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RECTRON
SEMICONDUCTOR
TECHNICAL SPECIFICATION
500mW 5% mini-M.E.L.F ZENER DIODE
ZMM5221B
THRU
ZMM5257B
Absolute Maximun Ratings (Ta=25oC)
Items
Symbol Ratings
Power Dissipation
Thermal Resis.
PTOT
R0JA
500
0.3
Forward Voltage
@If = 10 mA
Vf
1.1
Vz Tolerence
5
Junction Temp.
Storage Temp.
T -65 to 200
J
TSTG -65 to 200
Unit
mW
K/mW
V
%
oC
oC
Mechanical Data
Items
Materials
Package
mini-MELF
Case
Hermeticall sealed glass
Lead Finish
Solder Plating
Dimensions
0.4
0.2
2 Places
mini-MELF
1.40
1.30
3.40
3.20
Dimensions in millimeters
Electrical Characteristics (Ta=25oC)
ZENER
VOLTAGE
MAX ZENER
IMPEDANCE
TYPE
ZMM5221B
ZMM5222B
ZMM5223B
ZMM5224B
ZMM5225B
ZMM5226B
ZMM5227B
ZMM5228B
ZMM5229B
ZMM5230B
ZMM5231B
ZMM5232B
ZMM5233B
ZMM5234B
Vz(V)
2.4
2.5
2.7
2.8
3.0
3.3
3.6
3.9
4.3
4.7
5.1
5.6
6.0
6.2
Izt(mA)
20
20
20
20
20
20
20
20
20
20
20
20
20
20
Rz (ohms) Izt(mA0
30 20
30 20
30 20
30 20
29 20
28 20
24 20
23 20
22 20
19 20
17 20
11 20
7 20
7 20
MAX ZENER
IMPEDANCE
Izt = 1.0mA
Rz (ohms)
1200
1250
1300
1400
1600
1600
1700
1900
2000
1900
1600
1600
1600
1000
MAXIMUM
REVERSE
CURRENT
VR (V)
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
2.0
2.0
3.0
3.5
4.0
IR (uA)
100
100
75
75
50
25
15
10
5
5
5
5
5
5
TEMP.
COEFF.
dvz
(%/ oC)
-0.085
-0.085
-0.080
-0.080
-0.075
-0.070
-0.065
-0.060
+/-0.055
+/-0.030
+/-0.030
+0.038
+0.038
+0.045

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TYPE
ZMM5235B
ZMM5236B
ZMM5237B
ZMM5238B
ZMM5239B
ZMM5240B
ZMM5241B
ZMM5242B
ZMM5243B
ZMM5244B
ZMM5245B
ZMM5246B
ZMM5247B
ZMM5248B
ZMM5249B
ZMM5250B
ZMM5251B
ZMM5252B
ZMM5253B
ZMM5254B
ZMM5255B
ZMM5256B
ZMM5257B
ZENER
VOLTAGE
MAX ZENER
IMPEDANCE
MAX ZENER
IMPEDANCE
Izt = 1.0mA
Vz(V)
6.8
7.5
8.2
8.7
9.1
10
11
12
13
14
15
16
17
18
19
20
22
24
25
27
28
30
33
Izt(mA)
20
20
20
20
20
20
20
20
9.5
9.0
8.5
7.8
7.4
7.0
6.6
6.2
5.6
5.2
5.0
4.6
4.5
4.2
3.8
Rz (ohms) Izt(mA0
5 20
6 20
8 20
8 20
10 20
17 20
22 20
30 20
13 9.5
15 9.0
16 8.5
17 7.8
19 7.4
21 7.0
23 6.6
25 6.2
29 5.6
33 5.2
35 5.0
41 4.6
44 4.5
49 4.2
58 3.8
Rz (ohms)
750
500
500
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
700
MAXIMUM
REVERSE
CURRENT
VR (V)
5.6
6.0
6.5
6.5
7.0
8.0
8.4
9.1
9.9
10
11
12
13
14
14
15
17
18
19
21
21
23
25
IR (uA)
3
3.0
3.0
3.0
3.0
3.0
2.0
1.0
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
TEMP.
COEFF.
dvz
(%/ oC)
+0.050
+0.058
+0.062
+0.065
+0.068
+0.075
+0.076
+0.077
+0.079
+0.082
+0.082
+0.083
+0.084
+0.085
+0.086
+0.086
+0.087
+0.088
+0.089
+0.090
+0.091
+0.091
+0.092