My Inquiry
My Account
STMicroelectronics BYT71-800
- Part No.:
- BYT71-800
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-220-2
- Datasheet:
-
BYT71-800.pdf
- Description:
- DIODE GEN PURP 800V 6A TO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,348
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BYT71-800 from STMicroelectronics is a fast recovery rectifier diode designed for high-voltage AC/DC power conversion and polarity protection in industrial power supplies, UPS systems, and motor drive front-ends. It delivers 6 A average forward current (IF(AV)), 800 V repetitive peak reverse voltage (VRRM), 1.4 V max forward voltage at 6 A and 25°C, 300 ns max reverse recovery time (trr), and operates up to 150°C junction temperature.
For engineers reviewing the BYT71-800 datasheet, BYT71-800 pinout, BYT71-800 application, or BYT71-800 equivalent, key selection criteria include its TO-220AC package thermal resistance (Rth(j-c) = 2.3 °C/W), soft recovery behavior under dIF/dt = −15 A/µs, and conduction loss equation P = 1.15 × IF(AV) + 0.025 × IF²(RMS).
Technical Context
This single-chip silicon rectifier uses planar passivated junction technology optimized for fast, soft recovery-minimizing voltage overshoot and EMI during commutation. Its trr ≤ 300 ns at IF = 1 A, dIF/dt = −15 A/µs, VR = 30 V ensures compatibility with high-frequency switching topologies like PFC boost stages and secondary-side rectification in SMPS.
The device supports conduction-limited operation up to 6 A average current at Tc = 130°C, with thermal design anchored by Rth(j-c) = 2.3 °C/W and maximum junction temperature of 150°C. Reverse leakage remains ≤1 mA at 100°C and full VRRM, enabling stable performance in elevated ambient environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Withstands repetitive reverse voltage up to 800 V without breakdown, suitable for 400 V DC bus applications with safety margin. |
| IF(AV) | 6 A - Sustains 6 A average forward current at case temperature 130°C, defining continuous power handling capability. |
| VF (max) | 1.4 V @ 6 A, 25°C - Forward voltage drop directly impacts conduction losses; used in loss calculation P = 1.15×IF(AV) + 0.025×IF²(RMS). |
| trr (max) | 300 ns - Fast reverse recovery enables use in 50–100 kHz switching converters without excessive switching loss or ringing. |
| Rth(j-c) | 2.3 °C/W - Junction-to-case thermal resistance determines heatsink sizing; 2.3 °C/W allows ~26 W dissipation at ΔT = 60°C. |
| IFSM | 90 A @ 10 ms - Non-repetitive surge rating supports inrush current handling during power-up or fault transients. |
| IR (max) | 1 mA @ 100°C, VRRM - Low high-temperature leakage preserves efficiency and reliability in thermally stressed designs. |
Pinout & Package
BYT71-800 is housed in a TO-220AC package with isolated tab (no internal connection to cathode/anode), intended for conductive cooling via mounting to heatsink. The package features a single molded plastic body with three leads: anode, cathode, and electrically isolated metal tab.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry point | Connected to AC input or transformer secondary; must withstand full reverse voltage when off. |
| Cathode (Lead 2) | Forward current exit point | Connects to DC bus or filter capacitor; carries full load current and defines output polarity. |
| Tab (Metal surface) | Thermal interface only | Electrically isolated per TO-220AC spec; provides primary heat path to heatsink; no circuit connection. |
Key Features
| Feature | Design Value |
|---|---|
| Fast & soft recovery | trr ≤ 300 ns with low Qrr and minimal voltage overshoot, reducing EMI and snubber stress in hard-switched converters. |
| High VRRM rating | 800 V blocking capability supports universal-input (85–265 VAC) SMPS and 600 V DC link rectification. |
| TO-220AC isolation | Electrically isolated metal tab enables direct heatsink mounting without insulating hardware, simplifying thermal design. |
| 150°C junction rating | Extended thermal operating range allows reliable operation in enclosed industrial enclosures with limited airflow. |
Applications
| Industrial Power Supplies | Uninterruptible Power Systems (UPS) |
|---|---|
Use Scenario: Input rectification stage in 1–3 kW offline SMPS with active PFC. IC Role / Device Role / Timing Role: Fast recovery rectifier converting AC line to high-voltage DC bus; commutates at 50–100 kHz. Use Value: 300 ns trr minimizes turn-off loss and reduces snubber component size versus standard rectifiers. | Use Scenario: Battery charger input stage and inverter output rectification in double-conversion UPS. IC Role / Device Role / Timing Role: Polarity protection and bidirectional energy flow management during battery charge/discharge cycles. Use Value: 800 V VRRM and 90 A IFSM handle line surges and inverter regeneration spikes reliably. |
| Motor Drive Front-Ends | Welding Power Sources |
