©2007 Fairchild Semiconductor Corporation 1www.fairchildsemi.com
BZX85C3V3 - BZX85C56 Rev. F1
BZX85C3V3 - BZX85C56 Zener Diodes
June 2007
BZX85C3V3 - BZX85C56
Zener Diodes
Absolute Maximum Ratings * TA = 25°C unless otherwise noted
* These ratings are limiting values above which the serviceability of the diode may be impaired.
Electrical Characteristics * TA=25°C unless otherwise noted
Symbol Parameter Value Units
PDPower Dissipation @ TL ≤ 50°C, Lead Length = 3/8” 1.0 W
Derate above 50°C6.67 mW/°C
TJ, TSTG Operating and Storage Temperature Range -65 to +200 °C
Device Zener Voltage (Note 1) Zener Impedance Leakage Current
VZ (Volts) IZZZ @ IZZZK @ IZK IR @ VR
Min. Max. mA (Ω) (Ω)(mA) μA Max. Volts
BZX85C3V3
BZX85C3V6
BZX85C3V9
BZX85C4V3
BZX85C4V7
3.1
3.4
3.7
4.0
4.4
3.5
3.8
4.1
4.6
5
80
60
60
50
45
20
15
15
13
13
400
500
500
500
600
1
1
1
1
1
60
30
5
3
3
1
1
1
1
1.5
BZX85C5V1
BZX85C5V6
BZX85C6V2
BZX85C6V8
BZX85C7V5
4.8
5.2
5.8
6.4
7.0
5.4
6
6.6
7.2
7.9
45
45
35
35
35
10
7
4
3.5
3
500
400
300
300
200
1
1
1
1
0.5
1
1
1
1
1
2
2
3
4
4.5
BZX85C8V2
BZX85C9V1
BZX85C10
BZX85C11
BZX85C12
7.7
8.5
9.4
10.4
11.4
8.7
9.6
10.6
11.6
12.7
25
25
25
20
20
5
5
7
8
9
200
200
200
300
350
0.5
0.5
0.5
0.5
0.5
1
1
0.5
0.5
0.5
5
6.5
7
7.7
8.4
BZX85C13
BZX85C15
BZX85C16
BZX85C18
BZX85C20
12.4
13.8
15.3
16.8
18.8
14.1
15.6
17.1
19.1
21.2
20
15
15
15
10
10
15
15
20
24
400
500
500
500
600
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
9.1
10.5
11
12.5
14
DO-41 Glass case
COLOR BAND DENOTES CATHODE
To lerance = 5%
2www.fairchildsemi.com
BZX85C3V3 - BZX85C56 Rev. F1
BZX85C3V3 - BZX85C56 Zener Diodes
Notes:
1.Zener Voltage (VZ)
The zener voltage is measured with the device junction in the thermal equilibrium at the lead temperature (TL) at 30°C ± 1°C and 3/8” lead length.
Top Mark Information
Device Zener Voltage (Note 1) Zener Impedance Leakage Current
VZ (Volts) IZZZ @ IZZZK @ IZK IR @ VR
Min. Max. mA (Ω) (Ω)(mA) μA Max. Volts
BZX85C22
BZX85C24
BZX85C27
BZX85C30
BZX85C33
20.8
22.8
25.1
28
31
23.3
25.6
28.9
32
35
10
10
8
8
8
25
25
30
30
35
600
600
750
1000
1000
0.5
0.5
0.25
0.25
0.25
0.5
0.5
0.5
0.5
0.5
15.5
17
19
21
23
BZX85C36
BZX85C39
BZX85C43
BZX85C47
BZX85C51
34
37
40
44
48
38
41
46
50
54
8
6
6
4
4
40
45
50
90
115
1000
1000
1000
1500
1500
0.25
0.25
0.25
0.25
0.25
0.5
0.5
0.5
0.5
0.5
25
27
30
33
36
BZX85C56 52 60 4120 2000 0.25 0.5 39
VF Forward Voltage = 1.2V Max @ IF = 200mA
Device Line 1 Line 2 Line 3 Line 4 Line 5
BZX85C3V3
BZX85C3V6
BZX85C3V9
BZX85C4V3
BZX85C4V7
LOGO
LOGO
LOGO
LOGO
LOGO
85C
85C
85C
85C
85C
3V3
3V6
3V9
4V3
4V7
XY
XY
XY
XY
XY
BZX85C5V1
BZX85C5V6
BZX85C6V2
BZX85C6V8
BZX85C7V5
LOGO
LOGO
LOGO
LOGO
LOGO
85C
85C
85C
85C
85C
5V1
5V6
6V2
6V8
7V5
XY
XY
XY
XY
XY
BZX85C8V2
BZX85C9V1
BZX85C10
BZX85C11
BZX85C12
LOGO
LOGO
LOGO
LOGO
LOGO
85C
85C
85C
85C
85C
8V2
9V1
10
11
12
XY
XY
XY
XY
XY
BZX85C13
BZX85C15
BZX85C16
BZX85C18
BZX85C20
LOGO
LOGO
LOGO
LOGO
LOGO
85C
85C
85C
85C
85C
13
15
16
18
20
XY
XY
XY
XY
XY
BZX85C22
BZX85C24
BZX85C27
BZX85C30
BZX85C33
LOGO
LOGO
LOGO
LOGO
LOGO
85C
85C
85C
85C
85C
22
24
27
30
33
XY
XY
XY
XY
XY
BZX85C36
BZX85C39
BZX85C43
BZX85C47
BZX85C51
LOGO
LOGO
LOGO
LOGO
LOGO
85C
85C
85C
85C
85C
36
39
43
47
51
XY
XY
XY
XY
XY
BZX85C56 LOGO 85C 56 XY
3www.fairchildsemi.com
BZX85C3V3 - BZX85C56 Rev. F1
BZX85C3V3 - BZX85C56 Zener Diodes
