Diodes-Incorporated-MMBT4403

MMBT4403  

40V PNP SMALL SIGNAL TRANSISTOR IN SOT23  

Features  

Mechanical Data  













Epitaxial Planar Die Construction  





Package: SOT23  

Ideal for Medium Power Amplification and Switching  

Package Material: Molded Plasti

c “Green” Compound  

UL Flammability Rating 94V-0  

Complementary NPN Type: DIODES MMBT4401  

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

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

For automotive applications requiring specific change  

control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP  

capable, and manufactured in IATF 16949 certified facilities),  

please

or your local Diodes representative.  





Moisture Sensitivity: Level 1 per J-STD-020  

Terminals: Finish – Matte Tin Plated Leads, Solderable per  

MIL-STD-202, Method 208  



Weight: 0.008 grams (Approximate)  

SOT23  

C

E

B

C

B

E

Top View  

Pin-Out  

Device Symbol  

Top View  

Ordering Information

(Note 4)  

Packing  

Part Number  

Package  

Marking  

Reel Size (inches)  

Tape Width (mm)  

Qty.  

3,000  

10,000  

Carrier  

Reel  

Reel  

MMBT4403-7-F  

MMBT4403-13-F  

SOT23  

SOT23  

K2T  

K2T  

7

13  

8

8

Notes:  

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.  

free/ for more information about Diodes Incorporated’s definitions of Hal

ogen- and Antimony-free, “Green” and  

Lead-free.  

3. Halogen- and Antimony-

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

<1000ppm antimony compounds.  

4. For packaging details, go to our website a

Marking Information  

K2T = Product Type Marking Code  

YM = Date Code Marking  

Y = Year (ex: K = 2023)  

K2T  

M = Month (ex: 2 = February)  

Date Code Key  

Year  

2003  

……  

2023  

2024  

2025  

2026  

2027  

2028  

2029  

2030  

2031  

2032  

Code  

P

……  

K

L

M

N

O

P

R

S

T

U

Aug  

Sep  

Oct  

Nov  

Dec  

Month  

Code  

Jan  

Feb  

Mar  

Apr  

May  

Jun  

Jul  

1

2

3

4

5

6

7

8

9

O

N

D

1 of 6  

March 2023  

© 2023 Copyright Diodes Incorporated. All Rights Reserved.  

MMBT4403  

Document Number: DS30058

 

Rev. 13 – 2  

MMBT4403  

Absolute Maximum Ratings

(@T

A

= +25°C, unless otherwise specified.)  

Characteristic  

Symbol  

V

CBO  

V

CEO  

V

EBO  

I

C  

Value  

-40  

Unit  

V

Collector-Base Voltage  

Collector-Emitter Voltage  

Emitter-Base Voltage  

-40  

V

-6  

V

Collector Current – Continuous (Note 7)  

-600  

mA  

Thermal Characteristics

(@T

A

= +25°C, unless otherwise specified.)  

Characteristic  

Collector Power Dissipation  

Symbol  

Value  

310  

350  

403  

357  

Unit  

(Note 5)  

(Note 6)  

(Note 5)  

(Note 6)  

(Note 7)  

(Note 5)  

mW  

P

D  

Thermal Resistance, Junction to Ambient  

R

θ

JA  



C/W

  

Thermal Resistance, Junction to Leads  

Thermal Resistance, Junction to Case  

Operating and Storage Temperature Range  

350  

R

θ

JL  

R

θ

JC  



C/W

  



C/W

  



C  

55  

-55 to +150  

T

J,

T

STG  

Notes:  

5. For the device mounted on minimum recommended pad layout FR4 PCB with high coverage of single sided 1oz copper, in still air conditions.  

6. For the device mounted on 15mm x 15mm x 1.6mm FR4 PCB with high coverage of single sided 1oz copper, in still air conditions.  

7. Thermal resistance from junction to solder-point (at the end of the collector lead).  

Thermal Characteristics and Derating Information  

0.4  

0.3  

0.2  

0.1  

0.0  

400  

350  

300  

250  

200  

150  

100  

50  

D=0.5  

D=0.2  

D=0.1  

Single Pulse  

D=0.05  

10  

0

0

25  

50  

75  

100 125 150  

100µ 1m

 

10m 100m  

1

100  

1k  

Pulse Width (s)  

Temperature (°C)  

Transient Thermal Impedance  

Derating Curve  

10  

Single Pulse. T

amb

=25°C  

1

0.1  

10m  

100m  

1

10  

100  

1k  

Pulse Width (s)  

Pulse Power Dissipation  

2 of 6  

March 2023  

© 2023 Copyright Diodes Incorporated. All Rights Reserved.  

