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Diodes Incorporated SBL1650
- Part No.:
- SBL1650
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- TO-220-2
- Datasheet:
-
SBL1650.pdf
- Description:
- DIODE SCHOTTKY 50V 16A TO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,218
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Product details
Overview
SBL1650 from Diodes Incorporated is a 16A, 50V 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 serves as a primary output rectifier in low-voltage DC-DC converters and free-wheeling diode in synchronous buck regulators for industrial power supplies.
For engineers reviewing the SBL1650 datasheet, SBL1650 pinout, SBL1650 application, or SBL1650 equivalent, key selection criteria include forward voltage at rated current, junction-to-case thermal resistance, peak repetitive reverse voltage, surge current rating, and TO-220AC mounting compatibility with heatsink interfaces.
Technical Context
The SBL1650 uses guard ring die construction to enhance transient robustness and suppress leakage under high dv/dt conditions. Its Schottky barrier structure enables zero minority-carrier storage, eliminating reverse recovery time and reducing switching losses in high-frequency topologies.
Designed for operation up to 150°C junction temperature, it requires heatsinking at case temperatures above 95°C per the derating curve. Junction capacitance is 700 pF at 4 V reverse bias, influencing high-frequency snubber design and EMI filtering requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse blocking voltage; defines safe operating margin in 36–48 V bus applications. |
| IO @ TC=95°C | 16 A - Continuous average forward current with heatsink; sets minimum heatsink size for 12 V/200 W output stages. |
| VFM @ 16 A, 25°C | 0.57 V - Low conduction loss enabling >95% efficiency in 5–12 V secondary-side rectification. |
| IFSM (8.3 ms) | 275 A - Withstands inrush and short-circuit surge without bond-wire fusing; supports overcurrent protection delay timing. |
| RθJC | 3.5°C/W - Enables direct thermal path to heatsink; allows 110°C ΔT rise at full load for compact thermal design. |
| Cj @ 4 V | 700 pF - Limits high-frequency displacement current; impacts EMI filter component sizing in <1 MHz SMPS. |
| IRM @ 100°C | 50 mA - Reverse leakage at max operating temperature; affects standby power in always-on auxiliary supplies. |
Pinout & Package
Package: TO-220AC - Insulated plastic case with single-tab metal backplate for mechanical mounting and thermal conduction; lead-free, RoHS-compliant tin finish; weight ≈ 2.24 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Forward current entry | Connected to switching node or transformer secondary; must withstand full load current and high dv/dt transients. |
| Pin 2 (Cathode) | Forward current exit / output rail connection | Directly tied to output capacitor and load; low-inductance layout critical to minimize voltage overshoot. |
| Case (Tab) | Anode-connected metal backplate | Electrically tied to Pin 1; requires insulating washer when mounted to grounded heatsink; primary thermal path to ambient. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves ruggedness against voltage transients and ESD events without external clamping components. |
| Low VFM at high current | Reduces conduction loss by ≥15% vs. comparable 50 V Si diodes, lowering thermal stress in dense PCB layouts. |
| TO-220AC thermal interface | Enables direct bolt-down to extruded aluminum heatsinks with thermal pad or grease; supports >10 W dissipation. |
| High IFSM rating | Survives 275 A surge for 8.3 ms, accommodating startup inrush and fault currents in 48 V telecom systems. |
Applications
| Server VRM Output Rectification | Industrial DC-DC Converter |
|---|---|
Use Scenario: Secondary-side rectification in multiphase 12 V VRMs powering CPU/GPU cores. IC Role / Device Role / Timing Role: Primary freewheeling diode replacing synchronous MOSFETs in cost-sensitive designs. Use Value: Eliminates gate drive complexity while maintaining <1.2 V dropout at 16 A, supporting stable 12 V ±5% regulation. | Use Scenario: Output rectification in isolated 24 V input → 5 V/10 A industrial DC-DC modules. IC Role / Device Role / Timing Role: Main output diode in forward or flyback topology with 100 kHz–500 kHz switching. Use Value: Zero reverse recovery enables clean turn-off waveforms, reducing snubber losses and EMI filter burden. |
| Telecom Power Shelf | Automotive Battery Management |
