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Taiwan Semiconductor Corporation FR155G
- Part No.:
- FR155G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
FR155G.pdf
- Description:
- DIODE GEN PURP 600V 1.5A DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,990
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Product details
Overview
FR155G from Taiwan Semiconductor is a 1.5A, 600V fast recovery rectifier diode in DO-204AC (DO-15) package, featuring 250 ns reverse recovery time, 1.3 V max forward voltage at 1.5 A, and 50 A surge current capability. It serves as the primary output rectifier in high-frequency switching power supplies.
For engineers reviewing the FR155G datasheet, FR155G pinout, FR155G application, or FR155G equivalent, key selection criteria include its 600 V repetitive peak reverse voltage, AEC-Q101 qualification option (FR155GH), thermal resistance of 60 °C/W, and suitability for DC-DC converters requiring low conduction loss and fast transient response.
Technical Context
The FR155G employs a glass-passivated PN junction optimized for fast recovery in high-frequency switching topologies. Its 250 ns trr enables efficient operation in SMPS operating up to several hundred kHz while maintaining low reverse leakage (≤5 µA at 25°C, ≤100 µA at 125°C).
Thermally, it supports continuous operation from –55°C to +150°C junction temperature with a 60 °C/W junction-to-ambient thermal resistance. The DO-204AC package uses pure tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in flyback or forward converter secondary side |
| IF | 1.5 A - Continuous average forward current; sets baseline conduction rating for thermal design |
| IFSM | 50 A - Non-repetitive surge current (8.3 ms half-sine); withstands startup/short-circuit transients |
| trr | 250 ns - Reverse recovery time at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; determines switching loss and EMI in hard-switched converters |
| VF (max) | 1.3 V - Forward voltage at 1.5 A and 25°C; directly impacts conduction loss and thermal rise |
| RθJA | 60 °C/W - Junction-to-ambient thermal resistance; used to calculate temperature rise under PCB-mounted conditions |
| IR (max) | 5 µA @ 25°C - Reverse leakage at rated VR; critical for standby power and high-impedance bias networks |
Pinout & Package
DO-204AC (DO-15) axial-leaded package with cathode band indicating the cathode terminal. Leads are pure tin-plated, solderable per J-STD-002, and meet UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., transformer secondary center-tap or ground return path) |
| Cathode | Forward current exit point | Connected to output filter capacitor positive terminal; marked by visible band on body |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability and moisture resistance without hermetic sealing |
| Fast recovery (250 ns) | Reduces switching losses and improves efficiency in 100–500 kHz SMPS designs |
| Low VF (1.3 V max) | Lowers I²R conduction loss, easing thermal management in compact power supplies |
| AEC-Q101 qualified variant available | Enables use in automotive infotainment and body electronics where stress testing is mandated |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and environmental compliance requirements for global manufacturing |
Applications
| DC-DC Converter Output Rectification | Switching Mode Inverter Auxiliary Supply |
|---|---|
Use Scenario: Secondary-side rectification in isolated 12 V/1.5 A flyback converter powering industrial PLC I/O modules. IC Role / Device Role / Timing Role: Fast recovery rectifier handling high-frequency AC-to-DC conversion with minimal reverse recovery loss. Use Value: 250 ns trr and 1.3 V VF reduce total power loss by ~12% vs. standard recovery diodes, improving thermal margin at full load. | Use Scenario: Bias supply rectification in 3-phase motor drive gate driver IC auxiliary rails. IC Role / Device Role / Timing Role: High-surge-capable rectifier delivering stable 15 V bias to isolated gate drivers during inverter switching events. Use Value: 50 A IFSM withstands repeated gate charge/discharge surges without degradation, ensuring long-term reliability. |
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning Power |
Use Scenario: Input rectification for 5 V/1 A buck-derived supply in AEC-Q101-compliant BCM subassembly. IC Role / Device Role / Timing Role: Primary AC input rectifier in offline auxiliary supply meeting automotive temperature and lifetime requirements. Use Value: Optional AEC-Q101 qualification (FR155GH) and –55°C to +150°C TJ range support extended vehicle life cycle validation. | Use Scenario: Local 3.3 V rail generation for analog front-end sensors in factory automation equipment. IC Role / Device Role / Timing Role: Low-leakage rectifier feeding linear regulator input, minimizing standby current in always-on sensor nodes. Use Value: 5 µA max IR at 25°C ensures <1 µA contribution to system quiescent current, preserving battery life in remote deployments. |
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) | Same 1.5 A / 600 V rating; 150 ns trr, 1.7 V VF max, SOD-123FL package | Surface-mount only; unsuitable for through-hole legacy designs or high-surge mechanical stress environments | Select when board space is constrained and automated assembly is used; verify layout clearance for higher VF-induced heating |
| ES1J (ON Semiconductor) | 1 A / 600 V; 35 ns trr, 1.7 V VF max, DO-214AA (SMA) package | Lower current rating limits use to ≤1 A loads; faster trr benefits ultra-high-frequency designs but increases cost | Choose for compact SMT layouts needing <50 ns recovery; derate current by 33% versus FR155G's 1.5 A rating |
Compared with STTH1L06U and ES1J, the FR155G offers superior surge robustness (50 A vs. 30 A and 30 A), through-hole mechanical stability, and lower conduction loss at 1.5 A-making it optimal for cost-sensitive, thermally demanding, or legacy-compatible power supplies.
