4MHZ HC-49S DIP Low Frequency Crystal Oscillator and Electronic
Component
Product Application
1 , The air conditioning
2 , Test instruments/ultrasound
3 , Electric appliances
product features
PCB VS Crystal Matching Test for Free
A steady oscillation (pulse) signal given to the circuit (strictly
a selection) of a certain frequency is passed through the pulse
count.
Operating Temperature Range:
-20℃~70℃
Crystal Frequency & Resistance will be tested under the following
conditions,
Unless extra requirments:
standard temperature(25±2℃) after heat balance.
Mechanical test:
The quartz crystal unit shall be subjected to normal atmospheric
conditions for 1hr before being tested.
Dropping Test:
The Units are measured for its frequency and resistance in
accordance with Table1 & without mechanical damage,after allowing
the crystal to fall freely.From 75 cm of height 3 times on the
firmed wood.
Vibration Test:
A. Test surface: 30mm thick hard board;
B. Drop height: 75cm;
C. Drop times: 3 times;
D. Begins to drop posture: the leading end is upward;
E. Initial and final test items: frequency, resistance
Sealing Tightness:
Find Lead Test:≤1×10-8atm·cc/S by Helium mass-mass-spectrometer detector,and vacuum and
reach 1×10-3Pa；
Resistance to Soldering Heat:
The Units are measured for its frequency and resistance in
accordance with Table 1 after dipping into molten solder with the
temperature of 320℃±10℃；For 3~4 secs and at a depth up to a point
2.0mm from the base root.
Product specification
| Type | 49S |
| Frequency Range(MHZ) | 4.000MHZ |
| Frequency Tolerance(at25℃) | ±10PPm ,±2PPm at25℃+/-2℃ |
| Frequency Stability vs. Temp(FL-T) | ±10PPm,±20PPm ,±30PPm |
| Operating Temperature range | -20~+70℃ -40~+85℃ |
| Storage Temperature range | -45~+80℃ |
| Temperature Characteristics | ±10PPm ±20PPm |
| Load Capacitance | 8 to 20 Pf or Serles |
| Aging | ±3 PPm/year |
| Insulation Resistance | 500MΩ(DC100V±15V) |
product advantage
1. Our products are all original and new from manufacturer. It must be
work if the model number is correct.
2. We have advanced testing equipments
3. Get the international standard management sysem ISO9001,RoHS
4. All products before sending client,we make 72 hours aging test
5. We have 180days warranty
6. During the guarantee period, if the items you purchased from our
store are out of perfected quality, pls notify us within 3 days
after delivery, we will return the new products when we got your
message.
Dimension
FAQ
Packing
200pcs/bag .
Samples and technical support can be provided free of charge.
