1N746-759A-1;1N4370-7372A-1 Datasheet by Microchip Technology

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I o Microsemi ’LHS Qualified Levels gart nomenclature e htlQ://va.micmsemi.ccm MicmNme 050 99 Figures 1 and 2 99% Also available in I N746AUR-l — 1 N759AUR nd 1 N4370AU 1 N4372AUR-l Msc — Lawrence Msc — Ireland
T4-LDS-0288, Rev. 1 (5/23/13) ©2013 Microsemi Corporation Page 1 of 6
1N746A-1 – 1N759A-1,
1N4370A-1 – 1N4372A-1
Available on
commercial
versions
Silicon 500 mW Zener Diodes
Qualified per MIL-PRF-19500/127
Qualified Levels:
JAN, JANTX, and
JANTXV
DESCRIPTION
This popular series of 500 mW Zener voltage regulators provides a selection from 2.4 to 12
volts in a standard 5% tolerance as well as available tighter 2% and 1% tolerances. These
axial-leaded, glass DO-35 Zeners feature an internal metallurgical bond and are military
qualified to the JAN, JANTX, and JANTXV level. A RoHS compliant commercial grade only
version is also available.
DO-35 (DO-204AH)
Package
Also available in:
DO-213AA package
(MELF surface mount)
1N746AUR-1
1N759AUR-1 and
1N4370AUR-1
1N4372AUR-1
Important: For the latest information, visit our website http://www.microsemi.com.
FEATURES
JEDEC registered 1N746 through 1N759A and 1N4370 through 1N4372A series.
Standard voltage tolerance is ± 5% with optional tighter tolerances of ± 2% or 1%.
Internal metallurgical bond.
JAN, JANTX, and JANTXV qualifications are available per MIL-PRF-19500/127.
(See part nomenclature for all available options.)
RoHS compliant versions available (commercial grade only).
APPLICATIONS / BENEFITS
Regulates voltage over a broad range of temperature and current.
Regulated voltage range from 2.4 to 12 V.
Flexible axial-lead mounting terminals.
Non-sensitive to ESD per MIL-STD-750 method 1020.
Minimal capacitance.
Inherently radiation hard as described in Microsemi MicroNote 050.
MAXIMUM RATINGS
MSC Lawrence
6 Lake Street,
Lawrence, MA 01841
Tel: 1-800-446-1158 or
(978) 620-2600
Fax: (978) 689-0803
MSC Ireland
Gort Road Business Park,
Ennis, Co. Clare, Ireland
Tel: +353 (0) 65 6840044
Fax: +353 (0) 65 6822298
Website:
www.microsemi.com
Parameters/Test Conditions
Symbol
Value
Unit
Operating and Storage Temperature
TJ and TSTG
-65 to +175
ºC
Thermal Resistance Junction-to-Lead
@ .375 inch (9.53 mm) lead length from body
R
ӨJL
250
ºC/W
Thermal Resistance Junction-to-Ambient when
mounted on PCB
(1)
R
ӨJA
300
ºC/W
Average Rated Power Dissipation
@ TL = +50°C .375 inch (9.53 mm) from body (2)
@ TA = 55°C mounted on PCB
PM(AV)
0.5
0.4
W
Forward Voltage @ IF = 200 mA
VF
1.1
V
Solder Temperature @ 10 s
TSP
260
oC
NOTES: 1. See Figures 1 and 2 for derating curves. TA = +75 °C on an FR4 PC board with 1 oz copper
metalization.
2. The 0.5 W linearly derates starting at TL = 50 °C and goes to zero at 175 °C. For ambient TA
condition on a typical PC board, it linearly derates from 400 mW starting at 55 °C and goes to zero at
175 °C (see Figure 2).
Package Dimensions Reliability Level RoHS Comgliance available on commercial grade only Metallugically Bonded JEDEC tyne number Electrical Characterislics Zener Voltage Tolerance
T4-LDS-0288, Rev. 1 (5/23/13) ©2013 Microsemi Corporation Page 2 of 6
1N746A-1 – 1N759A-1,
1N4370A-1 – 1N4372A-1
MECHANICAL and PACKAGING
CASE: Hermetically sealed axial-lead glass DO-35 (DO-204 AH) package.
TERMINALS: Tin-lead or RoHS compliant annealed matte-tin plating (on commercial grade only). Solderable per MIL-STD-750,
method 2026.
MARKING: Part number.
POLARITY: Cathode indicated by band. Diode to be operated with the banded end positive with respect to the opposite end for
Zener regulation.
TAPE & REEL option: Standard per EIA-296 (add “TR” suffix to part number).
WEIGHT: Approximately 0.2 grams
See Package Dimensions on last page.
PART NOMENCLATURE
JAN 1N746 A -1 (e3)
Reliability Level
JAN = JAN level
JANTX = JANTX level
JANTXV = JANTXV level
Blank = Commercial
JEDEC type number
(see Electrical Characteristics
table)
Zener Voltage Tolerance
A = 5%
C = 2%
D = 1%
RoHS Compliance
e3 = RoHS compliant (available
on commercial grade only)
Blank = non-RoHS compliant
Metallurgically Bonded
SYMBOLS & DEFINITIONS
Symbol
Definition
IR
Reverse Current: The maximum reverse (leakage) current that will flow at the specified voltage and temperature.
IZ, IZT, IZK
Regulator Current: The dc regulator current (IZ), at a specified test point (IZT), near breakdown knee (IZK).
IZM
Maximum Regulator (Zener) Current: The maximum rated dc current for the specified power rating.
IZSM
Maximum Zener Surge Current: The non-repetitive peak value of Zener surge current at a specified wave form.
VF
Maximum Forward Voltage: The maximum forward voltage the device will exhibit at a specified current.
