VS-500A 查看數據表（PDF） - Vectron International

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VS-500A

Voltage Controlled Saw Oscillator

Vectron International 

VS-500A Voltage Controlled SAW Oscillator

Handling Precautions

Although ESD protection circuitry has been designed into the the VS-500A proper precautions should be taken

when handling and mounting. VI employs a human body model and a charged-device model (CDM) for ESD sus-

ceptibility testing and design protection evaluation. ESD thresholds are dependent on the circuit parameters used

to define the model. Although no industry wide standard has been adopted for the CDM, a standard HBM of resis-

tance = 1.5Kohms and capacitance = 100pF is widely used and therefore can be used for comparison purposes.

Table 6. ESD Ratings

Model

Human Body Model

Charged Device Model

Minimum

1500V

1000V

TIME(s)

Figure 5. Suggested IR profile

VI qualification includes aging at various extreme temperatures, shock and vibration, temperature cycling and IR

reflow simulation. The conditions a device can withstand are well understood and devices can be subjected to

the profile in figure 5. This profile shows a ramp up condition to prevent thermal shock, a preheat period in which

the flux is activated, a ramp up to 183°C which is the reflow temperature of Sn/Pb eutectic and a gradual cool

down. The time above 183°C should not exceed 60 seconds and the peak temperature should be no more than

220°C for 10 seconds. The VS-500A’s are 100% screened for hermiticity so an aqueous wash is not an issue.

Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • Fax: 1-888-FAX-VECTRON

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