Use Scenario: 48 V bus polarity protection and OR-ing in redundant telecom power shelves. IC Role / Device Role / Timing Role: High-current OR-ing diode ensuring hot-swap capability and fault isolation. Use Value: 50 V VRRM provides 20% margin over 48 V nominal; 275 A IFSM handles hot-insertion surges. | Use Scenario: Reverse battery protection and load dump clamping in 12 V automotive BMS front-end. IC Role / Device Role / Timing Role: Polarity protection diode placed between battery terminal and system input. Use Value: Guard ring construction withstands ISO 7637-2 pulse 5a (load dump) transients up to 60 V peak. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-16CTH05 | Same 50 V VRRM, but higher VFM (0.65 V @ 16 A); RθJC = 3.0°C/W. | Better thermal performance but higher conduction loss; suited for thermally constrained but lower-current duty cycles. | Select if heatsink area is limited and average load <12 A. |
| ON Semiconductor MBR1650CT | Dual common-cathode configuration; same VRRM/VFM specs; TO-220AB package with isolated tab. | Enables dual-output or interleaved designs; tab isolation simplifies grounding in floating secondary circuits. | Select for dual-rail outputs or when cathode-referenced layout is required. |
Compared with VS-16CTH05 and MBR1650CT, the SBL1650 offers the lowest forward voltage in its class and a non-isolated anode-tab configuration ideal for cost-optimized, single-rail 48 V systems where thermal mass is available.
Availability
SBL1650 is available at Aetrix Electronics and suitable for industrial DC-DC converters, telecom power shelves, and server VRM designs requiring stable component supply and long-term production continuity.
Supply support for SBL1650 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 specifically for high-efficiency, low-voltage power conversion in computing, telecom, and industrial infrastructure.
FAQ
Is SBL1650 suitable for surface-mount assembly?
No. The SBL1650 uses a through-hole TO-220AC package with leads designed for axial insertion and soldering. It lacks surface-mount terminations or thermal pad geometry required for reflow processes. Mounting requires mechanical fastening to a heatsink and wave or hand soldering of leads.
What is the maximum recommended case temperature for continuous operation?
The datasheet specifies 95°C as the maximum case temperature for full 16 A average current rating. Above this, current must be linearly derated per Figure 1 - e.g., at 110°C case temperature, maximum IO drops to approximately 12.5 A to maintain safe junction temperature ≤150°C.
Does SBL1650 have a built-in thermal shutdown function?
No. The SBL1650 is a passive rectifier with no integrated thermal sensing or protection circuitry. Safe operation relies entirely on external thermal management - including heatsink sizing, airflow, and PCB copper area - to keep junction temperature within −65°C to +150°C limits.
Can SBL1650 replace SBL1645 in an existing design?
Yes, with verification. Both share identical TO-220AC package, pinout, and thermal characteristics. The SBL1650 offers higher VRRM (50 V vs. 45 V) and slightly lower VFM (0.57 V vs. 0.62 V), improving margin and efficiency. Confirm that reverse voltage stress in your circuit remains ≤50 V before substitution.
SBL1650 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):
- 50 V
- Current - Average Rectified (Io):
- 16A
- Voltage - Forward (Vf) (Max) @ If:
- 750 mV @ 16 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 mA @ 50 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AC
- Operating Temperature - Junction:
- -65°C ~ 150°C
SBL1650 FAQ
1.How can I place an order for SBL1650 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBL1650 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 SBL1650 reliable?
The price and inventory of SBL1650 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBL1650 is usually 5 days.
3.What payment methods are accepted for SBL1650?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBL1650 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBL1650?
SBL1650 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBL1650 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 SBL1650?
For technical support, including SBL1650 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBL1650 requirements.
6.How does Aetrix verify that SBL1650 is sourced from the original manufacturer or authorized distributors?
All SBL1650 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 SBL1650 meets industry standards.
7.What is the process for return or replacement of SBL1650?
All SBL1650 units undergo pre-shipment inspection (PSI). If there is an issue with SBL1650, 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 SBL1650 part is unused and in its original packaging.
Return procedure for SBL1650:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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