STMicroelectronics-SD4931

SD4931  

HF/VHF/UHF RF power N-channel MOSFET  

Datasheet

–

production data  

Features  

•

Improved ruggedness V  

> 200 V  

(BR)DSS  

•

Excellent thermal stability  

•

20:1 all phases load mismatch capability  

= 150 W min. with 14.8 dB gain @  

•

P  

OUT  

175 MHz  

•

In compliance with the 2002/95/EC European  

directive  

M174  

Epoxy sealed  

Description  

The SD4931 is an N-channel MOS field-effect RF  

power transistor. It is intended for use in 50 V DC  

large signal applications up to 250 MHz.  

Figure 1. Pin connection  

4

1

3

2

3. Gate  

4. Source  

1. Drain  

2. Source  

Table 1. Device summary  

Order code  

Marking  

Base qty.  

Package  

Packaging

(1)  

SD4931  

SD4931

(1)  

25 pcs  

M174  

Plastic tray  

1. For

 

more details please refer to

.  

June 2013  

DocID15486 Rev 4  

1/13  

This is information on a product in full production.  

Contents  

SD4931  

Contents  

2/13  

DocID15486 Rev 4  

SD4931  

Electrical data  

1

Electrical data  

1.1  

Maximum ratings  

Table 2. Absolute maximum ratings (T  

= 25 °C)  

Value  

CASE  

Symbol  

Parameter  

Drain source voltage  

Unit  

V

(BR)DSS  

V

DGR  

V

GS  

200  

200  

V

V

Drain-gate voltage (R

GS

= 1 M

Ω

)  

Gate-source voltage  

±20  

V

I

D  

Drain current  

20  

A

P

DISS  

T

J  

Power dissipation  

389  

W

°

C  

°

C  

Max. operating junction temperature  

Storage temperature  

200  

T

STG  

-65 to +150  

1.2  

Thermal data  

Table 3. Thermal data  

Parameter  

Junction – case thermal resistance  

Symbol  

Value  

Unit  

R

thJC  

0.45  

°

C/W  

DocID15486 Rev 4  

3/13  

13  

Electrical characteristics  

SD4931  

2

Electrical characteristics  

T

= +25 °C  

CASE  

2.1  

Static  

Table 4. Static  

Test conditions  

Symbol  

Min  

Typ  

Max  

Unit  

V

(BR)DSS

V

GS

= 0 V  

I

DS

= 100 mA  

V

DS

= 100 V  

V

DS

= 0 V  

200  

V

mA  

nA  

V

I

DSS  

I

GSS  

V

GS

= 0 V  

V

GS

= 20 V  

V

DS

= 10 V  

1

250  

4.0  

5.0  

V

GS(Q)  

I

D

= 250 mA  

I

D

= 10 A  

1.5  

2.5  

2.5  

3.5  

4.0  

500  

200  

8

V

DS(ON)

V

GS

= 10 V  

V

G

FS  

C

ISS  

C

OSS  

V

DS

= 10 V  

V

GS

= 0 V  

V

GS

= 0 V  

V

GS

= 0 V  

I

D

= 2.5 A  

S

V

DS

= 50 V  

V

DS

= 50 V  

V

DS

= 50 V  

f = 1 MHz  

f = 1 MHz  

f = 1 MHz  

pF  

pF  

pF  

CRSS  

2.2  

Dynamic  

Table 5. Dynamic  

Test conditions  

I

DQ

= 250 mA  

V

DD

= 50 V

 

I

DQ

= 250 mA

 

P

OUT =

150 W

 

f = 175 MHz  

Symbol  

Min  

Typ  

Max  

Unit  

P

1dB  

G

PS  

n

D  

V

DD

= 50 V  

f = 175 MHz

 

150  

13  

175  

14.8  

56  

W

dB  

%

V

DD

= 50 V

 

I

DQ

= 250 mA

 

P

OUT

= 150 W f = 175 MHz

 

50  

V

DD

= 50 V

 

I

DQ

= 250 mA

 

P

OUT =

150 W f = 175 MHz  

Load  

mismatch  

10:1 20:1  

VSWR  

All phase angles  

4/13  

DocID15486 Rev 4  

SD4931  

Typical performance  

3

Typical performance  

Figure 2. Transient thermal impedance  

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DocID15486 Rev 4  

5/13  

13  

Typical performance  

SD4931  

Figure 3. Transient thermal impedance model  

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6/13  

DocID15486 Rev 4  

SD4931  

Typical performance  

Figure 4. Power gain and efficiency vs output power_Vdd = 50

V

,

I

dq = 250 mA,  

Freq = 175 MHz  

Table 6. Vgs sort (@250 mA)  

Marking  

Min.  

