Designing and manufacturing innovative frequency control devices since 1927
Miniature, Surface Mount Crystal Crystals
SM55
Monitor Products’ SM55 provides a miniature crystal in a highly reliable package that is specifically designed for
surface mount applications. The inner hermetically-sealed construction ensures long-term stability and aging
characteristics.
APPLICATIONS
M
Communication equipment
M
Computers & peripherals
M
Measuring instrumentation
M
Disk & Tape Drives
M
Cameras
FEATURES
M
Double construction for high
reliability
M
Low power consumption
M
Reflow solderable at 260oC
for 10 secs
M
24mm tape & reel
(1000 pcs/reel) available
ELECTRICAL SPECIFICATIONS
Frequency Range
Calibration Tolerance
Frequency Tolerance
vs Temperature Range
Operating Temp Range
Equivalent
Series
Resistance
(MHz =
✡)
Drive Level
Shunt Capacitance
*
Call for your specific frequency requirement
3.5
4.0
5.0
6.0
~
~
~
~
4.0
5.0
6.0
7.0
=
=
=
=
(Fundamental)
(Overtone)
3.579545 ~ 29.4912 MHz
32.0 ~ 70.0 MHz
!100
ppm @ 251C std (!50 ppm avail)
!100
ppm from -101C to 701C
-101C ~ 701C
250
150
120
100
7.0
9.0
13.0
32.0
7.0 pF
**
3rd Overtone
~ 9.0 = 80
~ 13.0 = 60
~ 32.0 = 50
~ 70.0 = 100
**
100.0
✙W
max
Monitor Products has a proven track record as a pioneer manufacturer in the frequency control market. If our
extensive selection of standard and engineered crystals and oscillators does not meet your spec, we will
work with you towards a customized solution.
Units = mm
SM 55
Monitor Products Company Inc reserves the right to make changes to its products and product specifications without notice. No liability is assumed as a result of their use or application.
07-02-01
502 VIA DEL MONTE, OCEANSIDE, CA 92054
TEL:
760.433.4510
FAX:
760.434.0255
SM55
ENVIRONMENTAL PERFORMANCE SPECIFICATIONS
Operating Temperature Range
Storage Temperature Range
Vibration
Shock
Humidity
Hermetic Seal
Solderability
Reflow Solderability
Packaging
-101C ~ 701C Standard
-551C ~ 1251C
MIL-STD-202 Method 204, 35G, 50 to 2000 Hz
MIL-STD-202 Method 213B Test Cond E, 1000G, 1/2 Sine Wave
85% RH, 851C, 48 Hours
Leak Rate 2 x 10
-8
ATM-cm
3
/sec max
MIL-STD-202 Method 208
2601C for 10 seconds
24mm Tape & Reel (1000pcs/reel) or Bulk (<1000pcs )
Units : mm
TAPE DIMENSIONS (24mm)
REEL DIMENSIONS (1000 pcs/reel)
CRYSTAL CORRELATION THEORY
Series Resonance:
At series resonance, the crystal looks
resistive in the circuit, and correlation of
frequency is not a problem. It must be
specified if unit is to be manufactured at
series or at a particular load capacitance.
Anti-Resonance Parallel:
Crystals operating at anti-resonance will look
inductive in the circuit. Changes of reactive values in
the circuit will change the crystal frequency. If the
crystal is to be used at anti-resonance, the load
capacitance should always be specified. The load
capacitance CL is the dynamic capacitance of the
total circuit as measured across the crystal terminals.
CL
F
s =
1
2
o
L
1
C
1
F
p = 1
2
o
C
1
+ C
0
L
1
C
1
C
0
PART
NUMBERING
KEY
SM55
CORRELATION
M = 15 pF
N = 20 pF*
S = Series Resonant
X = Customer Spec
MODE
CALIBRATION
TOLERANCE @ 251C
B = 100 ppm*
C = 50 ppm
TEMPERATURE
RANGE
PACKAGING
A = Bulk
(<1000pcs)
E = Tape & Reel*
(1000pcs/reel)
FREQUENCY
(MHz)
X = Customer spec
1 = Fundamental
7 = 3rd Overtone
7 =
-101C~701C
Sample Part Number
SM55NIB7E
@ 4.0 MHz
* Standard
=
SM55
N
1
B
7
E
4.0
Call factory for additional options. Use full descriptive part number when ordering. Parts will be marked with series and frequency only.
Monitor Products Company Inc reserves the right to make changes to its products and product specifications without notice. No liability is assumed as a result of their use or application.
