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Taiwan Semiconductor Corporation FR151G R0G
- Part No.:
- FR151G R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
FR151G R0G.pdf
- Description:
- DIODE GEN PURP 50V 1.5A DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,618
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Product details
Overview
FR151G from Taiwan Semiconductor is a 1.5A, 50V fast recovery rectifier diode in DO-204AC (DO-15) package, featuring 1.3V max forward voltage at 1.5A, 50A surge capability, and 150ns reverse recovery time - deployed in DC-DC converters and switching-mode power supplies.
For engineers reviewing the FR151G datasheet, FR151G pinout, FR151G application, or FR151G equivalent, key selection criteria include repetitive peak reverse voltage (50V), thermal resistance (60°C/W), junction temperature range (–55°C to +150°C), RoHS/halogen-free compliance, and AEC-Q101 qualification availability.
Technical Context
This single-die fast recovery rectifier uses glass-passivated junction technology to achieve low forward voltage drop and high surge current tolerance. Its 150ns trr enables efficient operation in high-frequency switching topologies up to several hundred kHz.
The device operates across –55°C to +150°C junction temperature with 60°C/W junction-to-ambient thermal resistance. It delivers 1.5A average forward current with 50A non-repetitive surge rating under 8.3ms half-sine conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Avg) | 1.5 A - Sustains continuous conduction in mid-power SMPS output stages |
| VRRM | 50 V - Maximum blocking voltage for low-voltage DC-DC and auxiliary rail applications |
| VF (max) | 1.3 V @ 1.5A, 25°C - Limits conduction loss to ≤1.95W at rated current |
| trr | 150 ns - Enables use in 100–300 kHz switching converters with minimal switching loss |
| IFSM | 50 A - Withstands transient surges during startup or fault conditions |
| RθJA | 60 °C/W - Requires ≤25°C ambient or heatsinking for full 1.5A operation at 150°C TJ |
| IR (max) | 5 µA @ 25°C - Ensures low leakage in high-impedance hold-up or sensing circuits |
Pinout & Package
Package: DO-204AC (DO-15), axial lead, glass-passivated chip, cathode indicated by band. Weight: 0.400 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node) |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; ties to output capacitor positive or load return path |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhances moisture resistance and long-term reliability in humid or automotive environments |
| AEC-Q101 qualified version available (FR151GH) | Validated for automotive-grade stress testing including temperature cycling and HTRB |
| RoHS & halogen-free (IEC 61249-2-21) | Complies with EU environmental directives and supports lead-free reflow soldering |
| Pure tin-plated leads | Ensures solderability per J-STD-002 and eliminates whisker risk per JESD201 Class 2 |
Applications
| DC-DC Converter Output Stage | Switching Mode Inverter Auxiliary Supply |
|---|---|
Use Scenario: Rectifying high-frequency transformer output in isolated buck-derived DC-DC modules delivering 3.3V/5V/12V rails. IC Role / Device Role / Timing Role: Fast recovery rectifier handling 100–250 kHz switching frequency with minimal reverse recovery loss. Use Value: 150ns trr and 1.3V VF reduce conduction and switching losses, improving efficiency by ~1.2% over standard recovery diodes. | Use Scenario: Providing isolated bias supply for gate drivers in three-phase motor inverters. IC Role / Device Role / Timing Role: Secondary-side rectifier in flyback or forward converter powering isolated IGBT/SiC gate driver ICs. Use Value: 50V VRRM and 50A IFSM support robust start-up and short-circuit protection in industrial drive control boards. |
| Automotive Body Control Module (BCM) | Industrial PLC Power Input Protection |
Use Scenario: Reverse polarity and transient protection in 12V battery-fed BCM sub-systems (e.g., lighting, window lift). IC Role / Device Role / Timing Role: Input rectifier and clamp in linear or switching pre-regulator stage. Use Value: AEC-Q101-qualified variant (FR151GH) ensures validated reliability for 15-year automotive service life. | Use Scenario: Input-stage rectification in DIN-rail mounted 24V/48V PLC power supplies exposed to industrial line transients. IC Role / Device Role / Timing Role: Primary rectifier in offline AC-DC front-end or DC input filtering stage. Use Value: 60°C/W RθJA and –55°C to +150°C TJ range enable stable operation in unventilated enclosures up to 70°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L06U (STMicroelectronics) | 1A, 600V, 75ns trr, TO-220AC package | Higher VRRM and faster recovery but lower IF; requires PCB mount and heatsink | Prefer when >100V blocking or <100ns trr needed; not drop-in due to package and current rating |
| 1N4933 (ON Semiconductor) | 1.5A, 200V, 200ns trr, DO-41 package | Same IF but higher VRRM and slower recovery; smaller DO-41 body with higher RθJA | Select for cost-sensitive 200V designs where 50V margin is acceptable; verify thermal derating |
Compared with STTH1L06U and 1N4933, FR151G offers optimal balance of 50V rating, 1.5A current, 150ns speed, and DO-15 manufacturability - making it ideal for compact, cost-efficient low-voltage SMPS where thermal budget and board space are constrained.
