SMD Resistor for Medical Electronics. Accurate and stable instrumentation in the medical field requires the ability to detect very small signals without producing false readings. For the complement of chip resistors surrounding the operational amplifier and anywhere else resistors are needed in medical applications, the preferred choice of device is Vishay Foil.
Customer Requirements
● Reliable measurements of motor control are necessary to perform injections at the precise location
● High speed response necessary to perform given task
● Low sensitivity to short-time overload
● Surface mount to preserve limited real estate
● 4 pad Kelvin connection desired as a way to improve accuracy
Key Benefits
● Temperature coefficient of resistance (TCR):
±0.05 ppm/ºC (0ºC to 60ºC) typical with Z-Foil
±0.2 ppm/ºC (-55ºC to +125ºC, +25ºC ref.) typical with Z-Foil
● Resistance tolerance to ±0.01%
● Power Coefficient of Resistance (PCR) “∆R due to self heating”: 5 ppm at rated power with Z-Foil
● Electrostatic discharge (ESD) at least to 25 kV
● Overload Capability (6.25 X rated power, 5 seconds) <0.005% (50 ppm)
● Rise Time: 1 ns without ringing
● Structure and process provides low sensitivity to moisture
● Non inductive, non capacitive image design
● Current noise: 0.010 μVRMS/V of applied voltage (<-40 dB)
● Thermal stabilization time <1s (nominal value achieved within 10 ppm of steady state value)
● Matched sets are available upon request
● Vishay Foil resistors are not restricted to standard values; specific “as required” values can be supplied at no extra cost or delivery (e.g. 1K2345 vs. 1K)
● Lead (Pb) free, gold and tin/lead terminations available
Series | Product | Description | Resistance Range | Tolerance | TCR ppm/°C | Rated Power @70°C | Datasheet |
CSM2512 & CSM3637
|  | Metal strip chip resistor | 1mΩ to 200mΩ | ±0.1% to ±1% | ±15 | Up to 3W |  |
CSM2512S &CSM3637S
|  | Current sensing chip resistor | 10mΩ to 100mΩ | ±0.1% to ±1% | ±15 | Up to 2W
|  |
CSM3637P |  | Improved power metal strip resistor | 3mΩ to 100mΩ | ±0.1% to ±1% | ±15 | Up to 5W |  |
CSM3637Z
|  | Current sensing chip resistor | 3mΩ to 50mΩ | ±0.1% | ±5 | Up to 3W
|  |
VCS1610 |  | 4-terminal Current sensing chip resistor | 0.1Ω to 1Ω | ±0.5% to ±1% | ±2 | 0.25W |  |
VCS1610Z |  | 4-terminal Current sensing chip resistor | 0.3Ω to 1Ω | ±0.5% to ±1% | ±0.2 | 0.25W |  |
VCS1625
|  | 4-terminal Current sensing chip resistor | 10mΩ to 10Ω | ±0.5% to ±2% | ±2 | 0.5W |  |
VCS1625P |  | Z-foil current sensing chip resistor | 10mΩ to 10Ω | ±0.1% to ±2% | ±2 | 1W |  |
VCS1625Z |  | Z-foil current sensing chip resistor | 0.3Ω to 10Ω | ±0.2% to ±2% | ±0.2 | 0.5W |  |
VCS1625ZP |  | Z-foil current sensing chip resistor | 0.3Ω to 10KΩ | ±0.2% to ±2% | ±0.2 | 1W |  |
VPR220S & VPR221S |  | TO-220 power resistor (2/4-terminal) | 5Ω to 10KΩ | ±0.01% to ±1% | ±2 | 8W on heat sink,1.5W in free air |  |
VPR220SZ &VPR221SZ
|  | TO-220 precision power resistors (2/4-terminal) | 5Ω to 10KΩ | ±0.01% to ±1% | ±0.2 | 8W on heat sink,1.5W in free air
|  |
VCS201, VCS202 |  | Conformally Coated Precision Current Sensing Resistors | 5mΩ to 0.2Ω | ±0.1% to ±5% | ±10 | 1.5W to 2W |  |
VCS232 |  | Power current sensing resistor | 0.2Ω to 500Ω | ±0.02% to ±5% | ±2 | 2W |  |
VCS232Z |  | Power current sensing resistor | 0.25Ω to 500Ω | ±0.02% to ±1% | ±0.2 | 2W |  |
VCS301, VCS302 |  | 4-Terminal power current sensing resistor | 5mΩ to 0.25Ω | ±0.5% to ±5% | ±3 | 10W on heat sink,3W in free air |  |
VCS331, VCS332 |  | 4-Terminal power current sensing resistor | 0.25Ω to 500Ω | ±0.1% to ±5% | ±1 | 10W on heat sink,3W in free air |  |
VFP3, VFP4 |  | Molded Power Current Sensing Resistors | 50mΩ to 80KΩ | ±0.01% to ±5% | ±2 | 10W on heat sink,3W in free air |  |
VHP3, VHP4, VPR247 |  | Hermetically Sealed Molded Power Current Sensing Resistors | 50mΩ to 80KΩ | ±0.01% to ±5% | - | 10W on heat sink,3W in free air |  |
DSM |  | SMD molded voltage divider | 100Ω to 20KΩ | ±0.01% to ±0.05% | ±2 | 0.05W per element
|  |
DSMZ
|  | SMD molded voltage divider | 100Ω to 10KΩ | ±0.01% to ±0.05% | ±0.2 | 0.05W per element |  |
SMN |  | 4- Resistor Network Dual-In-Line Molded Package 50 MIL Pitch | 100Ω to 20KΩ | ±0.01% to ±0.05% | ±2 | 0.1W per element |  |
SMNZ
|  | 4-Resistor Surface Mount Network Dual-In-Line Molded Package | 100Ω to 10KΩ | ±0.01% to ±0.05% | ±0.2 | 0.1W per element
|  |