BAS21T-7-F Datasheet BAS21T-7-F | P1-P3

BAS21T

Document number: DS30264 Rev. 10 - 2

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March 2009

BAS21T

SURFACE MOUNT FAST SWITCHING DIODE

Features

• Ultra-Small Surface Mount Package

• Fast Switching Speed

• For General Purpose Switching Applications

• High Conductance

• Lead Free/RoHS Compliant (Note 3)

• "Green" Device (Notes 4 and 5)

Mechanical Data

• Case: SOT-523

• Case Material: Molded Plastic, "Green" Molding Compound,

Note 5. UL Flammability Classification Rating 94V-0

• Moisture Sensitivity: Level 1 per J-STD-020D

• Terminals: Solderable per MIL-STD-202, Method 208

• Lead Free Plating (Matte Tin Finish annealed over Alloy 42

leadframe)

• Polarity: See Diagram

• Marking Information: See Page 2

• Ordering Information: See Page 2

• Weight: 0.002 grams (approximate)

Maximum Ratings @T

A

= 25°C unless otherwise specified

Characteristic Symbol Value Unit

Repetitive Peak Reverse Voltage

V

RRM

250 V

Working Peak Reverse Voltage

DC Blocking Voltage

V

RWM

V

R

200 V

RMS Reverse Voltage

V

R

(

RMS

)

141 V

Forward Continuous Current (Note 1)

I

FM

400 mA

Average Rectified Output Current (Note 1)

I

O

200 mA

Non-Repetitive Peak Forward Surge Current @ t = 1.0

μ

s

@ t = 1.0s

I

FSM

2.5

0.5

A

Repetitive Peak Forward Surge Current

I

FRM

625 mA

Thermal Characteristics

Characteristic Symbol Value Unit

Power Dissipation (Note 1)

P

D

150 mW

Thermal Resistance Junction to Ambient (Note 1)

R

θ

JA

833

°C/W

Operating and Storage Temperature Range

T

J

, T

STG

-65 to +150

°C

Electrical Characteristics @T

A

= 25°C unless otherwise specified

Characteristic Symbol Min Max Unit Test Condition

Reverse Breakdown Voltage (Note 2)

V

(

BR

)

R

250

⎯

V

I

R

= 100μA

Forward Voltage

V

F

⎯

1.0

1.25

V

I

F

= 100mA

I

F

= 200mA

Reverse Current @ Rated DC Blocking Voltage (Note 2)

I

R

⎯

100

15

nA

μA

T

J

= 25°C

T

J

= 100°C

Total Capacitance

C

T

⎯

5.0 pF

V

R

= 0, f = 1.0MHz

Reverse Recovery Time

t

rr

⎯

50 ns

I

F

= I

R

= 30mA,

I

rr

= 0.1 x I

R

, R

L

= 100Ω

Notes: 1. Device mounted on FR-4 PC board with recommended pad layout, which can be found on our website at

http://www.diodes.com/datasheets/ap02001.pdf.

2. Short duration pulse test used to minimize self-heating effect.

3. No purposefully added lead.

4. Diodes Inc.'s "Green" policy can be found on our website at http://www.diodes.com/products/lead_free/index.php.

5. Product manufactured with Date Code UO (week 40, 2007) and newer are built with Green Molding Compound. Product manufactured prior to Date

Code UO are built with Non-Green Molding Compound and may contain Halogens or Sb

2

O

3

Fire Retardants.

TOP VIEW

SOT-523

Internal Schematic

TOP VIEW

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BAS21T

Document number: DS30264 Rev. 10 - 2

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March 2009

BAS21T

0

100 200

200

150

50

100

0

T , AMBIENT TEMPERATURE ( C)

Fig. 1 Power Derating Curve

A

°

P

,

P

O

WE

R

DISSI

P

A

T

I

O

N

(mW)

D

0.001

0.01

0.1

1

00.40.2

0. 6

I, I

N

S

T

A

N

T

A

N

E

O

U

S

F

O

R

WA

R

D

C

U

R

E

N

T

(A)

F

V , INSTANTANEOUS FORWARD VOLTAGE (V)

Fig. 2 Typical Forward Characteristics

F

0.8

1.2

1.0

1.4

0.0001

0.01

0.001

0.1

1

10

100

050100

200150

250

V , INSTANTANEOUS REVERSE VOLTAGE (V)

Fig. 3 Typical Reverse Characteristics

R

T = -40ºC

A

T = 25ºC

A

T = 75ºC

A

T = 125ºC

A

T = 150ºC

A

T = 0ºC

A

0.0

0.5

1.0

1.5

3.5

3.0

2.5

2.0

4.0

0

10

20

4030

C

,

T

O

T

AL

C

A

P

A

C

I

T

AN

C

E (p

F

)

T

V , DC REVERSE VOLTAGE (V)

Fig. 4 Total Capacitance vs. Reverse Voltage

R

Ordering Information (Notes 5 & 6)

Part Number Case Packaging

BAS21T-7-F SOT-523 3000/Tape & Reel

Notes: 6. For packaging details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.

Marking Information

Date Code Key

Year 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012

Code M N P R S T U V W X Y Z

Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Code 1 2 3 4 5 6 7 8 9 O N D

T3 = Product Type Marking Code

YM = Date Code Marking

Y = Year (ex: N = 2002)

M = Month (ex: 9 = September)

T3YM

BAS21T

Document number: DS30264 Rev. 10 - 2

3 of 3

www.diodes.com

March 2009

BAS21T

Package Outline Dimensions

Suggested Pad Layout

IMPORTANT NOTICE

Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes

without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product

described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall

assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website,

harmless against all damages.

LIFE SUPPORT

Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written

approval of the President of Diodes Incorporated.

SOT-523

Dim Min Max Typ

A 0.15 0.30 0.22

B 0.75 0.85 0.80

C 1.45 1.75 1.60

D

⎯ ⎯

0.50

G 0.90 1.10 1.00

H 1.50 1.70 1.60

J 0.00 0.10 0.05

K 0.60 0.80 0.75

L 0.10 0.30 0.22

M 0.10 0.20 0.12

N 0.45 0.65 0.50

α

0° 8°

⎯

All Dimensions in mm

Dimensions Value (in mm)

Z 1.8

X 0.4

Y 0.51

C 1.3

E 0.7

A

M

J

L

D

B

C

H

K

G

N

X

E

Y

C

Z

BAS21T-7-F

BAS21T-7-F

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