Littelfuse SG Series Manual do Utilizador descarregar pdf (Página 3)

Gas Discharge Tube (GDT) Products

Speciﬁcations are subject to change without notice.

Revised: 11/25/13

SG Series

Reﬂow Condition Pb–Freeassembly

Pre Heat

- Temperature Min (T

s(min)

) 150°C

- Temperature Max (T

s(max)

) 200°C

- Time (Min to Max) (t

) 60 – 180 secs

Average ramp up rate (Liquidus Temp

) to peak

3°C/secondmax

S(max)

to T

- Ramp-up Rate 5°C/secondmax

Reﬂow

- Temperature (T

) (Liquidus) 217°C

- Temperature (t

) 60 – 150 seconds

Peak Temperature (T

) 260

+0/-5

°C

Time within 5°C of actual peak

Temperature (t

)

10 – 30 seconds

Ramp-down Rate 6°C/secondmax

Time 25°C to peak Temperature (T

) 8minutesMax.

Do not exceed 260°C

Soldering Parameters - Reﬂow Soldering (Surface Mount Devices)

Time

Temperature

S(max)

S(min)

time to peak temperature

(t 25ºC to peak)

Ramp-down

Ramp-up

Preheat

Critical Zone

to T

Device Dimensions

4.5 +/- 0.3

2.7 +/- 0.3

0.5 +/- 0.1

5.2

2.8

3.2 +/- 0.3

Recommended Soldering Pad Layout

Dimensions in Millimeters.

Device Marking

Type

Code

A3A

Production

Year Code

(last digit)

Production

Month Code

Type Code

A SG75

B SG90

C SG150

D SG230

E SG300

F SG300Q

G SG350

H SG350Q

I SG400

J SG420

K SG420Q

L SG450Q

M SG500Q

N SG600Q

Month Code

A January

B February

C March

D April

E May

F June

G July

H August

I September

J October

K November

L December

1 2 3 4

SG Series 1
SG xxx Q 4

Comentários a estes Manuais

Sem comentários

Littelfuse SG Series Manual do Utilizador Página 3

Comentários a estes Manuais

Manuais e produtos relacionados com Hardware Littelfuse SG Series