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Taiwan Semiconductor Corporation RS3KB-T R5G
- Part No.:
- RS3KB-T R5G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
RS3KB-T R5G.pdf
- Description:
- DIODE GEN PURP 800V 3A DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:1,834
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Product details
Overview
RS3KB-T from Taiwan Semiconductor is a 3A, 800V fast recovery surface-mount rectifier in DO-214AA (SMB) package, featuring 1.13V forward voltage at 3.0A/25°C, 500ns reverse recovery time, and 150°C maximum junction temperature. It serves as a primary output rectifier in high-efficiency DC-DC converters.
For engineers reviewing the RS3KB-T datasheet, RS3KB-T pinout, RS3KB-T application, or RS3KB-T equivalent, key selection criteria include VRRM=800V, IFSM=80A (8.3ms), RθJA=78°C/W on 10mm×10mm PCB pad, low IR (≤5µA @25°C), and SMB package compatibility with automated SMT assembly.
Technical Context
This single-die fast recovery rectifier uses glass-passivated junction technology to achieve stable reverse leakage (<5µA at 25°C) and robust thermal performance (RθJL=20°C/W). Its 500ns trr enables operation in switching-mode power supplies up to several hundred kHz.
The device operates across -55°C to +150°C junction range, with moisture sensitivity level 1 (J-STD-020) and matte tin-plated leads compliant with J-STD-002 solderability. Polarity is marked by cathode band on the SMB body.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Maximum repetitive peak reverse voltage; defines safe blocking capability in high-voltage DC-DC outputs |
| IF | 3 A continuous - Rated average forward current; supports sustained 3A load in thermally managed layouts |
| IFSM (8.3ms) | 80 A - Non-repetitive surge rating; withstands inrush currents during power-up or fault transients |
| VF @ 3A/25°C | 1.13 V max - Forward conduction loss; determines ~3.4W dissipation at full load under ambient conditions |
| trr | 500 ns - Reverse recovery time; limits switching losses and EMI in 100–500 kHz SMPS designs |
| TJ max | +150 °C - Maximum junction temperature; enables operation in sealed industrial enclosures without active cooling |
| IR @ VRRM/25°C | 5 µA max - Reverse leakage current; ensures minimal standby power loss in high-impedance bias networks |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, single-anode/single-cathode configuration. Cathode indicated by molded band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (lead 1) | Forward current entry point | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node) |
| Cathode (lead 2) | Forward current exit / reverse blocking terminal | Connected to output rail; polarity band identifies this terminal for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures long-term reliability and stable IR under thermal cycling and humidity exposure |
| Moisture sensitivity level 1 | Eliminates bake requirement prior to reflow; compatible with standard SMT line handling |
| RoHS and halogen-free compliance | Meets IEC 61249-2-21 and EU RoHS directives for environmentally constrained applications |
| UL 94V-0 molding compound | Provides flame-retardant encapsulation required for industrial and ITE safety certifications |
| JESD 201 Class 1 whisker resistance | Prevents tin whisker growth on matte tin leads, ensuring long-term solder joint integrity |
Applications
| AC-DC Adapter Output Rectification | Industrial DC-DC Converter Primary Side |
|---|---|
Use Scenario: 24V/3A isolated flyback output stage in wall-mounted AC-DC adapters. IC Role / Device Role / Timing Role: Output rectifier converting high-frequency transformer secondary AC to regulated DC. Use Value: Low VF (1.13V) minimizes conduction loss; SMB footprint allows compact layout with adequate copper pour for thermal management. | Use Scenario: Input rectification in 48V-input industrial DC-DC modules powering PLC I/O cards. IC Role / Device Role / Timing Role: High-voltage input bridge leg rectifying 48V DC bus after EMI filter and before buck converter stage. Use Value: 800V VRRM provides 2× derating margin over 48V bus with transient spikes; 80A IFSM handles cold-start surges. |
| Solar Microinverter DC Link | Telecom Power Supply Secondary Side |
Use Scenario: DC link rectification between MPPT stage and H-bridge in residential solar microinverters. IC Role / Device Role / Timing Role: Fast-recovery rectifier in unidirectional DC link path managing bidirectional energy flow. Use Value: 500ns trr reduces switching losses during high-frequency (100–250 kHz) PWM commutation; 150°C TJ rating supports operation near heat-generating power stages. | Use Scenario: Secondary-side synchronous rectifier replacement in 12V/3A telecom brick supplies. IC Role / Device Role / Timing Role: Discrete rectifier used where synchronous control complexity is avoided. Use Value: 3A IF rating matches typical telecom output loads; SMB package fits legacy board footprints designed for similar diodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3R08S | VRRM=800V, IF=3A, trr=500ns, same DO-214AA package, VF=1.15V @3A/25°C | Higher VF increases conduction loss by ~0.02V; identical thermal specs and surge rating | Preferred when STMicroelectronics supply chain alignment is required |
| ES3KB | VRRM=800V, IF=3A, trr=500ns, DO-214AA, VF=1.10V @3A/25°C, IR=10µA max @25°C | Lower VF improves efficiency; higher IR may affect ultra-low-power standby performance | Selected for marginal efficiency gains where leakage is not critical |
Compared with RS3KB-T, STTH3R08S offers identical voltage/current/speed specs but slightly higher VF, while ES3KB delivers lower conduction loss at the cost of doubled reverse leakage-both require no PCB redesign due to DO-214AA footprint compatibility.
