303140-38K3-D-B-L datasheet, PDF

Datasheet> All Categories > Passive components> The resistor> 303140-38K3-D-B-L

303140-38K3-D-B-L: DescriptionFixed Resistor, Metal Foil, 0.4W, 38300ohm, 127V, 0.5% +/-Tol, -.2,.2ppm/Cel, 2917; CategoryPassive components The resistor; File Size503KB，7 Pages; ManufacturerVishay; Websitehttp://www.vishay.com

Download Datasheet Parametric View All

303140-38K3-D-B-L Overview

Fixed Resistor, Metal Foil, 0.4W, 38300ohm, 127V, 0.5% +/-Tol, -.2,.2ppm/Cel, 2917

303140-38K3-D-B-L Parametric

Parameter Name	Attribute value
Is it lead-free?	Contains lead
Is it Rohs certified?	incompatible
Maker	Vishay
package instruction	SMT, 2917
Reach Compliance Code	compliant
ECCN code	EAR99
structure	Molded Chip
Manufacturer's serial number	303140
Number of terminals	2
Maximum operating temperature	175 °C
Minimum operating temperature	-55 °C
Package height	2.79 mm
Package length	7.29 mm
Package form	SMT
Package width	4.32 mm
method of packing	Bulk
Rated power dissipation(P)	0.4 W
Guideline	MIL-PRF-55182
resistance	38300 Ω
Resistor type	FIXED RESISTOR
series	303140
size code	2917
technology	METAL FOIL
Temperature Coefficient	-.2,.2 ppm/°C
Tolerance	0.5%
Operating Voltage	127 V
Base Number Matches	1

Preview

Download Datasheet

View All

303139, 303140

Vishay Foil Resistors

Models # 303139 and 303140 - Molded Surface Mount Space and Military

Grade Resistors SMRxDZ with Screen/Test Flow in Compliance with

EEE-INST-002, (Tables 2A and 3A, Film/Foil, Level 1) and MIL-PRF-55182

FEATURES

•

Temperature coefficient of resistance (TCR):

± 0.2 ppm°C typical (- 55 °C to + 125 °C, + 25 °C ref.)

•

Tolerance: to ± 0.02 %

•

Power coefficient of resistance (PCR)

“ΔR due to self heating”: 5 ppm at rated power

•

Flexible terminations ensure minimal stress transference

from the PCB due to a difference in thermal coefficient of

expansions (TCE)

•

Electrostatic discharge (ESD) up to 25 000 V

•

Load life stability: ± 0.005 % (70 °C, 2000 h at rated power)

•

Resistance range: 5

to 40 kΩ

•

Vishay Foil resistors are not restricted to standard values;

specific “as requested” values can be supplied at no extra

cost or delivery (e.g. 1K2345 vs. 1K)

•

Maximum power: to 600 mW at 70 °C

•

Non-inductive, non-capacitive design

•

Current noise: - 40 dB

•

Voltage coefficient: < 0.1 ppm/V

•

Non-inductive: < 0.08 µH typical

•

Non hot spot design

•

Terminal finish: tin/lead alloy

•

Matched sets with TCR tracking are available upon

request

•

For oriented performances please contact us

•

For prototype units, append a “U” to the model number

(example: 303139U). These units pass all tests per table 3

(page 4) with no destructive qualification testing required

(table 4, page 4). For more information, please contact

foil@vishaypg.com

INTRODUCTION

The 303139, 303140 are ultra high precision molded surface

mountable resistors offering all the elements of precision;

including low TCR, tight tolerance, long term stability, low

noise, low thermal EMF, and non-measurable voltage

coefficient. One of the important parameters influencing

stability is the temperature coefficient of resistance (TCR).

Although the TCR of foil resistors is considered extremely

low, this characteristic has been further refined over the

years. These resistors utilize ultra high precision Bulk Metal

Z-Foil.

The Z-Foil technology provides a significant reduction of

the resistive element’s sensitivity to ambient temperature

variations (TCR) and to self heating when power is applied

(power coefficient).

Voltage division with tight tracking < 2 ppm/°C can be

achieved with 2

randomly

selected units even with a large

ratio between the two values.

Our application engineering department is available to

advise and make recommendations.

TABLE 1 - TOLERANCE AND TCR VS.

RESISTANCE VALUE

(- 55 °C to + 125 °C, + 25 °C ref.)

VALUE

250

to 40 kΩ

to < 250

to < 50

to < 20

to < 10

ABSOLUTE

TOLERANCE

± 0.02 %

± 0.05 %

± 0.1 %

± 0.2 %

± 0.5 %

TYPICAL TCR AND

MAX. SPREAD

(ppm/°C)

± 0.2 ± 1.8

± 0.2 ± 2.8

± 0.2 ± 4.8

± 0.2 ± 6.8

FIGURE 1 - POWER DERATING CURVE

200

175

Rated Power (%)

150

125

100

- 75

- 25

+ 25

+ 75

+ 125

Ambient Temperature (°C)

+ 175

- 55 °C

+ 70 °C

Document Number: 63165

Revision: 27-Jul-10

For any questions, contact:

foil@vishaypg.com

www.foilresistors.com

Recommended Resources

Thermocouple temperature measurement circuit with cold junction compensation

Low dropout 5V voltage regulator circuit

High power operational amplifier circuit OPA541

555 circuit breaker alarm circuit

The principle of KMW-306 dual-channel wireless microphone and how to change its use

Reflective infrared control circuit

[2022 Digi-Key Innovation Design Competition] Blockchain service construction: Briefly describe the solution: Make a simple data collection solution based on Raspberry P400, and store the data on the chain to provide traceability verification.Today we first build a blockchain se...; 29447945 DigiKey Technology Zone

Is there anyone doing routing in this forum?: As the title says, I want to learn wireless routing. Can you tell me some ideas?...; 651076842 RF/Wirelessly

AD keyboard control clock: Since the MSP430 Launchpad has too few io ports, I decided to use an AD keyboard for control. The principle of the AD keyboard is to execute different functions by collecting different voltages at dif...; 风动随心 Microcontroller MCU

I would like to ask why the electric bicycle occasionally appears to be locked by the remote control even though it has never been locked using the remote control?: I would like to ask why my electric bicycle is occasionally locked by the remote control. I have never locked it with the remote control. The remote control has been in a drawer and has never been use...; 深圳小花 MCU

The IO port of the microcontroller is not enough. What chip can be used to expand the IO port?: If you want to light up 80 LED lights one by one, and keep them on until all 80 lights are on, then they will all be turned off together, and repeat this cycle. Then you need 80 outputs, which is impo...; esobao MCU

The operator "===" or "!==" in Verilog cannot be synthesized: The operators "===" or "!==" in Verilog cannot be synthesized , but what should I do if I cannot modify them to "==" or "!="? I still want to synthesize successfully....; gjgd FPGA/CPLD

Shortcut: A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AP AQ AR AS AT AU AV AW AX AY AZ B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF BG BH BI BJ BK BL BM BN BO BP BQ BR BS BT BU BV BW BX BY BZ C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF CG CH CI CJ CK CL CM CN CO CP CQ CR CS CT CU CV CW CX CY CZ D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF DG DH DI DJ DK DL DM DN DO DP DQ DR DS DT DU DV DW DX DZ

Popular Components