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Vishay General Semiconductor - Diodes Division BY251GPHE3/73
- Part No.:
- BY251GPHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
BY251GPHE3/73.pdf
- Description:
- DIODE GEN PURP 200V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:9,803
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Product details
Overview
BY251GPHE3/73 from Vishay General Semiconductor is a glass-passivated junction plastic rectifier diode in DO-201AD package, rated for 200 V repetitive peak reverse voltage (VRRM), 3.0 A average forward current (IF(AV)), and 100 A non-repetitive surge current (IFSM), used as a freewheeling or output rectifier in AC/DC power supplies and DC-DC converters.
For engineers reviewing the BY251GPHE3/73 datasheet, BY251GPHE3/73 pinout, BY251GPHE3/73 application, or BY251GPHE3/73 equivalent, key selection criteria include its 1.1 V forward voltage at 3.0 A, 5.0 μA reverse leakage at rated voltage, 3.0 μs reverse recovery time, and DO-201AD mechanical compatibility with high-temperature PCB assembly.
Technical Context
This device implements a single-die Superectifier® structure with cavity-free glass passivation, enabling stable operation up to 175 °C junction temperature and low thermal resistance (RθJL = 10 °C/W). Its fast recovery (trr = 3.0 μs) and low junction capacitance (CJ = 40 pF at 4.0 V) support switching applications up to ~100 kHz.
The diode exhibits low forward voltage drop (VF = 1.1 V @ 3.0 A) and minimal reverse leakage (IR = 5.0 μA @ 200 V), making it suitable for efficiency-critical rectification where conduction loss and standby power must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - maximum repetitive reverse blocking capability without breakdown |
| IF(AV) | 3.0 A - continuous forward current rating at 55 °C ambient with 10 mm leads |
| IFSM | 100 A - peak surge current tolerance for 10 ms half-sine, critical for inrush protection |
| VF | 1.1 V @ 3.0 A - low conduction loss enabling higher system efficiency |
| trr | 3.0 μs - fast recovery supports moderate-frequency switching and reduces switching loss |
| IR | 5.0 μA @ 200 V - low leakage preserves standby power in off-state circuits |
| TJ max. | 175 °C - extended thermal operating range for high-ambient industrial environments |
Pinout & Package
Package: DO-201AD molded epoxy case with glass body; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of rectified path; accepts input during positive half-cycle |
| Cathode | Forward current exit point | Marked with color band; connects to load or filter capacitor; defines polarity of output |
Key Features
| Feature | Design Value |
|---|---|
| Superectifier® structure | Enhanced reliability via cavity-free glass passivation, eliminating moisture ingress paths at junction |
| Low VF and IR | 1.1 V forward drop and 5.0 μA leakage reduce conduction losses and improve no-load efficiency |
| Fast trr = 3.0 μs | Minimizes reverse recovery charge (Qrr), lowering EMI and switching losses in SMPS designs |
| DO-201AD package | Industry-standard outline with 10 °C/W junction-to-lead thermal resistance for robust heat dissipation |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker test and UL 94 V-0 flammability rating |
Applications
| AC/DC Power Supply Output Rectification | DC-DC Converter Freewheeling Diode |
|---|---|
Use Scenario: Used in secondary-side rectification of offline flyback or forward converters delivering 5–24 V at up to 3 A. IC Role / Device Role / Timing Role: Unidirectional current valve converting pulsating DC to smoothed output; handles continuous 3.0 A average current. Use Value: Low VF (1.1 V) reduces power loss by ~0.3 W vs. higher-VF alternatives, improving thermal margin and efficiency. | Use Scenario: Placed across inductive loads (e.g., buck converter output chokes) to recirculate stored energy during switch-off. IC Role / Device Role / Timing Role: Freewheeling path enabling continuous inductor current; must withstand 100 A surge during transient events. Use Value: IFSM = 100 A ensures robustness against inductive kickback without failure under typical load-step conditions. |
| Inverter DC Bus Clamping | Consumer Appliance Input Bridge Leg |
Use Scenario: Employed in IGBT or MOSFET-based motor inverters to clamp inductive spikes on DC bus lines. IC Role / Device Role / Timing Role: Transient voltage suppressor during switching transitions; operates in reverse-biased blocking mode until clamping threshold. Use Value: VRRM = 200 V and VRSM = 220 V provide sufficient margin above 170 V DC bus in 120 VAC-input systems. | Use Scenario: Integrated into compact bridge rectifiers inside AC-powered consumer devices (e.g., power tools, HVAC controls). IC Role / Device Role / Timing Role: Single-phase rectifying element in discrete or hybrid bridge configurations; handles 50/60 Hz line frequency. Use Value: DO-201AD package enables automated placement and reflow compatibility while maintaining 175 °C TJ max for enclosed thermal environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L06S | 600 V VRRM, 3.0 A IF(AV), VF = 1.15 V @ 3 A, trr = 35 ns | Faster recovery but higher VRRM; suited for higher-voltage or higher-frequency topologies | Select when >200 V blocking or <100 ns trr required; not direct replacement due to voltage rating mismatch |
| 1N5408G | 1000 V VRRM, 3.0 A IF(AV), VF = 1.2 V @ 3 A, trr ≈ 2000 ns | Slower recovery, higher VF, higher voltage rating; legacy general-purpose part | Acceptable for low-frequency (<1 kHz), non-critical efficiency applications where cost is primary driver |
Compared with STTH3L06S and 1N5408G, BY251GPHE3/73 offers optimized balance of 200 V rating, 3.0 μs trr, and 1.1 V VF-making it ideal for cost-sensitive, thermally constrained 50/60 Hz or medium-frequency rectification where precise voltage matching and moderate speed are required.
