Taiwan Semiconductor Corporation SS36L

Overview

SS36L from Taiwan Semiconductor is a 3A, 60V Schottky barrier surface-mount rectifier in Sub SMA package, featuring 0.75V forward voltage at 3A/25°C, 80A peak surge current, and 150°C maximum junction temperature. It serves as a high-efficiency output rectifier in DC-DC converters and AC-DC adapters.

For engineers reviewing the SS36L datasheet, SS36L pinout, SS36L application, or SS36L equivalent, key selection criteria include its 60V V_RRM, low VF trade-off versus higher-voltage variants, thermal resistance (R_θJC = 30°C/W), and moisture sensitivity level 1 compliance for automated assembly.

Technical Context

The SS36L employs a single-die Schottky junction optimized for low conduction loss in medium-voltage switching power supplies. Its guard ring structure enhances overvoltage ruggedness, while matte tin-plated leads ensure J-STD-002 solderability and JESD 201 Class 1A whisker resistance.

With R_θJA = 60°C/W and R_θJC = 30°C/W, the device supports thermally constrained layouts. Reverse leakage is specified at 500 µA @ 25°C and 10 mA @ 125°C, reflecting its balanced performance between voltage rating and leakage control.

Key Specifications

Pinout & Package

Package: Sub SMA - Surface-mount plastic package with cathode band polarity marking, UL 94V-0 molding compound, and 0.019g mass. Compatible with standard SMA reflow profiles and automated pick-and-place.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SS34L and SS310L, the SS36L provides the optimal balance of 60V blocking capability and 0.75V forward voltage for mid-range 48V and 54V output converters-reducing thermal stress versus SS310L while offering greater voltage margin than SS34L.

Availability

SS36L is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and DC-DC converters requiring stable component supply, RoHS-compliant packaging, and moisture-insensitive handling.

Supply support for SS36L 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.

The SS36L belongs to TSC's SS3xL Schottky rectifier family, engineered for high-efficiency, surface-mount power conversion in cost-sensitive consumer and industrial power supplies.

FAQ

What is the maximum junction temperature rating for the SS36L?

The SS36L has a maximum junction temperature (T_J) rating of +150°C, enabling reliable operation in thermally demanding environments such as enclosed power adapters or industrial control modules. This rating is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor SS34L–SS310L datasheet (Version C2103). The SS36L maintains full electrical specifications up to this temperature limit.

Does the SS36L have a guard ring structure, and what is its function?

Yes, the SS36L incorporates a guard ring structure as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. This design feature prevents premature edge breakdown under high dv/dt or transient overvoltage conditions, enhancing ruggedness in switching applications. The SS36L's specified critical rate of rise of off-state voltage (dV/dt) is 10,000 V/μs, confirming its robustness in fast-switching topologies.

What is the forward voltage specification for the SS36L at rated current and temperature?

The SS36L exhibits a maximum forward voltage (V_F) of 0.75 V at 3 A forward current and 25°C junction temperature, as documented in the ELECTRICAL SPECIFICATIONS table. This value is measured under pulse test conditions (PW = 0.3 ms) and represents the upper bound for conduction loss calculation in power supply design. At 125°C, V_F decreases slightly due to negative temperature coefficient of Schottky diodes.

Is the SS36L compatible with lead-free reflow soldering processes?

Yes, the SS36L uses matte tin-plated leads that are fully compliant with J-STD-002 for solderability and qualified for lead-free reflow profiles. Its Sub SMA package meets JEDEC moisture sensitivity level 1, eliminating pre-bake requirements. The device's UL 94V-0 molding compound also withstands peak reflow temperatures up to 260°C, making it suitable for standard Pb-free manufacturing lines.

How does the SS36L differ from the SS310L in terms of reverse leakage current?

The SS36L specifies a maximum reverse leakage current (I_R) of 500 µA at 25°C and 10 mA at 125°C, whereas the SS310L specifies 100 µA at 25°C and 5 mA at 125°C. This difference reflects the inherent trade-off in Schottky diodes: higher V_RRM devices like the SS310L use wider-bandgap metallization or process adjustments that reduce leakage but increase forward voltage. The SS36L's higher leakage is acceptable for most 48–54V output applications where efficiency dominates leakage concerns.