RHRP15120 hyperfast recovery diode — 1200V, 15A, soft recovery, TO-247
The RHRP15120 is a 1200V, 15A hyperfast recovery diode with soft recovery characteristics, manufactured using silicon nitride passivated ion-implanted epitaxial planar construction. It offers approximately half the reverse recovery time of standard ultrafast diodes, making it ideal for high-frequency power switching applications where minimising switching losses and electrical noise is critical.
The soft recovery characteristic reduces voltage overshoot and ringing during turn-off, lowering EMI and stress on switching transistors. These properties make the RHRP15120 a preferred choice for freewheeling and clamping diode positions in inverters, UPS systems, and SMPS designs.
Key Specifications:
- Part number: RHRP15120
- Type: Hyperfast soft-recovery rectifier diode
- Repetitive peak reverse voltage (VRRM): 1200V
- Average forward current (IF(AV)): 15A
- Peak forward surge current (IFSM): 150A
- Forward voltage drop (VF): ~1.7V typ. @ 15A
- Reverse recovery time (trr): hyperfast (approx. half of ultrafast diodes)
- Recovery type: soft (low di/dt, minimal ringing)
- Construction: silicon nitride passivated, ion-implanted epitaxial planar
- Package: TO-247AC (through-hole, 2-pin + tab)
- Operating temperature: −55°C to +175°C
Key Features:
- Hyperfast recovery — ~50% lower trr vs. standard ultrafast diodes, reducing switching losses
- Soft recovery — minimises voltage ringing and EMI during reverse recovery
- Low stored charge — reduces power dissipation in the switching transistor
- 1200V blocking voltage — suitable for 400V–800V DC bus applications
- TO-247 package — easy heatsink mounting for high-power operation
- Silicon nitride passivation — improved reliability and long-term stability
Applications:
- Freewheeling diode in IGBT and MOSFET inverter bridges
- Clamping diode in switching power supplies (SMPS)
- Boost and PFC (Power Factor Correction) converter output rectifier
- UPS and battery charger rectification
- Motor drive freewheeling
- Solar inverter and grid-tie converter stages
Note: The TO-247 tab is the cathode. A heatsink is required for operation above low currents. Refer to the RHRP15120 datasheet for thermal derating and mounting torque specifications.