8.7x3.8mm SMD Tuning Fork Crystal
KFSR
Page 1 of 2
(former FSRLF)
DATASHEET
STANDARD SPECIFICATIONS
MAX
(unless otherwise noted)
PARAMETERS
Frequency
32.768 kHz
Frequency Tolerance @ 25ºC
(See options on page 2)
Frequency Stability
(Temperature Coefficient)
-0.04 PPM / (ƼC)
2
Temperature Range
Turnover (T
O
)
+20ºC ~ +30ºC
Operating (T
OPR
)
-40°C ~ +85°C
Storage
(T
STG
)
-55ºC ~ +125ºC
Equivalent Series Resistance (R
S
) 50 kΩ
Load Capacitance (C
L
)
(See options on page 2)
Insulation Resistance @ 100V
DC
500 MΩ Min
Drive Level
1.0 µW
Aging per year
±3 PPM
Maximum Soldering Temp / Time 260ºC / 10 Seconds x2
Moisture Sensitivity Level (MSL)
1
Termination Finish
Matte Sn
Lead (Pb) Free
Exempt
RoHS/Reach Compliant
Yes
Mechanical / Dimensions
(millimeters):
Temperature Coefficient
0
‐20
‐40
‐60
RoHS EXEMPTION 7a:
High Temperature solder
(>85% Pb) in crystal seal
ppm
‐80
‐100
‐120
‐140
‐160
‐180
‐40‐30‐20‐10 0 10 20 30 40 50 60 70 80
Note: Dimensional drawing is for reference to critical specifications defined
by size measurements. Certain non-critical visual attributes, such as side
castellations, etc. may vary.
°C
© Copyright 2019 Fox Electronics. All rights reserved
Title / Description:
KSFR STANDARD SPECIFICATIONS
Drawing Number:
KFSR-DOC-1
Size: A
Part Number:
Cage:
61429
Draftsperson:
BEC
Approved:
MAJ
Revision Date: 7/10/2019
FOX [ FOX ELECTRONICS ]