VR
Reverse Voltage: The reverse voltage dc value, no alternating component.
VZ
Zener Voltage: The Zener voltage the device will exhibit at a specified current (IZ) in its breakdown region.
ZZT or ZZK Dynamic Impedance: The small signal impedance of the diode when biased to operate in its breakdown region at a
specified rms current modulation (typically 10% of IZT or IZK) and superimposed on IZT or IZK respectively.
0LT a MicroNote 202
T4-LDS-0288, Rev. 1 (5/23/13) ©2013 Microsemi Corporation Page 3 of 6
1N746A-1 – 1N759A-1,
1N4370A-1 – 1N4372A-1
ELECTRICAL CHARACTERISTICS @ 25 ºC
JEDEC
TYPE NO.
(NOTE 1)
NOMINAL
ZENER
VOLTAGE
VZ @ IZT
(NOTE 2)
MAXIMUM
ZENER
IMPEDANCE
ZZT @ IZT
(NOTE 3)
MAXIMUM
REVERSE
VOLTAGE
VR
MAXIMUM REVERSE
CURRENT
IR @ VR
MAXIMUM
ZENER
CURRENT
IZM
(NOTE 4)
TEMPERATURE
COEFFICIENT
OF ZENER
VOLTAGE
αVZ
@ 25 °C
@ +150 °C
Volts
Ohms
Volts
µA
µA
mA
% / °C
1N4370A-1
1N4371A-1
1N4372A-1
2.4
2.7
3.0
30
30
29
1.0
1.0
1.0
100
60
30
200
150
100
155
140
125
-0.085
-0.080
-0.075
1N746A-1
1N747A-1
1N748A-1
3.3
3.6
3.9
24
22
20
1.0
1.0
1.0
5
3
2
30
30
30
120
110
100
-0.070
-0.065
-0.060
1N749A-1
1N750A-1
1N751A-1
1N752A-1
4.3
4.7
5.1
5.6
18
15
14
8
1.0
1.5
2.0
2.5
2
5
5
5
50
50
50
50
90
85
75
70
-0.055 / +.020
-0.043 / +.025
-0.030 / +.030
-0.028 / +.036
1N753A-1
1N754A-1
1N755A-1
1N756A-1
6.2
6.8
7.5
8.2
3
3
4
5
3.5
4.0
5.0
6.0
5
2
2
1
50
50
50
50
65
60
55
50
+0.045
+0.050
+0.058
+0.062
1N757A-1
1N758A-1
1N759A-1
9.1
10.0
12.0
6
7
10
7.0
8.0
9.0
1
1
1
50
50
50
45
40
35
+0.068
+0.076
+0.080
NOTES:
1 The JEDEC type numbers shown (A suffix) have a ± 5% tolerance on nominal Zener voltage.
2. Voltage measurements to be performed 20 seconds after application of dc test current.
3. Zener impedance derived by superimposing on IZT, a 60 cps, rms current equal to 10% IZT (20 mA). See MicroNote 202 for typical Zener
Impedance variation with different operating currents.
4. 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 of 400 mW.
I O Microsemi 600 500 400 300 200 100 25 50 75 100 125 150 175 200 TemgeraturerPower Derating Curve 450 400 350 300 250 200 1 50 1 00 50 25 50 75 100 125 150 175 200 TemgeraturerPower Derating Curve
T4-LDS-0288, Rev. 1 (5/23/13) ©2013 Microsemi Corporation Page 4 of 6
1N746A-1 – 1N759A-1,
1N4370A-1 – 1N4372A-1
GRAPHS
TL (ºC) (Leads .375”)
FIGURE 1
Temperature-Power Derating Curve
T(PCB) (ºC) (PCB)
FIGURE 2
Temperature-Power Derating Curve
DC Operations Maximum Rating (mW)
DC Operations Maximum Rating (mW)
1000 1Im 10 1 10’4 10’3 «0‘2 m" 1 1o 102 103 Thermal Imgedance PCB mount 1mm 10D 10 1o" 10'3 10'2 HT1 1 1o 102 Thermal Imgedance
T4-LDS-0288, Rev. 1 (5/23/13) ©2013 Microsemi Corporation Page 5 of 6
1N746A-1 – 1N759A-1,
1N4370A-1 – 1N4372A-1
GRAPHS (continued)
Time (s)
FIGURE 3
Thermal Impedance PCB mount
Time (s)
FIGURE 4
Thermal Impedance
(TL = 25 ºC at 0.375 inch (9.53 mm) from body.)
Theta (°C/W)
Theta (°C/W)
cum-mm — LL BL é; 541+ POLARITY MARK (CATHODE)—/ LIIHTTV BD
T4-LDS-0288, Rev. 1 (5/23/13) ©2013 Microsemi Corporation Page 6 of 6
1N746A-1 – 1N759A-1,
1N4370A-1 – 1N4372A-1
PACKAGE DIMENSIONS
Ltr
Dimensions
Notes
Inch
Millimeters
Min
Max
Min
Max
BD
0.055
0.090
1.40
2.29
3
BL
0.120
0.200
3.05
5.08
4
LD
0.018
0.023
0.46
0.58
LL
1.000
1.500
25.40
38.10
LL1
-
0.050
-
1.27
5
NOTES:
1. Dimensions are in inches.
2. Millimeters are given for information only.
3. Dimension BD shall be measured at the largest diameter.
4. The BL dimension shall include the entire body including slugs.
5. Dimension LU shall include the sections of the lead over which the diameter is uncontrolled. This
uncontrolled area is defined as the zone between the edge of the diode body and extending 0.050 inch
(1.27 mm) onto the leads.
6. In accordance with ASME Y14.5M, diameters are equivalent to Φx symbology.

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