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 SR102 R0G

Name: SR102 R0G
Brand: Taiwan Semiconductor Corporation
SKU: SR102 R0G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SR102 R0G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-204AL, DO-41, Axial

Datasheet:: SR102 R0G.pdf

Description:: DIODE SCHOTTKY 20V 1A DO204AL

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:5,634

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

Product details

Overview

SR102 R0G from Taiwan Semiconductor is a 1A, 20V Schottky barrier rectifier in DO-204AL (DO-41) package, featuring low forward voltage drop (0.55 V at 1 A, 25°C), 30 A surge capability, and AEC-Q101 qualification option. It serves as primary output rectifier in compact AC/DC adapters and DC-DC converters where efficiency and thermal reliability are critical.

For engineers reviewing the SR102 R0G datasheet, SR102 R0G pinout, SR102 R0G application, or SR102 R0G equivalent, key selection criteria include verified V_RRM = 20 V, I_F = 1 A continuous rating, T_J max = 125°C, DO-41 mechanical compatibility, and cathode-band polarity marking - all confirmed for this exact ordering variant.

Technical Context

This Schottky rectifier uses a single-die construction with guard ring structure to enhance overvoltage robustness and suppress leakage under transient stress. Its 90°C/W junction-to-ambient thermal resistance and 10,000 V/µs dv/dt rating support stable operation in high-frequency switching topologies up to several hundred kHz.

The device operates across -55°C to +125°C junction temperature range and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements. Pure tin-plated leads ensure solderability per J-STD-002, and halogen-free molding compound complies with IEC 61249-2-21.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	20 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in flyback or buck output stage
I_F	1 A - Continuous forward current rating at TA = 25°C; derates linearly above 25°C ambient
I_FSM	30 A - Non-repetitive surge current (8.3 ms half-sine); supports cold-start and fault-current transients
V_F	0.55 V @ 1 A, 25°C - Low conduction loss improves system efficiency and reduces heatsink demand
T_J max	125°C - Maximum junction temperature; enables use in sealed enclosures without forced airflow
R_θJA	90°C/W - Thermal resistance from junction to ambient; used to calculate temperature rise under real load

Pinout & Package

Package: DO-204AL (DO-41), axial leaded, epoxy-molded case with cathode band marking. Lead finish: pure tin, J-STD-002 compliant. Weight: 0.330 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node (e.g., transformer secondary center-tap or switch node)
Cathode	Forward current exit point	Marked by colored band; connects to output filter capacitor positive terminal

Key Features

Feature	Design Value
Guard ring structure	Improves ruggedness against voltage transients and prevents edge breakdown in high dv/dt environments
AEC-Q101 qualification option	Validated for automotive power supply modules requiring extended reliability and stress testing
Low V_F (0.55 V)	Reduces conduction loss by ~30% vs. comparable Si diodes, lowering thermal design margin requirements
Halogen-free compound	Meets IEC 61249-2-21; supports RoHS-compliant manufacturing and end-of-life recycling
10,000 V/µs dv/dt rating	Enables reliable operation in fast-switching SMPS without snubber networks or gate drive adjustments

Applications

AC/DC Wall Adapters	USB-C PD Power Modules
Use Scenario: 5–20 W offline adapter converting 90–264 VAC to 5–20 VDC with <100 kHz switching frequency. IC Role / Device Role / Timing Role: Output rectifier replacing conventional PN diodes to reduce losses and improve no-load efficiency. Use Value: 0.55 V V_F cuts conduction loss by >40% vs. 1N4007, enabling smaller heatsinks and higher power density.	Use Scenario: Secondary-side synchronous rectification in 45 W USB-C PD charger using active clamp flyback topology. IC Role / Device Role / Timing Role: Freewheeling path during MOSFET off-time; handles bidirectional current in quasi-resonant designs. Use Value: 30 A I_FSM withstands startup surges; 125°C T_J max ensures stability under sustained 15 W output load.
Industrial DC-DC Converters	LED Driver Secondary Rectification
Use Scenario: 12 V input, 3.3 V/2 A isolated buck-boost converter powering PLC I/O modules in factory environments. IC Role / Device Role / Timing Role: Post-regulator rectifier in secondary winding of miniature planar transformer. Use Value: DO-41 package fits tight board spacing; 90°C/W R_θJA allows natural convection cooling without thermal vias.	Use Scenario: Constant-current LED driver with 36 V output driving 10-series white LEDs in streetlight fixtures. IC Role / Device Role / Timing Role: Output rectifier in flyback-derived constant-current topology with 50 kHz switching. Use Value: Guard ring structure prevents failure during lightning-induced line surges; 0.33 g weight eases mechanical stress on PCB.

AC/DC Wall Adapters

USB-C PD Power Modules

Use Scenario: 5–20 W offline adapter converting 90–264 VAC to 5–20 VDC with <100 kHz switching frequency.

IC Role / Device Role / Timing Role: Output rectifier replacing conventional PN diodes to reduce losses and improve no-load efficiency.

Use Value: 0.55 V V_F cuts conduction loss by >40% vs. 1N4007, enabling smaller heatsinks and higher power density.

Use Scenario: Secondary-side synchronous rectification in 45 W USB-C PD charger using active clamp flyback topology.

IC Role / Device Role / Timing Role: Freewheeling path during MOSFET off-time; handles bidirectional current in quasi-resonant designs.

Use Value: 30 A I_FSM withstands startup surges; 125°C T_J max ensures stability under sustained 15 W output load.

