Zeners/Studs
322
w w w . l i t t e l f u s e . c o m
BZY91C
Voltage
N = Stud Cathode Normal
R = Stud Anode Reverse
STUD CATHODE NORMAL
STUD ANODE REVERSE
ORDERING INFORMATION
FEATURES
Voltage range 7.5 - 75 Volts
5000 Watt peak pulse power
100 Watt steady state @ 25C
75 Watt steady state @ 65C
Glass passivated junction
5000 Watt surge capability at 1 ms
Typically IR less than1 A above 10V
Excellent clamping capability
Stud cathode & stud anode
Operating temperature -55C to +175C
100% tested
MECHANICAL CHARACTERISTICS
Case: Hermetically sealed DO5 outline
Finish: All external surfaces are corrosion resistant and
terminal solderable
Polarity: Indicated by direction of zener symbol
Weight: 14 grammes excluding mounting kit (approx)
Torque Setting 30inch/lb
ELECTRICAL DATA
Forward voltage Vf 1.5V max @ If
10A 300S square
wave pulse
Vz measured with pulse
100S and duty cycle 0.001
Rz determined with DC plus 10% superimposed AC @ 1KHz
BZY91 Series
AVAILABLE IN THE
FOLLOWING CONFIGURATIONS
All dimensions in mm
Zeners/Studs
323
w w w . l i t t e l f u s e . c o m
7
ZENERS/STUDS
Ptot
max
(W)
Tmb (C)
100
50
0
-50
-100
0
25
50
75
150
100
200
100
10
1
0.1
1
s
10
s
100
1ms
10ms
Pulse Time (tp)
Peak Pulse Power - Pp (kW
)
Exponential wave-form
Square wave-pulse
s
100ns
Figure 2. Maximum total dissapation plotted against mounting
base temp
Figure 1. Non-repetitive peak pulse power rating curve
BZY91 Series
Zener
Resistance
R
Z
(
) @ I
Z
Typ
I
Z
BZY91C7V5
BZY91C8V2
BZY91C9V1
BZY91C10*
BZY91C11
BZY91C12*
BZY91C13
BZY91C15*
BZY91C16
BZY91C18
BZY91C20*
BZY91C22
BZY91C24*
BZY91C27
BZY91C30*
BZY91C33*
BZY91C36
BZY91C39*
BZY91C43*
BZY91C47
BZY91C51
BZY91C56*
BZY91C62
BZY91C68
BZY91C75*
BZY91C7V5R
BZY91C8V2R
BZY91C9V1R
BZY91C10R
BZY91C11R
BZY91C12R
BZY91C13R
BZY91C15R*
BZY91C16R
BZY91C18R
BZY91C20R
BZY91C22R*
BZY91C24R
BZY91C27R*
BZY91C30R
BZY91C33R
BZY91C36R
BZY91C39R
BZY91C43R
BZY91C47R
BZY91C51R
BZY91C56R
BZY91C62R*
BZY91C68R
BZY91C75R
Stud
Cathode
Part Number
Zener Voltage
V
Z
(Volts) @ I
Z
7.0
7.7
8.5
9.4
10.4
11.4
12.4
13.8
15.3
16.8
18.8
20.8
22.7
25.1
28.0
31.0
34.0
37.0
40.0
44.0
48.0
52.0
58.0
64.0
70.0
7.9
8.7
9.6
10.6
11.6
12.7
14.1
15.6
17.1
19.1
21.2
23.3
25.9
28.9
32.0
35.0
38.0
41.0
46.0
50.0
54.0
60.0
66.0
72.0
79.0
5.0
5.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.04
0.06
0.08
0.08
0.08
0.10
0.10
0.12
0.12
0.14
0.16
0.16
0.18
0.20
0.22
0.24
0.26
0.28
0.30
0.34
0.36
0.4
0.44
0.48
0.51
MIN
MAX
(Volts)
(A)
Stud
Anode
Part Number
Maximum Reverse
Leakage IR @ VR
0.2
0.3
0.4
0.4
0.4
0.5
0.5
0.6
0.6
0.7
0.8
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.7
1.8
2.0
2.2
2.4
2.6
5.0
5.0
5.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
5.1
5.6
6.2
6.8
7.5
8.2
9.1
10.0
11.0
12.0
13.0
15.0
16.0
18.0
20.0
22.0
24.0
27.0
30.0
33.0
36.0
39.0
43.0
47.0
51.0
Max
(mA)
* Preferred voltages.
ELECTRICAL SPECIFICATION @ Tamb 25C
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