Resistors - Stocked & Customisable - Rhopoint Components

RARA SMF Series

Lee Waterman — Tue, 12 Nov 2024 15:22:50 +0000

The SMF Series metal film resistors offer exceptional precision and stability, making them ideal for applications that require reliable, low-noise performance in lower power settings. With power ratings of 2W and 3W and a broad resistance range from 10Ω to 2MΩ, the SMF resistors cater to a diverse array of precision circuits. Featuring tight tolerances as low as ±1% and a stable temperature coefficient of ±200 ppm/°C, they maintain accuracy across varying temperatures, which is essential for sensitive electronic applications. The flameproof UL94V0 moulded package enhances safety, ensuring the resistor withstands heat and environmental stresses. These resistors are also compatible with automatic surface mounting, optimizing production processes and supporting efficient assembly.

Key Features of SMF Series:

High-precision metal film resistor design
Power ratings available: 2W, 3W and 5W
Extensive resistance range: 10Ω to 2MΩ
Tight tolerances: ±1% and ±5%
Stable temperature coefficient: 200 ppm/°C
Flameproof UL94V0 moulded package for improved safety
Supports automatic surface mounting for efficient assembly

Application Industries and Use Cases for SMF Series:

Medical Devices: Vital for sensitive diagnostic and monitoring systems where precision is paramount
Instrumentation: Provides reliable performance in precision measurement devices
Audio Equipment: Reduces noise and enhances clarity in high-fidelity audio applications
Telecommunications: Maintains stable resistance for signal processing in networking equipment
Consumer Electronics: Precision control in sensitive circuits for electronic appliances

RARA Electronics Corporation is a renowned manufacturer specialising in industrial and braking resistors. They provide high-quality, durable resistors for various industrial applications, including power generation, transport, and renewable energy sectors, ensuring reliability and efficiency in demanding operational environments. Their products are known for performance and customisation options. Please visit www.raraohm.com for more information.

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RARA SMW Series

Lee Waterman — Tue, 12 Nov 2024 11:51:07 +0000

The SMW Series wire wound resistors provide robust, high-power performance for applications that demand reliability under challenging conditions. With power ratings up to 5W and a broad resistance range from 0.1Ω to 500Ω, these resistors are suitable for high-power circuits across a wide range of industries. Offering precision tolerances down to ±1% and a stable temperature coefficient of 200 ppm/°C, they ensure consistent and dependable operation across temperature variations. The flameproof UL94V0 molded package enhances safety by resisting extreme heat and humidity, making SMW wire wound resistors ideal for heavy-duty environments. Additionally, their compatibility with automatic surface mounting supports efficient assembly and cost-effectiveness.

Key Features of SMW Series:

High-power wire wound resistor design: 2W, 3W, and 5W
Wide resistance range: 0.1Ω to 500Ω
Precision tolerances: ±1% & ±5%
Stable temperature coefficient: 200 ppm/°C
Flameproof UL94V0 molded package for safety
Compatible with automatic surface mounting

Application Industries and Use Cases for SMW Series:

Automotive: Engine control units, power steering systems, braking systems
Industrial: Motor drives, power supplies, automation equipment
Consumer Electronics: High-power circuit management in appliances
Telecommunications: Base stations, networking equipment
Medical Devices: Diagnostic equipment, patient monitoring systems

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DTPM Adaptor Board AB126/127 Assembly

Lee Waterman — Wed, 17 Jul 2024 07:43:03 +0000

Assembly consisting of Adaptor Board AB126/127 and suitable standard SMD resistor components for a pin-compatible replacement of WSR2/3/5-series of Vishay (case size 4527), SL2/3-series of KOA (case size 4527) or SMR-series of Isabellenhuette (case size 4723)
Resistance ranges from 0.0068Ω to 3.9Ω *
Tolerances of 0.5% and 1%
Power Rating of 5W
Mounting: Reflow-, IR- and vapour phase soldering
Packaging: tape/reel accordingly to EN 60286-3
RoHS 2011/65/EU compliant
Excellent long-term stability (dR/R < ±0.5% in 2000hrs at rated power and temperature)
On request: lot inspection per MIL-PRF-55342 (scope to be determined as required)
AB126 Dimensions: 2mm x 6mm x 12mm (±0.1mm)
AB127 Dimensions: 2mm x 7.2mm x 12mm (±0.1mm)

