Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Taiwan Semiconductor Corporation SSL34 R7G

Name: SSL34 R7G
Brand: Taiwan Semiconductor Corporation
SKU: SSL34 R7G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SSL34 R7G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AB, SMC

Datasheet:: SSL34 R7G.pdf

Description:: DIODE SCHOTTKY 40V 3A DO214AB

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:9,714

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

SSL34 R7G from Taiwan Semiconductor is a 40 V, 3 A surface-mount Schottky barrier rectifier in DO-214AB (SMC) package, featuring 0.41 V forward voltage at 3 A and 100 A peak surge current, used in high-efficiency SMPS secondary-side rectification.

For engineers reviewing the SSL34 R7G datasheet, SSL34 R7G pinout, SSL34 R7G application, or SSL34 R7G equivalent, key selection factors include repetitive peak reverse voltage (40 V), thermal resistance (R_θJL = 13 °C/W), junction temperature limit (125 °C), and moisture sensitivity level (MSL 1).

Technical Context

This Schottky rectifier uses a single-die construction with guard ring overvoltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its low VF and high IFSM support high-frequency switching topologies where conduction loss minimization is critical.

Thermal performance is characterized on a 16 mm × 16 mm Cu pad PCB: R_θJA = 53 °C/W and R_θJC = 15 °C/W. Reverse leakage is specified at 500 µA (T_J = 25 °C) and 100 mA (T_J = 100 °C), confirming stable operation under elevated temperature stress.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	40 V - Maximum non-repetitive reverse voltage the device blocks without breakdown
I_F	3 A - Continuous average forward current rating at T_A = 25 °C
I_FSM	100 A - Peak non-repetitive surge current capability (8.3 ms half-sine)
V_F	0.41 V - Forward voltage drop at 3 A and 25 °C, directly determining conduction loss
T_J max	125 °C - Maximum allowable junction temperature for reliable long-term operation
R_θJL	13 °C/W - Junction-to-lead thermal resistance, critical for heatsinking via PCB copper
MSL	Level 1 - No floor life limitation; safe for standard SMT reflow without baking

Pinout & Package

DO-214AB (SMC) surface-mount package with cathode indicated by molded band; leads are matte tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node (e.g., transformer secondary center-tap or output rail return)
Cathode	Forward current exit point	Connected to positive output rail; marked by visible band on body

Key Features

Feature	Design Value
Guard ring structure	Enhances ruggedness against transient overvoltage without external snubbers
Low forward voltage (0.41 V)	Reduces power dissipation by ~30% vs. comparable 45 V Schottkys at 3 A
High surge rating (100 A)	Withstands repeated inrush and fault currents in AC/DC adapters and LED drivers
Halogen-free & RoHS-compliant	Meets global environmental compliance requirements for industrial and consumer end equipment

Applications

SMPS Secondary Rectification	LED Driver Output Stage
Use Scenario: 48 V input, 12 V/3 A isolated flyback converter powering telecom interface cards. IC Role / Device Role / Timing Role: Primary unidirectional power conversion element on secondary side, replacing fast recovery diodes. Use Value: Enables >92% efficiency at full load due to 0.41 V V_F, reducing thermal load on output rectifier PCB area.	Use Scenario: Constant-current LED driver for street lighting with 36 V string voltage and 3 A output. IC Role / Device Role / Timing Role: Output freewheeling and rectification diode in buck-derived topology. Use Value: Low V_F minimizes heat generation near LEDs, extending optical module lifetime in enclosed housings.
AC/DC Adapter Output	DC-DC Converter Input Protection
Use Scenario: 19 V/3 A laptop adapter with active clamp flyback architecture. IC Role / Device Role / Timing Role: Synchronous rectifier replacement in cost-sensitive designs where gate drive complexity is avoided. Use Value: Delivers same efficiency as synchronous solution at lower BOM cost and zero control overhead.	Use Scenario: 24 V industrial DC-DC module accepting wide-input range (18–36 V) with reverse polarity protection. IC Role / Device Role / Timing Role: Polarity protection diode in series with input rail, leveraging low V_F to minimize dropout. Use Value: Limits input voltage loss to ≤0.41 V at 3 A, preserving regulation headroom across operating temperature range.

SMPS Secondary Rectification

LED Driver Output Stage

Use Scenario: 48 V input, 12 V/3 A isolated flyback converter powering telecom interface cards.

IC Role / Device Role / Timing Role: Primary unidirectional power conversion element on secondary side, replacing fast recovery diodes.

Use Value: Enables >92% efficiency at full load due to 0.41 V V_F, reducing thermal load on output rectifier PCB area.

Use Scenario: Constant-current LED driver for street lighting with 36 V string voltage and 3 A output.

IC Role / Device Role / Timing Role: Output freewheeling and rectification diode in buck-derived topology.

Use Value: Low V_F minimizes heat generation near LEDs, extending optical module lifetime in enclosed housings.

AC/DC Adapter Output

DC-DC Converter Input Protection

Use Scenario: 19 V/3 A laptop adapter with active clamp flyback architecture.

IC Role / Device Role / Timing Role: Synchronous rectifier replacement in cost-sensitive designs where gate drive complexity is avoided.

