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$72.31
| Voltage | WPC | AH/kVA | Length | Width | Height | Weight |
|---|---|---|---|---|---|---|
| 800 V | N/A | 55 A | N/A | N/A | N/A | 170 g |
| Voltage | 800 V |
| WPC | N/A |
| Amp/H | 55 A |
| Length | N/A |
| Width | N/A |
| Height | N/A |
| Weight | 170 g |
The SanRex AK55GB80 is an 800 V, 55 A anti-parallel dual-thyristor power module designed for industrial AC power control and rectifier applications. Its inverse-parallel SCR configuration allows bidirectional AC switching, making it well suited for motor controls, heater controls, static switches, light dimmers, and other line-powered systems.
The module incorporates an electrically isolated mounting base, simplifying heatsink installation while maintaining electrical separation from the cooling surface. High surge-current capability and robust dV/dt and di/dt ratings support dependable operation in demanding industrial switching environments.
| Parameter | Value |
| Manufacturer | SanRex / Sansha Electric |
| Part Number | AK55GB80 |
| Device Type | Anti-parallel dual thyristor / SCR power module |
| Repetitive Peak Off-State Voltage (VDRM) | 800 V |
| Average On-State Current (IT(AV)) | 55 A — single-phase, half-wave, 180° conduction at TC = 89°C |
| RMS On-State Current (IT(RMS)) | 122 A at TC = 89°C |
| Surge On-State Current (ITSM) | 1000 A @ 50 Hz / 1100 A @ 60 Hz, 1/2-cycle, non-repetitive |
| I2t Rating | 5000 A²s |
| Critical di/dt | 150 A/µs |
| Critical dV/dt | 500 V/µs minimum at TJ = 125°C |
| Peak On-State Voltage (VTM) | 1.35 V max @ IT = 165 A, TJ = 125°C |
| Gate Trigger Current (IGT) | 100 mA max @ TJ = 25°C |
| Gate Trigger Voltage (VGT) | 3 V max @ TJ = 25°C |
| Non-Trigger Gate Voltage (VGD) | 0.25 V minimum @ TJ = 125°C |
| Peak Gate Power Dissipation | 10 W |
| Average Gate Power Dissipation | 3 W |
| Peak Forward Gate Current | 3 A |
| Peak Forward Gate Voltage | 10 V |
| Peak Reverse Gate Voltage | 5 V |
| Turn-On Time | 10 µs max |
| Holding Current | 50 mA typical |
| Latching Current | 100 mA typical |
| Thermal Resistance — Junction to Case | 0.50°C/W per half module; 0.25°C/W per complete module |
| Isolation Test Voltage | 2500 V RMS, AC for 1 minute |
| Operating Junction Temperature | −40°C to +125°C |
| Storage Temperature | −40°C to +125°C |
| Recommended Mounting Torque | M6: 2.5–3.9 N·m |
| Recommended Terminal Torque | M5: 1.5–2.5 N·m |
| Approx. Mass | 170 g |
| Configuration | Two SCRs connected inverse-parallel |
The AK55GB80 contains two thyristors connected in opposite directions, allowing controlled current flow during both halves of an AC waveform. This makes the module particularly useful for AC phase control, motor control, heater regulation, lighting control, and solid-state switching without requiring separate discrete SCR devices.
| Module | Applications | Replacement Notes |
| AK55GB80 | AC/DC motor drives, heater controls, light dimmers, static switches, industrial AC power controllers | Verify voltage rating, internal anti-parallel configuration, gate connections, terminal layout, mounting footprint, cooling requirements, and original equipment specifications before substitution. |
