Vishay Lead LVR User Manual

LVR

Vishay Dale

Wirewound Resistors, Precision Power, Low Value,

Commercial, Military, MIL-PRF-49465 Type RLV, Axial Lead

FEATURES

• Ideal for all types of current sensing applications
including switching and linear power supplies,
instruments and power amplifiers

• Proprietary processing technique produces
extremely low resistance values

• Excellent load life stability

• Low temperature coefficient

• Low inductance

• Cooler operation for high power to size ratio

Pb-free

Available

e3

RoHS*

COMPLIANT

STANDARD ELECTRICAL SPECIFICATIONS

GLOBAL
MODEL

LVR01 LVR-1 - 1 0.01 - 0.1
LVR03 LVR-3 - 3 0.005 - 0.2 Metal Strip

LVR03...26 LVR-3-26 RLV30 (M4946506) 3 0.01 - 0.2 Metal Strip

LVR05 LVR-5 - 5 0.005 - 0.3 Metal Strip

LVR05...26 LVR-5-26 RLV31 (M4946507) 5 0.01 - 0.3 Metal Strip

LVR10 LVR-10 - 10 0.01 - 0.8 Coil Spacewound

Notes

(1)

Resistance is measured 3/8" [9.52 mm] from the body of the resistor, or at 1.183" [30.05 mm], 1.315" [33.40 mm], 1.675" [42.545 mm] or

2.575" [65.405 mm] spacing for the LVR01, LVR03, LVR05 and LVR10 respectively

(2)

Standard resistance values are 0.01 Ω, 0.015 Ω, 0.02 Ω, 0.025 Ω, 0.03 Ω, 0.033 Ω, 0.04 Ω, 0.05 Ω, 0.051 Ω, 0.06 Ω, 0.068 Ω, 0.07 Ω, 0.08 Ω,

0.09 Ω and 0.1 Ω with 1 % tolerance. Other resistance values may be available upon request

HISTORICAL

MODEL

MIL-PRF-49465

TYPE

POWER RATING

P

W

25 °C

RESISTANCE RANGE Ω

± 1 %, ± 3 %, ± 5 %, ± 10 %

(1)

(2)

TECHNOLOGY

Metal Strip

TECHNICAL SPECIFICATIONS

PARAMETER UNIT LVR01 LVR03 LVR05 LVR10

Rated Power at + 25 °C W 1 3 5 10
Operating Temperature Range °C - 65 to + 175 - 65 to + 275
Dielectric Withstanding Voltage V
Insulation Resistance Ω 10 000 MΩ minimum dry
Short Time Overload - 5 x rated power for 5 s 10 x rated power for 5 s
Terminal Strength (minimum) lb 5 10 10 10
Temperature Coefficient ppm/°C See TCR vs. Resistance Value chart
Maximum Working Voltage V (P x R)
Weight (maximum) g 2 2 5 11

AC

1000 1000 1000 1000

1/2

GLOBAL PART NUMBER INFORMATION

New Global Part Numbering: LVR055L000FS73 (preferred part number format)

VR055L000FS73L

GLOBAL MODEL VALUE TOLERANCE PACKAGING SPECIAL

LV R0 1
LV R0 3
LV R0 5
LV R1 0

Historical Part Number Example: LVR-5 0.005 Ω 1 % S73 (will continue to be accepted for tin/lead product only)

LVR-5 0.005 Ω 1 % S73

HISTORICAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING

* Pb containing terminations are not RoHS compliant, exemptions may apply

www.vishay.com For technical questions, contact: [e-mail]
152 Revision: 29-Feb-08

R = Decimal

L = mΩ

(values < 0.010 Ω)

R1500 = 0.15 Ω

7L000 = 0.007 Ω

D = ± 0.5 %
F = ± 1.0 %
G = ± 2.0 %
H = ± 3.0 %
J = ± 5.0 %

K = ± 10.0 %

E70 = Lead (Pb)-free, tape/reel 1000 pieces (LVR01, 03)

S70 = Tin/lead, tape/reel 1000 pieces (LVR01, 03)

E12 = Lead (Pb)-free bulk

E03 = Lead (Pb)-free lacer pack (LVR10)

