LESHAN RADIO COMPANY, LTD.

S21–1/2

Band-switching diode

SOD523 SC-79

1

2

BA 891

2

ANODE

1

CATHODE

FEATURES

· Ultra small plastic SMD package

· Low diode capacitance: max. 1.05 pF

· Low diode forward resistance: max. 0.7

Ω

· Small inductance.

APPLICATIONS

· Low loss band-switching in VHF television tuners

· Surface mount band-switching circuits.

DESCRIPTION

The BA891 is a planar, high performance band-switching diode in the ultra small

SOD523 SMD plastic package.

LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134).

SYMBOL

PARAMETER

CONDITIONS

MIN.

MAX.

UNIT

continuous reverse voltage

–

35

V

continuous forward current

–

100

mA

total power dissipation

–

715

mW

storage temperature

-65

+150

°C

junction temperature

-65

+150

°C

SYMBOL

PARAMETER

CONDITIONS

TYP.

MAX.

UNIT

V

F

forward voltage

–

1

V

reverse current

–

20

nA

diode capacitance

f = 1 MHz; note 1; see Fig.1

0.8

1.05

pF

0.65

0.9

pF

f = 100 MHz; note 1; see Fig.2

0.45

0.7

Ω

0.36

0.5

Ω

series inductance

0.6

-

nH

Note

1. Guaranteed on AQL basis; inspection level S4, AQL 1.0.

THERMALCHARACTERISTICS

SYMBOL

PARAMETER

VALUE

UNIT

thermal resistance from junction to soldering-point

85

K/W