1. Product profile
1.1 General description
Low voltage regulator diodes in hermetically sealed small SOD66 (DO-41) glass
packages.
The series consists of 22 types with nominal working voltages from 3.3 to 24 V.
1.2 Features
1.3 Applications
nLow voltage stabilizers
1.4 Quick reference data
2. Pinning information
[1] The marking band indicates the cathode.
1N4728A to 1N4749A
Voltage regulator diodes
Rev. 02 — 30 October 2009 Product data sheet
nTotal power dissipation:
max. ≤1000 mW
nTolerance series: ±5%
nWorking voltage range:
nom. 3.3 V to 24 V
nSmall hermetically sealed glass
package
Table 1. Quick reference data
Symbol Parameter Conditions Min Typ Max Unit
VFforward voltage IF= 200 mA - - 1.2 V
Ptot total power dissipation - - 1000 mW
Table 2. Pinning
Pin Description Simplified outline Graphic symbol
1 cathode [1]
2 anode ak
006aaa152
2
1
1N4728A_SER © Nexperia B.V. 2009. All rights reserved.
Product data sheet Rev. 02 — 30 October 2009 2 of 10
Nexperia 1N4728A to 1N4749A
Voltage regulator diodes
3. Ordering information
[1] The series consists of 22 types with nominal working voltages from 3.3 V to 24 V.
4. Marking
5. Limiting values
Table 3. Ordering information
Type number Package
Name Description Version
1N4728A to
1N4749A[1] - hermetically sealed glass package; axial leaded;
2 leads SOD66
Table 4. Marking codes
Type number Marking code
1N4728A to 1N4749A The diodes are type branded.
Table 5. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol Parameter Conditions Min Max Unit
IFforward current - 500 mA
IZworking current - see
Table 8
IZSM non-repetitive peak reverse
current - see
Table 8
Ptot total power dissipation Tamb =50°C - 1000 mW
Tjjunction temperature −65 +200 °C
Tstg storage temperature −65 +200 °C
1N4728A_SER © Nexperia B.V. 2009. All rights reserved.
Product data sheet Rev. 02 — 30 October 2009 3 of 10
Nexperia 1N4728A to 1N4749A
Voltage regulator diodes
6. Thermal characteristics
7. Characteristics
Table 6. Thermal characteristics
Symbol Parameter Conditions Min Typ Max Unit
Rth(j-t) thermal resistance from
junction to tie-point lead length 4 mm - - 110 K/W
Fig 1. Thermal resistance from junction to tie-point as a function of pulse duration;
lead length 4 mm
006aab843
10−111010
2103104105
1
10
102
103
Rth(j-t)
(K/W)
tp (ms)
0.02
0.01
0
δ = 1
0.75
0.50
0.33
0.20
0.10
0.05
Table 7. Characteristics
T
j
=25
°
C unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
VFforward voltage IF= 200 mA - - 1.2 V
1N4728A_SER © Nexperia B.V. 2009. All rights reserved.
Product data sheet Rev. 02 — 30 October 2009 4 of 10
Nexperia 1N4728A to 1N4749A
Voltage regulator diodes
[1] VZ is measured with device at thermal equilibrium while held in clips at 10 mm from body in still air at 25 °C.
[2] Half square wave or equivalent sine wave pulse 1/120 second duration superimposed on Itest.
Table 8. Characteristics per type
T
j
=25
°
C unless otherwise specified.
