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Taiwan Semiconductor Corporation RS2KFSH
- Part No.:
- RS2KFSH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-128
- Datasheet:
-
RS2KFSH.pdf
- Description:
- 500NS, 2A, 800V, FAST RECOVERY R
- Quantity:
- Payment:
- Shipping:
Inventory:28,000
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Product details
Overview
RS2KFSH from Taiwan Semiconductor is a 2 A, 800 V fast recovery surface-mount rectifier in SOD-128 package, featuring 500 ns reverse recovery time, 1.06 V forward voltage at 2 A/25°C, and AEC-Q101 qualification for automotive-grade reliability. It serves as a freewheeling or snubber diode in DC/DC converters where high efficiency and thermal robustness are required.
For engineers reviewing the RS2KFSH datasheet, RS2KFSH pinout, RS2KFSH application, or RS2KFSH equivalent, key selection criteria include its 800 V VRRM, 175 °C maximum junction temperature, low-profile SOD-128 footprint, and verified performance under 125 °C operating conditions with <1.05 V VF.
Technical Context
The RS2KFSH employs a glass-passivated silicon die optimized for fast switching and low conduction loss. Its 500 ns trr enables operation in high-frequency DC/DC topologies, while the 16 °C/W RθJL supports efficient heat transfer to PCB copper pads.
Designed for automotive and industrial power supplies, it maintains stable reverse leakage (<40 µA at 125 °C) and exhibits predictable forward voltage drop across temperature (0.93–1.06 V at 25 °C; 0.93 V at 125 °C), enabling accurate thermal modeling and derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Maximum repetitive reverse voltage; defines safe blocking capability in 400–600 V bus applications with margin. |
| IF | 2 A - Continuous forward current rating; supports sustained load in compact DC/DC converter outputs. |
| trr | 500 ns - Reverse recovery time; enables use in >100 kHz switching circuits without excessive switching loss. |
| VF @ 2 A, 25°C | 1.06 V - Forward voltage drop; determines conduction loss (2.12 W at full load) and thermal design baseline. |
| TJ max | 175 °C - Maximum junction temperature; allows operation in under-hood automotive environments with minimal derating. |
| RθJL | 16 °C/W - Junction-to-lead thermal resistance; enables direct thermal path to PCB copper, critical for SMT thermal management. |
| CJ | 10 pF @ 1 MHz, 4 V - Junction capacitance; impacts high-frequency noise coupling and snubber sizing in flyback designs. |
Pinout & Package
Package: SOD-128 - Low-profile, surface-mount plastic package with matte tin-plated leads, moisture sensitivity level 1 (J-STD-020), and UL 94V-0 rated molding compound. Cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter); must handle 2 A continuous and 140 A surge (1 ms). |
| Cathode | Forward current exit / reverse blocking terminal | Connected to higher-potential rail (e.g., output capacitor positive); carries full reverse voltage up to 800 V. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements - enables use in engine control, ADAS, and body electronics without additional qualification. |
| Glass passivated junction | Enhances long-term reliability and humidity resistance - critical for under-hood and industrial outdoor deployments. |
| Low profile SOD-128 | Height ≤0.9 mm - enables ultra-thin power modules and space-constrained PCB layouts in portable and automotive ECUs. |
| 175 °C junction rating | Supports full 2 A current at ambient up to 125 °C with appropriate PCB copper area - reduces need for heatsinks in sealed enclosures. |
| Moisture sensitivity level 1 | No bake requirement before reflow - simplifies manufacturing and eliminates risk of popcorning during assembly. |
Applications
| Freewheeling Diode in Buck Converters | Snubber Network in Flyback SMPS |
|---|---|
Use Scenario: Used across synchronous rectifier or MOSFET switch in step-down DC/DC converters powering infotainment systems. IC Role / Device Role / Timing Role: Freewheeling diode providing current path during high-side switch off-time; critical for energy recycling and voltage regulation stability. Use Value: 500 ns trr minimizes reverse recovery charge (Qrr), reducing switching loss and EMI generation at 200–500 kHz frequencies. | Use Scenario: Placed across primary-side MOSFET in isolated flyback converters for EV onboard chargers. IC Role / Device Role / Timing Role: Snubber diode clamping voltage spikes during MOSFET turn-off; absorbs inductive energy from transformer leakage inductance. Use Value: 800 V VRRM and 175 °C TJ rating ensure reliable clamping under transient overvoltage and high-temperature operation. |
| Automotive DC/DC Power Supply | Industrial 24 V Input Converter |
Use Scenario: Output rectification in 12 V → 5 V/3.3 V DC/DC modules for ADAS camera modules and radar sensors. IC Role / Device Role / Timing Role: Main output rectifier handling continuous 2 A load; operates in thermally constrained plastic housings near heat-generating processors. Use Value: AEC-Q101 qualification and 16 °C/W RθJL enable stable operation without forced air cooling, meeting ASIL-B system requirements. | Use Scenario: Input-stage rectification in industrial programmable logic controller (PLC) power supplies accepting 24 V DC input. IC Role / Device Role / Timing Role: Input protection and polarity correction diode; withstands reverse transients and brownout recovery events. Use Value: 140 A IFSM (1 ms) and <40 µA IR at 125 °C ensure survivability during line surges and extended high-temp operation in factory 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 |
|---|---|---|---|
| STTH2R08 | Same 2 A / 800 V rating; 150 ns trr; TO-277 package (larger footprint, higher RθJA) | Better high-frequency performance but requires larger PCB area and less thermal efficiency on standard FR4 | Prefer when trr <200 ns is mandatory and board space permits; avoid if SOD-128 footprint or AEC-Q101 is required. |
| ON Semi MUR280 | 2 A / 800 V; 75 ns trr; DO-214AC package; not AEC-Q101 qualified | Superior switching speed but lacks automotive qualification and has higher RθJA (80 °C/W vs 73 °C/W) | Select for cost-sensitive industrial designs where AEC-Q101 is unnecessary and faster recovery is prioritized over thermal performance. |
Compared with STTH2R08 and MUR280, the RS2KFSH uniquely balances AEC-Q101 compliance, SOD-128 space efficiency, and 500 ns trr suitable for 200–300 kHz automotive DC/DC converters - making it optimal where qualification, size, and thermal management are jointly constrained.
