≥ 1.2 0.70
± 0.20
Gold
KSA 1M 911 LFT Y 33 A91 116 FP LFT
CU 33 M01 016 FP
2.25 N ≤ Fa ≤ 3.75 N ≥ 0.80 ≥ 0.5 0.60
± 0.20
Silver
KSA 1M LFT
KSA 1M 311 LFT Y 33 A31 116 FP LFT CU 33 A31 116 FP LFT 1.00 N ≤ Fa ≤ 1.80 N ≥ 0.35 ≥ 0.35 0.50
± 0.20
Silver
KSA 1M LFT
Actuator : 2.9 KSA 1M 211 LFT
Actuator : 2.9 Y 33 A21 106 FP LFT CU 33 M01 014 FP 1.00 N ≤ Fa ≤ 1.80 N ≥ 0.35 ≥ 0.35 0.50
± 0.20
Silver
KSA OA 211 LFT Y 33 A21 111 FP LFT 1.00 N ≤ Fa ≤ 1.80 N ≥ 0.35 ≥ 0.35 0.50
± 0.20
Silver
KSA OA 331 LFT Y 33 A33 111 FP LFT 1.00 N ≤ Fa ≤ 1.80 N ≥ 0.35 ≥ 0.35 0.50
± 0.20
Gold
KSA OA 411 LFT Y 33 A41 111 FP LFT 2.25 N ≤ Fa ≤ 3.75 N ≥ 0.80 ≥ 0.5 0.60
± 0.20
Silver
KSA OA 431 LFT Y 33 A43 111 FP LFT 2.25 N ≤ Fa ≤ 3.75 N ≥ 0.80 ≥ 0.5 0.60
± 0.20
Gold
KSA OA 511 LFT Y 33 A51 111 FP LFT 3.50 N ≤ Fa ≤ 6.50 N ≥ 1.50 ≥ 1.2 0.70
± 0.20
Silver
KSA OA 531 LFT Y 33 A53 111 FP LFT 3.50 N ≤ Fa ≤ 6.50 N ≥ 1.50 ≥ 1.2 0.70
± 0.20
Gold
KSA OA LFT
KSA OA 931 LFT Y 33 A93 111 FP LFT
CU 33 M01 112 FP
2.25 N ≤ Fa ≤ 3.75 N ≥ 0.80 ≥ 0.5 0.60
± 0.20
Gold
KSA 1A LFT
Actuator : 2.9
KSA 1A 211 LFT
Actuator : 2.9 Y 33 A21 102 FP LFT CU 33 M01 116 FP 1.00 N ≤ Fa ≤ 1.80 N ≥ 0.35 ≥ 0.35 0.50
± 0.20
Silver
PRODUCT SPECIFICATION
July 2012
KSA LFT
rev. G
Ref. / PS-KSA-152
Page 7 / 8
Designation Product N° Drawing N° Switching force
Fa (N)
Tactile
feeling
(N)
Return
force
Frr (N)
Electrical
travel
Te (mm)
Contact
plating
KSA 1A 211 LFT Y 33 A21 112 FP LFT 1.00 N ≤ Fa ≤ 1.80 N ≥ 0.35 ≥ 0.35 0.50
± 0.20
Silver
KSA 1A 331 LFT Y 33 A33 112 FP LFT 1.0 N ≤ Fa ≤ 1.80 N ≥ 0.35 ≥ 0.35 0.50
± 0.20
Gold
KSA 1A 511 LFT Y 33 A51 112 FP LFT 3.50 N ≤ Fa ≤ 6.50 N ≥ 1.50 ≥ 1.2 0.70
± 0.20
Silver
KSA 1A LFT
KSA 1A 531 LFT Y 33 A53 112 FP LFT
CU 33 M01 114 FP
3.50 N ≤ Fa ≤ 6.50 N
≥ 1.50 ≥ 1.2 0.70
± 0.20
Gold
KSA OV 211 LFT Y 33 A21 119 FP LFT 1.00 N ≤ Fa ≤ 1.80 N ≥ 0.35 ≥ 0.35 0.50
± 0.20
Silver
KSA OV 311 LFT Y 33 A31 119 FP LFT 1.00 N ≤ Fa ≤ 1.80 N ≥ 0.35 ≥ 0.35 0.50
± 0.20
Silver
KSA OV 331 LFT Y 33 A33 119 FP LFT 1.00 N ≤ Fa ≤ 1.80 N ≥ 0.35 ≥ 0.35 0.50
± 0.20
Gold
KSA OV 411 LFT Y 33 A41 119 FP LFT 2.25 N ≤ Fa ≤ 3.75 N ≥ 0.80 ≥ 0.5 0.60
± 0.20
Silver
KSA OV 431 LFT Y 33 A43 119 FP LFT 2.25 N ≤ Fa ≤ 3.75 N ≥ 0.80 ≥ 0.5 0.60
± 0.20
Gold
KSA OV 511 LFT Y 33 A51 119 FP LFT 3.50 N ≤ Fa ≤ 6.50 N ≥ 1.50 ≥ 1.2 0.70
± 0.20
Silver
KSA OV 531 LFT Y 33 A53 119 FP LFT 3.50 N ≤ Fa ≤ 6.50 N ≥ 1.50 ≥ 1.2 0.70
± 0.20
Gold
KSA OV 911 LFT Y 33 A91 119 FP LFT 2.25 N ≤ Fa ≤ 3.75 N ≥ 0.80 ≥ 0.5 0.60
± 0.20
Silver
KSA OV LFT
KSA OV 931 LFT Y 33 A93 119 FP LFT
CU 33 M14 216 FP
2.25 N ≤ Fa ≤ 3.75 N ≥ 0.80 ≥ 0.5 0.60
± 0.20
Gold
KSA OV LFT
Connexions : 2.7
bracket for PCB 1 mm
KSA OV 911 LFT
Connexions: 2.7 bracket for PCB 1mm
Y 33 A91 11E FP LFT CU 33 M14 217 FP 2.25 N ≤ Fa ≤ 3.75 N ≥ 0.80 ≥ 0.5 0.60
