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U17 Datasheet

Controlled Avalanche Diode

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U17
FEATURES
Transient surge voltage protection.
Diffused-junction. Glass passivated and
encapsulated.
OUTLINE DRAWING
Direction of polarity
Unit in mm(inch)
φ 1.2
(0.05)
Type
U17B(100V)
U17C(200V)
U17D(300V)
U17E(400V)
Color of
cathode band
Yellow
Black
Purple
Blue
Weight: 1.0 (g)
ABSOLUTE MAXIMUM RATINGS
Items
Type
U17B
U17C
U17D
U17E
Repetitive Peak Reverse Voltage
Peak Reverse Power
VRRM
PRM
V
kW
100 200 300 400
3( Tj = 25°C,Impulse duration 10µs Non-repetitive )
Average Forward Current
IF(AV)
A
( )Single-phase half sine wave 180° conduction
2.5 TL=90°C, Lead length = 10mm
Surge(Non-Repetitive) Forward Current
I2t Limit Value
IFSM
I2t
A
A2s
100( Without PIV, 10ms conduction, Tj = 175°C start )
40( Time = 2 ~ 10ms, I = RMS value )
Operating Junction Temperature
Storage Temperature
Tj °C
Tstg °C
-40 ~ +175
-40 ~ +175
Notes (1) Lead mounting : Lead temperature 300°C max. to 3.2mm from body for 5sec. max..
(2) Mechanical strength : Bending 90°×2 cycles or 180°×1 cycle, Tensile 3kg, Twist 90°×1 cycle.
CHARACTERISTICS(TL=25°C)
Items
Symbols Units
Peak Reverse Current
IRRM
µA
Peak Forward Voltage
Reverse Recovery Time
Avalanche Voltage
Avalanche Voltage Temperature
Coefficient
Steady State Thermal Impedance
VFM
trr
VAVL
α
Rth(j-a)
Rth(j-l)
V
µs
V
%/°C
°C/W
Min.
-
Typ.
4
1.5
0.6
Max.
50
20
10
Test Conditions
B class
C,D class
E class
Rated VRRM
-
-
1.1
IFM=2.5Ap, Single-phase half sine
wave 1 cycle
- 3.0 -
Table.1
IF=2mA, VR=-15V
IRM=1.0mA, Single-phase half sine
wave 1 pps, Time 5s
-
0.080
-
VAVL
VAVL
×
1
175-25
×100
60
--
Lead length = 10 mm
30
PDE-U17-0
Hitachi
Hitachi



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