BF256AG [ONSEMI]

JFET N-Channel 30V TO-92;


型号：	BF256AG
厂家：	ONSEMI
描述：	JFET N-Channel 30V TO-92
文件：	总5页 (文件大小：96K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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Is Now

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onsemi andꢀꢀꢀꢀꢀꢀꢀand other names, marks, and brands are registered and/or common law trademarks of Semiconductor Components Industries, LLC dba “onsemi” or its affiliates and/or

subsidiaries in the United States and/or other countries. onsemi owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of onsemi

product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. onsemi reserves the right to make changes at any time to any products or information herein, without

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or suitability of its products for any particular purpose, nor does onsemi 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 onsemi products, including compliance with all laws,

regulations and safety requirements or standards, regardless of any support or applications information provided by onsemi. “Typical” parameters which may be provided in onsemi 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. onsemi does not convey any license under any of its intellectual property rights nor the rights of others. onsemi 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

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associated with such unintended or unauthorized use, even if such claim alleges that onsemi was negligent regarding the design or manufacture of the part. onsemi is an Equal Opportunity/Affirmative

Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. Other names and brands may be claimed as the property of others.

BF256A

BF256A is a Preferred Device

JFET - General Purpose

N–Channel

N–Channel Junction Field Effect Transistor designed for VHF and

UHF applications.

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• Low Cost TO–92 Type Package

• Forward Transfer Admittance, Y = 4.5 mmhos (Min)

1 DRAIN

• Transfer Capacitance – C = 0.7 (Typ)

rss

• Power Gain at f = 800 MHz, Typ. = 11 dB

GATE

MAXIMUM RATINGS

2 SOURCE

Rating

Drain–Source Voltage

Drain–Gate Voltage

Symbol

Value

Unit

Vdc

TO–92

CASE 29

STYLE 5

Vdc

Gate–Source Voltage

Forward Gate Current

Total Device Dissipation

Vdc

mAdc

G(f)

MARKING DIAGRAMS

@ T = 25°C

360

2.88

mW/°C

Derate above 25°C

Operating and Storage Channel

Temperature Range

–65 to +150

°C

channel

stg

256A

YWW

500

400

300

200

= Year

= Work Week

ORDERING INFORMATION

Device

BF256A

Package

Shipping

TO–92

5000 Units/Box

Preferred devices are recommended choices for future use

and best overall value.

100

100 125

150

175

200

FREE AIR TEMPERATURE (°C)

Figure 1. Power Derating Curve

Semiconductor Components Industries, LLC, 2001

Publication Order Number:

September, 2001 – Rev. 3

BF256A/D

BF256A

ELECTRICAL CHARACTERISTICS (T = 25°C unless otherwise noted)

Characteristic

Symbol

Min

Typ

Max

Unit

OFF CHARACTERISTICS

Gate–Source Breakdown Voltage

Gate–Source Voltage

(–I = –1.0 µAdc, V

= 0)

= 15 Vdc, I = 200 µA)

–V

(BR)GSS

0.5

—

–

—

Vdc

–V

—

7.5

5.0

Gate Reverse Current

(–V

= 20 Vdc, V

= 0)

–I

GSS

nAdc

ON CHARACTERISTICS

Zero–Gate–Voltage Drain Current (Note 1.)

= 15 Vdc, V

= 0)

3.0

–

7.0

mAdc

DSS

SMALL–SIGNAL CHARACTERISTICS

Forward Transfer Admittance

Reverse Transfer Capacitance

Output Capacitance

= 15 Vdc, V

= 0, f = 1 kHz)

|Y |

4.5

–

5.0

0.7

–

mmhos

= 1 Vdc, f = 1 MHz)

= 20 Vdc, –V

rss

oss

gfs

= 20 Vdc, V

= 0, f = 1 MHz)

–

1.0

= 15 Vdc, V

Cut–Off Frequency (Note 2.)

= 0)

–

1000

MHz

1. Pulse Test: Pulse Width = 300 µs, Duty Cycle = 2.0%.

2. The frequency at which gfs is 0.7 of its value at 1 KHz.

4.5

–V

= 0 V

= 15 Vdc

3.5

0.2 V

0.4 V

2.5

1.5

0.6 V

0.8 V

0.5

BF256A

= 0

12 14 16 18 20

, DRAIN CURRENT (mA) @ V

, DRAIN–TO–SOURCE VOLTAGE (VOLTS)

DSS

Figure 2. Correlation Between

–V and I

Figure 3. Drain Current versus

Drain–to–Source Voltage

GS(off)

DSS

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BF256A

100

= 15 Vdc

= 0

= g + j

is bis

= 15 Vdc

= 0

= g – j

fs bfs

–b

0.1

–g

0.1

0.01

0.1

100

f, FREQUENCY (MHz)

1000

100

f, FREQUENCY (MHz)

1000

Figure 4. Input Admittance versus Frequency

Figure 5. Forward Transfer Admittance versus

Frequency

= 15 Vdc

= 0

= g + j

os bos

= 15 Vdc

= 0

= –g – j

rs brs

0.1

–b

–g

0.1

0.01

0.001

100

f, FREQUENCY (MHz)

1000

100

1000

f, FREQUENCY (MHz)

Figure 6. Reverse Transfer Admittance

versus Frequency

Figure 7. Output Admittance versus

Frequency

1.0

= 20 Vdc

f = 1 MHz

0.5

= 20 Vdc

f = 1 MHz

–V , GATE–SOURCE VOLTAGE (VOLTS)

Figure 8. Input Capacitance versus

Gate–Source Voltage

Figure 9. Reverse Transfer Capacitance

versus Gate–Source Voltage

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BF256A

PACKAGE DIMENSIONS

TO–92 (TO–226)

CASE 29–11

ISSUE AL

NOTES:

1. DIMENSIONING AND TOLERANCING PER ANSI

Y14.5M, 1982.

2. CONTROLLING DIMENSION: INCH.

3. CONTOUR OF PACKAGE BEYOND DIMENSION R

IS UNCONTROLLED.

4. LEAD DIMENSION IS UNCONTROLLED IN P AND

BEYOND DIMENSION K MINIMUM.

INCHES

DIM MIN MAX

MILLIMETERS

SEATING

PLANE

MIN

4.45

4.32

3.18

0.407

1.15

2.42

0.39

12.70

6.35

2.04

---

MAX

5.20

5.33

4.19

0.533

1.39

2.66

0.50

---

0.175

0.170

0.125

0.016

0.045

0.095

0.015

0.500

0.250

0.080

---

0.205

0.210

0.165

0.021

0.055

0.105

0.020

---

X X

---

0.105

0.100

---

2.66

2.54

---

SECTION X–X

0.115

0.135

2.93

3.43

---

ON Semiconductor and

are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes

without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular

purpose, nor does SCILLC 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. “Typical” parameters which may be provided in SCILLC 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. SCILLC does not convey any license under its patent rights nor the rights of others.

SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications

intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or

death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold

SCILLC 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 SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer.

PUBLICATION ORDERING INFORMATION

Literature Fulfillment:

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For additional information, please contact your local

Sales Representative.

N. American Technical Support: 800–282–9855 Toll Free USA/Canada

BF256A/D

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