My Inquiry
My Account
Taiwan Semiconductor Corporation FR157G-T
- Part No.:
- FR157G-T
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
FR157G-T.pdf
- Description:
- 500NS, 1.5A, 1000V, FAST RECOVER
- Quantity:
- Payment:
- Shipping:
Inventory:8,487
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
FR157G-T from Taiwan Semiconductor is a 1.5A, 1000V fast recovery rectifier diode in DO-204AC (DO-15) package, featuring 500 ns reverse recovery time, 1.3 V max forward voltage at 1.5 A, and 50 A surge capability - deployed in high-voltage DC-DC converters and switching inverters.
For engineers reviewing the FR157G-T datasheet, FR157G-T pinout, FR157G-T application, or FR157G-T equivalent, key selection criteria include peak reverse voltage rating, thermal resistance (60 °C/W), junction temperature range (–55 to +150 °C), cathode-band polarity marking, and RoHS/halogen-free compliance for industrial power supply designs.
Technical Context
The FR157G-T is a single-die, glass-passivated silicon PN junction rectifier optimized for high-voltage switching applications. Its 1000 V VRRM and 500 ns trr enable efficient operation in 600–1000 V bus systems where rapid turn-off minimizes switching losses.
It operates across –55 °C to +150 °C junction temperature with 60 °C/W junction-to-ambient thermal resistance, and exhibits low leakage (≤100 µA at 125 °C) and stable capacitance (20 pF at 4 V, 1 MHz), supporting predictable EMI behavior in high-frequency SMPS topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - supports primary-side rectification in offline 800 V DC bus or 600 V AC-input SMPS |
| IF | 1.5 A continuous - rated for sustained conduction in compact 15–25 W power stages |
| IFSM | 50 A (8.3 ms half-sine) - withstands inrush and transient surges without failure |
| trr | 500 ns - reduces switching loss and diode-induced ringing in >50 kHz converters |
| VF | ≤1.3 V at 1.5 A, 25 °C - limits conduction loss to ≤1.95 W under full load |
| RθJA | 60 °C/W - requires minimal PCB copper area for thermal management in DO-15 footprint |
| Junction temp | –55 to +150 °C - enables deployment in sealed industrial enclosures without active cooling |
Pinout & Package
Package: DO-204AC (DO-15), axial leaded, glass-passivated die, cathode indicated by band. Leads are pure tin-plated, J-STD-002 solderable, UL 94V-0 molded compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node) |
| Cathode | Current exit terminal during forward conduction; marked with band | Connected to output rail or filter capacitor positive; polarity critical for correct rectification |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances humidity and contamination resistance for long-term reliability in unsealed environments |
| Low VF (≤1.3 V) | Reduces steady-state power dissipation vs. standard recovery diodes, easing thermal design |
| 500 ns trr | Enables higher switching frequencies without excessive diode switching loss or voltage overshoot |
| RoHS & halogen-free | Meets IEC 61249-2-21 and global environmental compliance requirements for industrial shipments |
Applications
| High-Voltage DC-DC Converter | Switching Inverter Output Stage |
|---|---|
Use Scenario: Isolated 400–1000 V input DC-DC converter for telecom or industrial control power supplies. IC Role / Device Role / Timing Role: Primary-side fast recovery rectifier handling high-voltage, medium-current output rectification. Use Value: 1000 V VRRM and 500 ns trr ensure safe blocking and low-loss commutation under high dv/dt conditions. | Use Scenario: Output freewheeling/anti-parallel path in three-phase motor drive inverters operating up to 690 V AC line. IC Role / Device Role / Timing Role: Freewheeling diode clamping inductive kickback from IGBTs/MOSFETs during PWM dead-time. Use Value: 50 A IFSM and 150 °C TJMAX sustain repeated surge events without thermal runaway. |
| Offline AC-DC Power Supply | Industrial UPS Rectifier Module |
Use Scenario: Bridge rectifier stage in universal-input (85–265 V AC) offline SMPS with PFC front-end. IC Role / Device Role / Timing Role: Secondary-side output rectifier delivering regulated 12–48 V DC after transformer isolation. Use Value: Low 1.3 V VF improves overall efficiency; DO-15 package allows automated through-hole assembly. | Use Scenario: Redundant rectifier bank in 24/48 V DC backup system with battery charging and inverter support. IC Role / Device Role / Timing Role: High-reliability main rectifier handling continuous 1.5 A load and occasional 50 A surge during battery recharge transients. Use Value: –55 to +150 °C operating range and JESD 201 Class 1A whisker resistance ensure field longevity in temperature-cycled environments. |
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 | 1 A, 600 V, 75 ns trr, TO-220AC package | Lower voltage rating and faster recovery, but higher current density and different mounting | Preferred where <600 V systems demand ultra-fast recovery and heatsink attachment is available |
| ON Semi MUR160E | 1 A, 600 V, 60 ns trr, DO-41 package, 1.1 V VF | Higher speed, lower VF, but only 600 V rating and 1 A rating - not drop-in for 1000 V use | Applicable in 400–600 V designs prioritizing efficiency over voltage margin |
Compared with STTH1L06U and MUR160E, the FR157G-T uniquely delivers 1000 V blocking with 1.5 A rating in DO-15 - making it irreplaceable in high-voltage, space-constrained, through-hole rectifier roles where voltage derating to ≥1.5× line peak is required.
