1N3821UR-1 thru 1N3830AUR-1, e3 or
MLL3821 thru MLL3830A, e3
SCOTTSDALE DIVISION
LEADLESS GLASS ZENER DIODES
DESCRIPTION
This surface mountable zener diode series is similar to the lower voltage
1N3821 thru 1N3830 JEDEC registration except it is in a surface mount
DO-213AB package outline. It is an ideal selection for applications of high
density and low parasitic requirements. Due to its glass hermetic qualities
and enhanced metallurgical bonded internal construction, it is also well
suited for high reliability applications. This can be acquired by a source
control drawing (SCD), or simply by ordering device types with a MQ, MX
or MV prefix for equivalent screening to JAN, JANTX or JANTXV
respectively.
IMPORTANT:
For the most current data, consult
MICROSEMI’s
website:
http://www.microsemi.com
APPEARANCE
WWW .
Microsemi
.C
OM
DO-213AB
FEATURES
•
•
•
•
•
•
Leadless package for surface mount equivalent to
1N3821 thru 1N3830A.
Ideal for high-density mounting
Lower voltage selections of 3.3 V to 7.5 V
Hermetically sealed, double-slug glass construction
Metallurgically enhanced contact construction
Options for screening in accordance with MIL-PRF-
19500/115 for JAN, JANTX, and JANTXV with MQ, MX
or MV prefixes respectively for part numbers, e.g.
MX1N3821AUR-1, MV1N3828AUR-1, etc.
Axial lead “thru-hole” DO-13 packages per JEDEC
registration available as 1N3821A thru 1N3830A (see
separate data sheet with MIL-PRF-19500/115
qualification)
RoHS Compliant devices available by adding “e3” suffix
•
•
•
•
•
•
•
•
•
APPLICATIONS / BENEFITS
Regulates voltage over a broad operating current
and temperature range
Leadless package for surface mounting
Tight voltage tolerances available
Ideal for high-density mounting
Metallurgically enhanced internal contact design
for greater reliability and lower thermal resistance
Nonsensitive to ESD
Hermetically sealed glass package
Specified capacitance (see Figure 2)
Inherently radiation hard as described in
Microsemi MicroNote 050
•
•
MAXIMUM RATINGS
•
•
•
Power dissipation at 25
º
C: 1.5 watts (also see derating
in Figure 1).
º
º
Operating and Storage temperature: -65 C to +175 C
Thermal Resistance: 40
º
C/W junction to end cap, or
120
º
C/W junction to ambient when mounted on FR4 PC
board (1 oz Cu) with recommended footprint (see last
page)
Steady-State Power: 1.50 watts at end-cap
temperature T
EC
< 115
o
C, or 1.25 watts at T
A
= 25
º
C
when mounted on FR4 PC board and recommended
footprint as described for thermal resistance (also see
Figure 1)
Forward voltage @200 mA: 1.2 volts (maximum)
Solder Temperatures: 260
º
C for 10 s (max)
•
•
MECHANICAL AND PACKAGING
CASE: Hermetically sealed glass MELF package
TERMINALS: Tin-Lead (SN/Pb) or RoHS
compliant annealed matte-Tin (Sn) plating
solderable per MIL-STD-750, method 2026
POLARITY: Cathode indicated by band. Diode
to be operated with the banded end positive with
respect to the opposite end for Zener regulation
MARKING: Cathode band only
TAPE & REEL optional: Standard per EIA-481-1-
A with 12 mm tape, 1500 per 7 inch reel or 5000
per 13 inch reel (add “TR” suffix to part number)
WEIGHT: 0.05 grams
•
See package dimensions on last page
•
1N3821UR-1 thru
1N3830AUR-1,e3 or
MLL3821 thru MLL3830A,e3
hru
•
•
•
•
•
•
Copyright
©
2006
3-12-2006 REV C
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 1
1N3821UR-1 thru 1N3830AUR-1, e3 or
MLL3821 thru MLL3830A, e3
SCOTTSDALE DIVISION
LEADLESS GLASS ZENER DIODES
WWW .
Microsemi
.C
OM
*ELECTRICAL CHARACTERISTICS @ 25
o
C
INDUSTRY
TYPE
NUMBER**
(NOTE 1)
MICROSEM
I PART
NUMBER
(NOTE 3)
NOMINAL
ZENER
VOLTAGE
ZENER
TEST
CURRENT
MAXIMUM ZENER IMPEDANCE
(Note 2)
MAXIMUM
ZENER
CURRENT
MAXIMUM
REVERSE
CURRENT
TYPICAL
TEMP.COEFF.
