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Diodes Incorporated LTTH806RF5
- Part No.:
- LTTH806RF5
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- 3-PowerDFN
- Datasheet:
-
LTTH806RF5.pdf
- Description:
- DIODE GEN PURP 600V 8A F5
- Quantity:
- Payment:
- Shipping:
Inventory:5,838
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Product details
Overview
LTTH806RF5 from Diodes Incorporated is a hyper-fast glass passivated rectifier diode rated for 600 V repetitive peak reverse voltage and 8 A average forward current at Tc = 95°C, with 25 ns typical reverse recovery time at 25°C and 4.5–7.2 A reverse recovery current at 125°C; used in high-frequency switching power supplies and PFC stages.
For engineers reviewing the LTTH806RF5 datasheet, LTTH806RF5 pinout, LTTH806RF5 application, or LTTH806RF5 equivalent, key selection criteria include reverse recovery performance under high dI/dt (−200 A/μs), thermal resistance (3 °C/W), junction capacitance (60 pF), and RoHS-compliant green packaging in F5-PAK.
Technical Context
This device is a single-die, planar, epitaxial silicon hyper-fast recovery rectifier optimized for high-efficiency AC/DC conversion where low QRR (120–500 nC) and fast TRR reduce switching losses. It operates across −55°C to +150°C junction temperature range and supports surge currents up to 160 A (1 ms).
The F5-PAK package enables high thermal dissipation via case-to-heatsink conduction (RthJC = 3 °C/W), while its molded plastic construction with UL 94V-0 rating and halogen/antimony-free materials meets stringent environmental compliance requirements without compromising ruggedness.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Withstands repetitive 600 V reverse voltage in bridge or boost configurations without breakdown. |
| I(AV) | 8 A @ Tc = 95°C - Sustains continuous DC output current in thermally managed PCB layouts. |
| TRR | 25 ns (typ) @ 25°C - Enables operation at >100 kHz switching frequencies with minimal tail current loss. |
| QRR | 120–500 nC - Low stored charge reduces turn-off losses in hard-switched PFC and SMPS topologies. |
| RthJC | 3 °C/W - Allows direct heatsink mounting for efficient thermal management in high-power density designs. |
| CJ | 60 pF @ 1 MHz, 4 V - Minimizes capacitive coupling and EMI generation in high-dv/dt environments. |
| IRM | 4.5–7.2 A @ 125°C - Limits peak reverse recovery current during transient overloads at elevated temperatures. |
Pinout & Package
F5-PAK is a surface-mount, 3-terminal molded plastic package with exposed metal tab for thermal and electrical connection. Polarity is marked on body; Pin 1 (anode), Pin 2 (cathode), Pin 3 (case/thermal pad, electrically connected to cathode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PIN1 | Anode | Main current entry point; connects to AC input or switch node in boost PFC. |
| PIN2 | Cathode | Main current exit; ties to output bus or ground return path. |
| PIN3 | Case / Thermal Pad | Electrically tied to cathode; provides low-impedance thermal path to heatsink or copper pour. |
Key Features
| Feature | Design Value |
|---|---|
| Hyper-fast recovery | 25 ns TRR enables high-frequency operation (>100 kHz) with reduced switching loss vs. standard fast rectifiers. |
| Low QRR | 120–500 nC minimizes energy dissipated during diode turn-off in hard-switched converters. |
| F5-PAK thermal design | 3 °C/W RthJC allows direct thermal coupling to heatsinks or large PCB copper areas for stable 8 A operation. |
| Green construction | Halogen- and antimony-free molding compound (UL 94V-0) meets IEC 61249-2-21 and RoHS 3 requirements. |
Applications
| AC/DC Power Supply Input Stage | Boost PFC Circuit |
|---|---|
Use Scenario: Rectifying 50/60 Hz AC mains before bulk capacitor filtering in offline SMPS. IC Role / Device Role / Timing Role: Primary rectifier handling full-line current with low conduction loss and minimal reverse recovery stress. Use Value: 1.5 V VF at 25°C and 8 A ensures <12 W conduction loss; 600 V VRRM supports universal input (85–265 VAC). | Use Scenario: Output rectification in continuous-conduction-mode (CCM) boost PFC stage operating at 65–133 kHz. IC Role / Device Role / Timing Role: Fast-recovery output diode minimizing QRR-related losses during MOSFET turn-on transitions. Use Value: 25 ns TRR and 120 nC QRR reduce turn-off loss by >40% vs. standard fast diodes at 100 kHz. |
| Industrial Motor Drive DC Link | LED Driver Secondary Rectification |
