200 - Bulk Metal Foil Precision Current-Sense Resistor | Vishay Siliconix
N.º da peça: 200 ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $8.2 | $8,20 |
| 10 | $7.45 | $74,50 |
| 100 | $6.5 | $650,00 |
| 500 | $5.75 | $2.875,00 |
| 1.000 | $5.1 | $5.100,00 |
200 Visão geral
Key specifications include an ultra-low TCR of 5 ppm/°C, resistance values down to 5 mΩ, and Bulk Metal Foil resistive element technology that delivers long-term stability and low noise. The conformally coated body provides environmental protection against humidity and contamination, while the foil element geometry cancels thermoelectric EMF errors that plague ordinary wire-wound or thick-film current-sense resistors. These characteristics make the 200 a reference-grade component for instrumentation-grade shunts.
Technically, the 200 relies on Bulk Metal Foil resistive element patterning, where the bulk resistance is achieved through a controlled meandering pattern of nickel-chromium alloy bonded to a ceramic substrate. This yields superior pulse handling, low inductance, and stable performance across decades of operating time. The foil element is laser-trimmed in production to reach the tight resistance tolerance required for precision current-sensing, and the conformal coating isolates the resistive element from ambient thermal stress, holding the 5 ppm/°C TCR over the full operating temperature range.
Typical applications include precision current sensing in laboratory instrumentation, medical monitoring equipment, battery management systems for electric vehicles, industrial process control, and aerospace telemetry - any application where a sub-mΩ shunt with predictable temperature behavior is needed to support accurate coulomb counting or closed-loop current control.
When designing with the 200, ensure Kelvin (4-wire) connection to the sense pads to avoid lead-resistance contamination of the measurement. Mount the part away from large heat sources, and keep solder-iron dwell time below the rating stated in the datasheet to avoid permanently shifting the resistance value. For pulsed current applications, verify the instantaneous power against the datasheet pulse-load chart before committing to the design.
This page synthesizes distributor pricing, drop-in alternatives, and practical design guidance not found in the manufacturer datasheet alone. Engineers comparing current-sense resistors for high-precision applications will find the comparison table, design notes, and FAQ tailored to the selection workflow.
Alternativas drop-in para 200 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
CS201
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
CS203
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
YAGEO-Precision-CS-5mΩ
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
200 Classificações máximas e características elétricas
| Manufacturer | Vishay Siliconix |
| Resistor Type | Bulk Metal Foil Current Sensing |
| Technology | Bulk Metal Foil |
| Minimum Resistance | 5 mΩ |
| Temperature Coefficient (TCR) | 5 ppm/°C |
| Encapsulamento | Conformally coated through-hole |
| Tipo de montagem | Through-Hole |
| Coating | Conformal epoxy |
| Element Material | Bulk Metal Foil (NiCr) |
| Inductance | Low (foil geometry) |
| Long-Term Stability | Excellent (Bulk Metal Foil) |
Configuração de pinos do 200
| Pino 1 | Lead 1 — Resistive element terminal (force/sense) |
| Pino 2 | Lead 2 — Resistive element terminal (force/sense) |
Aplicações típicas
200 é adequado para 6 aplicaçãos: Battery Management Systems (BMS), Precision Laboratory Instrumentation, Aerospace Current Telemetry, Medical Monitoring Equipment, Industrial Process Control, EV Charging Station Current Sensing.
Battery Management Systems (BMS)
The Vishay 200's 5 ppm/°C TCR and 5 mΩ minimum resistance make it ideal for high-side or low-side current sensing in lithium-ion battery management systems, where coulomb-counting accuracy over thousands of charge-discharge cycles depends on shunt stability. Placed in series with the pack current path, the 200 produces a low-amplitude sense voltage that an instrumentation amplifier scales to the ADC; the foil element's low thermoelectric EMF avoids drift at low currents, where ordinary thick-film shunts introduce significant error. This directly improves state-of-charge estimation accuracy, prolonging usable pack capacity in electric vehicles and grid storage.
Recomendado
Precision Laboratory Instrumentation
In laboratory power supplies, source-measure units, and precision multimeters, the Vishay 200 functions as the reference shunt that anchors the entire measurement chain. The 5 ppm/°C TCR is essential when instruments must hold published accuracy across a 5°C to 40°C lab temperature range, and the Bulk Metal Foil element ensures that the shunt's resistance value does not drift over years of bench use. Designers typically pair the 200 with a low-offset op-amp like the ADA4622-1ARJZ-R2 or the ADS1274IPAPT ADC for sub-ppm measurement floors.
Recomendado
Aerospace Current Telemetry
Aerospace current telemetry in flight control actuators and avionics power distribution demands a current-sense resistor that holds calibration through wide temperature swings and vibration. The Vishay 200's 5 ppm/°C TCR, low inductance from its foil geometry, and conformal coating suit the harsh thermal and mechanical environment. The shunt produces a clean, low-noise sense voltage that the downstream ADC (such as the ADS1299IPAGR for higher-performance signal chains) converts into telemetry for ground-based health monitoring.