MMBT4403  

Document Number: DS30058

 

Rev. 13 – 2  

MMBT4403  

Electrical Characteristics

(@T

A

= +25°C, unless otherwise specified.)  

Characteristic  

OFF CHARACTERISTICS (Note 8)  

Collector-Base Breakdown Voltage  

Collector-Emitter Breakdown Voltage  

Emitter-Base Breakdown Voltage  

Collector Cutoff Current  

Symbol  

Min  

Max  

Unit  

Test Condition  

I

C

= -100



A  

-40  

-40  

-6  

V

V

BV

CBO  

BV

CEO  

BV

EBO  

I

CEX  







I

C

= -10mA  

V

I

E

= -100



A  

V

CE

= -35V, V

EB(off)

= -0.4V  

V

CE

= -35V, V

EB(off)

= -0.4V  

-100  

nA  

nA  





Base Cutoff Current  

-100  

I

BL  

ON CHARACTERISTICS (Note 8)  

I

C

= -100µA,

 

V

CE

= -1V  

I

C

= -1.0mA,

 

V

CE

= -1V  

I

C

= -10mA,

 

V

CE

= -1V  

I

C

= -150mA, V

CE

= -2V  

I

C

= -500mA, V

CE

= -2V  

I

C

= -150mA, I

B

= -15mA  

I

C

= -500mA, I

B

= -50mA  

I

C

= -150mA, I

B

= -15mA  

I

C

= -500mA, I

B

= -50mA  







300

  



30  

60  

100  

100  

20  

DC Current Gain  

h

FE  



-0.40  

-0.75  

Collector-Emitter Saturation Voltage  

Base-Emitter Saturation Voltage  

V

V

V

CE(sat)  

V

BE(sat)  



-0.75  



-0.95  

-1.30  

SMALL SIGNAL CHARACTERISTICS  

Output Capacitance  

8.5  

30  

pF  

pF  

C

obo  

C

ibo  

h

ie  





1.5  

0.1  

60  

V

CB

= -10V, f = 1.0MHz, I

E

= 0  

V

EB

= -0.5V, f = 1.0MHz, I

C

= 0  

Input Capacitance  

Input Impedance  

15  

k

  

Voltage Feedback Ratio  

Small Signal Current Gain  

Output Admittance  

8.0  

500  

100  

x 10

-4  

h

re  

V

CE

= -10V, I

C

= -1mA,  

f = 1kHz  

h

fe  





S  

1.0  

h

oe  

V

CE

= -10V, I

C

= -20mA,  

f = 100MHz  

Current Gain-Bandwidth Product  

200  

MHz  

f

T  



SWITCHING CHARACTERISTICS  

Delay Time  

15  

20  

ns  

ns  

ns  

ns  

t

d  

t

r  









V

CC

= -30V, I

C

= -150mA,  

V

BE(off)

= -2V, I

B1

= -15mA  

Rise Time  

Storage Time  

225  

30  

t

s  

t

f  

V

CC

= -30V, I

C

= -150mA,  

I

B1

= -I

B2

= -15mA  

Fall Time  

Note:  

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

3 of 6  

March 2023  

© 2023 Copyright Diodes Incorporated. All Rights Reserved.  

MMBT4403  

Document Number: DS30058

 

Rev. 13 – 2  

MMBT4403  

Typical Electrical Characteristics

(@T

A

= +25°C, unless otherwise specified.)  

4 of 6  

March 2023  

© 2023 Copyright Diodes Incorporated. All Rights Reserved.  

MMBT4403  

Document Number: DS30058

 

Rev. 13 – 2  

MMBT4403  

Package Outline Dimensions  

SOT23  

All 7°  

H

SOT23  

GAUGE PLA

N

E  

0.25  

Dim  

A

B

C

D

F

G

H

Min  

Max  

0.51  

1.40  

2.50  

1.03 0.915  

0.60 0.535  

Typ  

0.40  

1.30  

2.40  

J

0.37  

1.20  

2.30  

0.89  

0.45  

1.78  

2.80  

K

K1  

a

M

A

L

L1  

2.05  

3.00  

1.83  

2.90  

0.05  

J

0.013 0.10  

K

K1  

L

L1  

M

a

0.890 1.00 0.975  

0.903 1.10 1.025  

C

B

0.45  

0.25  

0.61  

0.55  

0.55  

0.40  

0.085 0.150 0.110  

0° 8°

 

—  

D

All Dimensions in mm  

G

F

Suggested Pad Layout  

SOT23  

Dimensions Value

 

(in mm)  

C

X

2.0  

0.8  

Y

X1  

Y

Y1  

1.35  

0.9  

2.9  

Y1  

C

X

X1  

5 of 6  

March 2023  

© 2023 Copyright Diodes Incorporated. All Rights Reserved.  

