Bourns, Inc. distributor & excess inventory

About Bourns, Inc.

Bourns, Inc. was founded in 1947 in Riverside, California by Marlan and Rosemary Bourns and remains a privately held, family-controlled corporation headquartered on Columbia Avenue in Riverside — the original site — with roughly 5,000 employees globally across manufacturing sites in the U.S., Mexico, Costa Rica, Ireland, Germany, Czech Republic, China, Taiwan, and Malaysia. Bourns is credited as the inventor of the trimming potentiometer — the Trimpot® — a design that became the industry-standard adjustable resistor in nearly every calibrated electronic system. Today Bourns designs and manufactures four core product platforms: circuit protection (TBU high-speed protectors, 2027 / 2036 / 2038 GDT gas-discharge tubes, CDSOD / CDNBS TVS-diode arrays, MF-R / MF-NSMF / MF-USMD PPTC multifuse resettable fuses, MOV metal-oxide varistors), passives (chip resistors, thick-film resistor networks and arrays, current-sense resistors, trimpots, rotary potentiometers, magnetics — chip inductors, shielded SMD power inductors, common-mode chokes, wire-wound through-hole inductors, transformers), and sensors (encoders, environmental, position). The Bourns portfolio also spans automotive AEC-Q200 chip resistors, inductors, current-sense, and circuit-protection lines qualified into infotainment, ADAS, xEV DC/DC, on-board charger, and body-electronics ECUs.

Bourns has grown by focused acquisition of magnetics-heavy specialists: JW Miller Magnetics in 2004 (adding the JW Miller PM-series shielded and unshielded wire-wound inductors, radial-leaded chokes, and the RF coil line), Yosun Electronic in 2007 (adding the shielded SMD power inductor platform that became the current SRP-series — SRP1265, SRP7028, SRP4020, SRP4030 — ubiquitous in DC-DC converter designs), and Kaschke Components in 2018 (adding common-mode chokes, filter chokes, current transformers, toroids, and PLC power-line-communication magnetics). A smaller ESD-suppressor line integrated via Circuit Components, Inc. rounds out the surge-protection platform. Hybrid Electronics has sourced Bourns product since 1995 — before the JW Miller and Yosun rollups, and before Bourns consolidated the SRP shielded-inductor line as the industry-preferred DC-DC magnetics. Engineers still hunt for parts by the pre-acquisition names: JW Miller 5250 and PM radial chokes, Yosun SRR-series pre-Bourns power inductors, Kaschke small-toroid chokes, and legacy Bourns 3006 / 3005 / 3059 and 3852 single-turn trimpots. We source obsolete, hard-to-find, and allocated Bourns parts from OEM excess, CEM surplus, and traceable secondary channels when authorized distributors show zero stock or 30+ week lead times.

Notable Bourns part numbers we track

Hybrid Electronics quotes and sources the following Bourns, Inc. parts across the Trimpot®, rotary potentiometer, chip inductor, shielded SMD power inductor, wire-wound choke, chip resistor, current-sense resistor, resistor-network, TBU high-speed protector, GDT gas-discharge tube, TVS-diode-array, PPTC multifuse, and MOV varistor families. Bourns uses family-prefix nomenclature: trimpots 3266 / 3296 / 3362 / 3386 plus adjust-code (P / W / X / Y / Z) plus resistance decade (e.g. -103 = 10 kΩ), inductors SRP<case><variant>-<uH><tol>, chip resistors CR<size>-FX-<value>ELF, current-sense CSS<size>-FT-R<mΩ>, TBU TBU-CA<current>-<voltage>, GDT <family>-<voltage>-BLF, TVS CDSOD323-T<V>LC, PPTC MF-<package><current>-<series>. Contact us for the exact adjust-code, tolerance, and packaging variant you need.

Bourns quote & sourcing FAQ

What Bourns products does Hybrid Electronics quote most often?

Bourns 3266 / 3296 / 3299 / 3362 / 3386 cermet trimpots (single-turn and multi-turn), SRP1265 / SRP7028 / SRP4020 / SRP4030 shielded SMD power inductors, CR-series 0402 / 0603 / 0805 / 1206 chip resistors, CSS / CSM / CSF metal-element current-sense, CM and CI chip inductors, TBU-CA high-speed protectors, 2036 / 2038 GDT gas-discharge tubes, CDSOD TVS-diode arrays, and MF-R / MF-NSMF PPTC resettable fuses are our highest-volume Bourns quote categories. Legacy 3006 / 3005 / 3059 pre-2000 trimpots, JW Miller 5250 chokes, and older Yosun SRR power inductors are steady low-volume sourcing lines for defense, industrial, and legacy-telecom customers.

Is Bourns still family-controlled, and does it still ship from Riverside, California?

Yes. Bourns, Inc. was founded in 1947 by Marlan and Rosemary Bourns and remains a privately held, family-controlled corporation headquartered in Riverside, California with roughly 5,000 employees globally across the Americas, EMEA, and Asia-Pacific manufacturing sites. Bourns is credited as the inventor of the trimming potentiometer (the "Trimpot") and continues to run the Trimpot, chip resistor, current sense, magnetics, sensor, and circuit protection product lines under the original Bourns brand — including families rolled up from the JW Miller Magnetics (2004), Yosun Electronic (2007), and Kaschke Components (2018) acquisitions.

Can Hybrid Electronics source the discontinued JW Miller and older Bourns trimpot families?

Yes. We actively source legacy JW Miller PM-series and 5250-series wire-wound chokes from the pre-2004 Bourns / JW Miller Magnetics acquisition, pre-2010 CI-series chip inductor production revisions, older Yosun SRR power inductors from before the Yosun / Bourns integration, discontinued 3006 / 3005 / 3059 and 3852 single-turn trimpots that predate the current 3266 / 3296 / 3362 SMD Trimpot line, and pre-Kaschke Kaschke Components small-toroid chokes for mil-aero, industrial-drive, and legacy-telecom BOMs. Send us the exact date-code range, package variant, and traceability requirement and we return an availability window.

Do you carry Bourns automotive AEC-Q chip resistors, inductors, and circuit protection?

Yes. We source Bourns AEC-Q200 automotive families — CR-Auto chip resistors, CSS-Auto current-sense, CI-Auto chip inductors, SRP-Auto shielded power inductors, MF-USMD automotive PPTC multifuse, TBU-Auto high-speed protectors, and CDSOD / CDNBS TVS arrays qualified into infotainment, ADAS, xEV DC/DC, on-board charger, and body-electronics ECU designs to 125 °C and 150 °C ambient. Both current-production factory-sealed stock and OEM-excess lots are available.

Which Bourns circuit-protection families does Hybrid Electronics stock?

TBU-CA / TBU-PL high-speed protectors (patented Bourns transient blocking unit), 2027 / 2036 / 2038 gas-discharge tubes (GDT) for AC-line surge and telecom secondary protection, CDSOD323 / CDNBS08 uni-directional and bi-directional TVS-diode arrays, SM6T through-hole TVS, MF-R radial-leaded PPTC resettable multifuse, MF-NSMF SMD PPTC, MF-USMD automotive PPTC, and MOV-14D / MOV-20D / MOV-25S / MOV-32S metal-oxide varistors — the full stack of primary and secondary AC-line and signal-line protection Bourns publishes.

How fast is your Bourns 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 Bourns, Inc. distributor?

No — we're an independent distributor and excess-inventory buyer sourcing from OEM excess, CEM surplus, and traceable secondary channels since 1995.