Taiwan Semiconductor Corporation SS19 M2G

Overview

SS19 M2G from Taiwan Semiconductor is a 1A, 90V Schottky barrier surface-mount rectifier in DO-214AC (SMA) package, optimized for high-efficiency DC/DC conversion with low forward voltage (0.80 V at 1A, 25°C), high surge current capability (40 A), and junction temperature up to +150°C. It serves as a primary output rectifier in compact power adapters and SMPS.

For engineers reviewing the SS19 M2G datasheet, SS19 M2G pinout, SS19 M2G application, or SS19 M2G equivalent, key selection criteria include its 90V repetitive peak reverse voltage, 0.80 V forward drop at rated current, 100 μA reverse leakage at 25°C, thermal resistance (R_θJL = 28°C/W), and DO-214AC mechanical compatibility with automated SMT assembly.

Technical Context

The SS19 M2G implements a single-die Schottky junction structure with guard ring overvoltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its 90 V_RRM rating targets mid-voltage secondary-side rectification where low conduction loss and fast switching are critical.

Thermal performance is defined by R_θJL = 28°C/W and R_θJA = 88°C/W, supporting continuous 1 A operation up to +125°C ambient when mounted on standard PCB copper area. Reverse leakage remains ≤100 μA at 25°C and ≤2 mA at 125°C under rated reverse voltage.

Key Specifications

Pinout & Package

DO-214AC (SMA) surface-mount package with cathode indicated by molded band; lead-free, halogen-free, RoHS-compliant construction; moisture sensitivity level 1 per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SS19 M2G, SS19HE3/5BT offers nearly identical electrical behavior but slightly reduced thermal efficiency, while SS19H trades 0.05 V higher forward drop and elevated leakage for broader second-source availability-both require no PCB layout change but warrant verification of thermal margin and standby current compliance.

Availability

SS19 M2G is available at Aetrix Electronics and suitable for power adapters, SMPS secondary rectification, and monitor power supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for SS19 M2G 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 since 1979.

The SS12–SS115 series was designed specifically for cost-sensitive, high-volume AC/DC and DC/DC power conversion applications demanding low VF, high IFSM, and robust thermal performance in standard SMA packages.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for SS19 M2G?

The SS19 M2G has a V_RRM of 90 V, verified in the Absolute Maximum Ratings table of Taiwan Semiconductor's SS12–SS115 datasheet (Rev R2305). This rating applies across the full operating temperature range and defines the highest reverse voltage the device can block repeatedly without breakdown. Designers must maintain at least 20% margin below this value in steady-state operation to ensure reliability under transient conditions. The SS19 M2G is not rated for 100 V or higher reverse stress.

What is the forward voltage (V_F) of SS19 M2G at 1 A and 25°C?

The SS19 M2G exhibits a typical forward voltage of 0.80 V at 1 A and 25°C, as specified in the Electrical Specifications table (page 2, Rev R2305). This value is measured under pulse test conditions (PW = 0.3 ms) and reflects low conduction loss critical for high-efficiency power conversion. At 100°C junction temperature, V_F drops to 0.70 V, confirming positive temperature coefficient behavior consistent with Schottky diode physics.

Is SS19 M2G RoHS-compliant and halogen-free?

Yes, SS19 M2G is RoHS-compliant and halogen-free, as explicitly stated in the Features section (page 1, Rev R2305) and confirmed in the Mechanical Data section. The molding compound meets UL 94V-0 flammability rating, and terminals are matte tin plated per J-STD-002. These attributes satisfy environmental compliance requirements for consumer, industrial, and computing end equipment without requiring material declarations beyond standard RoHS reporting.

What package type does SS19 M2G use, and what are its key mechanical features?

SS19 M2G uses the DO-214AC (SMA) surface-mount package, detailed in the Package Outline Dimensions section (page 7, Rev R2305). Key features include 4.60 mm body length, 2.83 mm body width, 2.30 mm height, cathode band polarity marking, and JESD201 Class 2 whisker resistance. The package supports 7,500 units per tape-and-reel and is rated MSL Level 1, enabling direct SMT placement without pre-baking.

What is the peak forward surge current (I_FSM) rating for SS19 M2G?

The SS19 M2G is rated for a peak forward surge current (I_FSM) of 40 A, defined for an 8.3 ms single half-sine wave superimposed on rated load (Absolute Maximum Ratings, page 1, Rev R2305). This rating ensures survivability during cold-start inrush, output short-circuit recovery, and line-voltage transients in offline power supplies. Derating curves in Figure 11 confirm sustained surge capability down to 25 A at 100°C ambient.