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HomeProductsResistorsThrough Hole ResistorsHHV-25JR-52-3M9
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HHV-25JR-52-3M9 - YAGEO

Manufacturer Part Number
HHV-25JR-52-3M9
Manufacturer
Yageo
Allelco Part Number
98D-HHV-25JR-52-3M9
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
45,945 pcs available, New & Original
Parts Description
RES 3.9M OHM 5% 1/4W AXIAL
Package
Axial
Data sheet
-
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 45945
  • Unit Price: $0.035
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $0.035 $0.04
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

HHV-25JR-52-3M9 Tech Specifications
YAGEO - HHV-25JR-52-3M9 technical specifications, attributes, parameters and parts with similar specifications to YAGEO - HHV-25JR-52-3M9

Product Attribute Attribute Value
Manufacturer Yageo
Tolerance ±5%
Temperature Coefficient -
Supplier Device Package Axial
Size / Dimension 0.094" Dia x 0.248" L (2.40mm x 6.30mm)
Series HHV
Resistance 3.9 MOhms
Power (Watts) 0.25W, 1/4W
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, Safety
Failure Rate -
Composition Metal Film

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8533.21.0090

Frequently Asked Questions(FAQ)

What makes the HHV-25JR-52-3M9 suitable for high-voltage applications compared to standard metal film resistors?
The HHV-25JR-52-3M9 is specifically engineered for high-voltage environments with a flame-retardant coating and safety-rated construction that standard resistors lack. The 3.9 MOhm resistance value paired with the 0.25W power rating creates a high impedance, low-dissipation profile that reduces thermal stress in circuits where voltage levels exceed typical low-signal applications. The metal film composition in the HHV-25JR-52-3M9 provides superior frequency stability and lower noise compared to carbon film alternatives, making it reliable for precision high-voltage dividers, sensor interfaces, and gate drive circuits where voltage transients are common.
How does the ±5% tolerance of the HHV-25JR-52-3M9 affect high-impedance circuit design?
At 3.9 MOhms, the ±5% tolerance band represents ±195 kOhms of uncertainty. In high-impedance applications like photodiode transimpedance amplifiers or electrometer inputs, this tolerance directly impacts gain accuracy and baseline drift. The HHV-25JR-52-3M9's metal film construction minimizes temperature-induced drift within its -55°C to 155°C operating range, but the initial tolerance stack remains a design constraint. For critical high-voltage dividers, designers typically parallel or series-compensate the HHV-25JR-52-3M9 with lower-value resistors to achieve tighter effective tolerance, or specify burn-in screening to reduce tolerance drift over the product lifetime.
What are the thermal considerations when using the HHV-25JR-52-3M9 in confined spaces?
The HHV-25JR-52-3M9 dissipates 0.25W maximum, which translates to a thermal load of 250 mW at rated power. The axial through-hole design (0.094" diameter × 0.248" length) allows adequate air circulation compared to surface-mount alternatives, but in potted or encapsulated assemblies, the HHV-25JR-52-3M9's thermal resistance to ambient becomes critical. At full power dissipation in still air, the resistor body temperature rise can exceed 80–100°C above ambient. Designers should verify that the HHV-25JR-52-3M9 operating temperature remains below 155°C when accounting for PCB thermal coupling, conformal coating, and enclosure convection limitations.
How does the HHV-25JR-52-3M9 compare to the HHV-25FR-52-3M9 substitute in terms of performance and availability?
The HHV-25FR-52-3M9 is listed as a direct substitute for the HHV-25JR-52-3M9, with identical electrical specifications: 3.9 MOhm resistance, ±5% tolerance, 0.25W power rating, and high-voltage flame-retardant construction. The primary difference lies in internal metal film technology or packaging batches rather than performance parameters. Both share the same -55°C to 155°C operating range and axial termination format. The HHV-25JR-52-3M9 may exhibit slightly different lead-free solder joint reliability or tape-reel packaging density depending on manufacturing date, but functional substitution is seamless for most applications. Availability and lead time often dictate preference between the two.
Why is the HHV-25JR-52-3M9 packaged in tape-and-reel format rather than bulk or tubed?
The tape-and-reel (TR) packaging of the HHV-25JR-52-3M9 is optimized for automated assembly and high-volume production workflows. This format reduces handling labor, minimizes component damage during insertion, and integrates directly with pick-and-place equipment used in through-hole or hybrid assembly lines. For low-volume or prototype applications, the HHV-25JR-52-3M9 in TR packaging still offers cost advantage over alternative formats because distributors can split reels without surcharge. The standardized TR carrier also simplifies moisture control for the MSL-1 rated HHV-25JR-52-3M9, since the sealed reel environment maintains humidity stability during storage.
Can the HHV-25JR-52-3M9 be used in AC high-voltage circuits without derating?
The HHV-25JR-52-3M9 power rating of 0.25W applies to DC or low-frequency AC conditions where heating is continuous. In AC high-voltage circuits, peak voltage stress and reactive heating must be evaluated separately. For sinusoidal AC, the RMS equivalent power dissipation is lower than peak power; however, the HHV-25JR-52-3M9's flame-retardant coating and safety rating address transient voltage spikes and arc suppression risk rather than continuous AC power. Designers should verify that the 3.9 MOhm resistance value limits AC current below the HHV-25JR-52-3M9 safe operating level, and confirm that dielectric breakdown voltage (typically 2–3 kV for this class) exceeds the AC peak voltage with margin.
What precautions are necessary when soldering the HHV-25JR-52-3M9 to minimize lead-free joint reliability risks?
