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Vishay General Semiconductor - Diodes Division BY500-400-E3/73
- Part No.:
- BY500-400-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
BY500-400-E3/73.pdf
- Description:
- DIODE GEN PURP 400V 5A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:8,018
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Product details
Overview
BY500-400-E3/73 from Vishay General Semiconductor is a soft recovery fast switching plastic rectifier diode rated for 400 V repetitive peak reverse voltage, 5.0 A average forward current, and 200 ns reverse recovery time-designed for medium-frequency rectification in switching mode power supplies and freewheeling applications.
For engineers reviewing the BY500-400-E3/73 datasheet, BY500-400-E3/73 pinout, BY500-400-E3/73 application, or BY500-400-E3/73 equivalent, key selection criteria include its DO-201AD package, 1.35 V forward voltage at 5.0 A, 10 μA reverse leakage at 25 °C, and suitability for low-RF-interference circuits requiring soft recovery characteristics.
Technical Context
This device is a single-die, axial-leaded silicon rectifier optimized for soft recovery to minimize ringing and EMI in high-frequency switching circuits. Its 200 ns trr and low junction capacitance (28 pF) support stable operation in SMPS and inverter freewheeling paths.
It operates across -50 °C to +125 °C junction temperature range with 22 °C/W thermal resistance (junction-to-ambient, PCB-mounted), and features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - maximum repetitive reverse blocking capability without breakdown |
| IF(AV) | 5.0 A - continuous forward current rating at 45 °C lead temperature with 0.375" lead length |
| trr | 200 ns - soft recovery time enabling low EMI in switching node snubbing |
| VF | 1.35 V - forward voltage drop at 5.0 A, directly impacting conduction loss and thermal design |
| IR | 10 μA - reverse leakage at 25 °C and rated DC blocking voltage, critical for standby efficiency |
| CJ | 28 pF - junction capacitance at 4.0 V / 1 MHz, influencing high-frequency switching behavior |
Pinout & Package
Package: DO-201AD molded epoxy case with UL 94 V-0 flammability rating; axial leads, cathode indicated by color band; RoHS-compliant (E3 suffix), JESD 201 Class 1A whisker tested.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of rectified path; must handle 200 A surge during transient events |
| Cathode | Forward current exit point | Marked by color band; connects to output rail or freewheeling path; defines polarity in bridge or clamp configurations |
Key Features
| Feature | Design Value |
|---|---|
| Soft recovery profile | Minimizes voltage overshoot and RF noise during turn-off, reducing need for external snubbers in SMPS designs |
| Low forward voltage (1.35 V) | Reduces conduction losses at 5.0 A, lowering thermal stress on heatsink and PCB copper area requirements |
| High surge capability (200 A IFSM) | Withstands inrush and fault currents in motor drives and converter startup without degradation |
| DO-201AD mechanical robustness | Supports automated insertion and wave soldering up to 275 °C for 10 s, per JESD 22-B106 |
Applications
| Switching Mode Power Supply Rectification | Inverter Freewheeling Diode |
|---|---|
Use Scenario: AC/DC front-end or DC/DC secondary-side rectification in 20–100 kHz SMPS topologies. IC Role / Device Role / Timing Role: Unidirectional current steering and energy transfer during switch off-time. Use Value: Soft recovery limits dv/dt-induced EMI, while 5.0 A rating supports >100 W output designs with minimal thermal derating. | Use Scenario: Clamping inductive kickback in three-phase motor inverters and UPS H-bridge outputs. IC Role / Device Role / Timing Role: Provides low-loss return path for stored inductor energy during PWM dead-time. Use Value: 200 ns trr ensures clean commutation without shoot-through risk; 400 V VRRM covers typical 300 V bus systems. |
| Ultrasonic Generator Power Stage | Speed-Controlled DC Motor Drive |
Use Scenario: High-frequency (>20 kHz) half-wave rectification in ultrasonic cleaning and welding power amplifiers. IC Role / Device Role / Timing Role: Converts resonant tank AC output to unidirectional bias for transducer excitation. Use Value: 28 pF CJ and soft recovery prevent parasitic resonance distortion at 40–100 kHz operating frequencies. | Use Scenario: Regenerative braking and flyback protection in brushed DC motor controllers with PWM speed control. IC Role / Device Role / Timing Role: Conducts back-EMF current during MOSFET off-periods to maintain torque continuity. Use Value: 200 A IFSM withstands motor stall surges; 10 μA IR preserves battery life in low-power idle states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH5L06 | 600 V VRRM, 5 A IF(AV), 75 ns trr, TO-220AC package | Higher voltage rating and faster recovery, but larger footprint and higher cost | Preferred where higher blocking voltage or tighter timing control is required; not drop-in due to package mismatch |
| UF5408 | 1000 V VRRM, 3 A IF(AV), 75 ns trr, DO-201AD package | Higher voltage, lower current, faster recovery, same outline | Valid alternative if 400 V margin is excessive and 3 A suffices; shares mounting and layout compatibility |
Compared with STTH5L06 and UF5408, the BY500-400-E3/73 offers optimal balance of 400 V blocking, 5 A current, soft recovery, and DO-201AD form factor-making it preferred for cost-sensitive, medium-voltage SMPS and freewheeling where EMI control is prioritized over raw speed.
