ULTIMA Board-Mounted SPD Modules

Board-mounted SPD modules for OEM integration

The ULTIMA series is a family of surge protective modules that mount directly on the equipment’s printed circuit board — no DIN rail, no separate housing. Each module combines our own metal oxide varistor chips with a built-in thermal disconnector and an alarm contact for remote status signaling, in a compact flame-retardant housing that solders or plugs onto the board. The modules are made by Guiyang High-Tech Yige Electronic Co., Ltd. and supplied to equipment manufacturers for integration into their own products; in North America they are supported by Flyboat Electronic LLC, the factory’s sales and engineering center in Bellevue, WA.

Design: the disconnector works from the center of the chip

The ULTIMA disconnector is built around the puncture-point control of our MOV chips. Because each chip’s melt-through point is held in the center of the disc, a sliding thermal disconnector seated at that center point responds quickly and consistently when the varistor degrades — separating the chip from the circuit before it can overheat. The design is protected by invention patent ZL201410061277.5. A status window on the module shows the operating state, and a built-in microswitch provides a floating alarm contact (C / NO / NC) for remote signaling.

How to read an ULTIMA type code

Column definitions for the ratings tables below: Type = full model code; U1mA = varistor voltage range at 1 mA; UAC / UDC = maximum continuous operating voltage (a.c. / d.c.); In = nominal discharge current (8/20 µs); Imax = maximum discharge current (8/20 µs); Up = voltage protection level at In; U150 / U300 = limiting voltage at a 150 A / 300 A test current; Energy 2 ms = energy absorption rating, 2 ms wave.

ULTIMA B10 — In 10 kA class

Built on 22S chips with a built-in thermal disconnector. Forms /11 and /31 share the same ratings; form /21 is a slim single-phase structure with a built-in microswitch.

Form /11 — full ratings

Form /21 — structure and key ratings

Form /31 — full ratings

ULTIMA B20 — In 20 kA class

Built on 34S chips. Five structure forms share the same chip platform: /11 and /31 (identical ratings), /21 two-phase with independent disconnectors, /41 with dual independent thermal disconnectors, and /51 dimensioned to fit conventional plug-in SPD bases.

Form /11 — full ratings

Form /21 — structure and key ratings

Form /31 — full ratings

Form /41 — full ratings

Form /51 — full ratings

Form /51 matches the core dimensions of conventional plug-in SPD bases, so the modules can be designed into existing base footprints.

ULTIMA B40 — In 40 kA class

The highest discharge class in the family, offered in form /41 with dual independent thermal disconnectors.

Form /41 — full ratings

Note: the catalog prints the U1mA range of the 350 V models (B20K350/41 and B40K350/41) as “510 ~ 510”; the value is reproduced as printed.

Materials

Housing: PA66 (V-0). Inner box and plastic parts: PBT (V-0). Terminals: T2 copper. The MOV chips are pressed, sintered and tested in our own plant; a microswitch provides the alarm contact.

OEM supply — and one boundary

ULTIMA modules are board-level OEM components. They are not UL Listed finished surge protective devices, and end-product certification of the finished equipment is arranged by the customer. We supply the modules with full ratings data, samples for design-in, and batch traceability, with a Certificate of Conformance for every shipment.

For samples, dimension drawings and design-in support: North America — Thomas Dong, Flyboat Electronic LLC; China — Colin Fei. See the Contact page.