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STMicroelectronics BYW98-200RL
- Part No.:
- BYW98-200RL
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
BYW98-200RL.pdf
- Description:
- DIODE GEN PURP 200V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:4,853
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Product details
Overview
BYW98-200RL from STMicroelectronics is a high-efficiency fast recovery rectifier diode in DO-201AD package, rated for 200 V repetitive peak reverse voltage, 3 A average forward current at 75°C, and ultra-fast 35 ns reverse recovery time (trr), optimized for switching-mode power supplies and transistor base drive circuits.
For engineers reviewing the BYW98-200RL datasheet, BYW98-200RL pinout, BYW98-200RL application, or BYW98-200RL equivalent, key selection criteria include low conduction loss (VF ≤ 0.85 V @ 3 A, 100°C), negligible switching losses, thermal resistance of 25 °C/W (on infinite heatsink), and robust surge capability (70 A IFSM).
Technical Context
This diode employs a planar epitaxial silicon structure with optimized carrier lifetime control to achieve fast soft recovery-critical for minimizing EMI and voltage overshoot in high-frequency switching converters. Its low Qrr (15 nC) and tfr (20 ns) support efficient operation in flyback, forward, and snubberless topologies.
The device operates up to 150°C junction temperature and features a white band cathode marking on the DO-201AD case. Thermal performance is defined with 10 mm lead length and infinite heatsink conditions, and its VF exhibits strong negative temperature coefficient-dropping from 1.2 V @ 25°C to 0.78–0.85 V @ 100°C at 3 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Withstands 200 V repetitive reverse voltage without breakdown, enabling use in 100–120 VAC input SMPS front ends. |
| IF(AV) | 3 A @ Ta = 75°C, δ = 0.5 - Sustains continuous 3 A average forward current under standard duty-cycle thermal conditions. |
| trr | 35 ns max @ IF = 1 A, dIF/dt = −50 A/µs, VR = 30 V - Enables >1 MHz switching frequency with minimal reverse recovery loss. |
| VF | 0.85 V max @ IF = 3 A, Tj = 100°C - Low forward drop reduces conduction loss and improves efficiency in high-current, thermally constrained designs. |
| Qrr | 15 nC @ IF = 3 A, dIF/dt = −20 A/µs, VR ≤ 30 V - Low stored charge minimizes turn-off switching loss and EMI generation. |
| Rth(j-a) | 25 °C/W - Junction-to-ambient thermal resistance on infinite heatsink with 10 mm leads; defines baseline thermal design margin. |
| IFSM | 70 A @ tp = 10 ms sinusoidal - Handles short-term inrush and fault currents in AC/DC input stages and motor drive freewheeling paths. |
Pinout & Package
DO-201AD axial-leaded package with cathode indicated by white band; leads are tinned copper, 1.30 mm diameter, 25.4 mm overall length, and 9.5 mm body length. Designed for through-hole mounting and wave soldering (max 230°C for 10 s at 4 mm from case).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry point | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node return path). |
| Cathode (white band end) | Forward current exit / reverse blocking terminal | Connected to output rail or positive bus; polarity marking ensures correct orientation in high-reliability rectifier bridges. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast recovery | 35 ns trr enables high-frequency (>500 kHz) operation with reduced switching loss and EMI. |
| Low forward voltage | 0.85 V max at 3 A/100°C lowers conduction loss and thermal stress in compact power stages. |
| Soft recovery characteristic | Controlled dI/dt-dependent trr and low Qrr minimize voltage spikes and ringing during turn-off. |
| High surge rating | 70 A non-repetitive surge withstand supports inrush current handling in offline SMPS and industrial controls. |
| UL94 V-0 epoxy encapsulation | Flame-retardant package meets safety standards for enclosed power supply and appliance applications. |
Applications
| Switch-Mode Power Supply Output Rectification | Transistor Base Drive Clamping |
|---|---|
Use Scenario: Secondary-side rectification in 20–100 W offline flyback or forward converters operating at 65–130 kHz. IC Role / Device Role / Timing Role: Fast-recovery rectifier providing low-loss DC output conversion with minimal reverse recovery noise. Use Value: 35 ns trr and 15 nC Qrr reduce switching loss by ~30% vs. standard recovery diodes, improving efficiency and easing EMI filtering. | Use Scenario: Clamp diode across BJT or MOSFET base-emitter/base-gate terminals to suppress saturation-induced storage delay. IC Role / Device Role / Timing Role: Fast-turn-off clamp preventing deep saturation and enabling rapid transistor turn-off in linear drivers and PWM amplifiers. Use Value: 20 ns tfr and soft recovery prevent voltage overshoot and ensure predictable base current removal timing. |
| Freewheeling Diode in DC Motor Drives | Snubberless Flyback Snubbing |
