1N5221 thru 1N5281B DO-35
Silicon 500 mW Zener Diodes
S C O T T S D A L E D I V I S I O N
DESCRIPTION
APPEARANCE
DO-35
(DO-204AH)
The popular 1N5221 thru 1N5281B series of 0.5 watt Zener Voltage Regulators
provides a selection from 2.4 to 200 volts in standard 5% or 10% tolerances as
well as tighter tolerances identified by different suffix letters on the part number.
These glass axial-leaded DO-35 Zeners are also available in various military
screening levels by adding a prefix identifier as described in the Features
section. 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
FEATURES
APPLICATIONS / BENEFITS
•
•
•
JEDEC registered 1N5221 to 1N5281B
Internal bonds optionally available with “-1” suffix
•
Regulates voltage over a broad operating current
and temperature range
•
•
Extensive selection from 2.4 to 200 V
Options for screening in accordance with MIL-PRF-
19500 for JAN, JANTX, JANTXV, and JANS are
available by adding MQ, MX, MV, or MSP prefixes
respectively to part numbers with “-1” suffix.
Surface mount equivalents available as MLL5221 to
MLL5281B in the DO-213AA MELF style package
including “-1” suffix options (consult factory for others)
Standard voltage tolerances are plus/minus 5%
with B suffix, 10 % with A suffix identification
•
Tight tolerances available in plus or minus 2% or
1% with C or D suffix respectively
Flexible axial-lead mounting terminals
Nonsensitive to ESD (MIL-STD-750 Method 1020)
Minimal capacitance (see Figure 2)
•
•
•
•
•
DO-7 glass body axial-leaded Zener equivalents are
also available
MAXIMUM RATINGS
MECHANICAL AND PACKAGING
•
Power dissipation at 25ºC: 0.5 watts (also see derating
in Figure 1).
•
•
•
CASE: Hermetically sealed axial-lead glass DO-35
(DO-204AH) package
•
•
Operating and Storage temperature: -65ºC to +175ºC
TERMINALS: Leads, tin-lead plated 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
Thermal Resistance: 250 ºC/W junction to lead at 3/8
(10 mm) lead length from body, or 310ºC/W junction to
ambient when mounted on FR4 PC board (1 oz Cu)
with 4 mm2 copper pads and track width 1 mm, length
25 mm
•
•
MARKING: Part number
•
Steady-State Power: 0.5 watts at TL < 50oC 3/8 inch (10
mm) from body or 0.48 W at TA < 25ºC when mounted
on FR4 PC board as described for thermal resistance
above (also see Figure1)
TAPE & REEL option: Standard per EIA-296 (add
“TR” suffix to part number)
•
•
WEIGHT: 0.2 grams
See package dimensions on last page
•
•
Forward voltage @200 mA: 1.1 volts (maximum)
Solder Temperatures: 260 ºC for 10 s (max)
ELECTRICAL CHARACTERISTICS @ 25°C
Max Zener Impedance
Max Reverse Current
A, B, C & D Suffix Only
Max Zener
Voltage Temp.
Coeff.
Nominal
Zener
A & B Suffix Only
Note 2
Test
Current
IZT
Non-Suffix
JEDEC
Type No.
Note 1
Voltage
(A & B Suffix
Only)
IR
@
VR
I
R @ VR Used
For Suffix A
µA
ZZK @ IZK = 0.25
V
Z @ IZT
ZZT @ IZK
µA
Volts
mA
mA
Ohms
α
VZ (% / oC)
Note 3
-0.085
Volts
Ohms
A
B,C & D
1N5221
1N5222
1N5223
1N5224
1N5225
1N5226
1N5227
1N5228
1N5229
1N5230
2.4
2.5
2.7
2.8
3.0
3.3
3.6
3.9
4.3
4.7
20
20
20
20
20
20
20
20
20
20
30
30
30
30
29
28
24
23
22
19
1200
1250
1300
1400
1600
1600
1700
1900
2000
1900
100
0.95
0.95
0.95
0.95
0.95
0.95
0.95
0.95
0.95
1.9
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
2.0
200
200
150
150
100
100
100
75
100
75
75
50
25
15
10
5.0
50
-0.085
-0.080
-0.080
-0.075
-0.070
-0.065
-0.060
50
+/-0.055
+/-0.030
50
Copyright 2003
Microsemi
Page 1
6-18-2003 REV A
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503