DATA SH EET
Product specification
Supersedes data of 1999 May 25 2002 Feb 27
DISCRETE SEMICONDUCTORS
BZX79 series
Voltage regulator diodes
M3D176
2002 Feb 27 2
Philips Semiconductors Product specification
Voltage regulator diodes BZX79 series
FEATURES
Total power dissipation: max. 500 mW
Two tolerance series: ±2%, and approx. ±5%
Working voltage range: nom. 2.4 to 75 V (E24 range)
Non-repetitive peak reverse power dissipation:
max. 40 W.
APPLICATIONS
Low voltage stabilizers or voltage references.
DESCRIPTION
Low-powervoltageregulatordiodesinhermeticallysealed
leaded glass SOD27 (DO-35) packages. The diodes are
available in the normalized E24 ±2% (BZX79-B) and
approx. ±5% (BZX79-C) tolerance range. The series
consists of 37 types with nominal working voltages from
2.4 to 75 V.
Fig.1 Simplified outline (SOD27; DO-35) and
symbol.
The diodes are type branded.
handbook, halfpage
MAM239
ka
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134).
Notes
1. Device mounted on a printed circuit-board without metallization pad; lead length max.
2. Tie-point temperature 50 °C; max. lead length 8 mm.
ELECTRICAL CHARACTERISTICS
Total BZX79-B and BZX79-C series
Tj=25°C unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
IFcontinuous forward current 250 mA
IZSM non-repetitive peak reverse current tp= 100 µs; square wave;
Tj=25°C prior to surge see Tables 1 and 2 A
Ptot total power dissipation Tamb =50°C; note 1 400 mW
Tamb =50°C; note 2 500 mW
PZSM non-repetitive peak reverse power
dissipation tp= 100 µs; square wave;
Tj=25°C prior to surge; see Fig.3 40 W
Tstg storage temperature 65 +200 °C
Tjjunction temperature 65 +200 °C
SYMBOL PARAMETER CONDITIONS MAX. UNIT
VFforward voltage IF= 10 mA; see Fig.4 0.9 V
2002 Feb 27 3
Philips Semiconductors Product specification
Voltage regulator diodes BZX79 series
IRreverse current
BZX79-B/C2V4 VR=1V 50 µA
BZX79-B/C2V7 VR=1V 20 µA
BZX79-B/C3V0 VR=1V 10 µA
BZX79-B/C3V3 VR=1V 5 µA
BZX79-B/C3V6 VR=1V 5 µA
BZX79-B/C3V9 VR=1V 3 µA
BZX79-B/C4V3 VR=1V 3 µA
BZX79-B/C4V7 VR=2V 3 µA
BZX79-B/C5V1 VR=2V 2 µA
BZX79-B/C5V6 VR=2V 1 µA
BZX79-B/C6V2 VR=4V 3 µA
BZX79-B/C6V8 VR=4V 2 µA
BZX79-B/C7V5 VR=5V 1 µA
BZX79-B/C8V2 VR= 5 V 700 nA
BZX79-B/C9V1 VR= 6 V 500 nA
BZX79-B/C10 VR= 7 V 200 nA
BZX79-B/C11 VR= 8 V 100 nA
BZX79-B/C12 VR= 8 V 100 nA
BZX79-B/C13 VR= 8 V 100 nA
BZX79-B/C15 to BZX79-B/C75 VR= 0.7VZnom 50 nA
SYMBOL PARAMETER CONDITIONS MAX. UNIT
2002 Feb 27 4
Philips Semiconductors Product specification
Voltage regulator diodes BZX79 series
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Table 1 Per type, BZX79-B/C2V4 to BZX79-B/C24
Tj=25°C unless otherwise specified.
BZX79-
Bxxx
Cxxx
WORKING VOLTAGE
VZ(V)
at IZtest =5mA
DIFFERENTIAL RESISTANCE
rdif ()TEMP. COEFF.
SZ(mV/K)
at IZtest =5mA
(see Figs 5 and 6)
DIODECAP.
Cd(pF)
at f = 1 MHz;
VR=0V
NON-REPETITIVE PEAK
REVERSE CURRENT
IZSM (A)
at tp= 100 µs; Tamb =25°C
Tol. ±2% (B) Tol. approx.
±5% (C) at IZtest = 1 mA at IZtest =5mA
MIN. MAX. MIN. MAX. TYP. MAX. TYP. MAX. MIN. TYP. MAX. MAX. MAX.
