Diodes ZUMT491 User Manual

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NPN SMALL SIGNAL SURFACE MOUNT TRANSISTOR IN SOT323

Features

• Low saturation voltage

• 500mW power dissipation

= 1A high Continuous Current

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• Ideally suited for space / weight critical applicatons

• Totally Lead-Free & Fully RoHS compliant (Notes 1 & 2)

• Halogen and Antimony Free. “Green” Device (Note 3)

• Qualified to AEC-Q101 Standards for High Reliability

SOT323

Top View

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Device Symbol

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Diodes Incorporated

ZUMT491

Mechanical Data

• Case: SOT323

• Case material: molded plastic. “Green” molding compound.

• UL Flammability Rating 94V-0

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

• Terminals: Finish - Matte Tin Plated Leads, Solderable per

MIL-STD-202, Method 208

• Weight: 0.006 grams (Approximate)

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Pin Out

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Ordering Information (Note 4)

Product Marking Reel size (inches) Tape width (mm) Quantity per reel

ZUMT491TA T91 7 8 3,000

Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

3. Halogen and Antimony free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

4. For packaging details, go to our website at http://www.diodes.com

2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen and Antimony free,"Green" and Lead-Free. <1000ppm antimony compounds.

Marking Information

T91

T91 = Product Type Marking Code

ZUMT491

Document number: DS33334 Rev. 3 - 2

1 of 7

www.diodes.com

October 2012

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Product Line o

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ZUMT491

Maximum Ratings (@T

= +25°C, unless otherwise specified.)

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Characteristic Symbol Value Unit

Collector-Base Voltage Collector-Emitter Voltage Emitter-Base Voltage Continuous Collector Current Peak Pulse Current Base Current

V

CBO

V

CEO

V

EBO

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CM

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80 V 60 V

7 V 1 A 2 A

200 mA

Thermal Characteristics (@T

= +25°C, unless otherwise specified.)

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Characteristic Symbol Value Unit

Power Dissipation (Note 5) Thermal Resistance, Junction to Ambient (Note 5) Thermal Resistance, Junction to Leads (Note 6) Operating and Storage Temperature Range

Notes: 5. For a device surface mounted on 25mm X 25mm FR4 PCB with high coverage of single sided 1 oz copper, in still air conditions; device measured when

operating in steady state condition.

6. Thermal resistance from junction to solder-point (at the end of the leads).

P R R

T

J,TSTG

θJA θJL

D

500 mW 250 350

-55 to +150

°C/W °C/W

°C

ZUMT491

Document number: DS33334 Rev. 3 - 2

2 of 7

www.diodes.com

October 2012

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Thermal Characteristics and Derating Information

V

CE(on)

Limited

1

DC

=25°C

1s

100ms

10ms

1ms

100µs

100m

Single Pulse

T

amb

10m

Collector Current (A) I

25mm x 25mm 1oz FR4 PCB

C

100m 1 10

VCE Coll e c to r - Emitter Vol ta g e (V)

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Diodes Incorporated

ZUMT491

0.6

0.5

0.4

0.3

0.2

0.1

25mm x 25mm 1oz FR4 PCB

0.0

0 20 40 60 80 100 120 140 160

Max Powe r D i ssi pa tion (W)

Temperature (°C)

Safe Operating Area

25mm x 25mm 1oz FR4 PCB

240

T

=25°C

amb

200 160

D=0.5

120

80

D=0.2

40

0

100µ 1m 10m 100m 1 10 100 1k

Thermal Resistance (°C/W)

Pulse Width (s)

Single Pulse

D=0.05

D=0.1

Transient Thermal Impeda nc e

Derating Curve

100

25mm x 25mm 1oz FR4 PCB

Single Pulse

T

=25°C

10

amb

1

Maximum Power (W)

0.1

100µ 1m 10m 100m 1 10 100 1k

Pulse Width (s)

Pulse Power Dissipation

ZUMT491

Document number: DS33334 Rev. 3 - 2

3 of 7

www.diodes.com

October 2012