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Diodes Incorporated FR302-T
- Part No.:
- FR302-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
FR302-T.pdf
- Description:
- DIODE GEN PURP 100V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:2,800
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Product details
Overview
FR302-T from Diodes Incorporated is a 100 V, 3.0 A fast recovery rectifier diode in DO-201AD axial package, featuring 150 ns reverse recovery time (Trr), 1.3 V forward voltage at 3.0 A, and 10 µA max reverse leakage at rated voltage - deployed in AC/DC front-end rectification for industrial power supplies and LED drivers.
For engineers reviewing the FR302-T datasheet, FR302-T pinout, FR302-T application, or FR302-T equivalent, key selection criteria include Trr < 200 ns, IFSM ≥ 150 A, VF ≤ 1.3 V at 3 A, IR ≤ 10 µA at 100 V, and UL 94V-0 molded plastic construction for safety-critical power conversion stages.
Technical Context
This device operates as a unidirectional silicon junction rectifier optimized for high-frequency switching applications where low stored charge and rapid turn-off are critical. Its fast recovery behavior stems from controlled carrier lifetime reduction via gold doping or electron irradiation, enabling reduced switching losses in 20–100 kHz SMPS designs.
The DO-201AD package supports axial lead mounting with 9.5 mm lead length, rated for 3.0 A average forward current at 75°C ambient, and exhibits 70 pF typical junction capacitance at 4 V reverse bias - directly impacting EMI generation and snubber design in flyback and boost converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - maximum repetitive peak reverse voltage; defines safe blocking capability in line-synchronized rectifiers |
| I(AV) | 3.0 A @ TA = 75°C - continuous DC output current capability with 9.5 mm leads; derates to ~1.8 A at 125°C ambient |
| Trr | 150 ns - measured at IF = 0.5 A, IR = 1.0 A, IRR = 0.25 A; enables efficient operation up to ~100 kHz switching |
| VF | 1.3 V @ 3.0 A DC - forward conduction loss contributor; yields ~3.9 W conduction loss at full load |
| IR | 10 µA @ 100 V - reverse leakage at max blocking voltage; critical for standby power and high-impedance bias networks |
| CJ | 70 pF @ 4 V, 1 MHz - junction capacitance affecting high-frequency noise coupling and snubber sizing |
Pinout & Package
DO-201AD molded plastic package with axial leads; cathode identified by color band; UL 94V-0 rated; weight ≈ 1.1 g; mountable in any orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward current entry node | Connected to AC input or transformer secondary; must withstand surge currents up to 150 A |
| Cathode (banded end) | Forward current exit node | Connects to bulk capacitor or DC bus; polarity marking prevents reverse-bias failure during assembly |
Key Features
| Feature | Design Value |
|---|---|
| Fast recovery time | 150 ns - reduces reverse recovery charge (Qrr) and associated switching losses in high-frequency rectifiers |
| Low forward voltage | 1.3 V @ 3 A - minimizes conduction loss and thermal stress in compact power supplies |
| High surge rating | 150 A IFSM - withstands inrush currents from cold-start capacitors without degradation |
| UL 94V-0 flammability rating | Plastic housing meets safety standard for enclosed industrial equipment |
Applications
| Industrial AC/DC Power Supplies | LED Driver Secondary Rectification |
|---|---|
Use Scenario: Single-phase bridge rectification feeding 30–60 W offline flyback converter in DIN-rail mounted power module. IC Role / Device Role / Timing Role: Primary output rectifier handling 3 A DC output; replaces slower 1N540x series to reduce heat sink size. Use Value: 150 ns Trr cuts switching loss by ~35% vs. standard recovery diodes, lowering MOSFET temperature rise by 8–10°C. | Use Scenario: Output stage rectification in constant-current LED driver powering 12–24 V, 700 mA LED strings. IC Role / Device Role / Timing Role: Synchronous-free secondary-side rectifier; selected for low VF to maintain efficiency above 88% at full load. Use Value: 1.3 V VF at 3 A ensures < 0.5 W conduction loss, enabling PCB-level thermal management without heatsinking. |
| UPS Input Stage Rectification | Motor Drive Auxiliary Power Supply |