E73 = Lead (Pb)-free, tape/reel 500 pieces

B12 = Tin/lead bulk

L03 = Tin/lead lacer pack (LVR10)

S73 = Tin/lead, tape/reel 500 pieces

Document Number: 30206

(Dash Number)

(up to 3 digits)

From 1 - 999
as applicable

LVR

Wirewound Resistors, Precision Power, Low Value,

Commercial, Military, MIL-PRF-49465 Type RLV, Axial Lead

DIMENSIONS in inches [millimeters]

A

B

Note

(1)

On some standard reel pack methods, the leads may be trimmed to a shorter length than shown

1.50 [38.10]
minimum

MATERIAL SPECIFICATIONS

Element: Self-supporting nickel-chrome alloy
(LVR10 also utilizes manganin)

Encapsulation: High temperature mold compound

Terminals: Tinned copper

Part Marking: DALE, model, wattage, value, tolerance,

date code

The improved TCR characteristics of these LVR models from

- 55 °C to + 125 °C (reference to + 25 °C) are as follows:

400

(1)

MODEL

± 0.010 [0.254]B± 0.010 [0.254]C± 0.002 [0.051]
LV R0 1 0.427 [10.85] 0.115 [2.92] 0.020 [0.508]
LV R0 3 0.560 [14.22] 0.205 [5.21] 0.032 [0.813]

C

LV R0 5 0.925 [23.50] 0.330 [8.38] 0.040 [1.02]
LV R1 0 1.828 [46.43] 0.392 [9.96] 0.040 [1.02]

C

°

NI ERUTAREPMET ECAFRUS

250

200

LVR01

150

100

50

12 3 4 56 7 8 910

Surface Temperature vs Power

120

% N I R E W O P D

Vishay Dale

DIMENSIONS in inches [millimeters]

A

LVR03

LVR 05

LVR10

POWER IN W

LVR03

300

TCR IN ppm/°C

LVR05

200

100

20 40 60 80 100

TCR vs. Resistance Value

LVR10

LVR01

RESISTANCE (Ω x 10

-3

)

100

80

E
T A R

60

40

20

0

- 65 - 25

Derating

LVR03
LVR05
LVR10

LVR01

25

75 125 175 225 275

AMBIENT TEMPERATURE IN °C

PERFORMANCE

TEST CONDITIONS OF TEST TEST LIMITS

Thermal Shock - 65 °C to + 125 °C, 5 cycles, 15 min at each extrem ± (0.2 % + 0.0005 Ω) ΔR

Short Time Overload 5 x rated power (LVR01, 03, 05), 10 x rated power (LVR10) for 5 s ± (0.5 % + 0.0005 Ω) ΔR

Low Temperature Storage - 65 °C for 24 h ± (0.2 % + 0.0005 Ω) ΔR

High Temperature Exposure 250 h at + 275 °C (+ 175 °C for LVR01) ± (2.0 % + 0.0005 Ω) ΔR

Dielectric Withstanding Voltage 1000 V

Insulation Resistance MIL-STD-202 Method 302, 100 V 1000 MΩ minimum

Moisture Resistance MIL-STD-202 Method 106, 100 7b not applicable ± (0.2 % + 0.0005 Ω) ΔR

Shock, Specified Pulse MIL-STD-202 Method 213, 100 g's for 6 ms, 10 shocks ± (0.1 % + 0.0005 Ω) ΔR

Vibration, High Frequency Frequency varied 10 to 2000 Hz, 20 g peak, 2 directions 6 h each ± (0.1 % + 0.0005 Ω) ΔR

Load Life 2000 h at rated power, + 25 °C, 1.5 h “ON”, 0.5 h “OFF” ± (2.0 % + 0.0005 Ω) ΔR

Solderability ANSI J-STD-002 95 % coverage

Bias Humidity + 85 °C, 85 % RH, 10 % bias, 1000 h ± (1.0 % + 0.0005 Ω) ΔR

Document Number: 30206 For technical questions, contact: [e-mail]
Revision: 29-Feb-08 153

, 1 min ± (0.1 % + 0.0005 Ω) ΔR

rms

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