BSR2R62FE datasheet, PDF - EEWORLD Datasheet

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BSR2R62FE: DescriptionRESISTOR, METAL GLAZE/THICK FILM, 2W, 1%, 100ppm, 0.62ohm, SURFACE MOUNT, 2512, CHIP; CategoryPassive components The resistor; File Size148KB，4 Pages; ManufacturerTT Electronics

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BSR2R62FE Overview

RESISTOR, METAL GLAZE/THICK FILM, 2W, 1%, 100ppm, 0.62ohm, SURFACE MOUNT, 2512, CHIP

BSR2R62FE Parametric

Parameter Name	Attribute value
Objectid	1244855552
package instruction	, 2512
Reach Compliance Code	unknown
ECCN code	EAR99
YTEOL	0
Other features	FLAME PROOF, LASER TRIMMABLE
JESD-609 code	e3
Manufacturer's serial number	BSR
Installation features	SURFACE MOUNT
Number of terminals	2
Maximum operating temperature	155 °C
Minimum operating temperature	-55 °C
Package shape	RECTANGULAR PACKAGE
method of packing	TR, EMBOSSED
Rated power dissipation(P)	2 W
Rated temperature	70 °C
resistance	0.62 Ω
Resistor type	FIXED RESISTOR
size code	2512
surface mount	YES
technology	METAL GLAZE/THICK FILM
Temperature Coefficient	100 ppm/°C
Terminal surface	TIN OVER NICKEL
Terminal shape	WRAPAROUND
Tolerance	1%
Operating Voltage	100 V

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Thick Film

2512 Surge Resistors

BSR Series

1.2/50 microsecond 250V pulse

10/700 microsecond 250V pulse

Nickel barrier terminations

Double glass passivation

Applications

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 mains 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.

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 envi-

ronment 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. For these reasons the degree of

protection is much less than for equipment connected outside the

building where the risk increases dramatically.

BI Technologies is involved in secondary protection for

all types of environment. The BSR Series has been specifically de-

signed 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 BSR Series is a surface mount chip resistor in a standard 2512

package which utilizes special resistor film to handle the high voltage

with sophisticated laser trimming to prevent flash over. In the event

of a very high voltage pulse the resistor will go open-circuit prevent-

ing 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 nonflam-

mable material.

Electrical

Surge Capability, Max.

Standard Resistance Range, Ohms

Standard Resistance Tolerances

Operating Temperature Range

Temperature Coefficient of Resistance, Max.

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

Operating Voltage, Max.

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

S1.2 / 50 μs, 250 V; 10 / 700 μs, 250 V (ΔR ±5%+0.1Ω)

0.05 to 10K Ohms

±5%, ±10%, ±20% Optional : ±1%, ±2%

-55°C to +125°C

±100ppm/°C above 10 Ohms

1 and 2

100 V dc or

√PR

whichever is less

General Note

TT electronics reserves the right to make changes in product specification without notice or liability.

All information is subject to TT electronics’ own data and is considered accurate at time of going to print.

www.bitechnologies.com www.irctt.com www.welwyn-tt.com

03.12

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