TIP127

STGP19NC60HD is a STMicroelectronics very fast IGBT in TO-220 — for hard-switching power stages: motor drives, UPS and induction heating. 600 V collector-emitter, 19 A continuous at 100°C (40 A at 25°C), very soft ultra-fast recovery antiparallel diode, PowerMESH technology for the switching/on-state trade-off. Heat evidence: IGBT sourcing is active as Nexperia supply disruption pushes buyers toward ST and Infineon alternatives — ST online store and DigiKey carry stock with 20-week factory lead times reported. Selection advice: the P suffix is TO-220 through-hole — the same die ships as STGB19NC60HDT4 (D²PAK) and STGW19NC60HD (TO-247); match the package to your heatsink layout, the three are not footprint-compatible. Parameters verified against STMicroelectronics datasheet DS4967. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

STP16NF06 is an ST N-channel power MOSFET — 60 V, 16 A, RDS(on) 0.08 Ω, TO-220, STripFET II technology. The 60 V / TO-220 combination is the selection point: a workhorse switch for 24–48 V motor drives, DC-DC and load switching — through-hole for easy heatsinking. Selection advice: ST lists the STP16NF06 as Active. At 16 A the 0.08 Ω on-resistance dissipates over 20 W — a heatsink is mandatory, and verify the thermal design against the RthJC. For lower loss in the same footprint consider a newer-generation 60 V MOSFET; for SMD assembly the STD16NF06 (DPAK) is the surface-mount sibling. Evidence: ST data confirms Active, 60 V, 16 A, 0.08 Ω, TO-220, STripFET II. Match the full STP16NF06 code. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

STP36NF06L is an STMicroelectronics 60 V N-channel STripFET II power MOSFET in TO-220 — for 12/24 V rails, motor control and power switching: 100% avalanche tested. 30 A continuous drain current, 32 mΩ typical Rds(on), -55°C to +175°C junction range, Ecopack2 RoHS compliant. Heat evidence: automotive MOSFETs are on allocation watch as vehicle makers dual-source away from disrupted suppliers — AEC-Q101 parts with stable supply are prioritized. Selection advice: the L suffix denotes logic-level-friendly gate threshold (2.5 V max) — vs the IRF540N it offers tighter Rds(on) for 12/24 V systems; confirm your gate drive can deliver the required current for fast switching. Parameters verified against STMicroelectronics documentation. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

TIP121 is an ST NPN power Darlington transistor in TO-220, tube — for driving motors, relays and solenoids directly from MCU outputs. The Darlington pair is the selection point: minimum DC current gain of 1000, so a few milliamps of base drive switches 5 A loads — no separate driver stage needed. Selection advice: ST lists the TIP121 as Active (in volume production). Its complement is the TIP126 (PNP) — for push-pull stages specify the pair together. Note the Darlington VCE(sat) of ~2 V at full load: at 5 A it dissipates ~10 W, so a heatsink is mandatory, and it is not a low-dropout switch — for efficient switching consider a MOSFET instead. Evidence: ST data confirms Active status, NPN Darlington, TO-220. Match the full TIP121 code — the TIP122 (100 V) and TIP120 (60 V) are different voltage grades. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

TIP122 is an STMicroelectronics NPN silicon power Darlington transistor — 5 A collector current, 100 V collector-emitter voltage, minimum DC current gain of 1000, in TO-220, tube packing, junction temperature to 150 °C. The Darlington gain of 1000 is the selection point: a microcontroller pin can switch multi-ampere loads (DC motors, solenoids, relays, lamps) through a small base resistor, where a single BJT would need far more base drive. Selection advice: Darlington saturation voltage reaches up to 4 V at 5 A — budget that voltage drop and the resulting heat, and fit a heatsink for continuous high-current loads. The PNP complement is the TIP127 for push-pull or H-bridge designs; for lower saturation choose a MOSFET instead. ST lists TIP122 as Active. Evidence: ST TIP122 datasheet and distributor listings confirm 5 A, 100 V, hFE 1000, TO-220 and tube packing. Match the full TIP122 code. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

