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Vishay General Semiconductor - Diodes Division BY448GPHE3/73
- Part No.:
- BY448GPHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
BY448GPHE3/73.pdf
- Description:
- DIODE GP 1.65KV 1.5A DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,711
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Product details
Overview
BY448GPHE3/73 from Vishay General Semiconductor is a glass-passivated superectifier diode in DO-15 package, rated for 1650 V repetitive peak reverse voltage, 1.5 A average forward current, and 40 A non-repetitive surge current. It delivers low 1.6 V forward voltage at 3.0 A and exhibits only 5.0 μA reverse leakage at 1650 V, optimized for high-voltage clamping and damper circuits in horizontal deflection systems.
For engineers reviewing the BY448GPHE3/73 datasheet, BY448GPHE3/73 pinout, BY448GPHE3/73 application, or BY448GPHE3/73 equivalent, key selection criteria include verified 1650 V VRRM rating, 20 μs maximum reverse recovery time, DO-15 mechanical compatibility, thermal resistance of 55 °C/W, and RoHS-compliant matte tin-plated leads meeting J-STD-002 solderability standards.
Technical Context
This device implements a single-diode superectifier structure with cavity-free glass-passivated junction, enabling high reliability under repetitive high-voltage stress. Its 175 °C maximum junction temperature and 55 °C/W thermal resistance support operation in compact, convection-cooled power supply layouts.
The BY448GPHE3/73 is characterized for 1.5 A average forward current at 50 °C ambient with 0.375" lead length, and its 20 μs trr (max) and 0.5 μs typical trr (IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A) confirm suitability for moderate-speed switching in clamp/damper roles where fast turn-off is required but not ultra-high frequency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1650 V - supports rectification and clamping in 1150 V RMS AC line-derived systems |
| IF(AV) | 1.5 A at 50 °C ambient, 0.375" lead length - defines continuous DC output capability in power supplies |
| IFSM | 40 A (8.3 ms half-sine) - withstands inrush surges in converter startup and fault conditions |
| trr (max) | 20 μs - limits switching losses and voltage overshoot in clamp circuits operating below ~20 kHz |
| VF | 1.6 V at IF = 3.0 A - reduces conduction loss and thermal load in high-current damper paths |
| IR | 5.0 μA at VR = 1650 V, 25 °C - ensures minimal leakage-induced voltage drift in precision clamp references |
| RθJA | 55 °C/W - enables thermal design with standard PCB mounting and no forced airflow |
Pinout & Package
DO-15 (DO-204AC) molded epoxy package with glass body; matte tin-plated leads; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to low-side switch node or transformer secondary in clamp topology |
| Cathode | Forward current exit / reverse blocking terminal | Connected to high-voltage rail or flyback winding end; color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Superectifier structure | Enhanced junction robustness against voltage transients and thermal cycling in horizontal deflection yoke circuits |
| Cavity-free glass passivation | Eliminates moisture ingress paths, ensuring long-term reliability in humid industrial environments |
| Low VF (1.6 V @ 3 A) | Reduces power dissipation by >15% vs. standard 1N4007-class diodes at same current, lowering heatsink requirements |
| 175 °C TJ max | Enables operation in sealed enclosures or near heat-generating components without derating penalties |
| JESD 22-B106 compliant | Validated for 275 °C solder dip (10 s), supporting wave and selective soldering processes |
Applications
| Horizontal Deflection Clamp | High-Voltage Power Supply Freewheeling |
|---|---|
Use Scenario: Clamps flyback voltage spike across horizontal output transistor in CRT TV/monitor deflection circuits. IC Role / Device Role / Timing Role: Fast-recovery damper diode absorbing energy from deflection yoke during retrace. Use Value: 20 μs max trr and 1650 V VRRM prevent transistor breakdown while minimizing ringing due to low CJ (15 pF). | Use Scenario: Provides freewheeling path for inductive loads in 1 kV+ DC-DC converters and inverters. IC Role / Device Role / Timing Role: Single high-voltage rectifier conducting during off-cycle of main switch. Use Value: 40 A IFSM handles transient overloads; 1.5 A IF(AV) sustains continuous output under full load. |
| Snubber Network Diode | Capacitor-Charging Circuit |
Use Scenario: Forms part of RC snubber across switching devices in industrial motor drives. IC Role / Device Role / Timing Role: Blocks reverse voltage while allowing controlled discharge through resistor during turn-off. Use Value: Low IR (5.0 μA) prevents snubber capacitor self-discharge; glass passivation ensures stability over 10+ year service life. | Use Scenario: Charges high-voltage storage capacitors in pulse-forming networks and laser drivers. IC Role / Device Role / Timing Role: Unidirectional charging element isolating source from charged capacitor bank. Use Value: 1650 V VRRM supports direct connection to 1.2 kV DC bus; 175 °C TJ rating accommodates elevated ambient in enclosed modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage damper diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BY449GP-E3/73 | VRRM = 1800 V, trr = 25 μs (max), VF = 1.65 V @ 3 A | Higher voltage margin but slower recovery; suitable where 1650 V headroom is insufficient | Select when system requires >1650 V blocking with acceptable trade-off in switching speed |
| 1N5408G | VRRM = 1000 V, trr = 2000 ns (typ), IF(AV) = 3.0 A, DO-201AD package | Lower voltage rating, higher current, larger footprint; not drop-in compatible | Choose only if 1000 V suffices and board space allows DO-201AD; verify thermal interface for 3 A operation |
Compared with BY448GPHE3/73, BY449GP-E3/73 offers higher voltage safety margin at the cost of slightly increased switching loss, while 1N5408G provides double the average current but halves the blocking voltage and requires PCB layout revision.
