My Inquiry
My Account
Taiwan Semiconductor Corporation SF21GHR0G
- Part No.:
- SF21GHR0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SF21GHR0G.pdf
- Description:
- DIODE GEN PURP 50V 2A DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,287
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SF21GHR0G from Taiwan Semiconductor is a 2 A, 50 V super fast recovery rectifier diode in DO-204AC (DO-15) package, featuring 35 ns reverse recovery time, 0.95 V forward voltage at 2 A, and AEC-Q101 qualification for automotive-grade reliability. It serves as a freewheeling or output rectifier in high-frequency DC/DC converters.
For engineers reviewing the SF21GHR0G datasheet, SF21GHR0G pinout, SF21GHR0G application, or SF21GHR0G equivalent, key selection criteria include its 50 V VRRM rating, 50 A IFSM surge capability, TJ = –55°C to +150°C operating range, and RoHS/halogen-free compliance for automotive and industrial power supplies.
Technical Context
This device is a single-die, glass-passivated silicon junction rectifier optimized for switching-mode power conversion. Its super fast recovery (trr ≤ 35 ns) minimizes switching losses, while low VF (0.95 V @ 2 A, 25°C) reduces conduction loss in high-duty-cycle applications.
The DO-204AC package provides robust thermal performance with RθJA = 65°C/W and RθJC = 16°C/W, enabling reliable operation up to 150°C junction temperature. Cathode band polarity marking ensures unambiguous PCB layout integration in high-reliability designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse voltage; defines safe blocking capability in 50 V rail applications |
| IF | 2 A - Continuous forward current rating; supports sustained 2 A DC output in compact converters |
| IFSM | 50 A - Non-repetitive surge current; withstands 8.3 ms half-sine surges during startup or fault events |
| trr | 35 ns - Reverse recovery time; enables efficient operation at >100 kHz switching frequencies |
| VF @ 2 A | 0.95 V - Forward voltage drop at rated current; directly determines conduction loss and thermal rise |
| TJ max | +150 °C - Maximum junction temperature; allows operation in under-hood or enclosed industrial environments |
| CJ | 40 pF - Junction capacitance at 1 MHz, 4 V; impacts high-frequency noise and EMI filter design |
Pinout & Package
DO-204AC (DO-15) axial-leaded package with cathode indicated by a painted band. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward current entry point | Connected to lower-potential node (e.g., switch node or ground return) in freewheeling path |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to output rail or positive bus; blocks reverse voltage up to 50 V |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power electronics per stress test requirements (HTOL, TC, HAST, etc.) |
| Glass passivated junction | Enhances moisture resistance and long-term reliability in humid or thermally cycled environments |
| Low VF (0.95 V @ 2 A) | Reduces power dissipation by ~0.3 W vs. typical 1.25 V diodes at same current, lowering heatsink demand |
| Super fast trr (≤35 ns) | Minimizes reverse recovery charge (Qrr), reducing switching loss and EMI in high-frequency SMPS |
| RoHS & halogen-free | Complies with IEC 61249-2-21; suitable for green manufacturing and export-regulated markets |
Applications
| Automotive DC/DC Converters | Industrial Switch-Mode Power Supplies |
|---|---|
Use Scenario: 12 V to 5 V/3.3 V buck converter in engine control unit (ECU) or ADAS camera module. IC Role / Device Role / Timing Role: Output rectifier handling continuous 2 A load with transient surges up to 50 A. Use Value: AEC-Q101 qualification and 150°C TJ rating ensure functional safety compliance and extended lifetime under hood. | Use Scenario: Secondary-side rectification in 24 V input industrial PLC power module. IC Role / Device Role / Timing Role: Freewheeling diode across MOSFET switch in synchronous or quasi-resonant topology. Use Value: 35 ns trr and low VF enable >200 kHz operation with <1.5 W conduction+switching loss at full load. |
| Consumer AC/DC Adapters | Telecom Point-of-Load Modules |
Use Scenario: Output rectifier in compact 5 V/2 A wall adapter using flyback topology. IC Role / Device Role / Timing Role: Primary-side snubber clamp or secondary-side freewheeling path. Use Value: DO-204AC footprint allows direct replacement of legacy 1N400x series with 3× faster recovery and 25% lower VF. | Use Scenario: Isolated DC/DC brick supplying 12 V to FPGA core logic in base station radio unit. IC Role / Device Role / Timing Role: High-reliability output rectifier in multi-kW distributed power architecture. Use Value: 50 A IFSM and 65°C/W RθJA support derated operation without forced air, simplifying thermal design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2R06 | VRRM = 60 V, VF = 0.97 V @ 2 A, trr = 30 ns, DO-204AL (DO-41) package | Higher trr speed but different package; requires PCB pad revision | Preferred where 30 ns trr is critical and board layout allows DO-41 footprint |
| ON Semi MUR220 | VRRM = 200 V, VF = 0.93 V @ 2 A, trr = 35 ns, DO-204AC (DO-15) package | Higher voltage rating; over-spec'd for 50 V systems but pin-compatible | Use when future-proofing against voltage transients or shared BOM across multiple VRRM variants |
Compared with STTH2R06 and MUR220, SF21GHR0G offers optimal balance of 50 V rating, AEC-Q101 qualification, and DO-204AC compatibility-making it the preferred choice for cost-sensitive, automotive-qualified 12 V system rectification without layout change.
