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

Taiwan Semiconductor Corporation S3MHR7G

Name: S3MHR7G
Brand: Taiwan Semiconductor Corporation
SKU: S3MHR7G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S3MHR7G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AB, SMC

Datasheet:: S3MHR7G.pdf

Description:: DIODE GEN PURP 3A DO214AB

Quantity:: RFQ Add To RFQ list

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Inventory:9,202

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Product details

Overview

S3MHR7G from Taiwan Semiconductor is a 3A, 1000V surface-mount silicon rectifier diode in DO-214AB (SMC) package, featuring glass-passivated junction, low forward voltage drop (1.15 V max at 3 A), high surge capability (100 A @ 8.3 ms), and 150°C maximum junction temperature - used in high-reliability AC/DC front-end stages of industrial SMPS and lighting converters.

For engineers reviewing the S3MHR7G datasheet, S3MHR7G pinout, S3MHR7G application, or S3MHR7G equivalent, key selection criteria include repetitive peak reverse voltage (1000 V), forward current rating (3 A), thermal resistance (R_θJL = 13 °C/W), reverse recovery time (1500 ns), and moisture sensitivity level (J-STD-020 Level 1).

Technical Context

This device is a single-die, standard recovery rectifier optimized for cost-sensitive, medium-frequency switching applications where fast recovery is not required but robust surge handling and thermal stability are critical. It operates with a typical junction capacitance of 60 pF at 4 V and exhibits reverse leakage of only 10 µA at 25°C and rated VR.

The DO-214AB (SMC) package provides high power dissipation capability via low R_θJL (13 °C/W), enabling reliable operation up to 150°C junction temperature. Its cathode band polarity marking and matte tin-plated leads ensure compatibility with automated SMT assembly and J-STD-002 soldering standards.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	1000 V - supports input rectification in universal-input 85–265 VAC SMPS with ≥2× safety margin
I_F	3 A continuous - delivers stable DC output current in compact 30–60 W offline converters
I_FSM	100 A @ 8.3 ms - withstands cold-start inrush surges without failure
V_F	≤1.15 V @ 3 A, 25°C - minimizes conduction loss and heatsink requirements
R_θJL	13 °C/W - enables direct PCB copper pour heat sinking without external heatsink
t_rr	1500 ns - suitable for ≤100 kHz switching topologies with acceptable EMI profile
Junction Temp	−55°C to +150°C - qualified for industrial ambient environments and sealed enclosures

Pinout & Package

DO-214AB (SMC) surface-mount package with molded plastic body (UL 94V-0), matte tin-plated leads, and cathode polarity indicated by a visible band on the case. Weight: 0.210 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	AC input connection point	Accepts incoming alternating waveform; connects to transformer secondary or bridge input
Cathode	DC output connection point	Delivers unidirectional current to bulk capacitor or downstream regulator; marked by cathode band

Key Features

Feature	Design Value
Glass-passivated junction	Enhances long-term reliability under humidity and thermal cycling stress per JESD22-A101
Moisture sensitivity level 1	Enables unlimited floor life before reflow; no baking required prior to assembly
Halogen-free & RoHS-compliant	Meets IPC-1752A material declaration requirements for green electronics manufacturing
J-STD-002 solderable leads	Guarantees wetting performance with lead-free SAC305 and SnPb pastes across standard reflow profiles

Applications

Industrial SMPS Front-End	LED Driver Input Stage
Use Scenario: Rectifying 100–277 VAC line input in enclosed 40 W LED troffer drivers operating at 50–60°C ambient. IC Role / Device Role / Timing Role: Primary AC-to-DC conversion element; conducts during positive half-cycles and blocks reverse voltage during negative half-cycles. Use Value: 1000 V V_RRM ensures margin against line transients; 100 A I_FSM handles lamp-strike surges without degradation.	Use Scenario: Input rectification in Class II isolated flyback converters powering streetlight modules with wide input range (90–305 VAC). IC Role / Device Role / Timing Role: Unidirectional current path establishing DC bus for primary-side controller ICs like UCC28780. Use Value: Low R_θJL (13 °C/W) allows direct thermal coupling to ground plane, reducing need for thermal vias or external heatsinks.
AC/DC Adapter Secondary	DC-DC Converter Input Protection
Use Scenario: Output rectification in 24 V/2.5 A wall adapters feeding PoE-powered devices. IC Role / Device Role / Timing Role: Conducts forward current during transformer secondary positive swing; blocks reverse voltage during flyback phase. Use Value: 1.15 V V_F maximizes efficiency at full load; 3 A I_F rating supports sustained output without derating at 50°C ambient.	Use Scenario: Reverse-polarity and backfeed protection at input of 48 V telecom DC-DC modules subjected to hot-swap events. IC Role / Device Role / Timing Role: Standby blocking diode preventing battery or backup supply backfeeding into main rail. Use Value: 150°C T_JMAX and −55°C to +150°C storage range support operation in unventilated telecom chassis with localized heating.

Industrial SMPS Front-End

LED Driver Input Stage

Use Scenario: Rectifying 100–277 VAC line input in enclosed 40 W LED troffer drivers operating at 50–60°C ambient.

IC Role / Device Role / Timing Role: Primary AC-to-DC conversion element; conducts during positive half-cycles and blocks reverse voltage during negative half-cycles.

Use Value: 1000 V V_RRM ensures margin against line transients; 100 A I_FSM handles lamp-strike surges without degradation.

Use Scenario: Input rectification in Class II isolated flyback converters powering streetlight modules with wide input range (90–305 VAC).

