EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 info@euroquartz.co.uk www.euroquartz.co.uk
EURO
QUARTZ
14 pin Dual-in-Line MIL SPECIFICATION
Page 1 of 2
DESCRIPTION
EQXO-1000BM and 3000BM series oscillators are designed and
manufactured by Euroquartz Ltd for aerospace, defence and similar
applications where high-reliability clock oscillators are required. The
oscillator is produced in the industry-standard 14 pin DIL oscillator
package. EQXO-1000BM series oscillators incorporates a custom
designed, all-ceramic oscillator substrate and a ruggedized three-
point crystal mounting system inside a hermetically-sealed metal
package. The specification ensures that the oscillators provide an
accurate and reliable source of clock signals regardless of the severity
of the environment in which it operates. EQXO-3000BM series
oscillators are identical to EQXO-1000BM series but have 14 pins for
extra mechanical security.
RADIATION TOLERANCE
For equipment to be used in space or the upper atmosphere the
EQXO-1000BM and 3000BM series oscillators may be produced in a
radiation tolerant version. Designated EQXO-x000BMH, this variant of
the oscillator will withstand ionizing radiation to resist electrical
failures for a total radiation dose of 40krad(SI).
OUTLINE & DIMENSIONS
Model No: EQXO-1000BM or 3000BM
Frequency Range: 30kHz to 70.0MHz
Calibration Tolerance at 25°C: ±10ppm to ±25ppm
Frequency Stability*
EQXO-1100BM: ±100ppm over -55° to +125°C
EQXO-1050BM: ±50ppm over -55° to +125°C
Supply Voltage: +5.0 Volts DC±10%
Output: CMOS, 50pF/10 TTL loads
Ageing: ±3pm max in first year
Symmetry: 45%/55%
Operating Temperature Range: -55° to +125°C
Storage Temperature Range: -55° to +125°C
Construction: Ceramic substrate, resistance
welded can.
* Frequency stability is inclusive of frequency adjustment at 25°C and
any variations due to load change, ageing, supply voltage change
(±10%) and variations attributable to shock and vibration, (see
Qualification Approval and Environmental Specification.)
SPECIFICATION
30kHz ~ 1.0MHz 10 10
1.0MHz ~ 4.0MHz 15 10
4.0MHz ~ 20MHz 20 10
20MHz ~ 35MHz 35 10
35MHz ~ 50MHz 40 5
50MHz ~ 65MHz 70 5
Frequency Range
Supply Current
(mA max.)
Rise/Fall Time
(ns max.)
CURRENT CONSUMPTION /RISE & FALL TIMES
FEATURES
Ceramic substrate and ruggedized mounts for high reliability
Industry-standard 14 pin DIL package, 4 pin or 14 pin
Full screening to MIL-O-55310C, Class B available
·Radiation tolerant version favailable for space applications
EQXO-1000BM and 3000BM OSCILLATORS
EQXO-1050BM ±10ppm ±50ppm No 4
EQXO-1100BM ±25ppm ±100ppm No 4
EQXO-1050BMH ±10ppm ±50ppm Yes 4
EQXO-1100BMH ±25ppm ±100ppm Yes 4
EQXO-3050BM ±10ppm ±50ppm No 14
EQXO-3100BM ±25ppm ±100ppm No 14
EQXO-3050BMH ±10ppm ±50ppm Yes 14
EQXO-3100BMH ±25ppm ±100ppm Yes 14
Model Number
Calibration
Tolerance
at 25°C
Frequency
Stability
-55° to +125°C
Radiation
Tolerant
MODEL NUMBERS
PART NUMBER GENERATION
Frequency / Model Number / Screening (if required)
Example: 10.000MHz EQXO-1100BMH Screened
MIL SCREENING
EQXO-1000BM series oscillators may be ordered screened i.a.w. the
schedules detailed in 'Qualification Approval and Environmental
Specification' on page 2 of this specification.
