1N4448
SILICON PLANAR ZENER DIODE
FEATURES
* Fast Switching Device(T
RR
<4.0nS)
* DO-35 Package (JEDEC)
* Through-Hole Device Type Mounting
* Hermetically Sealed Glass
* Compression Bonded Construction
* All external surfaces are corrosion resistant and leads
are readily solderable
.022 (0.56)
DIA.
.018 (0.46)
1.02 (26.0)
MIN.
DO-35
.165 (4.2)
MAX.
.079 (2.0)
MAX.
1.02 (26.0)
MIN.
DIA.
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25 C ambient temperature unless otherwise specified.
o
Dimensions in inches and (millimeters)
MAXIMUM RATINGES
( @ T
A
= 25
o
C unless otherwise noted )
RATINGS
Peak Reverse Voltage
Maximum DC Blocking Voltage
Maximum Forward Continuous Current
Maximum Average Forward Rectified Current
Non-Repetitive Peak Forward Surge Current
SYMBOL
Vrm
VDc
1N4448
100
70
100
150
1
UNITS
Volts
Volts
I
FM
I
O
I
FSM
IT
T rr
C
T
P
D
T
J
,T
STG
O
mAmps
mAmps
Amps
2
AS
Typical Current Squared Time
Typical Reverse Recovery Time(I
F
=I
R
=30mA,I rr =0.1X
IR
,R
L
=100 )
Typical Junction Capacitance(V
R
=0V,f=1MHz)
Maximum Power Dissipation
Operating and Storage Temperature Range
ELECTRICAL CHARACTERISTICS
(@T
A
=25 C unless otherwise noted)
CHARACTERISTICS
Maximum Instantaneous Forward Voltage
@I F =5mA
@I F =100mA
@V
R
=20V
@V
R
=75V
2
0.004
4
4
500
-65 to + 200
nS
pF
mW
O
C
SYMBOL
V
F
I
R
1N4448
0.72
1.0
25
5
UNITS
Volts
nAmps
uAmps
Maximum Instantaneous Reverse Current
2012-9
REV:B
RATING AND CHARACTERISTICS CURVES ( 1N4448 )
IF, INSTANTANEOUS FORWARD CURRENT (mA)
1000
IR, LEAKAGE CURRENT (nA)
10,000
100
10
1.0
1000
100
0.1
10
V
R
=20V
0.01
0
1
VF, INSTANTANEOUS FORWARD VOLTAGE(V)
1
2
0
100
TJ, JUNCTION TEMPERATURE ( C)
O
200
Figure1 Forward Characteristics
Figure2 Leakage Current vs Junction Temperature
RECTRON
RECTRON
Attachment information about 1N4448
1. Internal Circuit
Anode
Cathode
2. Marking on the body
Cathode Band
1N
48
44
Part No
PACKAGING OF DIODE
BULK PACK
PACKAGE
DO-35
PACKING
CODE
-B
EA PER BOX
10,000
INNER BOX SIZE
(mm)
240*100*100
CARTON SIZE
(mm)
410*350*275
EA PER CARTON
120,000
GROSS
WEIGHT(Kg)
21.5
REEL PACK
PACKAGE
DO-35
PACKING
CODE
-T
REEL
( EA )
10,000
COMPONENT TAPE SPACE
SPACE(mm)
(mm)
5.0
52
REEL DIA
(mm)
356
CARTON SIZE
(mm)
380*380*420
EA PER
CARTON
50,000
GROSS
WEIGHT(Kg)
11.00
AMMO PACK
PACKAGE PACKING
CODE
DO-35
-F
REEL
( EA )
5,000
COMPONENT TAPE SPACE
SPACE(mm)
5.0
(mm)
52
BOX SIZE
(mm)
250*80*80
CARTON
SIZE(mm)
410*260*340
CARTON
( EA )
100,000
GROSS
WEIGHT (Kg)
20.00
Visit http:// www.rectron.com for complete datasheets
D36
DISCLAIMER NOTICE
Rectron Inc reserves the right to make changes without notice to any product
specification herein, to make corrections, modifications, enhancements or other
changes. Rectron Inc or anyone on its behalf assumes no responsibility or liabi-
lity for any errors or inaccuracies. Data sheet specifications and its information
contained are intended to provide a product description only. "Typical" paramet-
ers which may be included on RECTRON data sheets and/ or specifications ca-
n and do vary in different applications and actual performance may vary over ti-
me. Rectron Inc does not assume any liability arising out of the application or
use of any product or circuit.
Rectron products are not designed, intended or authorized for use in medical,
life-saving implant or other applications intended for life-sustaining or other rela-
ted applications where a failure or malfunction of component or circuitry may di-
rectly or indirectly cause injury or threaten a life without expressed written appr-
oval of Rectron Inc. Customers using or selling Rectron components for use in
such applications do so at their own risk and shall agree to fully indemnify Rect-
ron Inc and its subsidiaries harmless against all claims, damages and expendit-
ures.
RECTRON
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