Page 1
BAR42FILM
SMALL SIGNAL SCHOTTKY DIODES
DESCRIPTION
General purpose metal to silicon diodes featuring
very low turn-on voltage and fast switching.
K
BAR42FILM
BAR43FILM
K
BAR43CFILM
BAR43/A/C/SFILM
A
K1
K2
K1
A2
A2
N.C.
A
BAR43AFILM
A1
K2
A1
BAR43SFILM
SOT-23
(Plastic)
ABSOLUTE RATINGS(limiting values)
Symbol Parameter Value Unit
V
RRM
I
I
FSM
P
T
stg
Tj Maximum operating junction temperature * 150
T
Note 1: for double diodes, Ptot is the total power dissipation of both diodes.
dPtot
*:
dTj Rth j a
Repetitive peak reverse voltage 30 V
Continuous forward current 100 mA
F
Surge non repetitive forward current tp=10ms sinusoidal 750 mA
Power dissipation (note 1) T
tot
=25°C 250 mW
amb
Maximum storage temperature range - 65 to +150
Maximum temperature for soldering during 10s 260
L
<
thermal runaway condition for a diode on its own heatsink
−1()
°C
°C
°C
THERMAL RESISTANCE
Symbol Test conditions Value Unit
R
th(j-a)
* Mounted on epoxy board with recommended pad layout.
Junction-ambient * 500
° C/W
August 2001- Ed: 2B 1/4
Page 2
BAR42FILM BAR43/A/C/SFILM
ELECTRICAL CHARACTERISTICS
STATIC CHARACTERISTICS
Symbol Test Conditions Min. Typ. Max. Unit
V
BR
VF*
IR** Tj = 25° CV
Tj = 25° C
Tj = 25° C
IR= 100µ A
BAR 42FILM IF= 10 mA 0.35 0.4 V
30 V
IF= 50 mA 0.5 0.65
BAR 43FILM IF= 2 mA 0.26 0.33
IF= 15 mA 0.45
All IF= 100 mA 1
= 25V 500 nA
R
Tj = 100° C 100
µ A
Pulse test: * tp = 380µs, δ <2%
** tp = 5 ms, δ <2%
DYNAMIC CHARACTERISTICS
Symbol Test Conditions Min. Typ. Max. Unit
CT j = 2 5° CV
trr Tj = 25° CI
= 1V F = 1MHz 7 pF
R
=10mA IR=10mA
F
5n s
Irr= 1mA RL= 100 Ω
η *Tj = 2 5 ° CR
=50KΩ C L= 300 pF
L
80 %
F = 45Mhz Vi= 2V for BAR 43
* Detection effeciency
Fig. 1-1: Forward voltage drop versus forward
current (typical values, low level).
IFM(A)
2.00E-2
1.80E-2
1.60E-2
1.40E-2
1.20E-2
1.00E-2
8.00E-3
6.00E-3
4.00E-3
2.00E-3
0.00E+0
0.00 0.05 0.100.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50
Tj=100° C
Tj=25° C
Tj=50° C
VFM(V)
Fig. 1-2: Forward voltage drop versus forward
current (typical values, high level).
IFM(A)
5E-1
Tj=100° C
1E-1
Tj=50° C
1E-2
1E-3
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1
Tj=25° C
VFM(V)
2/4
Page 3
BAR42FILM BAR43/A/C/SFILM
Fig. 2: Reverse leakage current versus reverse
voltage applied (typical values).
IR(µ A)
1E+2
Tj=100° C
1E+1
1E+0
1E-1
Tj=50° C
Tj=25° C
VR(V)
1E-2
0 5 10 15 20 25 30
Fig. 4: Junction c apac i t ance versus reverse
voltage applied (typical values).
C(pF)
10
5
F=1MHz
Tj=25° C
Fig. 3: Reverse leakage current versus junction
temperature.
IR(µ A)
1E+4
VR=30V
1E+3
1E+2
1E+1
1E+0
1E-1
Tj(° C)
1E-2
0 25 50 75 100 125 150
Fig. 5: Relative variation of thermal impedance
junction to ambient versus pulse duration (epoxy
FR4withrecommendedpadlayout, e(Cu)=35µ m).
Zth(j-a)/Rth(j-a)
1.00
δ = 0.5
δ = 0.2
2
VR(V)
1
12 51 02 0 3 0
Fig. 6: Thermal resistance junction to ambient
versus copper surface under each lead (Epoxy
printed circuit board F R 4, c opper thic k nes s :
35µ m).
Rth(j-a) (° C/W)
350
300
250
200
S(Cu) (mm )
150
0 5 10 15 20 25 30 35 40 45 50
P=0.25W
0.10
δ = 0.1
T
Single pulse
tp(s)
δ
=tp/T
0.01
1E-3 1E-2 1E-1 1E+0 1E+1 1E+2
tp
3/4
Page 4
BAR42FILM BAR43/A/C/SFILM
PACKAGEMECHANICAL DATA
SOT-23(Plastic)
E
e
B
S
FOOT PRINT DIMENSIONS
0.9
0.035
1.9
2.35
0.92
1.45
0.037
0.075
A
REF.
Millimeters Inches
DIMENSIONS
Min. Max. Min. Max.
e1
D
A 0.89 1.4 0.035 0.055
A1 0 0.1 0 0.004
B 0.3 0.51 0.012 0.02
A1
L
c 0.085 0.18 0.003 0.007
D 2.75 3.04 0.108 0.12
e 0.85 1.05 0.033 0.041
e1 1.7 2.1 0.067 0.083
H
E 1.2 1.6 0.047 0.063
H 2.1 2.75 0.083 0.108
c
L 0.6typ. 0.024 typ.
S 0.35 0.65 0.014 0.026
0.9
0.035
1.1
0.043
mm
inch
1.1
0.043
0.9
0.035
Ordering type Marking Package Weight Base qty Delivery mode
BAR42FILM D94 SOT-23 0.01g 3000 Tape & reel
BAR43FILM D95 SOT-23 0.01g 3000 Tape & reel
BAR43AFILM DB1 SOT-23 0.01g 3000 Tape & reel
BAR43CFILM DB2 SOT-23 0.01g 3000 Tape & reel
BAR43SFILM DA5 SOT-23 0.01g 3000 Tape & reel
Epoxy meets UL94,V0
Information furnishedisbelieved tobe accurateand reliable.However, STMicroelectronicsassumes no responsibilityfor the consequencesof
use of suchinformation norforany infringement of patentsor otherrightsofthird parties whichmay result from itsuse. No licenseis granted by
implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to
change without notice. This publication supersedesand replaces all information previously supplied.
STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written
approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics
2001 STMicroelectronics - Printed in Italy - All rights reserved.
STMicroelectronics GROUP OF COMPANIES
Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia
Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A.
http://www.st.com
4/4