WF06A [WALSIN]

Reduced size of final equipment;


型号：	WF06A
厂家：	Walsin Technology
描述：	Reduced size of final equipment
文件：	总7页 (文件大小：247K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Approval sheet

WF06A 1 ~ 1Mohm

±5%, ±1%

High Power Chip Resistors

Size 0603 1/4W

*Contents in this sheet are subject to change without prior notice.

ASC_WF06A_V01 NOV - 2015

Page 1 of 7

Approval sheet

FEATURE

1. Small size and light weight

2. High reliability and stability

3. Reduced size of final equipment

4. High power

5. RoHS compliant and Lead free products

APPLICATION

ꢀ

High accuracy dc-power supply

Digital multi-meter

Telecommunication

Computer

Automotive industry

Medical and military equipment

DESCRIPTION

The resistors are constructed in a high grade ceramic body (aluminum oxide). Internal metal electrodes are

added at each end and connected by a resistive paste that is applied to the top surface of the substrate. The

composition of the paste is adjusted to give the approximate resistance required and the value is trimmed to

nominated value within tolerance which controlled by laser trimming of this resistive layer.

The resistive layer is covered with a protective coat. Finally, the two external end terminations are added. For

ease of soldering the outer layer of these end terminations is a Tin (lead free) alloy.

Fig 1. Construction of Chip-R

Page 2 of 7

ASC_WF06A_V01

NOV - 2015

Approval sheet

QUICK REFERENCE DATA

Item

Series No.

General Specification

WF06A

Size code

0603(1608)

Resistance Tolerance

Resistance Range

TCR (ppm/°C)

±5%, ±1%

1 ~ 1MΩ (E96+E24 series)

51 ~ 1Mohm: ≤ ± 100 ppm/°C

1 ~ 49.9ohm: +500 ~ -200 ppm/°C

1/4W

150V

Max. dissipation at T_amb=70°C

Max. Operation Voltage)

Max. Overload Voltage

300V

Climatic category (IEC 60068)

55/155/56

DIMENSIONS(unit : mm)

Part No

WF06A

1.60 ± 0.10

0.80 + 0.15/ -0.05

0.45 ± 0.15

510

0.30 ± 0.10

0.30 ± 0.20

MARKING

Each resistor is marked with a three-digit (E24) on the protective coating to designate the nominal resistance

value. No marking in the E96 series!

Page 3 of 7

ASC_WF06A_V01

NOV - 2015

Approval sheet

FUNCTIONAL DESCRIPTION

Product characterization

Standard values of nominal resistance are taken from the E96&E24 series for resistors with a tolerance of

±1%,±5%. The values of the E96/E24 series are in accordance with “IEC publication 60063”.

Derating

The power that the resistor can dissipate depends on the operating temperature; see Fig.2

MOUNTING

Due to their rectangular shapes and small tolerances, Surface Mountable Resistors are suitable for handling by

automatic placement systems.

Chip placement can be on ceramic substrates and printed-circuit boards (PCBs).

Electrical connection to the circuit is by individual soldering condition.

The end terminations guarantee a reliable contact.

SOLDERING CONDITION

The robust construction of chip resistors allows

them to be completely immersed in a solder bath

of 260°C for 10 seconds. Therefore, it is possible

to mount Surface Mount Resistors on one side of

a PCB and other discrete components on the

reverse (mixed PCBs).

Surface Mount Resistors are tested for

solderability at 235°C during 2 seconds. The test

condition for no leaching is 260°C for 30 seconds.

Typical examples of soldering processes that

provide reliable joints without any damage are

given in Fig 3.

Fig 3. Infrared soldering profile for Chip Resistors

Page 4 of 7

ASC_WF06A_V01

NOV - 2015

Approval sheet

CATALOGUE NUMBERS

The resistors have a catalogue number starting with .

