BSR1100FE [TTELEC]

Thick Film 2512 Surge Resistors; 厚膜2512浪涌电阻器


型号：	BSR1100FE
厂家：	TT Electronics
描述：	Thick Film 2512 Surge Resistors 厚膜2512浪涌电阻器电阻器
文件：	总4页 (文件大小：167K)
中文：	中文翻译
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MODEL BSR SERIES

Thick Film

NEW PRODUCT

2512 Surge Resistors

FEATURES

• 1.2/50 microsecond 250V pulse

• 10/700 microsecond 250V pulse

• Nickel barrier terminations

• Double glass passivation

APPLICATIONS

For these reasons the degree of protection is much less

than for equipment connected outside the building

where the risk increases dramatically.

Telephone lines are often subject to a variety of voltage

disturbances which fall into two main categories -

short duration, high voltage transients caused by

lightning strikes and longer duration, over voltages

which may be caused by direct connection to main

power lines. The advent of electronic switching has

meant that sophisticated methods of protection against

these two fault conditions has to be incorporated to

ensure that potential damage is limited.

BI Technologies is involved in secondary protection for

all types of environment. The BSR Series has been

specifically designed for PABX where cost is of

paramount importance. For central switches, the tip

and ring resistors are expected to perform identically to

maintain the correct resistance for a balanced line

system. Both resistors are therefore generally

produced on a common substrate, which may be

through hole or surface mount, and perform close to

one another under all foreseeable fault conditions in

both common and differential modes. For PABX,

tracking is not required because an individual resistor

is used which normally runs at low power yet has the

ability to withstand considerable power for long

periods and has good characteristics under high

voltage transient conditions.

The two types of protection are: primary, which

attempts to deal with the bulk of the energy from a fast

transient, particularly lightning strikes and power

crosses and secondary, which provides a further level

of protection to prevent damage to sensitive electronic

circuits.

The possibility of disturbances in the line is dependent

on the environment of the equipment installation. In

the case of a PABX, where the telephone line, terminal

equipment and the line interface are all installed in the

same building, the possibility of induced lightning

transients is greatly reduced and the opportunity for

damage induced by direct connection to mains is low.

The BSR Series is a surface mount chip resistor

in a standard 2512 package which utilizes special

resistor film to handle the high voltage with

Contact factory for custom surge resistors meeting

Bellcore testing conditions.

Speciﬁcations subject to change without notice.

Continued . . .

5-7

Model BSR Series

APPLICATIONS

The BSR Series is manufactured in BI’s highly

automated production facility in Glenrothes, Scotland,

which also produces standard 2512 chip resistors and

a wide range of chip resistor networks, R/C networks

as well as gull wing 14 and 16 lead resistor networks,

all of which are used on the PABX line card and in

many other areas of electronics.

sophisticated laser trimming to prevent ﬂash over. In

the event of a very high voltage pulse the resistor will

go open-circuit preventing damage to surrounding

components or the printed circuit board. Two units are

required for each incoming line to protect both tip and

ring individually and collectively. The resistor is made

from nonﬂammable material.

ELECTRICAL

Surge Capability, Max.

1.2 / 50 µs, 250 V; 10 / 700 µs, 250 V (∆R ±5%+0.1Ω)

0.05 to 10000 Ohms

Standard Resistance Range, Ohms

Standard Resistance Tolerances

±5%, ±10%, ±20% Optional : ±1%, ±2%

-55°C to +125°C

Operating Temperature Range

Temperature Coefﬁcient of Resistance, Max.

Power Ratings, Watts, at 70°C (See Note )

Operating Voltage, Max.

±100ppm/°C above 10 Ohms

1 and 2

100 V dc or √PR whichever is less

Note : For 2 watts limit part temperature to +155° C

ENVIRONMENTAL

Short Time Overload, Max.

Temperature Cycling

Moisture Resistance

Load Life

2.5 x rated voltage (∆R ±1%+0.1 Ω)

-55°C to +125°C, 5 cycles (∆R ±5%+0.1 Ω)

1,000 hours at 40°C, 95% RH (∆R ±3%+0.1 Ω)

1,000 hours at 70°C + Rated Voltage, Max. (∆R ±3%+0.1 Ω)

260°C for 10 sec. (∆R ±5%+0.1 Ω)

Resistance to Solder Heat

CONSTRUCTION

Glass Passivation:

Glass Protective

Coating

Resistor:

Ruthenium Oxide

90/10 Tin-Lead

Solder Plating

Nickel Barrier

Substrate:

Thick Film Conductor

Alumina

5-8

Model BSR Series

SURGE WAVEFORM DEFINITION

Impulse Wave

Bellcore GR 1089

0.9P

Example: 10 x 700µ sec. wave form definition

A: Front Time (T -T ) = 10µ sec.

B: Duration (T -T ) = 700µ sec.

0.5P

0.1P

b T

Note:

Higher pulse capability can be achieved

with untrimmed resistors

OUTLINE DIMENSIONS (Inch/mm)

Typical Part Marking

(Resistance Code 100)

.126±.008

3.20±2.0

100

.028±.008

.70±2.0

(2 Places)

.248±.008

6.30±2.0

.023±.004

.60±1.0

.028±.008

.70±2.0

.028±.008

.70±2.0

5-9

Model BSR Series

PACKAGING (Inch/mm)

.827±.031

21.0±0.79

+.004

.512±.020

13.0±0.50

.059

Dia.

-.000

+0.10

-0.00

.157±.004

4.00±0.10

Dia.

1.50

.079±.002

2.01±0.05

+0.04

- 0.00

+1.00

- 0.00

2.36

59.9

Dia.

.157±.004

4.00±0.10

.079±.020

2.01±0.50

+0.00

- 0.12

+0.00

- 3.05

7.09

.354±.012

8.99±0.30

Dia.

Upper-Surface

Covering Tape

.039

.991

Max.

180.1

Label:

.449±.039

11.4±.991

Includes Part Number,

Lot Number and Quantity

.016

0.41

Cavity For Resistor

Max.

7" Reel Diameter - 4K Per Reel

Dim. A

Dim. B

Dim. C

Dim. E

Dim. D

.138±.004 .266±.004 .472±.008

3.51±0.10 6.76±0.10 11.99±0.20

.069±.004

1.75±0.10

.217±.002

5.51±0.05

ORDERING INFORMATION

BSR

120

Model Series

Power Rating

Packaging:

E = Embossed Tape

Tolerance Code:

F = ±1% Tol.

G = ±2% Tol.

J = ±5% Tol.

K = ±10% Tol.

M = ±20% Tol.

Resistance Code:

0.050 Ohms : R050

1 Ohm : 1R0

10 Ohms and above

First two digits are significant.

Third digit denotes number of trailing zeroes.

Model BSR Series

5-10

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