Silicon Zener Diode Series
1N957BUR-1 thru 1N986BUR-1
Features
•
•
•
•
•
Available in JAN, JANTX and JANTXV per MIL-PRF-19500/117
Standard voltage tolerences are plus/minus 5%
with B suffix, 10% with A suffix identification.
Tight tolerences available in plus or minus 2% or
1% with C or D suffix respectively.
500 mW power handling
Hermetically sealed axial-leaded glass DO-213AA package.
Maximum Ratings
Operating & Storage Temperature: -65°C to +175°C
Thermal Resistance:
Steady-State Power:
250°C/W
0.5 watts
Foward Voltage @200 MA: 1.1 V for 1N957BUR-1 – 1N986BUR-1
Electrical Specifications @ +25 ºC (Unless Otherwise Specified)
JEDEC
TYPE
Number
(Note1)
1N957BUR-1
1N958BUR-1
1N959BUR-1
1N960BUR-1
1N961BUR-1
1N962BUR-1
1N963BUR-1
1N964BUR-1
1N965BUR-1
1N966BUR-1
1N967BUR-1
1N968BUR-1
1N969BUR-1
1N970BUR-1
1N971BUR-1
1N972BUR-1
1N973BUR-1
1N974BUR-1
1N975BUR-1
1N976BUR-1
1N977BUR-1
1N978BUR-1
1N979BUR-1
1N980BUR-1
1N981BUR-1
1N982BUR-1
1N983BUR-1
1N984BUR-1
1N985BUR-1
1N986BUR-1
Normal
Zener
Voltage
Vz
Volts
6.8
7.5
8.2
9.1
10
11
12
13
15
16
18
20
22
24
27
30
33
36
39
43
47
51
56
62
68
75
82
91
100
110
Zener
Test
Current
IZT
mA
18.5
16.5
15.0
14.0
12.5
11.5
10.5
9.5
8.5
7.8
7.0
6.2
5.6
5.2
4.6
4.2
3.8
3.4
3.2
3.0
2.7
2.5
2.2
2.0
1.8
1.7
1.5
1.4
1.3
1.1
Maximum Zener
Impedance
ZZT @ IZT
Ohms
4.5
5.5
6.5
7.5
8.5
9.5
11.5
13
16
17
21
25
29
33
41
49
58
70
80
93
105
125
150
185
230
270
330
400
500
750
ZZK @
Ohms
700
700
700
700
700
700
700
700
700
700
750
750
750
750
750
1000
1000
1000
1000
1000
1500
1500
2000
2000
2000
2000
3000
3000
3000
4000
IZK
mA
1.0
.5
.5
.5
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
Maximum DC
Zener
Current
IZM
mA
55
50
45
41
38
32
31
28
25
24
20
18
16
15
13
12
11
10
9.5
8.8
7.9
7.4
6.8
6.0
5.5
5.0
4.6
4.1
3.7
3.3
Maxmum Surge
Current
IZSM
mA
300
275
250
225
200
175
160
150
130
120
110
100
90
80
70
65
60
55
46
44
40
37
35
30
28
26
23
21
18
16
Maximum Reverse
Leakage
IR @ VR
μA
Volts
150
75
50
25
10
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5.2
5.7
6.2
6.9
7.6
8.4
9.1
9.9
11.4
12.2
13.7
15.2
16.7
18.2
20.6
22.8
25.1
27.4
29.7
32.7
35.8
38.8
42.6
47.1
51.7
56.0
62.2
69.2
76.0
83.6
Maximum
Temperature
Coefficient
α
VZ
%/°C
+0.05
+0.058
+0.065
+0.068
+0.075
+0.076
+0.077
+0.079
+0.082
+0.083
+0.085
+0.086
+0.087
+0.088
+0.090
+0.091
+0.092
+0.093
+0.094
+0.095
+0.095
+0.096
+0.096
+0.097
+0.097
+0.098
+0.098
+0.099
+0.11
+0.11
NOTE 1:
The JEDEC type numbers shown (B Suffix) have a +5% tolerence on nominal Zener Votlage. The suffix A is used to identify +10%
tolerance; suffix C is used to identify +2%: and suffix D is used identify +1%; no suffix indicates +20%.
Revision Date: 4/18/2012
1
1N957BUR-1 thru 1N986BUR-1
Outline Drawing
LEADED DESIGN DATA
D
CASE: DO-213AA, Hermetically sealed glass case. (MELF, SOD-80, LL34)
LEAD FINISH: Tin / Lead
G
F
G1
THERMAL RESISTANCE: (R
ӨJEC
): 100 ˚C/W maximum at L = 0 inch
THERMAL IMPEDANCE: (Z
ӨJX
): 25 ˚C/W maximum
S
POLARITY: Diode to be operated with the banded (cathode) end positive.
MOUNTING POSITION: Any.
MOUNTING SURFACE SELECTION: The Axial Coefficient of Expansion (COE) Of
this Device is Approximately +6 PPM/°C. The COE of the Mounting Surface
System Should Be Selected To Provide A Suitable Match With This Device.
Graphs
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Revision Date: 4/18/2012
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