-
- News
- Books
Featured Books
- smt007 Magazine
Latest Issues
Current IssueBox Build
One trend is to add box build and final assembly to your product offering. In this issue, we explore the opportunities and risks of adding system assembly to your service portfolio.
IPC APEX EXPO 2024 Pre-show
This month’s issue devotes its pages to a comprehensive preview of the IPC APEX EXPO 2024 event. Whether your role is technical or business, if you're new-to-the-industry or seasoned veteran, you'll find value throughout this program.
Boost Your Sales
Every part of your business can be evaluated as a process, including your sales funnel. Optimizing your selling process requires a coordinated effort between marketing and sales. In this issue, industry experts in marketing and sales offer their best advice on how to boost your sales efforts.
- Articles
- Columns
Search Console
- Links
- Events
||| MENU - smt007 Magazine
TT Electronics Metal Alloy Resistors are AEC-Q200 Qualified
February 22, 2018 | TT ElectronicsEstimated reading time: 2 minutes
TT Electronics has announced the LRMAP5930 series of low resistance, metal alloy current sense power resistors. With values down to 200μΩ and a corresponding power rating on standard FR4 PCB of up to 10W, the maximum measurable current is over 200A, and hence in most cases restricted only by the capacity of the PCB tracks. A 50% higher power rating of 15W can be achieved for assemblies mounted on a thermal substrate such as direct bonded ceramic (DBC) or insulated metal substrate (IMS), making these resistors ideal for hybrid modules.
Aimed at designers of power supplies and motor drives in the industrial, automotive and medical industries, TT Electronics’ LRMAP5930 high power shunt resistors are ideal in the specific areas of regulating current flow, detecting stalled motors and particularly, measuring power consumption. The growth of electrical drives and actuators in industrial and automotive applications has witnessed a parallel growth in the need to monitor and minimise energy usage. The LRMAP5930 is AEC-Q200 qualified for the automotive market while other applications include power supplies, battery monitoring and process control.
LRMAP5930 resistance values range from 200μΩ to 2mΩ and the resistors feature a high surge energy capability of up to 33J. Robust, they are formed from a continuous band of E‑beam welded precision resistive strip, and various alloys are used based on the resistance value. The metal element shunt parts withstand all normal industrial solvents suitable for cleaning printed circuits and for ease of identification are marked ‘5930’; alloy type, ohmic value and tolerance.
The surface mount shunt resistors’ low thermal impedance minimises the temperature rise and enhances the reliability of the assembly, while their high surge tolerance gives reliable product performance under inrush and momentary short circuit conditions. Their good long term stability of value, low TCR (temperature coefficient of resistance) and low thermal EMF collectively mean that only a small part of the designer’s error budget is consumed, enabling more design freedom elsewhere in the circuit.
For circuit designers who need to guarantee stable and accurate sensing of AC and DC currents up to 200A in SMT assemblies, TT Electronics’ LRMAP5930 high power shunt resistors match or surpass the power ratings of key competitors’ parts in most ohmic values. It is important that specifiers and designers make power rating comparisons taking mounting conditions into account. TT Electronics clearly defines these on the resistors’ datasheet that presents dual ratings based on standard FR4 PCB and thermal substrate mounting types.
Suggested Items
IDTechEx Examines the Opportunities for Wearables in Digital Health
04/19/2024 | IDTechExIDTechEx’s report, “Digital Health and Artificial Intelligence 2024-2034: Trends, Opportunities, and Outlook”, covers this ongoing trend in the consumer health wearables market and includes analysis of the opportunities and roadmap for biometric monitoring.
ZESTRON Welcomes Whitlock Associates as New Addition to their Existing Rep Team in Florida
04/19/2024 | ZESTRONZESTRON, the leading global provider of high-precision cleaning products, services, and training solutions in the electronics manufacturing and semiconductor industries, is thrilled to announce the addition of Whitlock Associates to its esteemed network of sales representatives.
IPC Bestows Posthumous Hall of Fame Award to Industry Icon Michael Ford
04/18/2024 | IPCIPC honored the late Michael Ford, Aegis Software, for his extraordinary contributions to the global electronics manufacturing industry with the IPC Raymond E. Pritchard Hall of Fame Award at IPC APEX EXPO 2024. IPC’s most prestigious honor, the Hall of Fame Award is given to individuals who have provided exceptional service and advancement to IPC and the electronics industry. Ford, an industry leader and valued IPC volunteer, died suddenly in January 2024.
SEMI Applauds U.S. Chips Act Award for Samsung Electronics Facilities to Strengthen Domestic Semiconductor Supply Chain
04/17/2024 | SEMISEMI, the industry association serving the global electronics design and manufacturing supply chain, applauded the United States Department of Commerce’s announcement of a Preliminary Memorandum of Terms for an award under the CHIPS and Science Act to support the expansion of Samsung Electronics’ presence in Texas and the company’s development and production of leading-edge chips.
Northrop Grumman honors Calumet Electronics with Supplier Excellence Award
04/17/2024 | Calumet ElectronicsNorthrop Grumman Corporation has recognized Calumet Electronics during the company’s 2024 Supplier Excellence Awards for “exceptional performance and unwavering commitment to delivering with excellence.” Calumet is one of 70 suppliers recognized from across the globe. In its award category of “Supplier Strategic Excellence,” Calumet was honored alongside global corporations such as Amazon Web Services, Dell Technologies, and Eaton Corporation.