SANREXPAK – PK70F-80 – Thyristor SCR Power Module – 800V 70A – Reclaimed Part

SANREXPAK — PK70F-80 Thyristor SCR Power Module 800 V • 70 A I_T(AV) • PK Configuration • Electrically Isolated Baseplate

What it is

The SanRex PK70F-80 is an industrial-grade 800 V, 70 A thyristor/SCR power module designed for controlled rectification and high-power switching applications. The PK70F family combines power semiconductor elements in a precision 25 mm-class package with an electrically isolated mounting base, simplifying heatsink installation and mechanical design.

With up to 1950 A non-repetitive surge-current capability, 150 A/µs di/dt capability and 500 V/µs dv/dt immunity, the PK70F-80 is well suited to industrial rectifiers, AC/DC motor drives, heater controls, lighting controls, static switches and legacy power-conversion equipment.

At-a-Glance

• Voltage Rating: 800 V V_DRM / V_RRM
• Average On-State Current: 70 A I_T(AV)
• RMS On-State Current: 110 A I_T(RMS)
• Surge Current: 1800 A @ 50 Hz / 1950 A @ 60 Hz
• I²t Rating: 16,200 A²s
• Dynamic Capability: 500 V/µs dv/dt • 150 A/µs di/dt
• Isolation: 2500 V_RMS terminals-to-baseplate for 1 minute
• Applications: Rectifiers; motor drives; heater controls; light dimmers; static switches

Features

• 800 V blocking capability — designed for industrial rectification and controlled power-switching circuits.
• High surge capability — I_TSM rated at 1800 A @ 50 Hz and 1950 A @ 60 Hz non-repetitive peak.
• High I²t capability — 16,200 A²s rating for one cycle of surge current.
• Rugged switching performance — 150 A/µs critical di/dt and 500 V/µs minimum critical dv/dt.
• Low on-state voltage — V_TM maximum 1.40 V at I_T = 220 A and T_j = 25°C.
• Fast gate response — turn-on time of 10 µs maximum under specified test conditions.
• Electrically isolated baseplate — provides 2500 V_RMS isolation while simplifying heatsink installation.

Technical Specifications

Applications / Replacement Considerations