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WK/WR
Vishay Draloric
High Power Metal Oxide Leaded Resistors
FEATURES
* Rugged metal oxide film * High power dissipation in small size (1 W/0207 size to 4 W/0922 size) * High temperature coating (up to 200 C), non-flammable * Lead (Pb)-free solder contacts * Pure tin plating provides compatibility with lead (Pb)-free and lead containing soldering processes * Compliant to RoHS directive 2002/95/EC
STANDARD ELECTRICAL SPECIFICATIONS
MODEL SIZE RATED DISSIPATION P70 W 1.0 1.0 1.0 2.0 LIMITING ELEMENT VOLTAGE Umax. V 500 500 500 500 TEMPERATURE COEFFICIENT ppm/K 50 100 200 200 TOLERANCE % 1 2 5 5 2 5 2 5 2 5 RESISTANCE RANGE 4.7 to 1 M 4.7 to 1 M 4.7 to 1 M 0.22 to 1 M 1 to 1 M 0.33 to 1 M 1 to 100 k 0.22 to 560 k 1 to 68 k 0.22 to 100 k E-SERIES
WK2 WK2 WK2 WR4
0207 0207 0207 0414
E24, E96 E24, E48 E24 E24 E24, E48 E24 E24, E48 E24 E24, E48 E24
WR5
0617
3.0
750
200
WK8 Notes
0922
4.0
750
200
* Coating: Green * Marking: WK2 and WR4 have color code band marking. TCR band will be given to only WK2, 100 ppm, 5 %. WR5 and WK8 are printed marked.
TECHNICAL SPECIFICATIONS
PARAMETER Rated Dissipation, P70 Limiting Element Voltage, Umax.(1) Insulation Voltage, Uins (1 Min) Thermal Resistance, Rth Insulation Resistance Category Temperature Range (2) Failure Rate Weight Notes
(1) (2)
UNIT W V V K/W C 10-8/h g
WK2 1.0 500 > 500 140
WR4 2.0 500 > 500 100 > 109 - 55 to + 200 <1
WR5 3.0 750 > 500 70
WK8 4.0 750 > 500 60
0.2
0.7
1.5
3.5
Rated Voltage P x R For values < 10R the upper limiting temperature is 155 C. The power rating is correspondingly lower and can be calculated by Rth.
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Document Number: 20128 Revision: 26-May-10
WK/WR
High Power Metal Oxide Leaded Resistors
Vishay Draloric
PART NUMBER AND PRODUCT DESCRIPTION WK2-SERIES
PART NUMBER: WK202070C1001FD500
W
MODEL/SIZE WK20207
K
2
0
2
0
7
TCR
0
C
1
VALUE
0
0
1
F
D
5
0
0
SPECIAL Up to 2 digits 00 = Standard
VARIANT 0 = Neutral
TOLERANCE F=1% G=2% J=5%
PACKAGING (1) 22 = A2 25 = A5 D5 = R5
C = 50 ppm/K B = 100 ppm/K A = 200 ppm/K
3 digit value 1 digit multiplier MULTIPLIER 7 = *10-3 8 = *10-2 9 = *10-1 0 = *100 1 = *101 2 = *102 3 = *103 4 = *104 5 = *105 6 = *106
PRODUCT DESCRIPTION: WK2 50 1K0 1 % R5 WK2 MODEL WK2 50 TCR 50 ppm/K 100 ppm/K 200 ppm/K 1K0 RESISTANCE VALUE 49K9 = 49.9 k 50R1 = 50.1 1K0 = 1.0 k 1% TOLERANCE 1% 2% 5% R5 PACKAGING (1) A2 A5 R5
PART NUMBER AND PRODUCT DESCRIPTION WK8-SERIES
PART NUMBER: WK80922001000J5C00
W
MODEL/SIZE WK80922
K
8
0
9
2
2
TCR
0
0
1
VALUE
0
0
0
J
5
C
0
0
SPECIAL Up to 2 digits 00 = Standard
VARIANT 0 = Neutral
TOLERANCE G=2% J=5%
PACKAGING (1) 5C = AC G1 = R1
0 = Standard
3 digit value 1 digit multiplier MULTIPLIER 7 = *10-3 8 = *10-2 9 = *10-1 0 = *100 1 = *101 2 = *102 3 = *103 4 = *104 5 = *105
PRODUCT DESCRIPTION: WK8 100R 5 % AC WK8 MODEL WK8 100R TCR 100R = 100 47K = 47 k 5% TOLERANCE 2% 5% AC PACKAGING (1) AC R1
PART NUMBER AND PRODUCT DESCRIPTION WR-SERIES
PART NUMBER: WR404140A1001GFE00
W
MODEL/SIZE WR40414 WR50617
R
4
0
4
1
4
TCR
0
A
1
VALUE
0
0
1
G
F
E
0
0
SPECIAL Up to 2 digits 00 = Standard
VARIANT 0 = Neutral
TOLERANCE G=2% J=5%
PACKAGING (1) 41 = A1 G73 51 = A1 G77 FE = RE G73 GP = RP
A = 200 ppm/K
3 digit value 1 digit multiplier MULTIPLIER 7 = *10-3 8 = *10-2 9 = *10-1 0 = *100 1 = *101 2 = *102 3 = *103 4 = *104 5 = *105 6 = *106 2%
PRODUCT DESCRIPTION: WR4 1K0 2 % RE WR4 MODEL WR4 WR5 1K0 RESISTANCE VALUE 1K0 = 1.0 k 51R0 = 51.0 RE PACKAGING (1) A1 (G73) A1 (G77) RE (G73) RP TOLERANCE 2% 5%
Notes (1) Please refer to table PACKAGING * The PART NUMBER shown above is to facilitate the unified part numbering system for ordering products www.vishay.com 177 For technical questions, contact: filmresistorsleaded@vishay.com Document Number: 20128 Revision: 26-May-10