Use Scenario: Three-phase bridge rectification feeding DC link capacitors in VFD input stages. IC Role / Device Role / Timing Role: High-current, high-reliability rectifier operating continuously at 6 A average load with thermal cycling. Use Value: Rth(j-c) = 2.3 °C/W and 150°C Tj rating support compact heatsink integration in space-constrained drives. | Use Scenario: Primary rectification in IGBT-based inverter welders with high-duty-cycle operation. IC Role / Device Role / Timing Role: Handles repetitive 10 ms surges up to 90 A during arc ignition while maintaining low VF. Use Value: 1.4 V VF at 6 A reduces conduction loss and thermal stress during sustained welding output. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH8R06D | 600 V VRRM, 8 A IF(AV), trr = 65 ns, TO-220AC | Lower voltage rating but faster recovery; better suited for 300–400 V DC bus topologies. | Select when higher speed and lower VF (1.15 V) outweigh need for 800 V margin. |
| BYV26E | 600 V VRRM, 2.5 A IF(AV), trr = 25 ns, DO-201AD | Lower current/voltage rating and smaller package; limited to <100 W applications. | Use only in low-power auxiliary supplies where footprint and cost constrain TO-220 adoption. |
Compared with STTH8R06D and BYV26E, BYT71-800 uniquely balances 800 V robustness, 6 A thermal capacity, and 300 ns recovery-making it optimal for industrial 400 V DC bus rectification where voltage margin and surge resilience are critical.
Availability
BYT71-800 is available at Aetrix Electronics and suitable for industrial power supplies, uninterruptible power systems (UPS), motor drive front-ends, and welding power sources requiring stable component supply and long-term lifecycle continuity.
Supply support for BYT71-800 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, Switzerland, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.
BYT71-800 belongs to ST's high-voltage fast recovery diode product line, engineered specifically for ruggedized AC/DC conversion in industrial power equipment where reliability under thermal and electrical stress is paramount.
FAQ
Is BYT71-800 pin-compatible with other TO-220AC rectifiers?
Yes-BYT71-800 uses standard TO-220AC mechanical dimensions and lead configuration (anode–cathode–isolated tab). However, electrical parameters-including VRRM, IF(AV), and trr-differ significantly across manufacturers and series, so electrical validation is required before substitution.
What is the recommended heatsink mounting torque for BYT71-800?
The datasheet specifies a recommended torque value of 0.55 m·N (4.9 in·lb) for the mounting screw, with a maximum allowable torque of 0.70 m·N (6.2 in·lb). Exceeding this may damage the package or compromise thermal interface integrity.
Does BYT71-800 have avalanche capability?
No-BYT71-800 is not rated for repetitive avalanche operation. Its absolute maximum ratings define safe operating area under forward conduction and reverse blocking only; transient overvoltage events require external clamping (e.g., TVS or RC snubber).
Can BYT71-800 be used in synchronous rectification topologies?
No-it is a unidirectional PN junction diode, not a MOSFET-based synchronous rectifier. It lacks gate control and cannot be actively turned off; its use is restricted to passive rectification and freewheeling roles in non-synchronous converters.
BYT71-800 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-220-2
- Packaging:
- Tube
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 800 V
- Current - Average Rectified (Io):
- 6A
- Voltage - Forward (Vf) (Max) @ If:
- 1.4 V @ 6 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 300 ns
- Current - Reverse Leakage @ Vr:
- 20 µA @ 800 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AC
- Operating Temperature - Junction:
- -65°C ~ 150°C
BYT71-800 FAQ
1.How can I place an order for BYT71-800 through Aetrix?
Please submit a Request for Quotation (RFQ) for BYT71-800 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 BYT71-800 reliable?
The price and inventory of BYT71-800 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BYT71-800 is usually 5 days.
3.What payment methods are accepted for BYT71-800?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BYT71-800 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BYT71-800?
BYT71-800 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BYT71-800 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 BYT71-800?
For technical support, including BYT71-800 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BYT71-800 requirements.
6.How does Aetrix verify that BYT71-800 is sourced from the original manufacturer or authorized distributors?
All BYT71-800 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 BYT71-800 meets industry standards.
7.What is the process for return or replacement of BYT71-800?
All BYT71-800 units undergo pre-shipment inspection (PSI). If there is an issue with BYT71-800, 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 BYT71-800 part is unused and in its original packaging.
Return procedure for BYT71-800:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BYT71-800 Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
