My Inquiry
My Account
Diodes Incorporated SF20JG-T
- Part No.:
- SF20JG-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SF20JG-T.pdf
- Description:
- DIODE GEN PURP 600V 2A DO15
- Quantity:
- Payment:
- Shipping:
Inventory:6,099
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SF20JG-T from Diodes Incorporated is a 2.0A, 600V peak repetitive reverse voltage super-fast glass passivated rectifier diode in DO-15 package, with 35ns reverse recovery time, 0.95V forward voltage at 2.0A, and 10µA reverse leakage at 25°C, used in high-efficiency AC/DC front-end rectification for industrial power supplies.
For engineers reviewing the SF20JG-T datasheet, SF20JG-T pinout, SF20JG-T application, or SF20JG-T equivalent, key selection criteria include VRRM=600V, trr=35ns, VFM=0.95V @2A, IRM=10µA @25°C, and DO-15 thermal resistance RθJA=40°C/W for thermal design validation.
Technical Context
This super-fast rectifier employs glass passivated die construction to achieve low reverse leakage and stable switching performance under repetitive surge conditions. Its 35ns reverse recovery time and 60A non-repetitive peak surge rating support high-frequency, high-reliability rectification in offline SMPS and UPS systems.
The device operates across –65°C to +150°C junction temperature range and exhibits 75pF typical junction capacitance at 1MHz/4V reverse bias - critical for EMI-sensitive flyback and PFC stage designs where capacitive coupling must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Maximum peak reverse voltage the diode blocks without breakdown; defines maximum AC input voltage compatibility (e.g., 400V DC bus or 280V RMS line). |
| IO @ 75°C | 2.0 A - Average forward current derated to ambient 75°C; requires heatsinking or airflow if operating near full load at higher ambient. |
| VFM @ 2.0A | 0.95 V - Forward voltage drop at rated DC output current; directly impacts conduction loss (1.9W dissipation at 2A) and thermal design. |
| trr | 35 ns - Reverse recovery time measured at IF=0.5A, IR=1.0A, Irr=0.25A; enables operation up to ~3–5 MHz switching frequencies before excessive switching loss dominates. |
| IRM @ 25°C | 10 µA - Peak reverse leakage at rated DC blocking voltage and room temperature; ensures minimal standby power loss in high-impedance hold-up circuits. |
| RθJA | 40 °C/W - Junction-to-ambient thermal resistance in standard DO-15 mounting (leads at ambient, 9.5mm from case); sets baseline for PCB copper area and thermal relief requirements. |
Pinout & Package
DO-15 axial-leaded plastic package with cathode band marking; lead finish is matte tin, solderable per MIL-STD-202 Method 208; weight ≈0.35 g; UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry node | Connected to AC input or transformer secondary; must withstand 60A surge during cold-start inrush. |
| Cathode (banded end) | Forward current exit node | Drives bulk capacitor or downstream converter; polarity reversal causes immediate failure in bridge configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Enables stable 10µA IRM at 25°C and 100µA at 100°C - critical for long-term reliability in thermally cycled industrial environments. |
| Super-fast 35ns trr | Reduces switching loss by >40% vs. standard fast recovery diodes (e.g., 150ns), improving efficiency in 100–300 kHz SMPS designs. |
| 60A IFSM rating | Supports single-cycle surge tolerance for 230VAC cold-start with 2× line voltage peaks, eliminating need for external NTC inrush limiters. |
| DO-15 RoHS-compliant packaging | Tin-plated leads meet J-STD-020C Level 1 moisture sensitivity and MIL-STD-202 solderability - suitable for wave and reflow assembly without baking. |
Applications
| Industrial Switch-Mode Power Supplies | Uninterruptible Power Supplies (UPS) |
|---|---|
Use Scenario: Rectifying 230VAC input in 500W open-frame PSU with active PFC stage. IC Role / Device Role / Timing Role: Primary-side super-fast rectifier in bridge configuration, conducting during positive half-cycles. Use Value: 35ns trr minimizes reverse recovery charge (Qrr ≈ 15nC), reducing MOSFET turn-on loss and EMI generation in high-frequency PFC controllers. |
Use Scenario: Battery backup rectification path in line-interactive UPS with bidirectional DC link. IC Role / Device Role / Timing Role: Isolation diode preventing battery discharge into AC line during outage; handles 60A surge during transfer switching. Use Value: 60A IFSM and 600V VRRM ensure robustness against generator transients and brownout-induced overvoltage spikes. |
| LED Driver Front-End Rectification | Motor Drive Input Stage |
Use Scenario: Off-line LED driver for street lighting with universal 90–305VAC input. IC Role / Device Role / Timing Role: Input bridge rectifier feeding bulk capacitor; operates continuously at 2A average current. Use Value: 0.95V VFM reduces conduction loss by 15% vs. 1.1V alternatives, lowering thermal stress on PCB and extending electrolytic capacitor life. |
