1N4678-1 thru 1N4717-1
Screening in
reference to
Available on
500 mW AXIAL-LEADED ZENER DIODES
commercial
MIL-PRF-19500
versions
available
DESCRIPTION
The 1N4678-1 thru 1N4717-1 series of 0.5 watt Zener voltage regulators provides a selection
from 1.8 to 43 volts in standard 5% tolerances as well as tighter tolerances. These axial-
leaded glass DO-35 Zeners are available with an internal metallurgical bond similar to military
requirements for similar Zeners. Microsemi also offers numerous other Zener products to
meet higher and lower power applications.
Important: For the latest information, visit our website 1N4678-1 thru 1N4717-1
MECHANICAL and PACKAGING
CASE: Hermetically sealed axial-lead glass DO-35 (DO-204AH) package.
TERMINALS: Leads tin-lead plated or RoHS compliant matte-tin plating available (on commercial grade only) solderable per
MIL-STD-750, method 2026.
POLARITY: Cathode indicated by band where diode is to be operated with the banded end positive with respect to the opposite
end for Zener regulation.
MARKING: Part number.
TAPE & REEL option: Standard per EIA-296 (add TR suffix to part number). Consult factory for quantities.
WEIGHT: 0.2 grams.
See Package Dimensions on last page.
PART NOMENCLATURE
MQ 1N4678 C -1 (e3)
Reliability Level RoHS Compliance
MQ = JAN Level e3 = RoHS Compliant (available
MX = JANTX Level on commercial grade only)
MV = JANTXV Level Blank = non-RoHS Compliant
MSP = JANS Level
Blank = Commercial Metallurgically Bonded
JEDEC type number
Zener Voltage Tolerances
(see Electrical Characteristics
Blank = 5%
table)
C = 2%
D = 1%
SYMBOLS & DEFINITIONS
Symbol Definition
I or I Regulator Current: The dc regulator current (I ), at a specified test point (I ), near breakdown knee (I ).
ZT ZK Z ZT ZK
Reverse Current: The maximum reverse (leakage) current that will flow at the specified voltage and temperature.
I
R
I Maximum Regulator (Zener) Current: The maximum rated dc current for the specified power rating.
ZM
T Temperature Solder Pad: The maximum solder temperature that can be safely applied to the terminal.
SP
V Reverse Voltage: The reverse voltage dc value, no alternating component.
R
Zener Voltage: The Zener voltage the device will exhibit at a specified current (I ) in its breakdown region.
V Z
Z
T4-LDS-0240, Rev. 1 (112022) 2011 Microsemi Corporation Page 2 of 5