SCOTTSDALE DIVISION
1N746UR-1 thru 1N759AUR-1 and
1N4370UR-1 thru 1N4372AUR-1
(or MLL746-1 thru MLL759A-1 and
MLL4370-1 thru MLL4372A-1)
Surface Mount 500 mW Zener Diodes
DESCRIPTION
The 1N746UR-1 thru 1N759AUR-1 and 1N4370UR-1 thru 1N4372AUR-1
series of 0.5 watt Zener Voltage Regulators provides a surface mount
equivalent to the popular JEDEC registered 1N746 to 1N759A and 1N4370
to 1N4372A for 2.4 to 12 volts in standard 5% or 10% tolerances as well as
tighter tolerances identified by different suffix letters on the part number.
These glass surface mount DO-213AA Zeners have internal-metallurgical-
bonding and are also available in JAN, JANTX, and JANTXV military
qualifications. Microsemi also offers numerous other Zener products to
meet higher and lower power applications.
IMPORTANT:
For the most current data, consult
MICROSEMI’s
website:
http://www.microsemi.com
APPEARANCE
WWW .
Microsemi
.C
OM
DO-213AA
FEATURES
•
•
•
Surface mount equivalents to the JEDEC registered
1N746 thru 1N759A and 1N4370 thru 1N4372A series
Internal metallurgical bonding
Also available in JAN, JANTX, and JANTXV
qualifications per MIL-PRF-19500/127 by adding the
JAN, JANTX, or JANTXV prefixes to part numbers for
desired level of screening; (e.g. JANTX1N751AUR-1,
JANTXV1N758CUR-1, etc.)
Axial-leaded equivalents also available in DO-35
including JAN, JANTX, and JANTXV military qualified
options to MIL-PRF-19500/127; e.g. JANTX1N753A-1
(see separate data sheet)
DO-7 glass body axial-leaded Zener equivalents are
also available
•
•
•
•
•
•
•
•
APPLICATIONS / BENEFITS
Regulates voltage over a broad operating
current and temperature range
Selection from 2.4 to 12 V
Hermetically sealed surface mount package
Standard voltage tolerances are plus/minus 5%
with A suffix identification and 10 % with no suffix
Tight tolerances available in plus or minus 2%
or 1% with C or D suffix respectively
Nonsensitive to ESD per MIL-STD-750 Method 1020
Minimal capacitance (see Figure 2)
Inherently radiation hard as described in Microsemi
MicroNote 050
•
•
MAXIMUM RATINGS
•
•
Operating and Storage temperature: -65
º
C to +175
º
C
Thermal Resistance: 100
º
C/W junction to end or
250
º
C/W junction to ambient when mounted on FR4
PC board (1 oz Cu) with recommended footprint (see
last page)
Steady-State Power: 0.5 watts at end cap
temperature T
EC
< 125
o
C or 0.5 watts at ambient T
A
<
º
50 C when mounted on FR4 PC board as described
for thermal resistance above (also see Figure 2)
Forward voltage @200 mA: 1.1 volts
Solder Temperatures: 260
º
C for 10 s (max)
MECHANICAL AND PACKAGING
•
•
•
CASE: Hermetically sealed glass DO-213AA
(SOD80 or MLL34) MELF style package
TERMINALS: End caps tin-lead plated solderable
per MIL-STD-750, method 2026
POLARITY: Cathode indicated by band where
diode is to be operated with the banded end positive
with respect to the opposite end for Zener regulation
MARKING: cathode band only
TAPE & REEL option: Standard per EIA-481-B with
12 mm tape, 2000 per 7 inch reel or 5000 per 13
inch reel (add “TR” suffix to part number)
WEIGHT: 0.04 grams
See package dimensions on last page
•
•
•
•
•
•
•
