My Inquiry
My Account
Diodes Incorporated FR306-T
- Part No.:
- FR306-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
FR306-T.pdf
- Description:
- DIODE GEN PURP 800V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:2,913
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
FR306-T from Diodes Incorporated is a 3.0A fast recovery rectifier diode in DO-201AD axial package, rated for 800V maximum recurrent peak reverse voltage (VRRM), 1.3V max forward voltage at 3.0A DC, and 150ns reverse recovery time (Trr), used in AC/DC input stages of industrial power supplies and UPS systems.
For engineers reviewing the FR306-T datasheet, FR306-T pinout, FR306-T application, or FR306-T equivalent, key selection criteria include VRRM derating at elevated ambient temperature, Trr impact on switching loss in PFC stages, IR stability under high-temperature bias, and axial lead mechanical retention in through-hole PCB layouts.
Technical Context
This device operates as a unidirectional current switch in single-phase half-wave rectification with 60Hz line frequency, optimized for low conduction loss and reduced reverse recovery charge (Qrr) compared to standard recovery diodes. Its 150ns Trr enables use in higher-frequency auxiliary supplies up to ~20kHz without excessive switching loss.
The DO-201AD package supports 3.0A average forward current at 75°C ambient with 9.5mm lead length, and its UL 94V-0 molded plastic body ensures flame resistance in safety-critical power entry modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Maximum repetitive reverse voltage before breakdown; sets minimum insulation clearance for 400VAC input designs. |
| I(AV) | 3.0 A @ TA=75°C - Continuous forward current rating with 9.5mm lead length; defines heatsinking requirement in open-frame supplies. |
| Trr | 150 ns - Measured at IF=0.5A, IR=1.0A, IRR=0.25A; limits reverse recovery energy in flyback snubbers. |
| VF | 1.3 V @ 3.0A DC - Forward voltage drop at rated current; determines conduction loss of ~3.9W at full load. |
| IR | 10 µA @ VR=800V - Reverse leakage at max blocking voltage; critical for high-impedance bias networks. |
| CJ | 50 pF @ VR=4V, 1MHz - Junction capacitance affecting EMI filter interaction in EMI input stages. |
Pinout & Package
DO-201AD axial-leaded package with cathode indicated by color band; leads are solderable per MIL-STD-202 Method 208, suitable for wave or hand soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward current entry point | Connected to AC input phase or transformer secondary; must withstand surge currents up to 150A. |
| Cathode (banded end) | Forward current exit point | Connected to bulk capacitor positive rail; polarity reversal causes catastrophic failure. |
Key Features
| Feature | Design Value |
|---|---|
| Fast recovery time | 150ns Trr enables lower switching losses than general-purpose rectifiers in 20kHz PFC boost stages. |
| Low forward voltage | 1.3V VF at 3.0A reduces conduction loss by ~15% versus comparable 1N5408-class diodes. |
| High surge rating | 150A IFSM supports cold-start inrush without degradation in 115/230VAC universal-input supplies. |
| UL 94V-0 flammability | Self-extinguishing plastic housing meets EN62368-1 requirements for primary-side power entry modules. |
Applications
| Industrial AC/DC Power Supplies | Uninterruptible Power Supplies (UPS) |
|---|---|
Use Scenario: Input rectification stage in 300–500W offline SMPS with universal AC input (85–265VAC). IC Role / Device Role / Timing Role: Main rectifier converting AC line to DC bus prior to PFC controller and PWM IC. Use Value: 150ns Trr minimizes reverse recovery loss during zero-crossing, improving efficiency by 0.4–0.6% over standard recovery diodes. | Use Scenario: Battery charger input rectifier in line-interactive UPS with automatic voltage regulation. IC Role / Device Role / Timing Role: Unidirectional current path enabling bidirectional AC transfer while blocking reverse battery discharge. Use Value: 800V VRRM provides 2× margin over 400VAC peak, ensuring reliability during brownout and overvoltage transients. |
| Motor Drive Auxiliary Supplies | LED Driver Input Stages |
Use Scenario: Isolated auxiliary supply powering gate drivers and control logic in 3-phase inverter drives. IC Role / Device Role / Timing Role: Half-wave rectifier feeding linear regulator or buck converter for isolated 15V/24V rails. Use Value: 10µA IR at 800V prevents standby current leakage that could disrupt low-power sleep modes. | Use Scenario: Input bridge rectifier in constant-current LED drivers for street lighting (100–200W). IC Role / Device Role / Timing Role: Primary rectification element feeding passive PFC network and buck controller. Use Value: DO-201AD axial leads allow direct mounting to metal-core PCBs for thermal conduction in high-ambient outdoor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PR3006G | Same VRRM (800V), Trr = 125ns, VF = 1.25V, DO-201AD package | Lower Trr and VF reduce switching and conduction loss in high-efficiency designs | Preferred for new designs requiring <130ns Trr and tighter VF tolerance |
