PANJIT-International-2SD1781A-R1-00001

P

2SD1781A  

NPN Low Vce(sat) Transistor  

SOT-23  

Unit: inch(mm)  

50V  

3A  

Voltage  

Current  

Features  



Silicon NPN epitaxial type  



Low Vce(sat) 0.14V(max)@Ic/Ib= 1A/100mA  



High collector current capability  



Excellent DC current gain characteristics  



Lead free in compliance with EU RoHS 2.0  



Green molding compound as per IEC 61249 standard  

Mechanical Data  



Case: SOT-23 Package  



Terminals : Solderable per MIL-STD-750, Method 2026  



Approx. Weight: 0.0003 ounces, 0.0084 grams  

Maximum Ratings and Thermal Characteristics

(T

A

=25

o

C unless otherwise noted)  

PARAMETER  

SYMBOL  

V

CBO  

V

CEO  

V

EBO  

I

C  

LIMIT  

UNITS  

Collector-Base Voltage  

100  

V

V

Collector-Emitter Voltage  

50  

Emitter-Base Voltage  

7

V

Collector Current (DC)  

3

5

A

Collector Current (Pulse)  

I

CP  

A

Collector Power Dissipation  

P

D  

1.25  

-55~150  

W

Operating Junction and Storage Temperature Range  

Thermal Resistance from Junction to Ambient

(Note )  

T

J

,T

STG  

R

θJA  

100  

Note: Mounted on FR4 with 2oz. PCB at 1 inch square copper pad.  

October 17,2019-REV.01  

Page 1  

P

2SD1781A  

Electrical Characteristics

(T

A

=25

o

C unless otherwise noted)  

PARAMETER  

OFF Characteristics  

SYMBOL  

TEST CONDITION  

MIN.  

TYP.  

MAX.  

UNITS  

Collector-Emitter Breakdown Voltage  

Collector-Base Breakdown Voltage  

Emitter-Base Breakdown Voltage  

Collector-Base Cutoff Current  

Emitter-Base Cutoff Current  

Collector-Emitter Cutoff Current  

ON characteristics  

BV

CEO  

BV

CBO  

BV

EBO  

I

CBO  

I

C

= 10mA, I

B

= 0A  

I

C

= 0.1mA, I

E

= 0A  

I

E

= 0.1mA, I

C

= 0A  

V

CB

= 30V, I

E

= 0A  

V

EB

= 4V  

50  

–

–

–

V

V

100  

–

7

–

9.4  

1

–

V

100  

100  

100  

nA  

nA  

nA  

I

EBO  

–

1

I

CES  

V

CES

= 30V  

–

1

V

CE

= 5V I

C

= 50mA  

V

CE

= 5V I

C

= 0.5A  

V

CE

= 5V I

C

= 1A  

300  

–

–

DC Current Gain  

h

FE  

300  

500  

–

900  

–

–

200  

I

C

= 100mA, I

B

= 1mA  

I

C

= 500mA, I

B

= 50mA  

I

C

= 1A, I

B

= 100mA  

I

C

= 1A, I

B

= 100mA  

I

C

= 1mA, V

CE

= 2V  

I

C

= 100mA, V

CE

= 5V  

f=100MHz  

–

–

–

–

–

52  

75  

Collector-Emitter Saturation Voltage  

V

CE(SAT)  

53  

100  

140  

1.1  

1.1  

mV  

94  

Base-Emitter Saturation voltage  

Base-Emitter Turn-on voltage  

V

BE(SAT)  

V

BE(on)  

0.87  

0.52  

V

Transition Frequency  

f

T  

–

–

250  

13  

–

–

MHz  

pF  

V

CB

= 10V I

E

= 0A,  

f=1MHz  

Collector Output Capacitance  

C

OB  

October 17,2019-REV.01  

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P

2SD1781A  

TYPICAL CHARACTERISTIC CURVES  

Fig.1 Typical Base-Emitter Saturation Voltage  

Fig.2 Typical Base-Emitter Turn-on Voltage  

Fig.4 Typical Collector-Emitter Saturation  

Fig.6 Typical Capacitance  

Fig.3 Typical Collector-Emitter Saturation  

Fig.5 Typical DC Current Gain vs Collector Current  

October 17,2019-REV.01  

Page 3  

P

2SD1781A  

PART NO PACKING CODE VERSION  

Part No Packing Code  

2SD1781A_R1_00001  

2SD1781A_R2_00001  

Package Type  

SOT-23  

Packing Type  

3K pcs / 7

”

reel  

12K pcs / 13

”

reel  

Marking  

D81  

Version  

Halogen free  

Halogen free  

SOT-23  

D81  

MOUNTING PAD LAYOUT  

October 17,2019-REV.01  

Page 4  

P

2SD1781A  

Disclaimer  

●

Reproducing and modifying information of the document is prohibited without permission from Panjit  

International Inc..  

●

Panjit International Inc. reserves the rights to make changes of the content herein the document anytime  

without notification. Please refer to our website for the latest document.  

●

Panjit International Inc. disclaims any and all liability arising out of the application or use of any product  

including damages incidentally and consequentially occurred.  

●

Panjit International Inc. does not assume any and all implied warranties, including warranties of fitness for  

particular purpose, non-infringement and merchantability.  

●

Applications shown on the herein document are examples of standard use and operation. Customers are  

responsible in comprehending the suitable use in particular applications. Panjit International Inc. makes no  

representation or warranty that such applications will be suitable for the specified use without further testing or  

modification.  

●

The products shown herein are not designed and authorized for equipments requiring high level of reliabili

t

y

o

r  

relating to human life and for any applications concerning life-saving or life-sustaining, such as medical  

instruments, transportation equipment, aerospace machinery et cetera. Customers using or selling these  

products for use in such applications do so at their own risk and agree to fully indemnify Panjit International  

Inc. for any damages resulting from such improper use or sale.  

●

Since Panjit uses lot number as the tracking base, please provide the lot number for tracking when  

complaining.  

October 17,2019-REV.01  

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