DATA SH EET
Product specification
Supersedes data of 1996 Apr 26 1999 May 25
DISCRETE SEMICONDUCTORS
BZX79 series
Voltage regulator diodes
M3D176
1999 May 25 2
Philips Semiconductors Product specification
Voltage regulator diodes BZX79 series
FEATURES
Total power dissipation:
max. 500 mW
Three tolerance series: ±1%, ±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-power voltage regulator diodes in hermetically sealed leaded glass
SOD27 (DO-35) packages. The diodes are available in the normalized E24
±1% (BZX79-A), ±2% (BZX79-B), and approx5% (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 134).
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.
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, 2, 3 and 4
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
1999 May 25 3
Philips Semiconductors Product specification
Voltage regulator diodes BZX79 series
ELECTRICAL CHARACTERISTICS
Total BZX79-A, B and C series
Tj=25°C unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MAX. UNIT
VFforward voltage IF= 10 mA; see Fig.4 0.9 V
IRreverse current
BZX79-A/B/C2V4 VR=1V 50 µA
BZX79-A/B/C2V7 VR=1V 20 µA
BZX79-A/B/C3V0 VR=1V 10 µA
BZX79-A/B/C3V3 VR=1V 5 µA
BZX79-A/B/C3V6 VR=1V 5 µA
BZX79-A/B/C3V9 VR=1V 3 µA
BZX79-A/B/C4V3 VR=1V 3 µA
BZX79-A/B/C4V7 VR=2V 3 µA
BZX79-A/B/C5V1 VR=2V 2 µA
BZX79-A/B/C5V6 VR=2V 1 µA
BZX79-A/B/C6V2 VR=4V 3 µA
BZX79-A/B/C6V8 VR=4V 2 µA
BZX79-A/B/C7V5 VR=5V 1 µA
BZX79-A/B/C8V2 VR= 5 V 700 nA
BZX79-A/B/C9V1 VR= 6 V 500 nA
BZX79-A/B/C10 VR= 7 V 200 nA
BZX79-A/B/C11 VR= 8 V 100 nA
BZX79-A/B/C12 VR= 8 V 100 nA
BZX79-A/B/C13 VR= 8 V 100 nA
BZX79-A/B/C15 to 75 VR= 0.7VZnom 50 nA
1999 May 25 4
Philips Semiconductors Product specification
Voltage regulator diodes BZX79 series
Table 1 Per type BZX79-A/B2V4 to A/B24
Tj=25°C unless otherwise specified.
BZX79-
A or B
XXX
WORKING VOLTAGE
VZ(V)
at IZtest =5mA
DIFFERENTIAL RESISTANCE
rdif ()TEMP. COEFF.
SZ(mV/K)
at IZtest =5mA
(see Figs 5 and 6)
DIODE CAP.
Cd(pF)
at f = 1 MHz;
VR=0V
NON-REPETITIVE PEAK
REVERSE CURRENT
IZSM (A)
at tp= 100 µs; Tamb =25°C
Tol. ±1% (A) Tol. ±2% (B) at IZtest = 1 mA at IZtest =5mA
MIN. MAX. MIN. MAX. TYP. MAX. TYP. MAX. MIN. TYP. MAX. MAX. MAX.
2V4 2.37 2.43 2.35 2.45 275 600 70 100 3.5 1.6 0 450 6.0
2V7 2.67 2.73 2.65 2.75 300 600 75 100 3.5 2.0 0 450 6.0
3V0 2.97 3.03 2.94 3.06 325 600 80 95 3.5 2.1 0 450 6.0
3V3 3.26 3.34 3.23 3.37 350 600 85 95 3.5 2.4 0 450 6.0
3V6 3.56 3.64 3.53 3.67 375 600 85 90 3.5 2.4 0 450 6.0
3V9 3.86 3.94 3.82 3.98 400 600 85 90 3.5 2.5 0 450 6.0
4V3 4.25 4.35 4.21 4.39 410 600 80 90 3.5 2.5 0 450 6.0
4V7 4.65 4.75 4.61 4.79 425 500 50 80 3.5 1.4 0.2 300 6.0
5V1 5.04 5.16 5.00 5.20 400 480 40 60 2.7 0.8 1.2 300 6.0
5V6 5.54 5.66 5.49 5.71 80 400 15 40 2.0 1.2 2.5 300 6.0
6V2 6.13 6.27 6.08 6.32 40 150 6 10 0.4 2.3 3.7 200 6.0
6V8 6.73 6.87 6.66 6.94 30 80 6 15 1.2 3.0 4.5 200 6.0
7V5 7.42 7.58 7.35 7.65 30 80 6 15 2.5 4.0 5.3 150 4.0
8V2 8.11 8.29 8.04 8.36 40 80 6 15 3.2 4.6 6.2 150 4.0
9V1 9.00 9.20 8.92 9.28 40 100 6 15 3.8 5.5 7.0 150 3.0
10 9.90 10.10 9.80 10.20 50 150 8 20 4.5 6.4 8.0 90 3.0
11 10.89 11.11 10.80 11.20 50 150 10 20 5.4 7.4 9.0 85 2.5
12 11.88 12.12 11.80 12.20 50 150 10 25 6.0 8.4 10.0 85 2.5
13 12.87 13.13 12.70 13.30 50 170 10 30 7.0 9.4 11.0 80 2.5
15 14.85 15.15 14.70 15.30 50 200 10 30 9.2 11.4 13.0 75 2.0
16 15.84 16.16 15.70 16.30 50 200 10 40 10.4 12.4 14.0 75 1.5
18 17.82 18.18 17.60 18.40 50 225 10 45 12.4 14.4 16.0 70 1.5
20 19.80 20.20 19.60 20.40 60 225 15 55 14.4 16.4 18.0 60 1.5
22 21.78 22.22 21.60 22.40 60 250 20 55 16.4 18.4 20.0 60 1.25
24 23.76 24.24 23.50 24.50 60 250 25 70 18.4 20.4 22.0 55 1.25
1999 May 25 5
Philips Semiconductors Product specification
Voltage regulator diodes BZX79 series
Table 2 Per type BZX79-A/B27 to A/B75
Tj=25°C unless otherwise specified.