Availability
FR157G-T is available at Aetrix Electronics and suitable for high-voltage DC-DC converters, switching inverters, and industrial UPS rectifier modules requiring stable component supply and long-lifecycle availability.
Supply support for FR157G-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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving industrial, computing, and consumer markets since 1979.
The FR15xG-T series is part of TSC's fast recovery rectifier product line, engineered specifically for high-efficiency, high-reliability AC-DC and DC-DC conversion in cost-sensitive, thermally constrained power supplies.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for FR157G-T?
The FR157G-T has a maximum repetitive peak reverse voltage (VRRM) of 1000 V, as confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version B2105). This rating defines its safe blocking capability in high-voltage circuits such as offline SMPS and industrial DC bus interfaces. Exceeding this voltage risks avalanche breakdown and permanent damage to the FR157G-T.
Does FR157G-T have a specified reverse recovery time (trr)?
Yes, the FR157G-T has a reverse recovery time (trr) of 500 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A conditions. This value is explicitly listed in the Electrical Specifications table for FR156G-T and FR157G-T in the datasheet. The 500 ns trr supports efficient operation in switching frequencies up to ~100 kHz without excessive switching loss.
What package type is used for FR157G-T?
The FR157G-T uses the DO-204AC (also known as DO-15) axial-leaded package, as stated in the Mechanical Data and Ordering Information sections. It features glass-passivated construction, pure tin-plated leads compliant with J-STD-002, and UL 94V-0 molding compound. The cathode is marked by a visible band on the body, and the device weighs approximately 0.400 g.
Is FR157G-T RoHS and halogen-free compliant?
Yes, the FR157G-T is RoHS compliant and halogen-free per IEC 61249-2-21, as confirmed in the Features section of the Taiwan Semiconductor datasheet. This compliance applies to all materials including molding compound and lead finish, enabling its use in environmentally regulated industrial and commercial equipment without restriction.
What is the maximum forward voltage (VF) of FR157G-T at rated current?
The maximum forward voltage (VF) of FR157G-T is 1.3 V at IF = 1.5 A and TJ = 25 °C, as specified in the Electrical Specifications table. This value represents worst-case conduction loss under nominal conditions; actual VF decreases slightly at lower temperatures and increases at elevated junction temperatures - a key parameter for thermal and efficiency modeling of the FR157G-T in power supply designs.
FR157G-T 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):
- 1000 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):
- 500 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1000 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
FR157G-T FAQ
1.How can I place an order for FR157G-T through Aetrix?
Please submit a Request for Quotation (RFQ) for FR157G-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 FR157G-T reliable?
The price and inventory of FR157G-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FR157G-T is usually 5 days.
3.What payment methods are accepted for FR157G-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FR157G-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FR157G-T?
FR157G-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FR157G-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 FR157G-T?
For technical support, including FR157G-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FR157G-T requirements.
6.How does Aetrix verify that FR157G-T is sourced from the original manufacturer or authorized distributors?
All FR157G-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 FR157G-T meets industry standards.
7.What is the process for return or replacement of FR157G-T?
All FR157G-T units undergo pre-shipment inspection (PSI). If there is an issue with FR157G-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 FR157G-T part is unused and in its original packaging.
Return procedure for FR157G-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
FR157G-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
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