Use Value: Delivers same efficiency as synchronous solution at lower BOM cost and zero control overhead.

Use Scenario: 24 V industrial DC-DC module accepting wide-input range (18–36 V) with reverse polarity protection.

IC Role / Device Role / Timing Role: Polarity protection diode in series with input rail, leveraging low V_F to minimize dropout.

Use Value: Limits input voltage loss to ≤0.41 V at 3 A, preserving regulation headroom across operating temperature range.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VS-3EWH04-M3/45	Same 40 V V_RRM, 3 A I_F, but higher V_F (0.52 V typ), DO-214AB package	Higher conduction loss limits use in thermally constrained LED drivers	Prefer SSL34 R7G where <0.45 V V_F is required for efficiency targets
ON Semiconductor SB340-TB	40 V V_RRM, 3 A I_F, V_F = 0.55 V max, same DO-214AB footprint	Higher thermal resistance (R_θJA = 65 °C/W) reduces power handling at ambient >60 °C	SSL34 R7G offers superior thermal performance and lower leakage at 100 °C junction

Compared with VS-3EWH04-M3/45 and SB340-TB, SSL34 R7G delivers the lowest forward voltage (0.41 V) and best thermal resistance (R_θJL = 13 °C/W), making it optimal for space-constrained, high-efficiency 3 A rectification where thermal margin and conduction loss are design-critical.

Availability

SSL34 R7G is available at Aetrix Electronics and suitable for switching mode power supplies, LED drivers, and AC/DC adapters requiring stable component supply and MSL-1 handling for automated assembly.

Supply support for SSL34 R7G 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 industrial, computing, and consumer markets since 1979.

The SSL3x series was designed specifically for high-current, low-VF Schottky rectification in compact SMC-packaged power supplies, balancing surge robustness, thermal performance, and environmental compliance.

FAQ

What is the maximum repetitive peak reverse voltage rating for SSL34 R7G?

The SSL34 R7G has a maximum repetitive peak reverse voltage (V_RRM) of 40 V, verified per Taiwan Semiconductor's K2310 datasheet revision. This rating defines the highest reverse-biased voltage the device can block continuously without avalanche breakdown. It is strictly limited to 40 V - using SSL34 R7G in circuits with >40 V reverse transients requires external clamping or derating.

Does SSL34 R7G have a defined moisture sensitivity level (MSL) for reflow soldering?

Yes, SSL34 R7G is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and may be subjected to standard lead-free reflow profiles without prior baking. This is confirmed in the "MECHANICAL DATA" section of the official datasheet and applies to the DO-214AB (SMC) package variant shipped as SSL34 R7G.

What is the forward voltage of SSL34 R7G at its rated 3 A current?

The forward voltage (V_F) of SSL34 R7G is specified as a maximum of 0.41 V at I_F = 3 A and T_J = 25 °C, per the "ELECTRICAL SPECIFICATIONS" table. This value is measured under pulsed conditions (PW = 0.3 ms) and represents the upper bound for conduction loss calculation in thermal design of SSL34 R7G-based power stages.

Is SSL34 R7G halogen-free and RoHS-compliant?

Yes, SSL34 R7G meets both RoHS Directive 2011/65/EU and halogen-free requirements, as explicitly stated in the "FEATURES" section of the Taiwan Semiconductor datasheet. The molding compound contains no brominated or chlorinated flame retardants, and lead content is below 1000 ppm, satisfying industrial compliance mandates for SSL34 R7G deployment.

What is the peak forward surge current rating for SSL34 R7G?

The SSL34 R7G is rated for a peak forward surge current (I_FSM) of 100 A under an 8.3 ms single half-sine wave condition, as published in the "ABSOLUTE MAXIMUM RATINGS" table. This rating reflects short-duration overload capability during startup or fault events and is validated across the full operating temperature range of −55 °C to +125 °C for SSL34 R7G.

SSL34 R7G 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:: Schottky

Voltage - DC Reverse (Vr) (Max):: 40 V

Current - Average Rectified (Io):: 3A

Voltage - Forward (Vf) (Max) @ If:: 410 mV @ 3 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 500 µA @ 40 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

Operating Temperature - Junction:: -55°C ~ 125°C

SSL34 R7G FAQ

1.How can I place an order for SSL34 R7G through Aetrix?

Please submit a Request for Quotation (RFQ) for SSL34 R7G 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 SSL34 R7G reliable?

The price and inventory of SSL34 R7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SSL34 R7G is usually 5 days.

3.What payment methods are accepted for SSL34 R7G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SSL34 R7G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SSL34 R7G?

SSL34 R7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SSL34 R7G 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 SSL34 R7G?

For technical support, including SSL34 R7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SSL34 R7G requirements.

6.How does Aetrix verify that SSL34 R7G is sourced from the original manufacturer or authorized distributors?

All SSL34 R7G 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 SSL34 R7G meets industry standards.

7.What is the process for return or replacement of SSL34 R7G?

All SSL34 R7G units undergo pre-shipment inspection (PSI). If there is an issue with SSL34 R7G, 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 SSL34 R7G part is unused and in its original packaging.

Return procedure for SSL34 R7G:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…