Taiwan Semiconductor Corporation SRA1690

Overview

SRA1690 from Taiwan Semiconductor is a 16A, 90V Schottky barrier rectifier in TO-220AC package, designed for high-efficiency DC/DC conversion and SMPS output stages with low forward voltage (0.92 V at 16 A, 25°C) and low reverse leakage (100 µA at 25°C). It supports junction temperatures up to +150°C and handles 200 A non-repetitive surge current.

For engineers reviewing the SRA1690 datasheet, SRA1690 pinout, SRA1690 application, or SRA1690 equivalent, key selection criteria include its 90 V V_RRM, 5 °C/W junction-to-case thermal resistance, AEC-Q101 qualification option (SRA1690H), RoHS/halogen-free compliance, and suitability for automotive power supplies and industrial adapters requiring robust surge capability and thermal stability.

Technical Context

The SRA1690 operates as a single-die, unidirectional Schottky rectifier with guard ring overvoltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its 90 V repetitive peak reverse voltage and 0.92 V forward voltage at rated current define its use in mid-voltage switching topologies where conduction loss minimization is critical.

Thermally, it delivers 5 °C/W junction-to-case resistance and supports continuous operation from –55°C to +150°C, enabling reliable mounting on heatsinks in space-constrained power modules. Reverse leakage remains ≤5 mA at 125°C, supporting stable performance under elevated ambient conditions.

Key Specifications

Pinout & Package

Package: TO-220AC - Standard 3-lead through-hole outline with isolated tab (cathode-connected), UL 94V-0 molding compound, and matte tin-plated leads. Mounting torque ≤0.56 N·m. Polarity marked on device body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-16CTQ090PbF and MBR1690CT, the SRA1690 offers superior high-temperature reverse leakage control (≤5 mA @ 125°C) and AEC-Q101 qualification path-making it preferred for automotive and thermally demanding industrial converters where reliability under thermal stress is prioritized over marginal V_F reduction.

Availability

SRA1690 is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial SMPS outputs, and high-efficiency adapters requiring stable component supply, long-lifecycle support, and traceable sourcing.

Supply support for SRA1690 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

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power rectifiers, TVS devices, and MOSFETs for industrial and automotive markets.

The SRA1620–SRA16100 series was developed to deliver high-current Schottky rectification with enhanced thermal robustness and AEC-Q101 readiness for next-generation power supplies in harsh environments.

FAQ

What is the maximum junction temperature rating for the SRA1690?

The SRA1690 has a maximum junction temperature (T_J) rating of +150°C, verified per absolute maximum ratings table in the official datasheet. This allows continuous operation in high-ambient environments such as automotive under-hood applications or enclosed industrial power supplies. Derating curves confirm usable current capacity down to 0 A at 150°C case temperature, and thermal design must respect the 5 °C/W R_θJC to avoid exceeding this limit. The SRA1690 achieves this rating via optimized die metallization and package construction.

Is the SRA1690 pin-compatible with other parts in the SRA16xx family?

Yes, all SRA16xx parts-including SRA1690-share identical TO-220AC package dimensions, pinout (anode/cathode/tab), and mechanical mounting interface. The only differences are V_RRM (20–100 V), forward voltage, and reverse leakage characteristics. This enables direct substitution during prototyping or BOM optimization without PCB changes, provided voltage and thermal margins are re-verified for the new rating. The SRA1690 specifically uses marking code "SRA1690" on the device body.

Does the SRA1690 have AEC-Q101 qualification?

The base SRA1690 is not AEC-Q101 qualified; however, the AEC-Q101-qualified variant is designated SRA1690H and shares identical electrical and thermal specifications. The "H" suffix indicates full stress testing per AEC-Q101 Rev D, including HTGB, TC, and UHAST. For automotive applications requiring qualification evidence, SRA1690H must be specified and sourced-SRA1690 alone does not carry this certification. Both versions use the same TO-220AC package and marking layout.

What is the forward voltage of the SRA1690 under typical operating conditions?

The SRA1690 exhibits a typical forward voltage (V_F) of 0.92 V at 16 A and 25°C junction temperature, measured with 0.3 ms pulse width. At higher temperatures (e.g., 125°C), V_F decreases slightly (~0.85 V), while at lower currents (e.g., 8 A), it drops to ~0.82 V. This V_F value directly determines conduction loss (P_COND ≈ I_F × V_F) and is critical for thermal budgeting. The SRA1690's V_F is higher than lower-voltage SRA16xx variants but optimized for 90 V blocking capability.

How does the SRA1690 handle surge current, and what test waveform applies?

The SRA1690 supports a peak non-repetitive forward surge current (I_FSM) of 200 A, tested using an 8.3 ms single half-sine wave superimposed on rated DC load-per JEDEC standard JESD201. This rating enables reliable operation during cold-start inrush, short-circuit recovery, and transient overload events in SMPS and adapter designs. The surge capability is sustained by robust bond wire and die attachment design, and thermal inertia of the TO-220AC package. The SRA1690 maintains this rating across its full operating temperature range.