T4-LDS-0240-1, Rev. 1 (112022) ©2011 Microsemi Cor poration Page 1 of 5
1N4678UR-1 t h ru 1N4 71 7 UR-1
Available on
commercial
versions
500 mW SURFA CE MOUNT ZENER DIODES
Screeni ng in
reference to
MIL-PRF-19500
available
DESCRIPTION
The 1N4678UR-1 thr u 1N 471 7UR -1 seri es of 0.5 watt gl ass su r face mount DO-213AA Zener
vol tag e r egul ator s pr ovides a sel ection from 1.8 to 43 volts i n standard 5% toler ances as well
as tight er tolerances wit h a very low test cur r ent of 50 µA. These hav e an inter nal
metallurgical bond. Th i s typ e of i nt er nally b onded Zener package constructi on is also
avai lable with high-reliability up-s creening as des cri bed in th e Features sec tion. M icr osemi
als o offers numerous other Zener products to meet higher and lower p ower appl i cati ons.
DO-213AA Package
Also available in:
DO-35 (DO-204AH)
(s urf ace mount )
1N4678-1 – 1N4717-1
Important: For the lat est information, visit our website http://www.microsemi.com.
FEATURES
• Sur face mount equiv alent of JEDEC registered 1N4678 thru 1N4717 series.
• Internal metallurgi cal bond.
• Hermetically sealed surface mount package.
• Tighter voltage tolerances of 2% and 1% are available.
• Up-screening available in reference to MIL-PRF-19500 (see part nomenclature for all avail able
options).
• RoHS compliant devices available (commercial grade onl y).
APPLICATIONS / BENEF ITS
• Regulates voltage over a broad operating current and temperature range.
• Voltage selection from 1.8 to 43 V.
• Standard voltage tolerance +/- 5 %.
• Non-sensitive to ESD per MIL-STD-750 method 1020.
• Minimal capacitance (see Figure 2).
• Inherently radiation hard as described in Microse mi’s “Mic roNote 050”.
MAXI MUM RA TING S
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
Junction and Storage Temperature
TJ and TSTG
-65 to +175
oC
Thermal Resistance Junction-to-End Cap (1)
RӨJL
100
oC/W
Thermal Resistance Junction-to-Ambient (1)
RӨJA
250
oC/W
Steady-State Power Dissipation (2)
PD
0.5
W
Forward Voltage @ 100 mA
VF
1.5
V
Solder Temperature @ 10 s
TSP
260
oC
Notes: 1. When mounted on FR4 PC board (1 oz Cu) with recommended footprint (see last page).
2. At TEC < 125 oC or at am bie nt TA < 50 ºC when mounted on FR4 PC board.
T4-LDS-0240-1, Rev. 1 (112022) © 2011 Mic r osemi C or porati on Page 2 of 5
1N4678UR-1 t h ru 1N4 71 7 UR-1
M ECHANICAL and PACKAGING
• CASE: Hermetically sealed glass DO-213AA (SOD80 or MLL34) MELF style package.
• TERMINALS: End caps tin-lead plated or R oHS comp liant matte-tin plati ng available (on commercial 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: Cathode band only.
• TAPE & REEL option: Standard per EIA-481-1-B (add “TR” suffix to part number). Consult factory for quantities.
• WEIGHT: 0.04 grams.
• See Package Dimensions on l ast page.
PART NOMENCLATURE
MQ 1N4678 C UR -1 (e3)
Reliability Level
MQ (reference JAN)
MA reference JANT X
MX (reference JANTXV)
MXL (reference JANS)
Blank = Commercial
JEDEC type number
(see Electrical Characteristics
table)
RoHS Compli anc e
e3 = RoHS Compliant (available
on commercial grade only)
Blank = non-RoHS Compliant
Metallurgically Bonded
Surface Mount package
Zener Voltage Tolerances
Blank = 5%
C = 2%
D = 1%
SYMBOL S & DE F INIT IONS
Symbol
Definition
IZT or IZK
Regulator Current: The dc regulator current (IZ), at a speci fied test point (IZT), near breakdown knee (IZK).
IR
Reverse Current: The maximum reverse (leakage) current that will flow at the specified voltage and temperature.
IZM
Maximum Regulator (Zener) Current: The maximum rated dc current for the specified power rating.
TSP
Temperature Solder Pad: The maximum solder tem perature that can be safely applied to the terminal .
VR
Reverse Voltage: The reverse vol tage dc value, no alternating component.
VZ
Zener Voltage: The Zener voltage the device will exhi bit at a specified current (IZ) in its breakdown region.
T4-LDS-0240-1, Rev. 1 (112022) © 2011 Mic r osemi C or porati on Page 3 of 5
1N4678UR-1 t h ru 1N4 71 7 UR-1
ELECTRICAL CHARACTERI STI CS @ 25 oC u nless otherwise not ed.