Type
number Working
voltage
VZ(V)[1]
Test
current
Itest
(mA)
Differential
resistance
rdif (Ω)
Reverse current
IR(µA) Working
current
IZ(mA)
Non-repetitive
peak reverse
current
IZSM (mA)[2]
at Itest at Itest at IZ IZ(mA)
Nom Max Max Max VR(V) Max Max
1N4728A 3.3 76 10 400 1 100 1 276 1380
1N4729A 3.6 69 10 400 1 100 1 252 1260
1N4730A 3.9 64 9 400 1 50 1 234 1190
1N4731A 4.3 58 9 400 1 10 1 217 1070
1N4732A 4.7 53 8 500 1 10 1 193 970
1N4733A 5.1 49 7 550 1 10 1 178 890
1N4734A 5.6 45 5 600 1 10 2 162 810
1N4735A 6.2 41 2 700 1 10 3 146 730
1N4736A 6.8 37 3.5 700 1 10 4 133 660
1N4737A 7.5 34 4 700 0.5 10 5 121 605
1N4738A 8.2 31 4.5 700 0.5 10 6 110 550
1N4739A 9.1 28 5 700 0.5 10 7 100 500
1N4740A 10 25 7 700 0.25 10 7.6 91 454
1N4741A 11 23 8 700 0.25 5 8.4 83 414
1N4742A 12 21 9 700 0.25 5 9.1 76 380
1N4743A 13 19 10 700 0.25 5 9.9 69 344
1N4744A 15 17 14 700 0.25 5 11.4 61 304
1N4745A 16 15.5 16 700 0.25 5 12.2 57 285
1N4746A 18 14 20 750 0.25 5 13.7 50 250
1N4747A 20 12.5 22 750 0.25 5 15.2 45 225
1N4748A 22 11.5 23 750 0.25 5 16.7 41 205
1N4749A 24 10.5 25 750 0.25 5 18.2 38 190
1N4728A_SER © Nexperia B.V. 2009. All rights reserved.
Product data sheet Rev. 02 — 30 October 2009 5 of 10
Nexperia 1N4728A to 1N4749A
Voltage regulator diodes
(1) Tj= 200 °C
(2) Tj=25°C
Fig 2. Forward current as a function of forward voltage; typical values
mbg925
0 1.0
300
0
100
200
0.5 VF (V)
IF
(mA)
(1) (2)
1N4728A_SER © Nexperia B.V. 2009. All rights reserved.
Product data sheet Rev. 02 — 30 October 2009 6 of 10
Nexperia 1N4728A to 1N4749A
Voltage regulator diodes
8. Package outline
Fig 3. Package outline SOD66 (DO-41)
References
Outline
version European
projection Issue date
IEC JEDEC JEITA
SOD66 DO-41
sod066_po
97-06-20
09-10-09
Unit
mm max
nom
min
0.81 2.6
25.4
b
Dimensions
Note
1. The marking band indicates the cathode.
Hermetically sealed glass package; axial leaded; 2 leads SOD66
DG
1
4.8
L
0 2 4 mm
scale
G1
L L
b
(1)
ka
D
1N4728A_SER © Nexperia B.V. 2009. All rights reserved.
Product data sheet Rev. 02 — 30 October 2009 8 of 10
Nexperia 1N4728A to 1N4749A
Voltage regulator diodes
10. Revision history
Table 10. Revision history
Document ID Release date Data sheet status Change notice Supersedes
1N4728A_SER_2 20091030 Product data sheet - 1N4728A_1
Modifications: •The format of this data sheet has been redesigned to comply with the new identity
guidelines of NXP Semiconductors.
•Legal texts have been adapted to the new company name where appropriate.
•Table 5 “Limiting values”: IZM redefined to IZ working current
•Table 6: Rth(j-tp) redefined to Rth(j-t) thermal resistance from junction to tie-point
•Figure 1: Rth(j-tp) redefined to Rth(j-t) thermal resistance from junction to tie-point
•Table 8 “Characteristics per type”: IZtest redefined to Itest test current
•Figure 3 “Package outline SOD66 (DO-41)”: updated
1N4728A_1 19960426 Product data sheet - -
1N4728A_SER © Nexperia B.V. 2009. All rights reserved.
Product data sheet Rev. 02 — 30 October 2009 9 of 10
Nexperia 1N4728A to 1N4749A
Voltage regulator diodes
11. Legal information
11.1 Data sheet status
[1] Please consult the most recently issued document before initiating or completing a design.
