| 1. GENERAL |
| HOLDER TYPE | 49US | | |
| MODE OF VIBRATION | AT CUT | | |
| OSCILLATION MODE | FUND S&A | | |
| TEST FACILITIES | KH-1240 | | |
| STORAGE TEMPERATURE | -40 TO +85 | | |
| DRIVER LEVEL | 100W | | |
| 2. ELECTRICAL PARAMETER |
| NORMAL FREQUENCY | 28.920 | MHz | |
| FREQUENCY TOLERANCE (252) | 30 | ppm | |
| TEMPERATURE STABILITY | 20 | ppm | |
| OPERATING TEMPERATURE RANGE | -20 TO +70 | | |
| LOAD CAPACITANCE | 20 | PF | |
| MOTIONAL CAPACITANCE | 3 | PF | MAX |
| SHUNT CAPACITANCE | | | See Fig-1 for details |
| EFFECTIVE SERIES RESISTANCE | 40 | | MAX |
| INSULATION RESISTANCE | 500 | M OHMS | MIN AT DC 100V |
| 3. MECHANICAL PARAMETER |
| SOLDERABILITY | 95% COVERAGE BY USING 90/10 SOLD AT 245 FOR 5 SEC. | | DIPPING AFTER IMMERSION IN ALPHA 611 FLUX FOR 5 SEC. |
| 4. MECHANICAL ENDURANCE |
| SHOCK | Electrical characteristics shall be satisfied after dropping three times from the height of 50 cm onto Hard wooden board. | | |
| VIBRATION | Electrical characteristics shall be satisfied after supplying following Vibration. | | |
| VIBRATION FREQUENCY | 1055Hz | | |
| REPEATED PERIOD | 12min | | |
| FULL CYCLE | 1.5mm PP | | |
| DIRECTION | X.Y.Z | | 2 hours/each direction |
| STRENGTH OF TERMINALS/LEADWIRES | | | Provided that measurement shall be carried out after letting it alone in the room temperature for 1 hour. |
| PULLING | 900g tension weight supplied gradually to axial direction of terminals/lead-wires for 30 sec. | | No visual damages after test. |
| BENDING | 90 degree bending with 225g tension weight, then straightened gradually. Repeated to opposite direction. | | No visual damages after test. |
| SEALING TIGHTNESS | No observation of gas bubble after specimen put in hot water at +90+95 for 5 min. | | |
| SOLDERING DIP | Terminals/lead-wires dipped into solder melted tank at +2305 for 3sec. Dipping depth 2mm from bottom of specimens body. | | Soldering portion over 90% coverage. (After applying ROSIN flux) |
| SOLDER HEATING | Terminals/lead-wires dipped into solder melted tank at +35010 for 3 sec. | | Electrical characteristics shall be satisfied. Dipping depth 2mm from edge of terminals/lead-wires. |
| 5. ENVIRONMENTAL ENDURANCE |
| HUMIDITY | Electrical characteristics shall be satisfied after letting it alone at 602 in humidity of 9095% for 250 hours. | | |
| STORAGE IN LOW TEMPERATURE | Electrical characteristics shall be satisfied after letting it alone at -302 for 250 hours. | | |
| STORAGE IN HIGH TEMPERATURE | Electrical characteristics shall be satisfied after letting it alone at +852 for 250 hours. | | |
| TEMPERATURE CYCLE | Electrical characteristics shall be satisfied after supplying the following temperature cycle (3cycles). Temperature shift from low to high, high to low shall be done in 1/min. | | (Refer to Fig-2) |
