New And Original Tuning Fork Crystal Oscillator 32.768K 3*8
32.768KHZ JU-308
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.. PCB VS Crystal Matching Test for Free
4. Get the international standard management sysem ISO9001,RoHS
5. Custom-made Frequencies Due to we have our own Wafer Production Line.All products before sending client,we make 72 hours aging test
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.
Product features
The precision of the crystal varies greatly within the range of
temperature, which will slow the clock (in some cases make the
clock faster). For the most electronic applications, the RTC with
the 32.768kHz tuning fork is the standard time reference. RTC
determines the time and date by the second count, which requires a
clock signal of the 1Hz from the 32.768kHz crystal oscillator. The
current time and date are stored in a set of registers and accessed
through a communication interface.
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:
The Units are measured for its frequency and resistance in
accordance with Table 1&without mechanical damage afer
subjectiong to 2hrs of vibration with 0.75mm amplitude with 10~55Hz
frequency sweep 20 times.
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 application
32.768K is the base frequency of a clock, 32768 equals 2 of the 15
times. So basically there's a computer phone camera, and the
products with timing functions are used to this 32.768K.
Product specification
| Type | DIP 3*8 |
| Frequency Range(KHZ) | 32.768KHZ |
| Frequency Tolerance(at25℃) | ±20PPm at25℃+/-2℃ |
| Frequency Stability vs. Temp(FL-T) | -0.04×10-6/℃2 Max |
| Operating Temperature range | -20~+70℃ -40~+85℃ |
| Storage Temperature range | -45~+80℃ |
| Temperature Characteristics | ±20PPm |
| Load Capacitance | 12.5 Pf or Serles |
| Aging | ±3 PPm/year |
| Insulation Resistance | 500MΩ(DC100V±15V) |
Refluence examination
Frequency change:≤±5ppm
Temperature Shock:
The Units are measured for its frequency and resistance in
accordance
with Table 1 .
FAQ
Packing
1000pcs/package.
Samples and technical support can be provided free of charge.