Availability
RS2KFSH is available at Aetrix Electronics and suitable for automotive power conversion, industrial DC/DC modules, and embedded sensor supply designs requiring stable component supply, AEC-Q101 assurance, and SMT manufacturability.
Supply support for RS2KFSH 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, specializing in power rectifiers, TVS devices, and automotive-qualified components.
The RS2KFSH belongs to TSC's RS2xFSH fast recovery rectifier family, engineered specifically for high-reliability automotive and industrial power conversion where compact size, thermal resilience, and AEC-Q101 compliance are mandatory.
FAQ
What is the peak repetitive reverse voltage rating for RS2KFSH?
The RS2KFSH has a peak repetitive reverse voltage (VRRM) rating of 800 V. This value is explicitly specified in the Absolute Maximum Ratings table for the RS2KFSH variant and defines the maximum reverse-biased voltage the device can block repeatedly without breakdown. It is validated across temperature and forms the basis for safe operating margin in 400–600 V nominal bus applications.
Is RS2KFSH qualified for automotive applications?
Yes, RS2KFSH is AEC-Q101 qualified, as confirmed in the FEATURES section of the official datasheet. This qualification covers stress tests including HTGB, HTRB, TCT, and mechanical shock, verifying suitability for automotive powertrain, chassis, and body electronics. The RS2KFSH shares this qualification with the full RS2xFSH series.
What is the forward voltage of RS2KFSH at 2 A and 125 °C?
The forward voltage (VF) of RS2KFSH is 0.93 V at 2 A and 125 °C, per the ELECTRICAL SPECIFICATIONS table. This lower VF at elevated temperature reflects positive temperature coefficient behavior and directly reduces conduction loss in high-ambient environments such as engine compartments.
Does RS2KFSH have a defined reverse recovery time?
Yes, RS2KFSH has a maximum reverse recovery time (trr) of 500 ns, measured at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This value is explicitly listed in the Electrical Specifications table for RS2KFSH and RS2MFSH variants and is critical for estimating switching losses in high-frequency power converters.
What package type does RS2KFSH use and what are its key mechanical attributes?
RS2KFSH uses the SOD-128 package, per the MECHANICAL DATA and ORDERING INFORMATION sections. Key attributes include: low profile (≤0.9 mm height), matte tin-plated leads compliant with J-STD-002, moisture sensitivity level 1 (no bake required), UL 94V-0 flammability rating, and JEDEC DO-221AD outline compliance. Polarity is marked by a cathode band.
RS2KFSH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-128
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 800 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 500 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 800 V
- Capacitance @ Vr, F:
- 10pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-128
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS2KFSH FAQ
1.How can I place an order for RS2KFSH through Aetrix?
Please submit a Request for Quotation (RFQ) for RS2KFSH 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 RS2KFSH reliable?
The price and inventory of RS2KFSH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS2KFSH is usually 5 days.
3.What payment methods are accepted for RS2KFSH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS2KFSH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS2KFSH?
RS2KFSH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS2KFSH 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 RS2KFSH?
For technical support, including RS2KFSH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS2KFSH requirements.
6.How does Aetrix verify that RS2KFSH is sourced from the original manufacturer or authorized distributors?
All RS2KFSH 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 RS2KFSH meets industry standards.
7.What is the process for return or replacement of RS2KFSH?
All RS2KFSH units undergo pre-shipment inspection (PSI). If there is an issue with RS2KFSH, 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 RS2KFSH part is unused and in its original packaging.
Return procedure for RS2KFSH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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