K1100E70AP

Overview

The Littelfuse K1100E70AP is a silicon bilateral voltage-triggered switch (SIDAC) from the Kxxxzy series, housed in a TO-92 package. It features a breakover voltage range of 104V to 118V and a repetitive peak off-state voltage of 90V. The device supports an on-state RMS current of 1A at 50/60Hz with a junction temperature below 125°C. Key electrical parameters include a dynamic holding current between 10mA and 150mA, a peak non-repetitive surge current of 20A for a single cycle at 60Hz, and a critical rate of rise of on-state current of 150 A/μs. Thermal resistance from junction to ambient is 95°C/W.

Feature Summary

• Features glass-passivated junctions for ruggedness and dependability in harsh environments.
• Operates as a bidirectional trigger switch, switching to low on-state voltage upon exceeding breakover voltage.
• Conduction persists until current is interrupted or drops below the minimum holding current threshold.

Applications

• High voltage power supplies
• Natural gas igniters
• High-pressure Sodium lamps
• Xenon flash ignition

Procurement Notes

Verify the specific ordering suffix AP indicates Ammo Pack packaging when sourcing components. Confirm RoHS compliance status through official Littelfuse documentation prior to integration. Ensure the selected variant matches the required TO-92 lead form dimensions for proper PCB mounting. Cross-reference the part number against the latest datasheet revision to validate all electrical specifications.

Selection Notes

Select this component based on the required breakover voltage range of 104V to 118V for the specific circuit application. Evaluate the thermal management requirements, noting the 95°C/W junction-to-ambient thermal resistance for TO-92 packages. Ensure the circuit design accommodates the 1A RMS current rating and the 20A peak non-repetitive surge capability. Consider the operating temperature range of -40°C to 125°C for environmental suitability.

Part Context

The K1100E70AP belongs to the Littelfuse Kxxxzy SIDAC family, which offers various breakover voltages and package options including DO-15, DO-214, and TO-92. This specific model utilizes the E package designation for TO-92 housing with Type 70 lead forms. The '0' in the series denotes standard circuit function, distinguishing it from two-series-die variants.

Replacement Considerations

Compatible substitutes within the same family include K1100G (DO-15), K1100S (DO-214), and K1100E70 (Bulk TO-92). Verify that alternative packages meet the mechanical and thermal constraints of the existing design. Ensure the replacement maintains the identical 104V-118V breakover voltage range and 90V blocking voltage specifications.

FAQ

What is the maximum repetitive peak off-state voltage for the K1100E70AP?

The maximum repetitive peak off-state voltage (VDRM) is 90V.

How does the K1100E70AP handle overcurrent conditions?

It can withstand a peak non-repetitive surge current (ITSM) of 20A for a single cycle at 60Hz, though blocking capability may be lost immediately following the surge interval.

What is the critical rate of rise of on-state current (di/dt)?

The critical rate of rise of on-state current is specified as 150 A/μs.