Datasheet > RP1237

RP1237

更新时间： 2024-01-18 11:38:39

品牌	Logo	应用领域
村田 - MURATA		晶体谐振器
页数	文件大小	规格书
2页	118K
描述
2-Port Saw Resonator, 418MHz Nom, RUGGED, HERMETIC, LOW-PROFILE, TO-39, 3 PIN

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RP1237 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	RUGGED, HERMETIC, LOW-PROFILE, TO-39, 3 PIN	Reach Compliance Code：	unknown
风险等级：	5.84	晶体/谐振器类型：	2-PORT
频率容差 (MHz)：	0.075	插入损耗：	8 dB
安装特点：	THROUGH HOLE MOUNT	标称工作频率：	418 MHz
并联电容：	2.25 pF	物理尺寸：	D9.4XH3.18 (mm)/D0.37XH0.125 (inch)
表面贴装：	NO	Base Number Matches：	1

RP1237 数据手册

RP1237

418.0 MHz

SAW Resonator

•

Designed for 418.00 MHz Transmitters

Nominal Insertion Phase Shift of 180° at Resonance

Quartz Stability

Rugged, Hermetic, Low-Profile TO39 Case

The RP1237 is a two-port, 180° surface-acoustic-wave (SAW) resonator in a low-pro-

file TO39 case. It provides reliable, fundamental-mode, quartz frequency stabilization

of fixed-frequency transmitters operating at 418.0 MHz. The RP1237 is designed spe-

cifically for remote-control and wireless security transmitters operating in the United

Kingdom under DTI MPT 1340 and in the USA under FCC Part 15.231 regulations.

TO39-3 Case

Electrical Characteristics

Characteristic

Sym

Notes

Minimum

Typical Maximum

Units

Center Frequency (+25°C)

Absolute Frequency

417.925

418.075

±75

MHz

kHz

2, 3, 4, 5,

2, 5, 6

Tolerance from 418.000 MHz

Insertion Loss

Quality Factor

5.7

13,600

6,500

8.0

Unloaded Q

5, 6, 7

50 W Loaded Q

Temperature Stability

Turnover Temperature

Turnover Frequency

Frequency Temp. Coefficient

Absolute Value during First Year

°C

6, 7, 8

f +21

kHz

ppm/°C²

ppm/yr

FTC

0.037

|f |

Frequency Aging

£ 10

DC Insulation Resistance between Any Two Pins

1.0

RF Equivalent RLC Model

Motional Resistance

Motional Inductance

Motional Capacitance

Shunt Static Capacitance

152

2.6

477.932

0.303334

2.3

5, 7, 9

5, 6, 9

µH

2.0

Lid Symbolization (in addition to Lot and/or Date Codes)

RFM P1237

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.

Notes:

1. Frequency aging is the change in f_Cwith time and is specified at +65°C or less. Aging may exceed the specification for prolonged temperatures

above +65°C. Typically, aging is greatest the first year after manufacture, decreasing in subsequent years.

2. The frequency f_Cis the frequency of minimum IL with the resonator in the specified test fixture in a 50 W test system with VSWR £ 1.2:1. Typically,

f_OSCILLATORor f_TRANSMITTERis less than the resonator f_C.

3. One or more of the following United States patents apply: 4,454,488; 4,616,197.

4. Typically, equipment utilizing this device requires emissions testing and government approval, which is the responsibility of the equipment manufac-

turer.

5. Unless noted otherwise, case temperature T_C= +25°C± 2°C

6. The design, manufacturing process, and specifications of this device are subject to change without notice.

7. Derived mathematically from one or more of the following directly measured parameters: f_C, IL, 3 dB bandwidth, f_Cversus T_C, and C_O.

8. Turnover temperature, T_O, is the temperature of maximum (or turnover) frequency, f_O. The nominal frequency at any case temperature, T_C, may be

calculated from: f = f_O[1 - FTC (T_O- T_C)²]. Typically, oscillator T_Ois 20° less than the specified resonator T_O.

9. This equivalent RLC model approximates resonator performance near the resonant frequency and is provided for reference only. The capacitance

C_Ois the measured static (nonmotional) capacitance between either pin 1 and ground or pin 2 and ground. The measurement includes case para-

sitic capacitance.

RF Monolithics, Inc.

Phone: (972) 233-2903

Fax: (972) 387-9148

E-mail: info@rfm.com

http://www.rfm.com

RP1237-120298

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