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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
BD675A/677A/679A/681
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
Symbol Parameter Value Units
VCBO Collector-Base Volt age : BD675A
: BD677A
: BD679A
: BD681
45
60
80
100
V
V
V
V
VCEO Collector-Emitter Voltage : BD675A
: BD677A
: BD679A
: BD681
45
60
80
100
V
V
V
V
VEBO Emitter-Base Voltage 5 V
IC Collector Current (DC) 4 A
ICP *Collector Current (Pulse) 6 A
IB Base Current 100 mA
PC Collector Dissipation (TC=25°C) 40 W
TJ Junction Temperature 150 °C
TSTG Storage Temperature - 65 ~ 150 °C
Symbol Parameter Test Condition Min. Typ. Max. Units
VCEO(sus) *Collector-Emitter Sustaining Voltage
: BD675A
: BD677A
: BD679A
: BD681
IC = 50mA , IB = 0 45
60
80
100
V
V
V
V
ICBO Collector- Base Voltage : BD675A
: BD677A
: BD679A
: BD681
VCB = 45V, IE = 0
VCB = 60V, IE = 0
VCB = 80V, IE = 0
VCB = 100V, VBE = 0
200
200
200
200
µA
µA
µA
µA
ICEO Collector Cut-off Current : BD675A
: BD677A
: BD679A
: BD681
VCE = 45V, VBE = 0
VCE = 60V, VBE = 0
VCE = 80V, VBE = 0
VCE = 100V, VBE = 0
500
500
500
500
µA
µA
µA
µA
IEBO Emitter Cut-off Current VEB = 5V, IC = 0 2 mA
hFE * DC Current Gain : BD675A/677A/679A
: BD68 1 VCE = 3V, IC = 2A
VCE = 3V, IC = 1.5A 750
750
VCE(sat) * Collector-Emitter Saturation Voltage
: BD675A/677A/679A
: BD68 1 IC = 2A, IB = 40mA
IC = 1.5A, IB = 30mA 2.8
2.5 V
V
VBE(on) * Base-Emitter ON Voltage : BD675A/677A/679A
: BD68 1 VCE = 3V, IC = 2A
VCE = 3V, IC = 1.5A 2.5
2.5 V
V
BD675A/677A/679A/681
Medium Power Linear and Switching
Applications
• Medium Power Darlington TR
• Complement to BD676A, BD678A, BD680A and BD682 respectively
1TO-126
1. Emitter 2.Collector 3.Base
©2000 Fairchild Semiconductor International
BD675A/677A/679A/681
Rev. A, February 2000
Typical Characteristics
Figure 1. DC current Gain Figure 2. Collector-Emitter Saturation Voltage
Figure 3. Base-Emitter On Voltage Figure 4. Safe Operating Area
Figure 5. Power Derating
0.1 1 10
100
1000
10000
VCE = 3V
hFE, DC CURRENT GAIN
IC[A], COLLECTOR CURRENT
0.1 1 10
0.0
0.4
0.8
1.2
1.6
2.0
2.4 Ic = 250 IB
VCE(sat)[V], SATURATION VOLTAGE
IC[A], COLLECTOR CURRENT
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
3.0
3.2
3.4
3.6
3.8
4.0
VCE = 3V
IC[A], COLLECTOR CURRENT
VBE[V], BASE-EMITTER VOLTAGE
1 10 100 1000
0.1
1
10
BD677A
10µs
IC(max). Pulsed
BD681
BD679A
BD675A
100µs
1ms
10ms
DC
IC(max). Co nt inuous
IC[A], COLLECTOR CURRENT
VCE[V], COLLECTOR-EMITTER VOLTAGE
0 25 50 75 100 125 150 175 200
0
10
20
30
40
50
PC[W], POWER DIS SIPATION
TC[oC], CASE TEMPERATURE
Package Demensions
©2000 Fairchild Semiconductor International Rev. A, February 2000
BD675A/677A/679A/681
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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