VTC4 Ver la hoja de datos (PDF) - Vectron International

Número de pieza

componentes Descripción

Fabricante

VTC4

Voltage Controlled Temperature Compensated Crystal Oscillator

Vectron International 

VTC4 Data Sheet

Handling Precautions

Although ESD protection circuitry has been designed into the the VTC4, proper precautions should be taken

when handling and mounting. VI employs a Human Body Model and a Charged-Device Model (CDM) for

ESD susceptibility 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 resistance = 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

1500

1000

Conditions

MIL-STD-883 Method 3115

JESD 22-C101

Suggested IR profile

Devices are built using lead free epoxy and can also be subjected to standard lead free IR reflow conditions,

Table 7 shows max temperatures and lower temperatures can also be used e.g. peak temperature of 220C.

Table 7. Reflow Profile (IPC/JEDEC J-STD-020)

Parameter

Symbol

PreHeat Time

Ramp Up

Time Above 217 oC

Time To Peak Temperature

Time At 260 oC (max)

Time At 240 °C (max)

Ramp Down

tS

R UP

tL

t AMB-P

tP

tp2

R DN

Value

60 sec Min, 180 sec Max

3 oC/sec Max

60 sec Min, 150 sec Max

480 sec Max

10 sec Max

60 sec Max

6 oC/sec Max

Vectron International 267 Lowell Rd, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail vectron@vectron.com

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