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LTR10中文资料

Resistors

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High Power Chip Resistors

LTR10 (2012 size : 1 / 4W )

z Features

1) Improved welding strength

The structure of longer electrodes provides the wider welding area than the chip resistors with normal electrodes, and this enhanced the solder welding strength. 2) Increased surge-resistance

This is achieved by Rohm’s original trimming technology plus resistive element patterning. 3) High-power tolerance

Two times of the rated power is guaranteed than the normal-electrode resistors. 4) ROHM resistors are ISO-9001 & ISO/TS16949 certified.

Design and specifications are subject to change without notice. Carefully check the specification sheet before using or ordering it.

z Applications

Automotive, industrial and power supply .

z Ratings

0.25W (1 / 4W)

?55°C to + 155°C at 70°C

Item

Conditions

Specifications

Rated power

Rated voltage

Operating temperature

Nominal resistance See Table 1.

Limiting element voltage

150V

20406080

100?55070100155

AMBIENT TEMPERATURE (°C)

P O W E R L O A D (%)

Fig.1

The voltage rating is calculated by the following equation. If the value obtained exceeds the limiting element voltage, the voltage rating is equal to the maximum operating voltage.

E: Rated voltage (V)

P: Rated power (W)R: Nominal resistance (?)

E= P ×R

Power must be derated according to the power derating curve in Figure 1 when ambient temperature exceeds 70°C .

Resistors

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±200

Table 1

Resistance tolerance Resistance range

(?)

Resistance temperature coefficient

(ppm/°C)

J (±5%)

10 to 1M (E24)

±100±100

F (±1%)D (±0.5%)

z Before using components in circuits where they will be exposed to transients such as pulse loads (short–duration, high– level loads), be certain to evaluate the component in the mounted state. In addition, the reliability and performance of this component cannot be guaranteed if it is used with a steady state voltage that is greater than its rated voltage.

z Characteristics

Item

Test conditions (JIS C 5201-1)Resistor type

Guaranteed value Resistance

Variation of resistance with temperature Solderability

Damp heat, steady state

Endurance at 70°C

Endurance

Rapid change of temperature

Bend strength of the end face plating

Resistance to solvent

Resistance to soldering heat Overload

± (2.0%+0.1?)

± (1.0%+0.05?)

± (3.0%+0.1?)

J : ±5%F : ±1%D : ±0.5%See Table.1

No remarkable abnormality on the appearance.

A new uniform coating of minimum of 95% of the surface being immersed and no soldering damage.

Without mechanical damage such as breaks.

JIS C 5201-1 4.5

JIS C 5201-1 4.8

Measurement : ?55 / +25 / +125°C JIS C 5201-1 4.18

Soldering condition : 260±5°C Duration of immersion : 10±1s.JIS C 5201-1 4.2440°C, 93%RH

Test time : 1,000h to 1,048h ± (3.0%+0.1?)

± (3.0%+0.1?)

± (1.0%+0.05?)

± (1.0%+0.05?)± (1.0%+0.05?)

JIS C 5201-1 4.25.1

Rated voltage (current), 70°C 1.5h : ON ? 0.5h : OFF

Test time : 1,000h to 1,048h JIS C 5201-1 4.25.3155°C

Test time : 1,000h to 1,048h

JIS C 5201-1 4.29

23±5°C , Immersion cleaning, 5±0.5min.Solvent : 2-propanol JIS C 5201-1 4.19

Test temp. : ?55°C to +125°C 5cyc JIS C 5201-1 4.33

JIS C 5201-1 4.17

Rosin·Ethanol (25%WT)

Soldering condition : 235±5°C Duration of immersion : 2.0±0.5s.JIS C 5201-1 4.13

Rated voltage (current) ×2.5, 2s.Maximum overload voltage : 200V Static electric characteristics

± (5.0%+0.05?)

EIAJ ED-4701/300 Test method 304Voltage : 3kV C : 100pF R : 1.5k ?

Apply cycle : 1 time

Resistors

z Dimensions (Unit : mm)

LTR10中文资料

z Packaging

LTR10中文资料

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Resistors

z Part designation

LTR10中文资料

Reel (φ180mm) : Compatible with JEITA standard "EIAJ ET-7200B"

: Standard product

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LTR10中文资料

Appendix1-Rev2.0

Thank you for your accessing to ROHM product informations.

More detail product informations and catalogs are available, please contact your nearest sales office.

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Contact us : webmaster@rohm.co.jp

http://www.wendangku.net/doc/a65f555f3c1ec5da50e2705b.html

LTR10中文资料

Appendix