Availability
BY251GPHE3/73 is available at Aetrix Electronics and suitable for AC/DC power supply design, DC-DC converter freewheeling, and inverter clamping applications requiring stable component supply, RoHS compliance, and DO-201AD mechanical standardization.
Supply support for BY251GPHE3/73 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 General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and optoelectronics with emphasis on reliability, thermal performance, and automotive-grade qualification.
BY251GPHE3/73 belongs to the Superectifier® family of glass-passivated rectifiers designed for high-reliability power conversion in industrial, consumer, and computing power supplies where long-term stability and surge robustness are essential.
FAQ
What is the maximum junction temperature rating for BY251GPHE3/73?
The BY251GPHE3/73 has a maximum junction temperature (TJ max.) of +175 °C, verified per Vishay's datasheet revision 07-Nov-16. This rating allows reliable operation in high-ambient environments such as enclosed power supplies or motor drive enclosures. Derating curves confirm usable current capacity down to -65 °C storage temperature. The BY251GPHE3/73 maintains specified electrical parameters within this full range when mounted per JEDEC standards.
Is BY251GPHE3/73 RoHS-compliant and lead-free?
Yes, BY251GPHE3/73 carries the E3 suffix, indicating full RoHS compliance per EU Directive 2011/65/EU and Vishay's material categorization standard. Its matte tin-plated leads meet JESD 201 Class 1A whisker testing, and the molding compound complies with UL 94 V-0 flammability requirements. The BY251GPHE3/73 contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits.
What does the "HE3/73" suffix mean in BY251GPHE3/73?
The "HE3/73" suffix identifies packaging and compliance: "E3" denotes RoHS-compliant, commercial-grade construction with whisker-tested tin plating; "/73" specifies ammo pack packaging with 1000 units per pack. This differs from /54 (tape-and-reel, 1400 units). The BY251GPHE3/73 is functionally identical to BY251GP-E3/73-the full designation confirms traceable, standardized ordering per Vishay's documentation.
Can BY251GPHE3/73 replace BY252GPHE3/73 in a 400 V design?
No, BY251GPHE3/73 is not suitable for 400 V designs because its VRRM is rated at 200 V, whereas BY252GPHE3/73 is rated for 400 V. Substituting BY251GPHE3/73 risks reverse breakdown and catastrophic failure under normal operating voltage. Always match VRRM to circuit peak reverse stress with ≥20 % margin. The BY251GPHE3/73 must only be used in ≤200 V blocking applications.
What is the reverse recovery time (trr) of BY251GPHE3/73 and how is it measured?
The BY251GPHE3/73 has a maximum reverse recovery time (trr) of 3.0 μs, measured under IF = 0.5 A, IR = 1.0 V, and Irr = 0.25 A per Vishay's datasheet. This parameter reflects the time required for minority carriers to clear after forward conduction ceases. The BY251GPHE3/73 achieves this fast recovery via Superectifier® junction design, supporting efficient operation in medium-frequency switching circuits without excessive switching loss.
BY251GPHE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- SUPERECTIFIER®
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 3 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 3 µs
- Current - Reverse Leakage @ Vr:
- 5 µA @ 200 V
- Capacitance @ Vr, F:
- 40pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -65°C ~ 175°C
BY251GPHE3/73 FAQ
1.How can I place an order for BY251GPHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BY251GPHE3/73 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 BY251GPHE3/73 reliable?
The price and inventory of BY251GPHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BY251GPHE3/73 is usually 5 days.
3.What payment methods are accepted for BY251GPHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BY251GPHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BY251GPHE3/73?
BY251GPHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BY251GPHE3/73 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 BY251GPHE3/73?
For technical support, including BY251GPHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BY251GPHE3/73 requirements.
6.How does Aetrix verify that BY251GPHE3/73 is sourced from the original manufacturer or authorized distributors?
All BY251GPHE3/73 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 BY251GPHE3/73 meets industry standards.
7.What is the process for return or replacement of BY251GPHE3/73?
All BY251GPHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BY251GPHE3/73, 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 BY251GPHE3/73 part is unused and in its original packaging.
Return procedure for BY251GPHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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