| STTH3R08 | VRRM = 800V, Trr = 100ns, VF = 1.2V, TO-220AC package | Higher thermal mass enables 3.0A at 100°C ambient but requires heatsink mounting | Used where board space allows TO-220 and higher ambient operation is required |
Compared with PR3006G and STTH3R08, FR306-T offers proven reliability in legacy through-hole power supplies but lacks the sub-130ns Trr and enhanced thermal performance of newer alternatives-making it suitable for cost-sensitive replacements where existing DO-201AD footprint must be retained.
Availability
FR306-T is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, uninterruptible power supplies (UPS), motor drive auxiliary supplies, and LED driver input stages requiring stable component supply and long-term obsolescence management.
Supply support for FR306-T 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, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the U.S.
The FR30x series belongs to Diodes' fast recovery rectifier product line, engineered specifically for high-reliability AC/DC front-end rectification in industrial and computing power systems where low Trr and stable IR are critical.
FAQ
What is the maximum junction temperature for FR306-T?
The FR306-T has an operating junction temperature range of –65°C to +175°C. Its absolute maximum TJ is 175°C, and thermal derating begins at 75°C ambient when operating at full 3.0A average forward current with 9.5mm lead length. Exceeding this limit risks accelerated parametric drift and premature failure.
Can FR306-T replace FR305 or FR307 in a design?
No-FR306-T is rated for 800V VRRM, while FR305 is 600V and FR307 is 1000V. Substituting FR306-T for FR305 risks overvoltage stress in 600V-class circuits, and using it in place of FR307 may compromise safety margin in 1000V applications. Each part is optimized for its specific voltage grade and must be selected per circuit blocking requirements.
Is FR306-T RoHS compliant and halogen-free?
Yes-FR306-T meets RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. The DO-201AD package uses brominated flame-retardant-free epoxy and lead-free solderable terminals, verified in Diodes Incorporated's material declarations (Doc ID: DIODES_RoHS_Halogen_Free_Status_FR30x).
Does FR306-T require a heatsink in typical applications?
No-FR306-T is rated for 3.0A average forward current at 75°C ambient with 9.5mm lead length and no external heatsink. Thermal performance relies on PCB copper area and lead conduction; adding a heatsink is unnecessary unless ambient exceeds 75°C or I(AV) exceeds 2.5A continuously in enclosed environments.
FR306-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 800 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 500 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 800 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -65°C ~ 175°C
FR306-T FAQ
1.How can I place an order for FR306-T through Aetrix?
Please submit a Request for Quotation (RFQ) for FR306-T 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 FR306-T reliable?
The price and inventory of FR306-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FR306-T is usually 5 days.
3.What payment methods are accepted for FR306-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FR306-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FR306-T?
FR306-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FR306-T 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 FR306-T?
For technical support, including FR306-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FR306-T requirements.
6.How does Aetrix verify that FR306-T is sourced from the original manufacturer or authorized distributors?
All FR306-T 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 FR306-T meets industry standards.
7.What is the process for return or replacement of FR306-T?
All FR306-T units undergo pre-shipment inspection (PSI). If there is an issue with FR306-T, 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 FR306-T part is unused and in its original packaging.
Return procedure for FR306-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
FR306-T 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
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
