LEADLESS GLASS ZENER DIODES
WWW.Microsemi .COM
SCOTTSDALE DIVISION
1N3821UR-1 thru 1N3830AUR-1, e3 or
MLL3821 thru MLL3830A, e3
1N3821UR-1 thru
1N3830AUR-1,e3 or
MLL3821 thru MLL3830A,e3 hru MLL3830A,e3
DESCRIPTION APPEARANCE
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.
DO-213AB
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
FEATURES APPLIC ATIONS / BENEFITS
• Leadless package for surfac e 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 JANT XV with MQ, MX
or MV prefixes respectively for part numbers, e.g.
MX1N3821AUR-1, MV1N382 8AUR-1, etc.
• Axial lead “thru-hole” DO-13 p ackages per JEDEC
registration available as 1N3821A thru 1N3830A (see
separate data sheet with MIL-PRF- 19500/115
qualification)
• RoHS Compliant devices avai lable by adding “e3” suffix
• Regulates voltage over a broad op erating current
and temperature range
• Leadless package for surfac e 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 RAT ING S MECHANICAL AND PACKAGING
• Power dissipation at 25ºC: 1.5 watts (also see derating
in Figure 1).
• Operating and Storage temperature: -65ºC to +175ºC
• Thermal Resistance: 40 ºC/W junction to en d cap, or
120ºC/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 TEC < 115oC, or 1.25 watts at TA = 25ºC
when mounted on FR4 PC board and recommended
footprint as described for thermal resistance (also se e
Figure 1)
• Forward voltage @200 mA: 1.2 volts (maximum)
• Solder Temperatures: 260 ºC for 10 s (max)
• CASE: Hermetically sealed glass MELF package
• TERMINALS: Tin-Lead (SN/Pb) or RoHS
compliant annealed matte-T in (Sn) plating
solderable per MIL-STD-750, method 2 02 6
• POLARITY: Cathode indicated by band. Dio de
to be operated with the bande d end p ositive 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 l ast page
Microsemi
Scottsdale Division Page 1
Copyright © 2006
3-12-2006 REV C 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
LEADLESS GLASS ZENER DIODES
WWW.Microsemi .COM
SCOTTSDALE DIVISION
1N3821UR-1 thru 1N3830AUR-1, e3 or
MLL3821 thru MLL3830A, e3
1N3821UR-1 thru
1N3830AUR-1,e3 or
MLL3821 thru MLL3830A,e3
*ELECTRICAL CHARACTERISTICS @ 25oC
MAXIMUM ZENER IMPEDANCE
(Note 2)
NOMINAL
ZENER
VOLTAGE
VZ @ IZT
(NOTE 1)
ZENER
TEST
CURRENT
IZT ZZT @ IZT ZZK@ IZK= 1 mA
MAXIMUM
ZENER
CURRENT
IZM
(Note 3)
MAXIMUM
REVERSE
CURRENT
IR @ VR
TYPICAL
TEMP.COEFF.
OF ZENER
VOLTAGE
αVZ
INDUSTRY
TYPE
NUMBER**
(NOTE 1)
MICROSEM
I PART
NUMBER
(NOTE 3)
VOLTS mA OHMS OHMS mA μA Volt
s %/oC
1N3821UR-1
1N3821AUR-1
1N3822UR-1
1N3822AUR-1
MLL3821
MLL3821A
MLL3822
MLL3822A
3.3
3.3
3.6
3.6
76
76
69
69
10
10
10
10
400
400
400
400
414
414
378
378
100
100
100
100
1
1
1
1
-.066
-.066
-.058
-.058
1N3823UR-1
1N3823AUR-1
1N3824UR-1
1N3824AUR-1
MLL3823
MLL3823A
MLL3824
MLL3824A
3.9
3.9
4.3
4.3
64
64
58
58
9
9
9
9
400
400
400
400
357
357
320
320
50
50
10
10
1
1
1
1
-.046
-.046
-.033
-.033
1N3825UR-1
1N3825AUR-1
1N3826UR-1
1N3826AUR-1
MLL3825
MLL3825A
MLL3826
MLL3826A
4.7
4.7
5.1
5.1
53
53
49
49
8
8
7
7
500
500
550
550
291
291
267
267
10
10
10
10
1
1
1
1
-.015
-.015
+/-.010
+/-.010
1N3827UR-1
1N3827AUR-1
1N3828UR-1
1N3828AUR-1
MLL3827
MLL3827A
MLL3828
MLL3828A
5.6
5.6
6.2
6.2
45
45
41
41
5
5
2
2
600
600
700
700
243
243
219
219
10
10
10
10
2
2
3
3
+.030
+.030
+.049
+.049
1N3829UR-1
1N3829AUR-1
1N3830UR-1
1N3830AUR-1
MLL3829
MLL3829A
MLL3830
MLL3830A
6.8
6.8
7.5
7.5
37
37
34
34
1.5
1.5
1.5
1.5
500
500
250
250
200
200
182
182
10
10
10
10
3
3
3
3
+.053
+.053
+.057
+.057
* JEDEC registered data for 1N3821 thru 3830A equivalents except for lower reverse (leakage) current IR and higher maximum zener current IZM.
** 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% tol erance. If tighter tolerance is
required, suffix C is used to identify +/-2%; and suffix D is to identify +/-1% tolerance. VZ is measured with the diod e in
thermal equilibrium in 25oC still air. T he test currents (IZT) at the listed n omi nal 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 valu e equal to 10% of the dc zener current
(IZT or IZK) is superimposed on IZT or IZK. Zener impedance is measured at 2 points to ensure a sharp knee on the
breakdown curve and to e liminate 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.
Microsemi
Scottsdale Division Page 2
Copyright © 2006
3-12-2006 REV C 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
LEADLESS GLASS ZENER DIODES
WWW.Microsemi .COM
SCOTTSDALE DIVISION
1N3821UR-1 thru 1N3830AUR-1, e3 or
MLL3821 thru MLL3830A, e3
1N3821UR-1 thru
1N3830AUR-1,e3 or
MLL3821 thru MLL3830A,e3 ru MLL3830A,e3
OUTLINE AND CIRCUIT
STEADY-STATE POWER DERATING
PD Power Dissipation (WATTS)
TEC
TA
Temperature (oC). FIGURE 2 Typical Capacitance vs. Reverse Voltage
FIGURE 1 Typical Zener Impedance vs
Zener Current for Types Shown
PACKAGE DIMEN SIONS
INCHES MILLIMETERS
DIM MIN MAX MIN MAX
0.094 0.105 2.39 2.66
A 0.189 0.205 4.80 5.20
B 0.016 0.022 0.41 0.55
C
Microsemi
Scottsdale Division Page 3
Copyright © 2006
3-12-2006 REV C
h
FIGURE 3 Typical Zener Voltage
Temperature Coeff. vs. Zener Voltage
INCHES mm
A .276 7.00
B 0.070 1.8
C 0.110 2.8
PAD LAYOUT
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
