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Diodes Incorporated SF30JG-B
- Part No.:
- SF30JG-B
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SF30JG-B.pdf
- Description:
- DIODE GEN PURP 600V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:4,893
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Product details
Overview
SF30JG-B from Diodes Incorporated is a 3.0A, 600V super-fast glass passivated rectifier diode in DO-201AD package, designed for high-efficiency AC/DC conversion in off-line power supplies and switching-mode power adapters. It delivers 125A non-repetitive peak surge current capability, 35ns reverse recovery time, and low 0.95V forward voltage at 3.0A, enabling compact, thermally efficient designs in industrial and consumer power applications.
For engineers reviewing the SF30JG-B datasheet, SF30JG-B pinout, SF30JG-B application, or SF30JG-B equivalent, key selection criteria include its 600V VRRM, 3.0A average rectified current at 55°C ambient, 125A IFSM, 35ns trr, and DO-201AD mechanical compatibility with standard through-hole power rectifier footprints.
Technical Context
This super-fast rectifier uses a diffused junction and glass passivated die construction to achieve rapid carrier recombination and low reverse recovery charge-critical for reducing switching losses in 50–100kHz SMPS topologies. Its 35ns reverse recovery time (measured at IF = 0.5A, IR = 1.0A, Irr = 0.25A) and 75pF typical junction capacitance at 4V reverse bias support high-frequency operation without excessive ringing or EMI.
The device operates across –65°C to +150°C junction temperature range and exhibits only 5.0μA peak reverse leakage at 25°C and 100μA at 100°C under rated 600V DC blocking voltage-enabling stable performance in thermally demanding environments such as enclosed power adapters and motor drive front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Maximum repetitive reverse voltage before breakdown; defines safe operating limit in 400V DC bus or 230V AC line applications. |
| IO | 3.0 A @ TA = 55°C - Average rectified output current with leads held at ambient at 9.5mm from case; sets thermal derating baseline for PCB layout. |
| trr | 35 ns - Reverse recovery time under specified test conditions; directly reduces switching loss and improves efficiency in 50–100kHz converters. |
| VF @ 3.0A | 0.95 V - Forward voltage drop at rated current; determines conduction loss and thermal dissipation (≈2.85W at full load). |
| IFSM | 125 A - Non-repetitive peak forward surge current (8.3ms half-sine); withstands cold-start inrush and transient overloads. |
| RθJA | 32 °C/W - Junction-to-ambient thermal resistance; enables thermal design using standard DO-201AD copper pad area (≥1.0 cm² recommended). |
Pinout & Package
Package: DO-201AD molded plastic case (UL 94V-0), cathode band polarity marking, tin-plated leads solderable per MIL-STD-202 Method 208, 1.12g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for forward conduction path | Connected to AC input or transformer secondary; carries full load current during positive half-cycle. |
| Cathode | Output terminal for forward conduction path | Connected to bulk capacitor or downstream regulator; provides unidirectional current flow to DC bus. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die construction | Enhances moisture resistance and long-term reliability in humid or thermally cycled environments without hermetic sealing. |
| Super-fast switching (35ns trr) | Reduces reverse recovery loss by >40% vs. standard fast rectifiers (e.g., 100–200ns), improving converter efficiency at 65–100kHz. |
| 125A surge rating | Supports robust cold-start behavior in offline SMPS without external inrush limiting, simplifying BOM and board space. |
| Low 5.0μA reverse leakage @ 25°C | Minimizes standby power loss in no-load or light-load conditions, aiding compliance with Energy Star and EU CoC v5 Tier 2. |
Applications
| AC/DC Power Adapters | Industrial SMPS Front-Ends |
|---|---|
Use Scenario: 230V AC input rectification in compact wall-wart adapters delivering 12–24V DC at up to 36W. IC Role / Device Role / Timing Role: Primary-side super-fast rectifier in single-phase bridge configuration. Use Value: 35ns trr and 0.95V VF reduce conduction and switching losses, enabling >85% efficiency at full load without heatsinking. |
Use Scenario: Input rectification in 48V telecom power supplies with active PFC and LLC resonant stages. IC Role / Device Role / Timing Role: Secondary-side freewheeling diode in synchronous rectifier auxiliary circuits. Use Value: Low 75pF junction capacitance minimizes capacitive coupling noise into sensitive control circuitry and improves EMI margin. |
| Motor Drive Auxiliary Supplies | LED Driver Bulk Rectification |
