My Inquiry
My Account
Taiwan Semiconductor Corporation SF25GH
- Part No.:
- SF25GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SF25GH.pdf
- Description:
- DIODE GEN PURP 300V 2A DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SF25GH from Taiwan Semiconductor is a 2 A, 300 V super fast recovery rectifier diode in DO-204AC (DO-15) package, featuring 35 ns reverse recovery time, 1.30 V forward voltage at 2 A and 25°C, and 50 A surge current capability. It serves as a freewheeling or output rectifier in high-frequency switching power supplies.
For engineers reviewing the SF25GH datasheet, SF25GH pinout, SF25GH application, or SF25GH equivalent, key selection criteria include its 300 V repetitive peak reverse voltage, AEC-Q101 qualification, low VF/low trr trade-off, thermal resistance (RθJA = 65°C/W), and DO-15 mechanical compatibility with legacy board layouts.
Technical Context
This super fast rectifier uses a glass-passivated PN junction optimized for high-efficiency DC-DC conversion. Its 35 ns reverse recovery time enables operation in 100–500 kHz switching topologies while limiting switching losses.
The device supports continuous forward current up to 2 A at 75°C ambient, derates linearly to zero at 150°C junction temperature, and withstands 50 A non-repetitive surge (8.3 ms half-sine) - critical for handling inrush and transient overloads in SMPS outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 300 V - blocks up to 300 V repetitive reverse voltage, suitable for 24 V–48 V output rails with 2× safety margin |
| IF | 2 A - rated average forward current at TA = 75°C, defines steady-state conduction capability |
| IFSM | 50 A - peak non-repetitive surge current (8.3 ms), supports startup and fault transients |
| VF | 1.30 V @ 2 A, 25°C - low forward drop reduces conduction loss and heatsink requirements |
| trr | 35 ns - ultra-fast recovery minimizes switching loss and EMI in high-frequency converters |
| RθJA | 65°C/W - junction-to-ambient thermal resistance determines required PCB copper area for thermal management |
| Junction Temp | −55°C to +150°C - wide operating range supports automotive under-hood and industrial environments |
Pinout & Package
DO-204AC (DO-15) axial-leaded package with cathode band marking; 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 (unmarked 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 higher-potential rail (e.g., output capacitor positive or inductor output); polarity must be observed to prevent breakdown |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per stress test conditions |
| Glass-passivated junction | Enhances moisture resistance and long-term stability of reverse leakage (<5 µA at 25°C, <100 µA at 125°C) |
| Low trr (35 ns) | Enables efficient operation in >200 kHz flyback and forward converters without excessive ringing or snubber loss |
| RoHS & halogen-free | Complies with IEC 61249-2-21; supports environmentally regulated industrial and automotive manufacturing |
| UL 94V-0 molding compound | Self-extinguishing encapsulant meets fire-safety requirements for enclosed power systems |
Applications
| DC-DC Converter Output Rectification | Switching Mode Inverter Freewheeling |
|---|---|
Use Scenario: Used as secondary-side rectifier in isolated 24 V input, 5 V/3 A flyback converter for industrial PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional current valve conducting during transformer reset phase; reverse recovery timing directly impacts switching node voltage overshoot. Use Value: 35 ns trr and 1.30 V VF reduce total power loss by ~18% vs. standard fast rectifiers, lowering thermal load on compact PCB layout. | Use Scenario: Placed across IGBT collector-emitter in 400 V DC bus inverter driving HVAC compressors. IC Role / Device Role / Timing Role: Freewheeling diode providing low-impedance path for inductive kickback during IGBT turn-off; fast recovery prevents cross-conduction. Use Value: 50 A IFSM handles motor stall currents; 300 V VRRM provides 1.33× margin over 240 V RMS bus, ensuring robustness under line surges. |
| Automotive Body Control Module Power Supply | LED Driver Secondary-Side Rectification |
Use Scenario: Input rectifier in 12 V automotive buck-boost converter supplying 5 V/2 A to BCM microcontroller and CAN transceivers. IC Role / Device Role / Timing Role: Front-end AC/DC rectifier handling cold-crank (6 V) to load-dump (36 V) transients; operates in discontinuous conduction mode. Use Value: AEC-Q101 qualification ensures compliance with automotive qualification standards; −55°C to +150°C rating supports under-dash mounting without derating. | Use Scenario: Output rectifier in 24 V input, constant-current LED driver for commercial signage (36 V, 0.7 A string). IC Role / Device Role / Timing Role: Converts high-frequency transformer output to DC; reverse recovery behavior affects output ripple and EMI filter size. Use Value: 20 pF junction capacitance (at 4 V, 1 MHz) minimizes capacitive coupling noise into feedback loop; low VF improves efficiency in thermally constrained aluminum-core PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2R03G | VRRM = 300 V, trr = 30 ns, VF = 1.25 V @ 2 A - slightly faster and lower VF, but not AEC-Q101 qualified | Preferred for industrial SMPS where automotive qualification is unnecessary and 5 ns faster recovery is beneficial | Select STTH2R03G when AEC-Q101 is not required and lowest possible switching loss is prioritized |
| ON Semi MUR230 | VRRM = 300 V, trr = 35 ns, VF = 1.35 V @ 2 A - identical recovery, +0.05 V higher VF, AEC-Q101 not claimed | Suitable for cost-sensitive consumer adapters where qualification and exact VF matching are secondary | Choose MUR230 only if supply chain diversification is needed and AEC-Q101 is not mandated |
Compared with STTH2R03G and MUR230, SF25GH uniquely combines AEC-Q101 qualification, 300 V rating, and 35 ns recovery in DO-15 - making it the only drop-in option for automotive-compliant designs requiring proven reliability and known thermal performance (RθJA = 65°C/W).
