Renesas Technology Releases Variable Capacitance Diodes with Approximately
40% Smaller Mounting Area for Mobile Products Incorporating TV / VCR Tuners
Uses SFP package for ultra-small size (1.0 0.6 mm) and reduces internal capacitance
deviation by approximately 10% for superior tuner performance
Tokyo, July 13, 2004
Renesas Technology Corp. today announced the RKV5000DKK, RKV5010DKK,
and RKV5020DKK ultra -compact (1.0 0.6 mm) variable capacitance diodes (varicap diodes) for use in
TV / VCR tuners for mobile products such as laptop PCs and PDAs. Sample shipments will begin in Japan
in August 2004.
The RKV5000DKK is designed for use in UHF tuners, and the RKV5010DKK and RKV5020DKK are for
use in VHF tuners. Features of these varicap diodes are summarized below.
(1)
Ultra-Compact (1.0 0.6 mm) Lead Pin Type
Ideal for mobile products, these new varicap diodes employ SFP (Super small Flat Package)(Renesas
Technology package code), a package type measuring only 1.0 0.6 mm (excluding pins)
and
developed specifically for diodes. This reduces the actual mounting area by approximately 40% from
the company's earlier varicap diode package measuring 1.2 0.8 mm (excluding pins). The lead pin
type package makes simplifies mounting and visual confirmation. In addition, the package's mounting
height is only 0.55 mm (maximum), making it suitable for use in compact products.
(2)
Internal Capacitance Deviation Lowered 10% to Guaranteed Level of 1.8%
It is essential that the diodes employed in the same tuner have CV characteristics within a specified
capacitance range (internal capacitance deviation). The three new varicap diode products have stable
CV characteristics and reduce internal capacitance deviation by about 10%, from a guaranteed level of
2.0% (previous Renesas Technology varicap diode products) to 1.8%. These results in reduced
tracking error in actual tuner operation, improved performance, and a need for fewer tuning processes
on the production line.
In addition, samples of the RKS1500DKK, a high-frequency switching diode for band switching in TV /
VCR tuners that also employs the ultra-compact SFP package, are scheduled to begin shipping in August
2004 in Japan.
-more-
< Product Background >
In recent years, mobile products such as laptop PCs and PDAs have become thinner and more compact
while the variety of functions they offer has increased. This has boosted demand for models with built-in
TV / VCR tuners. In response, efforts are being made to make such tuners more compact and cheaper,
while increasing added value. Against this background, companies such as Renesas Technology have
endeavored to supply a broad range of varicap diode products for use in electronic tuner circuitry. These
varicap diodes are compact and offer different capacitance variat ion ratios in order to cover a wider tuning
range. In addition, they deliver improved CV characteristics (linearity) to the high-bias end.
Renesas Technology already mass produces tuner varicap diodes in the UFP (Ultra small Flat Package)
(Renesas Technology package code) lead pin type measuring 1.2 0.8 mm and 0.7 mm maximum
mounting height (excluding pins). To better meet current requirements, the company has now developed
three new varicap diode products and a high-frequency switching diode product that are even more
compact, measuring only 1.0 0.6 0.55 mm (maximum) (excluding pins).
< Product Details >
The RKV5000DKK, RKV5010DKK, and RKV5020DKK varicap diodes and RKS1500DKK high-
frequency switching diode are manufactured using an optimized PN junction formation process that enables
more compact size and uniform CV characteristics. Performance is comparable to the existing UFP
package versions from Renesas Technology, the HVC202A, HVC306C, HVC300C, and HSC277, but the
switch to the SFP package achieves a reduction of approximately 40% in the mounting area. In addition,
more linear CV characteristics mean that internal capacitance deviation has been cut by about 10%, from a
guaranteed level of 2.0% (maximum) to 1.8% (maximum).
Furthermore, the packaging quantity has been doubled, from 4,000 devices per reel to 8,000 devices. In
spite of this, the guaranteed number of groups per reel remains unchanged. This means that the number of
mounter restarts and group management defects is reduced, resulting in lower production costs.
In future Renesas Technology plans to broaden its product line still further by developing more tuner
varicap diode and high-frequency switching diode products in SFP package versions.
*
Product names, company names, or brands mentioned are the property of their respective owners.
< Typical Applications >
Electronic tuners for TV / VCR modules.
-more-
< Prices in Japan > *For Reference
Product Name
Type
Package
Sample Price
[ Tax included ]
(Yen)
RKV5000DKK
7 [ 7.35 ]
RKV5010DKK
8 [ 8.4 ]
RKV5020DKK
Variable capacitance diode
10 [ 10.5 ]
RKS1500DKK
High-frequency switching diode
SFP
(Renesas Technology
package code)
6 [ 6.3 ]
< Specifications >
(1) Variable capacitance diode
Product
Name
Max. rated
reverse
voltage
VR (V)
Capacitance
C (pF)
Capacitance
ratio
n
Series
resistance
rs (
)
Internal
capacitance
deviation
(%)
Package
(mm)
RKV5000DKK 34
C2 = 14.15 to
15.75
C25 = 2.06 to
2.35
6.3 (min.)
0.57 (max.)
1.8 (max.)
RKV5010DKK 34
C2 = 29.5 to
34.0
C25 = 2.57 to
2.90
11.0 (min.)
0.75 (max.)
1.8 (max.)
RKV5020DKK 34
C2 = 39.5 to
47.0
C25 = 2.60 to
3.00
14.5 (min.)
1.10 (max.)
1.8 (max.)
SFP
*
<1.0
0.6
0.55
(max.) >
(2) High-frequency switching diode
Product
Name
Max. rated
reverse voltage
VR (V)
Forward voltage
VF (V)
Capacitance
C (pF)
High-frequency
forward
resistance
rf (
)
Package
RKS1500DKK 35
1.0 (max.) @ IF =
10 mA
1.2 (max.)
0.7 (max.)
SFP
*
<1.0
0.6
0.55
(max.) >
*:
Renesas Technology package code. Size refers to device dimensions excluding pins.
Information contained in this news release is current as of the date of the press announcement, but may be
subject to change without prior notice.
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