E1WS Series
Revised J: 1/19/2017
Page 2
of
10
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om
REGULATORY CO
MPLIANCE
2011/65 +
191 S
V
H
C
2015/863
ITEM DESCRIPTI
ON
Watch
Crystal
Resonator 3.7mm
x 7.9mm x 2.5mm 4 P
ad Plastic Surfac
e Mount (SMD)
ELECTRICA
L SPECIFICATIO
NS
Nominal Frequ
ency
32.768kHz
Frequency Tolerance
±20ppm at 25°C
Frequency Stability Temperature
Coefficient
-
0.034±0.006ppm/(Change in °C
)² Maximum
Turn over Tem
perature
25°C ±5°C
Aging at 25°C
±3ppm/year Maximum
Operating T
emperature R
ange
-40°C to +85°C
Load Capacitance
6 pF Parallel Resonant
12.5pF Parallel Resonant
Shunt Capacita
nce
1.35pF Typical
Motional Capacitance
3.0fF
Typical
Equivalent Series Resistance
50,000 Ohms Maximum
Mode of Operation
Fundamental
Drive Level
1µWatt Maximum
Crystal Cut
Tuning Fork
Storage Tempe
rature Rang
e
-55°C to +125°C
Insulation Resistance
Measured at 100Vdc
500 Megaohms Minimum
PART NUMBERING
GUIDE
E1WS Series
Revised J: 1/19/2017
Page
3
of
10
www.ecliptek.com
PIN
CONNECTIO
N
1
Crystal
2
No Connect to Pin 3
3
No Connect to Pin 2
4
Crystal
MECHANICAL DI
MENSIONS
SUGGESTED SOLDE
R PAD LAYOUT
All Tolerances are ±0.
1
All Dimensions in Millimeter
s
E1WS Series
Revised J: 1/19/2017
Page
4
of
10
www.ecliptek.com
TAPE & REEL
DIMENSIO
NS
Quantity per Reel: 30
00 Units
All Dimensions in Mill
imeters
Compliant to EIA-481
E1WS Series
RECOMMENDED S
OLDER REFLOW MET
HOD
Revised J: 1/19/2017
Page
5
of
10
www.ecliptek.com
HIGH TEMPERAT
URE INFRARED/CO
NVECTION
T
S
MAX to T
L
(Ramp
-
up Rate
)
3°C/Second Maximum
Preheat
-
Temperature
Minimum (T
S
MIN)
-
Temperature Typical (T
S
TYP)
-
Temperature Maximum(T
S
MAX
)
-
Time
(t
S
)
150°C
175°C
200°C
60
- 180 Seconds
Ramp-
up Rate (T
L
to T
P
)
3°C/Second Maximum
Time Maintained Above:
-
Temperature
(T
L
)
-
Time
(t
L
)
217°C
60
- 150 Seconds
Peak Temperature (T
P
)
260°C Maximum for 10 Seconds
Maximum
Target Peak T
emperatur
e(T
P
Target)
250°C +0/-
5°C
Time within 5°C of actual peak (
t
p
)
20 - 40 Seconds
Ramp-
down Rat
e
6°C/Second Maximum
Time 25°C to Pe
ak Tempera
ture (t)
8 Minutes Maximum
Moisture Sensitivity Level
Level 1
Additional N
otes
Temperatures shown are applied to body
of device.
High Temperature Manual Soldering
260°C Maximum for 5 Seconds M
aximum, 2 times Maximum
. (Temperatures shown are applied to bo
dy of device.)
E1WS Series
RECOMMENDED S
OLDER REFLOW MET
HOD
Revised J: 1/19/2017
Page
6
of
10
www.ecliptek.com
LOW TEMPERAT
URE INFRA
RED/CONVECTI
ON
T
S
MAX to T
L
(Ramp
-
up Rate
)
5°C/Second Maximum
Preheat
-
Temperature
Minimum (T
s
MIN
)
-
Temperature Typical (T
s
TYP)
-
Temperature Maximum(T
s
MAX
)
-
Time
(t
s
)
N/A
150°C
N/A
30
- 60 Seconds
Ramp-
up Rate (T
L
to T
P
)
5°C/Second Maximum
Time Maintained Above:
-
Temperature
(T
L
)
-
Time
(t
L
)
150°C
200 Seconds Maximum
Peak Temperature (T
P
)
245°C Maximum
Target Peak T
emperatur
e (T
P
Target)
245°C Maximum 2 Times / 230˚C M
aximum 1 Time
Time within 5°C of actual peak (
t
p
)
10 Seconds Maximum 2 Times / 8
0 Seconds Maximum 1 Time
Ramp-
down Rat
e
5°C/Second Maximum
Time 25°C to Pe
ak Tempera
ture (t)
N/A
Moisture Sensitivity Level
Level 1
Additional N
otes
Temperatures shown are applied to body
of device.
Low Temperature Manual Soldering
185°C Maximum for 10 Seconds
Maximum, 2 times Maximum
. (Temperatures shown are applied to
body of device.)
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