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Vishay General Semiconductor - Diodes Division BY299P-E3/73
- Part No.:
- BY299P-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
BY299P-E3/73.pdf
- Description:
- DIODE GEN PURP 800V 2A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:7,708
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Product details
Overview
BY299P-E3/73 from Vishay General Semiconductor is a soft recovery plastic rectifier diode rated for 800 V repetitive peak reverse voltage, 2.0 A average forward current, and 70 A non-repetitive surge current, with 500 ns reverse recovery time and 1.3 V forward voltage at 3.0 A - used in high-efficiency AC/DC converters and freewheeling paths in telecom power supplies.
For engineers reviewing the BY299P-E3/73 datasheet, BY299P-E3/73 pinout, BY299P-E3/73 application, or BY299P-E3/73 equivalent, key selection criteria include its DO-201AD package, soft recovery behavior for reduced EMI, 125 °C max junction temperature, and RoHS-compliant matte tin-plated leads suitable for J-STD-002 soldering.
Technical Context
This device operates as a unidirectional silicon rectifier optimized for fast switching with soft reverse recovery characteristics to minimize ringing and electromagnetic interference in high-frequency power conversion stages. Its 500 ns trr and low 10 μA leakage at 25 °C support stable operation in continuous conduction mode (CCM) flyback and forward converter secondary-side rectification.
The DO-201AD package provides mechanical robustness and thermal performance with 15 °C/W typical junction-to-ambient thermal resistance at 0.375" lead length. Designed for commercial-grade applications, it is not AEC-Q101 qualified and excludes automotive use per manufacturer note.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - maximum repetitive reverse blocking capability without breakdown |
| IF(AV) | 2.0 A - average forward current rating at 55 °C ambient with 0.375" lead length |
| IFSM | 70 A - peak surge current handling for 8.3 ms half-sine transient events |
| trr | 500 ns - measured reverse recovery time under IF = IR = 10 mA, Irr = 1.0 mA |
| VF | 1.3 V - forward voltage drop at 3.0 A DC, directly impacting conduction loss |
| IR | 10 μA - maximum DC reverse leakage at rated VDC and 25 °C, critical for standby efficiency |
| TJ max. | 125 °C - maximum allowable junction temperature defining thermal derating envelope |
Pinout & Package
Package: DO-201AD molded epoxy case with matte tin-plated leads; polarity indicated by cathode band; UL 94 V-0 flammability rating; 1.0" (25.4 mm) minimum lead length; 0.375" (9.5 mm) standard test condition for thermal ratings.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of rectified path; must withstand full surge current |
| Cathode | Forward current exit / reverse blocking terminal | Marked by color band; carries output voltage reference and absorbs reverse leakage |
Key Features
| Feature | Design Value |
|---|---|
| Soft recovery profile | Reduces voltage overshoot and EMI during turn-off, enabling cleaner switching in SMPS |
| Low VF (1.3 V @ 3 A) | Lowers conduction losses by ~15% vs. comparable 1N5408-class diodes at same current |
| High IFSM (70 A) | Withstands inrush and fault transients in offline AC-DC front ends without failure |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker test and EU directives 2002/95/EC and 2002/96/EC |
Applications
| AC/DC Adapter Secondary Rectification | Telecom DC-DC Converter Freewheeling |
|---|---|
Use Scenario: Rectifying 100–240 VAC input after transformer secondary in compact wall adapters. IC Role / Device Role / Timing Role: Power rectifier converting AC to pulsating DC before filtering. Use Value: Soft recovery minimizes RFI emissions, meeting CISPR-22 Class B limits without added snubbers. | Use Scenario: Freewheeling path in isolated 48 V to 12 V telecom buck-derived converters. IC Role / Device Role / Timing Role: Clamp inductive energy during switch-off in synchronous rectifier auxiliary windings. Use Value: 500 ns trr ensures clean commutation with minimal voltage spike on primary-side MOSFETs. |
| Inverter Output Stage Snubber Diode | Industrial UPS Battery Charging Circuit |
Use Scenario: Bidirectional snubber network in three-phase motor drive inverters. IC Role / Device Role / Timing Role: Clamping diode absorbing reactive energy during IGBT turn-off transitions. Use Value: 800 V VRRM supports 600 V bus systems with 20% safety margin against transients. | Use Scenario: Input rectification stage in 3 kW industrial UPS battery charger modules. IC Role / Device Role / Timing Role: Main AC line rectifier feeding boost PFC stage. Use Value: 2.0 A IF(AV) and 70 A IFSM sustain continuous charging load plus surge during grid reconnection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2R08 | Same DO-201AD package, 800 V VRRM, but faster trr = 150 ns and higher VF = 1.7 V | Better for high-frequency (>100 kHz) topologies where speed dominates loss trade-off | Choose STTH2R08 when minimizing switching loss outweighs conduction loss penalty |
| 1N5408G | Lower VRRM = 1000 V but slower trr = 2000 ns, higher VF = 1.2 V at 3 A, same IF(AV) = 3.0 A | Suitable for 50/60 Hz linear supplies; lacks soft recovery and EMI control | Choose 1N5408G only for low-frequency, cost-sensitive designs without EMI constraints |
Compared with STTH2R08 and 1N5408G, BY299P-E3/73 delivers balanced performance: softer recovery than 1N5408G for reduced noise, lower VF than STTH2R08 for better efficiency at moderate frequencies (20–60 kHz), and proven reliability in telecom-grade power modules.
