Product Overview

The XRRF7342 series of SMD Coupling Inductors are designed for high-performance applications. Featuring tight coupling (k 0.97) and 200V isolation, they are ideal for flyback, multi-output buck, and SEPIC circuits. These inductors offer high inductance, high efficiency, and excellent current handling in a cost-effective and rugged package. They can also be configured as two single inductors in series or parallel, a common mode choke, or a 1:1 transformer.

Product Attributes

• Brand: DONGGUAN XIANGRU ELECTRONICS CO.,LTD
• Origin: China (implied by company location)
• Material: Ferrite core; Termination: RoHS compliant matte tin over nickel over phos bronze (standard)
• Certifications: RoHS compliant (implied by termination description)

Technical Specifications

Notes on Technical Specifications:

• 1. Termination: Standard is RoHS compliant matte tin over nickel over phos bronze. Special orders include RoHS tin-silver-copper (95.5/4/0.5) or non-RoHS tin-lead (63/37).
• 2. Inductance is shown for each winding, measured at 100 kHz, 0.1 Vrms, 0 Adc. When leads are connected in parallel, inductance is the same. When leads are connected in series, inductance is four times the value.
• 3. DCR is for each winding. When leads are connected in parallel, DCR is half the value. When leads are connected in series, DCR is twice the value.
• 4. SRF measured using an Agilent/HP 4191A or equivalent. When leads are connected in parallel, SRF is the same value.
• 5. Leakage inductance is for L1 and measured with L2 shorted.
• 6. DC current at which inductance drops the specified amount from its value without current. It is the sum of current flowing in both windings.
• 7. Irms (A) at 20% drop.
• 8. Irms (A) at 30% drop.

Additional Product Information

• Core Material: Ferrite
• Weight: 0.76 0.87g
• Ambient Temperature: 40C to +85C (with 40C rise) Irms current
• Maximum Part Temperature: +125C (ambient + temp rise)
• Storage Temperature: Component: 40C to +125C; Tape and reel packaging: 40C to +80C
• Winding to Winding Isolation: 200 Vrms, one minute
• Resistance to Soldering Heat: Max three 40 second reflows at +260C, parts cooled between cycles
• Moisture Sensitivity Level (MSL): 1 (unlimited floor life at <30C / 85% relative humidity)
• Failures in Time (FIT) / Mean Time Between Failures (MTBF): 38 per billion hours / 26,315,789 hours
• Packaging: 250/7 reel; 1000/13 reel. Plastic tape: 16 mm wide, 0.4 mm thick, 12 mm pocket spacing, 4.9 mm pocket depth.
• PCB Washing: Tested to MIL-STD-202 Method 215 plus an additional aqueous wash.