RoHS
販売終了品 (DISCONTINUED)

RF -NIKKOHM

リード付高周波減衰器
VHF/UHF THROUGH-HOLE ATTENUATOR

RFA-50T, RFA-75T,
RFA-300T, RFA-600T

Features and Applications

特長・用途

RF attenuators with 50ohm, 75ohm, 300ohm and600ohm characteristic impedance and Ｔ schematic.
For through hole applications. SIP and DIP.
Long life and temperature stability a result of Ni-Cr thinfilm and alumina substrates. RFA series useful inisolation circuits, data transmission, mobile, RFapplications and measurements

特性インピーダンス 50-75-300-600 オームの高周波減衰器。
集中定数形 T 回路、SIP 型のリード付きの減衰器。
Ni-Cr 薄膜技術による優れた温度安定性と長期寿命。
半導体試験機器、通信機器、高周波電源装置、高周波計測機器用の、信号減衰回路、インピーダンス整合回路。

性能・仕様

Specifications and Performances

形式
形状
Characteristic
減衰量
周波数
Model
Type
Impedance
Attenuation
Frequency
RFA-50TF
T-SIP 2.54pitch leads
50 ohm
2,3,4,5,6,7,8,9,10,16, 20,30,32 dB
DC-100MHz
RFA-75TF
T-SIP 2.54pitch leads
75 ohm
2,3,4,5,6,7,8,9,10,16, 20,30 dB
DC-100MHz
RFA-300TF
T-SIP 2.54pitch leads
300 ohm
2,3,4,5,6,7,8,9,10,16, 20,30 dB
DC-100MHz
RFA-600TF
T-SIP 2.54pitch leads
600 ohm
2,3,4,5,6,7,8,9,10,16, 20,30 dB
DC-100MHz
RFA-50T
T-SIP 5.0pitch leads
50 ohm
2,3,4,5,6,7,8,9,10,16, 20,30,32 dB
DC-100MHz
RFA-75T
T-SIP 5.0pitch leads
75 ohm
2,3,4,5,6,7,8,9,10,16, 20,30 dB
DC-100MHz
RFA-300T
T-SIP 5.0pitch leads
300 ohm
2,3,4,5,6,7,8,9,10,16, 20,30 dB
DC-100MHz
RFA-600T
T-SIP 5.0pitch leads
600 ohm
2,3,4,5,6,7,8,9,10,16, 20,30 dB
DC-100MHz
注記：1dB と 40dB については、工場にお問合せください。Note: 1db and 40dB are optional, consult factory.

形名呼称

Ordering Information

Model
RFA-50TF|
RFA-50TF
RFA-75TF
RFA-300TF
RFA-600TF|
RFA-50T
RFA-75T
RFA-300T
RFA-600T

Attenuation
Imp. Tolerance
6dB
F (1%)||
2dB
F (+/-1%)
3dB
4dB
5dB, 6dB, 7dB
8dB, 9dB
10dB
16dB
20dB
30dB
32dB(*)(*): Attenuation 32dB is optional only for RFA50TF and RFA50T.

回路接続

定格電力
Rate Power
0.25W
0.25W
0.25W
0.25W
0.50W
0.50W
0.50W
0.50W

Pin Assignment
#1Zi

Vo

Vi%-rating power
120
Zo10080#260Attenuation:dB  20 log#1 #2 #3

Note--|---

Power Derating

負荷軽減#3RFT-50TF

RoHSZ00|Z00

VoVi40200-55050100150200
Ambient Temperature (deg C)

Nikkohm Co., Ltd. 3-31-2640 Minamicho, Misawa, Aomori 033-0036 Japan TEL: +81-176-53-2105, FAX: +81-176-53-2106© 2009 Nikkohm Co., Ltd.
URL: http://www.nikkohm.co.jp & http://www.nikkohm.com / e-mail: info@nikkohm.co.jp

RoHS

販売終了品 (DISCONTINUED)

RF -NIKKOHM
リード付高周波減衰器

VHF/UHF THROUGH-HOLE ATTENUATORS

RFA-50T, RFA-75T, RFA-300T, RFA-600T
外形寸法

Dimensions

RFA-50TF, RFA-75TF, RFA-300TF, RFA-600TF
A

Symbol
A
B
C
DE
F
GC
Ｂ

E
DF

性能・仕様

Gmm
8.0max7.0max3.0max
2.54
0.5
0.25
3.3

RFA-50T, RFA-75T, RFA-300T, RFA-600T
A

C

B
D
G
DE

Symbol
A
B
C
D
E
F
Gmm
13.0max
11.5max
2.5max5.00.5φ20

Performances

項目
Items
インピーダンス許容差
Tolerance of Impedance
減衰量許容差Tolerance of Attenuation
インピーダンス温度係数
TCR of Impedance
減衰量温度係数
TCR of Attenuation
定格温度範囲
Rating Temperature
はんだ耐熱性Soldering Heat
はんだ付け性
Solder-ability
耐湿性
Humidity
負荷寿命
Load Life
耐振性Vibration
動作温度範囲Operating Temperature
保存温度範囲Storage Temperature

仕様
Specifications+/-1% (F)+/-1%+/-50ppm/deg C+/-50ppm/deg C+70 deg C+/-1%
75% Covered+/-1%+/-1%

条件
Test Methods
Input dc resistance in terminating output port with precision resistor.
Output dc volt in terminating output port with precision resistor when
1V stable dc source connect to input port.
TC of input DC resistance in terminating output port with precisionresistor
Output dc volt TC in terminating output port with precision resistor
when 1V stable dc source connect to input port.
-55 deg C to +70 deg C at rating power (Operating: +155deg C)
350℃, 3 seconds, dipping
350℃, 3 seconds, dipping
40℃,-95%RH, DC0.1W, 1000H
70℃, 90minON, 30minOFF, 100H+/-1%-55 - +155 deg C-55 - +155 deg C

注記事項：
高周波減衰器、RFA-50TS, RFA-300B, RFA-600B, RFA-85FD, RFA-85FC はいずれも生産を終了しています。ご要望がなさるときは、工場に問い合わせてください。
Ｒｅｍａｒｋｓ：
Attenuators, RFA-50TS, RFA-300B, RFA-600B, RFA-85FD, RFA-85FC were discontinued, when request please call our factory.

Nikkohm Co., Ltd. 3-31-2640 Minamicho, Misawa, Aomori 033-0036 Japan TEL: +81-176-53-2105, FAX: +81-176-53-2106© 2009 Nikkohm Co., Ltd.
URL: http://www.nikkohm.co.jp & http://www.nikkohm.com / e-mail: info@nikkohm.co.jp

RF -NIKKOHM

販売終了品 (DISCONTINUED)

リード付高周波減衰器

VHF/UHF THROUGH-HOLE ATTENUATORS

RFA-50T, RFA-75T, RFA-300T, RFA-600T
RF Characteristics, Typical

S11-RFA-50T20dB

S21-RFA-50T20dB

S11-RFA-50TF20dB

S21-RFA-50TF20dB

Note: Transformation between VSWR and S11:S 11

1 |  |VSWR ........ |  | 10 20
1 |  ||  |VSWR  1.........S11  ( 20 log |  |)VSWR  1
20220901

Nikkohm Co., Ltd. 3-31-2640 Minamicho, Misawa, Aomori 033-0036 Japan TEL: +81-176-53-2105, FAX: +81-176-53-2106© 2009 Nikkohm Co., Ltd.
URL: http://www.nikkohm.co.jp & http://www.nikkohm.com / e-mail: info@nikkohm.co.jp