PHILCO 305-1837 Oil Filled Capacitor Tube Radio Filter Cap 4UF 600VDC

( Brand: Philco ), ( Manufacturer Part Number: 305-1837 ), ( Part Type: Oil ), ( Country Of Origin: United States )

Review PHILCO Vintage Oil Filled Capacitor 4uf 600vdc Tube Radio Filter Cap

The Philco 305-1837 is a high-performance oil-filled capacitor specifically designed for use as a filter capacitor in tube radio applications. With a capacitance value of 4 microfarads (4 F), this capacitor can effectively filter and stabilize the voltage supply in vintage radio circuits.

The voltage rating of this capacitor is an impressive 600 Volts DC, making it suitable for use in high voltage tube radio applications. The use of oil as the dielectric medium ensures that the capacitor can handle large electrical surges and discharges without breaking down or failing.

This oil-filled capacitor is a robust and reliable solution for radio enthusiasts, collectors, and restorers seeking to bring their vintage tube radios back to life. Its large size, approximately 5.5 inches long, 3 inches wide, and 3 inches tall, is a testament to its ability to handle the high energy demands of tube radio circuits.

The Philco 305-1837 is meticulously crafted to meet the highest standards of quality. Its sturdy construction features a heavy-duty metal can with a securely sealed porcelain window that allows for visual inspection of the oil level. The capacitor's terminals are made of solid brass, ensuring excellent electrical contact and durability.

The oil-filled design of this capacitor also provides an added benefit of self-healing, as the oil acts as a dielectric and absorbs any electrical discharges that may occur, allowing the capacitor to recover quickly from overloads.

In summary, the Philco 305-1837 oil-filled capacitor is an essential component for any vintage tube radio restoration project. Its high capacitance value, impressive voltage rating, robust construction, and self-healing properties make it an indispensable tool for ensuring the optimal performance and longevity of classic radio equipment.

Philco 305-1837 Oil-Filled Capacitor: A Detailed Analysis

The Philco 305-1837 is an oil-filled capacitor specifically designed for use in tube radio applications. Here's a balanced assessment of its features, advantages, and potential drawbacks.

1. Oil-filled design: This type of capacitor is known for its stability and long lifespan due to the insulating properties of the oil.

2. High voltage rating (600VDC): Suitable for use in high-voltage radio applications.

3. Capacitance value (4 F): Ideal for filtering and smoothing out voltage fluctuations in tube radio circuits.

1. Stability: The oil-filled design provides excellent temperature stability, ensuring consistent performance over a wide range of operating temperatures.

2. Long lifespan: The oil-filled design also contributes to a longer lifespan compared to other types of capacitors.

3. High voltage handling: The 600VDC rating makes it suitable for use in high-voltage radio applications.

4. Smoothing out voltage fluctuations: The 4 F capacitance value is ideal for filtering and smoothing out voltage fluctuations in tube radio circuits.

1. Size and weight: Oil-filled capacitors are typically larger and heavier than other types, which might be a consideration for those with limited space or portability requirements.

2. Cost: Oil-filled capacitors generally cost more than other types due to their specialized design and materials.

3. Leakage risk: Although rare, there is a risk of oil leakage if the capacitor is damaged or subjected to extreme temperatures or shock.

The Philco 305-1837 oil-filled capacitor is a high-quality component suitable for use in tube radio applications requiring stability, long lifespan, and high voltage handling. While it comes with some size, weight, and cost considerations, these factors are often outweighed by the advantages it brings to the table.

If you're working on a vintage tube radio or other high-voltage application that requires a reliable and long-lasting capacitor, the Philco 305-1837 oil-filled capacitor is an excellent choice. While it may be more expensive and heavier than other options, its stability, long lifespan, and high voltage handling capabilities make it a worthwhile investment for those seeking optimal performance.