No. of
Pins
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 info@euroquartz.co.uk www.euroquartz.co.uk
EURO
QUARTZ
Page 2 of 2
OK00032A 32.7680kHz ±100ppm -55~+125°C
OK00080A 80.0000kHz ±100ppm -55~+125°C
OK00100A 100.000kHz ±100ppm -55~+125°C
OK00307A 307.200kHz ±100ppm -55~+125°C
OK00500A 500.000kHz ±100ppm -55~+125°C
OK01000A 1.00000MHz ±100ppm -55~+125°C
OK01228A 1.22880MHz ±100ppm -55~+125°C
OK03686A 3.68640MHz ±100ppm -55~+125°C
OK04915A 4.91520MHz ±100ppm -55~+125°C
OK06000A 6.00000MHz ±100ppm -55~+125°C
OK06400A 6.40000MHz ±100ppm -55~+125°C
OK08000A 8.00000MHz ±100ppm -55~+125°C
OK09216A 9.21600MHz ±100ppm -55~+125°C
OK10000A 10.0000MHz ±100ppm -55~+125°C
OK12000A 12.0000MHz ±100ppm -55~+125°C
OK14745A 14.7456MHz ±100ppm -55~+125°C
OK15375A 15.3750MHz ±100ppm -55~+125°C
OK16000A 16.0000MHz ±100ppm -55~+125°C
OK18000A 18.0000MHz ±100ppm -55~+125°C
OK20000A 20.0000MHz ±100ppm -55~+125°C
OK24000A 24.0000MHz ±100ppm -55~+125°C
OM025A00 25.0000MHz ±100ppm -55~+125°C
OM030A00 30.0000MHz ±100ppm -55~+125°C
OM032A00 32.0000MHz ±100ppm -55~+125°C
OM033A33 33.3330MHz ±100ppm -55~+125°C
OM040A00 40.0000MHz ±100ppm -55~+125°C
OM050Z00 50.0000MHz ±100ppm -55~+125°C
OM064Z00 64.0000MHz ±100ppm -55~+125°C
Stock Number
Frequency Specification
STANDARD FREQUENCIES & SPECIFICATIONS QUALIFICATION APPROVAL &
ENVIRONMENTAL SPECIFICATION
Vibration: 10Hz to 60Hz, 0.75mm displacement,
60Hz to 2000Hz, 98.1m/s2 acceleration
30 minutes in each of three mutually-
perpendicular planes.
Shock: 981 m/s2 for 6ms, three shocks in each
direction along three mutually-
perpendicular planes.
Thermal Shock: MIL-STD-202 Method 107
Storage Temperature: -55°C for 24 hrs., then +150°C, 24 hrs.
Moisture Resistance: 85% Relative Humidity at 85°C for 24hrs.
Seal: Fine leak not to exceed 1x10-8mB litres
of helium leakage, then Gross Leak Test.
Terminal Strength: MIL-STD-202 Method 211
Solerability: MIL-STD-202 Method 208
SCREENING
Screening in accordance with MIL-O-55310C Class B.
All devices are 100% tested to the following conditions:
Stabilization Bake: Vacuum storage at 150°C for 24 hrs.
Temperature Cycling: -55°C to +125°C, 10 cycles
Constant Acceleration: 49000m/s2 for 1 minute inY1 plane.
Seal: Fine leak not to exceed 1x10-8mB litres
of helium leakage, then Gross Leak Test.
Dynamic Burn-in: 125°C for 168hrs.
Electrical Test: Frequency, output waveform, output
Voltage/power, input current/power.
RADIATION TOLERANT VERSIONS
Radiation tolerant versions of EQXO-1000BM series oscillators have
been designed and are manufactured to ensure no functional failures
will occur in any electrical test for a total radiation dose of 40krad(Si).
EQXO-1000BM series oscillators so manufactured have the letter 'H'
appended to the 'BM' in the part number suffix:
20.000MHz EQXO-1100BMH
A paper is available describing the general problems encountered in
the design of electrical systems needing to withstand radiation
encountered in the upper atmosphere and space.
14 pin Dual-in-Line MIL SPECIFICATION
EQXO-1000BM and 3000BM OSCILLATORS
