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Taiwan Semiconductor Corporation BAV20W RHG
- Part No.:
- BAV20W RHG
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123F
- Datasheet:
-
BAV20W RHG.pdf
- Description:
- DIODE GP 250V 200MA SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:5,950
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Product details
Overview
BAV20W RHG from Taiwan Semiconductor is a surface-mount high-voltage switching diode in SOD-123F package, rated for 150 V repetitive peak reverse voltage (VRRM), 410 mW power dissipation, and 200 mA mean forward current (IO), used in DC-DC converter flyback snubbers and low-power AC rectification.
For engineers reviewing the BAV20W RHG datasheet, BAV20W RHG pinout, BAV20W RHG application, or BAV20W RHG equivalent, key selection criteria include reverse recovery time (trr = 4 ns), junction capacitance (CJ = 2 pF at VR = 0 V), thermal resistance (RθJA = 375 °C/W), and halogen-free green compound compliance (suffix "G").
Technical Context
The BAV20W RHG is a silicon planar epitaxial fast-switching diode optimized for high-speed, low-loss operation in compact SMD layouts. Its 4 ns reverse recovery time and 2 pF junction capacitance support efficient switching above 1 MHz in flyback and boost converters.
Designed for surface-mount assembly with matte tin (Sn) over nickel (Ni) plating, it meets MIL-STD-202 Method 208 solderability and withstands 260 °C/10 s reflow. Polarity is marked by a cathode band on the SOD-123F case.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 150 V - Maximum repetitive reverse voltage before breakdown; defines safe operating range in clamp/snubber circuits |
| trr | 4 ns - Measured at IF = IR = 30 mA, RL = 100 Ω, Irr = 3 mA; enables high-frequency switching with minimal switching loss |
| CJ | 2 pF @ VR = 0 V, f = 1 MHz - Low junction capacitance minimizes capacitive loading in RF and fast-switching nodes |
| IO | 200 mA - Continuous forward current rating; supports sustained operation in low-power signal and bias paths |
| RθJA | 375 °C/W - Junction-to-ambient thermal resistance; determines temperature rise under 410 mW dissipation in still air |
| VF | 1.25 V @ IF = 100 mA - Forward voltage drop directly impacts conduction loss in rectifier and clamping applications |
Pinout & Package
SOD-123F flat-lead small-outline plastic package: 2-terminal surface-mount device with cathode band marking; dimensions 2.86 mm × 1.52 mm × 1.15 mm (L × W × H); weight 4.85 ± 0.5 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of circuit; must be routed with adequate copper area for thermal relief |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to higher-potential node in rectifier or clamp; critical for polarity-sensitive layout |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free green compound | Suffix "G" confirms RoHS-compliant, Pb-free molding compound meeting IEC 61249-2-21 requirements |
| Moisture sensitivity level 1 | No floor life limitation; no baking required prior to reflow, simplifying manufacturing flow |
| High-temp soldering guarantee | Rated for 260 °C/10 s reflow profile, compatible with standard lead-free assembly processes |
| Low leakage current | IR ≤ 5 nA @ VR = 150 V (TA = 25 °C); ensures minimal standby power loss in high-impedance bias networks |
Applications
| DC-DC Converter Snubber | Low-Power AC Rectification |
|---|---|
Use Scenario: Placed across MOSFET drain-source in flyback converters to suppress voltage spikes during turn-off. IC Role / Device Role / Timing Role: Fast-recovery clamping diode absorbing inductive energy. Use Value: 4 ns trr and 150 V VRRM limit overshoot to safe levels without slowing switching frequency. | Use Scenario: Half-wave rectification in low-current auxiliary power supplies (<50 mA). IC Role / Device Role / Timing Role: Unidirectional current path converting AC input to pulsating DC. Use Value: 1.25 V VF at 100 mA ensures low conduction loss; SOD-123F footprint saves board space vs. DO-35. |
| Signal-Level Clamping | ESD Protection Interface |
Use Scenario: Voltage clamping on analog sensor inputs to prevent overvoltage damage. IC Role / Device Role / Timing Role: Bidirectional transient suppressor using forward and reverse conduction limits. Use Value: 2 pF CJ avoids signal distortion at frequencies up to 100 MHz; 150 V VRRM sets precise clamping threshold. | Use Scenario: Secondary-level ESD protection on USB or GPIO lines in industrial controllers. IC Role / Device Role / Timing Role: Low-capacitance shunt path diverting ESD pulses to ground. Use Value: 5 nA IR at 150 V ensures negligible leakage in high-impedance data lines; SOD-123F allows placement near connector. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage fast-switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAV21W RHG | Higher VRRM (200 V), identical trr (4 ns), same SOD-123F package and marking code | Preferred where system transients exceed 150 V but layout and thermal constraints match BAV20W RHG | Select BAV21W RHG only if 200 V reverse margin is required; otherwise BAV20W RHG offers optimal cost/performance balance |
| 1N4148W | Lower VRRM (100 V), slightly slower trr (4–6 ns), same SOD-123F package and RoHS compliance | Suitable for general-purpose logic clamping and low-voltage signal routing, not for 150 V snubbers | Use 1N4148W only in sub-100 V circuits; BAV20W RHG is mandatory for 120–150 V rail protection |
Compared with BAV21W RHG and 1N4148W, the BAV20W RHG uniquely balances 150 V reverse standoff, 4 ns recovery, and SOD-123F manufacturability-making it the optimal choice for mid-voltage flyback snubbers and compact AC rectifiers where 100 V is insufficient and 200 V is excessive.