Use Scenario: DC link rectification in 3-phase inverter front-end with regenerative braking energy feedback. IC Role / Device Role / Timing Role: High-surge-capable rectifier absorbing 160 A non-repetitive surges during fault events. Use Value: 160 A IFSM (1 ms) and −55°C to +150°C TJ range ensure robustness in harsh industrial environments. | Use Scenario: Secondary-side rectification in isolated flyback LED drivers delivering constant current to high-brightness arrays. IC Role / Device Role / Timing Role: Low-CJ (60 pF), low-VF diode reducing EMI and conduction loss in compact, thermally constrained enclosures. Use Value: 60 pF capacitance limits high-frequency noise injection; green package supports Class II safety certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hyper-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH8R06DJF | Same 600 V / 8 A rating; TRR = 35 ns (typ), QRR = 200 nC; TO-220FPAC package with insulated tab. | Higher TRR increases switching loss in >100 kHz PFC; insulated tab adds thermal resistance. | Prefer when mechanical isolation required; avoid for ultra-high-frequency PFC where TRR < 30 ns is critical. |
| VS-8EWH06FN-M3 | 600 V / 8 A; TRR = 20 ns (typ), QRR = 90 nC; D2PAK package; RthJC = 2.5 °C/W. | Lower TRR/QRR improves efficiency but D2PAK has smaller thermal pad area than F5-PAK. | Choose for highest efficiency in space-constrained designs; verify PCB copper area suffices for 8 A thermal load. |
Compared with STTH8R06DJF and VS-8EWH06FN-M3, LTTH806RF5 offers balanced performance: lower TRR than ST's part, higher thermal robustness than Vishay's D2PAK, and green compliance not found in older alternatives.
Availability
LTTH806RF5 is available at Aetrix Electronics and suitable for high-frequency switching power supplies, active PFC circuits, and industrial motor drive DC links requiring stable component supply and long-term lifecycle support.
Supply support for LTTH806RF5 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-performance, high-reliability components for power management, signal integrity, and protection.
LTTH806RF5 belongs to Diodes' Hyper-Fast Rectifier product line, engineered specifically for high-efficiency AC/DC conversion in space- and thermally-constrained applications demanding low QRR and fast TRR.
FAQ
What is the maximum allowable case temperature for continuous 8 A operation?
The LTTH806RF5 is rated for 8 A average forward current at Tc = 95°C per the datasheet derating curve. Exceeding this case temperature requires proportional current reduction-e.g., 6 A at 110°C-to maintain reliability and prevent thermal runaway.
Is the F5-PAK package electrically isolated?
No. The F5-PAK metal tab (PIN3) is electrically connected to the cathode (PIN2). This configuration requires careful PCB layout to avoid shorting the cathode to ground or heatsink unless intentional grounding is part of the circuit design.
How does the 60 pF junction capacitance affect EMI in high-speed switching?
The 60 pF CJ measured at 1 MHz and 4 V contributes to high-frequency ringing during diode turn-off. In conjunction with low QRR and fast TRR, it helps limit dv/dt-induced noise, but proper snubbing and layout (short traces, ground plane) remain essential for EMI compliance in >100 kHz designs.
Can LTTH806RF5 replace standard fast recovery diodes in existing designs?
Yes-if the original design uses a 600 V / 8 A fast rectifier with TRR > 50 ns. LTTH806RF5's 25 ns TRR and lower QRR will reduce switching losses and improve efficiency, but verify thermal interface and PCB pad layout compatibility with the F5-PAK footprint before substitution.
LTTH806RF5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 3-PowerDFN
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 V
- Current - Average Rectified (Io):
- 8A
- Voltage - Forward (Vf) (Max) @ If:
- 2.9 V @ 8 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 45 ns
- Current - Reverse Leakage @ Vr:
- 30 µA @ 600 V
- Capacitance @ Vr, F:
- 60pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- F5
- Operating Temperature - Junction:
- -55°C ~ 150°C
LTTH806RF5 FAQ
1.How can I place an order for LTTH806RF5 through Aetrix?
Please submit a Request for Quotation (RFQ) for LTTH806RF5 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 LTTH806RF5 reliable?
The price and inventory of LTTH806RF5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTTH806RF5 is usually 5 days.
3.What payment methods are accepted for LTTH806RF5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTTH806RF5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTTH806RF5?
LTTH806RF5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTTH806RF5 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 LTTH806RF5?
For technical support, including LTTH806RF5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTTH806RF5 requirements.
6.How does Aetrix verify that LTTH806RF5 is sourced from the original manufacturer or authorized distributors?
All LTTH806RF5 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 LTTH806RF5 meets industry standards.
7.What is the process for return or replacement of LTTH806RF5?
All LTTH806RF5 units undergo pre-shipment inspection (PSI). If there is an issue with LTTH806RF5, 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 LTTH806RF5 part is unused and in its original packaging.
Return procedure for LTTH806RF5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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