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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation S2B M4G

Name: S2B M4G
Brand: Taiwan Semiconductor Corporation
SKU: S2B M4G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S2B M4G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AA, SMB

Datasheet:: S2B M4G.pdf

Description:: DIODE GEN PURP 100V 2A DO214AA

Quantity:: RFQ Add To RFQ list

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Inventory:3,756

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Product details

Overview

S2B M4G from Taiwan Semiconductor is a 2 A, 100 V repetitive peak reverse voltage (V_RRM) standard surface-mount silicon rectifier diode in DO-214AA (SMB) package, featuring glass-passivated junction, low forward voltage drop (≤1.15 V at 2 A), and 50 A surge capability - used in AC/DC front-end rectification for compact switch-mode power supplies.

For engineers reviewing the S2B M4G datasheet, S2B M4G pinout, S2B M4G application, or S2B M4G equivalent, key selection criteria include verified V_RRM = 100 V, I_F = 2 A continuous rating, trr = 1500 ns recovery time, R_θJA = 53 °C/W thermal resistance, and SMB package compatibility with automated SMT assembly.

Technical Context

This standard recovery rectifier uses a single-die silicon PN junction with glass passivation to ensure stable reverse leakage (<1 µA at 25°C, <125 µA at 125°C) and robust surge tolerance (50 A, 8.3 ms half-sine). Its 1500 ns reverse recovery time reflects conventional diffusion-based construction, not fast or ultrafast switching optimization.

Thermal performance is defined by R_θJL = 16 °C/W (junction-to-lead) and R_θJA = 53 °C/W (junction-to-ambient), supporting operation up to +150°C junction temperature. The device is rated for moisture sensitivity level 1 per J-STD-020 and complies with RoHS and halogen-free standards (IEC 61249-2-21).

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - maximum non-repetitive reverse voltage the diode blocks without breakdown
I_F	2 A - continuous average forward current rating at case temperature ≤75°C
I_FSM	50 A - peak non-repetitive surge current (8.3 ms half-sine) for transient overload handling
V_F	≤1.15 V @ 2 A, 25°C - forward conduction loss directly impacts efficiency and thermal design
t_rr	1500 ns - reverse recovery time determines switching losses in high-frequency SMPS designs
R_θJA	53 °C/W - thermal resistance from junction to ambient defines heatsinking requirements on PCB
Junction Temp	–55°C to +150°C - operating range compatible with industrial and consumer power supply environments

Pinout & Package

Package: DO-214AA (SMB), surface-mount, molded plastic case with matte tin-plated leads; polarity indicated by cathode band; weight ≈ 0.090 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Lead 1)	Forward current entry point	Connected to AC input or transformer secondary side; must withstand surge currents and thermal cycling
Cathode (Lead 2)	Forward current exit / reverse blocking terminal	Marked with band; connects to output capacitor or DC bus; reverse leakage <1 µA at rated V_RRM

Key Features

Feature	Design Value
Glass-passivated junction	Ensures long-term reliability and stable reverse leakage under humidity and thermal stress
Moisture sensitivity level 1	Enables direct placement without baking, reducing manufacturing overhead and yield risk
UL 94V-0 molding compound	Meets flammability safety requirements for end-equipment certifications (e.g., UL/EN 62368)
JESD 201 Class 2 whisker resistance	Prevents tin whisker growth in high-reliability applications over extended service life
Halogen-free construction	Complies with IEC 61249-2-21 for environmentally restricted markets and recycling compliance

Applications

AC/DC Adapter Rectification	LED Driver Input Stage
Use Scenario: Converts 50/60 Hz AC line voltage to pulsating DC in wall-wart adapters rated ≤30 W. IC Role / Device Role / Timing Role: Primary-side standard rectifier conducting during positive half-cycles; handles 2 A average load with 50 A surge margin. Use Value: Low V_F (≤1.15 V) minimizes conduction loss; SMB package enables compact board layout and automated assembly.	Use Scenario: Rectifies AC input before buck or flyback controller in indoor/outdoor LED drivers. IC Role / Device Role / Timing Role: Front-end uncontrolled rectifier feeding bulk capacitor; operates continuously at 2 A with thermal derating above 75°C. Use Value: 150°C max junction temperature supports enclosed, thermally constrained LED fixture environments.
Industrial SMPS Input Stage	DC-DC Converter Auxiliary Supply
Use Scenario: Input rectification in 24 V/48 V industrial power modules with wide ambient temperature range. IC Role / Device Role / Timing Role: Standard recovery diode in bridge or single-phase configuration; withstands line surges per IEC 61000-4-5. Use Value: 50 A I_FSM provides margin against lightning-induced transients; RoHS/halogen-free compliance meets regional regulations.	Use Scenario: Generates bias rail for gate drivers or controllers in isolated DC-DC converters. IC Role / Device Role / Timing Role: Secondary-side rectifier delivering low-current auxiliary power (e.g., 12 V @ 100 mA) with minimal footprint. Use Value: SMB package allows dense layout near controller IC; R_θJA = 53 °C/W enables natural convection cooling without heatsink.

AC/DC Adapter Rectification

LED Driver Input Stage

Use Scenario: Converts 50/60 Hz AC line voltage to pulsating DC in wall-wart adapters rated ≤30 W.

IC Role / Device Role / Timing Role: Primary-side standard rectifier conducting during positive half-cycles; handles 2 A average load with 50 A surge margin.

Use Value: Low V_F (≤1.15 V) minimizes conduction loss; SMB package enables compact board layout and automated assembly.

