BA979, BA979S
www.vishay.com
Vishay Semiconductors
RF PIN Diodes - Single in QuadroMELF SOD-80
FEATURES
• Wide frequency range 10 MHz to 1 GHz
• AEC-Q101 qualified
• Material categorization:
For definitions of compliance
www.vishay.com/doc?99912
please
see
APPLICATIONS
• Current controlled
attenuators
HF
resistance
in
adjustable
MECHANICAL DATA
Case:
QuadroMELF SOD-80
Weight:
approx. 34 mg
Cathode band color:
black
Packaging codes/options:
GS18/10K per 13" reel (8 mm tape), 10K/box
GS08/2.5K per 7" reel (8 mm tape), 12.5K/box
PARTS TABLE
PART
BA979
BA979S
TYPE
DIFFERENTIATION
z
r
> 5 k
z
r
> 9 k
ORDERING CODE
BA979-GS18 or BA979-GS08
BA979S-GS18 or BA979S-GS08
TYPE MARKING
-
-
INTERNAL
CONSTRUCTION
Single diode
Single diode
REMARKS
Tape and reel
Tape and reel
ABSOLUTE MAXIMUM RATINGS
(T
amb
= 25 °C, unless otherwise specified)
PART
Reverse voltage
Forward continuous current
TEST CONDITION
SYMBOL
V
R
I
F
VALUE
30
50
UNIT
V
mA
THERMAL CHARACTERISTICS
(T
amb
= 25 °C, unless otherwise specified)
PARAMETER
Thermal resistance junction to ambient air
Junction temperature
Storage temperature range
TEST CONDITION
on PC board
50 mm x 50 mm x 1.6 mm
SYMBOL
R
thJA
T
j
T
stg
VALUE
500
125
- 55 to + 150
UNIT
K/W
°C
°C
ELECTRICAL CHARACTERISTICS
(T
amb
= 25 °C, unless otherwise specified)
PARAMETER
Forward voltage
Reverse current
Diode capacitance
Differential forward resistance
Reverse impedance
Minority carrier lifetime
TEST CONDITION
I
F
= 20 mA
V
R
= 30 V
f = 100 MHz, V
R
= 0 V
f = 100 MHz, I
F
= 1.5 mA
f = 100 MHz, V
R
= 0 V
I
F
= 10 mA, I
R
= 10 mA
BA979
BA979S
PART
SYMBOL
V
F
I
R
C
D
r
f
z
r
z
r
5
9
4
MIN.
TYP.
MAX.
1
0.05
0.5
50
UNIT
V
μA
pF
k
k
μs
Rev. 1.6, 21-May-12
Document Number: 85533
1
For technical questions within your region:
DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
BA979, BA979S
www.vishay.com
TYPICAL CHARACTERISTICS
(T
amb
= 25 °C, unless otherwise specified)
100
Vishay Semiconductors
I
F
- Forward Current (mA)
10
T
amb
= 25 °C
1
Scattering Limit
0.1
0.01
0
95 9735
0.4
0.8
1.2
1.6
2.0
V
F
- Forward
Voltage
(V)
Fig. 1 -
Forward Current vs. Forward Voltage
r
f
- Differential Forward Resistance (Ω)
10 000
1000
100
f > 20 MHz
T
j
= 25 °C
10
1
0.001
0.01
0.1
1
10
95 9734
I
F
- Forward Current (mA)
Fig. 2 -
Differential Forward Resistance vs. Forward Current
a - Typical Cross Modulation Distortion (dB)
20
Π
- Circuit
with
10 dB Attenuation
V
0
= 40 dBmV
f
1
= 100 MHz
unmodulated
- 20
0
- 40
- 60
-
80
0
20
40
60
80
f
2
, modulated
with
200 kHz, m = 100 % (MHz)
Fig. 3 - Typ. Cross Modulation Distortion vs. Frequency f
2
95 9733
Rev. 1.6, 21-May-12
Document Number: 85533
2
For technical questions within your region:
DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
Legal Disclaimer Notice
www.vishay.com
Vishay
Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively,
“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
disclosure relating to any product.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,
consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular
purpose, non-infringement and merchantability.
Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of typical
requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements
about the suitability of products for a particular application. It is the customer’s responsibility to validate that a particular
product with the properties described in the product specification is suitable for use in a particular application. Parameters
provided in datasheets and/or specifications may vary in different applications and performance may vary over time. All
operating parameters, including typical parameters, must be validated for each customer application by the customer’s
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
applications or for any other application in which the failure of the Vishay product could result in personal injury or death.
Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk. Please
contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by
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Material Category Policy
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as RoHS-Compliant fulfill the
definitions and restrictions defined under Directive 2011/65/EU of The European Parliament and of the Council
of June 8, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment
(EEE) - recast, unless otherwise specified as non-compliant.
Please note that some Vishay documentation may still make reference to RoHS Directive 2002/95/EC. We confirm that
all the products identified as being compliant to Directive 2002/95/EC conform to Directive 2011/65/EU.
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as Halogen-Free follow Halogen-Free
requirements as per JEDEC JS709A standards. Please note that some Vishay documentation may still make reference
to the IEC 61249-2-21 definition. We confirm that all the products identified as being compliant to IEC 61249-2-21
conform to JEDEC JS709A standards.
Revision: 02-Oct-12
1
Document Number: 91000
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