STMicroelectronics STTH1302CFP

Overview

STTH1302CFP from STMicroelectronics is a dual-center-tap ultrafast rectifier diode in D²PAK package, rated for 200 V repetitive peak reverse voltage, 6.5 A average forward current per diode, and 16 ns typical reverse recovery time. It delivers low conduction losses (VF = 0.81 V typ. at 125 °C, 6.5 A) and high surge capability (70 A, 10 ms), designed for low-voltage, high-frequency DC–DC converters and SMPS freewheeling paths.

For engineers reviewing the STTH1302CFP datasheet, STTH1302CFP pinout, STTH1302CFP application, or STTH1302CFP equivalent, key selection criteria include dual-diode thermal coupling behavior, junction-to-case thermal resistance (1.9 °C/W total), reverse recovery charge (Qrr) vs. dIF/dt dependency, and ECOPACK®2-compliant D²PAK mounting requirements.

Technical Context

This dual-center-tap configuration integrates two independent ultrafast switching diodes sharing a common cathode terminal (K), enabling synchronous rectification or complementary freewheeling in half-bridge and center-tapped topologies. Its 16 ns trr (typ.) and low Qrr support >100 kHz operation while minimizing switching loss and EMI generation.

The device operates up to 175 °C junction temperature with Rth(j-c) = 3 °C/W per diode and 1.9 °C/W total when both diodes conduct simultaneously-requiring thermal derating based on coupled power dissipation using ΔTj(diode1) = P₁×3 + P₂×0.8. The D²PAK package provides direct thermal path via the exposed tab (cathode-connected).

Key Specifications

Pinout & Package

D²PAK (TO-263-3L) package with exposed metal tab (cathode-connected), 3-pin outline: Pin 1 = Anode 1 (A1), Pin 2 = Cathode (K), Pin 3 = Anode 2 (A2). Tab must be electrically isolated from PCB ground unless used as common cathode return path.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultrafast dual-center-tap rectifier applications.

Compared with STTH1302CFP, STTH1202CG offers higher per-diode current but requires manual thermal modeling, while MBR20200CT trades 19 ns slower recovery and 0.11 V higher VF for lower unit cost-making STTH1302CFP optimal for thermally constrained, high-frequency (>150 kHz), and eco-regulated applications.

Availability

STTH1302CFP is available at Aetrix Electronics and suitable for telecom DC–DC converters, industrial SMPS outputs, and automotive DC–DC modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for STTH1302CFP 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STTH ultrafast diode product line targets high-efficiency switch-mode power conversion, emphasizing low trr, low VF at elevated temperature, and robust surge immunity for next-generation power supplies.

FAQ

What is the maximum allowable case temperature for continuous operation?

The STTH1302CFP has a maximum junction temperature of 175 °C and a total junction-to-case thermal resistance of 1.9 °C/W. With 13 A total forward current (6.5 A per diode), power dissipation is ~10.6 W. To maintain Tj ≤175 °C, the case temperature must not exceed 154 °C-requiring ≥11.6 cm² of 2-oz copper with thermal vias under the tab.

Can STTH1302CFP be used in parallel with another identical device?

No-parallel operation is not recommended. The dual-diode structure shares a common cathode and thermal path; paralleling two STTH1302CFP units creates uncontrolled current sharing due to VF mismatch and asymmetric thermal coupling. Use a single higher-current part like STTH1602CW for >13 A needs.

Is the D²PAK tab electrically isolated?

No-the D²PAK tab is internally connected to the cathode (K) terminal. It must be mounted on a non-grounded copper area unless the system design intentionally uses the cathode as the thermal and electrical reference plane. Insulating pads or sil-pad materials are required if isolation from PCB ground is needed.

Does STTH1302CFP support bidirectional current flow?

No-it is a unidirectional rectifier. Current flows only from anode to cathode in each diode. Reverse conduction (cathode to anode) is blocked up to 200 V. For bidirectional applications such as synchronous rectification with MOSFETs, this device serves only the forward conduction path and must be paired with active switches for reverse control.