Details:

Vintage Philco 305-1837 Oil Filled Capacitor 4uF 600VDC Tube Radio Filter Cap, FOR PARTS: vintage cap: scuffs, scratches, dusty, dirty: used Scuffs, dirty;.

part #: 3051837 price

• $20.69

specifications vintacapacitor:

• brand: Philco
• mpn: 305-1837
• part type: Oil
• country of origin: United States

shipping vintacapacitor:

• type: Calculated
• transit: 3-7 Days
• cost: $7.57
• class: Standard
• service: USPS Ground Advantage
• carrier: USPS

payments vintacapacitor:

• wallet: Paypal
• credit card: Mastercard
• other

seller vintacapacitor:

• # reviews: 3753
• city: Saint Cloud, Wisconsin
• rating: 100.0%

returns vintacapacitor:

• time: 30 Days
• method: Money back
• policy: Returns Accepted
• paid by: Seller

offer vintacapacitor:

• best offers: True
• availability: In Stock
• options: Ship-to-home
• quantity: 1
• started: April 14, 2026
• sold: 0

general vintacapacitor:

• Vintage Audio Video > Vintage Parts Accessories > Vintage Capacitors
• condition: For parts or not working

Philco 305-1837 Is Similar To:

• Philco 358-3164 Dual 7.5 Pf Vintage Variable Tuning Capacitor Picofarad (51.4% similar) Vintage used Philco 358-3164 2 section air variable capacitor. About 2.25 inches including shaft by 2/1 .625 inches, 3 ounces. Pencil marked 7.5 UHF, each section measured at 5 Pickford's /- 4 Pickford's. 0.25 inch shaft for knob...(June 6th, 2024)
• Philco 83-0035 Vibrator Capacitor (41.8% similar) Philco 83-0035 capacitor...(June 14th, 2024)
• Philco 30-2584-15 1 X Capacitor 3-part 10-100-20 Mfd 450-300-300 Volt (45.2% similar) 1 x Philco capacitor, 30-2584-15, used - 3-PART, 10-100-20 450-300-3 untested sold as-is, parts/repair capacitor...(July 30th, 2024)
• Philco 4039 Air Variable Capacitor 20-400pf Each Section (49.6% similar) Part #: Philco 4039 for sale...(November 19th, 2024)
• Philco 31-2790-2z Air Variable Capacitor (44.4% similar) Used and in good working condition...(May 4th, 2025)
• Philco 30-4686-43 2 Ea Vintage 022 Uf 400v Molded Axial Capacitors Usa Made Nos (52.2% similar) This listing is for 2 ea Philco vintage .022 uf 400V axial capacitors USA made, on a cap checker 1 measures .0254 2ND -0261...(September 25th, 2025)
• Philco Sylvania 41-16025-30 Nos Vintage Can Capacitor 240 200v 250 100v 500 500uf 50v 30-2626-15 (45.1% similar) Nos vintage can capacitor: 240UF 200V, 250UF 100V: 2x 500UF 50V: Philco 30-2626-15: -> no mounting hardware included checked for capacitance checked capacitance...(September 29th, 2025)
• Philco Sylvania 30-2590-52 Nos Vintage Can Capacitor 200 150v 80-20-20uf 300v (46.8% similar) Nos vintage can capacitor: 200 150V, 80-20-20UF 300V: Philco 30-2590-52: -> no mounting hardware included checked for capacitance checked capacitance...(October 2nd, 2025)
• Philco 30-2078-x 4 Vintage Can Filter Capacitors And Brackets 1940s (45.8% similar) These are multi-section caps. Offered are the following: 30-2078-X, 30-2150-X, 30-2150S and 30-2201A. Mouse over the photo images to zoom in. Offered are 4 Philco can type filter capacitors. The cans are all 1-3/8 inch in diameter. Not tested and offered strictly as is due to age for...(January 2nd, 2026)
• Philco 30-2236s 6 Vintage Aluminum Can Filter Capacitors (54.1% similar) These are single-section caps. Offered are the following: 30-2236S, 30-2236A, 30-2118S, 30-2174S, 30-2235A and 30-2118A. The 30-2118A is an empty can. No mounting brackets are included. Likely late 1930S or early 1940S vintage. Not tested and offered strictly as is due to age for parts...(January 2nd, 2026)
• Philco 30-2629-6 Can Electrolytic Cap 200 50 400 2000 Mfd Nos 30-2629-8 (35.1% similar) Part #: Philco 30-2629-6 for sale...(February 19th, 2026)