SQM7-15RJI Welwyn Components, SQM7-15RJI Datasheet - Page 2

• Manufacturer Part Number: SQM7-15RJI
• Description: RESISTOR, 7W, 5%, 15R
• Manufacturer: Welwyn Components
• Series: SQM7r

Specifications of SQM7-15RJI

• Resistance: 15ohm
• Resistance Tolerance: ± 5%
• Power Rating: 7W
• Voltage Rating: 500V
• Resistor Element Material: Wirewound
• Svhc: No SVHC (15-Dec-2010)
• Package /: RoHS Compliant
• Temperature Coefficient: ± 400ppm/°C
• Resistor Case Style: Radial
• Rohs Compliant: Yes

Radial Ceramic Case Resistors
Wirewound / Metal Oxide
Termination Details:
Material
Solderability
Strength
Marking: Type reference, resistance value and tolerance are legend marked onto the upper surface.
Flammability: The resistor will not burn under any condition of applied temperature or overload.
Solvent resistance: The body protection and marking are resistant to all normal industrial solvents suitable for printed
circuits.
Performance Data
Load at rated power (1000hrs at 70°C)
Derating from rated power at 70°C
Short term overload *
Damp heat steady state (56 days, 40°C, ≥90% RH)
Temperature rapid change (5 cycles -55ºC to +155ºC)
Resistance to solder heat
Voltage Proof (1kV for 60s)
Solderability
* Wirewound: the lower of 5x rated power, or 2.5x LEV for 5s
Derating Curve
Ordering Procedure
Example: SQM3 at 1.2 kilohms and 5% tolerance bulk packed in a box of 3000 pieces –
Type
Value (use IEC62 code)
Tolerance (use IEC62 code)
J
Packing
© Welwyn Components Limited
Telephone: [phone] Facsimile: [phone] Email: [e-mail] Website: www.welwyn-tt.com
SQM Series
B3
B2
B1
5%
Bulk
SQM2, 3
SQM5
SQM7, 10
The 100% Sn finish copper lead wires are internally welded to the resistance element end caps.
The terminations meet the requirements of IEC 115-1 Clause 4.17.3.2
The terminations meet the requirements of IEC 86.2.21
3000 / box
2000 / box
1000 / box
Bedlington Northumberland NE22 7AA, UK
P/Pr
100%
60%
0%
-55
Standard
70
Metal Oxide: the lower of 6.25x rated power, or 2.5x LEV for 5s
S Q M 3 – 1 K 2 J B 3
155
ΔR
ΔR
ΔR
ΔR
ΔR
No evidence of flashover, mechanical damage,
275
arcing or insulation breakdown
<100K, 5%; ≥100K, 10%
T (°C)
Min. 95% coverage
5% +0.05Ώ
5% +0.05Ώ
2% +0.05Ώ
1% +0.05Ώ
See Graph
Maximum
05 . 08