BZX79-
A or B
XXX
WORKING VOLTAGE
VZ(V)
at IZtest =2mA
DIFFERENTIAL RESISTANCE
rdif ()TEMP. COEFF.
SZ(mV/K)
at IZtest =2mA
(see Figs 5 and 6)
DIODE CAP.
Cd(pF)
at f = 1 MHz;
VR=0V
NON-REPETITIVE PEAK
REVERSE CURRENT
IZSM (A)
at tp= 100 µs; Tamb =25°C
Tol. ±1% (A) Tol. ±2% (B) at IZtest = 0.5 mA at IZtest =2mA
MIN. MAX. MIN. MAX. TYP. MAX. TYP. MAX. MIN. TYP. MAX. MAX. MAX.
27 26.73 27.27 26.50 27.50 65 300 25 80 21.4 23.4 25.3 50 1.0
30 29.70 30.30 29.40 30.60 70 300 30 80 24.4 26.6 29.4 50 1.0
33 32.67 33.33 32.30 33.70 75 325 35 80 27.4 29.7 33.4 45 0.9
36 35.64 36.36 35.30 36.70 80 350 35 90 30.4 33.0 37.4 45 0.8
39 38.61 39.39 38.20 39.80 80 350 40 130 33.4 36.4 41.2 45 0.7
43 42.57 43.43 42.10 43.90 85 375 45 150 37.6 41.2 46.6 40 0.6
47 46.53 47.47 46.10 47.90 85 375 50 170 42.0 46.1 51.8 40 0.5
51 50.49 51.51 50.00 52.00 90 400 60 180 46.6 51.0 57.2 40 0.4
56 55.44 56.56 54.90 57.10 100 425 70 200 52.2 57.0 63.8 40 0.3
62 61.38 62.62 60.80 63.20 120 450 80 215 58.8 64.4 71.6 35 0.3
68 67.32 68.68 66.60 69.40 150 475 90 240 65.6 71.7 79.8 35 0.25
75 74.25 75.75 73.50 76.50 170 500 95 255 73.4 80.2 88.6 35 0.2
1999 May 25 6
Philips Semiconductors Product specification
Voltage regulator diodes BZX79 series
Table 3 Per type BZX79-C2V4 to C24
Tj=25°C unless otherwise specified.
BZX79
-C
XXX
WORKING VOLTAGE
VZ(V)
at IZtest =5mA
DIFFERENTIAL RESISTANCE
rdif ()TEMP. COEFF.
SZ(mV/K)
at IZtest =5mA
(see Figs 5 and 6)
DIODE CAP.
Cd(pF)
at f = 1 MHz;
VR=0V
NON-REPETITIVE PEAK
REVERSE CURRENT
IZSM (A)
at tp= 100 µs; Tamb =25°C
Tol. approx. ±5% (C) at IZtest = 1 mA at IZtest =5mA
MIN. MAX. TYP. MAX. TYP. MAX. MIN. TYP. MAX. MAX. MAX.
