Cylindrical Style EMI Filters BL Series – .375 Dia. – Button Epoxy Sealed – Circuits Available – C & L APPLICATIONS The BL series offers effective filtering from 30 KHz up through 1 GHz. It offers epoxy resin seals on both ends in order to optimize volumetric efficiency and reduce cost. Where severe moisture environments exist the slightly larger companion BK series is recommended as it incorporates a glass to metal hermetic seal at both ends. The BL series is designed for bulkhead mounting in a slotted hole with nut and lockwasher supplied. This series is ideal for low to medium impedance circuits where large amounts of capacitance to ground can be tolerated. In the “L” section version an internal ferrite bead element provides both inductance and series resistance (lossy characteristic) which improves insertion loss at lower current ratings and provides superior transient performance. Alternate lead configurations or special capacitance values may be ordered. Custom packages or filter arrays utilizing the BL series can be furnished. CHARACTERISTICS • Internal ferrite bead provides inductance for the L-section version. • High DC current rating: 15 Amps. SPECIFICATIONS 1. Case/Terminal Plating: Electro-tin standard – Gold or silver available 2. Material: Case: Brass Standard – Steel available End Seal: Epoxy Terminals: Copper nailhead standard 3. Operating Temperature Range: -55°C to +125°C 4. Electrical Characteristics: A. Rated Voltage: See chart B. Insulation Resistance: At 25°C: 1,000 megohm-microfarad min., or 50,000 megohms min., whichever is less, at the rated DC voltage At 125°C: 100 megohm-microfarad min., or 5,000 megohms min., whichever is less C. Dielectric Withstanding Voltage (DWV): R-level designs: 2.0 times rated DC voltage Class B designs: 2.5 times rated DC voltage D. Capacitance: Values listed in chart are “guaranteed minimum value” (GMV) 5. Marking: Standard Marking: AVX, AVX part number, lot code BL2 only: Letter “L” denotes ferrite bead inductor at threaded end See Reliability Codes section for definition of Reliability Level marking. See How to Order section for part number construction. 6. Installation: A. Mounting Torque: 44 oz-in. ± 4 oz-in. B. Refer to “Installation, Handling, Hardware Options” section of the catalog. STANDARD CONFIGURATION 250-28 UNF-2A (1/4-28) .375 ±.010 .050 .040 ±.010 .200 ±.010 .150 ±.032 * = A FOR .187 ±.010 THREAD B FOR .312 THREAD (See Note 1) .060 REF. .030 ±.010 * ±.010 .150 MAX. .280 ±.032 CIRCUIT DIAGRAMS THRD END C BL1 millimeters (inches) .25 .76 .81 1.02 1.52 (.010) (.030) (.032) (.040) (.060) 2.54 3.81 4.57 5.08 9.53 (.100) (.150) (.180) (.200) (.375) L2 BL2 (See Note 1) Notes: 1. All BL2 L-Section Filters have inductor (bead) at threaded end. 2. Metric equivalent dimensions given for information only. (See Note 2) 29 Cylindrical Style EMI Filters BL Series – .375 Dia. – Button Epoxy Sealed – Circuits Available – C & L SPECIFICATIONS AVX P/N BL1CA-754 BL1CA-105 BL1CA-125 BL1CA-145 BL2CA-754 BL2CA-105 BL2CA-125 BL2CA-145 BL1AA-504 BL1AA-754 BL1AA-105 BL1AA-125 BL2AA-504 BL2AA-754 BL2AA-105 BL2AA-125 BL1BA-103 BL1LA-753 BL1LA-154 BL2BA-103 BL2LA-753 BL2LA-154 CKT C C C C L2 L2 L2 L2 C C C C L2 L2 L2 L2 C C C L2 L2 L2 CAP1 .75 1.0 1.2 1.4 .75 1.0 1.2 1.4 .50 .75 1.0 1.2 .50 .75 1.0 1.2 .01 .075 .15 .01 .075 .15 DC Voltage 50 50 50 50 50 50 50 50 100 100 100 100 100 100 100 100 200 200* 200* 200 200* 200* * Also rated 125 VAC/400 Hz 1 Decimal point values indicate capacitance in microfarads. Non-decimal point values indicate capacitance in picofarads. 2 Insertion loss limits are based on theoretical values. Actual measurements may vary due to internal capacitor resonances and other design constraints. 30 30 KHz 11 12 15 15 11 12 15 15 6 11 12 15 6 11 12 15 – – – – – – Insertion Loss2 Per MIL-STD-220, +25°C 150 300 1 10 100 KHz KHz MHz MHz MHz 24 30 40 40 64 24 30 40 40 65 28 33 40 40 70 28 33 40 40 70 24 30 40 40 64 24 30 40 40 65 28 33 40 40 70 28 33 40 40 70 19 25 36 40 60 24 30 40 40 64 24 30 40 40 65 28 33 40 40 70 19 25 36 40 60 24 30 40 40 64 24 30 40 40 65 28 33 40 40 70 – – 2 20 40 – 7 18 37 46 10 16 26 40 52 – – 2 20 40 – 7 18 37 51 10 16 26 40 52 1 GHz 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 55 70 70 55 70 70