My Inquiry
My Account
Diodes Incorporated SF30JG-T
- Part No.:
- SF30JG-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SF30JG-T.pdf
- Description:
- DIODE GEN PURP 600V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:3,863
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SF30JG-T from Diodes Incorporated is a 3.0A, 600V super-fast glass passivated rectifier diode in DO-201AD package, featuring 35ns reverse recovery time, 0.95V forward voltage at 3.0A, and 125A non-repetitive peak surge current. It serves as primary-side output rectifier in offline SMPS, PFC stages, and DC-DC converters requiring high efficiency and low switching loss.
For engineers reviewing the SF30JG-T datasheet, SF30JG-T pinout, SF30JG-T application, or SF30JG-T equivalent, key selection criteria include VRRM = 600V, IO = 3.0A @ TA = 55°C, trr = 35ns, VF = 0.95V @ 3.0A, and DO-201AD thermal resistance of 32°C/W - critical for flyback and boost converter thermal design.
Technical Context
This super-fast rectifier uses diffused junction construction and glass passivation to achieve low reverse leakage (5.0µA @ 25°C) and stable performance across -65°C to +150°C operating range. Its 35ns reverse recovery time enables high-frequency operation up to 100kHz in hard-switched topologies without excessive switching loss.
The device is rated for 600V peak repetitive reverse voltage with 420V RMS rating, and exhibits 75pF typical junction capacitance at 4V reverse bias and 1MHz - supporting fast transient response in snubberless designs and reducing EMI generation in compact power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Withstands 600V peak reverse voltage in bridge or single-phase rectification without breakdown. |
| IO | 3.0 A @ TA = 55°C - Sustains continuous average forward current under standard heatsink-free PCB mounting conditions. |
| trr | 35 ns - Enables efficient operation in 50–100 kHz SMPS with minimal reverse recovery loss and reduced diode-induced ringing. |
| VF | 0.95 V @ IF = 3.0 A - Low conduction loss improves system efficiency, especially in high-current secondary-side rectification. |
| IFSM | 125 A @ 8.3 ms - Handles inrush and overload transients in AC-DC adapters and industrial power supplies without failure. |
| RθJA | 32 °C/W - Junction-to-ambient thermal resistance defines required PCB copper area (≥1.5 cm² 2oz Cu) for safe operation at full load. |
Pinout & Package
DO-201AD axial-leaded plastic package with cathode band marking; two-terminal device (anode and cathode), lead finish: matte tin, RoHS-compliant, UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node in synchronous rectifier topology). |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; connects to output rail or positive bus; blocks 600V reverse voltage during off-state. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Prevents moisture ingress and surface contamination, ensuring long-term reliability in humid or industrial environments. |
| Diffused junction | Provides soft reverse recovery characteristic and reduces EMI compared to abrupt-junction fast rectifiers. |
| 125A surge rating | Supports cold-start inrush and line-voltage transients without parametric shift or catastrophic failure. |
| Low IR (5.0 µA) | Minimizes standby power loss in energy-efficient adapters meeting DOE Level VI and EU CoC Tier 2 requirements. |
Applications
| AC-DC Adapter Output Rectification | Boost PFC Stage Diode |
|---|---|
Use Scenario: 36W laptop adapter with universal input (90–264VAC) and 12V/3A output. IC Role / Device Role / Timing Role: Primary-side output rectifier in discontinuous conduction mode (DCM) flyback converter. Use Value: 35ns trr and 0.95V VF reduce conduction and switching losses, enabling >88% efficiency at full load per DOE Level VI. |
Use Scenario: 200W industrial AC-DC front-end with active boost PFC stage. IC Role / Device Role / Timing Role: Fast recovery diode in boost output rectifier position, handling 3.0A average current at 100kHz switching. Use Value: 600V VRRM and 125A IFSM support 400V DC bus with margin for 110% overvoltage transients. |
| Offline LED Driver Secondary Rectifier | DC-DC Converter Input Protection |
Use Scenario: 25W constant-current LED driver for street lighting with 30–42V output. IC Role / Device Role / Timing Role: Output rectifier in quasi-resonant (QR) flyback, operating at variable frequency up to 130kHz. Use Value: 75pF CT minimizes capacitive coupling noise; low IR ensures stable regulation under light-load dimming conditions. |