Availability
BY500-400-E3/73 is available at Aetrix Electronics and suitable for switching mode power supplies, inverter freewheeling circuits, and ultrasonic generator power stages requiring stable component supply and consistent RoHS-compliant manufacturing.
Supply support for BY500-400-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 manufacturer of discrete semiconductors and passive components, serving industrial, automotive, computing, and consumer markets with high-reliability, application-optimized devices.
The BY500 series belongs to Vishay's general-purpose fast rectifier product line, engineered specifically for medium-frequency switching applications demanding soft recovery, low leakage, and robust surge handling in cost-effective DO-201AD packaging.
FAQ
What is the maximum junction temperature rating for BY500-400-E3/73?
The BY500-400-E3/73 has a maximum operating junction temperature of +125 °C, verified per Vishay Document Number 88544. This rating allows reliable operation in ambient environments up to +85 °C when mounted on a PCB with appropriate copper area and airflow. Thermal design must account for its 22 °C/W junction-to-ambient resistance under standard test conditions.
Is BY500-400-E3/73 RoHS-compliant and halogen-free?
Yes, BY500-400-E3/73 is RoHS-compliant per Directive 2011/65/EU, confirmed by the E3 suffix and Vishay's Material Categorization Policy (Doc. 99912). It also meets JEDEC JS709A halogen-free requirements, with no brominated flame retardants or chlorine-based compounds in the molding compound or plating.
What does the "/73" suffix indicate in BY500-400-E3/73?
The "/73" suffix in BY500-400-E3/73 specifies the packaging configuration: 1000-piece ammo pack packaging, as defined in Vishay's ordering information table. It does not affect electrical or thermal specifications-only logistics and handling format-and is fully interchangeable with /54 (tape-and-reel) for functional use.
How does the soft recovery characteristic of BY500-400-E3/73 benefit EMI performance?
The soft recovery of BY500-400-E3/73 reduces abrupt current collapse during turn-off, suppressing high-frequency ringing and voltage spikes that couple into adjacent circuitry. This directly lowers conducted and radiated emissions in SMPS and inverter designs-reducing filter component count and aiding compliance with CISPR 22/32 standards without external snubbers.
Can BY500-400-E3/73 be used in place of BY500-600-E3/73?
No-BY500-400-E3/73 is rated for 400 V VRRM, while BY500-600-E3/73 is rated for 600 V. Substituting the 400 V part in a 600 V application risks reverse breakdown under transient overvoltage or line surges. Always match VRRM to worst-case system voltage plus safety margin; the two share identical package, current rating, and recovery behavior but differ only in blocking voltage.
BY500-400-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):
- 400 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.35 V @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 200 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 400 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
BY500-400-E3/73 FAQ
1.How can I place an order for BY500-400-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BY500-400-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 BY500-400-E3/73 reliable?
The price and inventory of BY500-400-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 BY500-400-E3/73 is usually 5 days.
3.What payment methods are accepted for BY500-400-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BY500-400-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BY500-400-E3/73?
BY500-400-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BY500-400-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 BY500-400-E3/73?
For technical support, including BY500-400-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BY500-400-E3/73 requirements.
6.How does Aetrix verify that BY500-400-E3/73 is sourced from the original manufacturer or authorized distributors?
All BY500-400-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 BY500-400-E3/73 meets industry standards.
7.What is the process for return or replacement of BY500-400-E3/73?
All BY500-400-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BY500-400-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 BY500-400-E3/73 part is unused and in its original packaging.
Return procedure for BY500-400-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BY500-400-E3/73 Tags
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1N4448X-TP
Micro Commercial Co
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1N4148WX-TP
Micro Commercial Co
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1N4148TR
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MMSD4148T1G
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MMBD914LT3G
onsemi
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BAS16HT1G
onsemi
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1N914BWT
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BAS21LT1G
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LL4148
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BAV21W-7-F
Diodes Incorporated
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