Availability
RS3KB-T is available at Aetrix Electronics and suitable for DC-DC converters, switching mode inverters, and general-purpose power rectification requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.
Supply support for RS3KB-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 industrial, computing, and consumer markets since 1979.
The RS3x series is part of TSC's high-reliability surface-mount rectifier product line, engineered specifically for high-efficiency, high-voltage switching power supplies where thermal stability and surge robustness are critical.
FAQ
What is the maximum junction temperature rating for RS3KB-T?
The RS3KB-T has a maximum junction temperature (TJ max) of +150°C, allowing reliable operation in thermally constrained environments such as sealed industrial enclosures or high-density power modules. This rating is validated per absolute maximum ratings table in the official Taiwan Semiconductor datasheet version C2102. Derating curves confirm usable current capacity down to 1.5A at 125°C ambient with standard PCB copper area.
Does RS3KB-T support automated SMT placement?
Yes, RS3KB-T is explicitly designed for automated placement, as confirmed in its features list. The DO-214AA (SMB) package, matte tin-plated leads, and moisture sensitivity level 1 (per J-STD-020) ensure compatibility with standard pick-and-place equipment and reflow profiles without pre-bake. The device's 0.090g weight and symmetrical lead geometry further enhance placement yield.
What is the reverse recovery time (trr) specification for RS3KB-T?
The RS3KB-T has a reverse recovery time (trr) of 500 ns, measured at IF = 0.5A, IR = 1.0A, and Irr = 0.25A, per the electrical specifications table in the Taiwan Semiconductor datasheet. This value applies across the full operating temperature range and supports switching frequencies up to 500 kHz in well-designed power stages with controlled dv/dt.
Is RS3KB-T halogen-free and RoHS compliant?
Yes, RS3KB-T is both RoHS compliant and halogen-free in accordance with IEC 61249-2-21, as stated in the FEATURES section of the official datasheet. The molding compound contains no brominated flame retardants or chlorine-based additives, and all homogeneous materials meet EU Directive 2011/65/EU requirements for restricted substances.
What packaging option is available for RS3KB-T?
RS3KB-T is supplied in tape-and-reel packaging with 3,000 units per reel, as specified in the ORDERING INFORMATION section. The DO-214AA (SMB) package is compatible with standard SMT feeders, and the reel meets EIA-481-D standards for sprocket hole pitch and cover tape tension. No bulk or ammo-pack options are listed in the official documentation.
RS3KB-T R5G 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):
- 800 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):
- 500 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 800 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
RS3KB-T R5G FAQ
1.How can I place an order for RS3KB-T R5G through Aetrix?
Please submit a Request for Quotation (RFQ) for RS3KB-T R5G 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 RS3KB-T R5G reliable?
The price and inventory of RS3KB-T R5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS3KB-T R5G is usually 5 days.
3.What payment methods are accepted for RS3KB-T R5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS3KB-T R5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS3KB-T R5G?
RS3KB-T R5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS3KB-T R5G 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 RS3KB-T R5G?
For technical support, including RS3KB-T R5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS3KB-T R5G requirements.
6.How does Aetrix verify that RS3KB-T R5G is sourced from the original manufacturer or authorized distributors?
All RS3KB-T R5G 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 RS3KB-T R5G meets industry standards.
7.What is the process for return or replacement of RS3KB-T R5G?
All RS3KB-T R5G units undergo pre-shipment inspection (PSI). If there is an issue with RS3KB-T R5G, 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 RS3KB-T R5G part is unused and in its original packaging.
Return procedure for RS3KB-T R5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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