MICROSEMI MLL4372A

8700 E. Thomas Road
Scottsdale, AZ 85252
Phone: (480) 941-6300
Fax: (480) 947-1503
MLL746A,-1 thru MLL759A,-1
and
MLL4370A,-1 thru MLL4372A,-1
±1% and ±2% Versions
“C” and “D” Available
Features
•
•
•
•
•
•
Leadless Package For Surface Mount Technology
Ideal For High Density Mounting
Voltage Range 2.4 To 12 Volts
Hermetically Sealed, Double Slug Glass Construction
Metallurgically Bonded Construction Available as Dash One.
Available in JAN, JTX, JTXV-1 To Mil-PRF-19500/127 (UR-1 Suffix)
LEADLESS GLASS
ZENER DIODE
SURFACE MOUNT
Maximum Ratings
500 mW DC Power Dissipation (See Power Derating Curve In Figure 1)
-55°C to +175°C Operating and Storage Junction Temperature
Package Dimensions In Inches
Application
This surface mountable zener diode series is similar to the 1N746 thru
1N759 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 @ 25°C
MICROSEMI
PART
NUMBER
MAXIMUM
ZENER
IMPEDANC
E
ZZT @ IZT
(NOTE 2)
TYPICAL
TEMP
COEFF. OF
ZENER
VOLTAGE
NOMINAL
ZENER
VOLTAGE
VZ @ IzT
(NOTE 1)
ZENER
TEST
CURRENT
IzT
VOLTS
mA
OHMS
µA
µA
mA
%/°°C
MLL4370A
MLL4371A
MLL4372A
2.4
2.7
3.0
20
20
20
30
30
29
100
75
50
200
150
100
150
135
120
- .085
- .080
- .075
MLL746A
MLL747A
MLL748A
MLL749A
MLL750A
MLL751A
MLL752A
MLL753A
MLL754A
MLL755A
MLL756A
MLL757A
MLL758A
MLL759A
3.3
3.6
3.9
4.3
4.7
5.1
5.6
6.2
6.8
7.5
8.2
9.1
10.0
12.0
20
20
20
20
20
20
20
20
20
20
20
20
20
20
28
24
23
22
19
17
11
7
5
6
8
10
17
30
10
10
10
2
2
1
1
.1
.1
.1
.1
.1
.1
.1
30
30
30
30
30
20
20
20
20
20
20
20
20
20
110
100
95
85
75
70
65
60
55
50
45
40
35
30
- .066
- .058
- .046
- .033
- .015
±.010
+.030
+.049
+.053
+.057
+.060
+.061
+.062
+.062
**
MAXIMUM
REVERSE CURRENT
@ VR = 1 VOLT
@25°°C
@ +150°°C
MAXIMUM
ZENER
CURRENT
IZM
(NOTE 4)
αVZ
Note 1 Voltage measurements to be performed 20 seconds after application of dc
test current.
Note 2 Zener impedance derived by superimposing on IZT at 60 Hz rms ac current
equal to 10% IZT (2 mA ac).
Note 3 Allowance has been made for the increase in VZ due to ZZ and for the
increase in junction temperature as the unit approaches thermal equilibrium at the
power dissipation at 500 mW.
** Ordering Information:
1) Commercial: MLL746A thru MLL759A or MLL746A-1 thru MLL759A-1
MLL4370A thru MLL4372A or MLL4370A-1 thru MLL4372A-1
2) Military: JAN, JANTX, or JANTXV 1Nxxxx UR-1
3) Tight tolerance "C" suffix = ±2%, "D" suffix = ±1%
MSC0291.PDF 04-20-00
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
DO-213AA
Mechanical
Characteristics
Case: Hermetically sealed glass with solder
contact tabs at each end.
Finish: All external surfaces are corrosion
resistant, readily solderable.
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
MLL746A,-1 thru MLL759A,-1
and
MLL4370A,-1 thru MLL4372A,-1
±1% and ±2% Versions
“C” and “D” Available
STEADY STATE POWER DERATING
ZENER IMPEDANCE (Ohms)
1.4
PD = Power Dissipation
1.2
1.0
0.8
Dash 1
Metalurgically Bonded
0.6
0.4
Non-Dash 1
0.2
0
0
20
40
60
80
100
120
140
160
180
200
T E C End Cap Case Temperature (ºC)
ZENER CURRENT (mA)
FIGURE 1
FIGURE 2
ZENER IMPEDANCE VS ZENER CURRENT
(TYPICAL)
CAPACITANCE vs VZ CURVE
TYPICAL CAPACITANCE IN PICOFARADS
300
200
100
90
80
70
60
50
40
30
20
At Zero Volts
10
9
8
7
6
5
4
3
At - 2 Volts (VR )
2
1
0
20
40
60
80 100 120 140 160 180 200 220
ZENER VOLTAGE VZ
FIGURE 3
CAPACITANCE VS ZENER VOLTAGE
(TYPICAL)
MSC0291.PDF 04-20-00