2V4 2.35 2.45 2.2 2.6 275 600 70 100 3.5 1.6 0 450 6.0
2V7 2.65 2.75 2.5 2.9 300 600 75 100 3.5 2.0 0 450 6.0
3V0 2.94 3.06 2.8 3.2 325 600 80 95 3.5 2.1 0 450 6.0
3V3 3.23 3.37 3.1 3.5 350 600 85 95 3.5 2.4 0 450 6.0
3V6 3.53 3.67 3.4 3.8 375 600 85 90 3.5 2.4 0 450 6.0
3V9 3.82 3.98 3.7 4.1 400 600 85 90 3.5 2.5 0 450 6.0
4V3 4.21 4.39 4.0 4.6 410 600 80 90 3.5 2.5 0 450 6.0
4V7 4.61 4.79 4.4 5.0 425 500 50 80 3.5 1.4 0.2 300 6.0
5V1 5.00 5.20 4.8 5.4 400 480 40 60 2.7 0.8 1.2 300 6.0
5V6 5.49 5.71 5.2 6.0 80 400 15 40 2.0 1.2 2.5 300 6.0
6V2 6.08 6.32 5.8 6.6 40 150 6 10 0.4 2.3 3.7 200 6.0
6V8 6.66 6.94 6.4 7.2 30 80 6 15 1.2 3.0 4.5 200 6.0
7V5 7.35 7.65 7.0 7.9 30 80 6 15 2.5 4.0 5.3 150 4.0
8V2 8.04 8.36 7.7 8.7 40 80 6 15 3.2 4.6 6.2 150 4.0
9V1 8.92 9.28 8.5 9.6 40 100 6 15 3.8 5.5 7.0 150 3.0
10 9.80 10.20 9.4 10.6 50 150 8 20 4.5 6.4 8.0 90 3.0
11 10.80 11.20 10.4 11.6 50 150 10 20 5.4 7.4 9.0 85 2.5
12 11.80 12.20 11.4 12.7 50 150 10 25 6.0 8.4 10.0 85 2.5
13 12.70 13.30 12.4 14.1 50 170 10 30 7.0 9.4 11.0 80 2.5
15 14.70 15.30 13.8 15.6 50 200 10 30 9.2 11.4 13.0 75 2.0
16 15.70 16.30 15.3 17.1 50 200 10 40 10.4 12.4 14.0 75 1.5
18 17.60 18.40 16.8 19.1 50 225 10 45 12.4 14.4 16.0 70 1.5
20 19.60 20.40 18.8 21.2 60 225 15 55 12.3 15.6 18.0 60 1.5
22 21.60 22.40 20.8 23.3 60 250 20 55 14.1 17.6 20.0 60 1.25
24 23.50 24.50 22.8 25.6 60 250 25 70 15.9 19.6 22.0 55 1.25
2002 Feb 27 5
Philips Semiconductors Product specification
Voltage regulator diodes BZX79 series
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Table 2 Per type, BZX79-B/C27 to BZX79-B/C75
Tj=25°C unless otherwise specified.
BZX79-
Bxxx
Cxxx
WORKING VOLTAGE
VZ(V)
at IZtest =2mA
DIFFERENTIAL RESISTANCE
rdif ()TEMP. COEFF.
SZ(mV/K)
at IZtest =2mA
(see Figs 5 and 6)
DIODECAP.
Cd(pF)
at f = 1 MHz;
VR=0V
NON-REPETITIVE PEAK
REVERSE CURRENT
IZSM (A)
at tp= 100 µs; Tamb =25°C
Tol. ±2% (B) Tol. approx.
±5% (C) at IZtest = 0.5 mA at IZtest =2mA
MIN. MAX. MIN. MAX. TYP. MAX. TYP. MAX. MIN. TYP. MAX. MAX. MAX.
27 26.50 27.50 25.1 28.9 65 300 25 80 18.0 22.7 25.3 50 1.0
30 29.40 30.60 28.0 32.0 70 300 30 80 20.6 25.7 29.4 50 1.0
33 32.30 33.70 31.0 35.0 75 325 35 80 23.3 28.7 33.4 45 0.9
36 35.30 36.70 34.0 38.0 80 350 35 90 26.0 31.8 37.4 45 0.8
39 38.20 39.80 37.0 41.0 80 350 40 130 28.7 34.8 41.2 45 0.7
43 42.10 43.90 40.0 46.0 85 375 45 150 31.4 38.8 46.6 40 0.6
47 46.10 47.90 44.0 50.0 85 375 50 170 35.0 42.9 51.8 40 0.5
51 50.00 52.00 48.0 54.0 90 400 60 180 38.6 46.9 57.2 40 0.4
56 54.90 57.10 52.0 60.0 100 425 70 200 42.2 52.0 63.8 40 0.3
62 60.80 63.20 58.0 66.0 120 450 80 215 58.8 64.4 71.6 35 0.3
68 66.60 69.40 64.0 72.0 150 475 90 240 65.6 71.7 79.8 35 0.25
75 73.50 76.50 70.0 79.0 170 500 95 255 73.4 80.2 88.6 35 0.2
2002 Feb 27 6
Philips Semiconductors Product specification
Voltage regulator diodes BZX79 series
THERMAL CHARACTERISTICS
Note
1. Device mounted on a printed circuit-board without metallization pad.
SYMBOL PARAMETER CONDITIONS VALUE UNIT
Rth j-tp thermal resistance from junction to tie-point lead length 8 mm. 300 K/W
Rth j-a thermal resistance from junction to ambient lead length max.; see Fig.2 and note 1 380 K/W
GRAPHICAL DATA
handbook, full pagewidth
10111010
2103104105
MBG930
102
10
1
103
tp (ms)
tptp
TT
δ =
0.02
0.01
0.001
0.75
0.50
0.33
0.20
0.10
0.05
δ = 1
Rth j-a
(K/W)
Fig.2 Thermal resistance from junction to ambient as a function of pulse duration.
