LTR18 [ROHM]

High Power Chip Resistors; 高功率贴片电阻\u003c宽屏终端类型\u003e


型号：	LTR18
厂家：	ROHM
描述：	High Power Chip Resistors 高功率贴片电阻\u003c宽屏终端类型\u003e
文件：	总5页 (文件大小：92K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

LTR18

Resistors

High Power Chip Resistors<Wide Terminal type>

LTR18 (3216 size : 1 / 2W)

zFeatures

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.

zApplications

Automotive, industrial and power supply.

zRatings

Item

Conditions

Specifications

0.5W (1 / 2W)

Rated power

Power must be derated according to the power derating curve in

Figure 1 when ambient temperature exceeds 70°C.

at 70°C

100

−55

100

155

AMBIENT TEMPERATURE (°C)

Fig.1

Rated voltage

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)

E= P×R

R: Nominal resistance (Ω)

Limiting element voltage

200V

Nominal resistance

See Table 1.

Operating temperature

−55°C to + 155°

D( 0.5%) F( 1%) J( 5%)

1/4

LTR18

Resistors

Table 1

Resistance range

Resistance temperature coefficient

Resistance tolerance

(Ω)

(ppm/°C)

( 0.5%)

( 1%)

100

200

10 to 1M (E24)

( 5%)

zBefore 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.

Characteristics

Guaranteed value

Resistor type

Item

Test conditions (JIS C 5201-1)

JIS C 5201-1 4.5

J : 5%

F : 1%

D : 0.5%

Resistance

Variation of resistance

with temperature

JIS C 5201-1 4.8

Measurement : −55 / +25 / +125°C

See Table.1

JIS C 5201-1 4.13

Rated voltage (current) ×2.5, 2s.

Maximum overload voltage : 200V

Overload

(2.0%+0.1Ω)

A new uniform coating of minimum of

95% of the surface being immersed

and no soldering damage.

JIS C 5201-1 4.17

Rosin·Ethanol (25%WT)

Soldering condition : 235 5°C

Duration of immersion : 2.0 0.5s.

Solderability

(1.0%+0.05Ω)

No remarkable abnormality on the appearance.

JIS C 5201-1 4.18

Soldering condition : 260 5°C

Duration of immersion : 10 1s.

Resistance to

soldering heat

(1.0%+0.05Ω)

(3.0%+0.1Ω)

JIS C 5201-1 4.19

Test temp. : −55°C to +125°C 5cyc

Rapid change of

temperature

JIS C 5201-1 4.24

40°C, 93%RH

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

Damp heat, steady state

(3.0%+0.1Ω)

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

Endurance at 70°C

(3.0%+0.1Ω)

(1.0%+0.05Ω)

JIS C 5201-1 4.25.3

155°C

Endurance

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

JIS C 5201-1 4.29

23 5°C, Immersion cleaning, 5 0.5min.

Solvent : 2-propanol

Resistance to solvent

(1.0%+0.05Ω)

Without mechanical damage such as breaks.

JIS C 5201-1 4.33

Bend strength of

the end face plating

EIAJ ED-4701/300 Test method 304

Voltage : 3kv

C : 100pF

R : 1.5kΩ

Apply cycle : 1 time

Static electric

characteristics

(5.0%+0.05Ω)

2/4

LTR18

Resistors

zDimensions (Unit : mm)

①

⑥

0.30±0.25

②

③

No.

Material

0.50±0.25

Resistive element

(Oxide metal thick film)

④

1.60±0.15

⑤

Silver thick film electrode

Nickel electrode

Sn electrode

Alumina substrate

Overcoating (Resin)

3.20±0.15

Packaging

Reel

Taping

φD0

Heat crimp cover/Tape

Thick paper (Underside paper tape) Chip resistor Square punchout hole

mount

Label

EIAJ ET-7200B compliant

(Unit: mm)

+0.2

−0.1

+0.2

−0.1

8.0±0.3

3.5±0.05

1.75±0.1

1.65

2.4

−1.5

+1.0

φ180

φ60

φ13 0.2

+0.1

4.0±0.1

2.0±0.05

Max. 1.1

φ1.5

3/4

LTR18

Resistors

zPart designation

L T R 1 8 E Z P

Resistance tolerance

Nominal resistance

Resistance code, 3 or 4 digits.

Part No.

Resistance

tolerance

Resistance

code

0.5%

3 digits

4 digits

Packaging Specifications Code

Resistance tolerance

D( 0.5%) F( 1%) J( 5%)

Basic ordering unit

(pcs)

Part No.

Code

Packaging specifications

Paper tape (4mm Pitch)

Reel

φ180mm (7inch)

LTR18

EZP

5,000

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

: Standard product

4/4

Appendix

Notes

No technical content pages of this document may be reproduced in any form or transmitted by any

means without prior permission of ROHM CO.,LTD.

The contents described herein are subject to change without notice. The specifications for the

product described in this document are for reference only. Upon actual use, therefore, please request

that specifications to be separately delivered.

Application circuit diagrams and circuit constants contained herein are shown as examples of standard

use and operation. Please pay careful attention to the peripheral conditions when designing circuits

and deciding upon circuit constants in the set.

Any data, including, but not limited to application circuit diagrams information, described herein

are intended only as illustrations of such devices and not as the specifications for such devices. ROHM

CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any

third party's intellectual property rights or other proprietary rights, and further, assumes no liability of

whatsoever nature in the event of any such infringement, or arising from or connected with or related

to the use of such devices.

Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or

otherwise dispose of the same, no express or implied right or license to practice or commercially

exploit any intellectual property rights or other proprietary rights owned or controlled by

ROHM CO., LTD. is granted to any such buyer.

Products listed in this document are no antiradiation design.

The products listed in this document are designed to be used with ordinary electronic equipment or devices

(such as audio visual equipment, office-automation equipment, communications devices, electrical

appliances and electronic toys).

Should you intend to use these products with equipment or devices which require an extremely high level

of reliability and the malfunction of which would directly endanger human life (such as medical

instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers

and other safety devices), please be sure to consult with our sales representative in advance.

It is our top priority to supply products with the utmost quality and reliability. However, there is always a chance

of failure due to unexpected factors. Therefore, please take into account the derating characteristics and allow

for sufficient safety features, such as extra margin, anti-flammability, and fail-safe measures when designing in

order to prevent possible accidents that may result in bodily harm or fire caused by component failure. ROHM

cannot be held responsible for any damages arising from the use of the products under conditions out of the

range of the specifications or due to non-compliance with the NOTES specified in this catalog.

Thank you for your accessing to ROHM product informations.

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

THE AMERICAS / EUPOPE / ASIA / JAPAN

ROHM Customer Support System

www.rohm.com

TEL : +81-75-311-2121

FAX : +81-75-315-0172

21, Saiin Mizosaki-cho, Ukyo-ku, Kyoto 615-8585, Japan

Appendix1-Rev2.0

LTR18 [ROHM]

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