ST lists TIP31C as ACTIVE (in volume production) — an NPN silicon power bipolar transistor, TO-220 plastic package, for audio, power linear and switching applications. The C voltage grade is the selection point: the TIP31 family spans A/B/C grades with different VCEO ratings in the same TO-220 package, so a lower-grade sibling looks identical but will fail at higher rail voltages. Selection advice: the complementary PNP is the TIP32C — for push-pull output stages, source both from the same manufacturer to keep the pair matched. Verify your collector voltage and current against the C-grade ratings with thermal margin, and plan heatsinking for the TO-220 package. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

ST lists TIP32C as ACTIVE (in volume production) — a silicon epitaxial-base PNP power transistor, TO-220 package, whose complementary NPN is the TIP31C. The C voltage grade is the selection point: the TIP32 family spans grades with different voltage ratings in the same TO-220 package, so match the full TIP32C code — a lower-grade sibling is visually identical. Selection advice: for push-pull output stages, pair with the TIP31C from the same manufacturer to keep the complementary pair matched. Verify collector voltage and current against the C-grade ratings with thermal margin, and plan heatsinking. Parameters verified against the ST official product page. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

TIP41C is STMicroelectronics’ 100 V NPN power transistor in TO-220 — 6 A continuous collector current, 65 W dissipation with a heatsink — for medium-power switching and linear stages: audio output stages, motor drivers, relay and high-power LED drivers, and series regulators. The ‘C’ suffix is the voltage grade — TIP41 (40 V), TIP41A (60 V), TIP41B (80 V), TIP41C (100 V) — same package and current rating across grades, so never substitute a lower grade into a 100 V rail design. Selection advice: the 65 W rating assumes an ideal heatsink; a bare TO-220 in still air handles roughly 2 W, so size the heatsink for your actual dissipation or the part will thermally run away. The complementary PNP is TIP42C (same 100 V / 6 A / TO-220) for push-pull and H-bridge stages — both are in this catalog. hFE of 15–75 is low, so budget real base current (several hundred milliamps at full load) or drive it from a Darlington stage. Not automotive-qualified; for automotive rails choose an AEC-Q101 power transistor instead. Active. Parameters trace to the manufacturer datasheet; state quantity, packing and date-code requirements in your RFQ — we reconfirm the offered lot before quotation and reply within 24 hours.

TIP42C is STMicroelectronics’ 100 V PNP power transistor in TO-220 — 6 A continuous, 65 W with a heatsink — the exact PNP complement to the TIP41C, for push-pull audio output stages, H-bridge high sides, and PNP series regulators. The ‘C’ suffix is the 100 V grade (TIP42 40 V / A 60 V / B 80 V / C 100 V): same current and package across grades, so match the grade to your rail voltage. Selection advice: pair with TIP41C (same 100 V / 6 A / TO-220, in this catalog) for complementary designs — but keep both halves in the same manufacturer family, since hFE spreads (15–75) differ between vendors and unmatched pairs distort. The 65 W rating needs a real heatsink; a bare TO-220 in still air is good for roughly 2 W. VCE(sat) reaches 1.5 V at 6 A, so budget the conduction loss in efficiency-sensitive designs. Active, stocked in tube packing. Parameters trace to the manufacturer datasheet; state quantity, packing and date-code requirements in your RFQ — we reconfirm the offered lot before quotation and reply within 24 hours.

2N3055 is an ST NPN power transistor in TO-3 (TO-204AA) metal-can — VCEO 60 V, continuous collector current 15 A, the classic linear-regulator pass transistor. The TO-3 metal can is the selection point: 115 W dissipation with proper heatsinking — the device that built generations of bench power supplies, suited for audio, power-linear and switching applications. Selection advice: lifecycle warning — ST lists the 2N3055 as obsolete (out of production); for repairs and legacy builds we source remaining distributor stock, and for new designs use a current-production power transistor or MOSFET. Its PNP complement is the MJ2955 — for push-pull or complementary output stages the two are specified as a pair. Evidence: ST data confirms NPN, TO-3, obsolete status. Match the full 2N3055 code on your BOM. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.