The HHV-25JR-52-3M9 with RoHS3 compliance uses lead-free termination material, which requires higher soldering temperatures (250–260°C reflow peak) compared to lead-based alternatives. Extended thermal exposure during wave or hand soldering can degrade the metal film element inside the HHV-25JR-52-3M9, shifting resistance tolerance and increasing noise. Best practice includes using nitrogen-atmosphere reflow or selective wave soldering with flux that clears quickly, limiting solder joint temperature excursions. Post-solder inspection of the HHV-25JR-52-3M9 axial leads should verify clean solder meniscus without voids, since defects in the lead bond can cause intermittent connection failures under mechanical vibration in high-voltage applications.
How does the HHV-25JR-52-3M9 metal film construction reduce noise compared to carbon composition resistors in analog signal chains?
The metal film technology in the HHV-25JR-52-3M9 achieves noise levels typically 10–20 dB lower than carbon film or carbon composition resistors at the same resistance value. The 3.9 MOhm resistance is formed by laser-trimmed thin metal layers on a ceramic substrate, creating a uniform current path with minimal current crowding and defect sites that generate flicker noise. In high-impedance analog circuits such as logarithmic amplifiers or precision instrumentation front-ends, the HHV-25JR-52-3M9's low noise floor preserves signal-to-noise ratio over temperature and frequency, reducing the need for additional filtering or amplifier input stage optimization.
What is the moisture sensitivity risk for the HHV-25JR-52-3M9, and does MSL-1 rating eliminate storage precautions?
The HHV-25JR-52-3M9 carries MSL (Moisture Sensitivity Level) 1, which designates unlimited shelf life at uncontrolled humidity and temperature. This rating reflects the robust sealed construction of axial through-hole resistors compared to fine-pitch surface-mount components. However, the HHV-25JR-52-3M9 tape-reel package still benefits from cool, dry storage below 60% relative humidity to preserve solder joint quality and prevent corrosion of lead terminations during long-term inventory. Once the HHV-25JR-52-3M9 is removed from the sealed reel, standard moisture control and baking procedures are not required before soldering, eliminating a significant process cost compared to higher MSL components.
How should the HHV-25JR-52-3M9 be specified in a high-voltage divider circuit to maintain measurement accuracy across temperature?
In a precision high-voltage divider using the HHV-25JR-52-3M9, temperature coefficient and tolerance stack directly limit achievable accuracy. Although the HHV-25JR-52-3M9 temperature coefficient is not specified in typical datasheets, metal film construction ensures low drift (typically <100 ppm/°C). To maintain divider ratio accuracy across the -55°C to 155°C operating range, designers should employ matched resistor pairs or use thin-film hybrid networks for the HHV-25JR-52-3M9 equivalent, accepting trade-offs in cost and lead time. Alternatively, cascading multiple stages of 3.9 MOhm HHV-25JR-52-3M9 resistors with intermediate buffering reduces the impact of individual tolerance on overall divider accuracy.
Why does the HHV-25JR-52-3M9 specify RoHS3 compliance but show no REACH conflict?
The HHV-25JR-52-3M9 RoHS3 compliance indicates conformance to the latest EU Restriction of Hazardous Substances directive, restricting lead, cadmium, mercury, and other toxic materials in electrical equipment. REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) is a separate regulatory framework that evaluates chemical safety; the HHV-25JR-52-3M9 shows REACH Unaffected status, meaning its component materials do not trigger REACH substance lists that require supplier declaration or authorization delays. This combination allows the HHV-25JR-52-3M9 to be specified in both consumer (RoHS3-mandated) and industrial applications without regulatory documentation burden.
What is the practical voltage rating limit for the HHV-25JR-52-3M9 in a high-voltage bias network?
Although the HHV-25JR-52-3M9 datasheet does not explicitly state maximum voltage, the 3.9 MOhm resistance combined with the 0.25W power rating implies a practical voltage ceiling of approximately 1.2–1.5 kV (calculated from P = V²/R). The HHV-25JR-52-3M9 flame-retardant coating and safety-rated construction support operation above typical resistor voltage limits, but actual maximum voltage depends on the specific dielectric material and insulation geometry, typically ranging from 2–3 kV for this package class. Designers should verify the HHV-25JR-52-3M9 maximum voltage specification with the manufacturer or test prototypes at 1.5× expected bias voltage to confirm creepage and tracking safety margins.
How does the axial lead length of the HHV-25JR-52-3M9 affect PCB layout and parasitic impedance?
The HHV-25JR-52-3M9 axial leads (0.248" nominal length) introduce series inductance of approximately 0.5–1.0 nH per lead, which becomes significant in high-frequency circuits or fast transient environments. At 3.9 MOhm impedance, the inductive reactance remains negligible below 100 MHz; however, in high-voltage switching circuits or RF bias networks, the HHV-25JR-52-3M9 lead inductance can couple stray capacitance and create resonant peaking or ringing on voltage steps. Layout should minimize loop area by keeping the HHV-25JR-52-3M9 leads short and adjacent to ground planes, and consider twisted-pair routing if the resistor frequency response must remain flat across decades of frequency.

Parts with Similar Specifications

The three parts on the right have similar specifications to YAGEO HHV-25JR-52-3M9

Product Attribute HHV-25JR-52-49M9 HHV-25JR-52-390K HHV-25JR-52-3M3 HHV-25JR-52-33M
Part Number HHV-25JR-52-49M9 HHV-25JR-52-390K HHV-25JR-52-3M3 HHV-25JR-52-33M
Manufacturer Yageo YAGEO YAGEO YAGEO
Features - - - Simultaneous Sampling
Power (Watts) - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Size / Dimension - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Failure Rate - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Height - Seated (Max) - - - -
Resistance - - - -
Composition - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Series - - - -
Tolerance - - - -
Number of Terminations - - - -
Temperature Coefficient - - - -

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HHV-25JR-52-3M9 Image

HHV-25JR-52-3M9

YAGEO
98D-HHV-25JR-52-3M9

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