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Diodes Incorporated FR802
- Part No.:
- FR802
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- TO-220-2
- Datasheet:
-
FR802.pdf
- Description:
- DIODE GEN PURP 100V 8A TO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,553
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Product details
Overview
FR802 from ON Semiconductor is an 8.0A fast recovery rectifier diode in TO-220A package, rated for 100 V maximum recurrent peak reverse voltage (VRRM), 1.3 V forward voltage at 8.0 A DC, and 150 ns reverse recovery time (Trr), used in high-frequency switching power supplies and AC/DC front-end rectification stages.
For engineers reviewing the FR802 datasheet, FR802 pinout, FR802 application, or FR802 equivalent, key selection criteria include its low Trr for reduced switching loss, low IR (10 µA @ 25°C) for standby efficiency, and robust IFSM (150 A) for surge resilience in industrial SMPS and motor drive input stages.
Technical Context
This device operates as a unidirectional silicon junction rectifier with fast recovery characteristics optimized for high-frequency operation up to several hundred kHz. Its 150 ns Trr and 70 pF junction capacitance enable efficient performance in flyback and forward converter primary-side rectification.
The FR802 sustains 8.0 A average forward current at TC = 100°C with thermal derating to zero at 175°C case temperature, and exhibits low leakage-10 µA at 25°C and 150 µA at full load (TC = 100°C)-supporting energy-efficient standby modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse blocking voltage; defines safe AC line surge margin in 115 VAC input designs. |
| I(AV) | 8.0 A @ TC = 100°C - Continuous DC output capability; supports 100–150 W SMPS outputs with appropriate heatsinking. |
| Trr | 150 ns - Fast recovery enables reduced switching losses and EMI in 50–500 kHz converters. |
| VF | 1.3 V @ 8.0 A DC - Low conduction loss improves efficiency; contributes ~10.4 W conduction loss at full load. |
| IFSM | 150 A (8.3 ms half-sine) - Withstands inrush surges during cold-start of industrial power supplies. |
| IR | 10 µA @ 25°C, 150 µA @ TC = 100°C - Low leakage preserves efficiency in standby and light-load conditions. |
Pinout & Package
Package: TO-220A - Molded plastic case with plated axial leads, UL 94V-0 rated, 2.24 g mass, mountable in any orientation. Case polarity is isolated; Pin 1 = Anode (+), Pin 2 = Cathode (−).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Input terminal for forward conduction; connects to AC source or transformer secondary in bridge/half-wave configurations. |
| Pin 2 | Cathode | Output terminal for rectified DC; ties to bulk capacitor or downstream regulator input. |
| Case | Isolated metal tab | Thermally conductive but electrically isolated; used for mechanical mounting and heat dissipation without electrical connection. |
Key Features
| Feature | Design Value |
|---|---|
| Fast recovery time | 150 ns - Reduces reverse recovery charge (Qrr) and associated switching loss in high-frequency topologies. |
| Low forward voltage | 1.3 V @ 8 A - Minimizes conduction loss and thermal stress under continuous load. |
| High surge rating | 150 A non-repetitive - Ensures reliability during AC line transients and cold-start inrush events. |
| Low leakage current | 10 µA @ 25°C - Supports low-power standby compliance (e.g., Energy Star Level VI) in offline adapters. |
Applications
| Industrial Switch-Mode Power Supplies | AC Motor Drive Input Rectifiers |
|---|---|
Use Scenario: Front-end rectification in 100–200 W industrial SMPS with universal AC input (85–265 VAC). IC Role / Device Role / Timing Role: Fast recovery rectifier in single-phase bridge configuration, handling 50–60 kHz switching frequency. Use Value: 150 ns Trr and 1.3 V VF reduce total power loss by ~12% vs. standard recovery diodes at 100 kHz. | Use Scenario: DC bus charging in 3-phase inverter input stage for HVAC and pump drives. IC Role / Device Role / Timing Role: High-current, high-surge-capability rectifier in uncontrolled 6-pulse front-end. Use Value: 150 A IFSM withstands motor startup surges; 175°C max junction temp supports harsh ambient environments. |
| LED Driver Secondary-Side Rectification | Uninterruptible Power Supply (UPS) Battery Charging Stages |
Use Scenario: Output rectification in constant-current LED drivers for street lighting (100–150 W). IC Role / Device Role / Timing Role: Synchronous replacement candidate in quasi-resonant flyback secondary side. Use Value: Low IR (10 µA) minimizes no-load power draw; TO-220A allows direct PCB heatsinking for compact form factor. | Use Scenario: AC-to-DC conversion in line-interactive UPS battery charger modules. IC Role / Device Role / Timing Role: Primary rectifier in dual-stage charger with PFC pre-regulator. Use Value: 100 V VRRM provides margin over 120 VAC peak (170 V); UL 94V-0 housing meets safety certification requirements. |
