Tel : +44 118 979 1238
Fax : +44 118 979 1283
Email: info@actcrystals.com
In keeping with our ongoing policy of product evolvement and improvement, the above specification is subject to change without notice.
ISO9001: 2000 Registered - Registration number 6830/2
For quotations or further information please contact us at:
3 The Business Centre, Molly Millars Lane, Wokingham, Berks, RG41 2EY, UK
http://www.actcrystals.com
The ACTR3008/303.825/QCC4A is a true one-port, surface-acoustic-wave (SAW) resonator in a
surface-mount ceramic QCC4A case. It provides reliable, fundamental-mode, quartz frequency
stabilization i.e. in transmitters or local oscillators operating at 303.825 MHz.
1.Package Dimension (QCC4A)
3.Equivalent LC Model and Test Circuit
4.Typical Application Circuits
1) Low-Power Transmitter Application 2) Local Oscillator Application
Pin Configuration
1 Input / Output
3 Output / Input
2/4 Case Ground
Sign Data (unit: mm) Sign Data (unit: mm)
A 1.2 D 1.4
B 0.8 E 5.0
C 0.5 F 3.5
Issue : 1 C1
Date : JAN 05
Tel : +44 118 979 1238
Fax : +44 118 979 1283
Email: info@actcrystals.com
In keeping with our ongoing policy of product evolvement and improvement, the above specification is subject to change without notice.
ISO9001: 2000 Registered - Registration number 6830/2
For quotations or further information please contact us at:
3 The Business Centre, Molly Millars Lane, Wokingham, Berks, RG41 2EY, UK
http://www.actcrystals.com
5.Typical Frequency Response 6.Temperature Characteristics
7.Performance
7-1.Maximum Ratings
Rating Value Units
CW RF Power Dissipation 0 dBm
DC Voltage Between Terminals ±30V VDC
Case Temperature -40 to +85 °C
Soldering Temperature +250 °C
7-2.Electronic Characteristics
Characteristic Sym Minimum Typical Maximum Units
Absolute Frequency f
C
303.750 303.900 MHz
Centre Frequency
(+25°C) Tolerance from 303.825 MHz ∆fC ±75 kHz
Insertion Loss IL 1.2 1.8 dB
Unloaded Q Q
U
14,950
Quality Factor 50 Ω Loaded Q QL 1,950
Turnover Temperature T
0
25 55 °C
Turnover Frequency f
0
f
C
kHz
Temperature
Stability Frequency Temperature Coefficient FTC 0.032
ppm/°C
2
Frequency Aging Absolute Value during the First Year |fA| ≤10 ppm/yr
DC Insulation Resistance Between Any Two Terminals 1.0
MΩ
Motional Resistance R
M
15 23 Ω
Motional Inductance L
M
117.5302 µ
H
Motional Capacitance C
M
2.3371 fF
RF Equivalent
RLC Model
Shunt Static Capacitance C
0
2.25 2.55 2.85 pF
Issue : 1 C1
Date : JAN 05
Tel : +44 118 979 1238
Fax : +44 118 979 1283
Email: info@actcrystals.com
In keeping with our ongoing policy of product evolvement and improvement, the above specification is subject to change without notice.
ISO9001: 2000 Registered - Registration number 6830/2
For quotations or further information please contact us at:
3 The Business Centre, Molly Millars Lane, Wokingham, Berks, RG41 2EY, UK
http://www.actcrystals.com
iCAUTION: Electrostatic Sensitive Device. Observe precautions for handling!
1. The centre frequency, fC, is measured at the minimum IL point with the resonator in the 50 Ω test system.
2. Unless noted otherwise, case temperature TC = +25°C±2°C.
3. Frequency aging is the change in fC with time and is specified at +65°C or less. Aging may exceed the
specification for prolonged temperatures above +65°C. Typically, aging is greatest the first year after
manufacture, decreasing in subsequent years.
4. Turnover temperature, T0, is the temperature of maximum (or turnover) frequency, f0. The nominal frequency at
any case temperature, TC, may be calculated from: f = f0 [1 - FTC (T0 - TC)2].
5. This equivalent RLC model approximates resonator performance near the resonant frequency and is provided
for reference only. The capacitance C0 is the measured static (non-motional) capacitance between the two
terminals. The measurement includes case parasitic capacitance.
6. Derived mathematically from one or more of the following directly measured parameters: fC, IL, 3 dB bandwidth,
fC versus TC, and C0.
7. The specifications of this device are based on the test circuit shown above and subject to change or
obsolescence without notice.
8. Typically, equipment utilizing this device requires emissions testing and government approval, which is the
responsibility of the equipment manufacturer.
9. Our liability is only assumed for the Surface Acoustic Wave (SAW) component(s) per se, not for applications,
processes and circuits implemented within components or assemblies.
Issue : 1 C1
Date : JAN 05