WF06

510_

Resistance code

Size code

Type code

Tolerance

Packaging code

Termination code

WF06: 0603 A :Power

0603 size= 1/4W

5% E24:

: 7” Reeled taping

= Sn base

J : ±5%

2 significant digits followed by No.

of zeros

(lead free)

: ±1%

paper taping

5Kpcs/reel.

e.g.:

3ohm

=3R0

=100

=563

10ohm

56Kohm

1% E24+E96:

3 significant digits followed by No.

of zeros

100Ω

=1000

=3742

37.4KΩ

ꢁ

Reeled tape packaging : 8mm width paper taping 5000pcs per 7” reel.

Page 5 of 7

ASC_WF06A_V01

NOV - 2015

Approval sheet

TEST AND REQUIREMENTS

Basic specification : JIS C 5201-1 : 1998

REQUIREMENT

TEST

PROCEDURE

Clause 4.8

Natural resistance change per change in degree Refer to quick reference data for T.C.R

centigrade.

specification

Temperature

Coefficient of

Resistance (TCR )

R₂− R

×10⁶(ppm/°C)

(

t₂− t₁

)

R₁: Resistance at reference temperature

R₂: Resistance at test temperature

t₁: 20℃+5℃-1℃.

Clause 4.13

2.5 × Rated voltage or Max. Overload Voltage for 2

sec. Measure resistance after 30 minutes.

∆R/R max.:≦ ±(1%+0.05Ω)

Short time overload

Clause 4.18

Un-mounted

chips

completely

immersed

for No visible damage

Resistance to

soldering heat(R.S.H)

10±1second in a SAC solder bath at 260℃±5ºC.

∆R/R max. :≦ ±(1%+0.05Ω)

Clause 4.17

Un-mounted chips completely immersed for 2±0.5 Good tinning (>95% covered)

second in a SAC solder bath at 235℃±5℃.

Solderability

No visible damage

Clause 4.19

No visible damage

1. 30 minutes at -55°C±3°C,

2. 2~3 minutes at 20°C+5°C-1°C,

3. 30 minutes at +155°±3°C,

4. 2~3 minutes at 20°C+5°C-1°C,

Total 5 continuous cycles.

Temperature cycling

∆R/R max. ≦ ±(1%+0.05Ω)

Clause 4.25

1000 +48/-0 hours, loaded with RCWV or Vmax in No visible damage

chamber controller 70±2ºC, 1.5 hours on and 0.5

hours off.

Load life (endurance)

∆R/R max. ≦ ±(5%+0.1Ω)

Clause 4.24

1000 +48/-0 hours, loaded with RCWV or Vmax in No visible damage

humidity chamber controller at 40°C±2°C and 90~95%

relative humidity, continuous on.

Load life in Humidity

∆R/R max. ≦ ±(5%+0.1Ω)

No visible damage

Clause 4.33

Resistors mounted on a 90mm glass epoxy resin

PCB(FR4); bending : 3 mm, once for 10 seconds.

∆R/R max. ≦ ±(1%+0.05Ω)

Bending strength

Clause 4.32

Pressurizing force: 5N, Test time: 10±1sec.

No remarkable damage or removal of

the terminations

Adhesion

Clause 4.6

R≧1GΩ

Apply the insulation voltage 150Vdc for 1minute.

Insulation Resistance

Clause 4.7

Apply 1.42 times the insulation voltage for 1 minute.

No breakdown or flashover

Dielectric Withstand

Voltage

Page 6 of 7

ASC_WF06A_V01

NOV - 2015

Approval sheet

PACKAGING

Paper Tape specifications (unit :mm)

Series No.

WF06A

1.90±0.20

1.15±0.15

8.00±0.30

3.50±0.20

1.75±0.10

Series No.

WF06A

ΦD

+0.1

4.00±0.10

Φ1.50

Max. 0.80

−0.0

Reel dimensions

Symbol

(unit : mm)

13.0±0.2

9.0+1/-0

Φ178.0±2.0

Φ60.0±1.0

Page 7 of 7

ASC_WF06A_V01

NOV - 2015