1N746UR-1 –759AUR-1
1N4370UR-1 – 4372AUR-1
Copyright
2003
11-03-2003 REV 0
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 1
SCOTTSDALE DIVISION
1N746UR-1 thru 1N759AUR-1 and
1N4370UR-1 thru 1N4372AUR-1
(or MLL746-1 thru MLL759A-1 and
MLL4370-1 thru MLL4372A-1)
Surface Mount 500 mW Zener Diodes
ELECTRICAL CHARACTERISTICS* @ 25
o
C
INDUSTRY
PART
NUMBER
(NOTES 1 & 5)
1N4370UR-1
1N4371UR-1
1N4372UR-1
1N746UR-1
1N747UR-1
1N748UR-1
1N749UR-1
1N750UR-1
1N751UR-1
1N752UR-1
1N753UR-1
1N754UR-1
1N755UR-1
1N756UR-1
1N757UR-1
1N758UR-1
1N759UR-1
NOMINAL
ZENER
VOLTAGE
V
Z
@
I
ZT
(NOTE 2)
VOLTS
2.4
2.7
3.0
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
ZENER
TEST
CURRENT
MAXIMUM
ZENER
IMPEDANCE
Z
ZT
@
I
ZT
(NOTE 3)
OHMS
30
30
29
28
24
23
22
19
17
11
7
5
6
8
10
17
30
MAXIMUM REVERSE
CURRENT I
R
@ V
R
= 1 VOLT
@25ºC
µA
100
75
50
10
10
10
2
2
1
1
.1
.1
.1
.1
.1
.1
.1
@+150ºC
µA
200
150
100
30
30
30
30
30
20
20
20
20
20
20
20
20
20
MAXIMUM
ZENER
CURRENT
(NOTE 4)
mA
150
135
120
110
100
95
85
75
70
65
60
55
50
45
40
35
30
TYPICAL
TEMP COEFF.
OF ZENER
VOLTAGE
α
VZ
o
%/ C
-.085
-.080
-.075
-.066
-.058
-.046
-.033
-.015
+/-.010
+.030
+.049
+.053
+.057
+.060
+.061
+.062
+.062
WWW .
Microsemi
.C
OM
I
ZT
mA
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
I
ZM
* JEDEC Registered Data
NOTE 1:
Standard tolerance on types shown is +/- 10%. Suffix letter A denotes +/- 5% tolerance; suffix
letter C denotes +/- 2%; and suffix letter D denotes +/- 1% tolerance.
NOTE 2:
Voltage measurements to be performed 20 seconds after application of dc test current.
NOTE 3:
Zener impedance derived by superimposing on
I
ZT
, a 60 cps, rms ac current equal to 10%
I
ZT
(2 mA ac). See MicroNote 202 for
typical zener Impedance variation with different operating currents.
NOTE 4:
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 of 400 mW.
NOTE 5:
These may be ordered as either 1N4370UR-1 thru 1N4372AUR-1 and 1N746UR-1 thru 1N758AUR-1, or as MLL4370-1 thru
MLL4372A-1 and MLL746-1 thru MLL758A-1. For military types, use the 1NxxxUR-1 format and also include JAN, JANTX, or JANTXV
prefix for desired screening level, e.g. JANTX1N4370UR-1, JANTXV1N746AUR-1, JANTXV1N758UR-1, etc.
GRAPHS
RATED POWER DISSIPATION - mW
Typical Capacitance in Picofarads (pf)
T
EC
1N746UR-1 –759AUR-1
1N4370UR-1 – 4372AUR-1
T
A
T
A
T
EC
End Cap Temperature ( C), or
Ambient Temperature on FR4 PC BOARD
o
Zener Voltage V
Z
FIGURE 1
POWER DERATING CURVE
Copyright
2003
11-03-2003 REV 0
FIGURE 2
CAPACITANCE vs. ZENER VOLTAGE
(TYPICAL)
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 2
SCOTTSDALE DIVISION
1N746UR-1 thru 1N759AUR-1 and
1N4370UR-1 thru 1N4372AUR-1
(or MLL746-1 thru MLL759A-1 and
MLL4370-1 thru MLL4372A-1)
Surface Mount 500 mW Zener Diodes
WWW .
Microsemi
.C
OM
PACKAGE DIMENSIONS
DIM
A
B
C
INCHES
MIN
MAX
0.063
0.067
0.130
0.146
0.016
0.022
MILLIMETERS
MIN
MAX
1.60
1.70
3.30
3.70
0.41
0.55
A
B
C
PAD LAYOUT
INCHES
.200
.055
.080
mm
5.08
1.40
2.03
1N746UR-1 –759AUR-1
1N4370UR-1 – 4372AUR-1
Copyright
2003
11-03-2003 REV 0
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 3
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