About Laird Technologies
Laird Technologies designs and manufactures customized, performance-critical products for wireless and other advanced electronics applications. The company is a global market leader in the design and supply of electromagnetic interference (EMI) shielding, thermal management products, mechanical actuation systems, signal integrity components, and wireless antennae solutions, as well as radio frequency (RF) modules and systems. Laird Technologies partners with its customers to customize product solutions for applications in many industries including: Network Equipment, Handsets, Telecommunications, Data Transfer & Information Technology, Computers, Automotive Electronics, Aerospace, Defense, Medical Equipment, Consumer Electronics, and Industrial. Laird Technologies offers its customers unique product solutions, dedication to research and development, as well as a seamless network of manufacturing and customer support facilities across the globe.
Product Attributes
- Brand: Laird Technologies
- Certifications: ISO 9001:2000
- Coating Options: Parylene (P), Epoxy (H)
- Material Types: Common Mode Materials (35, 28, 25), DC Bias Materials (36, 46, 66), High Permeability Materials for Telecom (40)
Technical Specifications
| Part Number Example | Material Designator | Initial Permeability | Typical Application | Product Type | Basic Size Description | Coating Designation |
| 35T0100-00P | 35 | 5000 | Common Mode Filtering | T (Toroidal Core) | 0100 (0.100 inches) | P (Parylene) |
| 35N0136-00P | 35 | 5000 | Common Mode Filtering | N (Balun Core) | 0136 (0.136 inches) | P (Parylene) |
| 40* | 40 | 10000 | Large toroids for very low frequency power supply filtering | T (Toroidal Core) | N/A | N/A |
| 35 | 35 | 5000 | High Permeability for Resonant Wireless Charging | N/A | N/A | N/A |
| 28 | 28 | 65 | DC Bias | N/A | N/A | N/A |
| 25 | 25 | 5000 | High Permeability for Telecom | N/A | N/A | N/A |
| 36 | 36 | 850 | Low power loss material for Telecom | N/A | N/A | N/A |
| 46 | 46 | 125 | DC Bias Standard Temperature (0 to 70 C) | N/A | N/A | N/A |
| 66 | 66 | 4500 | DC Bias Extended Temperature (-40 to 85 C) | N/A | N/A | N/A |
| 36/46 | 36/46 | 4000 | High DC Bias Extended Temperature (-40 to 85 C) | N/A | N/A | N/A |
Quality Assurance
Laird Technologies is committed to continuous improvement, focusing on enhancing the quality of products and services. Customer focus is paramount, and quality is defined by the customer. Continuous improvement is achieved through the development of people and technologies, guided by principles of unselfish service, integrity, honesty, excellence, and self-discipline. Teamwork is essential to achieving common goals.
Quality Measurement System
Laird Technologies Quality Management Systems are certified to the ISO 9001:2000 requirements by Ceramic Industry Certification Scheme Ltd.
Quality Testing Equipment
- Inductance, Loss Factor: Hewlett-Packard 4274A, 4275A, 4284A Multi-Frequency LCR Meters
- Impedance: Hewlett-Packard 4396B, 4991A Network/Spectrum Analyzers
Part Identification
Part numbers are ten characters alphanumeric, indicating material, product type, and basic size. Product types include 'T' for toroidal cores and 'N' for balun cores. The basic size description, following the product code, represents the largest dimension in thousandths of an inch. Modifiers indicate variations in thickness or specific series. Coating designations include 'P' for Parylene and 'H' for Epoxy, both with a 1000 VAC minimum Hi-Pot rating.
Standard Components - Soft Ferrite Typical Physical Constants
| Property | Value |
| Specific Heat | 0.25 cal/g/C |
| Thermal Conductivity | 10-2 cal/sec/cm/C |
| Coefficient of Linear Expansion | 8-10 x 10-6/C |
| Tensile Strength | 500 kg/cm2 |
| Compressive Strength | 4200 kg/cm2 |
| Young's Modulus | 1260 kg/cm2 |
| Hardness (Knoop) | 650 |
| Density | 4.6 to 4.9 g/cm3 |
Mechanical Tolerances
| OD - ID uncoated Tolerance | mm (inches) | OD - ID uncoated Tolerance | mm (inches) |
| < 5.05 (.199) | .127 (.005) | < 6.32 (.249) | .127 (.005) |
| 5.08 (.200) - 9.50 (.374) | .152 (.006) | 6.35 (.250) - 7.34 (.289) | .178 (.007) |
| 9.53 (.375) - 15.85 (.624) | .254 (.010) | > 7.37 (.290) | .254 (.010) |
| 15.88 (.625) - 25.37 (.999) | .381 (.015) | ||
| > 25.40 (1.000) | .508 (.020) |
Note: The first column group refers to OD-ID tolerances, and the second column group refers to HT tolerances.
Toroidal Core Coatings
Smooth, resistive coatings can be provided if required by customer applications. Standard dimensions are listed in the parts chart.
2411061537_Laird-28T0231-00P_C22172674.pdf
Please Use Our Online Inquiry Contact Form Below If You Have Any Questions, Our Team Will Get Back To You As Soon As Possible
