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HomeProductsResistorsThrough Hole ResistorsHVR3700001154FR500
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HVR3700001154FR500 - Vishay Beyschlag/Draloric/BC Components

Manufacturer Part Number
HVR3700001154FR500
Manufacturer
Draloric/Vishay
Allelco Part Number
98D-HVR3700001154FR500
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
72,993 pcs available, New & Original
Parts Description
RES 1.15M OHM 1/2W 1% AXIAL
Package
Axial
Data sheet
HVR3700001154FR.pdf
RoHs Status
ROHS3 Compliant
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Specifications

HVR3700001154FR500 Tech Specifications
Vishay Beyschlag/Draloric/BC Components - HVR3700001154FR500 technical specifications, attributes, parameters and parts with similar specifications to Vishay Beyschlag/Draloric/BC Components - HVR3700001154FR500

Product Attribute Attribute Value
Manufacturer Draloric/Vishay
Tolerance ±1%
Temperature Coefficient ±200ppm/°C
Supplier Device Package Axial
Size / Dimension 0.157" Dia x 0.394" L (4.00mm x 10.00mm)
Series HVR37
Resistance 1.15 MOhms
Power (Watts) 0.5W, 1/2W
Product Attribute Attribute Value
Package / Case Axial
Package Tape & Reel (TR)
Operating Temperature -55°C ~ 155°C
Number of Terminations 2
Height - Seated (Max) -
Features Flame Retardant Coating, High Voltage, Pulse Withstanding, Safety
Failure Rate -
Composition Metal Film

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) Not Applicable
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8533.21.0090

Frequently Asked Questions(FAQ)

