WF12G226JBL [WALSIN]

Higher component and equipment reliability;


型号：	WF12G226JBL
厂家：	Walsin Technology
描述：	Higher component and equipment reliability
文件：	总7页 (文件大小：261K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Approval sheet

WF12G, WF08G, WF06G, WF04G

±1%, ±5%, 11MΩ~100MΩ

High ohm chip resistors

Size 1206, 0805, 0603, 0402

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

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Feb - 2015

Approval sheet

FEATURE

1. Small size and light weight

2. High reliability and stability

3. Reduced size of final equipment

4. Higher component and equipment reliability

5. RoHS compliant and lead free products.

APPLICATION

•

Power supply

PDA

Digital meter

Computer

Palmtop computers

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 Tin (lead free) alloy.

Fig 1. Construction of Chip-R

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Approval sheet

QUICK REFERENCE DATA

Item

Series No.

General Specification

WF12G

WF08G

0805 ( 2125 )

WF06G

WF04G

Size code

1206 ( 3216 )

0603 ( 1608 )

0402 ( 1005 )

Resistance Tolerance

±1%, ±5%

10MΩ < R ≤ 30MΩ

Resistance Range

10MΩ < R ≤ 100MΩ

( E24 series)

TCR (ppm/°C)

≤ ± 200 ppm/°C

1/8 W

≤ ± 300 ppm/°C

1/16W

1/4 W

200V

1/10 W

50V

Max. dissipation at T_amb=70°C

Max. Operation Voltage (DC or RMS)

Climatic category (IEC 60068)

150V

50V

55/155/56

Note :

This is the maximum voltage that may be continuously supplied to the resistor element, see “IEC publication

60115-8”

Max. Operation Voltage : So called RCWV (Rated Continuous Working Voltage) is determined by

RCWV = RatedPower ×Resistance Value or Max. RCWV listed above, whichever is lower.

DIMENSIONS(unit : mm)

WF12G

WF08G

WF06G

WF04G

series

3.10 ± 0.15

1.60 ± 0.15

0.50 ±0.25

0.50 ± 0.25

0.55 ± 0.10

2.00 ± 0.10

1.25 ± 0.10

0.40 ± 0.20

0.50 ± 0.15

1.60 ± 0.10

0.80 ± 0.10

0.30 ± 0.10

0.30 ± 0.15

0.45 ± 0.15

1.00 ± 0.05

0.50 ± 0.05

0.20 ± 0.10

0.25 ± 0.10

0.35 ± 0.05

MARKING

3-digits marking

Each resistor is marked with a three digits code on the protective coating to designate the nominal resistance

value.

Example

306 = 30 MΩ

186 = 18 MΩ

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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 E24/E96 series are in accordance with “IEC publication 60063”.

Derating

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

Figure 2. Maximum dissipation in percentage of rated power

As a function of the ambient temperature

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 below. WF04G is not guaranteed with wave soldering process due to its 0402 size.

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Approval sheet

CATALOGUE NUMBERS

The resistors have a catalogue number starting with :

WF06

226_

Size code

Type code

Resistance code

Tolerance Packaging code

Termination code

WF12 : 1206

WF08 : 0805

WF06 : 0603

WF04 : 0402

: 7” Reeled taping

: Bulk

5% E24: 2 significant digits

followed by no. of zeros

and a blank

= Sn base (lead

free)

G : High ohmic >10MΩ

1206 size=0.25W

J : ±5%

F : ±1%

0805 size=0.125W

0603 size=0.10W

11MΩ

22MΩ

30MΩ

=116_

=226_

=306_

(“_” means a blank)

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 for 1206, 0805, 0603 ( 10,000pcs for 0402 )

Bulk packaging : 5000pcs per polybag

TEST AND REQUIREMENTS(JIS C 5201-1 : 1998)

TEST

PROCEDURE

Natural resistance change per change in degree centigrade.

R₂− R

REQUIREMENT

Temperature

Coefficient of

Resistance (T.C.R)

Refer to quick reference data for

T.C.R specification.

×10⁶(ppm/°C)

(

t₂− t₁

)

Clause 4.8

R₁: Resistance at reference temperature

R₂: Resistance at test temperature

t₁: 20°C+5°C-1°C

t₂: Test temperature.

Short time overload Permanent resistance change after a 5 second application of a No visible damage.

(S.T.O.L)

voltage 2.5xU_Ror max. Overload voltage, whichever is less.

∆R/R max. J:≦ ±(2%+0.1Ω)

F:≦ ±(1%+0.05Ω)

Clause 4.13

Un-mounted chips completely immersed for 2±0.5 second in a SAC

solder bath at 235℃±5℃.

good tinning (>95% covered)

no visible damage

Solderability

Clause 4.17

Un-mounted chips completely immersed for 10±1second in a SAC

solder bath at 260℃±5ºC

No visible damage.

Resistance to

soldering

heat(R.S.H)

∆R/R max. J:≦ ±(1%+0.1Ω)

F:≦ ±(0.5%+0.05Ω)

Clause 4.18

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Approval sheet

TEST

PROCEDURE

1. 30 minutes at -55°C±3°C,

REQUIREMENT

No visible damage.

Temperature cycling

∆R/R max. J≦ ±(1%+0.1Ω)

F≦ ±(0.5%+0.05Ω)

Clause 4.19

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.

Load life

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

(endurance)

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

∆R/R max. J≦ ±(3%+0.1Ω)

F≦ ±(1%+0.05Ω)

Clause 4.25

Load life in Humidity 1000 +48/-0 hours, loaded with RCWV or Vmax in humidity chamber No visible damage.

controller at 40°C±2°C and 90~95% relative humidity, 1.5hours on

and 0.5 hours off

Clause 4.24

∆R/R max. J≦ ±(3%+0.1Ω)

F≦ ±(1%+0.05Ω)

Bending strength

Clause 4.33

Adhesion

Resistors mounted on a 90mm glass epoxy resin PCB(FR4);

bending : 3 mm, once for 10 seconds

∆R/R max. ±(1%+0.10Ω)

No remarkable damage or

removal of the terminations.

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

Clause 4.32

Insulation Resistance

Apply the maximum overload voltage (DC) for 1minute

Apply the maximum overload voltage (AC) for 1 minute

R≧10GΩ

Clause 4.6

Dielectric Withstand

Voltage

No breakdown or flashover

Clause 4.7

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Approval sheet

PACKAGING

Paper Tape specifications (unit :mm)

Series No.

WF12G

3.60±0.20

2.40±0.20

1.90±0.20

1.20±0.10

2.00±0.20

1.65±0.20

1.10±0.20

0.70±0.10

8.00±0.30

3.50±0.2

1.75±0.10

WF08G

WF06G

WF04G

Series No.

ΦD

WF12G

WF08G

WF06G

WF04G

4.00±0.10

2.00±0.10

4.00±0.10

Max. 1.0

+0.1

−0.0

Φ1.50

0.65±0.1

0.40±0.05

Reel dimensions

Symbol

(unit : mm)

13.0±0.2

9.0±0.5

Φ178.0±2.0

Φ60.0±1.0

Taping quantity

Chip resistors 5,000 pcs/reel for 1206, 0805, 0603 ( 10,000 pcs/reel for 0402 )

Page 7 of 7

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Feb - 2015

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