Availability
BY448GPHE3/73 is available at Aetrix Electronics and suitable for horizontal deflection clamping, high-voltage freewheeling, and snubber network applications requiring stable component supply and legacy-design continuity.
Supply support for BY448GPHE3/73 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 high-reliability diodes, rectifiers, and power devices for industrial, automotive, and consumer applications.
The BY448GPHE3/73 belongs to Vishay's Superectifier® family, engineered specifically for high-voltage clamping, damper, and freewheeling roles in CRT deflection, power conversion, and pulse circuitry where ruggedness and long-term parametric stability are critical.
FAQ
What is the maximum junction temperature rating for BY448GPHE3/73?
The BY448GPHE3/73 has a maximum junction temperature (TJ max) of +175 °C, enabling reliable operation in thermally constrained environments such as sealed power supplies or proximity to heat-generating components. This rating is validated per JEDEC test conditions and supports extended lifetime under continuous 1.5 A load at elevated ambient temperatures when mounted with 0.375" lead length.
Is BY448GPHE3/73 RoHS-compliant and lead-free?
Yes, BY448GPHE3/73 is RoHS-compliant and lead-free, indicated by the "E3" suffix. Its matte tin-plated leads meet J-STD-002 solderability requirements and JESD 201 Class 1A whisker testing. The molding compound complies with UL 94 V-0 flammability standards, confirming suitability for commercial-grade applications with environmental compliance mandates.
What does the "73" in BY448GPHE3/73 signify?
The "73" in BY448GPHE3/73 is Vishay's preferred package code denoting ammo pack packaging with a base quantity of 2000 units. It does not affect electrical or thermal specifications - all BY448GP variants (including /54, /73, and bare part) share identical electrical characteristics, DO-15 mechanical outline, and reliability performance per Document Number 88543.
Can BY448GPHE3/73 replace BY448GP-E3/54 in existing designs?
Yes, BY448GPHE3/73 is functionally and mechanically identical to BY448GP-E3/54, differing only in packaging format (ammo pack vs. 13" tape-and-reel). Both share identical DO-15 footprint, electrical specs, thermal behavior, and RoHS compliance. No PCB or schematic changes are required when substituting BY448GPHE3/73 for BY448GP-E3/54 in production or repair contexts.
Why is BY448GPHE3/73 marked "Not for New Designs"?
"Not for New Designs" indicates Vishay recommends alternative solutions for newly initiated projects, likely due to newer diodes offering improved trr, VF, or packaging. However, BY448GPHE3/73 remains fully supported for legacy design maintenance, repair, and continuity supply. Its specifications, qualification data, and manufacturing remain unchanged per Revision 05-Oct-2021 of Document 88543.
BY448GPHE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- SUPERECTIFIER®
- Package/Case:
- DO-204AC, DO-15, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1650 V
- Current - Average Rectified (Io):
- 1.5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.6 V @ 3 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 20 µs
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1650 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
- Operating Temperature - Junction:
- -65°C ~ 175°C
BY448GPHE3/73 FAQ
1.How can I place an order for BY448GPHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BY448GPHE3/73 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 BY448GPHE3/73 reliable?
The price and inventory of BY448GPHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BY448GPHE3/73 is usually 5 days.
3.What payment methods are accepted for BY448GPHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BY448GPHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BY448GPHE3/73?
BY448GPHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BY448GPHE3/73 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 BY448GPHE3/73?
For technical support, including BY448GPHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BY448GPHE3/73 requirements.
6.How does Aetrix verify that BY448GPHE3/73 is sourced from the original manufacturer or authorized distributors?
All BY448GPHE3/73 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 BY448GPHE3/73 meets industry standards.
7.What is the process for return or replacement of BY448GPHE3/73?
All BY448GPHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BY448GPHE3/73, 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 BY448GPHE3/73 part is unused and in its original packaging.
Return procedure for BY448GPHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BY448GPHE3/73 Tags
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