8700 E. Thomas Road
Scottsdale, AZ 85252
Phone: (480) 941-6300
Fax: (480) 947-1503
MLL957B,-1
thru
MLL992B,-1
±1% and ±2% Versions
“C” and “D” Available
Features
•
•
•
•
•
Leadless Package For Surface Mount Technology
Ideal For High Density Mounting
Voltage Range 6.8 To 200 Volts
Hermetically Sealed, Double Slug Glass Construction
Metallurgically Bonded Construction Available as Dash One.
Available in JAN, JTX, JTXV-1 to Mil-PRF-19500/117 (UR-1 Suffix)
•
Maximum Ratings
500 mW DC Power Dissipation (See Power Derating Curve In Figure 1)
-55°C to +175°C Operating and Storage Junction Temperature
LEADLESS GLASS
ZENER DIODE
SURFACE MOUNT
Package Dimensions In Inches
Application
This surface mountable zener diode series is similar to the 1N957B thru
1N992B in the DO-35 equivalent package except that it meets the new
JEDEC surface mount outline DO-213AA. It is an ideal selection for
applications of high density and low parasitic requirements. Due to its
glass hermetic qualities, it may also be considered for high reliability
applications.
Electrical Characteristics (see next page)
STEADY STATE POWER DERATING
1.4
1.2
DIM
A
B
U
MILLIMETERS
MIN
MAX
3.30
3.70
1.60
1.70
0.41
0.55
INCHES
MIN
.130
.063
.016
MAX
.146
.067
.022
P
D
= Power Dissipation
1.0
DO-213AA
Dash 1
Metallurgically Bonded
0.8
0.6
Mechanical
Characteristics
Case:
Hermetically sealed glass with solder
contact tabs at each end.
Finish:
All external surfaces are corrosion
resistant, readily solderable.
0.4
Non-Dash 1
0.2
0
0
20
40
60
80
100
120
140
160
180
200
T
EC
End Cap Case Temperature (ºC)
FIGURE 1
Polarity:
Banded end is cathode.
Thermal Resistance:
100°C/Watt Maximum
junction to end caps for "-1" construction and
150°C/W maximum junction to end caps for
commercial.
Mounting Position:
Any
Weight: 0.04 gm
MLL957B-92B.PDF 05-02-00
MLL957B,-1
thru
MLL992B,-1
±1% and ±2% Versions
“C” and “D” Available
Electrical Characteristics @ 25°C
MICROSEMI
PART
NUMBER
NOMINAL
ZENER
VOLTAGE
V
Z
@ I
zT
(NOTE 1)
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
120
130
150
160
180
200
ZENER
TEST
CURRENT
I
zT
MAX ZENER IMPEDANCE
(Note 3)
MAX. DC
ZENER
CURRENT
I
ZM
(NOTE 4)
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
3.1
2.7
2.4
2.2
2.0
1.8
MAX. SURGE
CURRENT
(RECURRENT)
(NOTE 4
I
Z
(SURGE)
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
15
13
12
11
10
9
MAX. REVERSE
LEAKAGE
CURRENT
I
R
µ
A
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
5
5
5
5
5
V
R
VOLTS
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
91.2
98.8
114.0
121.6
136.8
152.0
MAX.TEMP
COEFFICIENT
Z
ZT
@ I
ZT
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
1.0
0.95
0.85
0.80
0.68
0.65
OHMS
4.5
5.5
6.5
7.5
8.5
9.5
11.5
13.0
16
17
21
25
29
33
41
49
58
70
40
93
105
125
150
185
230
270
330
400
500
750
900
1100
1500
1700
2200
2500
OHMS
700
700
700
700
700
700
700
700
700
700
750
750
750
750
750
1000
1000
1000
1000
1500
1500
1500
2000
2000
2000
2000
3000
3000
3000
4000
4500
5000
6000
6500
7100
8000
Z
ZK
@ I
ZK
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
.25
.25
.25
.25
.25
.25
α
VZ
%/°C
°
+0.050
+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
+0.110
+0.110
+0.110
+0.110
+0.110
+0.110
+0.110
+0.110
**
MLL957B
MLL958B
MLL959B
MLL960B
MLL961B
MLL962B
MLL963B
MLL964B
MLL965B
MLL966B
MLL967B
MLL968B
MLL969B
MLL970B
MLL971B
MLL972B
MLL973B
MLL974B
MLL975B
MLL976B
MLL977B
MLL978B
MLL979B
MLL980B
MLL981B
MLL982B
MLL983B
MLL984B
MLL985B
MLL986B
MLL987B
MLL988B
MLL989B
MLL990B
MLL991B
MLL992B
Note 1 Voltage measurements to be performed 20 seconds after application of dc test current.
Note 2 Zener impedance derived by superimposing on I
ZT
at 60 Hz rms ac current
equal to 10% I
ZT.
Note 3 Allowance has been made for the increase in V
Z
due to Z
Z
and for the increase in junction temperature as the unit
approaches thermal equilibrium at the power dissipation at 500 mW.
** Ordering Information:
1) Commercial: MLL957B thu MLL992B orMLL957B-1 thru MLL992B-1
2) Military: JAN, JANTX, or JANTXV 1N962BUR-1 thru 1N992BUR-1
3) Tight tolerance "C" suffix = ±2%, "D" suffix = ±1%
4) Surge is square wave or equivalent
½
sine wave pulse of 1/120 second duration.
MLL957B-92B.PDF 05-02-00
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