Recomendado
Medical Monitoring Equipment
In patient monitors, infusion pumps, and diagnostic imaging, the Vishay 200 supports accurate current measurement with negligible thermoelectric drift, which is critical for low-current physiological sensing applications. The 5 ppm/°C TCR ensures that long-term continuous monitoring does not introduce temperature-dependent calibration errors. The conformal coating provides protection against cleaning agents used in clinical environments, and the Bulk Metal Foil element minimizes 1/f noise compared to wire-wound alternatives that would otherwise degrade low-current ADC measurements.
Recomendado
Industrial Process Control
Industrial process control loops, motor drives, and welding equipment rely on the Vishay 200 for current feedback that survives factory floor temperature gradients and electrical noise. The 5 mΩ minimum resistance produces a useful sense voltage at hundreds of amps, and the Bulk Metal Foil element handles pulsed currents better than standard thick-film shunts. The conformal coating protects the element from flux residue and humidity in outdoor enclosures, while the low inductance prevents ringing in fast-switching motor driver applications using parts like the DRV8350HRTVR.
Recomendado
EV Charging Station Current Sensing
DC fast-charging stations require accurate current sensing at hundreds of amps with tight regulatory accuracy. The Vishay 200's 5 ppm/°C TCR and 5 mΩ value support direct shunt measurement of charging current, with the Bulk Metal Foil element delivering the long-term stability required for utility-grade energy metering. The conformal-coated package mounts easily on a heatsink or bus-bar assembly, and the low thermoelectric EMF ensures accurate readings even when adjacent power components heat unevenly across the station's operating envelope.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para 200 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | CS201 | CS203 | YAGEO-Precision-CS-5mΩ |
|---|---|---|---|---|
| Brand | Vishay Intertechnology | Vishay Intertechnology | Vishay Intertechnology | YAGEO |
| Package | Conformally coated through-hole | Conformally coated through-hole - same | Conformally coated through-hole - same | Through-hole precision - same |
| Technology | Bulk Metal Foil | Bulk Metal Foil | Bulk Metal Foil | Precision metal element |
| TCR | 5 ppm/°C | 5 ppm/°C | 5 ppm/°C | 10-15 ppm/°C (typ) |
| Minimum Resistance | 5 mΩ | 10 mΩ (typ min) | 5 mΩ | 5 mΩ |
| Coating | Conformal epoxy | Conformal epoxy | Conformal epoxy | Conformal epoxy |
| Mounting Type | Through-Hole | Through-Hole | Through-Hole | Through-Hole |
| Long-Term Stability | Excellent (Bulk Metal Foil) | Excellent | Excellent | Good |
Principais diferenciais
- Industry-leading 5 ppm/°C TCR for a low-ohm current-sense resistor (vs Standard thick-film current-sense resistors)
- Bulk Metal Foil element provides superior long-term stability (vs Wire-wound current-sense resistors)
- Low thermoelectric EMF from foil element geometry (vs Standard thick-film shunts)
Notas de projeto
Use a true 4-wire (Kelvin) connection when wiring the 200 into the measurement circuit. Run the sense traces directly to the solder pads of each lead, not to a downstream pad on the PCB. Even a few milliohms of trace or solder-joint resistance will corrupt low-ohm current-sense measurements, especially at the 5 mΩ minimum value where 1 mΩ of lead resistance equals 20% measurement error.
Estimated: at 1 A continuous current through a 5 mΩ resistor, dissipation is approximately 5 mW, which produces negligible self-heating. At 10 A, dissipation rises to 500 mW, and at 50 A it reaches 12.5 W - verify this against the datasheet power rating before committing to the design. The 5 ppm/°C TCR assumes the resistor is operating within its specified current range; self-heating above rated power will shift the effective TCR.
Place the 200 away from large heat sources such as power inductors, MOSFETs, and bus bars. Even with its 5 ppm/°C TCR, a thermal gradient of 20°C across the body will introduce a 100 ppm change in value, which at 5 mΩ is a 0.5 µΩ shift - significant in precision applications. If the application forces co-location with heat sources, consider symmetrical PCB copper to equalize the thermal gradient across the resistor body.
The Bulk Metal Foil element has low inductance compared to wire-wound shunts, but at high dI/dt (such as in welding or motor drive circuits), even small inductance can produce significant voltage transients. For switching applications above 1 kA/µs, add an RC snubber or use a twisted-pair sense wiring to minimize inductive pickup. For DC precision measurement, the low inductance is a major advantage over wire-wound alternatives.
Informações de conformidade
Compliance status not present in the verified web data; consult the Vishay product page or contact the manufacturer directly for current RoHS, REACH, lead-free, halogen-free, and conflict-minerals declarations. AEC-Q100 does not apply to a passive current-sense resistor.
