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SF25U1203FTLA

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品牌：WALSIN

描述：Anti-Sulfuration Thin Film Chip Resistor /SF.A Series 120000Ω, ±1%, ≦±25, 3/4W

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SF25U1203FTLA 概述

Anti-Sulfuration Thin Film Chip Resistor /SF.A Series 120000Ω, ±1%, ≦±25, 3/4W

SF25U1203FTLA 数据手册

通过下载SF25U1203FTLA数据手册来全面了解它。这个PDF文档包含了所有必要的细节，如产品概述、功能特性、引脚定义、引脚排列图等信息。

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Approval Sheet

SF25T&U_A, SF20T&U_A, SF10T&U_A,

SF12T&U_A, SF08T&U_A, SF06T&U_A,

SF04T&U_A

±1.0%, ±0.5%, ±0.25%, ±0.1%, ±0.05%

TC50 , TC25

High Precision Thin Film chip resistors

Size: 2512,2010,1210,1206,0805,0603,0402

(Anti-Sulfuration )

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

Page 1 of 9

ASC_SFxxT&U_A

MAY - 2018

Approval Sheet

FEATURE

1. SMD metal film resistor

2. High reliability and stability of 0.25% and below per customer request

3. High performance of TCR: 50&25 ppm/K and below per customer request

4. Low current noise

5. Sulfuration resistant Oil 105’C +3.5% Sulfur powder x 500hrs

6. RoHS compliant and Lead free products

APPLICATION

•

Medical equipment

Measuring instrument

Communication device

Computer

Printer

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 layer that is applied to the top surface of the substrate. The

composition of the resistive layer 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

environmental soldering issue, the outer layer of these end terminations is a Lead-free solder .

Fig 1. Construction of Chip-R SFxxT&U

Page 2 of 9

ASC_SFxxT&U_A

MAY - 2018

Approval Sheet

QUICK REFERENCE DATA

Item

General Specification

SF25T&U

SF20T&U

SF10T&U

SF12T&U

SF08T&U

SF06T&U

SF04T&U

Series No.

Size Code

2512

(6432)

2010

1210

(3225)

1206

0805

(2012)

0603

0402

(1005)

(5025)

(3216)

(1608)

Resistance Tolerance

Resistance Range

±1.0%, ±0.5%, ±0.25%, ±0.1%, ±0.05%

4.7Ω ~

3MΩ

4.7Ω ~

2.5MΩ

1Ω ~

2.5MΩ

4.7Ω ~

2MΩ

4.7Ω ~

1MΩ

10Ω ~

255KΩ

1Ω ~ 3MΩ

TCR

± 50&25 ppm/°C

Max. Dissipation at

3/4W

1/2W

1/4W

1/8W

1/10W

1/16W

T_amb=70°C

Max. Operating Voltage

Max. Overload Voltage

200V

400V

200V

400V

200V

400V

200V

400V

100V

200V

50V

100V

Operating Temperature

Range

- 55~ +155°C

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.

Tolerance : ±0.01% is upon requested

DIMENSIONS: (unit:mm)

SF25

SF20

SF10

SF12

SF08

SF06

SF04

Type

6.35 ± 0.10

3.20 ± 0.15

0.60 ± 0.20

0.90 ± 0.25

0.55 ± 0.10

5.00 ± 0.10

2.50 ± 0.15

0.60 ± 0.20

0.60 ± 0.25

0.55 ± 0.10

3.10 ± 0.10

2.60 ± 0.15

0.50 ± 0.20

0.55 ± 0.10

3.05 ± 0.15

1.55 ± 0.15

0.40 ± 0.20

0.55 ± 0.15

2.00 ± 0.10

1.25 ± 0.10

0.25 ± 0.20

0.40 ± 0.20

0.50 ± 0.15

1.55 ± 0.10

0.80 ± 0.10

0.30 ± 0.15

0.45 ± 0.15

1.00 ± 0.10

0.50 ± 0.05

0.30 ± 0.15

0.35 ± 0.05

Protective coat

End termination

Resistive layer

Ceramic Substrate

1001

Page 3 of 9

ASC_SFxxT&U_A

MAY - 2018

Approval Sheet

MARKING

3-digits marking for 0603 size

SFxxT&U has same marking rule as WRxx ±1%.

3-digits marking（±1% : 0603）

Nominal resistance

Description

1.E-24 series

2.E-96 series

As 0603 WR06X ±5%.

