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

Taiwan Semiconductor Corporation BYG20D

Name: BYG20D
Brand: Taiwan Semiconductor Corporation
SKU: BYG20D
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BYG20D

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AC, SMA

Datasheet:: BYG20D.pdf

Description:: DIODE GEN PURP 200V 1.5A DO214AC

Quantity:: RFQ Add To RFQ list

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Inventory:14,905

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Product details

Overview

BYG20D from Taiwan Semiconductor is a 1.5A, 200V repetitive peak reverse voltage (V_RRM) surface-mount fast recovery rectifier in DO-214AC (SMA) package, featuring 75ns reverse recovery time (t_rr), 1.4V max forward voltage at 1.5A, and 30A peak surge current capability - used in DC-DC converter freewheeling paths and snubber networks.

For engineers reviewing the BYG20D datasheet, BYG20D pinout, BYG20D application, or BYG20D equivalent, key selection criteria include V_RRM = 200V, t_rr ≤ 75ns, I_F = 1.5A continuous, thermal resistance R_θJA = 100°C/W on standard PCB, and DO-214AC polarity marking via cathode band.

Technical Context

The BYG20D employs a glass-passivated silicon junction for stable high-voltage blocking and fast switching performance. Its single-die construction and DO-214AC package support automated placement and reflow soldering per J-STD-002, with moisture sensitivity level 1 compliance ensuring robust handling in SMT lines.

Designed for high-efficiency power conversion, it delivers low conduction loss (V_F ≤ 1.4V @ 1.5A) and controlled reverse recovery (t_rr = 75ns typ.) to minimize switching losses in 50–500kHz SMPS topologies. Junction temperature range spans −55°C to +150°C, enabling operation in thermally constrained industrial environments.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum repetitive reverse voltage the device blocks without breakdown; defines minimum system isolation margin in DC-DC output rectification.
I_F	1.5 A - Continuous average forward current rating at T_A = 25°C; derates linearly above 25°C per forward current derating curve.
t_rr	75 ns - Measured reverse recovery time under IF = 0.5A, IR = 1.0A, Irr = 0.25A; critical for minimizing switching loss in high-frequency converters.
V_F @ 1.5A	≤1.4 V - Max forward voltage drop at rated current and 25°C; directly impacts conduction loss and thermal rise in freewheeling diodes.
I_FSM	30 A - Non-repetitive peak surge current (8.3ms half-sine); supports inrush and fault-current handling in power supply startup and overload conditions.
R_θJA	100 °C/W - Junction-to-ambient thermal resistance on 5mm × 5mm Cu pad PCB; determines required heatsinking or airflow for thermal management.

Pinout & Package

DO-214AC (SMA) surface-mount package with molded epoxy case (UL 94V-0), matte tin-plated leads, and cathode polarity indicated by a visible band on the body. Weight: 0.064 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node (e.g., switch node in buck converter); must withstand full load current and surge transients.
Cathode	Forward current exit / reverse blocking terminal	Connected to output rail or snubber capacitor; marked by band; carries full output voltage during off-state with <1 µA leakage at 25°C.

Key Features

Feature	Design Value
Glass passivated junction	Enables stable 200V blocking and long-term reliability under humidity and thermal cycling per J-STD-020 Level 1.
Fast recovery (75ns)	Reduces switching loss and EMI generation in 100–300kHz SMPS designs compared to standard rectifiers (>500ns).
High surge capability (30A)	Withstands repeated inrush events in AC-DC front-ends and motor drive freewheeling without degradation.
RoHS & halogen-free	Complies with IEC 61249-2-21 and EU RoHS directives; suitable for consumer and industrial products requiring green manufacturing.

Applications

DC-DC Converter Output Rectification	Snubber Network Diode
Use Scenario: Used as secondary-side rectifier in isolated flyback or forward converters delivering 5–24V outputs at up to 1.5A. IC Role / Device Role / Timing Role: Freewheeling diode conducting during transformer reset phase; blocks reverse voltage during primary switch-on. Use Value: Low V_F (≤1.4V) minimizes conduction loss; 75ns t_rr limits voltage overshoot and ringing during turn-off.	Use Scenario: Placed across MOSFETs or IGBTs in clamp-type snubbers to absorb inductive switching energy. IC Role / Device Role / Timing Role: Fast-turn-on diode clamping voltage spike during switch turn-off; conducts transient energy into RC network. Use Value: 30A I_FSM handles high-energy pulses; 200V V_RRM matches typical 12–48V bus clamping requirements.
Lighting Driver Freewheeling	Switching Inverter Auxiliary Rectification
Use Scenario: Freewheeling path in LED driver boost or buck-boost stages powering 12–36V LED strings. IC Role / Device Role / Timing Role: Provides current continuity when main switch opens; recovers rapidly to prevent cross-conduction in synchronous designs. Use Value: DO-214AC footprint enables compact layout; 150°C T_JMAX supports sealed luminaire thermal environments.	Use Scenario: Auxiliary rectifier in three-phase inverter gate-drive power supplies or auxiliary bias rails. IC Role / Device Role / Timing Role: Converts high-frequency transformer output to stable low-voltage DC for control ICs and optocouplers. Use Value: 1.5A I_F supports multi-rail bias delivery; glass passivation ensures long life under partial discharge stress.

DC-DC Converter Output Rectification

Snubber Network Diode

Use Scenario: Used as secondary-side rectifier in isolated flyback or forward converters delivering 5–24V outputs at up to 1.5A.