Availability
BAV20W RHG is available at Aetrix Electronics and suitable for DC-DC converter snubbers, low-power AC rectification, signal-level clamping, and ESD protection interfaces requiring stable component supply and halogen-free compliance.
Supply support for BAV20W RHG 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 is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global industrial, computing, and consumer markets since 1979.
The BAV19W/BAV20W/BAV21W series targets high-reliability, high-speed switching applications in space-constrained SMD designs, emphasizing fast recovery, low leakage, and robust reflow compatibility.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for BAV20W RHG?
The BAV20W RHG has a VRRM rating of 150 V, verified per DS_S1501003 (Version E15). This value defines the highest continuous reverse voltage the diode can block without breakdown under normal operating conditions, making it suitable for 120 VAC-derived rails and flyback snubbers where transient spikes approach 150 V. Exceeding this rating risks irreversible avalanche failure.
Does BAV20W RHG meet RoHS and halogen-free requirements?
Yes, the BAV20W RHG is RoHS compliant and uses a halogen-free green compound, confirmed by the "G" suffix in its part number and documented in DS_S1501003. The matte tin (Sn) lead finish over nickel (Ni) underplate ensures lead-free solderability, and moisture sensitivity level 1 eliminates bake requirements before reflow-critical for high-yield manufacturing.
What is the reverse recovery time (trr) of BAV20W RHG and how is it measured?
The BAV20W RHG has a typical reverse recovery time (trr) of 4 ns, measured under the condition: IF = IR = 30 mA, RL = 100 Ω, and Irr = 3 mA (per Note 3 in DS_S1501003). This fast recovery enables efficient operation in switching power supplies above 500 kHz, minimizing switching losses and reducing EMI generation compared to slower general-purpose diodes.
Can BAV20W RHG replace BAV19W RHG in existing designs?
BAV20W RHG can replace BAV19W RHG only if the circuit requires ≥150 V reverse standoff-BAV19W RHG is rated for 100 V VRRM. Both share identical SOD-123F packaging, pinout, and thermal characteristics, but substituting BAV20W RHG into a 100 V design adds unnecessary voltage margin without performance penalty. Always verify layout clearance and transient profiles before substitution.
What is the junction-to-ambient thermal resistance (RθJA) of BAV20W RHG?
The BAV20W RHG has an RθJA of 375 °C/W, specified for the SOD-123F package on standard FR-4 PCB with minimum copper pad. This means a 410 mW power dissipation causes a ~154 °C junction-to-ambient temperature rise in still air. For reliable operation, ambient temperature must remain below +25 °C or PCB copper area increased to reduce thermal resistance.
BAV20W RHG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 250 V
- Current - Average Rectified (Io):
- 200mA
- Voltage - Forward (Vf) (Max) @ If:
- 1.25 V @ 200 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 100 nA @ 250 V
- Capacitance @ Vr, F:
- 5pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
- Operating Temperature - Junction:
- -65°C ~ 150°C
BAV20W RHG FAQ
1.How can I place an order for BAV20W RHG through Aetrix?
Please submit a Request for Quotation (RFQ) for BAV20W RHG 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 BAV20W RHG reliable?
The price and inventory of BAV20W RHG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAV20W RHG is usually 5 days.
3.What payment methods are accepted for BAV20W RHG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAV20W RHG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAV20W RHG?
BAV20W RHG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAV20W RHG 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 BAV20W RHG?
For technical support, including BAV20W RHG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAV20W RHG requirements.
6.How does Aetrix verify that BAV20W RHG is sourced from the original manufacturer or authorized distributors?
All BAV20W RHG 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 BAV20W RHG meets industry standards.
7.What is the process for return or replacement of BAV20W RHG?
All BAV20W RHG units undergo pre-shipment inspection (PSI). If there is an issue with BAV20W RHG, 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 BAV20W RHG part is unused and in its original packaging.
Return procedure for BAV20W RHG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAV20W RHG Tags
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