The 1st two digit codes are referring to the CODE on the table, the 3rd code is the index of resistance

value :

Y=10^-2，X=10^-1，A=10⁰，B=10¹，C=10²，D=10³，E=10⁴，F=10⁵

EX :

17.8Ω=25X，178Ω=25A，1K78 =25B

17K8=25C，178K=25D，1M78=25E

3. Remark

There is no marking for the items are not under E-24 and E-96 series

CODE R_value CODE R_value CODE R_Value CODE R_value CODE R_value CODE R_value CODE R_value CODE R_value

100

102

105

107

110

113

115

118

121

124

127

130

133

137

140

143

147

150

154

158

162

165

169

174

178

182

187

191

196

200

205

210

215

221

226

232

237

243

249

255

261

267

274

280

287

294

301

309

316

324

332

340

348

357

365

374

383

392

402

412

422

432

442

453

464

475

487

499

511

523

536

549

562

576

590

604

619

634

649

665

681

698

715

732

750

768

787

806

825

845

866

887

909

931

953

976

4-digits marking for 2512, 2010, 1210, 1206, 0805 size

For E24+E96, each resistor is marked with a four digits code on the protective coating to designate the

nominal resistance value. For values below 97Ω6 the R is used as a digit. For values of 100Ω or greater, the

first 3 digits are significant, the fourth digit indicates the number of multiple to follow.

Example

RESISTANCE

10Ω

12Ω

100Ω

6800Ω

47000Ω

10R0

12R0

1000

6801

4702

4-digits marking

No marking code for 0402 size

Page 4 of 9

ASC_SFxxT&U_A

MAY - 2018

Approval Sheet

FUNCTIONAL DESCRIPTION

Product characterization

Standard values of nominal resistance are taken from the E192 & E24 series for resistors with a tolerance of

±0.5%, ±0.25%, ±0.1%. The values of the E24/E192series 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.

Page 5 of 9

ASC_SFxxT&U_A

MAY - 2018

Approval Sheet

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 within lead-free solder bath. 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. and Table 1.

Fig. 3 Infrared soldering profile for Chip Resistors

Table 1. Infrared soldering condition for Chip Resistors

Temperature Condition

Average ramp-up rate (217°C to 260°C)

Between 150 and 200°C

> 217°C

Exposure Time

Less than 3°C/second

Between 60-120 seconds

Between 60-150 seconds

260ºC +0/-5°C

Peak Temperature

Min. 30 seconds

Time within 245°C

Ramp-down rate (Peak to 217°C)

Time from 25°C to Peak

Less than 6°C/second

No greater than 480 seconds

Page 6 of 9

ASC_SFxxT&U_A

MAY - 2018

Approval Sheet

CATALOGUES NUMBERS

The resistors have a catalogue number starting with .

SF04

T/U

xxxx

Resistance code

E96+E24:

Special Code

Size code

SF25: 2512

SF20: 2010

SF10: 1210

SF12: 1206

SF08: 0805

SF06: 0603

SF04: 0402

Type code

Tolerance

F : ±1.0%

D : ±0.5%

C: ±0.25%

B : ±0.1%

A : ±0.05%

Packaging Termination

code code

T: TCR=50ppm

U: TCR=25ppm

T: Taped & L= Sn base

Reeled (lead free)

A = Anti sulfur

Under Oil

105’C+3.5%

3 significant digits followed

by no. of zeros

Sulfur powder500hrs

102Ω

37.4KΩ =3742

220Ω =2200

=1020

* Anti-Sulfur test conditions: Oil 105’C, 3.5% Sulfur powder, 500hrs, acceptance criteria: +/-1.0%

1. Reeled tape packaging: 8mm width paper taping.

5,000pcs/reel for SF10, SF12, SF08, SF06

10,000pcs/reel for SF04

2. Reeled tape packaging: 12mm width paper taping

4,000pcs/reel for SF25, SF20

Page 7 of 9

ASC_SFxxT&U_A

MAY - 2018

Approval Sheet

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

REQUIREMENT

TEST

PROCEDURE

Resistor

DC resistance

DC resistance values measured at the test voltages specified below :

Within the specified tolerance

Clause 4.5

Natural resistance change per change in degree centigrade.

R₂− R

×10⁶(ppm/°C)

Temperature Coefficient

of Resistance(T.C.R)

(

t₂− t₁

)

Refer

“QUICK REFERENCE DATA”

R₁: Resistance at reference temperature

R₂: Resistance at test temperature

t₁: 20°C+5°C-1°C

Clause 4.8

Short

time

overload

Permanent resistance change after a 5second application of a voltage

(S.T.O.L)

2.5 times RCWV or the maximum overload voltage specified in the ∆R/R max. ±(0.1%+0.05Ω)

above list, whichever is less.

Clause 4.13

Resistance to soldering

heat(R.S.H)

Clause 4.18

no visible damage

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

solder bath at 260℃±5ºC

∆ R/R max. ±(0.1%+0.05Ω)

good tinning (>95% covered)

Solder ability

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

solder bath at 235℃±5℃

no visible damage

Clause 4.17

30 minutes at -55°C±3°C, 2~3 minutes at 20°C+5°C/-1°C, 30 minutes

at +125°C±3°C, 2~3 minutes at 20°C+5°C/-1°C, total 5 continuous

cycles

no visible damage

Temperature cycling

Clause 4.19

∆R/R max. ±(0.25%+0.05Ω)

Load life (endurance)

1000 +48/-0 hours, loaded with RCWV or Vmax in chamber controller

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

∆R/R max. ±(0.25%+0.05Ω)

∆R/R max. ±(0.1%+0.05Ω)

Clause 4.25

1000 +48/-0 hours, loaded with RCWV or Vmax in humidity chamber

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

0.5 hours off

Load life in Humidity

Clause 4.24

Bending strength

Clause 4.33

Adhision

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

3 mm, once for 10 seconds.

