Toshiba Components

Yes — Toshiba Electronic Devices & Storage Corporation (TDSC) is the Toshiba Group company that designs and sells Toshiba-branded semiconductors and storage products; it was reorganized as a distinct corporation in July 2017, building on a semiconductor business Toshiba has operated since 1967 (Toshiba invented several foundational Japanese IC processes and shipped the first Japanese MOS ICs). TB6612FNG and TLP281 are original Toshiba designs manufactured in Toshiba's quality system, and we source them through Toshiba authorized distribution with full lot traceability.

Yes — it is a favorite of robot-kit makers, so remarked and clone dies circulate widely. Fakes show elevated on-resistance (motors run weak and the chip overheats at currents genuine parts handle cool), broken standby logic, or dead brake/short-circuit modes. We bench every lot: 1.2 A continuous per channel with thermal imaging, peak-current pulse test toward 3.2 A, standby-current measurement (genuine is microamps), and PWM linearity check up to 100 kHz.

The L293D uses Darlington outputs that drop 1.4-2 V, wasting watts as heat and robbing motors of voltage; the TB6612FNG uses MOSFET H-bridges with ~0.1 Ω-class on-resistance, so a 6 V motor actually sees ~6 V and the driver stays cool. TB6612 also supports 100 kHz PWM (silent operation vs the L293D's audible whine), true standby at near-zero current, and dual 1.2 A channels in a small SSOP-24. The trade-off: lower maximum supply (15 V motor VM vs L293D's 36 V) and no through-hole DIP variant.

Toshiba authorized channel quotes 8-16 weeks for standard analog and opto parts; our Shenzhen warehouse holds TB6612FNG and TLP281 for 1-3 day shipment. On cross-references: the TLP281 is Toshiba's member of the industry-standard 4-pin photocoupler family — TLP281 (DIP-4) and TLP281-4/GB variants cross directly to PC817 (Sharp), LTV-817 (Lite-On) and EL817 (Everlight) by CTR grade. We can quote Toshiba genuine plus these pin-compatible second sources on one RFQ.