Mallory Capacitors — Legacy Stock & Modern Equivalents
P.R. Mallory capacitors are now part of KEMET/Yageo. Specap sources original Mallory electrolytic capacitors and provides cross-reference matching to modern KEMET equivalents for restoration, maintenance, and production needs.
Original Mallory Electrolytics
Access to remaining original Mallory electrolytic capacitors for restoration and legacy maintenance applications.
Vintage Equipment Restoration
Specialized sourcing for vintage audio, radio, and industrial equipment requiring original Mallory components.
KEMET Cross-Reference
Spec-based matching from Mallory part numbers to current KEMET/Yageo equivalents with verified compatibility.
Bulk Legacy Orders
Volume sourcing support for maintenance programs requiring discontinued Mallory capacitor inventory.
The History of P.R. Mallory & Co.
P.R. Mallory & Co. was founded in 1916 by Philip Rogers Mallory in Indianapolis, Indiana. The company initially focused on tungsten products before expanding into batteries (the Duracell brand originated from Mallory) and electronic components. By the mid-20th century, Mallory had become one of the leading American manufacturers of electrolytic capacitors.
Mallory capacitors earned a reputation for durability and consistent performance across a wide temperature range. Their electrolytic capacitors were extensively used in military equipment during World War II and the Cold War era, establishing a legacy of quality that persists in collector and restoration markets today.
In the 1980s, Emerson Electric acquired P.R. Mallory. The capacitor product lines were eventually absorbed into KEMET Corporation, which was later acquired by Yageo in 2020. While original Mallory-branded capacitors are no longer manufactured, Specap maintains sourcing channels for NOS (new old stock) Mallory parts and provides cross-reference matching to modern KEMET/Yageo equivalents.
Popular Mallory Capacitor Series
| Series | Type | Common Applications | Modern Equivalent |
|---|---|---|---|
| FP Series | Aluminum Electrolytic (Can) | Vintage tube amplifiers, radios, hi-fi equipment | KEMET ALC10 / ALS series |
| TC Series | Tubular Electrolytic | Vintage radio restoration, coupling/bypass circuits | KEMET ESK / ESH series |
| WP/WC Series | Twist-Lock Electrolytic | Console stereos, vintage television sets | Custom cross-reference required |
| CGS Series | Computer-Grade Screw Terminal | Industrial power supplies, motor drives | KEMET ALS30/ALS31 series |
| 150M Series | Metallized Polyester Film | Guitar tone circuits, audio coupling | KEMET R82 / R60 series |
Mallory Capacitor Cross-Reference Guide
Mallory used alphanumeric part numbers that encode the capacitor series, capacitance value, voltage rating, and physical configuration. For example, a part like CGS103T450V4C indicates a computer-grade screw-terminal electrolytic (CGS), 10,000 µF (103), 450V working voltage, in a specific can size.
Our engineering team can decode any Mallory part number and match it to the closest available replacement based on capacitance, voltage, ESR, ripple current, dimensions, and mounting style. Submit a cross-reference request or request a quote with your Mallory part numbers.
Who Still Needs Mallory Capacitors?
- Vintage audio enthusiasts — Mallory FP-type can capacitors are standard in vintage tube amplifier and receiver restorations. Collectors often prefer original Mallory parts to maintain authenticity.
- Antique radio restorers — Original Mallory tubular electrolytics and wax capacitors are commonly replaced during radio restoration, either with NOS stock or modern equivalents re-stuffed into original casings.
- Industrial maintenance teams — Legacy industrial equipment using Mallory computer-grade capacitors in DC bus and filtering applications requires form-fit-function replacements during scheduled maintenance.
- Guitar amp builders — Mallory 150 series film capacitors are prized in the guitar community for their warm tonal qualities in amplifier tone stacks and coupling stages.
- Defense & legacy systems — MIL-qualified Mallory capacitors specified in technical manuals for legacy military and aerospace systems require exact or approved-equivalent replacements.
Why Choose Specap for Mallory Capacitors?
Specap has been sourcing legacy and obsolete capacitors for over 40 years. Our advantages for Mallory sourcing include:
- Existing inventory of NOS Mallory electrolytic and film capacitors
- Global network of verified surplus and legacy component suppliers
- Expert cross-reference matching to KEMET, Vishay, Nichicon, and other current manufacturers
- 100% electrical testing and authenticity verification on every shipment
- Same-day shipping on in-stock items
Frequently Asked Questions
Are Mallory capacitors still manufactured?
No. P.R. Mallory was acquired by Emerson Electric, and the capacitor division eventually became part of KEMET (now Yageo). Original Mallory-branded capacitors are no longer produced, but Specap stocks original parts and sources KEMET equivalents.
What happened to P.R. Mallory capacitors?
P.R. Mallory & Co. was acquired by Emerson Electric in the 1980s. The capacitor product lines were eventually absorbed into KEMET Corporation, which was later acquired by Yageo in 2020.
Where can I find Mallory capacitor replacements?
Specap provides cross-reference matching from Mallory part numbers to current KEMET/Yageo equivalents. We also maintain original Mallory stock for vintage equipment restoration projects.
Can you supply Mallory capacitors for vintage equipment restoration?
Yes. We specialize in sourcing original Mallory electrolytics for vintage audio, radio, and industrial equipment restoration, as well as providing modern equivalents when original parts are unavailable.
Related Sourcing Paths
Use these pages to find replacements, request quotes, and source legacy capacitors.