No remarkable damage or

removal of the terminations.

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

Clause 4.32

Insulation Resistance

R≧10GΩ

Apply the maximum overload voltage (DC) for 1minute

Clause 4.6

Dielectric

Withstand

Voltage

Apply the maximum overload voltage (AC) for 1 minute

No breakdown or flashover

∆R/R max. ±(1%+0.1Ω)

Clause 4.7

Soaked in industrial oil with 3.5% Sulfur concentration 105°C ± 3°C,

500 hours

Sulfuration Test

Page 8 of 9

ASC_SFxxT&U_A

MAY - 2018

Approval Sheet

PACKAGING

Paper Tape specifications (unit :mm)

Series No.

SF25

6.90±0.20

5.50±0.20

3.60±0.20

2.40±0.20

1.90±0.20

1.20±0.10

3.60±0.20

2.80±0.20

2.00±0.20

3.00±0.20

1.65±0.20

1.10±0.20

0.7±0.10

12.00±0.30

8.00±0.30

8.00±0.20

5.50±0.10

3.50±0.20

3.50±0.05

1.75±0.10

SF20

SF12

SF10

SF08

SF06

SF04

Series No.

SF12

ΦD

+0.1

4.00±0.10

Max. 1.0

Φ1.50

−0.0

+0.1

SF25

SF20

SF10

SF08

SF06

4.00±0.10

Max 1.2

Max. 1.0

0.65±0.05

Φ1.50

−0.0

+0.1

−0.0

Φ1.50

+0.1

−0.0

Φ1.50

+0.1

−0.0

Φ1.50

+0.1

−0.0

Φ1.50

+0.1

−0.0

2.00±0.10

4.00±0.10

0.40±0.05

SF04

Φ1.50

Page 9 of 9

ASC_SFxxT&U_A

MAY - 2018

Approval Sheet

Reel dimensions

SF25 , SF20

Symbol

(unit : mm)

13.0±0.2

14.0±0.5

Φ178.0±2.0

Φ60.0±1.0

SF12 , SF10 , SF08 , SF06 , SF04

Symbol

(unit : mm)

13.0±0.2

9.0±0.5

Φ178.0±2.0

Φ60.0±1.0

SF02

Symbol

+0.0

−1.5

+0.0

−1.5

+1.0

−0.0

13.0±0.2

(unit : mm)

Φ180

Φ60

Φ9

Taping quantity

Chip resistors 4,000 pcs per reel ( SF25, SF20 )

Chip resistors 5,000 pcs per reel ( SF10, SF12, SF08, SF06 )

Chip resistors 10,000 pcs per reel ( SF04 )

Page 10 of 9

ASC_SFxxT&U_A

MAY - 2018

SF25U1203FTLA 相关器件

型号	制造商	描述	价格	文档
SF25U1203FTLQ	WALSIN	Anti-Sulfuration & AEC-Q200 Thin Film Chip Resistor /SF.Q Series 120000Ω, ±1%, ≦±25, 3/4W	获取价格
SF25U1204ATL	WALSIN	Anti-Sulfuration Thin Film Chip Resistor /SF Series 1200000Ω, ±0.05%, ≦±25, 3/4W	获取价格
SF25U1204ATLA	WALSIN	Anti-Sulfuration Thin Film Chip Resistor /SF.A Series 1200000Ω, ±0.05%, ≦±25, 3/4W	获取价格
SF25U1204ATLQ	WALSIN	Anti-Sulfuration & AEC-Q200 Thin Film Chip Resistor /SF.Q Series 1200000Ω, ±0.05%, ≦±25, 3/4W	获取价格
SF25U1204BTL	WALSIN	Anti-Sulfuration Thin Film Chip Resistor /SF Series 1200000Ω, ±0.1%, ≦±25, 3/4W	获取价格
SF25U1204BTLA	WALSIN	Anti-Sulfuration Thin Film Chip Resistor /SF.A Series 1200000Ω, ±0.1%, ≦±25, 3/4W	获取价格
SF25U1204BTLQ	WALSIN	Anti-Sulfuration & AEC-Q200 Thin Film Chip Resistor /SF.Q Series 1200000Ω, ±0.1%, ≦±25, 3/4W	获取价格
SF25U1204CTL	WALSIN	Anti-Sulfuration Thin Film Chip Resistor /SF Series 1200000Ω, ±0.25%, ≦±25, 3/4W	获取价格
SF25U1204CTLA	WALSIN	Anti-Sulfuration Thin Film Chip Resistor /SF.A Series 1200000Ω, ±0.25%, ≦±25, 3/4W	获取价格
SF25U1204CTLQ	WALSIN	Anti-Sulfuration & AEC-Q200 Thin Film Chip Resistor /SF.Q Series 1200000Ω, ±0.25%, ≦±25, 3/4W	获取价格