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

Taiwan Semiconductor Corporation RS3GB-T

Name: RS3GB-T
Brand: Taiwan Semiconductor Corporation
SKU: RS3GB-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: RS3GB-T

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AA, SMB

Datasheet:: RS3GB-T.pdf

Description:: DIODE GEN PURP 400V 3A DO214AA

Quantity:: RFQ Add To RFQ list

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Product details

Overview

RS3GB-T from Taiwan Semiconductor is a 400 V, 3 A fast recovery surface-mount rectifier in DO-214AA (SMB) package, featuring 150 ns reverse recovery time, 1.02 V forward voltage at 3.0 A/25°C, and 80 A surge current capability; used in switching-mode power supplies and DC-DC converters.

For engineers reviewing the RS3GB-T datasheet, RS3GB-T pinout, RS3GB-T application, or RS3GB-T equivalent, key selection criteria include repetitive peak reverse voltage (400 V), thermal resistance (R_θJL = 20 °C/W), low leakage (<5 µA @ 25°C), and compatibility with automated SMT placement on standard PCB pads.

Technical Context

This device is a single-die, glass-passivated silicon junction rectifier optimized for high-frequency switching operation. Its fast recovery (trr ≤ 150 ns) and low forward voltage enable efficient power conversion in compact, thermally constrained designs.

The DO-214AA (SMB) package supports JEDEC-compliant reflow profiles, features matte tin-plated leads per J-STD-002, and delivers R_θJA = 78 °C/W on a 10 mm × 10 mm Cu pad - critical for thermal management in high-density layouts.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - Maximum repetitive reverse blocking voltage; defines safe operating range in flyback and boost topologies.
I_F	3 A continuous - Rated average forward current; determines steady-state power handling without derating.
t_rr	≤150 ns - Reverse recovery time; limits switching losses and EMI generation in >100 kHz converters.
V_F @ 3.0 A, 25°C	1.02 V - Forward voltage drop; directly impacts conduction loss and thermal load at full rated current.
I_FSM (8.3 ms)	80 A - Non-repetitive surge current; enables robustness against line transients and startup inrush.
R_θJL	20 °C/W - Junction-to-lead thermal resistance; allows accurate thermal modeling when mounted to copper pour or heatsink.

Pinout & Package

DO-214AA (SMB) surface-mount package with cathode-indicated band; molded UL 94V-0 compound, matte tin-plated leads, and polarity marked per industry standard.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side of AC input or switch node; requires adequate trace width for 3 A RMS.
Cathode	Forward current exit / reverse blocking terminal	Marked by band; ties to output rail or positive bus; must maintain clearance from adjacent high-dV/dt nodes.

Key Features

Feature	Design Value
Glass passivated chip junction	Enhances long-term reliability under humidity and thermal cycling; eliminates need for conformal coating in industrial environments.
Moisture sensitivity level 1	Enables direct use from dry pack without baking; reduces manufacturing overhead in high-volume SMT lines.
Low reverse leakage (≤5 µA @ 25°C)	Minimizes standby power loss in offline adapters and improves efficiency at light loads.
J-STD-002 solderable leads	Guarantees consistent wetting and joint integrity across lead-free reflow profiles (e.g., SAC305).

Applications

AC-DC Power Adapters	DC-DC Buck Converters
Use Scenario: Secondary-side rectification in 12–24 V output wall adapters with 50–100 kHz switching frequency. IC Role / Device Role / Timing Role: Output rectifier diode converting transformer secondary AC to regulated DC. Use Value: 150 ns trr and 1.02 V V_F reduce switching and conduction losses, enabling >88% efficiency at full load.	Use Scenario: Freewheeling path in synchronous or non-synchronous buck regulators powering FPGAs or microcontrollers. IC Role / Device Role / Timing Role: Freewheeling diode providing current continuity during high-side MOSFET off-time. Use Value: Low R_θJL (20 °C/W) and 3 A rating support stable operation under 100% duty-cycle transient loads.
Switching Inverters	Industrial Motor Drives
Use Scenario: DC bus clamping and regeneration path in single-phase inverters for HVAC blowers or pumps. IC Role / Device Role / Timing Role: Fast recovery clamp diode absorbing inductive kickback energy during IGBT turn-off. Use Value: 80 A I_FSM withstands short-circuit events; 400 V V_RRM covers 300 V DC bus with safety margin.	Use Scenario: Auxiliary power supply rectification in variable-frequency drives feeding control logic and gate drivers. IC Role / Device Role / Timing Role: Input rectifier converting 24 V AC control power to isolated 15 V DC. Use Value: RoHS/halogen-free compliance meets industrial safety standards; SMB footprint fits tight board space constraints.

AC-DC Power Adapters

DC-DC Buck Converters

Use Scenario: Secondary-side rectification in 12–24 V output wall adapters with 50–100 kHz switching frequency.

IC Role / Device Role / Timing Role: Output rectifier diode converting transformer secondary AC to regulated DC.

Use Value: 150 ns trr and 1.02 V V_F reduce switching and conduction losses, enabling >88% efficiency at full load.

Use Scenario: Freewheeling path in synchronous or non-synchronous buck regulators powering FPGAs or microcontrollers.

IC Role / Device Role / Timing Role: Freewheeling diode providing current continuity during high-side MOSFET off-time.

Use Value: Low R_θJL (20 °C/W) and 3 A rating support stable operation under 100% duty-cycle transient loads.