Use Scenario: Freewheeling path for brushed DC motors in automotive HVAC actuators and industrial positioning systems. IC Role / Device Role / Timing Role: Energy recirculation diode absorbing inductive kickback during PWM switching cycles. Use Value: 70 A IFSM handles peak motor stall currents; 150°C Tj rating ensures reliability under sustained load and ambient heat. | Use Scenario: Integrated snubbing in low-component-count flyback converters where external RC snubbers are omitted. IC Role / Device Role / Timing Role: Controlled reverse recovery limits voltage spike amplitude and duration across primary switch. Use Value: Predictable 35 ns trr and low VFP (5 V) enable stable clamping without oscillation, reducing component count and board space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2R02 | 2 A IF(AV), 200 V VRRM, 30 ns trr, TO-220AC package | Higher thermal mass but requires heatsink; not axial-leaded | Preferred when higher average current derating or forced-air cooling is available. |
| ES1D-E3/54 | 3 A IF(AV), 200 V VRRM, 35 ns trr, DO-214AC (SMA) surface-mount package | Surface-mount footprint; lower thermal resistance in PCB layout but no axial lead flexibility | Select for automated assembly and space-constrained PCBs where reflow compatibility is required. |
Compared with BYW98-200RL, STTH2R02 offers better thermal handling in high-power discrete mounts, while ES1D-E3/54 provides identical electrical specs in a modern SMT form-making the choice dependent on mechanical integration, thermal management strategy, and manufacturing process requirements.
Availability
BYW98-200RL is available at Aetrix Electronics and suitable for switching-mode power supplies, transistor base drive circuits, and DC motor freewheeling applications requiring stable component supply, long-lifecycle availability, and consistent parametric performance.
Supply support for BYW98-200RL 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.
BYW98-200RL belongs to ST's high-voltage fast recovery diode product line, engineered specifically for high-efficiency, high-frequency power conversion where low Qrr, soft recovery, and thermal robustness are critical.
FAQ
What is the maximum junction temperature and how does it affect reliability?
The BYW98-200RL has a maximum operating junction temperature of 150°C. Operating consistently near this limit accelerates parametric drift and reduces long-term reliability; derating to ≤125°C junction temperature extends lifetime and maintains stable VF and trr performance across environmental stress.
Can BYW98-200RL replace standard recovery diodes like 1N4007 in SMPS designs?
No-1N4007 has trr > 2 µs and high Qrr, causing excessive switching loss and EMI in SMPS. BYW98-200RL's 35 ns trr and 15 nC Qrr make it functionally incompatible with slow-recovery replacements; substitution requires full circuit re-evaluation of snubbing, gate drive, and thermal design.
Is the DO-201AD package compatible with automated through-hole insertion equipment?
Yes-the DO-201AD package meets IPC-7351 standards for axial-leaded components, with 25.4 mm lead spacing and 1.30 mm lead diameter. Its 9.5 mm body length and defined lead bend zone (≥15 mm axial length) support reliable placement and wave soldering in high-volume manufacturing.
How does forward voltage vary with temperature and current?
VF decreases with rising junction temperature: 1.2 V @ 25°C drops to 0.78–0.85 V @ 100°C at 3 A. At fixed temperature, VF rises sublinearly with current-e.g., ~0.95 V @ 5 A, 25°C-enabling accurate conduction loss modeling using the provided P = 0.75×IF(AV) + 0.04×IF²(RMS) equation.
BYW98-200RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 9 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 200 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- 150°C (Max)
BYW98-200RL FAQ
1.How can I place an order for BYW98-200RL through Aetrix?
Please submit a Request for Quotation (RFQ) for BYW98-200RL 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 BYW98-200RL reliable?
The price and inventory of BYW98-200RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BYW98-200RL is usually 5 days.
3.What payment methods are accepted for BYW98-200RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BYW98-200RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BYW98-200RL?
BYW98-200RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BYW98-200RL 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 BYW98-200RL?
For technical support, including BYW98-200RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BYW98-200RL requirements.
6.How does Aetrix verify that BYW98-200RL is sourced from the original manufacturer or authorized distributors?
All BYW98-200RL 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 BYW98-200RL meets industry standards.
7.What is the process for return or replacement of BYW98-200RL?
All BYW98-200RL units undergo pre-shipment inspection (PSI). If there is an issue with BYW98-200RL, 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 BYW98-200RL part is unused and in its original packaging.
Return procedure for BYW98-200RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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