22a102b - Accelerated Moisture Resistance Unbiad Autoclave

更新时间:2023-06-15 16:20:58 阅读: 评论:0

JESD22-A102-B
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TEST METHOD A102-B
ACCELERATED MOISTURE RESISTANCE - UNBIASED AUTOCLAVEsmash hit
(F r o m J E D E C C o u n c i l B a l l o t J C B-90-32,f o r m u l a t e d u n d e r t h e c o g n i z a n c e o f J C-14.1C o m m i t t e e o n R e l i a b i l i t y T e s t M e t h o d s f o r Packaged Devices. )
1.PURPOSE
The“A c c e l e r a t e d M o i s t u r e R e s i s t a n c e T e s t”i s p e r f o r m e d f o r t h e p u r p o s e o f e v a l u a t i n g t h e m o i s t u r e r e s i s t a n c e o f n o n h e r m e t i c p a c k a g e d s o l i d s t a t e d e v i c e s.I t e m p l o y s s e v e r e c o n d i t i o n s o f p r e s s u r e,h u m i d i t y a n d t e m p e r a t u r e t h a t a c c e l e r a t e t h e p e n e t r a t i o n o f m o i s t u r e t h r o u g h t h e e x t e r n a l p r o t e c t i v e m a t e r i a l(e n c a p s u l a n t o r s e a l)o r a l o n g t h e i n t e r f a c e b e t w e e n t h e e x t e r n a l p r o t e c t i v e m a t e r i a l a n d t h e m e t a l l i c c o n d u c t o r s t h a t p a s s t h r o u g h i t.T h i s t e s t i s d e s t r u c t i v e;i t m a y*b e u s e d f o r q u a l i f i c a
t i o n,l o t acceptance and as a product monitor.
2. APPARATUS
T h e t e s t r e q u i r e s a p r e s s u r e c h a m b e r c a p a b l e o f m a i n t a i n i n g a s p e c i f i e d t e m p e r a t u r e,p r e s s u r e a n d r e l a t i v e h u m i d i t y.
2.1D e v i c e s U n d e r S t r e s s
D e v i c e s u n d e r s t r e s s s h a l l**b e n o c l o s e r t h a n3c m f r o m t h e i n t e r n a l c h a m b e r s u r f a c e,a n d m u s t***n o t b e s u b j e c t e d t o d i r e c t r a d i a n t h e a t f r o m h e a t e r s.
2.2 Ionic C o n t a m i n a t i o n
Ionic contamination of the test apparatus and storage chamber shall
b e
c o n t r o l l e
d t o a v o i d t
e s t a r t i
f a c t s.
2.3D i s t i l l e d o r D e i o n i z e d W a t e r
D i s t i l l e d o r d e i o n i z e d w a t e r w i t h a m i n i m u m r e s i s t i v i t y o f1 megohm-cm at room temperature shall be ud.
*The word may is to be understood as permissive.
**The word shall is to be understood as m a n d a t o r y.
***T h e w o r d m u s t i s c a u t i o n a r y i n t h e s e n s e t h a t t h e s t a t e d
a c t i o n i s e s s e n t i a l t o s u c c e s s f u l a c h i e v e m e n t o f a p u r p o s e.
experiment怎么读JESD22-A102-B
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3. TEST CONDITIONS
T h e t e s t c o n d i t i o n s c o n s i s t o f a t e m p e r a t u r e,v a p o r p r e s s u r e, r e l a t i v e h u m i d i t y a n d d u r a t i o n s p e c i f i e d b y a l e t t e r c o d e.
3.1T e m p e r a t u r e a n d R e l a t i v e H u m i d i t y
Temperature R e l a t i v e Vapor
(D r y B u l b)H u m i d i t y*P r e s s u r e
(°C)(%)(p s i g)modal
121 ± 110015±1
*F o r i n f o r m a t i o n o n l y.个人陈述范文
3.2D u r a t i o n
The test conditions and durations are shown below.T h e c o n d i t i o n s o f t e m p e r a t u r e a n d p r e s s u r e s h a l l n o t b e i n t e r r u p t e d f o r m o r e t h a n o n e h o u r a f t e r e a c h24h