JEDEC TYPE
NUMBER
(Note 1)
NOMINAL
ZENER
VOLTAGE
(Note 3)
ZENER TEST
CURRENT
MAXIMUM
VOLTAGE
REGULATION
(Note 2 & 3)
MAXIMUM REVERSE
LEAKAGE CURRENT
MAXIMUM dc
ZENER
CURRENT*
V
Z
I
ZT
∆V
Z
I
R
@ V
R
I
ZM
Volts
µA
Volts
µA
Volts
mA
1N4678UR-1
1N4679UR-1
1N4680UR-1
1N4681UR-1
1N4682UR-1
1.8
2.0
2.2
2.4
2.7
50
50
50
50
50
0.70
0.70
0.75
0.80
0.85
7.5
5.0
4.0
2.0
1.0
1.0
1.0
1.0
1.0
1.0
240
220
200
190
180
1N4683UR-1
1N4684UR-1
1N4685UR-1
1N4686UR-1
1N4687UR-1
3.0
3.3
3.6
3.9
4.3
50
50
50
50
50
0.90
0.95
0.95
0.97
0.99
0.8
7.5
7.5
5.0
4.0
1.0
1.5
2.0
2.0
2.0
170
160
150
140
130
1N4688UR-1
1N4689UR-1
1N4690UR-1
1N4691UR-1
1N4692UR-1
4.7
5.1
5.6
6.2
6.8
50
50
50
50
50
0.99
0.97
0.96
0.95
0.90
10.0
10.0
10.0
10.0
10.0
3.0
3.0
4.0
5.0
5.1
120
110
100
90
70
1N4693UR-1
1N4694UR-1
1N4695UR-1
1N4696UR-1
1N4697UR-1
7.5
8.2
8.7
9.1
10.0
50
50
50
50
50
0.75
0.50
0.10
0.08
0.10
10.0
1.0
1.0
1.0
1.0
5.7
6.2
6.6
6.9
7.6
63.6
58.0
54.8
52.4
49.6
1N4698UR-1
1N4699UR-1
1N4700UR-1
1N4701UR-1
1N4702UR-1
11.0
12.0
13.0
14.0
15.0
50
50
50
50
50
0.11
0.12
0.13
0.14
0.15
0.05
0.05
0.05
0.05
0.05
8.4
9.1
9.8
10.6
11.4
43.2
40.8
38.0
35.0
32.6
1N4703UR-1
1N4704UR-1
1N4705UR-1
1N4706UR-1
1N4707UR-1
16.0
17.0
18.0
19.0
20.0
50
50
50
50
50
0.16
0.17
0.18
0.19
0.20
0.05
0.05
0.05
0.05
0.01
12.1
12.9
13.6
14.4
15.2
30.8
29.0
26.4
25.0
23.8
1N4708UR-1
1N4709UR-1
1N4710UR-1
1N4711UR-1
1N4712UR-1
22.0
24.0
25.0
27.0
28.0
50
50
50
50
50
0.22
0.24
0.25
0.27
0.28
0.01
0.01
0.01
0.01
0.01
16.7
18.2
19.0
20.4
21.2
21.6
19.8
19.0
17.6
17.0
1N4713UR-1
1N4714UR-1
1N4715UR-1
1N4716UR-1
1N4717UR-1
30.0
33.0
36.0
39.0
43.0
50
50
50
50
50
0.30
0.33
0.36
0.39
0.43
0.01
0.01
0.01
0.01
0.01
22.8
25.0
27.3
29.6
32.6
15.8
14.4
13.2
12.2
11.0
*JEDEC registered data except IZM has been increased (doubled) for 500 mW power dissipation capabilities.
NOTES: 1. All types as shown are +/-5% tolerance. Also available in 2% and 1% tolerance.
2. ∆VZ @ 100 µA minus VZ @ 10 µA.
3. The electrical characteristics are measured after allowing the device to stabilize for 20 seconds when mounted with 3/8”
minimum lead length from the base.
T4-LDS-0240-1, Rev. 1 (112022) © 2011 Mic r osemi C or porati on Page 4 of 5
1N4678UR-1 t h ru 1N4 71 7 UR-1
GRAPHS
TEC – END CAP TEMPER ATURE (oC) or
TA on FR4 PC BOARD
FIGURE 1
POW ER DERATING CURVE
Z ENER VOLTAGE VZ
FIGURE 2
CAPACITANCE vs. ZENER VOLTAGE (TYPICAL)
PD RATED POWER DISSI PATION - mW
T YPICAL CAPACITANCE IN PICOFARADS (Pf)
At zero volts
At –2 volts (VR)
TEC
TA
T4-LDS-0240-1, Rev. 1 (112022) © 2011 Mic r osemi C or porati on Page 5 of 5
1N4678UR-1 t h ru 1N4 71 7 UR-1
PACKAGE DIM ENSIONS
PAD LAYOUT
DIM
INCH
MILLIMETERS
MIN
MAX
MIN
MAX
A
0.063
0.067
1.60
1.70
B
0.130
0.146
3.30
3.70
C
0.016
0.022
0.41
0.55
inch
mm
A
.200
5.08
B
.055
1.40
C
.080
2.03