Availability
SF21GHR0G is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial switch-mode power supplies, and consumer AC/DC adapters requiring stable component supply and AEC-Q101 compliance.
Supply support for SF21GHR0G 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 diodes, and MOSFETs for industrial and automotive markets.
The SF21GHR0G belongs to TSC's SF2xG super fast rectifier family, engineered specifically for high-efficiency, high-reliability power conversion in automotive and industrial environments where low VF, fast trr, and AEC-Q101 validation are mandatory.
FAQ
What is the peak repetitive reverse voltage rating of SF21GHR0G?
The SF21GHR0G has a peak repetitive reverse voltage (VRRM) rating of 50 V. This means it can reliably block up to 50 V in reverse bias without breakdown under normal operating conditions. The value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version H2105), and applies across the full operating temperature range of –55°C to +150°C.
Is SF21GHR0G qualified for automotive applications?
Yes, SF21GHR0G is AEC-Q101 qualified. The "H" suffix in the ordering code explicitly denotes AEC-Q101 qualification, verified through standardized stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and unbiased highly accelerated stress testing (uHAST). This makes SF21GHR0G suitable for under-hood and safety-critical automotive power modules.
What is the forward voltage drop of SF21GHR0G at 2 A and 25°C?
The forward voltage drop (VF) of SF21GHR0G is 0.95 V at IF = 2 A and TJ = 25°C, as specified in the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) to avoid self-heating effects. At higher junction temperatures, VF decreases slightly due to the negative temperature coefficient of silicon PN junctions.
Does SF21GHR0G have a defined reverse recovery time?
Yes, SF21GHR0G has a maximum reverse recovery time (trr) of 35 ns, tested at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This parameter is critical for minimizing switching losses in high-frequency converters. The trr value is consistent across the SF21G–SF24G subgroup and is validated per JEDEC standards in the official Taiwan Semiconductor characterization data.
What package type does SF21GHR0G use, and is it lead-free?
SF21GHR0G uses the DO-204AC (DO-15) axial-leaded package with pure tin-plated leads. It is fully RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound meets UL 94V-0 flammability rating, and terminals are solderable per J-STD-002, confirming full lead-free process compatibility for modern reflow and hand-soldering assembly.
SF21GHR0G 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):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 50 V
- Capacitance @ Vr, F:
- 40pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SF21GHR0G FAQ
1.How can I place an order for SF21GHR0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SF21GHR0G 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 SF21GHR0G reliable?
The price and inventory of SF21GHR0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF21GHR0G is usually 5 days.
3.What payment methods are accepted for SF21GHR0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF21GHR0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF21GHR0G?
SF21GHR0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF21GHR0G 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 SF21GHR0G?
For technical support, including SF21GHR0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF21GHR0G requirements.
6.How does Aetrix verify that SF21GHR0G is sourced from the original manufacturer or authorized distributors?
All SF21GHR0G 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 SF21GHR0G meets industry standards.
7.What is the process for return or replacement of SF21GHR0G?
All SF21GHR0G units undergo pre-shipment inspection (PSI). If there is an issue with SF21GHR0G, 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 SF21GHR0G part is unused and in its original packaging.
Return procedure for SF21GHR0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SF21GHR0G 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…