Use Scenario: 12V/5A isolated DC-DC module receiving 48V input from telecom power shelf. IC Role / Device Role / Timing Role: Reverse polarity and overvoltage protection diode on primary input side. Use Value: DO-201AD mechanical robustness and 32°C/W RθJA allow direct PCB mounting without heatsink while maintaining <125°C junction temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L06S | Same 600V VRRM, but 3.0A IO rated at TA = 75°C; trr = 45ns; higher VF = 1.15V @ 3A. | Higher thermal derating margin but increased conduction loss; better suited for forced-air-cooled systems. | Select when ambient exceeds 55°C and airflow is available; avoid in sealed, convection-only enclosures. |
| ES3J | 600V VRRM, 3.0A IO @ 55°C, trr = 35ns, but VF = 1.30V @ 3A and RθJA = 40°C/W. | Higher forward drop and worse thermal resistance limit usable current in compact PCB layouts. | Acceptable only in cost-sensitive, low-efficiency designs where 0.35V extra VF loss is tolerable. |
Compared with STTH3L06S and ES3J, SF30JG-T delivers the lowest VF (0.95V) and best thermal resistance (32°C/W) among 600V/3A super-fast rectifiers in DO-201AD, making it optimal for space-constrained, natural-convection-powered SMPS.
Availability
SF30JG-T is available at Aetrix Electronics and suitable for AC-DC adapters, LED drivers, and industrial DC-DC converters requiring stable component supply, long-lifecycle sourcing, and RoHS-compliant manufacturing.
Supply support for SF30JG-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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power, signal integrity, and protection solutions for industrial, computing, and consumer markets.
SF30JG-T belongs to Diodes' Super-Fast Rectifier product line, engineered for high-frequency switching power supplies where low trr, low VF, and robust surge capability are essential for efficiency and reliability.
FAQ
Is SF30JG-T suitable for new designs?
No - Diodes Incorporated explicitly marks SF30JG-T as "NOT RECOMMENDED FOR NEW DESIGN" in its official datasheet (DS37836 Rev. 1–3). It remains available for legacy production and repair, but engineers should evaluate modern alternatives like the DFLS360 or SB360 for new projects requiring improved efficiency or extended lifecycle support.
What is the maximum allowable junction temperature for SF30JG-T?
The absolute maximum junction temperature is +150°C, with storage temperature matching that range (–65°C to +150°C). Derating begins above 55°C ambient: Figure 1 shows linear current reduction to zero at +150°C ambient, implying safe operation up to ~125°C junction under typical PCB thermal conditions with 32°C/W RθJA.
Does SF30JG-T have a specified avalanche rating?
No - the datasheet does not specify unclamped inductive switching (UIS) or avalanche energy rating. The device is designed for clamped or resistive-inductive loads per standard rectifier test conditions; use external TVS or RC snubbers if subjected to inductive turn-off stress.
Can SF30JG-T replace SF30FG-T in an existing design?
Yes - both share identical DO-201AD package, pinout, and thermal characteristics, differing only in VRRM (600V vs. 300V) and trr (35ns vs. 50ns). SF30JG-T offers higher voltage margin and faster recovery, but verify layout clearance and snubber tuning due to reduced reverse recovery tail.
SF30JG-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 600 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -65°C ~ 150°C
SF30JG-T FAQ
1.How can I place an order for SF30JG-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SF30JG-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 SF30JG-T reliable?
The price and inventory of SF30JG-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF30JG-T is usually 5 days.
3.What payment methods are accepted for SF30JG-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF30JG-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF30JG-T?
SF30JG-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF30JG-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 SF30JG-T?
For technical support, including SF30JG-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF30JG-T requirements.
6.How does Aetrix verify that SF30JG-T is sourced from the original manufacturer or authorized distributors?
All SF30JG-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 SF30JG-T meets industry standards.
7.What is the process for return or replacement of SF30JG-T?
All SF30JG-T units undergo pre-shipment inspection (PSI). If there is an issue with SF30JG-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 SF30JG-T part is unused and in its original packaging.
Return procedure for SF30JG-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SF30JG-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
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
