Stackpole Electronics distributor & excess inventory

About Stackpole Electronics, Inc. (SEI)

Stackpole Electronics, Inc. (SEI), headquartered in Raleigh, North Carolina, traces its heritage to the Stackpole Carbon Company founded in 1928 in St. Marys, Pennsylvania — one of the original American manufacturers of carbon-composition resistors. The modern resistor business was spun off as Stackpole Electronics Inc. in the 1980s and, in September 2024, was acquired by Standex International (NYSE: SXI) for approximately $200 million, combining SEI with Standex Electronics (transformers and inductors) to form a full-service passives group. As a privately held ~300-person specialist, SEI's catalog spans thick-film chip resistors (RMCF), thin-film precision resistors (RNCF), current-sense chip and Kelvin-4-terminal metal-strip shunts (CSR, CSNL, CSSH, CSS), wirewound axial and SMD (SP, RSF, SMW), high-power chassis-mount film (HPS, HPC), MELF (RMMLF), high-voltage chip and axial (HVCA, HVA), chip resistor arrays (RACF, RACS), AEC-Q200 automotive series (RMCA, RNCA, RTAN), trimmers (SDT, SCB), and a recent thin-film precision fuse line (FCB, FCX) launched in 2024.

Hybrid Electronics has been a channel for legacy and excess Stackpole product since we began sourcing in 1995. We support customers who need pre-Standex 2024 lot codes on qualified BOMs, obsolete Stackpole Carbon axial resistors (SC series) for vintage industrial and defense refurbishment, discontinued RSF fusible wirewound parts, early CSR current-sense pre-Kelvin-4-terminal revs, and hard-to-find HVCA, HVA1010, and RMMLF MELF variants when authorized channels show zero stock or long lead times. SEI's KOA-Speer distribution alliance and Vishay/Sfernice-adjacent product positioning mean many buyers cross-shop Stackpole against second-source resistor families — we help pin the exact PN, tolerance, and TCR combination.

Notable Stackpole part numbers we track

Hybrid Electronics quotes and sources the following Stackpole (SEI) parts across resistor, current-sense, high-voltage, wirewound, and fuse segments. Stackpole uses family-prefix nomenclature — RMCF, RNCF, CSR, CSS, HVCA, HPS, RACF, SP, RTAN, and FCB — followed by size, tolerance, TCR, and resistance codes. Contact us for the exact PN, tolerance grade, TCR letter, and packaging option you need.

Additional Stackpole thick-film chip sizes (0201, 01005), thin-film precision resistors with E-suffix AEC-Q200 lot codes, CSS Kelvin shunts down to 0.2 mΩ, HPS chassis-mount up to 1000 W, and FCB/FCX precision-fuse ratings quoted on request. All Stackpole PNs are quoted with tolerance grade, TCR letter, packaging (tape & reel, bulk), and date-code range confirmed on the RFQ.

Stackpole quote & sourcing FAQ

What Stackpole products does Hybrid Electronics quote most often?

RMCF general-purpose thick-film chip resistors (0402/0603/0805/1206), RNCF thin-film precision chips at 0.1%/25 ppm, CSR and CSSH current-sense chips, CSS Kelvin-4-terminal metal-strip shunts, and SP-series wirewound axials are our highest-volume Stackpole quote categories. Legacy Stackpole Carbon axial composition resistors, pre-Standex 2024 lot codes, and obsolete HVA high-voltage variants are steady low-volume sourcing lines for defense, medical, and industrial customers.

Can Hybrid Electronics source current-production Stackpole AEC-Q200 automotive parts (RMCA, RNCA, RTAN)?

Yes — on both stocking and sourced-quote bases. Stackpole's automotive families (RMCA thick-film, RNCA thin-film, RTAN anti-sulfur and anti-surge) are qualified into powertrain, ADAS, and EV battery-management BOMs where PPAP-grade date-code control matters. Include your target quantity, tolerance/TCR combination, and required lot-code window and we will return an availability window and quoted price.

Are your Stackpole parts factory sealed and traceable?

Yes when available — most of our OEM-excess and CEM-surplus Stackpole stock is factory sealed with original tape-and-reel or bulk packaging and full traceability documentation (COC, COO, date-code range, lot-code markings). For downgraded stock we disclose condition (opened reel, partial reel, tested-pull) on the quote. Customers requiring MSL data, RoHS exemption documentation, AEC-Q200 lot traceability, or DPAS-rated delivery should note that on the RFQ.

Do you carry pre-Standex 2024 SEI-branded lot codes?

Yes — for many families we hold or can source pre-acquisition SEI-marked date codes, which is important for programs whose BOMs are frozen against specific Stackpole Electronics Inc. lot markings. Standex International completed its acquisition of Stackpole in September 2024, and both eras are supported through our inventory and sourcing network. Note the exact lot marking or date-code window you require on the RFQ.

How fast is your Stackpole quote turnaround?

Same day for parts in stock — typically within 2 hours during business hours (9am–6pm ET). Sourced quotes on out-of-stock parts return within 24–48 hours with an availability window. Email sales@hybridelectronics.com or call (407) 542-3995 to open an RFQ.

Is Hybrid Electronics an authorized Stackpole Electronics distributor?

No — we're an independent distributor and excess-inventory buyer sourcing from OEM excess, CEM surplus, and traceable secondary channels since 1995. For factory-warranted current-production orders on Stackpole's automotive or high-reliability lines, work with an SEI-authorized franchised distributor. For obsolete Stackpole Carbon composition resistors, pre-Standex 2024 lot codes, discontinued RSF fusible wirewound, older RMMLF MELF variants, and other hard-to-find or allocated parts where authorized channels show no stock, Hybrid Electronics is a proven independent source.