1/5
®
BAT47
BAT48
SMALL SIGNAL SCHOTTKY DIODE
October 2001 - Ed: 1B
DO-35
Symbol Parameter BAT47 BAT48 Unit
VRRM Repetitive Peak Reverse Voltage 20 40 V
IFForward Continuous Current* Ta= 25°C 350 mA
IFRM Repetitive Peak Fordward Current* tp≤1s
δ ≤ 0.5 1A
I
FSM Surge non Repetitive Forward Current* tp= 10ms 7.5 A
tp= 1s 1.5
Ptot Power Dissipation* Ta= 25°C 330 mW
Tstg
TjStorage and Junction Temperature Range - 65 to + 150
- 65 to + 125 °C
°C
TLMaximum Temperature for Soldering during 10s at 4mm from
Case 230 °C
ABSOLUTE RATINGS (limiting values)
Symbol Test Conditions Value Unit
Rth(j-l) Junction-ambient* 300 °C/W
THERMAL RESISTANCE
* On infinite heatsink with 4mm lead length
General purpose, metal to silicon diodes featuring
very low turn-on voltage and fast switching.These
devices have integrated protection against exces-
sive voltage such as electrostatic discharges.
DESCRIPTION
BAT47 / BAT48
* Pulse test: tp≤300µsδ<2%.
Symbol Test Conditions Min. Typ. Max. Unit
V(BR) IR= 10µABAT47 20 V
IR= 25µABAT48 40
VF*T
j
= 25°C IF= 0.1mA All Types 0.25 V
Tj= 25°CI
F
= 1mA 0.3
Tj= 25°CI
F
= 10mA 0.4
Tj= 25°CI
F
= 30mA BAT47 0.5
Tj= 25°CI
F
= 150mA 0.8
Tj= 25°CI
F
= 300mA 1
Tj= 25°CI
F
= 50mA BAT48 0.5
Tj= 25°CI
F
= 200mA 0.75
Tj= 25°CI
F
= 500mA 0.9
IR*T
j
= 25°C VR= 1.5V All Types 1 µA
Tj= 60°C10
Tj= 25°CVR= 10V BAT47 4
Tj= 60°C20
Tj= 25°CVR= 20V 10
Tj= 60°C30
Tj= 25°CVR= 10V BAT48 2
Tj= 60°C15
Tj= 25°CVR= 20V 5
Tj= 60°C25
Tj= 25°CVR= 40V 25
Tj= 60°C50
STATIC CHARACTERISTICS
ELECTRICAL CHARACTERISTICS
Symbol Test Conditions Min. Typ. Max. Unit
CT
j
= 25°C VR= 0V f = 1MHz 20 pF
Tj= 25°CV
R
= 1V 12
DYNAMIC CHARACTERISTICS
2/5
3/5
BAT47 / BAT48
Fig. 1: Forward currentversusforwardvoltageat
different temperatures (typical values). Fig. 2: Forward current versus forward voltage
(typical values).
Fig. 3: Reverse current versus junction tempera-
ture. Fig. 4: Reverse current versus continuous reverse
voltage (typical values).
BAT47 / BAT48
Fig. 5: Capacitance C versus reverse applied
voltage VR(typical values).
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BAT47 / BAT48
PACKAGE MECHANICAL DATA
DO-35
CA BO
/
O
/
D
O
/
D
C
REF. DIMENSIONS
Millimeters Inches
Min. Max. Min. Max.
A 3.05 4.50 0.120 0.177
B 1.53 2.00 0.060 0.079
C 28.00 1.102
D 0.458 0.558 0.018 0.022
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of
use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is 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 supersedes and 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.
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Cooling method: by convection and conduction.
Marking: clear, ring at cathode end.
Weight: 0.015g
