Siemens BB 641 Technical data

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Silicon Variable Capacitance Diode

BB 641

●For VHF Hyperband TV/TR tuners

●High capacitance ratio

●Low series resistance

1

2

Type	Ordering Code	Pin Configuration			Marking	Package
	(tape and reel)	1	2
BB 641	Q62702-B792	C		A	red G	SOD-323

Maximum Ratings

Parameter	Symbol	Values	Unit
Reverse voltage	VR	30	V
Reverse voltage (R ≥ 5 kΩ)	VRM	35	V
Forward current	IF	20	mA
Operating temperature range	Top	– 55 … + 150	°C
Storage temperature range	Tstg	– 55 … + 150	°C
Thermal Resistance
Junction-ambient	Rth JA	≤ 450	K/W

BB 641

Electrical Characteristics

at TA = 25 °C, unless otherwise specified.

Parameter	Symbol		Value		Unit
		min.	typ.	max.
DC Characteristics
Reverse current	IR				nA
VR = 30 V		–	–	20
VR = 30 V, TA = 85 °C		–	–	200
Diode capacitance	CT				pF
VR = 1 V, f = 1 MHz		62	69	76
VR = 28 V, f = 1 MHz		2.65	2.88	3.1
Capacitance ratio	CT1/CT28				–
VR = 1 V, 28 V, f = 1 MHz		22	24	–
Capacitance matching	CT/CT				%
VR = 1 V … 28 V, f = 1 MHz		–	–	2.5
Series resistance	rS				Ω
CT = 30 pF, f = 100 MHz		–	1.55	–
Series inductance	Ls	–	1.8	–	nH

Package Outline

SOD-323

Dimensions in mm