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Taiwan Semiconductor Corporation BYG20G
- Part No.:
- BYG20G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
BYG20G.pdf
- Description:
- DIODE GEN PURP 400V 1.5A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:12,699
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Product details
Overview
BYG20G from Taiwan Semiconductor is a 1.5A, 400V repetitive peak reverse voltage (VRRM) high-efficiency surface-mount silicon rectifier diode in DO-214AC (SMA) package, featuring 75 ns reverse recovery time (trr), 1.4 V forward voltage at 1.5 A, and 30 A non-repetitive surge current capability - used in DC-DC converters and snubber circuits.
For engineers reviewing the BYG20G datasheet, BYG20G pinout, BYG20G application, or BYG20G equivalent, key selection criteria include its 400 V VRRM rating, fast trr performance for switching efficiency, thermal resistance (RθJA = 100 °C/W), RoHS/halogen-free compliance, and suitability for automated SMT placement in power conversion designs.
Technical Context
The BYG20G is a single-die, glass-passivated junction silicon rectifier optimized for high-frequency switching applications. Its 75 ns reverse recovery time enables reduced switching losses in SMPS topologies, while its 1.4 V VF at 1.5 A and 30 A IFSM support robust conduction and transient handling.
Thermally, it delivers RθJL = 25 °C/W to lead and RθJA = 100 °C/W on a 5 mm × 5 mm Cu pad PCB - enabling reliable operation up to TJ = 150 °C. Polarity is marked by a cathode band, and moisture sensitivity is rated J-STD-020 Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - maximum repetitive reverse blocking voltage; defines safe operating range in flyback/snubber circuits |
| IF | 1.5 A continuous - average forward current rating at TA = 25°C; derates linearly above 25°C per curve Fig.1 |
| trr | 75 ns - measured at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables efficient high-frequency rectification |
| VF @ 1.5A | 1.4 V - forward voltage drop at rated current; directly impacts conduction loss and thermal design |
| IFSM | 30 A - peak non-repetitive surge current (8.3 ms half-sine); supports inrush and fault-current resilience |
| TJ max | 150 °C - maximum junction temperature; sets thermal margin for PCB layout and heatsinking |
| RθJA | 100 °C/W - junction-to-ambient thermal resistance on standard 5 mm × 5 mm Cu pad; critical for power dissipation modeling |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, single-anode/single-cathode configuration with cathode polarity indicated by molded band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of circuit (e.g., switch node in buck converter) |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to output rail or energy storage node (e.g., output capacitor in flyback) |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability and humidity resistance without hermetic sealing |
| Fast reverse recovery (75 ns) | Reduces switching losses and EMI in 50–500 kHz SMPS designs |
| J-STD-020 Level 1 moisture sensitivity | Enables direct placement without baking; simplifies SMT line integration |
| RoHS & halogen-free compliance | Meets IEC 61249-2-21 and EU RoHS directives for green electronics manufacturing |
| Matte tin-plated leads | Ensures solderability per J-STD-002 and whisker resistance per JESD 201 Class 2 |
Applications
| DC-DC Converters | Switching Inverters |
|---|---|
Use Scenario: Secondary-side rectification in isolated buck-derived topologies (e.g., forward, flyback). IC Role / Device Role / Timing Role: High-speed unidirectional current path with low conduction loss and minimal reverse recovery tail. Use Value: 1.4 V VF at 1.5 A and 75 ns trr reduce power loss and improve efficiency over standard rectifiers. | Use Scenario: Freewheeling path in H-bridge motor drives and solar microinverters. IC Role / Device Role / Timing Role: Clamp inductive kickback and sustain current during PWM off-time. Use Value: 30 A IFSM withstands motor startup surges; 400 V VRRM covers typical 300 VDC bus applications. |
| Snubber Circuits | LED Driver Power Supplies |
Use Scenario: RC/RCD snubber networks across MOSFETs or IGBTs in SMPS. IC Role / Device Role / Timing Role: Fast, low-capacitance clamp to absorb turn-off energy and suppress voltage spikes. Use Value: 75 ns trr ensures rapid turn-off; <1 µA IR at 25°C minimizes leakage-induced snubber loss. | Use Scenario: Primary-side rectification in constant-current LED drivers for street lighting. IC Role / Device Role / Timing Role: Input AC/DC bridge leg or secondary-side output rectifier under PWM dimming. Use Value: 150 °C TJ max and RθJA = 100 °C/W support compact, thermally constrained LED housing designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L06 | VRRM = 600 V, trr = 65 ns, VF = 1.3 V @ 1 A - slightly faster but higher voltage grade | Better suited for 400–600 V bus systems; may require layout review for voltage clearance | Select when higher VRRM margin or tighter trr tolerance is required; not pin-compatible due to different package (DO-214AA) |
| MBR1545CT | 45 V VRRM, dual Schottky, VF ≈ 0.55 V - lower VF but much lower voltage rating | Only viable in low-voltage DC-DC outputs (<30 V); unsuitable for 400 V input rectification | Choose only for secondary-side low-VF needs; incompatible for BYG20G's primary-side 400 V role |
Compared with STTH1L06 and MBR1545CT, the BYG20G uniquely balances 400 V blocking, 75 ns speed, and SMA package compatibility for cost-sensitive, medium-voltage SMT rectification - neither alternative matches its exact VRRM/trr/package triad.