2002 Feb 27 7
Philips Semiconductors Product specification
Voltage regulator diodes BZX79 series
Fig.3 Maximum permissible non-repetitive peak
reverse power dissipation versus duration.
handbook, halfpage
MBG801
103
1 duration (ms)
PZSM
(W)
10
102
101
10
1
(1)
(2)
(1) Tj=25°C (prior to surge).
(2) Tj= 150 °C (prior to surge).
Fig.4 Typical forward current as a function of
forward voltage.
handbook, halfpage
0.6 1.0
300
100
0
200
MBG781
0.8 VF (V)
IF
(mA)
Tj=25°C.
Fig.5 Temperature coefficient as a function of
working current; typical values.
handbook, halfpage
060
0
2
3
1
MBG783
20 40 IZ (mA)
SZ
(mV/K) 4V3
3V9
3V6
3V0
2V4
2V7
3V3
BZX79-B/C2V4 to BZX79-B/C4V3.
Tj=25to150°C.
Fig.6 Temperature coefficient as a function of
working current; typical values.
handbook, halfpage
02016
10
0
5
5
MBG782
4812 I
Z
(mA)
SZ
(mV/K)
4V7
12
11
10
9V1
8V2
7V5
6V8 6V2
5V6
5V1
BZX79-B/C4V7 to BZX79-B/C12.
Tj=25to150°C.
2002 Feb 27 8
Philips Semiconductors Product specification
Voltage regulator diodes BZX79 series
PACKAGE OUTLINE
REFERENCES
OUTLINE
VERSION EUROPEAN
PROJECTION ISSUE DATE
IEC JEDEC EIAJ
Note
1. The marking band indicates the cathode.
SOD27 DO-35A24 SC-40 97-06-09
Hermetically sealed glass package; axial leaded; 2 leads SOD27
UNIT b
max.
mm 0.56
D
max. G1
max.
25.44.251.85
L
min.
DIMENSIONS (mm are the original dimensions)
G1
LD L
b
(1)
0 1 2 mm
scale
2002 Feb 27 9
Philips Semiconductors Product specification
Voltage regulator diodes BZX79 series
DATA SHEET STATUS
Notes
1. Please consult the most recently issued data sheet before initiating or completing a design.
2. The product status of the device(s) described in this data sheet may have changed since this data sheet was
published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com.
DATA SHEET STATUS(1) PRODUCT
STATUS(2) DEFINITIONS
Objective data Development This data sheet contains data from the objective specification for product
development. Philips Semiconductors reserves the right to change the
specification in any manner without notice.
Preliminary data Qualification This data sheet contains data from the preliminary specification.
Supplementary data will be published at a later date. Philips
Semiconductors reserves the right to change the specification without
notice, in order to improve the design and supply the best possible
product.
Product data Production This data sheet contains data from the product specification. Philips
Semiconductors reserves the right to make changes at any time in order
to improve the design, manufacturing and supply. Changes will be
communicated according to the Customer Product/Process Change
Notification (CPCN) procedure SNW-SQ-650A.
DEFINITIONS
Short-form specification The data in a short-form
specification is extracted from a full data sheet with the
same type number and title. For detailed information see
the relevant data sheet or data handbook.
Limiting values definition Limiting values given are in
accordance with the Absolute Maximum Rating System
(IEC 60134). Stress above one or more of the limiting
values may cause permanent damage to the device.
These are stress ratings only and operation of the device
attheseoratanyother conditionsabovethose given inthe
Characteristics sections of the specification is not implied.
Exposure to limiting values for extended periods may
affect device reliability.
Application information Applications that are
described herein for any of these products are for
illustrative purposes only. Philips Semiconductors make
norepresentationor warrantythat suchapplicationswillbe
suitable for the specified use without further testing or
modification.
DISCLAIMERS
Life support applications These products are not
designed for use in life support appliances, devices, or
systems where malfunction of these products can
reasonably be expected to result in personal injury. Philips
Semiconductorscustomersusing orsellingtheseproducts
for use in such applications do so at their own risk and
agree to fully indemnify Philips Semiconductors for any
damages resulting from such application.
Right to make changes Philips Semiconductors
reserves the right to make changes, without notice, in the
products, including circuits, standard cells, and/or
software, described or contained herein in order to
improve design and/or performance. Philips
Semiconductors assumes no responsibility or liability for
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under any patent, copyright, or mask work right to these
products,and makes no representationsorwarrantiesthat
these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified.
2002 Feb 27 10
Philips Semiconductors Product specification
Voltage regulator diodes BZX79 series
NOTES
2002 Feb 27 11
Philips Semiconductors Product specification
Voltage regulator diodes BZX79 series
NOTES
© Koninklijke Philips Electronics N.V. 2002 SCA74
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Printed in The Netherlands 613514/03/pp12 Date of release: 2002 Feb 27 Document order number: 9397 750 09387