868MHz SAW Resonator

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868MHz SAW Resonator

HDR868.35M

Scope
This specification covers the characteristics of 1-port SAW resonator with 868MHz centre frequency used for remote-control security.

Electrical Specification of 868MHz SAW Resonator
DC Voltage VDC 10V
AC Voltage Vpp 10V50Hz/60Hz
Operation Temperature -20 ℃ to +85℃
Storage Temperature -45 ℃ to +85℃
RF Power Dissipation 0dBm
Table 1
Electronic Characteristics of 868MHz SAW Resonator

Item Unit Minimum Typical Maximum
Center Frequency MHz 868.100 868.350 868.600
Insertion Loss (in 50ohm system) dB
1.1 1.5
Quality Factor Unload Q
12, 800
50 Ω Loaded Q
2,000
Temperature Stability Turnover Temperature 24 39 54
Turnover Frequency KHz
fo+207
Frequency Temperature Coefficient ppm / ℃ 2
0.037
Frequency Aging ppm /yr
≤ ± 10
DC. Insulation Resistance M Ω 1.0

RF Equivalent RLC Model Motional Resistance R1 Ω
15 23
Motional Inductance L1 µ H
82.3481
Motional Capacitance C1 pF
1.64228
Pin 1 to Pin 2 Static Capacitance pF 1.7 2.7
Transducer Static Capacitance pF
10.83
Dimension of 868MHz SAW Resonator Test Circuit of 868MHz SAW Resonator

B# , E# Input/Output
A# ,C#,F #,D# Ground

Environmental Characteristics of 868MHz SAW Resonator
1.Temperature cycling
The 868MHz SAW resonator must be in a place with low temperature, -40 ℃ for thirty minutes, following by a high temperature of 25℃ for five minutes and then a higher temperature of 85℃ for 30 minutes. When the device is released into a room with normal temperature conditions for 1 to 2 hours prior to the measurement, it shall meet the specifications in table 1.
2. Resistance to solder heat
Submerge the 868MHz SAW resonator terminals into the solder bath at 260℃ ±5℃ for 10 ± 1 second. Then release the device into a room with normal temperature conditions for 4 hours, it shall meet the specifications in table 1.
3. Solderability
Submerge the device terminals into the solder bath at 245℃ ±5℃ for five seconds. More than 95% area of the soldering pad must be covered with new solder; the 868MHz SAW resonator shall meet the specifications in table 1.
4. Mechanical shock
Drop the 868MHz SAW resonator randomly onto the concrete floor from a height of 1 m three times. The filter shall fulfil the specifications in table 1.
5. Vibration
Subject the device to vibration for two hours each in x, y and z axes with amplitude of 1.5 mm at 10 to 55 Hz. The filter shall fulfil the specifications in table 1.
6. Gross Leak Test
Submerging the SAW resonator to absolute alcohol for at least one minute at 70℃ to 75℃, no bubbles should be seen. Measuring the leak rate, failure is defined if the leak rate exceeds 1X10-5 atm cc/sec Helium. Refer to MIL – STD - 202F, method 112 for test details.
7. Fine Leak Test
Failure is defined if the leak rate of the SAW resonator exceeds 1X10-5 atm cc/sec Helium. Refer to MIL – STD - 202F, method 112 for test details.

Remarks for 868MHz SAW Resonator Usage
1. Static voltage
Please avoid static voltage between signal load and ground, it may cause deterioration or destruction of the SAW resonator components.
2. Ultrasonic cleaning
Please avoid ultrasonic cleaning, it may cause deterioration or destruction of the SAW resonator components.
3. Soldering
Please avoid soldering different parts of the SAW resonator components, just leads may be soldered.

Packing of 868MHz SAW Resonator
1. Dimensions
(1) Carrier Tape: Figure 1
(2) Reel: Figure 2
(3) The 868MHz SAW resonator shall be packed properly to avoid damage during transportation or storage.
2. Reeling Quantity
1000 pieces/reel 7"
3000 pieces/reel 13"
3. Taping Structure
(1) The tape shall be wrapped around the reel in the direction shown below.

(2) Label
Device Name
User Product Name
Quantity
Lot No.

(3) Leader part and vacant position specifications.

Tape Specifications of 868MHz SAW Resonator
1. Tensile Strength of Carrier Tape: 4.4N/mm width
2. Top Cover Tape Adhesion(See the below figure)
(1) Pull off angle: 0~15º
(2) Speed: 300mm/min.
(3) Force: 20~70g

[Figure 1] Carrier Tape Dimensions

[Unit: mm]
W F E P0 P1 P2 D0 D1 t1 t2 A B
12.0 ±0.3 5.5 ±0.05 1.75 ±0.1 4.0 ±0.1 4.0 ±0.1 2.0 ±0.05 Ø1.5 ±0.1 Ø1.0 ±0.25 0.3 ±0.05 1.25 ±0.1 3.3 ±0.1 3.3 ±0.1

[Figure 2]
Shoulder is a specialized 868MHz SAW resonator manufacturer in China. We provide a comprehensive range of products, including a SAW filter, crystal resonator, Pico repeater, TCXO and others.

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