©2004 Fairchild Semiconductor Corporation 1www.fairchildsemi.com
FDLL4151 Rev. B
FDLL4151 Small Signal Diode
FDLL4151
Small Signal Diode
General Desc ription
A general purpose diode that couples high forward conductance fast swiching s peed and high blocking voltages in a glass leadless
LL-34 surface mount package. Placement of the expansion gap has no relationship to the location of the cathode terminal which is
indicated by the firs t color band.
Absolute Maximum Ratings *
T
a
= 25°C unless otherwise noted
* These ratings are limiting values above which the serviceability of any semiconductor device may be impaired.
NOTES:
1. These ratings are based on a maximum juction temperature of 200 degrees C.
2. These are steady state limits. The factor y should be consulted on applications involving pulsed or low duty cycle operations.
Thermal Charac t eris tics
Electrical Characteristics
T
C
= 25°C unless otherwise noted
Symbol Parameter Value Units
V
RRM
Maximum Repetitive Reverse Voltage 75 V
I
F(AV)
Average Rectified Forward Current 200 mA
I
FSM
Non-repetitive Peak Forward Current
Pulse Width = 1.0 second
Pulse Width = 1.0microsecond 1.0
4.0 A
A
T
STG
Storage Temperature Range -65 to +200 °C
T
J
Operating Junction Temperature -65 to +200 °C
Symbol Parameter Value Units
P
D
Power Dissipation 500 mW
R
θJA
Thermal Resistance, Junction to A mbient 350 °C/W
Symbol Parameter Conditions Min. Max Units
V
R
Breakdown Voltage I
R
= 5µA75V
V
F
Forward Voltage I
F
= 50mA 1 V
I
R
Reverse Current V
R
= 50V
V
R
= 30V, T
A
= 150°C50
50 nA
µA
C
T
Total Capacit ance V
R
= 0, f = 1.0MHz 4 pF
t
rr1
Reverse Recover y Time I
F
= I
R
= 10mA, I
RR
= 1mA
R
L
= 100Ω4ns
t
rr2
Reverse Recover y Time V
R
= 6V, I
F
= 10mA, I
RR
= 1mA
R
L
= 100Ω2ns
BLACK
YELLOW
Expansion Gap
Cathode Band
TRADEMARKS
The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to
be an exhaustive list of all such trademarks.
2www.fairchildsemi.com
FDLL4151 Rev. B
FDLL4151 Small Signal Diode
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY
ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT
CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR
SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION.
As used herein:
1. Life support devices or systems are devices or systems which,
(a) are intended for surgical implant into the body, or (b) support
or sustain life, or (c) whose failure to perform when properly used
in accordance with instructions for use provided in the labeling,
can be reasonably expected to result in significant injury to the
user.
2. A critical component is any component of a life support device
or system whose failure to perform can be reasonably expected
to cause the failure of the life support device or system, or to
affect its safety or effectiveness.
PRODUCT STATUS DEFINITIONS
Definition of Terms
Datasheet Identification Product Status Definition
Advance Information Formative or In
Design This datasheet contains the design specifications for
product development. Specifications may change in
any manner without notice.
Preliminary First Production This datasheet contains preliminary data, and
supplementary data will be published at a later date.
Fairchild Semiconductor reserves the right to make
changes at any time without notice in or der to improve
design.
No Identificatio n Needed Full Production This datasheet contains final specifications. Fairchild
Semiconductor reserves the right to make changes at
any time without notice in order to improve design.
Obsolete Not In Production This datasheet contains specifications on a product
that has been discontinue d by Fairchild semiconductor.
The datasheet is pr inted for reference information only.
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