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Ordering
Through Hole
Quartz Crystals |
If
you would like all information regarding through hole crystal data in a single PDF please use this link. |
The Three Column Code (3CC) Easy Ordering System
Ordering
through hole crystals from Hy-Q International Australia could not be easier
because all the information is included on this page. To place an order or to receive a
quotation, simply contact our sales office with
the following seven items of information.
| 1 |
2 |
3 |
4 |
5 |
6 |
7 |
| Holder Style |
Overtone |
Frequency (MHz) |
Temp. Range |
Frequency Stability |
Calibration |
Load Capacitance |
| Select from the chart below. |
The chart below combines the frequency range for each overtone. |
Information
relating to these settings is given in the 3
Column Code (3CC) table. |
Please use the above headings to identify
the specific parameters of the crystal required.
Example: GJ05E represents:
Operating temperature range -10°c to +60°c, frequency stability ±5ppm, calibration
tolerance ±10ppm and a load capacitance of 30pF.
| QC49 |
3rd O/T |
36.25943 |
G |
J |
05 |
E |
- Use the links in the following table to view or
download the desired crystal data sheet including their Standard Performance
Representation in PDF format. (Recommended)
- To view thumbnails of the holder styles only, for each ESR group, use the
link in the 'Group' column
-
Holder Styles by ESR groups:
Holder |
Frequency Range (MHz) |
Group |
Style (QC) |
Fundamental |
Overtone (determines R1
(ESR)) |
| 3rd |
5th |
7th |
9th |
| A |
35 39 61 62 63 69 |
8 - 30 |
25 - 90 |
60 - 150 |
125 - 175 |
175 - 200 |
| B |
This group is allocated to cold weld products which we no longer offer |
| C |
38 68 |
16 - 30 |
40 - 90 |
70 - 150 |
125 - 175 |
N/A |
| D |
41 44 45 46 |
8 - 30 |
25 - 90 |
60 - 150 |
125 - 175 |
175 - 200 |
| E |
49 50 53 55 56 59 |
3 - 30 |
18 - 90 |
60 - 150 |
125 - 175 |
175 - 200 |
| F |
48 51 |
1 - 30 |
15 - 90 |
60 - 150 |
125 - 175 |
175 - 200 |
| G |
52 54 57 |
4 - 30 |
18 - 90 |
60 - 150 |
125 - 175 |
175 - 200 |
-
The first column consists of two
letters (GJ05E) specifying the
operating temperature range and frequency stability over that range. The stability is
quoted as a frequency tolerance in parts-per-million (ppm) relative to the actual
frequency at the reference temperature. For non temperature controlled crystal units, the
reference temperature is 25°c, otherwise it is the nominal oven temperature. Please also
consult the degree of manufacturing
difficulty chart below.
The second column is a two digit code (GJ05E) giving the preferred value of the
calibration tolerance in ppm. This is the tolerance to which the crystal frequency will be
set at the reference temperature.
The third column is a single letter (GJ05E) giving the preferred value of load
capacitance in Picofarads (pF).
First
Column |
- Second Column
- (calibration tolerance in ppm)
|
- Third Column
(load capacitance in pF)
|
- First Letter
(operating temp. range in °c)
|
- Second Letter
(frequency stability in ppm)
|
- A
- B
- C
- D
- E
- F
- G
- H
- J
- K
- L
|
- -55 to +105
- -40 to +90
- -30 to -80
- -25 to +75
- -20 to +70
- -15 to +65
- -10 to +60
- -5 to +55
- 0 to +50
- +5 to +45
- +10 to +40
|
- A
- B
- C
- D
- E
- F
- G
- H
- J
- M
- K
- L
|
- ±100
- ±50
- ±30
- ±25
- ±20
- ±15
- ±10
- ±7.5
- ±5
- ±4
- ±3
- ±2
|
- 01
- 02
- 03
- 04
- 05
- 06
- 07
- 08
- 09
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
|
- ±50
- ±30
- ±20
- ±15
- ±10
- ±7.5
- ±5
- +45 to +65
- +35 to +55
- +25 to +45
- +20 to +40
- +15 to +35
- +10 to +30
- +5 to +25
- 0 to +20
- -5 to +15
- -15 to +5
- -20 to 0
- -25 to -5
- -30 to -10
- -35 to -15
- -40 to -20
- -45 to -25
- -50 to -30
- -55 to -35
- -60 to -40
- -65 to -45
- -70 to -50
- -75 to -55
|
- A
- B
- C
- D
- E
- F
- G
- H
- J
- K
- L
- M
- N
- P
- Q
- R
- S
- T
- U
- V
- W
- X
- Y
- Z
|
- 10
- 15
- 20
- 25
- 30
- 32
- 40
- 45
- 50
- 60
- 70
- 80
- 90
- 100
- 18
- 150
- series resonant
- 35
- 55
- 65
- 75
- 85
- 95
- 12
|
Ovenised crystal codes
Stability ±0.5 ppm per °c over ±2°c |
| Code |
Temp°c |
- TR
- TS
- TT
- TU
- TV
- TW
- TX
- TY
- TZ
|
- 45
- 50
- 55
- 60
- 65
- 70
- 75
- 80
- 85
|
|
It is important to note that crystal unit cost increases
with the degree of manufacturing difficulty. As shown, the degree of manufacturing
difficulty increases rapidly as requirements on operating temperature range (first letter
of first column) and frequency tolerance (second letter of first column) are tightened.
-
|
In cases where the Hy-Q 3-Column ordering code is
insufficient to describe a particular set of requirements, the following essential data is
required for manufacture:
- Nominal frequency: ...............MHz
- Overtone order: Fund. or 3rd or 5th or 7th or 9th
- Holder style: QC____
- Circuit condition: Series (s) or Load resonant (..........pF load)
- Calibration tolerance: ± ..........ppm
- Operating temperature: ..........°c
- Operating temperature range: .......... to ..........°c
- Tolerance over temperature range: ± ..........ppm
In addition, the following parameters may need to be specified:
- Maximum equivalent series resistance (ESR): ..........ohms max.
- Shunt capacenitance (Co): ..........pF ±..........%
- Motional capacenitance (C1): ..........fF ±..........%
- Motional inductance (L1): ..........mH ±..........%
- Drive level: ..........mW
- Ageing (per year): ±..........ppm max.
Our engineers will be pleased to assist in formulating a specification
appropriate for any application and discuss the theoretical and practical limitations of
any parameters.
IMPORTANT NOTE
When ordering crystal units with a frequency available in more than one mode, it
is essential to specify both the frequency and the mode. For example, 75 MHz falls within
the 3rd and 5th overtone orders. When ordering a 75 MHz crystal it is essential to quote
the mode, because the parameters of the two types of crystal unit are different. The
minimum information required when ordering is:
- Nominal frequency (MHz)
- Overtone order (fundamental, 3rd, 5th, 7th, 9th)
- Holder style
- 3-Column ordering code or other information
- Quantity required
|
|
To place an order using the above information, or
for any enquiry, please contact our sales office.
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