Industrial DC-DC Converters

LED Driver Secondary Rectification

Use Scenario: 12 V input, 3.3 V/2 A isolated buck-boost converter powering PLC I/O modules in factory environments.

IC Role / Device Role / Timing Role: Post-regulator rectifier in secondary winding of miniature planar transformer.

Use Value: DO-41 package fits tight board spacing; 90°C/W R_θJA allows natural convection cooling without thermal vias.

Use Scenario: Constant-current LED driver with 36 V output driving 10-series white LEDs in streetlight fixtures.

IC Role / Device Role / Timing Role: Output rectifier in flyback-derived constant-current topology with 50 kHz switching.

Use Value: Guard ring structure prevents failure during lightning-induced line surges; 0.33 g weight eases mechanical stress on PCB.

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-1EWH02-M3/5AT	V_RRM = 20 V, I_F = 1 A, V_F = 0.52 V @ 1 A, but DO-214AC (SMA) surface-mount package	Requires PCB rework for SMT placement; lacks axial DO-41 through-hole compatibility	Select when automated assembly and space-constrained layouts prioritize SMT over manual repairability
ON Semiconductor SB120	V_RRM = 20 V, I_F = 1 A, V_F = 0.54 V @ 1 A, same DO-41 package, but not AEC-Q101 qualified	No automotive qualification; IR = 1 mA @ 125°C (vs. SR102 R0G's 10 mA), indicating tighter leakage control	Select for cost-sensitive industrial adapters where AEC-Q101 is unnecessary and leakage margin is less critical

Compared with VS-1EWH02-M3/5AT and SB120, SR102 R0G uniquely combines DO-41 through-hole compatibility, AEC-Q101 readiness, and 10 mA reverse leakage at 125°C - making it optimal for serviceable, automotive-adjacent, or thermally constrained legacy designs.

Availability

SR102 R0G is available at Aetrix Electronics and suitable for AC/DC adapters, USB-C PD power modules, and industrial DC-DC converters requiring stable component supply, long-term manufacturability, and consistent DO-41 mechanical fit.

Supply support for SR102 R0G 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 protection ICs since 1979.

The SR102 R0G belongs to TSC's SR1xx Schottky rectifier family, engineered for high-efficiency, low-noise secondary-side rectification in compact, thermally constrained power supplies targeting consumer, industrial, and automotive auxiliary systems.

FAQ

What is the maximum junction temperature rating for SR102 R0G?

The SR102 R0G has a maximum junction temperature (T_J) of +125°C, validated per its absolute maximum ratings table. This rating applies under continuous 1 A forward current at 25°C ambient with standard DO-41 mounting on FR-4 PCB. Derating curves in the datasheet show usable current drops to ~0.6 A at 85°C ambient to maintain T_J ≤ 125°C.

Does SR102 R0G meet AEC-Q101 reliability standards?

The SR102 R0G itself is not AEC-Q101 qualified; however, the SR102H variant (same die, AEC-Q101 tested) is available. The "R0G" suffix indicates green compound and tape-and-reel packaging, not qualification status. Engineers requiring automotive-grade assurance must specify SR102H or confirm qualification status via Taiwan Semiconductor's official part number matrix.

What is the reverse leakage current of SR102 R0G at elevated temperature?

At T_J = 100°C and rated V_R = 20 V, the SR102 R0G exhibits a maximum reverse current (I_R) of 10 mA, per electrical specifications. At 125°C, leakage remains within specification limits, supporting stable operation in sealed enclosures or high-ambient industrial environments without thermal runaway risk.

Can SR102 R0G replace a 1N4001 in a linear power supply?

SR102 R0G is not recommended as a direct replacement for 1N4001 in linear supplies due to its lower V_RRM (20 V vs. 50 V) and Schottky-specific reverse leakage behavior. While it offers lower V_F, its 20 V rating limits use to low-voltage secondary circuits only - e.g., post-transformer rectification feeding a 12 V regulator - and requires verification of peak inverse voltage under worst-case line conditions.

What does the "R0G" suffix mean in SR102 R0G?

The "R0G" suffix in SR102 R0G denotes two attributes: "R0" specifies tape-and-reel packaging (5,000 pcs per reel), and "G" indicates halogen-free, green epoxy compound compliant with IEC 61249-2-21. It does not indicate voltage grade, qualification level, or thermal grade - those are encoded separately in the base part number and optional "H" suffix.

SR102 R0G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-204AL, DO-41, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 20 V

Current - Average Rectified (Io):: 1A

Voltage - Forward (Vf) (Max) @ If:: 550 mV @ 1 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 500 µA @ 20 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-204AL (DO-41)

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

SR102 R0G FAQ

1.How can I place an order for SR102 R0G through Aetrix?

Please submit a Request for Quotation (RFQ) for SR102 R0G 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 SR102 R0G reliable?

The price and inventory of SR102 R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR102 R0G is usually 5 days.

3.What payment methods are accepted for SR102 R0G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR102 R0G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SR102 R0G?

SR102 R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SR102 R0G 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 SR102 R0G?

For technical support, including SR102 R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR102 R0G requirements.

6.How does Aetrix verify that SR102 R0G is sourced from the original manufacturer or authorized distributors?

All SR102 R0G 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 SR102 R0G meets industry standards.

7.What is the process for return or replacement of SR102 R0G?

All SR102 R0G units undergo pre-shipment inspection (PSI). If there is an issue with SR102 R0G, 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 SR102 R0G part is unused and in its original packaging.

Return procedure for SR102 R0G:

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…