Taiwan Semiconductor Corporation SS13LH

Overview

SS13LH from Taiwan Semiconductor is a 1 A, 30 V Schottky barrier surface-mount rectifier optimized for low-loss DC/DC conversion and reverse battery protection in automotive and industrial power supplies. It features a maximum forward voltage of 0.430 V at 0.5 A and 25°C, 30 A peak surge current capability, AEC-Q101 qualification, and Sub SMA package with matte tin-plated leads.

For engineers reviewing the SS13LH datasheet, SS13LH pinout, SS13LH application, or SS13LH equivalent, key selection criteria include its 30 V repetitive peak reverse voltage, low VF at low IF, high dV/dt rating (10,000 V/μs), junction temperature range up to +150°C, and moisture sensitivity level 1 compliance - all critical for under-hood automotive designs and high-reliability embedded power rails.

Technical Context

The SS13LH is a single-die, unidirectional Schottky rectifier with cathode-band polarity indication and guard ring structure for overvoltage robustness. Its thermal design supports R_θJL = 45°C/W and R_θJA = 100°C/W, enabling operation up to 150°C junction temperature under defined PCB copper area conditions.

Electrical behavior is characterized by low conduction loss (VF ≤ 0.500 V at 1.0 A, 25°C) and tightly controlled leakage: IR ≤ 400 µA at 30 V and 25°C, rising to ≤ 6 mA at 100°C - making it suitable for thermally constrained, high-efficiency 12 V–24 V system rails where reverse recovery loss must be eliminated.

Key Specifications

Pinout & Package

Package: Sub SMA - Surface-mount plastic package with gull-wing leads, UL 94V-0 molding compound, and matte tin-plated terminals compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-1EQH03-M3/5AT and SB130, the SS13LH delivers lower forward voltage, superior thermal performance, and certified automotive qualification - making it the optimal choice for safety-critical 24 V systems requiring long-term reliability and minimal conduction loss.

Availability

SS13LH is available at Aetrix Electronics and suitable for automotive reverse battery protection, DC/DC converter freewheeling, and industrial 24 V power rail clamping requiring stable component supply, consistent AEC-Q101 compliance, and traceable lot-level sourcing.

Supply support for SS13LH 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 automotive and industrial markets.

The SS1xLH series was developed specifically for high-reliability, low-VF Schottky rectification in space-constrained 12 V–48 V automotive and industrial power systems - emphasizing AEC-Q101 compliance, thermal robustness, and manufacturability in automated SMT lines.

FAQ

What is the maximum junction temperature rating for SS13LH?

The SS13LH has a maximum junction temperature (T_J) rating of +150°C, verified per AEC-Q101 stress testing. This allows operation in high-ambient environments such as engine control units or sealed industrial enclosures without additional derating beyond the published forward current derating curve. The SS13LH maintains specified electrical parameters up to this limit when thermal design adheres to the Sub SMA pad layout recommendations.

Is SS13LH suitable for reverse battery protection in automotive applications?

Yes, the SS13LH is explicitly qualified to AEC-Q101 and designed for reverse battery protection. Its 30 V V_RRM, low 0.430 V forward voltage at 0.5 A, and 30 A surge rating make it ideal for placement between battery and ECU input. The guard ring structure enhances robustness against transients, and moisture sensitivity level 1 simplifies manufacturing - all confirmed in Taiwan Semiconductor's SS1xLH datasheet Version A2103.

What is the marking code for SS13LH on the device body?

The SS13LH is marked with "13L" on the device body, as specified in the ordering information table of the official datasheet. This two-character code distinguishes it within the SS1xLH family and corresponds directly to its 30 V V_RRM rating. No additional suffixes or date codes are part of the base marking; factory and date codes appear separately per standard Sub SMA conventions.

Does SS13LH have a halogen-free and RoHS-compliant construction?

Yes, the SS13LH meets both RoHS Directive 2011/65/EU and IEC 61249-2-21 halogen-free requirements. The molding compound contains no brominated flame retardants or chlorine-based additives, and lead content is below 1000 ppm. This compliance is documented in Taiwan Semiconductor's product specification sheet Version A2103 and verified through third-party material declarations.

What is the thermal resistance from junction to ambient (R_θJA) for SS13LH?

The SS13LH has a typical junction-to-ambient thermal resistance (R_θJA) of 100°C/W under standard JEDEC test conditions (single-layer 1 in² copper pad). This value assumes no internal thermal vias or enhanced PCB copper; actual performance improves with larger pads or thermal vias. R_θJL is 45°C/W, indicating efficient heat transfer to the PCB lead frame - critical for sustained 1 A operation in confined layouts.