Switching Inverters

Industrial Motor Drives

Use Scenario: DC bus clamping and regeneration path in single-phase inverters for HVAC blowers or pumps.

IC Role / Device Role / Timing Role: Fast recovery clamp diode absorbing inductive kickback energy during IGBT turn-off.

Use Value: 80 A I_FSM withstands short-circuit events; 400 V V_RRM covers 300 V DC bus with safety margin.

Use Scenario: Auxiliary power supply rectification in variable-frequency drives feeding control logic and gate drivers.

IC Role / Device Role / Timing Role: Input rectifier converting 24 V AC control power to isolated 15 V DC.

Use Value: RoHS/halogen-free compliance meets industrial safety standards; SMB footprint fits tight board space constraints.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH3L04S	400 V, 3 A, trr = 120 ns, VF = 0.95 V @ 3 A, DO-214AA	Slightly faster recovery and lower VF; tighter V_F distribution	Preferred where <120 ns trr or <0.98 V V_F is required for ultra-high-efficiency designs.
ES3D-E3/57T	200 V, 3 A, trr = 35 ns, VF = 0.92 V @ 3 A, DO-214AA	Lower V_RRM; optimized for low-voltage, high-speed switching	Only suitable for ≤200 V circuits; not interchangeable in 400 V applications like offline SMPS.

Compared with STTH3L04S and ES3D-E3/57T, the RS3GB-T offers balanced performance at 400 V with proven thermal robustness (R_θJL = 20 °C/W) and J-STD-020 Level 1 moisture handling - ideal for cost-sensitive industrial power supplies requiring field reliability.

Availability

RS3GB-T is available at Aetrix Electronics and suitable for AC-DC adapters, DC-DC converters, and motor drive auxiliary supplies requiring stable component supply, long-lifecycle availability, and RoHS/halogen-free compliance.

Supply support for RS3GB-T 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 and protection markets since 1979.

The RS3x series targets high-reliability, cost-optimized rectification in industrial and consumer power systems, emphasizing thermal stability, automated assembly compatibility, and stringent environmental compliance.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for RS3GB-T?

The RS3GB-T has a V_RRM of 400 V, verified per TSC C2102 datasheet Absolute Maximum Ratings table. This rating ensures reliable blocking capability in 300 V DC bus applications with sufficient safety margin. Exceeding 400 V may cause avalanche breakdown or premature failure. The RS3GB-T must not be substituted with lower-V_RRM variants like RS3DB-T (200 V) in 400 V designs.

What is the forward voltage (V_F) of RS3GB-T at 3.0 A and 25°C?

The RS3GB-T exhibits a typical forward voltage of 1.02 V at 3.0 A and 25°C, with a maximum of 1.30 V under the same conditions, per TSC C2102 Electrical Specifications. This value directly determines conduction loss (P_cond = I_F × V_F) and junction temperature rise. At 125°C, V_F drops to 0.87 V typical, improving efficiency under thermal stress.

Does RS3GB-T have a specified reverse recovery time (t_rr)?

Yes, RS3GB-T has a maximum reverse recovery time of 150 ns, measured at I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A, per TSC C2102 Electrical Specifications. This t_rr enables efficient operation in switching power supplies up to ~200 kHz. It is slower than RS3DB-T (also 150 ns) but faster than RS3JB-T (250 ns), confirming its mid-range speed positioning in the RS3x family.

What package type does RS3GB-T use, and is it compatible with standard SMT processes?

RS3GB-T uses the DO-214AA (SMB) package, confirmed in Mechanical Data and Ordering Information sections of the TSC C2102 datasheet. It features matte tin-plated leads compliant with J-STD-002, moisture sensitivity level 1 (J-STD-020), and is qualified for lead-free reflow. The SMB footprint is widely supported in stencil design and pick-and-place libraries.

Is RS3GB-T RoHS and halogen-free compliant?

Yes, RS3GB-T is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the FEATURES section of the TSC C2102 datasheet. The molding compound meets UL 94V-0 flammability rating, and the device carries no exemptions under current RoHS directives. This compliance applies to all RS3x-T variants including RS3GB-T.

RS3GB-T Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AA, SMB

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 400 V

Current - Average Rectified (Io):: 3A

Voltage - Forward (Vf) (Max) @ If:: 1.3 V @ 3 A

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

Reverse Recovery Time (trr):: 150 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 400 V

Capacitance @ Vr, F:: 50pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

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

RS3GB-T FAQ

1.How can I place an order for RS3GB-T through Aetrix?

Please submit a Request for Quotation (RFQ) for RS3GB-T 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 RS3GB-T reliable?

The price and inventory of RS3GB-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS3GB-T is usually 5 days.

3.What payment methods are accepted for RS3GB-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS3GB-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for RS3GB-T?

RS3GB-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your RS3GB-T 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 RS3GB-T?

For technical support, including RS3GB-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS3GB-T requirements.

6.How does Aetrix verify that RS3GB-T is sourced from the original manufacturer or authorized distributors?

All RS3GB-T 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 RS3GB-T meets industry standards.

7.What is the process for return or replacement of RS3GB-T?

All RS3GB-T units undergo pre-shipment inspection (PSI). If there is an issue with RS3GB-T, 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 RS3GB-T part is unused and in its original packaging.

Return procedure for RS3GB-T:

1.Submit a request within 90 days.

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

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