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Diodes Incorporated SBL1640
- Part No.:
- SBL1640
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- TO-220-2
- Datasheet:
-
SBL1640.pdf
- Description:
- DIODE SCHOTTKY 40V 16A TO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,503
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Product details
Overview
SBL1640 from Diodes Incorporated is a 16A, 40V Schottky barrier rectifier in TO-220AC package, featuring low forward voltage drop (0.57 V @ 16 A, 25°C), high surge capability (275 A, 8.3 ms), and thermal resistance of 3.5°C/W. It is used for polarity protection and free-wheeling in low-voltage DC-DC converters and industrial power supplies.
For engineers reviewing the SBL1640 datasheet, SBL1640 pinout, SBL1640 application, or SBL1640 equivalent, key selection criteria include forward voltage at rated current, peak repetitive reverse voltage, surge current rating, thermal resistance, and TO-220AC mounting compatibility with heatsink interfaces.
Technical Context
This device employs guard ring die construction to enhance transient protection and reliability under repetitive surge stress. Its Schottky barrier architecture enables fast switching with negligible reverse recovery time, making it suitable for high-frequency rectification up to several hundred kHz.
The junction-to-case thermal path is optimized for direct heatsink mounting, supporting continuous 16 A conduction at case temperatures up to 95°C per derating curve. Junction capacitance is 700 pF at 4 V reverse bias, influencing high-frequency noise filtering behavior in snubberless designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum non-repetitive reverse voltage before breakdown; sets safe operating limit in 36 V nominal systems. |
| IF(AV) | 16 A @ TC = 95°C - Continuous average forward current with heatsink; defines minimum heatsink requirement. |
| VFM | 0.57 V @ IF = 16 A, TC = 25°C - Low conduction loss enabling >92% efficiency in 5–12 V output rectifiers. |
| IFSM | 275 A, 8.3 ms half-sine - Withstands inrush and fault currents in motor drives and SMPS startup. |
| RθJC | 3.5°C/W - Enables thermal design with standard TO-220 heatsinks; ΔT = 56°C rise at full load. |
| Cj | 700 pF @ VR = 4 V, 1 MHz - Limits high-frequency displacement current; affects EMI filter sizing. |
Pinout & Package
Package: TO-220AC - Molded plastic case (UL 94V-0), single-ended vertical mounting, tin-plated terminals, 2.24 g mass. Mounting position unrestricted; case is electrically connected to cathode (Pin 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Input terminal for forward conduction; connects to unregulated or higher-potential rail. |
| Pin 2 | Cathode | Output terminal; electrically tied to metal tab/case for direct heatsink thermal path and grounding. |
| Metal Tab | Cathode / Thermal Interface | Provides low-resistance thermal conduction to heatsink and serves as cathode return path. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves ruggedness against voltage transients and localized avalanche, extending lifetime in noisy industrial environments. |
| Low VFM at high current | Reduces power dissipation by ~1.5 W vs. comparable 0.75 V diodes at 16 A, lowering heatsink size and cost. |
| High IFSM rating | Supports reliable operation during repeated cold-start surges in battery-powered inverters and UPS systems. |
| RoHS-compliant finish | Tin-plated terminals meet MIL-STD-202 solderability requirements and enable lead-free reflow assembly. |
Applications
| DC-DC Converter Output Rectification | Reverse Polarity Protection |
|---|---|
Use Scenario: Secondary-side rectification in 5–12 V isolated flyback or forward converters powering FPGA or microcontroller rails. IC Role / Device Role / Timing Role: Unidirectional current valve converting transformer AC output to regulated DC; no timing function. Use Value: 0.57 V forward drop minimizes conduction loss at 10–16 A loads, improving system efficiency by 1.2–1.8% over standard silicon diodes. | Use Scenario: Input protection circuit on 24 V industrial PLC modules exposed to field wiring errors. IC Role / Device Role / Timing Role: Series-connected anode-in configuration blocking reverse input voltage while passing forward current. Use Value: 40 V VRRM provides 10 V margin above 24 V nominal, and 275 A surge rating withstands accidental 48 V hot-swap events. |
| Freewheeling Diode in Motor Drivers | Low-Voltage Solar Charge Controller |
Use Scenario: Freewheeling path across brushed DC motor windings in 24–36 V automotive seat adjusters. IC Role / Device Role / Timing Role: Provides low-loss recirculation path for inductive kickback during PWM turn-off. Use Value: Fast recovery (Schottky) eliminates reverse recovery spikes, reducing EMI and MOSFET switching losses in H-bridge drivers. | Use Scenario: Blocking diode between PV panel array (max 32 V Voc) and 24 V battery bank in off-grid solar systems. IC Role / Device Role / Timing Role: Prevents nighttime battery discharge through panels; operates continuously at partial load. Use Value: 16 A rating supports up to 384 W panel input; 3.5°C/W RθJC allows passive heatsinking even in enclosed enclosures. |
Availability
SBL1640 is available at Aetrix Electronics and suitable for DC-DC converter output rectification, reverse polarity protection, and freewheeling diode applications requiring stable component supply and long-term industrial availability.
Supply support for SBL1640 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, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.
The SBL16xx series belongs to Diodes' high-current Schottky rectifier product line, engineered for efficiency-critical 5–48 V power conversion in industrial, computing, and renewable energy systems.
FAQ
Is SBL1640 suitable for surface-mount assembly?
No. SBL1640 uses a through-hole TO-220AC package with leads designed for PCB through-hole insertion and heatsink mounting. It is not compatible with reflow or wave soldering processes intended for SMT packages like TO-252 or SMB.
What is the maximum operating temperature at full 16 A load?
At 16 A average forward current, the maximum allowable case temperature is 95°C per the derating curve. Junction temperature must remain ≤150°C, requiring a heatsink that maintains TC ≤95°C under worst-case ambient and airflow conditions.
Does SBL1640 have a built-in thermal shutdown feature?
No. SBL1640 is a passive rectifier without integrated thermal sensing or protection circuitry. System-level thermal management - including heatsink selection, airflow, and current derating - must be implemented externally per the datasheet's derating curve.
Can SBL1640 replace SBL1645 in a 45 V design?
No. SBL1640 has a 40 V peak repetitive reverse voltage (VRRM), making it unsuitable for circuits where reverse voltage may exceed 40 V. SBL1645 (45 V VRRM) provides necessary margin in 42 V nominal systems or those with voltage transients above 40 V.
SBL1640 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-220-2
- Packaging:
- Tube
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 16A
- Voltage - Forward (Vf) (Max) @ If:
- 570 mV @ 16 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 mA @ 40 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AC
- Operating Temperature - Junction:
- -65°C ~ 150°C
SBL1640 FAQ
1.How can I place an order for SBL1640 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBL1640 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 SBL1640 reliable?
The price and inventory of SBL1640 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBL1640 is usually 5 days.
3.What payment methods are accepted for SBL1640?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBL1640 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBL1640?
SBL1640 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBL1640 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 SBL1640?
For technical support, including SBL1640 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBL1640 requirements.
6.How does Aetrix verify that SBL1640 is sourced from the original manufacturer or authorized distributors?
All SBL1640 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 SBL1640 meets industry standards.
7.What is the process for return or replacement of SBL1640?
All SBL1640 units undergo pre-shipment inspection (PSI). If there is an issue with SBL1640, 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 SBL1640 part is unused and in its original packaging.
Return procedure for SBL1640:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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