Availability
FR155G is available at Aetrix Electronics and suitable for DC-DC converters, switching mode inverters, and general-purpose industrial power supplies requiring stable component supply and long-lifecycle availability.
Supply support for FR155G 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 semiconductor manufacturer specializing in discrete power devices, including rectifiers, TVS diodes, and MOSFETs, with global distribution and automotive-grade process control.
The FR15xG series was designed specifically for high-efficiency, high-reliability AC/DC and DC/DC power conversion in industrial, computing, and automotive auxiliary power applications.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for FR155G?
The FR155G has a VRRM rating of 600 V, meaning it can safely block up to 600 V of reverse voltage in repetitive operation. This value is fixed per the FR155G designation within the FR151G–FR157G family and is confirmed in the Absolute Maximum Ratings table. Exceeding this voltage risks avalanche breakdown and permanent damage to the FR155G junction.
Does FR155G have AEC-Q101 qualification?
The base FR155G is not AEC-Q101 qualified; however, the variant FR155GH is explicitly qualified per AEC-Q101. The "H" suffix denotes automotive stress testing compliance. For automotive applications requiring qualification, FR155GH must be specified-FR155G alone does not carry this certification, and no derivative testing data applies to the non-H version.
What is the reverse recovery time (trr) of FR155G and how is it measured?
The FR155G has a reverse recovery time (trr) of 250 ns, measured under conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, per the Electrical Specifications table. This parameter reflects the time required for the FR155G to transition from forward conduction to reverse blocking state and directly affects switching loss in high-frequency converters.
Can FR155G replace FR154G or FR156G in an existing design?
FR155G is not a direct replacement for FR154G (400 V) or FR156G (800 V) due to differing VRRM ratings. Substituting FR155G for FR154G risks overvoltage failure; substituting for FR156G sacrifices reverse voltage margin. The FR155G must only be used where 600 V blocking is both sufficient and compliant with safety margins defined in the original design's FR155G specification.
What package type and lead finish does FR155G use?
The FR155G uses the DO-204AC (DO-15) axial-leaded package with pure tin-plated leads. This finish meets J-STD-002 solderability requirements and JESD201 Class 2 whisker resistance. The cathode is marked by a visible band on the epoxy body, and the package complies with UL 94V-0 flammability standards.
FR155G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AC, DO-15, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 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):
- 250 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 600 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
FR155G FAQ
1.How can I place an order for FR155G through Aetrix?
Please submit a Request for Quotation (RFQ) for FR155G 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 FR155G reliable?
The price and inventory of FR155G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FR155G is usually 5 days.
3.What payment methods are accepted for FR155G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FR155G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FR155G?
FR155G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FR155G 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 FR155G?
For technical support, including FR155G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FR155G requirements.
6.How does Aetrix verify that FR155G is sourced from the original manufacturer or authorized distributors?
All FR155G 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 FR155G meets industry standards.
7.What is the process for return or replacement of FR155G?
All FR155G units undergo pre-shipment inspection (PSI). If there is an issue with FR155G, 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 FR155G part is unused and in its original packaging.
Return procedure for FR155G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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