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

Taiwan Semiconductor Corporation HS1A R3G

Name: HS1A R3G
Brand: Taiwan Semiconductor Corporation
SKU: HS1A R3G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HS1A R3G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AC, SMA

Datasheet:: HS1A R3G.pdf

Description:: DIODE GEN PURP 50V 1A DO214AC

Quantity:: RFQ Add To RFQ list

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Inventory:7,905

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Product details

Overview

HS1A R3G from Taiwan Semiconductor is a 1 A, 50 V repetitive peak reverse voltage (V_RRM) surface-mount silicon rectifier diode in DO-214AC (SMA) package, featuring 1.0 V max forward voltage at 1 A, 30 A peak surge current, and 50 ns reverse recovery time - optimized for DC/DC converters and snubber circuits.

For engineers reviewing the HS1A R3G datasheet, HS1A R3G pinout, HS1A R3G application, or HS1A R3G equivalent, key selection criteria include its 50 V V_RRM, 1 A continuous forward current rating, fast 50 ns recovery, glass-passivated junction, and RoHS/halogen-free compliance for high-efficiency switching power supplies.

Technical Context

This single-die, unidirectional silicon rectifier uses a glass-passivated PN junction to achieve stable thermal performance (R_θJL = 15 °C/W) and moisture resistance (J-STD-020 Level 1). Its fast recovery (50 ns) and low forward voltage support high-frequency operation in switching-mode power supplies.

The device operates across –55 °C to +150 °C junction temperature range, with 5 µA max reverse leakage at 25 °C and 150 µA at 125 °C, and exhibits 20 pF junction capacitance at 1 MHz and 4 V reverse bias - enabling predictable behavior in snubber and freewheeling topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	50 V - maximum non-repetitive reverse voltage the diode blocks without breakdown
I_F	1 A continuous - rated average forward current under specified thermal conditions
V_F (max)	1.0 V at I_F = 1 A, T_J = 25 °C - low conduction loss critical for efficiency in compact DC/DC stages
I_FSM	30 A (8.3 ms half-sine) - surge capability for inrush and transient protection
t_rr	50 ns - fast recovery enables high-frequency switching (>100 kHz) with minimal switching loss
C_J	20 pF at 1 MHz, V_R = 4 V - low junction capacitance reduces capacitive coupling in high-speed snubbers
T_J max	+150 °C - supports operation in thermally constrained industrial and automotive environments

Pinout & Package

DO-214AC (SMA) surface-mount package with cathode indicated by a band on the molded body; leads are matte tin-plated and solderable per J-STD-002. Weight: 0.060 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side of circuit; must handle full 1 A continuous and 30 A surge
Cathode	Forward current exit / reverse blocking terminal	Banded end; sustains up to 50 V reverse bias; defines polarity in PCB layout and assembly

Key Features

Feature	Design Value
Glass-passivated junction	Enhances reliability and long-term stability under thermal cycling and humidity exposure
Fast 50 ns reverse recovery	Reduces switching losses and EMI generation in high-frequency SMPS designs
Moisture sensitivity level 1	Eliminates bake requirements before reflow, supporting standard automated SMT assembly
RoHS and halogen-free compliance	Meets global environmental regulations and enables use in green electronics manufacturing
UL 94V-0 molding compound	Provides flame-retardant housing essential for safety-critical power applications

Applications

DC/DC Converters	Snubber Circuits
Use Scenario: Secondary-side rectification in isolated flyback or forward converters operating at 100–500 kHz. IC Role / Device Role / Timing Role: Unidirectional current steering and energy transfer during switch off-time. Use Value: 1.0 V V_F minimizes conduction loss; 50 ns t_rr prevents reverse recovery ringing and improves efficiency.	Use Scenario: Clamp voltage spikes across MOSFETs or IGBTs in motor drives and inverters. IC Role / Device Role / Timing Role: Fast turn-on to absorb inductive kickback energy before voltage exceeds safe limits. Use Value: Low C_J (20 pF) and fast t_rr (50 ns) enable precise, low-loss clamping without parasitic oscillation.
Freewheeling Diodes	Lighting Drivers (LED)
Use Scenario: Providing current path for inductive loads (e.g., solenoids, relays) during de-energization. IC Role / Device Role / Timing Role: Conducting stored inductor energy back into the supply or ground loop. Use Value: 30 A I_FSM withstands high-energy transients; 150 °C T_J max ensures robustness in sealed enclosures.	Use Scenario: Constant-current regulation and overvoltage protection in AC/DC LED drivers. IC Role / Device Role / Timing Role: Rectifying input AC and providing freewheeling path in buck-derived topologies. Use Value: Glass passivation and halogen-free construction meet lighting industry safety and longevity requirements.

DC/DC Converters

Snubber Circuits

Use Scenario: Secondary-side rectification in isolated flyback or forward converters operating at 100–500 kHz.

IC Role / Device Role / Timing Role: Unidirectional current steering and energy transfer during switch off-time.

Use Value: 1.0 V V_F minimizes conduction loss; 50 ns t_rr prevents reverse recovery ringing and improves efficiency.

Use Scenario: Clamp voltage spikes across MOSFETs or IGBTs in motor drives and inverters.

