1N746AUR-1 1N759AUR-1,
1N4370AUR-1 1N4372AUR-1
Qualified Levels:
JAN, JANTX, and
Silicon MELF 500 mW Zener Diodes
Available on
JANTXV
commercial
Qualified per MIL-PRF-19500/127
versions
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
glass, surface mount DO-213AA 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.
Important: For the latest information, visit our website 1N746AUR-1 1N759AUR-1,
1N4370AUR-1 1N4372AUR-1
MECHANICAL and PACKAGING
CASE: Hermetically sealed glass case package.
TERMINALS: Tin/lead plated or RoHS compliant matte-tin (on commercial grade only) over copper clad steel. Solderable per
MIL-STD-750, method 2026.
POLARITY: Cathode end is banded.
MOUNTING: The axial coefficient of expansion (COE) of this device is approximately +6PPM/C. The COE of the mounting
surface system should be selected to provide a suitable match with this device.
MARKING: Part number.
TAPE & REEL option: Standard per EIA-296. Consult factory for quantities.
WEIGHT: Approximately 0.04 grams.
See Package Dimensions on last page.
PART NOMENCLATURE
JAN 1N746 A UR -1 (e3)
Reliability Level RoHS Compliance
JAN = JAN level e3 = RoHS compliant (available
JANTX = JANTX level on commercial grade only)
JANTXV = JANTXV level Blank = non-RoHS compliant
Blank = Commercial
Metallurgically Bonded
JEDEC type number
(see Electrical Characteristics
Surface Mount Package type
table)
Zener Voltage Tolerance
A = 5%
C = 2%
D = 1%
SYMBOLS & DEFINITIONS
Symbol Definition
I Reverse Current: The maximum reverse (leakage) current that will flow at the specified voltage and temperature.
R
IZ, IZT, IZK Regulator Current: The dc regulator current (IZ), at a specified test point (IZT), near breakdown knee (IZK).
I Maximum Regulator (Zener) Current: The maximum rated dc current for the specified power rating.
ZM
I Maximum Zener Surge Current: The non-repetitive peak value of Zener surge current at a specified wave form.
ZSM
V Maximum Forward Voltage: The maximum forward voltage the device will exhibit at a specified current.
F
V Reverse Voltage: The reverse voltage dc value, no alternating component.
R
V Zener Voltage: The Zener voltage the device will exhibit at a specified current (I ) in its breakdown region.
Z Z
Dynamic Impedance: The small signal impedance of the diode when biased to operate in its breakdown region at a
Z or Z
ZT ZK
specified rms current modulation (typically 10% of I or I ) and superimposed on I or I respectively.
ZT ZK ZT ZK
T4-LDS-0288-1, Rev. 1 (5/23/13) 2013 Microsemi Corporation Page 2 of 6