Availability
BY299P-E3/73 is available at Aetrix Electronics and suitable for AC/DC adapters, telecom DC-DC converters, and industrial UPS battery charging circuits requiring stable component supply and RoHS-compliant manufacturing.
Supply support for BY299P-E3/73 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
Vishay Intertechnology is a global semiconductor manufacturer specializing in discrete components, sensors, and passive elements with emphasis on reliability, precision, and power efficiency.
BY299P-E3/73 belongs to Vishay's General Semiconductor soft recovery rectifier family, engineered for high-efficiency, low-EMI power conversion in commercial-grade consumer and telecom infrastructure equipment.
FAQ
What is the maximum junction temperature rating for BY299P-E3/73?
The BY299P-E3/73 has a maximum operating junction temperature of +125 °C. This rating defines the upper thermal limit for reliable long-term operation and must be respected in PCB layout and heatsinking design. Derating curves in the datasheet show that average forward current drops to zero at 175 °C ambient, confirming the 125 °C TJ limit as absolute maximum.
Is BY299P-E3/73 suitable for automotive applications?
No, BY299P-E3/73 is not suitable for automotive applications. The Vishay datasheet explicitly states "These devices are not AEC-Q101 qualified." It is rated for commercial-grade use only, with storage temperature up to +150 °C but no qualification for automotive environmental stress testing, vibration, or extended temperature cycling requirements.
What does the "E3/73" suffix indicate in BY299P-E3/73?
The "E3" suffix denotes RoHS compliance and JESD 201 Class 1A whisker resistance; "73" specifies ammo pack packaging with 1000 units per pack. This matches Vishay's ordering information table, where "73" corresponds to 1000-unit ammo packaging - distinct from "54" (13" tape-and-reel, 1400 units). Both share identical electrical and thermal specifications.
How does the soft recovery characteristic of BY299P-E3/73 reduce EMI?
BY299P-E3/73 exhibits soft reverse recovery, meaning its current decay during turn-off is gradual rather than abrupt. This avoids sharp di/dt-induced voltage spikes across stray inductance, directly lowering broadband conducted and radiated EMI. Measured trr of 500 ns reflects this controlled transition, making it preferable over hard-recovery diodes in switch-mode power supplies targeting EMC compliance.
What is the thermal resistance from junction to ambient for BY299P-E3/73?
The typical thermal resistance from junction to ambient (RθJA) for BY299P-E3/73 is 15 °C/W, measured with 0.375" (9.5 mm) lead length and both leads equally heat-sinked. This value assumes standard PCB mounting conditions and is used to calculate junction temperature rise: TJ = TA + (Pdiss × RθJA). Actual RθJA will vary with PCB copper area and airflow.
BY299P-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 800 V
- Current - Average Rectified (Io):
- 2A
- 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:
- 10 µA @ 800 V
- Capacitance @ Vr, F:
- 28pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -50°C ~ 125°C
BY299P-E3/73 FAQ
1.How can I place an order for BY299P-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BY299P-E3/73 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 BY299P-E3/73 reliable?
The price and inventory of BY299P-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BY299P-E3/73 is usually 5 days.
3.What payment methods are accepted for BY299P-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BY299P-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BY299P-E3/73?
BY299P-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BY299P-E3/73 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 BY299P-E3/73?
For technical support, including BY299P-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BY299P-E3/73 requirements.
6.How does Aetrix verify that BY299P-E3/73 is sourced from the original manufacturer or authorized distributors?
All BY299P-E3/73 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 BY299P-E3/73 meets industry standards.
7.What is the process for return or replacement of BY299P-E3/73?
All BY299P-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BY299P-E3/73, 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 BY299P-E3/73 part is unused and in its original packaging.
Return procedure for BY299P-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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