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Zeners/Studs
BZY91
Series
Quality, Affordable Voltage Regulation
Whether you need stable, steady state
voltage regulation for a new design, or in
support of an existing product, you can
rely on Crydom Zeners/Studs for high
quality and performance, short delivery
times, and competitive pricing.
MAXIMUM RATINGS
• Voltage range: 7.5-75 V
• 5000 watt peak pulse power
• 100 watt steady state @ 25°C
• 75 watt steady state @ 65°C
FEATURES
• Glass passivated junction
• 5000 watt surge capability at 1 ms
• Typically IR less than 1 µA above 10 V
• Excellent clamping capability
• Stud cathode and stud anode
• 100% tested
• Operating temperature: -55°C to +175°C
PART
NUMBER
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
ZENER VOLTAGE
VZ (V) @ IZ
TYP. MAX.
7.0 7.9
7.7 8.7
8.5 9.6
9.4 10.6
10.4 11.6
11.4 12.7
12.4 14.1
13.8 15.6
15.3 17.1
16.8 19.1
18.8 21.2
20.8 23.3
22.7 25.9
25.1 28.9
28.0 32.0
31.0 35.0
34.0 38.0
37.0 41.0
40.0 46.0
44.0 50.0
48.0 54.0
52.0 60.0
58.0 66.0
64.0 72.0
70.0 79.0
IZ
(A)
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
ZENER RESISTANCE
RZ () @ IZ
TYP. MAX.
0.04 0.2
0.06 0.3
0.08 0.4
0.08 0.4
0.08 0.4
0.10 0.5
0.10 0.5
0.12 0.6
0.12 0.6
0.14 0.7
0.16 0.8
0.16 0.8
0.18 0.9
0.20 1.0
0.22 1.1
0.24 1.2
0.26 1.3
0.28 1.4
0.30 1.5
0.34 1.7
0.36 1.8
0.4 2.0
0.44 2.2
0.48 2.4
0.51 2.6
Note: Suffix “R” denotes stud anode reverse. Electrical specifications @ 25°C.
To Order: 1-877-502-5500 Fax: 1-619-715-7280
MAXIMUM REVERSE
LEAKAGE IR @ VR
(mA) (V)
5.0 5.1
5.0 5.6
5.0 6.2
1.0 6.8
1.0 7.5
1.0 8.2
1.0 9.1
1.0 10.0
1.0 11.0
1.0 12.0
1.0 13.0
1.0 15.0
1.0 16.0
1.0 18.0
1.0 20.0
1.0 22.0
1.0 24.0
1.0 27.0
1.0 30.0
1.0 33.0
1.0 36.0
1.0 39.0
1.0 43.0
1.0 47.0
1.0 51.0

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Specify Crydom
…for these industry-leading
components and products:
• Solid State Relays
Printed Circuit Board Mount
Panel Mount
DIN Rail Mount
• Power Cubes
• I/O Modules
• Transient Voltage
Suppression Components
TVS Diodes
Thyristor Suppression
Devices
Gas Discharge Tubes (GDT)
Zeners/Studs
Hybrid Arrester Devices
Zeners/Studs
BZY91 Series
Maximum Total Dissipation Plotted Against
Mounting Base Temp
100
75
50
25
0
-10 -50
0
50 100 150 200
Tmb (°C)
MECHANICAL CHARACTERISTICS
• Case: Hermetically sealed D05 outline
• Finish: All external surfaces are corro-
sion resistant and terminal solderable
• Polarity: Indicated by direction of
zener symbol
• Weight: 14 grams excluding mounting
kit (approx.)
ELECTRICAL DATA
• Forward voltage VF 1.5 V max. @
IF 10 A 300 µs square wave pulse
• VZ measured with pulse 100 µs
and duty cycle 0.001
• Rz determined with DC plus 10%
superimposed AC @ 1kHz
Ordering Information
For recommended applications and more
information contact:
Sales: 1-877-502-5500
Technical support: 1-877-702-7700
Corporate Headquarters: 1-619-715-7200
Fax: 1-619-715-7280
E-mail: sales@crydom.com
Website: www.crydom.com
BZY91C
Voltage
N = Stud cathode normal
R = Stud anode reverse
Non-repetitive Peak Pulse Power
Rating Curve
100
Exponential wave form
10
Square wave pulse
1
0.1
1 µs 10 µs 100 ? 1? 10? 100?
Pulse Time, tP
(Note: Peak power defined as peak voltage times peak current.)
About Crydom
Over the years Crydom has become the
supplier of choice for advanced, high-quality
products like those featured here. It's the
result of our teams of design and production
engineers – material, production control,
and quality assurance experts, and more –
working seamlessly together to create,
produce, and deliver superior components
and products that satisfy the most demand-
ing environmental and performance require-
ments. We focus on timely delivery and
competitive pricing aimed at meeting your
needs and helping you succeed in today's
fast-paced, fast-changing global markets.
Crydom
9525 Chesapeake Drive
San Diego, CA 92123 USA
©1998 Crydom
Specifications subject to change without notice.
FASTFAX Product Info: 1-888-267-9191
CRYDOM BZY91 998-5000 Ver A