WK/WR
Vishay Draloric
High Power Metal Oxide Leaded Resistors
PACKAGING
REEL MODEL PIECES/REEL 5000 2500 1500 1000 CODE R5 RE RP R1 MIN. ORDER QTY PACKAGING UNITS 1 2 2 2 PIECES/BOX 5000 2000 1000 1000 500 BOX CODE A5 A2 A1 (G73) A1 (G77) AC MIN. ORDER QTY PACKAGING UNITS 1 1 2 2 2
WK2 WR4 WR5 WK8
DIMENSIONS
6 mm (1) L1 L D d
DIMENSIONS [in millimeters] MODEL D WK2 2.5 - 0.5 3.9 - 0.5 6.0 - 0.5 9.0 - 0.5 L 6.5 - 0.5 10.0 - 1.6 16.5 - 1.5 20.0 - 1.5 L1 max. 8.0 12.0 20.0 24.0 B 53 1 73 1 77 1 77 1 d 0.6 0.8 0.8 0.8 e 7.5 15.0 17.5 22.5
e B
WR4 WR5 WK8
Notes (1) 9 mm for WR5/WK8 * Taping in acc. with IEC 60286-1 * D and L measured in acc. with IEC 60294 * d according to IEC 60301
TEMPERATURE RISE IN C
300 250 200 150 100 50 0 0 1.0 2.0 3.0 4.0 5.0 POWER IN W WK2 WR4 WR5 WK8
RATED POWER IN %
120 100 80 60 40 20 0 - 55 0 40 80 70 120 160 200 240 280 320 360 AMBIENT TEMPERATURE IN C
WK2 WR4 WR5 WK8
TEMPERATURE RISE
POWER RATING P [W]
10
3
DERATING
POWER RATING P [W]
10
3
WK 8 WR 5 WR 4 WK 2 101 Secondary Conditions: a) P b) u 70 C c) Umax. see diagram below d) ~ 10R 10-4 10-3 10-2 10 10-1 100 SQUARE PULSE t i [s]
WK 8 WR 5
102
102
WR 4 WK 2
101 Secondary Conditions: a) P P70 (permissible constant power at u = 70 C) b) u 70 C c) Umax. see diagram below d) ~ 10R 10-4 10-3 10-2
100
100
10-1 -5 10
10-1 -5 10
PULSE RATING P
O
PULSE RATING P P70
10 100 10-1 SQUARE PULSE t i [s]
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Document Number: 20128 Revision: 26-May-10
WK/WR
High Power Metal Oxide Leaded Resistors
Vishay Draloric
PULSE VOLTAGE Umax. [V]
2000 WR 5/WK8
WR 4 WK 2
Secondary Conditions: - a) P max. see diagram below b) See diagram below c) u 70 C
1000
0
10-5
10-4
10-3
10-2
MAX. PULSE VOLTAGE
NON-LINEARITY A3 [dB]
130
10 10-1 100 SQUARE PULSE t i [s]
WR4 120 WR5/WK8 110
CURRENT NOISE V/V
10
1
WR5/WK8 0.1 WR4
100
90 0.01 10K
1K
10K
100K
NON-LINEARITY
PERFORMANCE
TEST Rated Dissipation, P70 IEC 60115-1, 4.25.1 Endurance at UCT IEC 60115-1, 4.25.3 Overload Test IEC 60115-1, 4.13 Thermal Shock IEC 60115-1, 4.19 Climatic Sequence IEC 60115-1, 4.23 Damp Heat Steady State IEC 60115-1, 4.24 Resistance to Soldering Heat IEC 60115-1, 4.18 Robustness of Terminations IEC 60115-1, 4.16 Vibration IEC 60115-1, 4.22 Note (1) Limits for change of resistance at test
1M 10M RESISTANCE VALUE IN
100K
CURRENT NOISE
1M 10M RESISTANCE VALUE IN
CONDITIONS OF TEST 1000 h at 70 C 1.5 h ON, 0.5 h OFF 1000 h at 200 C without load Short time overload 5 s at 2.5 x rated voltage or twice the limiting element voltage Rapid change between upper and lower category temperature Dry heat, damp heat cycle, cold, low air pressure 56 days; 40 C; 90 % to 95 % RH; loaded with 0.01 P70 10 s at 260 C solder bath temperature Tensile, bending and torsion Frequency 10 Hz to 500 Hz; displacement 1.5 mm or acceleration 10 g; three directions; 6 h
REQUIREMENTS (R MAX.) (1) WK2 (5 % R + 0.1 ) WK8 (2 % R + 0.1 ) WR4, WR5 (5 % R + 0.1 ) WK2, WR4 (5 % R + 0.1 ) WR5, WK8 (1 % R + 0.1 ) (0.25 % R + 0.05 ) (0.25 % R + 0.05 ) (0.5 % R + 0.1 ) (1.5 % R + 0.1 ) (0.25 % R + 0.05 ) (0.25 % R + 0.05 ) (0.25 % R + 0.05 )
APPLICABLE SPECIFICATIONS
* EN140100, EN60115-1, IEC 60115-1
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Document Number: 20128 Revision: 26-May-10
Legal Disclaimer Notice
Vishay
Disclaimer
All product specifications and data are subject to change without notice. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, "Vishay"), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay's terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners.
Document Number: 91000 Revision: 18-Jul-08
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