2V4 2.2 2.6 275 600 70 100 3.5 1.6 0 450 6.0
2V7 2.5 2.9 300 600 75 100 3.5 2.0 0 450 6.0
3V0 2.8 3.2 325 600 80 95 3.5 2.1 0 450 6.0
3V3 3.1 3.5 350 600 85 95 3.5 2.4 0 450 6.0
3V6 3.4 3.8 375 600 85 90 3.5 2.4 0 450 6.0
3V9 3.7 4.1 400 600 85 90 3.5 2.5 0 450 6.0
4V3 4.0 4.6 410 600 80 90 3.5 2.5 0 450 6.0
4V7 4.4 5.0 425 500 50 80 3.5 1.4 0.2 300 6.0
5V1 4.8 5.4 400 480 40 60 2.7 0.8 1.2 300 6.0
5V6 5.2 6.0 80 400 15 40 2.0 1.2 2.5 300 6.0
6V2 5.8 6.6 40 150 6 10 0.4 2.3 3.7 200 6.0
6V8 6.4 7.2 30 80 6 15 1.2 3.0 4.5 200 6.0
7V5 7.0 7.9 30 80 6 15 2.5 4.0 5.3 150 4.0
8V2 7.7 8.7 40 80 6 15 3.2 4.6 6.2 150 4.0
9V1 8.5 9.6 40 100 6 15 3.8 5.5 7.0 150 3.0
10 9.4 10.6 50 150 8 20 4.5 6.4 8.0 90 3.0
11 10.4 11.6 50 150 10 20 5.4 7.4 9.0 85 2.5
12 11.4 12.7 50 150 10 25 6.0 8.4 10.0 85 2.5
13 12.4 14.1 50 170 10 30 7.0 9.4 11.0 80 2.5
15 13.8 15.6 50 200 10 30 9.2 11.4 13.0 75 2.0
16 15.3 17.1 50 200 10 40 10.4 12.4 14.0 75 1.5
18 16.8 19.1 50 225 10 45 12.4 14.4 16.0 70 1.5
20 18.8 21.2 60 225 15 55 14.4 16.4 18.0 60 1.5
22 20.8 23.3 60 250 20 55 16.4 18.4 20.0 60 1.25
24 22.8 25.6 60 250 25 70 18.4 20.4 22.0 55 1.25
1999 May 25 7
Philips Semiconductors Product specification
Voltage regulator diodes BZX79 series
Table 4 Per type BZX79-C27 to C75
Tj=25°C unless otherwise specified.
BZX79
-C
XXX
WORKING
VOLTAGE
VZ(V)
at IZtest =2mA
DIFFERENTIAL RESISTANCE
rdif ()TEMP. COEFF.
SZ(mV/K)
at IZtest =2mA
(see Figs 5 and 6)
DIODE CAP.
Cd(pF)
at f = 1 MHz;
VR=0V
NON-REPETITIVE PEAK
REVERSE CURRENT
IZSM (A)
at tp= 100 µs; Tamb =25°C
Tol.approx. ±5% (C) at IZtest = 0.5 mA at IZtest =2mA
MIN. MAX. TYP. MAX. TYP. MAX. MIN. TYP. MAX. MAX. MAX.
27 25.1 28.9 65 300 25 80 21.4 23.4 25.3 50 1.0
30 28.0 32.0 70 300 30 80 24.4 26.6 29.4 50 1.0
33 31.0 35.0 75 325 35 80 27.4 29.7 33.4 45 0.9
36 34.0 38.0 80 350 35 90 30.4 33.0 37.4 45 0.8
39 37.0 41.0 80 350 40 130 33.4 36.4 41.2 45 0.7
43 40.0 46.0 85 375 45 150 37.6 41.2 46.6 40 0.6
47 44.0 50.0 85 375 50 170 42.0 46.1 51.8 40 0.5
51 48.0 54.0 90 400 60 180 46.6 51.0 57.2 40 0.4
56 52.0 60.0 100 425 70 200 52.2 57.0 63.8 40 0.3
62 58.0 66.0 120 450 80 215 58.8 64.4 71.6 35 0.3
68 64.0 72.0 150 475 90 240 65.6 71.7 79.8 35 0.25
75 70.0 79.0 170 500 95 255 73.4 80.2 88.6 35 0.2
1999 May 25 8
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.
1999 May 25 9
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 Forward current as a function of forward
voltage; typical values.
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-A/B/C2V4 to A/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-A/B/C4V7 to A/B/C12.
Tj=25to150°C.
1999 May 25 10
Philips Semiconductors Product specification
Voltage regulator diodes BZX79 series
PACKAGE OUTLINE
DEFINITIONS
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 customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
Data sheet status
Objective specification This data sheet contains target or goal specifications for product development.
Preliminary specification This data sheet contains preliminary data; supplementary data may be published later.
Product specification This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). 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 at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
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
1999 May 25 11
Philips Semiconductors Product specification
Voltage regulator diodes BZX79 series
NOTES
© Philips Electronics N.V. SCA
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
Internet: http://www.semiconductors.philips.com
1999 65
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Printed in The Netherlands 115002/02/pp12 Date of release: 1999 May 25 Document order number: 9397 750 05894