Assembly	Power Rating P(70) [W]	Resistance value range [Ω]*	Resistance value tolerance*
AB126-2817R	5	0.0068 – 3.9	0.5%, 1%
AB127-2010DSR	5	0.051 – 1.5	0.5%, 1%
AB127-2010DPR	5	0.0068 – 0.240	0.5%, 1%

^{* Ranges are dependant on the model selected, a full list of available resistances can be found in the table below.}

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DTPM Adaptor Board AB129 Assembly

Lee Waterman — Tue, 16 Jul 2024 13:31:56 +0000

Assembly consisting of Adaptor Board AB129 and suitable standard SMD resistor components for a pincompatible replacement of SMV-series of Isabellenhuette (case size 4723)
Resistance ranges from 0.001Ω to 1Ω *
Tolerances of 0.5% and 1%
Power Rating of 4W
Mounting: Reflow-, IR- and vapour phase soldering
Packaging: tape/reel accordingly to EN 60286-3 (1,000 pcs per reel)
RoHS 2011/65/EU compliant
Excellent long-term stability (dR/R < ±0.7% in 2000hrs at rated power and temperature)
On request: lot inspection per MIL-PRF-55342 (scope to be determined as required)

^{* Ranges are dependant on the model selected, a full list of available resistances can be found in the table below.}

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Isabellenhütte BAL Series

Lee Waterman — Thu, 16 May 2024 10:33:51 +0000

The BAL current sensing precision shunt resistor series from Isabellenhütte, designed for battery management systems. This shunt resistor offers a low resistance value of 0.1mΩ/0.0001Ω. The BAL series is available with tinned or untinned terminals and a continuous load up to 350A.

Precision Shunt resistor
Resistance value of 0.1mΩ
Tolerance of ±5%
TCR of 20 ± 40 ppm/℃
Up to 12W permanent power
Continuous current load up to 350 A
AEC-Q200 qualification
Temperature range from -40°C to +170°C
Available with tinned (-Sn) or untinned terminals

_{Further details can be found on the datasheet provided}

Typical applications for the BAL current sensing precision shunt resistor series include:

Current sensor for EBM (Electronic Battery Management) in motorcars, trucks, forklifts, hybrid and electric vehicles
Current sensing in bus bars

Isabellenhütte is one of the world’s leading suppliers of high-quality precision and power resistors. They produce these low-resistance resistors for a variety of applications such as the ones above. Isabellenhütte & Rhopoint Components are your ideal partners when it comes to achieving the best possible measurement results in the smallest spaces. Please visit www.isabellenhuette.de for more information.

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Isabellenhütte WAK Series

Lee Waterman — Wed, 08 May 2024 08:37:40 +0000

The WAK current sensing precision resistor series is part of the WAx resistor family from Isabellenhütte. This resistor series offers excellent long-term stability and low thermoelectric voltages. The available resistance values 0.5 mΩ and 1 mΩ, with tolerance values of ±1% and ±5% available, and temperature coefficient of <100 and <130 ppm/°C depending on resistance value. The WAK series from Isabellenhütte also features a constant current of up to 90A (at 0.5mΩ), power rating of 4W (up to 150°C) and is suitable for reflow soldering. These resistors are AEC-Q200 qualified. Their operating temperature range is between -65°C and +175°C.

