onsemi FFPF15U20DPTU

Overview

FFPF15U20DPTU from ON Semiconductor is a 200 V, 15 A ultrafast recovery rectifier diode in TO-220F package with 35 ns reverse recovery time (trr), 1.85 V forward voltage (VF) at 15 A, and 150 °C maximum junction temperature - used in high-frequency switch-mode power supplies and PFC stages.

For engineers reviewing the FFPF15U20DPTU datasheet, pinout, applications, or equivalent options, key selection criteria include trr < 40 ns, VF ≤ 1.9 V at rated current, thermal resistance (RθJC) ≤ 1.5 °C/W, and TO-220F isolation compliance for AC-DC adapter and server PSU designs.

Technical Context

This ultrafast rectifier employs platinum-doped silicon to achieve tightly controlled minority carrier lifetime, enabling fast turn-off with low reverse recovery charge (Qrr = 45 nC). Its soft recovery characteristic minimizes EMI generation during commutation in boost and LLC resonant converters.

The device integrates a monolithic die mounted on a copper tab with internal solder bond and glass-passivated junction. Thermal performance is optimized for conduction-limited operation up to 15 A DC with case temperature maintained ≤ 115 °C under forced-air cooling.

Key Specifications

Pinout & Package

FFPF15U20DPTU uses the TO-220F (full-pack) package with insulated tab, 3-pin configuration, and creepage/clearance compliant for reinforced insulation per IEC 60950-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultrafast rectifier applications.

Compared with STTH1602CT and IXYS MUR1520CT, the FFPF15U20DPTU provides certified reinforced insulation in a single-diode configuration, enabling simplified safety-compliant layout in medical and industrial AC-DC systems without added isolation hardware.

Availability

FFPF15U20DPTU is available at Aetrix Electronics and suitable for server power supplies, industrial AC-DC adapters, and telecom rectifier modules requiring stable component supply and long-term lifecycle support.

Supply support for FFPF15U20DPTU includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

ON Semiconductor is a global semiconductor supplier delivering energy-efficient, high-performance silicon solutions for automotive, industrial, cloud computing, and communications markets.

The FFPF15U20DPTU belongs to ON Semiconductor's Ultrafast Recovery Diode product line, engineered specifically for high-efficiency, high-frequency switch-mode power conversion where low Qrr and soft recovery are critical.

FAQ

What is the maximum junction temperature rating for FFPF15U20DPTU?

The FFPF15U20DPTU has a maximum junction temperature (TJ) rating of 150 °C. This specification allows operation in high-ambient environments such as enclosed server chassis or industrial enclosures. Derating curves in the official ON Semiconductor datasheet define allowable current versus case temperature, ensuring reliable performance up to the absolute TJ limit. The FFPF15U20DPTU must be mounted with appropriate thermal interface material to maintain TJ ≤ 150 °C under full-load conditions.

Does FFPF15U20DPTU have an electrically isolated package?

Yes, the FFPF15U20DPTU uses a TO-220F full-pack package with an electrically isolated metal tab rated to 2500 V RMS isolation per UL 60950-1. This eliminates the need for insulating washers or pads when mounting to grounded heatsinks. The isolation is achieved via molded thermoset plastic encapsulation around the die attach and leadframe. This feature is integral to the FFPF15U20DPTU design and verified in ON Semiconductor's safety certification reports.

What is the reverse recovery charge (Qrr) of FFPF15U20DPTU and how is it measured?

The FFPF15U20DPTU has a typical reverse recovery charge (Qrr) of 45 nC, measured at IF = 15 A, VR = 100 V, di/dt = 100 A/µs, and TJ = 25 °C. Qrr is extracted from the reverse recovery waveform integral during the storage and transition phases. This value directly influences snubber design and EMI filter sizing in high-frequency PFC circuits. The FFPF15U20DPTU maintains Qrr stability across temperature, varying less than ±15% from –40 to +125 °C.

Can FFPF15U20DPTU replace standard FRD diodes in existing 200 V designs?

Yes, the FFPF15U20DPTU can directly replace standard fast recovery diodes rated for 200 V and ≥15 A average current, provided thermal and layout constraints allow for TO-220F mounting. Its lower trr (35 ns vs. 50–100 ns) and soft recovery reduce switching losses and EMI. However, verify that the existing heatsink accommodates the TO-220F outline and that no electrical shorts occur due to the insulated tab's different mounting behavior compared to non-isolated FRDs.

Is FFPF15U20DPTU suitable for use in synchronous rectification circuits?

The FFPF15U20DPTU is not a synchronous rectifier IC but serves as a high-performance freewheeling or output rectifier in topologies where synchronous MOSFETs are impractical - e.g., high-voltage secondary sides or transient-heavy loads. It complements synchronous designs by providing robust body-diode emulation during dead-time or fault conditions. Its soft recovery and low Qrr make the FFPF15U20DPTU especially valuable in hybrid synchronous/freewheeling configurations found in high-density LLC converters.