Datasheet

ELECTRICAL AND ENVIRONMENTAL CHARACTERISTICS / DATA
Power Rating (Rated Ambient Temperature) Full Power dissipation at 70°C and linearly
derated to zero at 275°C for C3S / C3FS & at
160°C for C2S / C2FS (Refer Derating Curve above)
Resistance Tolerances Available ±10% (K); ±5% (J); ±3% (H); ±2% (G); ±1% (F)
Operating Temperature Range -55°C to +160°C (C2S / C2SFS) and -55°C to +275°C
(C3S / C3SFS) with suitable derating as per derating curve
Voltage Rating / Limiting Voltage / Max Working Voltage V= PxR
Voltage Proof / Dielectric Withstanding Voltage ∆R ± [0.2% + R05] -
(based on 1000V rms for 60 secs) No ashover or mechanical damage
Insulation Resistance (MIL STD 202F - Test Method 302) >1000M (Min)
Short Time Overload (5 x Rated Power for 5 secs) ∆R ± [0.2% + R05] - Average
Temperature Co-ecient of Resistance <1R0 ±80 ppm/°C
<100R ±60 ppm/°C
>100R ±90 ppm/°C or ±30 ppm/°C
(Depending on wire selected)
Thermal Shock [-65°C to +125°C, 5 cycles, ∆R ± [0.2% + R05] - Average
15 min. at each extreme temperature]
Temperature Rise (Ambient 30°C) Refer Temperature Rise Curve shown above
Moisture Resistance (MIL STD 202F - Test Method 106E ∆R ± [0.5% + R05] - Average
with step 7b eliminated)
Damp Heat (Steady State) / Humidity ∆R ± [0.5% + R05] - Typical
(40°C at 95% R.H for 250 hours)
Endurance - Load Life (70°C with limiting voltage - ∆R ± [1.0% + R05] - Average
1.5 hours on / 0.5 hours o for 1000 hours)
Solvent Resistance [IPA for 60 secs ± 10 secs] No eect on case lling / marking
PARAMETER/PERFORMANCE TEST & TEST METHOD PERFORMANCE REQUIREMENTS
• At HTR, a special “Safety Version” is available in HCAS series for resistance values ≥10R wherein the resistor will fuse instantaneously
when mains voltage 220/240V is applied with no ame or explosion.
• For resistance values <10R, the fusing time and suitability must be tested and validated by the buyer for his particular application.
• For Tape and Reel packing, add 100% to typical weight per pc given to ascertain gross weight of
consignment.
Note: Due to recent technological advances, the ceramic cases used may be steatite ceramic or corderite ceramic or high alumina ceramic
depending on the nature of the application. Hence the ceramic cases may be o-white or variations of brown and variations of grey; colours
which are inherent to these ceramic materials.
Resistance to Soldering Heat (260°C - 270°C for 4 secs) ∆R ± [0.5% + R05] - Typical
Solderability (MIL STD 202F - Test Method 208F) Must meet the requirements laid down (95% satisfactory coverage)
MECHANICAL SPECIFICATIONS
1. For RoHS version - C2S *
2. For Non Inductive type - N C2S
3. For Tape & Reel packing - C2S TR
4. For Fusible Safety Version - C2S FS
ORDERING INFORMATION
PARAMETER/PERFORMANCE TEST & TEST METHOD PERFORMANCE REQUIREMENTS
Series HTR Type Packing Resistance Value Tolerance
HCAS C2S / C2S* Bulk C2S / C2S* 10R J
Tape & Reel C2STR / C2S*TR
SURFACE
MOUNT
RESISTORS
CERAMIC EN-
CASED TYPE
HCAS
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www.htr-india.com
WELTRON Elektronik GmbH // Tel: [phone] // Fax: [phone] // E-Mail: [e-mail]
WELTRON Elektronik GmbH // Tel: [phone] // Fax: [phone] // E-Mail: [e-mail]