IC Role / Device Role / Timing Role: Freewheeling diode conducting during transformer reset phase; blocks reverse voltage during primary switch-on.

Use Value: Low V_F (≤1.4V) minimizes conduction loss; 75ns t_rr limits voltage overshoot and ringing during turn-off.

Use Scenario: Placed across MOSFETs or IGBTs in clamp-type snubbers to absorb inductive switching energy.

IC Role / Device Role / Timing Role: Fast-turn-on diode clamping voltage spike during switch turn-off; conducts transient energy into RC network.

Use Value: 30A I_FSM handles high-energy pulses; 200V V_RRM matches typical 12–48V bus clamping requirements.

Lighting Driver Freewheeling

Switching Inverter Auxiliary Rectification

Use Scenario: Freewheeling path in LED driver boost or buck-boost stages powering 12–36V LED strings.

IC Role / Device Role / Timing Role: Provides current continuity when main switch opens; recovers rapidly to prevent cross-conduction in synchronous designs.

Use Value: DO-214AC footprint enables compact layout; 150°C T_JMAX supports sealed luminaire thermal environments.

Use Scenario: Auxiliary rectifier in three-phase inverter gate-drive power supplies or auxiliary bias rails.

IC Role / Device Role / Timing Role: Converts high-frequency transformer output to stable low-voltage DC for control ICs and optocouplers.

Use Value: 1.5A I_F supports multi-rail bias delivery; glass passivation ensures long life under partial discharge stress.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1L06U	V_RRM = 600V, t_rr = 65ns, I_F = 1A, DO-214AC	Higher voltage rating but lower current; better for 400V+ bus snubbers where 200V is insufficient	Select when system reverse voltage exceeds 200V but space and thermal budget constrain use of larger packages.
ES1D	V_RRM = 200V, t_rr = 35ns, I_F = 1A, DO-214AC	Faster recovery but lower surge rating (I_FSM = 25A) and no specified JESD 201 whisker test	Prefer for ultra-high-frequency (<1MHz) converters where t_rr dominates loss, accepting reduced ruggedness.

Compared with STTH1L06U and ES1D, the BYG20D uniquely balances 200V rating, 1.5A current, 30A surge, and 75ns recovery in a standard DO-214AC footprint - making it optimal for cost-sensitive, thermally constrained 12–48V industrial DC-DC and lighting applications requiring proven field reliability.

Availability

BYG20D is available at Aetrix Electronics and suitable for DC-DC converters, snubber networks, LED lighting drivers, and switching inverter auxiliary power supplies requiring stable component supply, consistent parametric performance, and full traceability.

Supply support for BYG20D 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 diodes, and MOSFETs for industrial and consumer markets.

The BYG20x series was developed specifically for high-efficiency, surface-mount switching power supplies - emphasizing fast recovery, robust surge handling, and automated assembly compatibility in cost-sensitive power conversion systems.

FAQ

What is the maximum junction temperature rating for the BYG20D?

The BYG20D has a maximum junction temperature (T_JMAX) of +150°C and a minimum of −55°C. This wide operating range allows reliable use in enclosed industrial enclosures and automotive under-hood auxiliary circuits where ambient temperatures exceed 85°C. Derating curves in the datasheet define safe I_F limits above 25°C ambient.

Does the BYG20D meet RoHS and halogen-free requirements?

Yes, the BYG20D is RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound contains no brominated flame retardants or chlorine-based additives, and lead content is below 1000 ppm. This makes BYG20D suitable for export to EU, Japan, and other regulated markets requiring green material declarations.

What is the reverse recovery time (t_rr) specification for the BYG20D?

The BYG20D has a typical reverse recovery time (t_rr) of 75 ns under test conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. This value is confirmed in the Electrical Specifications table and is critical for minimizing switching losses in 100–500 kHz power converters where diode turn-off behavior directly affects efficiency and EMI.

Is the BYG20D suitable for automated SMT assembly?

Yes, the BYG20D is optimized for automated placement and reflow soldering. It features matte tin-plated leads compliant with J-STD-002, moisture sensitivity level 1 (per J-STD-020), and a DO-214AC (SMA) outline compatible with standard pick-and-place feeders and stencil apertures. No dry-pack or baking is required prior to assembly.

What does the "D" suffix in BYG20D indicate?

The "D" suffix in BYG20D specifies the 200V repetitive peak reverse voltage (V_RRM) rating. Within the BYG20x family, "D" = 200V, "G" = 400V, and "J" = 600V. All variants share identical package (DO-214AC), current rating (1.5A), thermal specs, and mechanical dimensions - only V_RRM and associated reverse leakage differ.

BYG20D 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):: 200 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 @ 200 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

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

BYG20D FAQ

1.How can I place an order for BYG20D through Aetrix?

Please submit a Request for Quotation (RFQ) for BYG20D 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 BYG20D reliable?

The price and inventory of BYG20D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BYG20D is usually 5 days.

3.What payment methods are accepted for BYG20D?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BYG20D transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BYG20D?

BYG20D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BYG20D 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 BYG20D?

For technical support, including BYG20D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BYG20D requirements.

6.How does Aetrix verify that BYG20D is sourced from the original manufacturer or authorized distributors?

All BYG20D 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 BYG20D meets industry standards.

7.What is the process for return or replacement of BYG20D?

All BYG20D units undergo pre-shipment inspection (PSI). If there is an issue with BYG20D, 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 BYG20D part is unused and in its original packaging.

Return procedure for BYG20D:

1.Submit a request within 90 days.

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

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