IC Role / Device Role / Timing Role: Unidirectional current path establishing DC bus for primary-side controller ICs like UCC28780.

Use Value: Low R_θJL (13 °C/W) allows direct thermal coupling to ground plane, reducing need for thermal vias or external heatsinks.

AC/DC Adapter Secondary

DC-DC Converter Input Protection

Use Scenario: Output rectification in 24 V/2.5 A wall adapters feeding PoE-powered devices.

IC Role / Device Role / Timing Role: Conducts forward current during transformer secondary positive swing; blocks reverse voltage during flyback phase.

Use Value: 1.15 V V_F maximizes efficiency at full load; 3 A I_F rating supports sustained output without derating at 50°C ambient.

Use Scenario: Reverse-polarity and backfeed protection at input of 48 V telecom DC-DC modules subjected to hot-swap events.

IC Role / Device Role / Timing Role: Standby blocking diode preventing battery or backup supply backfeeding into main rail.

Use Value: 150°C T_JMAX and −55°C to +150°C storage range support operation in unventilated telecom chassis with localized heating.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH3L06S	600 V V_RRM, 3 A, faster trr (≈75 ns), higher V_F (1.7 V)	Better suited for PFC boost stages requiring fast recovery; less margin for 277 VAC transients	Select when system operates <600 V peak and requires lower EMI from reduced reverse recovery charge
VS-3EYH02-M3/54	200 V V_RRM, 3 A, ultrafast trr (35 ns), halogen-free	Designed for low-voltage DC-DC inputs; insufficient for universal AC line rectification	Only viable in low-V_IN systems such as 24 VDC-fed converters where surge immunity is less critical

Compared with STTH3L06S and VS-3EYH02-M3/54, the S3MHR7G offers superior voltage margin (1000 V) and surge robustness (100 A) at the expense of slower recovery - making it optimal for cost-driven, thermally constrained, medium-frequency AC/DC front ends where transient immunity outweighs switching speed.

Availability

S3MHR7G is available at Aetrix Electronics and suitable for industrial SMPS, LED driver input stages, AC/DC adapters, and DC-DC converter input protection requiring stable component supply and long-term manufacturability.

Supply support for S3MHR7G 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 diodes, MOSFETs, and bipolar transistors since 1979.

The S3A–S3M series was developed to deliver high-voltage, high-surge-capability rectifiers in industry-standard SMC packages for cost-sensitive, high-volume power conversion applications across lighting, industrial, and consumer markets.

FAQ

What is the maximum repetitive peak reverse voltage rating for S3MHR7G?

The S3MHR7G has a maximum repetitive peak reverse voltage (V_RRM) of 1000 V. This rating is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version O2301), where "S3M" corresponds to the 1000 V variant in the S3A–S3M family. The S3MHR7G is therefore suitable for universal-input AC/DC designs with transient overvoltage margins exceeding 2× nominal line voltage.

Does S3MHR7G have a halogen-free and RoHS-compliant construction?

Yes, the S3MHR7G is both halogen-free and RoHS-compliant, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. The molding compound and plating meet IPC-1752A material declaration requirements, and the device carries the "G" suffix in its marking code (S3MHR7G), which denotes green compound per TSC's internal coding convention.

What is the forward voltage drop of S3MHR7G at rated current?

The forward voltage drop (V_F) of the S3MHR7G is specified as a maximum of 1.15 V at 3 A forward current and 25°C junction temperature. This value is measured under pulsed conditions (PW = 0.3 ms) and represents worst-case conduction loss for thermal design - actual V_F decreases at lower currents and increases slightly at elevated temperatures.

Is S3MHR7G suitable for automated SMT assembly?

Yes, the S3MHR7G is designed for automated placement and reflow soldering. Its DO-214AB (SMC) package features matte tin-plated leads compliant with J-STD-002, moisture sensitivity level 1 (unlimited floor life), and standardized tape-and-reel packaging (3000 pcs per reel), all verified in the Mechanical Data and Ordering Information sections of the official datasheet.

What is the thermal resistance from junction to lead for S3MHR7G?

The junction-to-lead thermal resistance (R_θJL) of the S3MHR7G is 13 °C/W, as published in the Thermal Performance table of the Taiwan Semiconductor datasheet. This low value enables efficient heat transfer from the die directly into the PCB copper land, supporting thermal management without additional heatsinking in many 3 A applications.

S3MHR7G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AB, SMC

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 1000 V

Current - Average Rectified (Io):: 3A

Voltage - Forward (Vf) (Max) @ If:: 1.15 V @ 3 A

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

Reverse Recovery Time (trr):: 1.5 µs

Current - Reverse Leakage @ Vr:: 5 µA @ 1000 V

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AB (SMC)

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

S3MHR7G FAQ

1.How can I place an order for S3MHR7G through Aetrix?

Please submit a Request for Quotation (RFQ) for S3MHR7G 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 S3MHR7G reliable?

The price and inventory of S3MHR7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S3MHR7G is usually 5 days.

3.What payment methods are accepted for S3MHR7G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S3MHR7G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S3MHR7G?

S3MHR7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S3MHR7G 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 S3MHR7G?

For technical support, including S3MHR7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S3MHR7G requirements.

6.How does Aetrix verify that S3MHR7G is sourced from the original manufacturer or authorized distributors?

All S3MHR7G 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 S3MHR7G meets industry standards.

7.What is the process for return or replacement of S3MHR7G?

All S3MHR7G units undergo pre-shipment inspection (PSI). If there is an issue with S3MHR7G, 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 S3MHR7G part is unused and in its original packaging.

Return procedure for S3MHR7G:

1.Submit a request within 90 days.

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

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