Datasheet > VSMF1206673R00TCR2CBW

VSMF1206673R00TCR2CBW

更新时间： 2024-09-26 06:56:19

品牌	Logo	应用领域
威世 - VISHAY		/
页数	文件大小	规格书
6页	1420K
描述
Fixed Resistor, Metal Foil, 0.15W, 673ohm, 0.25% +/-Tol, -2,2ppm/Cel, 1206,

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VSMF Series (1206, 2010, 2512)

Vishay Foil Resistors

TheFirstHighPercisionBulkMetal®FoilSurface-MountChipResistorwithFlexibleTerminationsC,TRof2ppm/°CandLoadLfei Stablityof0.01%(100ppm)

The First High Precision Bulk Metal^®Foil Surface-Mount

Chip Resistor with Flexible Terminations,

TCR of 2 ppm/°C and Load Life Stability of 0.01% (100 ppm)

FEATURES

•ꢀTemperatureꢀcoefﬁcientꢀofꢀresistanceꢀ(TCR):ꢀ

2.0 ppmꢀ/C typical (ꢁ––/C to ꢂ12–/C, ꢂ2–/C ref.)

(see Table 1)

•ꢀResistanceꢀrange:ꢀ10ꢀΩꢀtoꢀ125ꢀkΩꢀ(forꢀhigherꢀandꢀlowerꢀ

values, please contact Application Engineering)

Top View

•ꢀResistanceꢀtolerance:ꢀtoꢀ±0.01%ꢀ

•ꢀPowerꢀrating:ꢀtoꢀ400ꢀmWꢀatꢀ+70°C

•ꢀLoadꢀlifeꢀstability:ꢀtoꢀ±0.01%ꢀatꢀ70°C,ꢀ2000ꢀhꢀatꢀ

rated power

•ꢀStrain relief construction by ﬂexible terminations

•ꢀVishayꢀFoilꢀresistorsꢀareꢀnotꢀrestrictedꢀtoꢀstandardꢀ

values; speciﬁc “as required” values can be supplied at

noꢀextraꢀcostꢀorꢀdeliveryꢀ(e.g.ꢀ1K2345ꢀvs.ꢀ1K)

•ꢀThermalꢀstabilizationꢀtimeꢀ<ꢀ1ꢀsꢀ(nominalꢀvalueꢀachievedꢀ

within 10 ppm of steady state value)

•ꢀElectrostaticꢀdischargeꢀ(ESD):ꢀatꢀleastꢀtoꢀ25ꢀkV

•ꢀThermalꢀEMF:ꢀ0.05ꢀμV/°C

•ꢀNonꢀinductive,ꢀnonꢀcapacitiveꢀdesign

•ꢀRiseꢀtime:ꢀ1ꢀnsꢀeffectivelyꢀnoꢀringing

•ꢀCurrentꢀnoise:ꢀ0.010ꢀµV_RMSꢀV of applied voltage

(<–40ꢀdB)

INTRODUCTION

Vishay Foil Resistors’ new VSMF model is targeted for

applications that are prone to high thermal stress or

mechanical stress; it features low TCR, excellent load life

stability, tight tolerance, excellent shelf-life stability, low

current noise, high speed, and low voltage coefﬁcient—all

in the same resistor.

It is well known that chips of 1206 dimensions and

larger can occasionally develop cracks and even fall off

the printed circuit board, especially when exposed to

temperature cycling. These instances are due to stress-

inducing mishandling of the PC board (e.g., bending during

assembly), excess thermal gradients, or thermal shock.

The latter two can be divided into two categories:

1. Thermal stress induced by changes in ambient

temperature. Here, different coefﬁcients of expansion

induce mechanical stress as PCB compression

imposes tension on the resistor (or vice versa).

2. Thermal stress caused by internal heat generation

(load). Here, power dissipation within the resistor

generates temperature differentials between the

resistor and the PCB, resulting in variable stresses.

•ꢀVoltageꢀcoefﬁcientꢀ<0.1ꢀppm/V

•ꢀNonꢀinductive:ꢀ<0.08ꢀµH

•ꢀNonꢀhotꢀspotꢀdesign

•ꢀPrototypeꢀquantitiesꢀavailableꢀinꢀjustꢀ5ꢀworkingꢀdaysꢀorꢀ

sooner. For more information, please contact us.

•ꢀTerminalꢀﬁnish:ꢀleadꢀ(Pb)-freeꢀorꢀtin/leadꢀalloy^*

Note:

Stress cycling due to these two phenomena causes

material fatigue and cracks.

Pb containing terminations are not RoHS compliant,

exemptions may apply.

Vishay Foil Resistors’ new VSMF series of surface-mount

chip resistors feature ﬂexible terminations to prevent

cracking of the body of the chip or delamination from the

board, especially in resistors with high length-to-width

aspect ratios.

TABLE 1—TOLERANCE AND TCR VS.

RESISTANCE VALUE⁽¹⁾

(-––/C to ꢂ12–/C, ꢂ2–/C Ref.)

For applications with high thermal stresses, designers

typically use molded resistors with ﬂexible terminations.

These are larger than chip resistors and require more real

estate on the PCB. Vishay Foil Resistors has developed

and patented a solution which permits direct replacement

of standard chips by chips with ﬂexible terminations.

RESISTANCE

VALUE (Ω)

TOLERANCE

(%)

TYPICAL TCR AND

MAX. SPREAD (ppm/°C)

2–0 to 12–K

100ꢀtoꢀ<250

50ꢀtoꢀ<100

25ꢀtoꢀ<50

0.01

0.02

0.0–

0.1

The Vishay Foil Resistors’ application engineering

department is available to advise and make

recommendations.

±2ꢀ±4

10ꢀtoꢀ<25

0.2–

2 6

Note

For non-standard technical requirements and special

applications, please contact foil@vishaypg.com.

(1)

For tighter performances and lower values, please contact

Application Engineering.

Document No.: 63177

Revision: 07-Nov-2011

For questions, contact foil@vishaypg.com

www.vishayfoilresistors.com

12 3 4 5 6

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