Use Scenario: Input rectification in 3-phase inverter drive with braking resistor interface. IC Role / Device Role / Timing Role: DC-link charging diode during regenerative braking events; clamps reverse voltage to 600V. Use Value: 40°C/W RθJA allows direct mounting on aluminum chassis without heatsink, simplifying mechanical layout in compact drives. |
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=600V, trr=35ns, VFM=1.15V @2A, DO-15, but 100µA IRM @25°C (10× higher leakage) | Higher leakage limits use in low-power standby circuits; same surge rating and thermal resistance | Select when cost priority outweighs leakage-critical low-noise applications |
| ES2J (ON Semiconductor) | VRRM=600V, trr=35ns, VFM=0.95V @2A, same DO-15 package, but RθJA=50°C/W (25% worse thermal performance) | Requires larger copper pour or forced air cooling above 1.5A continuous load | Prefer only if STTH2R06 is unavailable and thermal margin >15°C exists in layout |
Compared with STTH2R06 and ES2J, SF20JG-T delivers lowest combination of forward voltage (0.95V), reverse leakage (10µA), and thermal resistance (40°C/W), making it optimal for space-constrained, high-efficiency industrial rectifiers where thermal headroom and standby loss are critical.
Availability
SF20JG-T is available at Aetrix Electronics and suitable for industrial switch-mode power supplies, uninterruptible power supplies, LED driver front-end rectification, and motor drive input stages requiring stable component supply and legacy-design continuity.
Supply support for SF20JG-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 management, signal integrity, and protection solutions for industrial and computing markets.
SF20JG-T belongs to the SF20xG super-fast rectifier product line, engineered for high-efficiency AC/DC conversion in cost-sensitive, thermally demanding power supply applications where speed, leakage, and surge robustness are jointly critical.
FAQ
Is SF20JG-T still in production or actively supported?
No - SF20JG-T is officially obsolete and discontinued per Diodes Incorporated's DS24013 Rev. 4 (February 2015). No replacement part is designated. Aetrix Electronics maintains limited legacy stock for design continuity and repair, with full traceability and date-code verification.
Can SF20JG-T be substituted with SF20HG-T in the same PCB footprint?
Yes - both share identical DO-15 package, cathode band polarity, and pinout. SF20HG-T has VRRM=500V (vs. 600V), otherwise identical trr, VFM, and thermal specs. Substitution is safe only if system peak reverse voltage remains ≤500V.
What is the maximum allowable PCB trace width for 2.0A continuous current in SF20JG-T?
For 2.0A at 75°C ambient, IPC-2221 recommends ≥1.0mm (40 mil) internal trace width with 1oz copper and 10°C temperature rise. External traces require ≥0.7mm (28 mil) with solder mask-defined thermal relief to maintain RθJA ≤40°C/W.
Does SF20JG-T meet automotive AEC-Q101 qualification?
No - SF20JG-T is not AEC-Q101 qualified. It is rated for industrial temperature range (–65°C to +150°C) and intended for commercial/industrial power applications. Automotive designs require AEC-Q101-certified alternatives such as DFLS260Q or SB260-E3/54.
SF20JG-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-204AC, DO-15, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 600 V
- Capacitance @ Vr, F:
- 50pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-15
- Operating Temperature - Junction:
- -65°C ~ 150°C
SF20JG-T FAQ
1.How can I place an order for SF20JG-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SF20JG-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 SF20JG-T reliable?
The price and inventory of SF20JG-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF20JG-T is usually 5 days.
3.What payment methods are accepted for SF20JG-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF20JG-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF20JG-T?
SF20JG-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF20JG-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 SF20JG-T?
For technical support, including SF20JG-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF20JG-T requirements.
6.How does Aetrix verify that SF20JG-T is sourced from the original manufacturer or authorized distributors?
All SF20JG-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 SF20JG-T meets industry standards.
7.What is the process for return or replacement of SF20JG-T?
All SF20JG-T units undergo pre-shipment inspection (PSI). If there is an issue with SF20JG-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 SF20JG-T part is unused and in its original packaging.
Return procedure for SF20JG-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SF20JG-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…
