WRF21.55%T datasheet, PDF - EEWORLD Datasheet

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WRF21.55%T: DescriptionFixed Resistor, Wire Wound, 2W, 1.5ohm, 5% +/-Tol, 900ppm/Cel, Through Hole Mount, AXIAL LEADED, ROHS COMPLIANT; CategoryPassive components The resistor; File Size79KB，1 Pages; ManufacturerSEI(Stackpole Electronics Inc.); Websitehttps://www.seielect.com/; Environmental Compliance

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WRF21.55%T Overview

Fixed Resistor, Wire Wound, 2W, 1.5ohm, 5% +/-Tol, 900ppm/Cel, Through Hole Mount, AXIAL LEADED, ROHS COMPLIANT

WRF21.55%T Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	SEI(Stackpole Electronics Inc.)
package instruction	,
Reach Compliance Code	compliant
Other features	FLAME PROOF
JESD-609 code	e2
Manufacturer's serial number	WRF
Installation features	THROUGH HOLE MOUNT
Number of terminals	2
Maximum operating temperature	200 °C
Minimum operating temperature	-55 °C
Package shape	TUBULAR PACKAGE
method of packing	AMMO PACK
Rated power dissipation(P)	2 W
Rated temperature	25 °C
resistance	1.5 Ω
Resistor type	FIXED RESISTOR
surface mount	NO
technology	WIRE WOUND
Temperature Coefficient	900 ppm/°C
Terminal surface	Tin/Copper (Sn/Cu)
Terminal shape	WIRE
Tolerance	5%

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WRF Series

Conformal Coated Wirewound Resistor

Features:

•

Conformal coating

Flameproof construction

Cut and formed product is available on select sizes

Contact factory for details

RoHS compliant / lead-free

Stackpole Electronics, Inc.

Resistive Product Solutions

Electrical Specifications

Type / Code

WRF 1

WRF 2

WRF 3

Power Rating

(Watts) @ 25ºC

Maximum

Working

Voltage

√PR

Dielectric

Withstanding

Voltage (RMS)

700V

Resistance Temperature

Coefficient

-80 ppm/ºC ~ +900 ppm/ºC

Ohmic Range (Ω)

and Tolerance

0.1 - 33

0.1 - 220

Mechanical Specifications

Type / Code

WRF 1

WRF 2

WRF 3

Body Length

0.433 max

11 max

0.630 max

16 max

0.630 max

16 max

Power Derating Curve

Body Width

0.197 max

5 max

0.197 max

5 max

0.197 max

5 max

Lead Length (Bulk)

1.1 ± 0.08

28 ± 3

1.1 ± 0.08

28 ± 3

1.1 ± 0.12

28 ± 3

Lead Diameter

0.031 ± 0.002

0.78 ± 0.05

0.031 ± 0.002

0.78 ± 0.05

0.031 ± 0.002

0.78 ± 0.05

Units

inches

Performance Characteristics

100

WRF 3

WRF 1, 2

Test

Rated Ambient Temperature

Overload 15 Times the Rated Wattage

Short Time Overload

Effective Soldering

Insulation Resistance

Dielectric Withstanding Volt

Load Life @ 70ºC - 1,000 hrs.

Moisture Resistance

Shock and Vibration

Solderability

Temperature Coefficient

200

225

250

300

Test Results

85ºC

Open circuit within 2 minutes

± 3% + 0.05Ω

± 2% + 0.05Ω

>10 MΩ

± 2% + 0.05Ω

± 5% + 0.05Ω

± 1% + 0.05Ω

90% tin covered min.

-80 ±900 ppm/ºC

Percent Rated Power (%)

85 100

150

Ambient Temperature (ºC)

Operating Temperature Range: -55ºC to +200ºC (WRF 1, 2)

-55ºC to +220ºC (WRF 3)

How to Order

SEI Type

Code

Nominal Resistance

Tolerance

Packaging

WRF

Type

WRF

Description

Conformal Coated WW

Code

1.1K

Tolerance

Values

E24

Type

All

Pkg Qty

1,000

2,000

1,000

Description

Bulk

Tape

Ammo

Code

Rev Date: 04/22/2010

This specification may be changed at any time without prior notice

Please confirm technical specifications before you order and/or use.

www.seielect.com

marketing@seielect.com

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