What makes the HVR3700001154FR500 suitable for high-voltage circuits compared to standard film resistors?
The HVR3700001154FR500 is specifically rated for high-voltage applications with pulse-withstanding capability, distinguishing it from general-purpose metal film resistors. The 1.15 MOhm resistance value at 0.5W places this component in the regime where voltage stress becomes the limiting design factor rather than power dissipation. Standard film resistors lack the structural reinforcement and dielectric qualification needed to survive transient overvoltage events. The HVR3700001154FR500's flame-retardant coating and safety-grade construction provide additional protection during fault conditions, making it suitable for circuits where resistor failure must not propagate secondary hazards.
How does the ±1% tolerance of the HVR3700001154FR500 affect precision analog circuit design?
The ±1% tolerance specification of the HVR3700001154FR500 enables predictable biasing and signal conditioning in analog circuits without post-trim calibration. At 1.15 MOhm, a ±1% tolerance band spans 11.5 kOhm, which remains acceptable for input impedance matching, transimpedance amplifier feedback, and high-impedance sensor signal paths where leakage current is already a concern. For precision applications requiring tighter tolerance, the HVR3700001154FR500 can be used in ratiometric configurations where two HVR3700001154FR500 units track temperature drift together, or combined with adjustable networks. The ±200 ppm/°C temperature coefficient means that across the -55°C to 155°C operating range, the resistance can drift approximately ±2.8%, which is larger than the initial tolerance and must be accounted for in circuits with stringent DC gain or time-constant requirements.
Why is the temperature coefficient of ±200 ppm/°C relevant when selecting the HVR3700001154FR500 for automotive or industrial applications?
Automotive and industrial environments expose the HVR3700001154FR500 to extreme temperature swings, from cold-start conditions near -40°C to underhood or thermal-chamber peaks approaching 150°C. Over a 195°C span, the ±200 ppm/°C specification introduces a cumulative drift of approximately ±3.9% in the 1.15 MOhm value. In time-constant circuits (RC filters, integrators, precision oscillators), this temperature-induced resistance change directly affects circuit behavior, shifting cutoff frequencies or integration rates by several percent. For high-impedance measurement circuits, the HVR3700001154FR500's temperature coefficient compounds with sensor drift, requiring either temperature compensation logic or selection of temperature-compensated sensor bridges that inherently minimize net drift. Applications in power-supply control loops may require the HVR3700001154FR500 to be paired with compensating elements to maintain regulation accuracy across the full operating range.
How does the 0.5W power rating of the HVR3700001154FR500 relate to continuous versus pulse operation?
The 0.5W continuous power rating of the HVR3700001154FR500 establishes the thermal steady-state limit at an assumed ambient temperature and convection model. At 1.15 MOhm, achieving 0.5W dissipation requires approximately 24 kV applied across the resistor, indicating this component is designed for high-voltage, low-current paths rather than power-handling applications. The pulse-withstanding designation of the HVR3700001154FR500 signals that it can tolerate transient voltage spikes and current surges exceeding the continuous rating for short durations without permanent performance degradation. In flyback converter snubber networks, precision high-voltage dividers, and ESD protection circuits, the HVR3700001154FR500 operates in pulse mode where peak power can exceed 0.5W for microseconds or milliseconds, then cool between events. Design calculations for the HVR3700001154FR500 must distinguish between average dissipation (which includes duty-cycle reduction) and instantaneous power limits, particularly in circuits with recurring transient events.
What is the difference between the HVR3700001154FR500 and a standard 1% metal film resistor for medical device applications?
Medical devices frequently encounter strict regulatory requirements for component safety and reliability. The HVR3700001154FR500 carries RoHS3 compliance and is REACH-unaffected, satisfying environmental directives. More critically, the HVR3700001154FR500 integrates flame-retardant coating and safety-grade designation, which imply compliance with IEC 60227 or similar standards for dielectric strength and flammability. Standard metal film resistors meeting merely ±1% tolerance but lacking flame-retardant construction do not address fault-containment requirements in medical circuits where resistor rupture or thermal runaway must not endanger the patient. The HVR3700001154FR500's high-voltage and pulse-withstanding ratings provide additional margin in defibrillator charging circuits, patient isolation networks, and diagnostic measurement branches where transient voltage immunity is a regulatory expectation, not an optional feature.
Can the HVR3700001154FR500 be used as a direct replacement in legacy designs, or are there compatibility concerns?
The HVR3700001154FR500 in axial package form factor maintains mechanical and electrical compatibility with vintage through-hole designs from the 1980s–2000s that specified high-voltage resistors. However, direct substitution requires verification of thermal derating curves; older designs may have assumed lower power dissipation limits or different temperature coefficients for predecessor resistor families. The HVR3700001154FR500's flame-retardant coating and pulse-withstanding properties exceed many legacy specifications, which typically did not emphasize these attributes. If a legacy design operates at or near the 0.5W limit at elevated ambient temperatures, the HVR3700001154FR500 may dissipate more heat than the original component due to tighter process control, potentially requiring PCB layout adjustments to maintain thermal margins. Conversely, the superior reliability of the HVR3700001154FR500 makes it a recommended upgrade for end-of-life production transitions, provided the circuit topology remains unchanged.
How should the axial package dimensions of the HVR3700001154FR500 influence PCB layout and spacing decisions?
The HVR3700001154FR500 measures 0.157" diameter and 0.394" in length (4.00 mm × 10.00 mm), requiring adequate clearance on PCBs designed for surface-mount or mixed technology. In high-density layouts, the axial package occupies dual hole sites spaced approximately 10 mm apart, consuming vertical layer area that SMD components would not. Heat dissipation from the HVR3700001154FR500 radiates from the cylindrical body; placement in confined cavities or under conformal coatings reduces convection efficiency, necessitating thermal derating. For high-voltage circuits, the 0.157" diameter of the HVR3700001154FR500 should maintain clearance from adjacent traces to prevent creepage violations; IEC 60664-1 spacing rules typically require 2–5 mm air gaps at 1.15 MOhm voltage levels. Mechanical vibration environments require strain relief or mounting clips for the HVR3700001154FR500 to prevent flex cracking at solder joints; the 0.394" length creates a cantilever beam that amplifies vibration-induced stress compared to shorter components.
What leakage current behavior should be expected from the HVR3700001154FR500 in precision high-impedance circuits?
Metal film resistors like the HVR3700001154FR500 exhibit leakage currents arising from the oxide layer between the metal film and termination connections, typically in the picoampere range at room temperature. At 1.15 MOhm, even picoampere leakage translates to microvolts of offset error in transimpedance amplifiers, requiring careful PCB layout and guard-ring routing around the HVR3700001154FR500 to minimize surface leakage from humidity and contamination. The HVR3700001154FR500's leakage current increases exponentially with temperature; operation at 155°C can increase leakage by 5–10× compared to 25°C, introducing significant error in precision current-to-voltage converters. In low-level measurement applications, the HVR3700001154FR500 should be paired with low-input-bias operational amplifiers (typically <1 pA), and PCB humidity barriers or silicone conformal coatings are essential to prevent dominant-mode failure from surface leakage rather than the resistor's intrinsic performance.
How does the HVR3700001154FR500 perform in switching power supply feedback dividers compared to carbon film alternatives?
Switching power supplies operating at frequencies from 100 kHz to several megahertz require feedback dividers with minimal AC impedance distortion and stable DC resistance. The HVR3700001154FR500, as a metal film component, exhibits negligible frequency-dependent resistance change across the switching frequency spectrum, whereas carbon film resistors exhibit self-resonance and Q-factor effects that introduce phase shift in feedback paths. At 1.15 MOhm, the HVR3700001154FR500 is often paired with a lower-value resistor in a divider network; the metal film construction ensures that the HVR3700001154FR500's ±1% tolerance remains stable across the supply's load transient bandwidth, preventing loop instability from ratiometric drift. The pulse-withstanding specification of the HVR3700001154FR500 addresses overvoltage events during converter startup or fault conditions, whereas carbon film resistors may undergo permanent resistance shifts or open-circuit failures. For isolated feedback topologies using optocouplers, the HVR3700001154FR500's predictable leakage current simplifies biasing calculations compared to carbon alternatives with variable leakage characteristics.
What are the failure modes and expected lifetime for the HVR3700001154FR500 under accelerated stress testing?
The HVR3700001154FR500, as a metal film resistor with flame-retardant coating, follows failure modes including gradual resistance drift from thermal cycling, open-circuit failure from solder-joint cracking or lead fatigue, and rare catastrophic failure from sustained overvoltage above the high-voltage rating. Accelerated life testing per MIL-PRF-26 or similar standards applies temperature cycling (-55°C to +155°C), elevated temperature bake (125°C, 1000 hours), and humidity conditioning to assess degradation. The HVR3700001154FR500's ±1% tolerance degrades more slowly than lower-quality alternatives; typical drift rates are <0.5% after 1000 thermal cycles. The pulse-withstanding property of the HVR3700001154FR500 ensures that single overvoltage transients do not degrade the component; however, repeated transient stress or sustained voltage near the maximum rating can precipitate incremental resistance increase or insulation breakdown. In industrial applications requiring >10-year service life, the HVR3700001154FR500 demonstrates superior reliability compared to generic film resistors when operated within rated stress limits and environmental conditions.
How should the HVR3700001154FR500 be handled and stored to prevent performance degradation before circuit assembly?
The HVR3700001154FR500 is not subject to moisture sensitivity level (MSL) classification, indicating that ambient humidity does not degrade the component during storage or handling. However, the metal film construction is sensitive to mechanical damage and oxidation of termination surfaces; the HVR3700001154FR500 should be stored in dry conditions (below 80% relative humidity) and handled with care to prevent lead contamination or solder-layer oxidation. Static electricity poses minimal risk to the HVR3700001154FR500 itself, but lead bending during manual assembly can fracture the metal film near terminations, introducing intermittent opens or high-resistance connection points that mimic resistor drift. For high-volume production, automated insertion equipment reduces mechanical stress on the HVR3700001154FR500 compared to manual placement. Wave soldering of the HVR3700001154FR500 requires thermal profiling to prevent thermal shock; rapid heating above 260°C can cause the axial leads to expand at different rates than the ceramic substrate, inducing micro-cracking within the metal film layer that increases long-term failure rates.
What is the significance of the HVR3700001154FR500's RoHS3 and REACH compliance for procurement and supply-chain planning?
RoHS3 compliance for the HVR3700001154FR500 confirms the absence of lead, cadmium, mercury, and other restricted substances, meeting European Union and similar international directives for end-of-life recycling and environmental safety. REACH-unaffected status indicates the HVR3700001154FR500 is not subject to substance pre-registration or authorization requirements, simplifying compliance documentation and reducing supply-chain risk. For manufacturers serving automotive (RoHS3, WEEE) or medical (ISO 14971) markets, the HVR3700001154FR500's compliance status eliminates substitution risk from non-compliant alternatives, particularly relevant for long-lifecycle products (>10 years) where component discontinuation or supply disruption forces redesign. The HVR3700001154FR500's ECCN EAR99 classification simplifies export licensing; no additional government approval is required for shipments to most countries. However, procurement teams must verify that the specific lot or batch of HVR3700001154FR500 units retains compliance documentation, as material composition changes can occur across production facilities or time periods without visible changes to the external component marking.