MMBT4403  

Document Number: DS30058

 

Rev. 13 – 2  

MMBT4403  

IMPORTANT NOTICE  

DIODES INCORPORATED (Diodes) AND ITS SUBSIDIARIES MAKE NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH  

1.  

REGARDS TO ANY INFORMATION CONTAINED IN THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF  

MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY  

RIGHTS (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).  

2.  

The Information contained herein is for informational purpose only and is provided only to illustrate the operation

of Diodes’ products  

described herein and application examples. Diodes does not assume any liability arising out of the application or use of this document or any  

product described herein. This document is intended for skilled and technically trained engin

eering customers and users who design with Diodes’  

products. Diodes’ products may be used to facilitate safety

-related applications; however, in all instances customers and users are responsible for  

(a) selecting the appropriate Diodes products for their a

pplications, (b) evaluating the suitability of Diodes’ products for their intended applications,  

(c) ensuring their applications, which incorporate Diodes’ products, comply the applicable legal and regulatory requirements

as well as safety and  

functional-safety related standards, and (d) ensuring they design with appropriate safeguards (including testing, validation, quality control  

techniques, redundancy, malfunction prevention, and appropriate treatment for aging degradation) to minimize the risks associated with their  

applications.  

3.  

Diodes assumes no liability for any application-related information, support, assistance or feedback that may be provided by Diodes  

from time to time. Any customer or user of this document or products described herein will assume all risks and liabilities associated with such  

use, and will hold Diodes and all companies whose products are represented herein or on Diodes’ websites, harmless against al

l damages and  

liabilities.  

4.  

Products described herein may be covered by one or more United States, international or foreign patents and pending patent  

applications. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks  

and trademark applications. Diodes does not convey any license under any of its intellectual property rights or the rights of any third parties  

(including third parties whose products and services may be described in this document or on Diodes’ website) under this docu

ment.  

5.  

Diodes’  

products  

are  

provided  

subject  

to  

Diodes’  

Standard  

Terms  

and  

Conditions  

of  

Sale  

or other applicable terms. This document does not  

alter or expand the applicable warranties provided by Diodes. Diodes does not warrant or accept any liability whatsoever in respect of any  

products purchased through unauthorized sales channel.  

6.  

Diodes’ products and technology may not be used for or incorporated into any products or systems whose manufacture, use or sa

le is  

prohibited under any applicable laws and regulations. Should customers or users use Diodes’ products in contraven

tion of any applicable laws or  

regulations, or for any unintended or unauthorized application, customers and users will (a) be solely responsible for any damages, losses or  

penalties arising in connection therewith or as a result thereof, and (b) indemnify and hold Diodes and its representatives and agents harmless  

against any and all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim relating to any noncompliance with  

the applicable laws and regulations, as well as any unintended or unauthorized application.  

7.  

While efforts have been made to ensure the information contained in this document is accurate, complete and current, it may contain  

technical inaccuracies, omissions and typographical errors. Diodes does not warrant that information contained in this document is error-free and  

Diodes is under no obligation to update or otherwise correct this information. Notwithstanding the foregoing, Diodes reserves the right to make  

modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described  

herein. This document is written in English but may be translated into multiple languages for reference. Only the English version of this document  

is the final and determinative format released by Diodes.  

8.  

Any unauthorized copying, modification, distribution, transmission, display or other use of this document (or any portion hereof) is  

prohibited. Diodes assumes no responsibility for any losses incurred by the customers or users or any third parties arising from any such  

unauthorized use.  

9. This Notice may be periodically updated with the most recent version available at

The Diodes logo is a registered trademark of Diodes Incorporated in the United States and other countries.  

All other trademarks are the property of their respective owners.  

© 2023 Diodes Incorporated. All Rights Reserved.  

6 of 6  

March 2023  

© 2023 Copyright Diodes Incorporated. All Rights Reserved.  

MMBT4403  

Document Number: DS30058

 

Rev. 13 – 2