Max.  

DD  

EE  

FF  

A

1.5  

1.6  

1.7  

1.8  

1.9  

2

1.6  

1.7  

1.8  

1.9  

2

B

C

D

E

2.1  

2.2  

2.3  

2.4  

2.5  

2.6  

2.7  

2.8  

2.9  

3

2.1  

2.2  

2.3  

2.4  

2.5  

2.6  

2.7  

2.8  

2.9  

3

F

G

H

I

J

K

L

M

N

O

P

3.1  

3.2  

3.3  

3.4  

3.5  

3.1  

3.2  

3.3  

3.4  

Q

DocID15486 Rev 4  

7/13  

13  

Typical performance  

SD4931  

Table 6. Vgs sort (@250 mA) (continued)  

Min.  

Marking  

Max.  

R

S

T

3.5  

3.6  

3.7  

3.8  

3.9  

3.6  

3.7  

3.8  

3.9  

4

U

V

8/13  

DocID15486 Rev 4  

SD4931  

Package mechanical data  

4

Package mechanical data  

In order to meet environmental requirements, ST offers these devices in different grades of  

®

®

ECOPACK packages,

 

depending on their level of environmental compliance. ECOPACK  

specifications, grade definitions and product status are available at:

.  

ECOPACK is an ST trademark.  

Table 7. M174 (0.500 DIA 4/L N/HERM W/FLG) mechanical data  

mm.  

Typ  

Inch  

Typ  

Dim.  

Min  

Max  

Min  

Max  

A

B

C

D

E

F

G

H

I

5.56  

5.584  

0.219  

0.230  

3.18  

3.18  

0.125  

0.125  

6.22  

6.48  

0.245  

0.720  

0.255  

0.730  

18.28  

18.54  

24.64  

12.57  

0.08  

24.89  

12.83  

0.18  

3.00  

0.970  

0.495  

0.003  

0.083  

0.150  

0.980  

0.505  

0.007  

0.118  

0.175  

0.280  

1.050  

0.130  

2.11  

J

3.81  

4.45  

7.11  

K

L

25.53  

3.05  

26.67  

3.30  

1.005  

0.120  

M

DocID15486 Rev 4  

9/13  

13  

Package mechanical data  

SD4931  

Figure 5. Package dimensions  

Controlling Dimension: Inches  

1011000D  

10/13  

DocID15486 Rev 4  

SD4931  

Marking, packing and shipping specifications  

5

Marking, packing and shipping specifications  

Table 8. Packing and shipping specifications  

Pcs per  

tray  

Dry pack  

humidity  

Order code  

Packaging  

V

GS

sort  

Lot code  

SD4931  

Plastic tray  

25  

< 10%  

Not mixed  

Not mixed  

Figure 6. Marking layout  

Table 9. Marking specifications  

Description  

Symbol  

X

CZ  

xxx  

VY  

MAR  

CZ  

y

V

Assembly plant  

Last 3 digits of diffusion lot  

Diffusion plant  

Country of origin  

T

e

st and finishing plant  

Assembly year  

yy  

Assembly week  

DocID15486 Rev 4  

11/13  

13  

Revision history  

SD4931  

6

Revision history  

Table 10. Document revision history  

Changes  

Date  

Revision  

17-Mar-2008  

14-Jan-2010  

1

2

Initial release.  

Updated test conditions in

.  

Inserted

,

and

.  

23-May-2011  

3

– Modified document title to “HF/VHF/UHF RF power N-channel  

MOSFET”  

10-Jun-2013  

4

– Corrected error in V

GS(Q)

symbol and test conditions in

.  

– Minor text edits.  

12/13  

DocID15486 Rev 4  

SD4931  

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