Parts with Similar Specifications

The three parts on the right have similar specifications to Vishay Beyschlag/Draloric/BC Components HVR3700001154FR500

Product Attribute HVR3700001134FR500 HVR3700001184FR500 HVR3700001104FR500 HVR3700001153FR500
Part Number HVR3700001134FR500 HVR3700001184FR500 HVR3700001104FR500 HVR3700001153FR500
Manufacturer Vishay Beyschlag/Draloric/BC Components Vishay Beyschlag/Draloric/BC Components Vishay Beyschlag/Draloric/BC Components Vishay Beyschlag/Draloric/BC Components
Series - - - -
Failure Rate - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Features - - - Simultaneous Sampling
Tolerance - - - -
Power (Watts) - - - -
Temperature Coefficient - - - -
Height - Seated (Max) - - - -
Number of Terminations - - - -
Composition - - - -
Size / Dimension - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Resistance - - - -

HVR3700001154FR500 Datasheet PDF

Download HVR3700001154FR500 pdf datasheets and Vishay Beyschlag/Draloric/BC Components documentation for HVR3700001154FR500 - Vishay Beyschlag/Draloric/BC Components.

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HVR3700001154FR500 Image

HVR3700001154FR500

Vishay Beyschlag/Draloric/BC Components
98D-HVR3700001154FR500

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