TFPM Series

TFPM Series
Tuning Fork Crystal
FEATURES
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32.7680 kHz Frequency Reference
Package Size 8.0mm x 3.8mm
Tuning Fork Crystal Design
Plastic Molded Package
Frequency Tolerance, ±20 ppm Standard
Frequency Temperature Coefficient, -0.034ppm/°C2
Operating Temperature, -40°C to +85°C Standard
Tape & Reel Packaging, EIA-481
RoHS Compliant in Accordance with EU Directive 2011/65/EU
- Lead-Free Termination Finish
- Exemption 7(a), Lead [Pb] in high melting temperature type solders
APPLICATIONS
The TFPM crystal series is ideal for use in a wide range of applications requiring a real-time frequency reference.
Compatible to Citizen CM200C/S and Epson MC-306.
ORDERING INFORMATION
TF P M
3 2 K 7 6 8 0
PACKAGE SIZE
PM = 8.0mm x 3.8mm
[Plastic Molded]
PACKAGING OPTIONS
T - 1k pcs./reel
R - 3k pcs./reel
FREQUENCY IN kHz
FREQUENCY TOLERANCE @ 25°C
2 = ± 20 ppm [standard]
K - indicates kHz and decimal point.
1
LOAD CAPACITANCE
P = 12.5 pF [standard]
T = 6 pF [optional] 2
1] Frequency is recorded with two leading digits before the ‘K’ and 4 significant digits after the ‘K’ (including zeros).
2] Contact factory for availability.
Not all performance combinations and frequencies may be available.
Contact your local CTS Representative or CTS Customer Service for availability.
PACKAGING INFORMATION [reference]
Device quantity is 1k pcs. maximum 180mm reel and 3k pcs. maximum 330mm reel.
Document No. 008-0405-0
Page 1- 3
www.ctscorp.com
Rev. B
TFPM Series
Tuning Fork Crystal
ELECTRICAL PARAMETERS
ELECTRICAL CHARACTERISTICS
PARAMETER
Frequency
Operating Mode
Frequency Tolerance
Frequency Temperature Coefficient
Frequency Stability
Operating Temperature Range
Turnover Temperature
Load Capacitance *
Aging
Drive Level
Shunt Capacitance
Motional Capacitance
Series Resistance
Insulation Resistance
Storage Temperature Range
SYMBOL
f0
Δf/f0
Δf/fM
TA
TM
CL
Δf/f0
DL
C0
C1
R1
Ri
TSTR
CONDITIONS
@+25°C
±5°C
Standard
@+25°C, 1st year
+100Vdc ±15Vdc
MIN
TYP
MAX
32.7680
Flexural Mode [Tuning Fork]
20
-0.034±0.006ppm/°C2
See Figure 1
-40
+85
+25
12.5
3.0
0.5
1.0
1.35
2.1
50
500
-40
+85
UNIT
kHz
± ppm
°C
°C
pF
± ppm
µW
pF
fF
k Ohms
M Ohms
°C
FIGURE 1
PARABOLIC TEMPERATURE CURVE
0
-10 -40 -30 -20 -10
0
10
20
30
40
50
60
70
80
90
-20
Frequency stability [ppm] is determined using parabolic
curve, Δf = Temperature Coefficent(TA-TM)2.
-30
-40
Ex. Find frequency stability at TA = 45°C
Δf = -0.034(45-25)2
Δf = -0.034(20)2
Δf = -13.6 ppm
Δf/f [ppm]
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
Temperature [°C]
Document No. 008-0405-0
Page 2 - 3
Rev. B
TFPM Series
Tuning Fork Crystal
MECHANICAL SPECIFICATIONS
PACKAGE DRAWING
32xYWW
NOTES
1. Complete CTS part number, frequency value,
date code and manufacturing site code information
must appear on reel and carton labels.
2. Leads (e3); tin [Sn].
3. Reflow conditions per JEDEC J-STD-020;
260°C maximum, 10 seconds.
4. MSL = 1.
MARKING INFORMATION
1. 32 – Frequency, 32.7680kHz.
2. x – Load Capacitance.
P = 12.5pF
T = 6pF
3. YWW – Date Code.
Y = year
WW = week
SUGGESTED SOLDER PAD GEOMETRY
Document No. 008-0405-0
Page 3 - 3
Rev. B