[2] The term ‘short data sheet’ is explained in section “Definitions”.
[3] The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status
information is available on the Internet at URL http://www.nexperia.com.
damage. Nexperia accepts no liability for inclusion and/or use of Nexperia
products in such equipment or applications and therefore such inclusion and/
or use is at the customer’s own risk.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. Nexperia makes no representation
or warranty that such applications will be suitable for the specified use
without further testing or modification.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) may cause permanent
damage to the device. Limiting values are stress ratings only and operation of
the device at these or any other conditions above those given in the
Characteristics sections of this document is not implied. Exposure to limiting
values for extended periods may affect device reliability.
Terms and conditions of sale — Nexperia products are sold subject to the
general terms and conditions of commercial sale, as published at http://
www.nexperia.com/profile/terms, including those pertaining to warranty,
intellectual property rights infringement and limitation of liability, unless
explicitly otherwise agreed to in writing by Nexperia. In case of any
inconsistency or conflict between information in this document and such
terms and conditions, the latter will prevail.
No offer to sell or license — Nothing in this document may be interpreted
or construed as an offer to sell products that is open for acceptance or the
grant, conveyance or implication of any license under any copyrights, patents
or other industrial or intellectual property rights.
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
authorization from national authorities.
Quick reference data — The Quick reference data is an extract of the
product data given in the Limiting values and Characteristics sections of this
document, and as such is not complete, exhaustive or legally binding.
11.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
11.2 Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. Nexperia does not give any representations or
warranties as to the accuracy or completeness of information included herein
and shall have no liability for the consequences of use of such information.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is
intended for quick reference only and should not be relied upon to contain
detailed and full information. For detailed and full information see the
relevant full data sheet, which is available on request via the local Nexperia
sales office. In case of any inconsistency or conflict with the short data sheet,
the full data sheet shall prevail.
11.3 Disclaimers
General — Information in this document is believed to be accurate and
reliable. However, Nexperia does not give any representations or warranties,
expressed or implied, as to the accuracy or completeness of such information
and shall have no liability for the consequences of use of such information.
Right to make changes — Nexperia reserves the right to make changes to
information published in this document, including without limitation
specifications and product descriptions, at any time and without notice. This
document supersedes and replaces all information supplied prior to the
publication hereof.
Suitability for use — Nexperia products are not designed, authorized or
warranted to be suitable for use in medical, military, aircraft, space or life
support equipment, nor in applications where failure or malfunction of an
Nexperia product can reasonably be expected to result in personal injury,
death or severe property or environmental
Document status[1][2] Product status[3] Definition
Objective [short] data sheet Development This document contains data from the objective specification for product development.
Preliminary [short] data sheet Qualification This document contains data from the preliminary specification.
Product [short] data sheet Production This document contains the product specification.
Nexperia 1N4728A to 1N4749A
Voltage regulator diodes
© Nexperia B.V. 2009. All rights reserved.
For more information, please visit: http://www.Nexperia.com
For sales office addresses, please send an email to:
salesaddresses@nexperia.com Date of release: 30 October 2009
Document identifier: 1N4728A_SER
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
12.Contents
1 Product profile . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 General description. . . . . . . . . . . . . . . . . . . . . . 1
1.2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.4 Quick reference data. . . . . . . . . . . . . . . . . . . . . 1
2 Pinning information. . . . . . . . . . . . . . . . . . . . . . 1
3 Ordering information. . . . . . . . . . . . . . . . . . . . . 2
4 Marking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
5 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 2
6 Thermal characteristics. . . . . . . . . . . . . . . . . . . 3
7 Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . 3
8 Package outline . . . . . . . . . . . . . . . . . . . . . . . . . 6
9 Packing information. . . . . . . . . . . . . . . . . . . . . . 7
10 Revision history. . . . . . . . . . . . . . . . . . . . . . . . . 8
11 Legal information. . . . . . . . . . . . . . . . . . . . . . . . 9
11.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . . 9
11.2 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
11.3 Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
11.4 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
12Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