IC Role / Device Role / Timing Role: Fast turn-on to absorb inductive kickback energy before voltage exceeds safe limits.

Use Value: Low C_J (20 pF) and fast t_rr (50 ns) enable precise, low-loss clamping without parasitic oscillation.

Freewheeling Diodes

Lighting Drivers (LED)

Use Scenario: Providing current path for inductive loads (e.g., solenoids, relays) during de-energization.

IC Role / Device Role / Timing Role: Conducting stored inductor energy back into the supply or ground loop.

Use Value: 30 A I_FSM withstands high-energy transients; 150 °C T_J max ensures robustness in sealed enclosures.

Use Scenario: Constant-current regulation and overvoltage protection in AC/DC LED drivers.

IC Role / Device Role / Timing Role: Rectifying input AC and providing freewheeling path in buck-derived topologies.

Use Value: Glass passivation and halogen-free construction meet lighting industry safety and longevity requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MUR105	Same DO-214AC package; 50 V V_RRM, 1 A I_F, but 75 ns t_rr and 1.15 V V_F (max)	Slightly higher conduction and switching loss; less suitable for >300 kHz designs	Acceptable where cost is prioritized over ultra-fast recovery and lowest V_F
Vishay VS-1EWH05	DO-214AC; 50 V V_RRM, 1 A I_F, 1.05 V V_F (max), 60 ns t_rr; AEC-Q200 qualified	Automotive-grade qualification adds test rigor but increases cost and lead time	Preferred for automotive lighting or under-hood power modules requiring extended reliability validation

Compared with MUR105 and VS-1EWH05, the HS1A R3G delivers the lowest forward voltage (1.0 V) and fastest recovery (50 ns) in its voltage class, making it optimal for space-constrained, high-frequency DC/DC converters where thermal and efficiency margins are tight.

Availability

HS1A R3G is available at Aetrix Electronics and suitable for DC/DC converters, snubber circuits, and LED lighting drivers requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.

Supply support for HS1A R3G 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 rectifiers, TVS diodes, MOSFETs, and power ICs.

The HS1A R3G belongs to TSC's HS1x high-efficiency surface-mount rectifier family, designed specifically for high-frequency switching power supplies demanding low V_F, fast t_rr, and robust thermal performance in compact SMA packages.

FAQ

What is the maximum junction temperature rating for HS1A R3G?

The HS1A R3G has a maximum junction temperature (T_J) of +150 °C, allowing reliable operation in thermally demanding environments such as enclosed LED drivers or industrial DC/DC modules. This rating is validated under standard PCB mounting conditions (5 mm × 5 mm Cu pad), and derating curves in the datasheet guide thermal design for sustained 1 A load.

Does HS1A R3G have a cathode marking, and how is polarity identified?

Yes, HS1A R3G uses a visible cathode band on the molded DO-214AC (SMA) body to indicate polarity. The banded end is the cathode terminal, and the opposite end is the anode. This marking aligns with JEDEC DO-214AC standards and ensures correct orientation during automated placement and manual inspection.

What is the reverse leakage current specification for HS1A R3G at elevated temperatures?

HS1A R3G specifies 5 µA maximum reverse leakage current (I_R) at 25 °C and rated V_R, rising to 50 µA at 100 °C and 150 µA at 125 °C. These values reflect typical silicon diode behavior and are critical for low-power standby modes where leakage directly impacts system quiescent current.

Is HS1A R3G suitable for use in automotive lighting applications?

HS1A R3G meets RoHS and halogen-free requirements and operates from –55 °C to +150 °C, making it technically viable for non-safety-critical automotive lighting drivers. However, it is not AEC-Q200 qualified; for certified automotive use, consider alternatives like Vishay VS-1EWH05 that carry formal qualification.

What packaging format is available for HS1A R3G, and what is the reel quantity?

HS1A R3G is supplied in tape-and-reel packaging per the ordering code HS1A, with 7,500 units per reel. This format supports high-volume SMT assembly and is compatible with standard pick-and-place equipment calibrated for DO-214AC (SMA) components.

HS1A R3G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AC, SMA

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 50 V

Current - Average Rectified (Io):: 1A

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

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

Reverse Recovery Time (trr):: 50 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 50 V

Capacitance @ Vr, F:: 20pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AC (SMA)

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

HS1A R3G FAQ

1.How can I place an order for HS1A R3G through Aetrix?

Please submit a Request for Quotation (RFQ) for HS1A R3G 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 HS1A R3G reliable?

The price and inventory of HS1A R3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS1A R3G is usually 5 days.

3.What payment methods are accepted for HS1A R3G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS1A R3G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HS1A R3G?

HS1A R3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HS1A R3G 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 HS1A R3G?

For technical support, including HS1A R3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS1A R3G requirements.

6.How does Aetrix verify that HS1A R3G is sourced from the original manufacturer or authorized distributors?

All HS1A R3G 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 HS1A R3G meets industry standards.

7.What is the process for return or replacement of HS1A R3G?

All HS1A R3G units undergo pre-shipment inspection (PSI). If there is an issue with HS1A R3G, 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 HS1A R3G part is unused and in its original packaging.

Return procedure for HS1A R3G:

1.Submit a request within 90 days.

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

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