1N4678-1 ZENER DIODES Datasheet

1N4678-1 Datasheet, PDF, Equivalent


Part Number

1N4678-1

Description

500 mW AXIAL-LEADED ZENER DIODES

Manufacture

Microsemi

Total Page 5 Pages
Datasheet
Download 1N4678-1 Datasheet


1N4678-1
1N4678-1 thru 1N4717-1
Available on
commercial
versions
500 mW AXIAL-LEADED ZENER DIODES
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.
Screening in
reference to
MIL-PRF-19500
available
Important: For the latest information, visit our website http://www.microsemi.com.
FEATURES
JEDEC registered 1N4678 thru 1N4717 series.
Internal metallurgical bond.
Tighter voltage tolerances of 2% and 1% are available.
Up-screening available in reference to MIL-PRF-19500.
(See part nomenclature for all available options).
RoHS compliant devices available (commercial grade only).
APPLICATIONS / BENEFITS
Regulates voltage over a broad operating current and temperature range.
Guaranteed maximum voltage regulation 10 μA to 100 μA.
Voltage selection from 1.8 to 43 V.
Flexible axial-lead mounting terminals.
Non-sensitive to ESD per MIL-STD-750 method 1020.
Minimal capacitance (see Figure 3).
Inherently radiation hard as described in Microsemi’s “MicroNote 050”.
DO-35 (DO-204AH)
Package
Also available in:
DO-213AA
(surface mount)
1N4678UR-1 – 1N4717UR-1
MAXIMUM RATINGS
Parameters/Test Conditions
Junction and Storage Temperature
Thermal Resistance Junction-to-Lead (1)
Thermal Resistance Junction-to-Ambient (2)
Steady-State Power Dissipation (3)
Forward Voltage @ 200 mA
Solder Temperature @ 10 s
Symbol
TJ and TSTG
R ӨJL
R ӨJA
PD
VF
TSP
Value
-65 to +175
250
310
0.5
1.1
260
Unit
oC
oC/W
oC/W
W
V
oC
Notes:
1. At 3/8 (10 mm) lead length from body.
2. When mounted on FR4 PC board (1 oz Cu) with 4 mm2 copper pads and track width 1 mm, length 25 mm.
3. At T L < 50 oC 3/8 inch (10 mm) from body or 0.48 W at T A < 25 ºC when mounted on FR4 PC board as
described for thermal resistance (see Figure 2 for derating).
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
T4-LDS-0240, Rev. 1 (112022)
©2011 Microsemi Corporation
Page 1 of 5

1N4678-1
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.
Reliability Level
MQ = JAN Level
MX = JANTX Level
MV = JANTXV Level
MSP = JANS Level
Blank = Commercial
JEDEC type number
(see Electrical Characteristics
table)
PART NOMENCLATURE
MQ 1N4678 C -1 (e3)
RoHS Compliance
e3 = RoHS Compliant (available
on commercial grade only)
Blank = non-RoHS Compliant
Metallurgically Bonded
Zener Voltage Tolerances
Blank = 5%
C = 2%
D = 1%
Symbol
IZT or IZK
IR
I ZM
TSP
VR
VZ
SYMBOLS & DEFINITIONS
Definition
Regulator Current: The dc regulator current (IZ), at a specified test point (IZT), near breakdown knee (IZK).
Reverse Current: The maximum reverse (leakage) current that will flow at the specified voltage and temperature.
Maximum Regulator (Zener) Current: The maximum rated dc current for the specified power rating.
Temperature Solder Pad: The maximum solder temperature that can be safely applied to the terminal.
Reverse Voltage: The reverse voltage dc value, no alternating component.
Zener Voltage: The Zener voltage the device will exhibit at a specified current (IZ) in its breakdown region.
T4-LDS-0240, Rev. 1 (112022)
©2011 Microsemi Corporation
Page 2 of 5


Features 1N4678-1 thru 1N4717-1 Available on com mercial versions 500 mW AXIAL-LEADED Z ENER DIODES DESCRIPTION The 1N4678-1 t hru 1N4717-1 series of 0.5 watt Zener v oltage regulators provides a selection from 1.8 to 43 volts in standard 5% tol erances as well as tighter tolerances. These axialleaded glass DO-35 Zeners ar e available with an internal metallurgi cal bond similar to military requiremen ts for similar Zeners. Microsemi also o ffers numerous other Zener products to meet higher and lower power application s. Screening in reference to MIL-PRF-1 9500 available Important: For the late st information, visit our website http: //www.microsemi.com. FEATURES • JEDEC registered 1N4678 thru 1N4717 series. • Internal metallurgical bond. • Ti ghter voltage tolerances of 2% and 1% a re available. • Up-screening availabl e in reference to MIL-PRF-19500. (See p art nomenclature for all available opti ons). • RoHS compliant devices availa ble (commercial grade only). APPLICATIONS / BENEFITS • Regula.
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