Key Specs

SpecValueConditionSource
input_voltage_max1300 VmaxDatasheet
input_voltage_repetitive_max1200 VmaxDatasheet
reverse_current_min10 µAminDatasheet
reverse_current_typ2 mAtypDatasheet
forward_voltage_drop_min1.30 VminDatasheet
forward_voltage_drop_typ1.59 VtypDatasheet
forward_voltage_drop_max1.27 VmaxDatasheet
forward_voltage_drop_typ_21.65 VtypDatasheet
average_forward_current_min30 AminDatasheet
rms_forward_current47 ADatasheet
threshold_voltage_max0.86 VmaxDatasheet
slope_resistance13.2 mΩDatasheet
thermal_resistance_junction_to_case0.5 K/WDatasheet
thermal_resistance_case_to_heatsink0.25 K/WDatasheet
total_power_dissipation_max250 WmaxDatasheet
forward_surge_current_typ300 AtypDatasheet
forward_surge_current_max_50hz255 AmaxDatasheet
forward_surge_current_max_60hz275 AmaxDatasheet
forward_surge_current_max_50hz_2325 AmaxDatasheet
i²t_for_fusing_typ_50hz450 A²stypDatasheet
i²t_for_fusing_typ_60hz440 A²stypDatasheet
i²t_for_fusing_max_50hz325 A²smaxDatasheet
i²t_for_fusing_max_60hz315 A²smaxDatasheet
junction_capacitance13 pFDatasheet
max_gate_power_dissipation_typ10 WtypDatasheet
max_gate_power_dissipation_max5 WmaxDatasheet
average_gate_power_dissipation0.5 WDatasheet
critical_rate_of_rise_of_current_typ150 A/µstypDatasheet
critical_rate_of_rise_of_current_max500 A/µsmaxDatasheet
critical_rate_of_rise_of_voltage_typ500 V/µstypDatasheet
gate_trigger_voltage_min1.6 VminDatasheet
gate_trigger_voltage_typ1.3 VtypDatasheet
gate_trigger_current_min50 mAminDatasheet
gate_trigger_current_typ30 mAtypDatasheet
non_trigger_voltage_max0.2 VmaxDatasheet
latching_current_typ115 mAtypDatasheet
holding_current_typ105 mAtypDatasheet
gate_controlled_delay_time_min2 µsminDatasheet
turn_off_time_max150 µsmaxDatasheet
rms_current_min35 AminDatasheet
virtual_junction_temperature_min-40 °CminDatasheet
virtual_junction_temperature_max150 °CmaxDatasheet
operation_temperature_min-40 °CminDatasheet
operation_temperature_max125 °CmaxDatasheet
storage_temperature_min-40 °CminDatasheet
storage_temperature_max150 °CmaxDatasheet
weight_typ1.5 gtypDatasheet
mounting_force_min20 NminDatasheet
mounting_force_max60 NmaxDatasheet
terminal_to_terminal_min4.2 mmminDatasheet
terminal_to_terminal_max4.7 mmmaxDatasheet
input_voltage_min1.78 VminDatasheet
input_voltage_typ10.92 VtypDatasheet
switching_frequency_min50HzminDatasheet
switching_frequency_typ60HztypDatasheet
switching_frequency_max80%VmaxDatasheet
output_current_min1 AminDatasheet
output_current_typ3 AtypDatasheet
output_current_max160 A2smaxDatasheet
thermal_resistance_min4 K/WminDatasheet
thermal_resistance_typ10 K/WtypDatasheet
thermal_resistance_max100 K/WmaxDatasheet
junction_temperature_min-25°CminDatasheet
junction_temperature_typ25°CtypDatasheet
junction_temperature_max150°CmaxDatasheet

When To Use

  1. 1200V DC bus → 30A peak load: The 1200 V repetitive voltage rating and 30 A minimum average forward current make CLB30I1200PZ-TUB a good fit for high-voltage DC bus applications with moderate current demands. Using a lower-voltage or lower-current part risks avalanche breakdown or thermal runaway under load surges.

  2. AC line rectification @ 60Hz, 47A RMS: The device supports 47 A RMS forward current and typical surge currents up to 300 A, which aligns well with 60 Hz rectification in industrial power supplies. Choosing a diode with lower surge current capability would cause premature device failure from junction overstress during startup or fault conditions.

  3. High-speed switching at 500 V/µs dV/dt rates: With a typical critical rate of rise of voltage at 500 V/µs and a maximum of 500 A/µs di/dt, this part is appropriate for fast-switching power converters where transient voltage and current spikes occur. Using a diode with slower switching can cause shoot-through or latch-up due to delayed recovery.

When Not To Use

  1. Output currents above 47A RMS: The rms forward current rating of 47 A limits continuous conduction. For loads exceeding this, especially in high-efficiency designs, a high-current synchronous buck with external FETs is required to handle the current and reduce conduction losses.

  2. Switching frequencies above 80% of line frequency (e.g., > 80Hz): The maximum switching frequency is specified at 80% V (interpreted as roughly 80 Hz), so this part is unsuitable for high-frequency DC/DC converters. Use a high-frequency buck controller instead.

  3. Low-voltage dropout applications (< 1.78 V input): The minimum input voltage rating of 1.78 V and forward voltage drop above 1.3 V make this diode inappropriate for applications requiring low dropout and low noise. An LDO regulator is a better choice for low-voltage, low-noise regulation.

Application Notes

  • The switching node (SW) experiences transient voltages up to 1300 V; minimize loop inductance and keep SW trace short to reduce voltage overshoot and ringing.

  • Pins controlling the gate trigger (gate pin) must be routed with low impedance and shielded from switching noise to maintain the gate trigger voltage minimum of 1.6 V and current minimum of 50 mA without false triggering.

  • Ensure thermal interface materials and mounting force between 20 N and 60 N are applied uniformly to maintain the specified 0.5 K/W junction-to-case thermal resistance.

  • Guard routing around the gate and cathode terminals is recommended to prevent capacitive coupling that could induce unintended gate currents, especially given the junction capacitance of 13 pF.

  • Avoid ground loops between the cathode and gate return paths to prevent latch-up caused by spurious gate currents during fast dv/dt events.

Gotchas

  1. [Mistake]: Applying mounting force above 60 N to improve thermal contact.
    What happens: Excessive mechanical stress damages the die or internal bonds, causing immediate device failure or degraded lifetime due to micro-cracks.
    Fix: Use a calibrated torque or force gauge to maintain mounting force within 20–60 N.

  2. [Mistake]: Ignoring the maximum turn-off time of 150 µs when designing switching frequency above 80 Hz.
    What happens: The device does not fully recover before the next cycle, leading to excessive reverse current and potential thermal runaway.
    Fix: Limit switching frequency to ≤ 80 Hz or select a device with faster turn-off specs.

  3. [Mistake]: Driving the gate trigger voltage below 1.6 V or gate trigger current below 50 mA.
    What happens: The device fails to latch, causing shoot-through and increased EMI due to partial conduction states.
    Fix: Design gate drive circuits to exceed both the minimum gate trigger voltage and current specs.

  4. [Mistake]: Routing gate control signals near the high dv/dt switching node without proper shielding.
    What happens: Capacitive coupling induces false triggering or latch-up, causing device failure from uncontrolled conduction.
    Fix: Implement dedicated guard traces and keep gate control wiring physically separated from the SW node.