M49, M49L Series  (108 k bytes)
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Model M49 is the surface mount version of the HC-49/US low profile crystal.
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Lowest cost.The most economic solution for automatic assembly.
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Available in two different overall package heights: 4.2 mm and 3.2 mm.
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SPECIFICATIONS:
| Crystal Holder Prefix: |
M49: 4.2 mm seated height;
M49L: 3.2 mm seated height
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| Mode of Oscillation: |
3.2 ~ 30.0 MHz AT-cut Fundamental mode
27.0 ~ 70.0 MHz AT-cut 3rd Overtone mode
24.0 ~ 48.0 MHz BT-cut Fundamental mode |
| Calibration Tolerance: |
±30 ppm (±0.003 %) at 25癈 |
| Frequency Stability: |
AT-cut:±30 ppm (±0.003 %) over -10 to +60癈
BT-cut:±100 ppm (±0.01 %) over -10 to +60癈 |
| Shunt Capacitance (Co): |
7pF maximum |
| Equivalent Series Resistance (E.S.R.) |
Frequency |
Osc. Mode |
E.S.R. max. |
Frequency |
Osc. Mode |
E.S.R. max. |
| 3.2 ~ 3.4 |
AT funda. |
300 ohms |
13.0 ~ 24.0 |
AT funda. |
45 ohms |
| 3.5 ~ 4.0 |
AT funda. |
150 ohms |
24.1 ~ 30.0 |
AT funda. |
40 ohms |
| 4.1 ~ 4.9 |
AT funda. |
120 ohms |
24.0 ~ 48.0 |
BT funda. |
40 ohms |
| 5.0 ~ 5.9 |
AT funda. |
100 ohms |
27.0 ~ 30.0 |
AT 3rd O/T |
150 ohms |
| 6.0 ~ 8.9 |
AT funda. |
80 ohms |
30.0 ~ 50.0 |
AT 3rd O/T |
100 ohms |
| 9.0 ~ 9.9 |
AT funda. |
60 ohms |
50.1 ~ 70.0 |
AT 3rd O/T |
80 ohms |
| 10.0 ~ 12.9 |
AT funda. |
50 ohms |
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| Load Capacitance (CL): |
Series (S) or
Parallel (If parallel, please specify CL value, typical CL ranges from 8 to 32pF) |
| Drive Level: |
500礧 maximum |
| Aging: |
Less than ±3 ppm per year. At +25癈 |
| Reflow Soldering: |
10 seconds maximum at +260癈 |
| Storage Temperature: |
-40 to +85癈 |
Note: Tighter tolerance, tighter stability and lower ESR are available.
STANDARD FREQUENCIES AND PART NUMBERS
(partial frequency list only. Frequency tolerance, frequency stability and ESR can be specified per your requirements). Change M49 to M49L prefix if 3.2 mm height required.
| MEC Part Number |
MEC Specification Code |
MEC Part Number |
MEC Specification Code |
| M49-3.579545-18P |
30/30/-10+60/150R |
M49-14.7456-S |
30/30/-10+60/45R |
| M49-3.6864-20P |
30/30/-10+60/150R |
M49-16.000312-32P |
30/30/-10+60/45R |
| M49-4.000-20P |
30/30/-10+60/150R |
M49-16.384-S |
30/30/-10+60/45R |
| M49-4.433619-18P |
30/30/-10+60/120R |
M49-18.432-S |
30/30/-10+60/45R |
| M49-4.9152-18P |
30/30/-10+60/120R |
M49-19.6608-S |
30/30/-10+60/45R |
| M49-5.120-18P |
30/30/-10+60/100R |
M49-20.000-20P |
30/30/-10+60/45R |
| M49-6.000-18P |
30/30/-10+60/80R |
M49-24.000-S |
30/30/-10+60/45R |
| M49-6.144-18P |
30/30/-10+60/80R |
M49-24.576-S |
30/30/-10+60/40R |
M49-7.3728-18P |
30/30/-10+60/80R |
M49-29.4912BF-S |
30/100/-10+60/40R (BT-cut Fund.) |
| M49-8.000-18P |
30/30/-10+60/80R |
M49-30.000BF-S |
30/100/-10+60/40R (BT-cut Fund.) |
| M49-9.8304-20P |
30/30/-10+60/60R |
M49-32.000BF-S |
30/100/-10+60/40R (BT-cut Fund.) |
| M49-10.000-18P |
30/30/-10+60/50R |
M49-36.000BF-S |
30/100/-10+60/40R (BT-cut Fund.) |
| M49-11.0592-20P |
30/30/-10+60/50R |
M49-40.000BF-S |
30/100/-10+60/40R (BT-cut Fund.) |
| M49-12.000-18P |
30/30/-10+60/50R |
M49-32.000A3-20P |
30/30/-10+60/100R (AT-cut 3 rd) |
| M49-14.31818-18P |
30/30/-10+60/45R |
M49-64.000A3-S |
30/30/-10+60/80R (AT-cut 3 rd) |
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