EX-420_12 Datasheet, PDF (4/5 Pages) Vectron International, Inc – Evacuated Miniature Crystal Oscillator

Recommended Re ow Pro le
T_p
T_L
Ts
tp
Ramp up
t_L
Critical Zone
T_L to T_p
Ramp dow n
Ts
ts
preheat
25
t 25°C to peak
Time
Profile Feature
Sn-Pb Assembly
Profile Feature
Sn-Pb Assembly
PRECAUTION: Series shall not expose to temperature higher than 230°C. If exposing to temperature higher than
230°C, stability and power consumption may permanently degrade.
Average ramp-up rate (TL to Tp)
3°C/second max. Time 25°C to Peak Temperature 4 minutes max.
Preheat -Temperature Min Tsmin) 135°c
-Temperature Min Tsmax) 155°c
-Time (min to max) (ts) 60-90 seconds
Time maintained above
- Temperature (TL)
- Time (tL)
183°C
45-60 seconds
Tsmax to TL - Ramp-up Rate
3°C/second max.
Time maintained above
- Temperature (TL) 183°C
- Time (tL)
45-60 seconds
Time within 5°C of actual
Peak Temperature (tp)
10-20 seconds max.
Peak Temperature (Tp)
max 220°C
Ramp-down Rate
6°C/second max.
Note: All temperatures refer to topside of the package, measured on the package body surface.
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com