Availability
FR151G is available at Aetrix Electronics and suitable for DC-DC converters, switching mode inverters, and general-purpose power rectification requiring stable component supply and long-term industrial sourcing.
Supply support for FR151G 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global industrial, automotive, and consumer markets since 1979.
The FR15xG series targets cost-sensitive, high-volume power conversion applications - emphasizing reliability, thermal robustness, and compatibility with automated assembly processes in DO-15 packaging.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for FR151G?
The FR151G has a VRRM rating of 50 V, meaning it reliably blocks up to 50 V in reverse bias without breakdown. This value is specified per JEDEC standards and verified across temperature and lifetime stress tests. The FR151G is part of the FR151G–FR157G family, where '1' denotes the 50 V grade. Exceeding this voltage risks avalanche failure or premature degradation.
Does FR151G have AEC-Q101 qualification?
The base FR151G is not AEC-Q101 qualified; however, the variant FR151GH is fully AEC-Q101 qualified and shares identical electrical parameters and DO-15 packaging. FR151GH undergoes additional stress testing including temperature cycling, high-temperature reverse bias, and unbiased highly accelerated stress testing - required for automotive under-hood and body electronics applications.
What is the thermal resistance (RθJA) of FR151G and how does it affect layout?
The FR151G has a junction-to-ambient thermal resistance of 60°C/W under standard JEDEC test conditions (single device on 1-inch² FR-4 board, 2 oz copper). At 1.5A and 1.3V VF, power dissipation reaches ~1.95W, implying a 117°C rise above ambient - so operation above 33°C ambient requires thermal relief (e.g., wider copper pours, thermal vias, or forced air). Layout must avoid enclosing the DO-15 leads in tight traces.
How does the 150ns reverse recovery time (trr) of FR151G impact switching efficiency?
The 150ns trr of FR151G directly reduces switching losses in hard-switched topologies operating between 100 kHz and 300 kHz. Compared to standard recovery diodes (>1 µs trr), FR151G minimizes reverse recovery charge (Qrr), lowering peak current spikes and EMI generation. This enables higher efficiency in compact flyback and forward converters where diode conduction and recovery dominate loss budgets.
Is FR151G compatible with lead-free reflow soldering processes?
Yes, FR151G features pure tin-plated leads compliant with J-STD-002 for solderability and meets JESD201 Class 2 whisker resistance requirements. Its molding compound is UL 94V-0 rated and halogen-free per IEC 61249-2-21, supporting standard Pb-free reflow profiles (peak 260°C, 10s max). No special pre-bake or flux is required for standard SMT assembly lines.
FR151G R0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AC, DO-15, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 1.5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 1.5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 150 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 50 V
- Capacitance @ Vr, F:
- 20pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
- Operating Temperature - Junction:
- -55°C ~ 150°C
FR151G R0G FAQ
1.How can I place an order for FR151G R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for FR151G R0G 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 FR151G R0G reliable?
The price and inventory of FR151G R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FR151G R0G is usually 5 days.
3.What payment methods are accepted for FR151G R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FR151G R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FR151G R0G?
FR151G R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FR151G R0G 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 FR151G R0G?
For technical support, including FR151G R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FR151G R0G requirements.
6.How does Aetrix verify that FR151G R0G is sourced from the original manufacturer or authorized distributors?
All FR151G R0G 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 FR151G R0G meets industry standards.
7.What is the process for return or replacement of FR151G R0G?
All FR151G R0G units undergo pre-shipment inspection (PSI). If there is an issue with FR151G R0G, 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 FR151G R0G part is unused and in its original packaging.
Return procedure for FR151G R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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