915MHz SAW Resonator

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915MHz SAW Resonator

HDR915M-S6

Scope
This specification covers the characteristics of 1-port SAW resonator with 915MHz centre frequency used for remote-control security.

Electrical Specification of 915MHz 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 915MHz SAW Resonator

Item Unit Minimum Typical Maximum
Center Frequency MHz 914.750 915.000 915.250
Insertion Loss (in 50ohm system) dB
1.5 3.5
Quality Factor Unload Q
12, 800
50 Ω Loaded Q
2,000
Temperature Stability Turnover Temperature
39
Turnover Frequency KHz
fo+2.7
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
18 26
Motional Inductance L1 µ H
86
Motional Capacitance C1 pF
1.5
Pin 1 to Pin 2 Static Capacitance pF 1.7 2..0 2.3
Transducer Static Capacitance pF
1.9
Dimension of 915MHz SAW Resonator Test Circuit of 915MHz SAW Resonator

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

Environmental Characteristics of 915MHz SAW Resonator
1. High temperature exposure
Placing the 915MHz SAW resonator at 85 ℃ for sixteen hours and then releasing the filter into a room with normal temperature conditions for twenty-four hours prior to the measurement, it shall fulfil the specifications in table 1
2. Low temperature exposure
Placing the 915MHz SAW resonator at -20 ℃ for sixteen hours and then releasing the device into a room with normal temperature conditions for twenty-four hours prior to the measurement, it shall fulfil the specifications in table 1
3. Temperature cycling
The 915MHz 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 thirty minutes. When the device is released into a room with normal temperature conditions for one or two hours prior to the measurement, it shall meet the specifications in table 1.
4. Resistance to solder heat
If the 915MHz SAW resonator terminals are immerse no closer than 1.5 mm into the solder bath at 260℃ ±10℃ for 10±one second and then release the device into a room with normal temperature conditions for four hours, it shall meet the specifications in table 1.
5. 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 915MHz SAW resonator shall meet the specifications in table 1.
6. Mechanical shock
Drop the 915MHz SAW resonator randomly onto the concrete floor from a height of 1 m three times. The filter shall fulfil the specifications in table 1.
7. 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.
8. Lead fatigue
(1) Pulling test
If a vertical weight (1Kg) is applied to the 915MHz SAW resonator along with the direction of lead without any shock for five or ten seconds, the device shall satisfy all the initial characteristics.
(2) Bending test
The 915MHz SAW resonator shall be subject to withstand against 90º bending with 450g weight in the direction of thickness. This operation shall be done toward both directions; the device shows no evidence of damage and shall satisfy all the initial electrical characteristics.

Remarks for 915MHz 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 915MHz SAW Resonator
1. Dimensions
(1) Carrier Tape: Figure 1
(2) Reel: Figure 2
(3) The 915MHz 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 915MHz 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 Ø 1.0 ±0.25 0.3 ±0.05 1. 25 ±0.1 3.3 ±0.1 3.3 ±0.1

[Figure 2]
As an experienced 915MHz SAW resonator manufacturer in China, we not only provide SAW resonator but also offer RF module, SAW filter, crystal resonator and TCXO among others.

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