Availability
SF25GH is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and automotive body control module power supplies requiring stable component supply and long-term lifecycle support.
Supply support for SF25GH 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 MOSFETs since 1979.
The SF2xG series was designed specifically for high-efficiency, high-reliability power conversion in automotive and industrial applications - emphasizing AEC-Q101 compliance, tight parametric consistency, and robust thermal performance in standard packages.
FAQ
What is the maximum junction temperature rating for SF25GH?
The SF25GH has a maximum junction temperature (TJ) of +150°C and a minimum of −55°C. This rating is specified in the Absolute Maximum Ratings table and applies across all operating conditions. Derating curves confirm that full 2 A forward current is supported up to 75°C ambient, with linear reduction to zero at 150°C junction temperature. The SF25GH's RθJA of 65°C/W allows accurate thermal design using standard DO-15 PCB pad layouts.
Is SF25GH pin-compatible with other DO-15 rectifiers like 1N4007 or UF4007?
Yes, SF25GH uses the standard DO-204AC (DO-15) axial package with anode/cathode lead configuration identical to 1N4007 and UF4007 - enabling direct physical replacement on existing footprints. However, SF25GH is not functionally equivalent: it offers 300 V VRRM, 35 ns trr, and AEC-Q101 qualification, whereas 1N4007 is a general-purpose 1000 V/30 µs rectifier and UF4007 is a 600 V/50 ns ultrafast part. Layout reuse is possible, but electrical validation is required.
Does SF25GH meet automotive qualification standards?
Yes, SF25GH is explicitly AEC-Q101 qualified, as confirmed in the "FEATURES" section and ordering code suffix "H". This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and unbiased highly accelerated stress testing (uHAST). The qualification applies to the full SF2xGH series and is documented in Taiwan Semiconductor's H2105 revision datasheet - making SF25GH suitable for automotive body electronics, infotainment power supplies, and ADAS auxiliary rails.
What is the typical reverse leakage current of SF25GH at elevated temperature?
The SF25GH exhibits ≤100 µA reverse leakage current (IR) at rated VR and TJ = 125°C, per Electrical Specifications table. At 25°C, leakage is ≤5 µA. This low, well-bounded leakage supports stable operation in high-impedance feedback networks and high-voltage hold circuits. The glass-passivated junction contributes to this stability, minimizing drift over time and temperature compared to epoxy-passivated alternatives.
How does the junction capacitance of SF25GH affect EMI in high-frequency designs?
SF25GH has a typical junction capacitance (CJ) of 20 pF at 4.0 V and 1 MHz - significantly lower than SF21G–SF24G variants (40 pF). This reduced capacitance lowers displacement current during voltage transitions, directly suppressing common-mode EMI generation at the switching node. In 300–500 kHz flyback designs, this enables smaller Y-capacitor values and relaxed EMI filter requirements without compromising reverse recovery performance.
SF25GH 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):
- 300 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):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 300 V
- Capacitance @ Vr, F:
- 20pF @ 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
SF25GH FAQ
1.How can I place an order for SF25GH through Aetrix?
Please submit a Request for Quotation (RFQ) for SF25GH 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 SF25GH reliable?
The price and inventory of SF25GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF25GH is usually 5 days.
3.What payment methods are accepted for SF25GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF25GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF25GH?
SF25GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF25GH 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 SF25GH?
For technical support, including SF25GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF25GH requirements.
6.How does Aetrix verify that SF25GH is sourced from the original manufacturer or authorized distributors?
All SF25GH 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 SF25GH meets industry standards.
7.What is the process for return or replacement of SF25GH?
All SF25GH units undergo pre-shipment inspection (PSI). If there is an issue with SF25GH, 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 SF25GH part is unused and in its original packaging.
Return procedure for SF25GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SF25GH 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…