± 0.20
Silver
KSA OV 211 LFT
Connexions : 3.3 Y 33 A21 11C FP LFT 1.00 N ≤ Fa ≤ 1.80 N ≥ 0.35 ≥ 0.35 0.50
± 0.20
Silver
KSA OV 331 LFT
Connexions : 3.3 Y 33 A33 11C FP LFT N ≤ Fa ≤ 1.80 N ≥ 0.35 ≥ 0.35 0.50
± 0.20
Gold
KSA OV 411 LFT
Connexions : 3.3 Y 33 A41 11C FP LFT 2.25 N ≤ Fa ≤ 3.75 N ≥ 0.80 ≥ 0.5 0.60
± 0.20
Silver
KSA OV 511 LFT
Connexions : 3.3 Y 33 A51 11C FP LFT 3.50 N ≤ Fa ≤ 6.50 N ≥ 1.50 ≥ 1.2 0.70
± 0.20
Silver
KSA OV LFT
Connexions : 3.3
KSA OV 611 LFT
Connexions : 3.3 Y 33 A61 11C FP LFT
CU 33 M14 218 FP
4.20 N ≤ Fa ≤ 6.50 N ≥ 1.50 ≥ 1.2 0.70
± 0.20
Silver
PRODUCT SPECIFICATION
July 2012
KSA LFT
rev. G
Ref. / PS-KSA-152
Page 8 / 8
Designation Product N° Drawing N° Switching force
Fa (N)
Tactile
feeling
(N)
Return
force
Frr (N)
Electrical
travel
Te (mm)
Contact
plating
KSA OV 211 LFT
Actuator : 2.9 Y 33 A21 109 FP LFT 1.00 N ≤ Fa ≤ 1.80 N ≥ 0.35 ≥ 0.35 0.50
± 0.20
Silver
KSA OV LFT
Actuator : 2.9 KSA OV 331 LFT
Actuator : 2.9 Y 33 A33 109 FP LFT CU 33 M14 219 FP 1.00N ≤ Fa ≤ 1.80 N ≥ 0.35 ≥ 0.35 0.50
± 0.20
Gold
KSA OV 211 LFT
Without bracket Y 33 A21 127 FP LFT 1.00 N ≤ Fa ≤ 1.80 N ≥ 0.35 ≥ 0.35 0.50
± 0.20*
Silver
KSA OV 311 LFT
Without bracket Y 33 A31 127 FP LFT 1.00 N ≤ Fa ≤ 1.80 N ≥ 0.35 ≥ 0.35 0.50
± 0.20*
Silver
KSA OV 331 LFT
Without bracket Y 33 A33 127 FP LFT 1.00 N ≤ Fa ≤ 1.80 N ≥ 0.35 ≥ 0.35 0.50
± 0.20*
Gold
KSA OV 411 LFT
Without bracket Y 33 A41 127 FP LFT 2.25 N ≤ Fa ≤ 3.75 N ≥ 0.80 ≥ 0.5 0.60
± 0.20*
Silver
KSA OV 431 LFT
Without bracket Y 33 A43 127 FP LFT 2.25 N ≤ Fa ≤ 3.75 N ≥ 0.80 ≥ 0.5 0.60
± 0.20*
Gold
KSA OV 711 LFT
Without bracket Frr > 0.9 Y 33 A71 127 FP LFT 2.25 N ≤ Fa ≤ 3.75 N ≥ 0.80 ≥ 0.9 0.60
± 0.20*
Silver
KSA OV 911 LFT
Without bracket Y 33 A91 127 FP LFT 2.25 N ≤ Fa ≤ 3.75 N ≥ 0.80 ≥ 0.5 0.60
± 0.20*
Silver
KSA OV 931 LFT
Without bracket Y 33 A93 127 FP LFT
CU 33 M14 220 FP
2.25 N ≤ Fa ≤ 3.75 N ≥ 0.80 ≥ 0.5 0.60
± 0.20
Gold
KSA OV LFT
Without bracket
KSA OV 511 LFT
Without bracket Y 33 A51 127 FP LFT CU 33 A51 127 FP LFT 3.50 N ≤ Fa ≤ 6.50 N ≥ 1.50 ≥ 1.2 0.70
± 0.20*
Silver
KSA OV 411 LFT
Connexions : 3.3, Without bracket Y 33 A41 12L FP LFT 2.25 N ≤ Fa ≤ 3.75 N ≥ 0.80 ≥ 0.5 0.60
± 0.20*
Silver
KSA OV 511 LFT
Connexions : 3.3, Without bracket Y 33 A51 12L FP LFT 3.50 N ≤ Fa ≤ 6.50 N ≥ 1.50 ≥ 1.2 0.70
± 0.20*
Silver
KSA OV LFT
Connexions : 3.3
Without bracket KSA OV 611 LFT
Connexions : 3.3, Without bracket Y 33 A61 12L FP LFT
CU 33 M14 223 FP
4.20 N ≤ Fa ≤ 6.50 N ≥ 1.50 ≥ 1.2 0.70
± 0.20*
Silver
KSA OV LFT
Actuator : 2.9
Without bracket
KSA OV 511 LFT
Actuator : 2.9, Without bracket Y 33 A51 107 FP LFT CU 33 M14 222 FP 3.50 N ≤ Fa ≤ 6.50 N ≥ 1.50 ≥ 1.2 0.70
± 0.20*
Silver
* Measurement on part without bracket: Electrical travel without any product deflexion.