OF ZENER
VOLTAGE
V
Z
@ I
ZT
(NOTE 1)
VOLTS
I
ZM
Z
ZT
@ I
ZT
OHMS
I
ZT
mA
Z
ZK
@ I
ZK
= 1 mA
OHMS
(Note 3)
mA
I
R
@ V
R
μA
Volt
s
α
VZ
%/
o
C
1N3821UR-1
1N3821AUR-1
1N3822UR-1
1N3822AUR-1
1N3823UR-1
1N3823AUR-1
1N3824UR-1
1N3824AUR-1
1N3825UR-1
1N3825AUR-1
1N3826UR-1
1N3826AUR-1
1N3827UR-1
1N3827AUR-1
1N3828UR-1
1N3828AUR-1
1N3829UR-1
1N3829AUR-1
1N3830UR-1
1N3830AUR-1
MLL3821
MLL3821A
MLL3822
MLL3822A
MLL3823
MLL3823A
MLL3824
MLL3824A
MLL3825
MLL3825A
MLL3826
MLL3826A
MLL3827
MLL3827A
MLL3828
MLL3828A
MLL3829
MLL3829A
MLL3830
MLL3830A
3.3
3.3
3.6
3.6
3.9
3.9
4.3
4.3
4.7
4.7
5.1
5.1
5.6
5.6
6.2
6.2
6.8
6.8
7.5
7.5
76
76
69
69
64
64
58
58
53
53
49
49
45
45
41
41
37
37
34
34
10
10
10
10
9
9
9
9
8
8
7
7
5
5
2
2
1.5
1.5
1.5
1.5
400
400
400
400
400
400
400
400
500
500
550
550
600
600
700
700
500
500
250
250
414
414
378
378
357
357
320
320
291
291
267
267
243
243
219
219
200
200
182
182
100
100
100
100
50
50
10
10
10
10
10
10
10
10
10
10
10
10
10
10
1
1
1
1
1
1
1
1
1
1
1
1
2
2
3
3
3
3
3
3
-.066
-.066
-.058
-.058
-.046
-.046
-.033
-.033
-.015
-.015
+/-.010
+/-.010
+.030
+.030
+.049
+.049
+.053
+.053
+.057
+.057
*
JEDEC registered data for 1N3821 thru 3830A equivalents except for lower reverse (leakage) current I
R
and higher maximum zener current I
ZM
.
** When applicable, add MQ, MX, or MV prefix to the 1N3821AUR-1 thru 1N3828AUR-1 part numbers for screening options in accordance with MIL-PRF-19500/115.
NOTE 1:
Suffix A signifies a +/-5% tolerance on nominal zener voltage. No suffix designates +/-10% tolerance. If tighter tolerance is
required, suffix C is used to identify +/-2%; and suffix D is to identify +/-1% tolerance. V
Z
is measured with the diode in
thermal equilibrium in 25
o
C still air. The test currents (I
ZT
) at the listed nominal zener voltages provide a constant 0.25 watts
for this device series per JEDEC registration.
NOTE 2:
The zener impedance is derived when a 60 cycle ac current having an rms value equal to 10% of the dc zener current
(I
ZT
or I
ZK
) is superimposed on I
ZT
or I
ZK
. Zener impedance is measured at 2 points to ensure a sharp knee on the
breakdown curve and to eliminate unstable units. See MicroNote 202 for variation in dynamic impedance with different
zener currents.
NOTE 3:
This product series has been previously identified as MLL3821 thru MLL3830A by Microsemi. This alternate name
may still be used, however the Industry name of 1N3821UR-1 thru 1N3830UR-1 is preferred.
1N3821UR-1 thru
1N3830AUR-1,e3 or
MLL3821 thru MLL3830A,e3
Copyright
©
2006
3-12-2006 REV C
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 2
1N3821UR-1 thru 1N3830AUR-1, e3 or
MLL3821 thru MLL3830A, e3
SCOTTSDALE DIVISION
LEADLESS GLASS ZENER DIODES
OUTLINE AND CIRCUIT
WWW .
Microsemi
.C
OM
STEADY-STATE POWER DERATING
P
D
Power Dissipation (WATTS)
T
EC
T
A
Temperature (
o
C
)
.
FIGURE 1
Typical Zener Impedance vs
Zener Current for Types Shown
FIGURE 2
Typical Capacitance vs. Reverse Voltage
PACKAGE DIMENSIONS
DIM
A
B
C
INCHES
MIN
MAX
0.094
0.105
0.189
0.205
0.016
0.022
MILLIMETERS
MIN
MAX
2.39
2.66
4.80
5.20
0.41
0.55
1N3821UR-1 thru
1N3830AUR-1,e3 or
hru
MLL3821 thru MLL3830A,e3
FIGURE 3
Typical Zener Voltage
Temperature Coeff. vs. Zener Voltage
PAD LAYOUT
A
B
C
INCHES
.276
0.070
0.110
mm
7.00
1.8
2.8
Copyright
©
2006
3-12-2006 REV C
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 3
Microchip MCU
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