NSVS841 Apr. 2005
Application
644.00 MHz Data Communications
Electrical Specification: (Table 1)
The device characteristics are measured in the circuit shown in Fig.1.
Maximum Rating: (Table 2)
Mechanical Specifications: (Fig.2)
Package is designed as small as 3.2x2.5x1.1[mm3] for SMD (Surface Mount Device) type.
Notice:
This part is electrostatic discharge sensitive and may be damaged by improper handling.
Table 1. Electrical Specifications (at Room Temperature)
Item Spec. Typ.
Nominal Center Frequency (f0) 643.90~644.10MHz 644.00MHz
Insertion Loss at f0 3.5dB max. 2.5dB
Loaded Q - 1450
Attenuation f0±2MHz 20dB 25dB
Insertion Phase 644.00MHz - Reference(*1)
T urnover Temperature - 31ºC
Phase Slope - 0.37deg/kHz
Frequency Temperature Coefficient - -0.041ppm/ºC2
Substrate Material - Quartz
*1: Nominal Phase = 0ºType
Table 2. Maximum Ratings
Item Rating
Maximum Input Power 10dBm
Operating Temperature Range -30~+85ºC
Storage Temperature -30~+85ºC
JRC SAW FILTER
NSVS841
Communications Equi pment Division
Communications Equi pment Marketing Departm ent
10-1, Nishi-Shinjuku 6-chome, Shinjuku-ku,
Tokyo, 160-8328 Japan
Tel. +81 3-3348-3845
Fax. +81 3-3348-3935
http://www.jrc.co.jp/jp/product/device/saw/index.html (Jap anese)
http://www.jrc.co.jp/eng/product/saw/index.html(English)
NSVS841 Apr. 2005
1
3
4
5
6
2
(1.35)
(0.8)
(0.55) (0.6) 1.1±0.1
3.2±0.1
2.5±0.1
(1)
(b)
(2)
(a)
[4x]
[4x] [2x]
[2x]
Marking
(1) Lot Number
(a) Year
(b) Month
*Oct.--- X
Nov.--- Y
Dec.--- Z
(2) Part number Mark
Pin no. Connection
1 GND
2 IN/OUT
3 GND
4 GND
5 OUT/IN
6 GND
Fig.1 Measuring circuit
Fig.3 Desirable land area (in mm)
H3
33
12
3
45
6SAW
0.95
0.6
0.95 3.3
1.75 1.75
4.0
1.2
IN
50Ω
OUT
50
Ω
Fi
g
.2 Packa
g
e dimensions
(
in mm
)
NSVS841 Apr. 2005
Notice
1. Use this component within operating temperature range. It might not be
satisfied with electrical specification without operating temperature range.
When it is used less than -30ºC or more than +85ºC, it might be a cause of
degradation or destruction of the component. Even if it endures during a short
time, it causes degradation of qualification.
2. When soldering iron is used, solder with the temperature at the tip of so ldering
iron: 350ºC max., the time of soldering: 10 seconds max., the power of
soldering iron: 30W max..
3. Notice that the allowed time of soldering with soldering iron is accumulated
time, when soldering is repeated.
4. As rapid temperature change for cleaning after reflow soldering might be a
cause of destruction clean this component after confirming that temperature of
this component goes down to room temperature.
5. Confirm that there are not any influence for qualification to this component in
mounting on PCB when this component is cleaned.
6. As it might be a cause of degradation of destruction to apply static electricity to
this component, do not apply static electricity or excessive voltage while
assembling and measuring. And do not transport this component with bare
hand.
Note
1. This specification specifies the quality of this component as a single unit. Make
sure that this component is evaluated and confirmed against this specification
when it is mounted to your products.
2. The information contained herein may be changed without prior notice. It is
therefore advisable to contact Jap an Radio Comp any before proceeding with the
design of equipment incorporating this product.
3.The products are designed to be used with ordinary electronic equipment (data
and communications equipment, office equipment, audio-video equipment,
measuring instruments, etc). Japan Radio Company does not assume any
liability for the case using the products with the application required high
reliability or safety extremely (such as space equipment, sea-bottom equipment,
medical equipment etc). When intending to use any our product please
contact our sales representatives in advance.
CH1: Center 644 Span: 10
0
20
40
60
80
100
Insertion Loss [dB]
Insertion Loss [dB]
CH2: Center 644 Span: 10
0
2
4
6
8
10
CH1: Center 644 Span: 1
0
2
4
6
8
10
Insertion Loss [dB]
Phase [deg]
CH1: Center 644 Span: 1
180
90
0
-90
-180
FREQUENCY CHARACTERISTICS
NSVS841 Apr. 2005
S11 S22
NSVS971 Dec-04
Fig.1 Measuring circuit
13.30±0.20
6.5±0.20
(R0.3)
[4×]
(0.76)
(2.54)
(1.4)
(0.8)
[12×]
(2.54±0.15)
Pin No. Connection
1GND(PKG)
2GND(PKG)
3 GND(PKG)
4GND(PKG)
5OUT/IN
6 GND(signal)
7GND(PKG)
8GND(PKG)
9GND(PKG)
10 GND(PKG)
11 IN/OUT
12 GND(signal)
2.0 max.
(1)
(a) (b)
(3)
Marking
(1) Manufacture's Mark
(2) Lot Number
(a) Year
(b) Month
*Oct.--- X
Nov.--- Y
Dec.--- Z
(c) Date
1-9--- 0
10-19 --- 1
20-31 --- 2
(3) Part Number Mark
(1.26±0.13)
[12×]
[12×]
(2.54)
(R0.3)
(2.54±0.15)
(2)
12345
6
7
8
910
11
12
(C)
Fig.2 Package dimensions(in mm)
J4Y1
VS971
１２３４
10
９８７
11
12
６
５
OUT
50O
IN
50O
SAW
*27nH
*27nH
39pF
33pF
*murata LQW18A series