o u r i n t e r v a l,u n l e s s i n t e r i m r e a d o u t s a r e s p e c i f i e d i n t h e a p p l i c a b l e p r o c u r e m e n t d o c u m e n t.
rectusTEST C O N D I T I O N DU RATION (HOURS)
A24(-0, +2)英语四级阅读
B48(-0, +2)
c96(-0, +5)
D168(-0, +5)
E240(-0, +8)
F336(-0, +8)
4. PROCEDURE
The test devices shall be mounted in a manner which expos them t o t h e s p e c i f i e d c o n d i t i o n s o f t e m p e r a t u r e,h u m i d i t y a n d p r e s s u r e.
E x p o s u r e o f d e v i c e s t o e x c e s s i v e l y h o t,d r y a m b i e n t s s h a l l b e avoided, particularly during stress ramp-up, ramp-down and the pre-r e a d o u t d r y i n g p e r i o d.
4.1T e s t D u r a t i o n
vcr是什么意思T h e t e s t d u r a t i o n i n t e r v a l b e g i n s w h e n t h e c h a m b e r r e a c h e s t h e t e m p e r a t u r e a n d v a p o r p r e s s u r e s p e c i f i e d i n  3.1,a n d e n d s a t t h e beginning of ramp-down.
JESD22-A102-B
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4.2R e a d o u t
E l e c t r i c a l t e s t s s h a l l b e p e r f o r m e d n o t s o o n e r t h a n t w o h o u r s,a n d n o t l a t e r t h a n48h o u r s,after the end of the ramp-down with room t e m p e r a t u r e t e s t i n g d o n e f i r s t i n t h e s e q u e n c e o f t e s t i n g.
C o n d e n s e d m o i s t u r e o n t h e e x t e r i o r s u r f a c e o f t h e d e v i c e p a c k a g e m a 内野
y b e w i p e d o f f,b u t c l e a n i n g o f t h e d e v i c e p a c k a g e i s n o t a l l o w e d.T h e d e v i c e l e a d s m a y b e m e c h a n i c a l l y c l e a n e d t o m a k e
e l e c t r i c a l c o n t a c t.
4.3I n t e r i m R e a d o u t
F o r i n t e r i m r e a d o u t s,w h e n s p e c i f i e d i n t h e a p p l i c a b l e p r o c u r e m e n t document,d e v i c e s s h a l l b e r e t u r n e d t o s t r e s s w i t h i n96h o u r s o f the end of ramp-down.
NOTE:The u of interim readouts may produce test results that
d i f f
e r
f r o m t h e r e s u l t s o f c o n t i n u o u s t e s t i n
birdmang f o r t
h e
s a m e t o t a l t i m e p e r i o d.
4.4H a n d l i n g
S u i t a b l e h a n d-c o v e r i n g s h a l l b e u s e d t o h a n d l e d e v i c e s a n d t e s t f i x t u r e s.C o n t a m i n a t i o n c o n t r o l i s i m p o r t a n t i n a n y h i g h l y-
a c c e l e r a t e d m o i s t u r e s t r e s s t e s t.
5. FAILURE CRITERIA
A device will be considered to have failed the accelerated moisture r e s i s t a n c e t e s t,i f p a r a m e t r i c l i m i t s a r e e x c e e d e d,o r i f f u n c t i o n a l i t y c a n n o t b e d e m o n s t r a t e d u n d e r n o m i n a l a n d w o r s t-c a s e
c o n
d i t i o n s a s s p
e c i
f i e d i n t h e a p p l i c a b l e p r o c u r e m e n t d o c u m e n t o r
d a t a s h
e e t.
6. SAFETY
F o l l o w e q u i p m e n t m a n u f a c t u r e r’s r e c o m m e n d a t i o n a n d l o c a l s a f e t y r e g u l a t i o n s.
7. SUMMARY
T h e f o l l o w i n g d e t a i l s s h a l l b e s p e c i f i e d i n t h e a p p l i c a b l e procurement document:
(a)T e s t c o n d i t i o n l e t t e r.
(b)M e a s u r e m e n t s a f t e r t e s t.
(c)S a m p l e s i z e-a c c e p t a n c e n u m b e r.
(d)T i m e(s)o f i n t e r i m r e a d o u t(s),i f r e q u i r e d.销售具备的素质

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