Comchip CDSF 355 B Service Manual
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SMD Switching DiodeSMD Switching Diode
SMD Dio de s Sp ec ia li st
CDSF355B
(RoHs Device)
High Speed
Features
Designe d for moun ting on sm all surf ace.
Extreme ly thin/ leadle ss packa ge.
Low leaka ge curre nt.
High moun ting cap abilit y, strong surge
withsta nd, high r eliabi lity.
Mechanical data
Case: 100 5(2512 ) standa rd packa ge,
molded pl astic.
Terminals: Gold pl ated, so lderab le per
MIL-STD-750,method 2026.
Polarit y: Indic ated by ca thode ba nd.
Mountin g positi on: Any
Weight: 0.006 gram(approx.).
1005( 251 2)
0.1 02(2. 60)
0.0 95(2. 40)
0.0 20(0. 50) Typ.
0.0 40(1. 00) Typ.
Dimensions in inches and (millimeter)
0.0 51(1. 30)
0.0 43(1. 10)
0.0 35(0. 90)
0.0 27(0. 70)
Maximum Rating (at TA=25 C unless otherwise noted)
Parameter
Repe tit ive p eak r eve rse v olt age
Reverse volt age
Ave rag e for war d cur ren t
Forw ard c urr ent ,su rge p eak
Repe tit ive p eak f orw ard c urr ent
Powe r Dis sip ati on
Stor age t emp era tur e
Junc tio n tem per atu re
8.3 ms s ing le ha lf si ne- wav e sup eri mpo sed
on rate loa d ( JED EC me tho d)
Electrical Characteristics (at TA=25 C unless otherwise noted)
Parameter
Forw ard v olt age
Reverse current
Capa cit anc e bet wee n ter min als
Reverse recovery tim e
IF = 100 m A DC
VR = 80 V
f = 1 MHZ, and 0 .5V DC re ver se vo lta ge
VR = 6V ,I F =10 m A, RL = 50 oh ms
O
Conditions
Conditions
Symbol
VR RM
VR
IO
IF SM
IF RM
PD
TS TG
Tj
O
Symbol
VF
IR
CT
Tr r
Min
-55
Min
Typ
1000
Typ
Max
90
80
100
225
300
+125
+125
Max
1.0
0.1
3
4
Unit
V
V
mA
mA
mA
mW
O
C
O
C
Unit
V
uA
PF
nS
QW- A00 09
REV:B
Page 1
SMD Switching DiodeSMD Switching Diode
RATING AND CHARACTERISTIC CURVES (CDSF355B )
SMD Dio de s Sp ec ia li st
Fig. 1 - Fo rwar d char acte rist ics
1000
100
10
1
5 C
C
C
C
12
Forw ard c urr ent ( mA )
0.1
0.0 1
0 1.00.6
75
25
25
-
0.2 0.4 0.8
Forw ard v olt age ( V)
Fig. 3 - Ca paci tanc e betw een
termi nals c hara cter isti cs
5.0
4.0
3.0
2.0
1.4
1.2
f=1M Hz
Ta = 25 C
Fig. 2 - Re vers e char acte rist ics
10u
125 C
1u
100n
10n
Reverse curr ent ( A )
1n
1.81.6
0.1 n
0 10 90 1 0020
75 C
25 C
-25 C
30
40 50 60 7 0 80
Rever se vo lta ge (V)
Fig. 4 - Cu rren t dera ting c urve
Mou nting o n glass e poxy PC Bs
100
80
60
40
1.0
0
Capa cit anc e bet wee n ter min als : ( pF)
0
QW- A00 09
15 20 2 5
10
5
Reverse v olt age : ( V)
30 35
20
Aver age f orw ard c urr ent ( % )
0
0 25 50
Ambi ent t emp era tur e ( C)
75
100 125 150
REV:B
Page 2
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