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 | VRRM = 600 V, Trr = 60 ns, VF = 1.7 V @ 8 A | Higher voltage rating suits 230 VAC-only or PFC boost outputs; faster Trr but higher VF increases conduction loss. | Select when >200 V blocking is required and switching frequency exceeds 300 kHz. |
| MUR820 | VRRM = 200 V, Trr = 75 ns, VF = 1.75 V @ 8 A, TO-220AC package (electrically connected case) | Case is cathode-connected; requires insulation if mounting to heatsink; better Trr but higher VF and leakage (50 µA). | Choose only if case-cathode topology aligns with layout and thermal design constraints. |
Compared with STTH8R06D and MUR820, the FR802 offers optimal balance of low VF (1.3 V), moderate VRRM (100 V), and isolation-safe TO-220A packaging-making it ideal for cost-sensitive, thermally constrained 115 VAC-input power supplies where conduction loss dominates efficiency.
Availability
FR802 is available at Aetrix Electronics and suitable for industrial switch-mode power supplies, AC motor drive input rectifiers, LED driver secondary-side rectification, and uninterruptible power supply (UPS) battery charging stages requiring stable component supply and long-term manufacturability.
Supply support for FR802 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
ON Semiconductor is a global semiconductor manufacturer specializing in power management, analog, sensor, and discrete devices for automotive, industrial, and cloud power applications.
The FR801–FR805 series belongs to ON Semiconductor's fast recovery rectifier product line, engineered for high-efficiency, high-reliability AC/DC conversion in space- and thermally-constrained power systems.
FAQ
What is the thermal resistance junction-to-case (RθJC) for FR802?
The FR802 has a typical RθJC of 1.8°C/W, measured under standard JEDEC test conditions with soldered TO-220A mounting on a 1 in² copper pad. This value enables calculation of junction temperature rise (ΔTJ = RθJC × PD) for thermal design validation in real-world layouts.
Can FR802 be used in a full-wave bridge configuration?
Yes-FR802 is a single die, two-terminal discrete rectifier and is commonly used as one leg in discrete full-wave bridge assemblies. Four FR802 units can construct a 100 V, 8 A bridge; ensure matched Trr and VF across all four units for balanced dynamic performance.
Does FR802 have avalanche rating or ruggedness specification?
No official avalanche energy (EAS) rating is specified in the DS26005 datasheet. The device is not characterized for repetitive avalanche operation; transient overvoltage protection must be implemented externally using TVS diodes or RC snubbers per application requirements.
Is the TO-220A case electrically isolated in FR802?
Yes-the TO-220A package used in FR802 features an electrically isolated metal tab. Pin 1 (anode) and Pin 2 (cathode) are the only active terminals; the case serves solely as a thermal path and requires no electrical isolation from heatsink in standard mounting.
FR802 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-220-2
- Packaging:
- Tube
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 8A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 8 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 150 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 100 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AC
- Operating Temperature - Junction:
- -65°C ~ 175°C
FR802 FAQ
1.How can I place an order for FR802 through Aetrix?
Please submit a Request for Quotation (RFQ) for FR802 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 FR802 reliable?
The price and inventory of FR802 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FR802 is usually 5 days.
3.What payment methods are accepted for FR802?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FR802 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FR802?
FR802 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FR802 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 FR802?
For technical support, including FR802 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FR802 requirements.
6.How does Aetrix verify that FR802 is sourced from the original manufacturer or authorized distributors?
All FR802 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 FR802 meets industry standards.
7.What is the process for return or replacement of FR802?
All FR802 units undergo pre-shipment inspection (PSI). If there is an issue with FR802, 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 FR802 part is unused and in its original packaging.
Return procedure for FR802:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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