Availability
BYG20G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and LED driver power supplies requiring stable component supply and J-STD-020 Level 1 moisture-safe SMT integration.
Supply support for BYG20G 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, automotive, and industrial markets since 1979.
The BYG20G belongs to TSC's high-efficiency rectifier family designed specifically for high-frequency switching power supplies - emphasizing fast recovery, thermal robustness, and automated assembly readiness.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for BYG20G?
The BYG20G has a VRRM rating of 400 V, meaning it can reliably block up to 400 V in reverse bias under repetitive conditions. This value is specified in the Absolute Maximum Ratings table and distinguishes BYG20G from BYG20D (200 V) and BYG20J (600 V) in the same family. Designers must ensure system peak reverse voltage stays below this limit with appropriate safety margin.
What is the forward voltage (VF) of BYG20G at its rated current?
The BYG20G exhibits a maximum forward voltage of 1.4 V at 1.5 A and 25°C junction temperature, per the Electrical Specifications table. This VF value directly determines conduction loss and thermal load in continuous operation. At elevated temperatures or lower currents (e.g., 1.0 A), VF drops to ≤1.3 V, supporting efficiency optimization across operating conditions.
Is BYG20G suitable for automated SMT assembly?
Yes, BYG20G is explicitly designed for automated placement: it carries J-STD-020 Level 1 moisture sensitivity, matte tin-plated leads compliant with J-STD-002, and a DO-214AC (SMA) package optimized for pick-and-place accuracy. No pre-baking is required, and its 0.064 g weight ensures stable feeding and placement yield in high-volume SMT lines.
What is the reverse recovery time (trr) specification for BYG20G?
The BYG20G has a typical reverse recovery time of 75 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A per the Electrical Specifications table. This fast trr enables efficient operation in 100–300 kHz switching converters, reducing switching losses and associated EMI compared to general-purpose rectifiers with trr > 200 ns.
Does BYG20G meet RoHS and halogen-free requirements?
Yes, BYG20G is RoHS compliant and halogen-free per IEC 61249-2-21. The device uses green molding compound and lead-free matte tin plating, satisfying environmental regulations for consumer, industrial, and telecom equipment. These attributes are confirmed in the Features section and supported by TSC's material declarations.
BYG20G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 V
- Current - Average Rectified (Io):
- 1.5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.4 V @ 1.5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 75 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 400 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
BYG20G FAQ
1.How can I place an order for BYG20G through Aetrix?
Please submit a Request for Quotation (RFQ) for BYG20G 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 BYG20G reliable?
The price and inventory of BYG20G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BYG20G is usually 5 days.
3.What payment methods are accepted for BYG20G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BYG20G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BYG20G?
BYG20G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BYG20G 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 BYG20G?
For technical support, including BYG20G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BYG20G requirements.
6.How does Aetrix verify that BYG20G is sourced from the original manufacturer or authorized distributors?
All BYG20G 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 BYG20G meets industry standards.
7.What is the process for return or replacement of BYG20G?
All BYG20G units undergo pre-shipment inspection (PSI). If there is an issue with BYG20G, 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 BYG20G part is unused and in its original packaging.
Return procedure for BYG20G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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