Use Scenario: Rectifies AC input before buck or flyback controller in indoor/outdoor LED drivers.

IC Role / Device Role / Timing Role: Front-end uncontrolled rectifier feeding bulk capacitor; operates continuously at 2 A with thermal derating above 75°C.

Use Value: 150°C max junction temperature supports enclosed, thermally constrained LED fixture environments.

Industrial SMPS Input Stage

DC-DC Converter Auxiliary Supply

Use Scenario: Input rectification in 24 V/48 V industrial power modules with wide ambient temperature range.

IC Role / Device Role / Timing Role: Standard recovery diode in bridge or single-phase configuration; withstands line surges per IEC 61000-4-5.

Use Value: 50 A I_FSM provides margin against lightning-induced transients; RoHS/halogen-free compliance meets regional regulations.

Use Scenario: Generates bias rail for gate drivers or controllers in isolated DC-DC converters.

IC Role / Device Role / Timing Role: Secondary-side rectifier delivering low-current auxiliary power (e.g., 12 V @ 100 mA) with minimal footprint.

Use Value: SMB package allows dense layout near controller IC; R_θJA = 53 °C/W enables natural convection cooling without heatsink.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MUR220	V_RRM = 200 V, t_rr = 75 ns (ultrafast), V_F = 1.15 V @ 2 A	Better suited for higher-frequency (>100 kHz) SMPS where recovery loss dominates	Select when lower switching loss outweighs cost premium and no V_RRM derating needed
Vishay VS-2EYH01-M3/54	V_RRM = 100 V, I_F = 2 A, t_rr = 2000 ns, V_F = 1.1 V @ 2 A, same SMB package	Nearly identical electrical envelope but slightly slower recovery and tighter V_F tolerance	Drop-in alternative if 1500 ns vs. 2000 ns recovery is not critical in target frequency range

Compared with MUR220 and VS-2EYH01-M3/54, the S2B M4G offers balanced cost-performance for 50–100 kHz SMPS where standard recovery is acceptable, while maintaining full SMB footprint compatibility and industry-standard reliability qualifications.

Availability

S2B M4G is available at Aetrix Electronics and suitable for switch-mode power supplies, AC/DC adapters, LED lighting drivers, and industrial DC-DC converters requiring stable component supply and J-STD-020 Level 1 moisture handling.

Supply support for S2B M4G 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, serving global power, automotive, and industrial markets since 1979.

The S2A–S2V series was designed specifically for cost-sensitive, high-volume AC/DC rectification applications demanding reliability, standardized packaging, and regulatory compliance - targeting adapter, lighting, and auxiliary supply segments.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for the S2B M4G?

The S2B M4G has a V_RRM of 100 V, as confirmed in the Absolute Maximum Ratings table across all versions of the S2A–S2V family datasheet. This rating defines the highest reverse voltage the S2B M4G can block repeatedly without breakdown under normal operating conditions, and it is validated per JEDEC test methods.

Does the S2B M4G meet RoHS and halogen-free requirements?

Yes, the S2B M4G is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the FEATURES section of the official Taiwan Semiconductor datasheet. These compliance statements apply directly to the S2B M4G variant within the S2A–S2V family and are verified through material declarations and testing.

What is the reverse recovery time (t_rr) of the S2B M4G and how is it measured?

The S2B M4G has a reverse recovery time (t_rr) of 1500 ns, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A, per the Electrical Specifications table. This value reflects standard recovery behavior and is not optimized for high-frequency switching; it is confirmed in the Characteristics Curves section (Fig. 6).

Is the S2B M4G suitable for automated SMT assembly?

Yes, the S2B M4G is explicitly designed for automated placement, as noted in its FEATURES list. Its DO-214AA (SMB) package, matte tin-plated leads, and J-STD-020 Level 1 moisture sensitivity enable direct placement without pre-baking - a key requirement for high-yield SMT lines handling the S2B M4G.

What is the junction-to-ambient thermal resistance (R_θJA) for the S2B M4G?

The junction-to-ambient thermal resistance (R_θJA) for the S2B M4G is 53 °C/W, as specified in the THERMAL PERFORMANCE section of the datasheet. This value assumes standard JEDEC test board conditions (2s2p copper) and is used to calculate allowable power dissipation based on ambient temperature and required junction temperature margin.

S2B M4G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AA, SMB

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 100 V

Current - Average Rectified (Io):: 2A

Voltage - Forward (Vf) (Max) @ If:: 1.15 V @ 2 A

Speed:: Standard Recovery >500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 1.5 µs

Current - Reverse Leakage @ Vr:: 1 µA @ 100 V

Capacitance @ Vr, F:: 30pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AA (SMB)

Operating Temperature - Junction:: -55°C ~ 150°C

S2B M4G FAQ

1.How can I place an order for S2B M4G through Aetrix?

Please submit a Request for Quotation (RFQ) for S2B M4G on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for S2B M4G reliable?

The price and inventory of S2B M4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S2B M4G is usually 5 days.

3.What payment methods are accepted for S2B M4G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S2B M4G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S2B M4G?

S2B M4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S2B M4G order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for S2B M4G?

For technical support, including S2B M4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S2B M4G requirements.

6.How does Aetrix verify that S2B M4G is sourced from the original manufacturer or authorized distributors?

All S2B M4G products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that S2B M4G meets industry standards.

7.What is the process for return or replacement of S2B M4G?

All S2B M4G units undergo pre-shipment inspection (PSI). If there is an issue with S2B M4G, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The S2B M4G part is unused and in its original packaging.

Return procedure for S2B M4G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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