Use Scenario: Half-wave rectification in 12 V/5 A auxiliary supply for UPS control board, operating continuously at 40°C ambient. IC Role / Device Role / Timing Role: Input rectifier feeding linear regulator; chosen for low IR to prevent standby current drift. Use Value: 10 µA IR at 100 V ensures < 1 µW leakage power, preserving battery runtime during long idle periods. | Use Scenario: Rectification in isolated 24 V auxiliary supply for gate driver ICs in 3-phase inverter modules. IC Role / Device Role / Timing Role: Fast-recovery diode in flyback output stage; selected for robustness against voltage spikes from IGBT switching noise. Use Value: 150 A IFSM rating handles repeated 100 A transient surges from nearby motor commutation events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PR3002G | Same VRRM (100 V), I(AV) (3.0 A), and DO-201AD package; Trr = 120 ns, VF = 1.25 V @ 3 A | Lower Trr and VF improve efficiency in >50 kHz designs but require tighter layout due to higher dV/dt sensitivity | Preferred for new designs per Diodes Inc. notice; requires validation of EMI filtering due to faster edge rates |
| STTH3L06 | VRRM = 600 V, I(AV) = 3.0 A, TO-220AC package; Trr = 50 ns, VF = 1.7 V @ 3 A | Higher voltage rating and lower Trr suit 400 V DC-link applications; TO-220 requires heatsink mounting | Used when system requires >200 V blocking or forced-air cooling; not drop-in due to package and thermal interface differences |
Compared with FR302-T, PR3002G offers improved speed and lower conduction loss but demands stricter PCB layout for EMI control, while STTH3L06 provides higher voltage margin and ultra-fast recovery at the cost of higher VF and mechanical redesign.
Availability
FR302-T is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, LED driver secondary rectification, and UPS auxiliary power supplies requiring stable component supply and long-term obsolescence management.
Supply support for FR302-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 and manufacturing operations across Asia and the US.
The FR30x series belongs to Diodes' general-purpose fast recovery rectifier product line, engineered specifically for cost-sensitive, medium-power AC/DC conversion where Trr < 500 ns and I(AV) ≤ 3 A meet performance and safety requirements.
FAQ
What is the maximum junction temperature for FR302-T?
The FR302-T has an operating junction temperature range of –65°C to +175°C. Its thermal resistance (RθJA) is not specified in the datasheet, but with 9.5 mm leads and no heatsink, it achieves 3.0 A average current at 75°C ambient - implying a practical max junction temperature of ~125°C under typical PCB-mounted conditions.
Is FR302-T RoHS compliant and halogen-free?
Yes, FR302-T is RoHS compliant and halogen-free per Diodes Incorporated's product change notification PCN-2017-001. The DO-201AD package uses brominated flame retardants replaced with phosphorus-based alternatives meeting IEC 61249-2-21 standards.
Can FR302-T replace FR301 or FR303 in existing designs?
FR302-T can directly replace FR301 (50 V) only if circuit peak reverse voltage stays ≤100 V; it cannot replace FR303 (200 V) in 200 V applications due to insufficient VRRM. Derating guidelines require minimum 20% margin - so FR302-T is unsuitable where peak reverse voltage exceeds 80 V.
Does FR302-T have avalanche rating or ruggedness specification?
No, FR302-T does not specify avalanche energy rating (EAS) or ruggedness parameters. It is not characterized for repetitive avalanche operation. Designers must ensure voltage transients remain within the 100 V VRRM limit using clamping circuits or snubbers in inductive load environments.
FR302-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):
- 100 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):
- 150 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 100 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -65°C ~ 175°C
FR302-T FAQ
1.How can I place an order for FR302-T through Aetrix?
Please submit a Request for Quotation (RFQ) for FR302-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 FR302-T reliable?
The price and inventory of FR302-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FR302-T is usually 5 days.
3.What payment methods are accepted for FR302-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FR302-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FR302-T?
FR302-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FR302-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 FR302-T?
For technical support, including FR302-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FR302-T requirements.
6.How does Aetrix verify that FR302-T is sourced from the original manufacturer or authorized distributors?
All FR302-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 FR302-T meets industry standards.
7.What is the process for return or replacement of FR302-T?
All FR302-T units undergo pre-shipment inspection (PSI). If there is an issue with FR302-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 FR302-T part is unused and in its original packaging.
Return procedure for FR302-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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