Use Scenario: Off-line auxiliary power supply for gate drivers and logic in 3-phase inverter modules. IC Role / Device Role / Timing Role: High-reliability rectifier in isolated flyback-derived bias rails. Use Value: Glass passivation and –65°C to +150°C operating range ensure stable operation under motor-induced thermal cycling and vibration. |
Use Scenario: Bulk rectification stage in constant-current LED drivers for street lighting and commercial fixtures. IC Role / Device Role / Timing Role: Main AC input rectifier feeding high-voltage DC bus (>300V) for buck-boost regulation. Use Value: 600V VRRM provides 2× safety margin over 230V AC peak (325V), eliminating risk of voltage transients causing failure. |
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 110°C case (not ambient); trr = 30ns, VF = 1.15V @ 3A. | Better suited for heatsink-mounted configurations; higher VF increases conduction loss in PCB-conducted thermal designs. | Select when thermal interface to metal chassis is available and lower trr outweighs VF penalty. |
| VS-3EYH06-M3 | DO-201AD package, 600V, 3.0A, trr = 45ns, VF = 0.92V @ 3A, RθJA = 30°C/W. | Lower VF improves light-load efficiency; longer trr may increase switching loss above 80kHz. | Prefer for cost-sensitive, lower-frequency (<70kHz) designs where conduction loss dominates. |
Compared with STTH3L06S and VS-3EYH06-M3, SF30JG-B offers the best balance of ultra-low VF (0.95V), industry-standard 35ns trr, and ambient-referenced 3.0A rating-making it optimal for standard through-hole, natural-convection-cooled power supplies.
Availability
SF30JG-B is available at Aetrix Electronics and suitable for AC/DC power adapters, industrial SMPS front-ends, and motor drive auxiliary supplies requiring stable component supply and long-lifecycle support.
Supply support for SF30JG-B 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, computing, and consumer markets.
SF30JG-B belongs to the SF30xG super-fast rectifier product line, engineered specifically for high-efficiency, cost-optimized AC/DC conversion in space-constrained off-line power systems.
FAQ
Is SF30JG-B RoHS compliant and lead-free?
Yes, SF30JG-B features a lead-free finish and is fully RoHS compliant per Directive 2011/65/EU, including exemption for high-melting-point solder (Annex III, point 7). Tin-plated leads meet MIL-STD-202 Method 208 solderability requirements.
What is the maximum allowable ambient temperature for continuous 3.0A operation?
SF30JG-B supports 3.0A average rectified current only at TA = 55°C, with leads maintained at ambient temperature at 9.5mm from the case. At 25°C ambient, derating curves permit up to ~3.8A; at 75°C, maximum IO drops to ~2.2A.
Can SF30JG-B replace SF30HG-B in an existing design?
Yes-SF30JG-B and SF30HG-B share identical DO-201AD package, pinout, and thermal characteristics, differing only in VRRM (600V vs. 500V) and trr (35ns vs. 40ns). Substitution is safe if system peak reverse voltage remains ≤600V and faster recovery is acceptable.
Why is SF30JG-B marked "NOT RECOMMENDED FOR NEW DESIGN"?
Diodes Incorporated issued this notice due to planned obsolescence-SF30JG-B remains fully functional and supported, but newer alternatives like the SB360 series offer improved VF, trr, and thermal performance. Legacy designs may continue using SF30JG-B with full datasheet compliance and supply continuity.
SF30JG-B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Bulk
- 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:
- 50pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -65°C ~ 150°C
SF30JG-B FAQ
1.How can I place an order for SF30JG-B through Aetrix?
Please submit a Request for Quotation (RFQ) for SF30JG-B 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-B reliable?
The price and inventory of SF30JG-B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF30JG-B is usually 5 days.
3.What payment methods are accepted for SF30JG-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF30JG-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF30JG-B?
SF30JG-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF30JG-B 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-B?
For technical support, including SF30JG-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF30JG-B requirements.
6.How does Aetrix verify that SF30JG-B is sourced from the original manufacturer or authorized distributors?
All SF30JG-B 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-B meets industry standards.
7.What is the process for return or replacement of SF30JG-B?
All SF30JG-B units undergo pre-shipment inspection (PSI). If there is an issue with SF30JG-B, 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-B part is unused and in its original packaging.
Return procedure for SF30JG-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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