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Please note: As part of the Fairchild Semiconductor integration, some of the Fairchild orderable part numbers
will need to change in order to meet ON Semiconductor’s system requirements. Since the ON Semiconductor
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(_), the underscore (_) in the Fairchild part numbers will be changed to a dash (-). This document may contain
device numbers with an underscore (_). Please check the ON Semiconductor website to verify the updated
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Is Now Part of
ON Semiconductor and the ON Semiconductor logo are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor owns the rights to a number
of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. ON Semiconductor reserves the right
to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Buyer is responsible for its products and applications using ON
Semiconductor products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON
Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s
technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA
Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended
or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out
of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor
is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
©2000 Fairchild Semiconductor International Rev. A, February 2000
BD175/177/179
NPN Epitaxial Silicon Transistor
Absolute Maximum Ratings TC=25°C unless otherwise noted
Electrical Characteristics TC=25°C unless otherwise noted
* Pulse Test: PW=300µs, duty Cycle=1.5% Pulsed
hFE Classificntion
* Classification 16: Only BD175
Symbol Parameter Value Units
VCBO *Collector-Base Voltage : BD175
: BD177
: BD179
45
60
80
V
V
V
VCEO Collector-Emitter Voltage : BD175
: BD177
: BD179
45
60
80
V
V
V
VEBO Emitter-Base Voltage 5 V
IC Collector Current (DC) 3 A
ICP *Collector Current (Pulse) 7 A
PC Collector Dissipation (TC=25°C) 30 W
TJ Junction Temperature 150 °C
TSTG Storage Tem perature - 65 ~ 150 °C
Symbol Parameter Test Co n dition Min. Typ. Max. Units
VCEO(sus) * Collector-Emit ter Susta ining Voltage
: BD175
: BD177
: BD179
IC = 100mA, IB = 0 45
60
80
V
V
V
ICBO Collector Cut-off Current : BD175
: BD177
: BD179
VCB = 45V, IE = 0
VCB = 60V, IE = 0
VCB = 80V, IE = 0
100
100
100
µA
µA
µA
IEBO Emitter Cut -of f Curr ent VEB = 5V, IC = 0 1 mA
hFE1
hFE2
* DC Current G ain VCE = 2V, IC = 150mA
VCE = 2V, IC = 1A 40
15 250
VCE(sat) * Collect or-Emitter Satu rat ion Voltage IC = 1A, IB = 0.1A 0.8 V
VBE(on) * Base-Emitter On Voltage VCE = 2V, IC = 1A 1.3 V
fT Current Gain Bandwidth Product VCE = 10V, IC = 250mA 3 MHz
Classification 6 10 16
hFE1 40 ~ 100 63 ~ 160 100 ~ 250
BD175/177/179
Medium Power Linear and Switching
Applications
• Complement to BD 176/178/180 respectively
1TO-126
1. Emitter 2.Collector 3.Base
©2000 Fairchild Semiconductor International
BD175/177/179
Rev. A, February 2000
Typical Characteristics
Figure 1. DC current Gain Figure 2. Base-Emitter Saturation Voltage
Collector-Emitter Saturation Voltage
Figure 3. Safe Operating Area Figure 4. Power Derating
0.01 0.1 1 10
1
10
100
1000 VCE = 2V
hFE, DC CURRENT GAIN
IC[A], COLLECTOR CURRENT
0.1 1 10
0.01
0.1
1
10
VCE(sat)
VBE(sat)
IC = 10 IB
VBE(sat), VCE(sat)[V], SATURATION VOLTAGE
IC[A], COLLECTOR CURRENT
1 10 100
0.1
1
10
IC MAX. (Continuous)
BD179
BD177
BD175
10µs
100
µ
s
1ms
DC
IC MAX. (Pulsed)
IC[A], COL LECTOR CURRENT
VCE[V], COLLECTOR-EMITT ER VOLTAGE
0 25 50 75 100 125 150 175
0
5
10
15
20
25
30
35
40
PC[W], POWER DISSIPATION
TC[oC], CASE TEMPERATURE
Package Demensions
©2000 Fairchild Semiconductor International Rev. A, February 2000
BD175/177/179
Dimensions in Millimeters
3.25 ±0.20
8.00 ±0.30
ø3.20 ±0.10
0.75 ±0.10
#1
0.75 ±0.10
2.28TYP
[2.28±0.20] 2.28TYP
[2.28±0.20]
1.60 ±0.10
11.00 ±0.20
3.90 ±0.10
14.20MAX
16.10 ±0.20
13.06 ±0.30
1.75 ±0.20
(0.50)
(1.00)
0.50 +0.10
–0.05
TO-126
©2000 Fairchild Semiconductor International Rev. E
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ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.
ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent
coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein.
ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards,
regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer
application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not
designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification
in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized
application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and
expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such
claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This
literature is subject to all applicable copyright laws and is not for resale in any manner.
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