KT12 Series SMD Crystal Clock Oscillators
Temperature Compensated
FEATURES
1) Miniature SMD type
(11.6x9.6x2.3mm)
2) Frequency adjustment
free after reflow
soldering process
3) AFC function available
(option)
4) 3V/5V drive available
5) Frequency stability:
±2ppm at -30~+80°C
6) 2000 pieces per reel
7) Sold in increments of
2000 pieces
HOW TO ORDER
KT12
1
2
3
4
5
6
7
8
9
- D C V 33 V - 19.680M T
1
2
3 4 5 6 7
8
9
Type
Terminals: Blank ( )=4 terminals, A=6 terminals
B=8 terminals
Frequency stability: D=±2ppm, E=±2.5ppm, K=±5ppm
Lower operaing temp.: C=-30°C; E=-20°C, G=-10°C
Upper operating temp.: R=60°C; T=70°C; V=80°C
Supply voltage: 30=3.0V; 50=5.0V
AFC function; V=with; N=without; L=with (trimmerless)
Frequency: See table below
Packaging: T= Tape and reel
SPECIFICATIONS
Parameters
Supply Voltage
Code
Vcc
Specification
PHS
3.0V±5%
Cellular
3.0V±5%
5.0V±5%
19.680
19.200
16.800
14.400
13.000
12.800
-30 ~ 80 max.
-40 ~ 85
±2.0 max.
±2.5max.
±0.2 max.
±0.3 max.
±1.0 max.
1.0 min.
2.0 max.
±3.0 min.
ex: ±4.0 ~ ±8.0
-3.0 max.
Unit
V
Remarks
Output Frequency
Operating Temp.
Storage Temp.
Fout
Topr
Tstr
19.200
-10 ~ 60
-20 ~ 70
±2.5 max.
MHz
°C
°C
—
—
—
vs. Temp. (After Reflow)
Frequency Stability
∆ f/fo
ppm
vs. Load
vs. Voltage
1 Year
Load 10kΩ /10pF
—
Internal Trimmer
1.5V±1V, 2.5±1V
—
Aging Rate
Output Voltage
Supply Current
Trimmer Control Range
Voltage Control Range
Harmonics
Aging
Vout
Icc
∆ f/C
∆ f/V
—
ppm/year
Vp-p
mA
ppm
ppm
dBc
DIMENSIONS
1.2
11.6±0.3
7.62±0.15
1
2
RECOMMENDED LAND PATTERN
#2 Pin
(GND)
1.60
#4 Pin
(N.C. or V
con
)
Marking
9.6±0.3
(7.2)
Pad No.
4
3
Function
NC or Vcon
GND/Case GND
OUTPUT
+Vcc
4.60
1.60
Freq. Adj.
1.0
2.3 max.
0.7
1
2
3
4
1.2
1.40
#3 Pin
(Output)
3.68
1.40
#4 Pin
(V
CC
)
TEST CIRCUIT (AMPLITUDE)
A
Synchronized
Scope Counter
Power
Supply
Vcc
V
4 3
Oscillator
1 2
Vcon or N.C.
TEST CIRCUIT
(HARMONICS & FREQUENCY)
A
Spectrum
Analyzer
Power
Supply
Vcc
V
4 3
Oscillator
1 2
Vcon or N.C.
RECOMMENDED REFLOW
PROFILE (IR REFLOW)
(C°)
250
Peak: 230±5°C
15 sec. max.
200
180
150
150±10°C
10kΩ
±10%
C1
10kΩ
±10%
10pF
±10%
100
180°C min.
40 sec. max.
50
60 sec.
0
(sec.)
60 sec.
C1: Probe Capacitance (10pF)
36
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