Current sensing precision resistor
Constant current up to 90A (0.5mΩ)
Resistance range from 0.0005Ω and 0.001Ω
Tolerances of ±1.0% and ±5.0%
TCR of <100 and <130 ppm/K
Power rating of 4W (up to 150°C)
AEC-Q200 qualified
Temperature range from -65°C to +175°C
Suitable for reflow soldering
Max. solder temperature up to 350 °C / 30 sec
Inductance of <0.5nH
Stability of <0.5% (T_K=110 °C) / <1% (T_K=150°C) (at rated power, deviation after 2000h)

_{Further details can be found on the product datasheet}

Typical applications for the WAK current sensing precision shunt resistor series include:

Current sensor for power hybrid applications
High current applications for the automotive market
Frequency converters
Power modules

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Isabellenhütte WAF Series

Lee Waterman — Tue, 07 May 2024 14:10:58 +0000

The WAF current sensing precision resistor series is part of the WAx resistor family from Isabellenhütte. This resistor series offers excellent long-term stability and low thermoelectric voltages. The available resistance values are 0.487 mΩ, 0.5 mΩ, 0.991 mΩ and 1 mΩ, with tolerance values of ±1% and ±5% available, and temperature coefficient 0 – 30 ppm/°C. The WAF series from Isabellenhütte also features a constant current of up to 77A (at 1 mΩ), power rating of up to 3.5W (at 140°C) and is suitable for reflow soldering. These resistors are AEC-Q200 qualified. Their operating temperature range is between -65°C and +170°C.

Current sensing precision resistor
Constant current up to 77A (1mOhm)
AEC-Q200 qualified
Resistance range from 0.000487Ω to 0.001Ω
Tolerances of ±1.0% and ±5.0%
TCR down to ±40ppm/K
Power rating up to 3.5W (at 70°C)
Temperature range from -65°C to +170°C
Max. solder temperature up to 350 °C / 30 sec
Suitable for reflow soldering
Inductance of <0.5nH
Stability of <0.5% (T_K=140 °C) / <1% (T_K=175°C) (at rated power, deviation after 2000h)

_{Further details can be found on the product datasheet}

Typical applications for the WAF current sensing precision shunt resistor series include:

Current sensor for power hybrid applications
High current applications for the automotive market
Frequency converters
Power modules

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Isabellenhütte BSS Series

Jay — Mon, 11 Dec 2023 16:40:41 +0000

The BSS current & voltage sensing resistor series from Isabellenhütte has a built-in PCB with a Molex DuraClik connector. This shunt resistor offers low resistance value of 100µΩ making these parts ideal for battery management systems (BMS) or energy storage systems (ESS). The BSS series is capable of handling a continuous load up to 450A with a power rating of 20W and a peak pulse power rating of up to ±3,500A for a maximum of 100ms. All of this is based on a package size of 8420.

Shunt resistor
Includes a Data Matrix Code (DMC) containing resistance value and TCR
Bolt down design with a Molex DuraClik connector
Resistance value of 100µΩ
Tolerance of ±5.0% (manufactured) / DMC ±0.1% (measured)
TCR of <±50 ppm/°C (+20°C to +60°C)
AEC-Q200 qualified
Temperature range from -40°C to +125°C
High pulse power rating of up to ±3,500A (100ms max)
Power rating of 20W
Inductance of <3nH
Tinned (Sn) plating and resistive element is made of Manganin® alloy
8420 Package size

Typical applications for the BSS current & voltage sensing resistor series include:

Current sensor for BMS (Battery Management Systems)
Current sensor for ESS (Energy Storage Systems)

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RARA RH50 (Inductive)

Lee Waterman — Thu, 23 Nov 2023 10:26:10 +0000

Metal clad wire wound resistor
Resistance range between 0.68Ω and 50kΩ
Insulation resistance of 20MΩ minimum
Temperature range of -55°C up to +250°C
Cement moulding within aluminium housing
Short time overload of 5 x power rating is 5 seconds
Mounts on chassis to utilise heat sink effect

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RARA RH50 (Non-Inductive)

Lee Waterman — Wed, 22 Nov 2023 15:35:54 +0000

Metal clad wire wound resistor
Resistance range between 0.2Ω and 20kΩ
Insulation resistance of 20MΩ minimum
Temperature range of -55°C up to +250°C
Cement moulding within aluminium housing
Short time overload of 5 x power rating is 5 seconds
Mounts on chassis to utilise heat sink effect

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