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

HOW TO ORDER SWCX1 SWEPT CRYSTALS

SWCX1 - S

-

S

- C

-

SM1 - 20.0M , 100

/ 100 / –

/

I

Screening per

option code:

S = Space

M = Military

E = Engineering

'S' for

special or

custom

design

Leaded

03

Surface Mount

SM1

SM2

SM3

Frequency

M = MHz

Calibration

Tolerance

@25°C

(in ppm)*

Temp. Range

C = -10° ~ +70°C

I = -40° ~ +85°C

M = -55° ~ +125°C

S = Customer specified

Frequency

Stability over

temperature

(in ppm)*

SWCX1 SWEPT QUARTZ CRYSTALS

Radiation-Resistant Miniature Crystals

8MHz to 250MHz

Swept

Quartz

Crystal

'C' =

Ceramic

Lid

Code

Item

Method

Comments

S

M

E

X

X

X

Made with swept quartz

X

X

Internal visual (pre-seal)

Company internal standard

X

PIND testing

MIL-STD-883 Method 2020 Cond. A

Performed in both width and thickness

directions

X

Radiographic inspection

MIL-STD-202 Method 209

X

X

Unwanted modes

MIL-PRF-3098

Spurious mode ratio 2:1 or greater

X

X

Low temperature storage

MIL-PRF-3098

Resistance must meet specification at this

low temperature.

X

X

Frequency and resistance over

operating temperature range

MIL-PRF-3098

Measure every 2.5 degree C or tighter

over operating temperature range;

frequency and resistance must meet

specification.

X

X

X

Accelerated ageing

105 degree C for a minimum of 160 hours

Frequency and resistance must meet

specification after ageing; maximum

allowed change in series frequency 5ppm

X

X

X

Seal test (fine leak)

MIL-STD-883 Method 1014 Cond. A1

X

X

X

Seal test (gross leak)

MIL-STD-883 Method 1014 Cond. C

X

X

X

External visual (post seal)

Company internal standard

Page 2 of 2

STANDARD TESTS AND SCREENING OPTIONS

Notes:

S: for space-based applications.

M: for military appl.ications (MIL-PRF-3098)

E: For engineering prototypes and applications not

requiring additional screening.

-

/

-

/ 200 /

I

Or:

Temp. Range

C = -10° ~ +70°C

I = -40° ~ +85°C

M = -55° ~ +125°C

S = Customer specified

Total

frequency

tolerance

(ppm)