GENERAL DATA — 500 mW DO-35 GLASS
ELECTRICAL CHARACTERISTICS — continued (T = 25°C unless otherwise noted. Based on dc measurements at thermal equi-
A
librium; lead length = 3/8″; thermal resistance of heat sink = 30°C/W) V = 1.1 Max @ I = 200 mA for all types.
F
F
Nominal
Zener Voltage
Max Zener Impedance
(Note 4)
Max Reverse
Leakage Current
Test
Max Zener Voltage
Temperature Coeff.
JEDEC
Type No.
(Note 1)
Current
V
@ I
Volts
Z
ZT
Z
@ I
Ohms
Z
ZK
@ I
= 0.25 mA
I
V
R
Volts
I
θ
(%/°C)
ZT
ZT
ZK
R
ZT
VZ
Ohms
µA
mA
(Note 2)
(Note 3)
1N5266B
1N5267B
1N5268B
1N5270B
68
75
82
91
1.8
1.7
1.5
1.4
230
270
330
400
1600
1700
2000
2300
0.1
0.1
0.1
0.1
52
56
62
69
+0.097
+0.098
+0.098
+0.099
1N5271B
1N5272B
1N5273B
1N5274B
1N5275B
100
110
120
130
140
1.3
1.1
1
0.95
0.9
500
750
900
1100
1300
2600
3000
4000
4500
4500
0.1
0.1
0.1
0.1
0.1
76
84
91
99
106
+0.11
+0.11
+0.11
+0.11
+0.11
1N5276B
1N5278B
1N5279B
1N5280B
1N5281B
150
170
180
190
200
0.85
0.74
0.68
0.66
0.65
1500
1900
2200
2400
2500
5000
5500
6000
6500
7000
0.1
0.1
0.1
0.1
0.1
114
129
137
144
152
+0.11
+0.11
+0.11
+0.11
+0.11
NOTE 1. TOLERANCE
NOTE 3. ZENER VOLTAGE (V ) MEASUREMENT
Z
Nominal zener voltage is measured with the device junction in thermal equilibrium at the lead
temperature of 30°C ±1°C and 3/8″ lead length.
The JEDEC type numbers shown indicate a tolerance of ±5%. For tighter tolerance devices
use suffixes “C” for ±2% and “D” for ±1%.
NOTE 4. ZENER IMPEDANCE (Z ) DERIVATION
Z
NOTE 2. TEMPERATURE COEFFICIENT (θ
)
VZ
Test conditions for temperature coefficient are as follows:
a. I = 7.5 mA, T = 25°C,
Z
andZ aremeasuredbydividingtheacvoltagedropacrossthedevicebytheaccurrent
ZT
applied. The specified limits are for I (ac) = 0.1 I (dc) with the ac frequency = 60 Hz.
ZK
Z
Z
ZT
1
a. T = 125°C (1N5221B through 1N5242B).
2
ZT
b. I
= Rated I , T = 25°C,
ZT 1
For more information on special selections contact your nearest Motorola representa-
tive.
a. T = 125°C (1N5243B through 1N5281B).
2
Device to be temperature stabilized with current applied prior to reading breakdown voltage
at the specified ambient temperature.
Motorola TVS/Zener Device Data
500 mW DO-35 Glass Data Sheet
6-3