1N5221UR-1 thru 1N5281BUR-1,e3
(or MLL5221-1 thru MLL5281B-1,e3)
METALLURGICALLY BONDED GLASS
SURFACE MOUNT 500 mW ZENERS
S C O T T S D A L E D I V I S I O N
NOTE 1: Table as shown lists type numbers, which indicate a tolerance of +/-20% with guaranteed limits on only VZ, IR, and VF. Devices with
guaranteed limits on all six parameters are indicated by suffix “A” for +/-10%, “B” for +/-5%, “C” for +/-2%, and “D” for +/-1% tolerance.
NOTE 2: The electrical characteristics are measured after allowing the device to stabilize for 20 seconds.
NOTE 3: Temperature coefficient (αvz). Test conditions for temperature coefficient are as follows:
a.
I
ZT = 7.5 mA, T1 = 25oC,
T2 = 125oC (1N5221AUR-1 & BUR-1 thru 1N5242AUR-1 & BUR-1)
b. IZT = Rated IZT, T1 = 25oC,
T2 = 125oC (1N5243AUR-1 & BUR-1 thru 1N5281AUR-1 & BUR-1)
Device to be temperature stabilized with current applied prior to reading breakdown voltage at the specified ambient temperature.
NOTE 4: These devices may be ordered as either 1N5221UR-1 thru 1N5281BUR-1 or as MLL5221-1 thru MLL5281B-1 part numbers.
GRAPHS
Voltage Temperature
TEC
Coefficient %/oC
TA
mV Change /ºC
TEC End Cap Temperature (ºC), or
NOMINAL ZENER VOLTAGE (VOLTS)
FIGURE 2
TA Ambient Temperature on FR4 PC BOARD
FIGURE 1
POWER DERATING CURVE
ZENER VOLTAGE TEMPERATURE
COEFFICIENT vs. ZENER VOLTAGE
PACKAGE DIMENSIONS
INCHES
MILLIMETERS
DIM
A
B
MIN
MAX
0.067
0.146
0.022
MIN
1.60
3.30
0.41
MAX
1.70
3.70
0.55
0.063
0.130
0.016
C
INCHES
mm
5.08
1.40
2.03
A
B
C
.200
.055
.080
PAD LAYOUT
FIGURE 3
CAPACITANCE vs. ZENER VOLTAGE
(TYPICAL)
Copyright © 2005
8-29-2005 REV A
Microsemi
Page 3
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