Top Mark Information (Continued)
General Requirements:
1.0 Cathode Band
2.0 First Line: F - Fairchild Logo
3.0 Second Line: Device name - For 1Nxx series: 3rd to 4th characters of the device name.
For BZxx series: 4th to 6th characters of the device name.
4.0 Third Line: Device name - For 1Nxx series: 5th to 6th characters of the device name.
For BZXyy series: Voltage rating
5.0 Third Line: Device name - For 1Nxx series: 7th to 8th characters of the device name.
(the 8th character is the large die identification)
For BZXyy series: Large Die Identification character
6.0 Fourth Line: Date Code - Two Digit - Six Weeks Date Code
Where: X represents the last digit of the calendar year
Y represents the Six weeks numeric code
7.0 Devices shall be marked as required in the device specification (PID or FSC Test Spec).
8.0 Maximum no. of marking lines: 5
9.0 Maximum no. of digits per line: 3
10.0 FSC logo must be 20 % taller than the alphanumeric marking and should occupy the 2 characters of the specified line.
11.0 Marking Font: Arial (Except FSC Logo)
12.0 First character of each marking line must be aligned vertically
13.0 All device markings must be based on Fairchild device specification.
F
47
36
A
F
XY
1st line: F - Fairchild Logo
2nd line: Device Name - 3rd to 4th characters of device name for 1Nxx series
or 4th to 6th characters for BZXyy series
3rd line: Device Name - 5th to 6th characters of device name for 1Nx x series
or Voltage rating for BZ Xyy series
4th line: Device Name - 7th to 8th characters of device name fo r 1Nxx series
or Large Die i de nt i fi cation only for BZX yy series
5th line: Date Code - Two Digit - Six Weeks Date Code
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.
BZX85C3V3 - BZX85C56 Zener Diodes
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO
IMPROVE RELIABILITY, FUNCTION OR DESIGN. FA IRCH ILD 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. THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD’S WORLDWIDE TERMS AND CONDITIONS, SPE-
CIFICALLY THE WARRANTY THEREIN, WHICH COVERS THESE PRODUCTS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEV ICES OR SYSTEMS W ITHOUT
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 impla nt into the body, or (b) support or susta in 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 supp ort device or system
whose failure to perform can be reason ably expected to cause the failure
of the life support device o r system, or to affe ct its safet y or eff ectiveness.
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 develop-
ment. Specifications may change in any manner without notice.
Preliminary First Production This datasheet contains preliminary data, and supplementary data will
be published at a lat er date. Fairchil d Semiconducto r reserves th e right
to make changes at any time without notice in order to improve design.
No Identification 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 ha s been dis-
continued by Fairchild semiconductor.The datasheet is printed for ref-
erence information only.
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Across the board. Around the world.™
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Rev. I23
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BZX85C3V3 - BZX85C56 Rev. F1
BZX85C3V3 - BZX85C56 Zener Diodes
