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Diodes Incorporated SBL1650CT
- Part No.:
- SBL1650CT
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SBL1650CT.pdf
- Description:
- DIODE ARR SCHOTT 50V 16A TO2203
- Quantity:
- Payment:
- Shipping:
Inventory:4,929
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Product details
Overview
SBL1650CT from Diodes Incorporated is a 16A dual common-cathode Schottky barrier rectifier in TO-220AB package, rated for 50V peak reverse voltage, 0.70V forward voltage at 8.0A/25°C, and 250A non-repetitive surge current-designed for low-voltage, high-frequency freewheeling and polarity protection in DC-DC converters.
For engineers reviewing the SBL1650CT datasheet, SBL1650CT pinout, SBL1650CT application, or SBL1650CT equivalent, key selection factors include its 3.5°C/W junction-to-case thermal resistance, 700pF junction capacitance at 4V, 50V blocking capability, and TO-220AB mechanical compatibility with standard heatsinks in industrial power supplies.
Technical Context
This dual common-cathode Schottky rectifier integrates two independent anode terminals (Pin 1 and Pin 3) sharing a single cathode (Pin 2), enabling synchronous or interleaved freewheeling paths. Its guard ring die construction provides transient overvoltage immunity without external TVS devices.
The device operates across –65°C to +150°C junction temperature range and sustains 16A average forward current only when case temperature is maintained at ≤95°C via heatsinking-derating to ~10A at 125°C per Fig. 1 in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse voltage before breakdown; sets upper limit for DC bus or output rail protection. |
| IO @ TC=95°C | 16 A - Continuous average forward current achievable only with heatsink maintaining case at 95°C. |
| VFM @ 8.0A, 25°C | 0.70 V - Low conduction loss enables >92% efficiency in 5–12V output stages at typical load currents. |
| IFSM (8.3ms) | 250 A - Withstands inrush surges from bulk capacitors or motor startup without failure. |
| RθJC | 3.5 °C/W - Enables thermal design with standard TO-220 heatsinks; ΔT = 56°C rise at 16A full load. |
| Cj @ 4V, 1MHz | 700 pF - Limits high-frequency switching noise and EMI in SMPS freewheeling paths. |
Pinout & Package
Package: TO-220AB molded plastic case (UL 94V-0), with tin-plated terminals, 2.24g mass, and integrated metal tab electrically connected to cathode (Pin 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Independent input path for first diode leg; marked "+" on body. |
| Pin 2 | Cathode (common) | Shared cathode node; electrically tied to metal tab; must be heatsinked and grounded per layout. |
| Pin 3 | Anode 2 | Independent input path for second diode leg; marked "+" on body. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Enhances transient immunity without external clamping components-reduces BOM count in automotive load-dump designs. |
| Low VFM at high current | 0.70V @ 8A enables <1.1W conduction loss per diode-critical for thermally constrained 12V/15A power modules. |
| High IFSM rating | 250A surge capacity supports hot-swap and capacitor-charging events in telecom power shelves. |
| RoHS-compliant finish | Tin-plated leads meet MIL-STD-202 solderability requirements and EU Directive Annex exemptions for high-temp solder. |
Applications
| DC-DC Converter Freewheeling | Input Polarity Protection |
|---|---|
Use Scenario: Used as synchronous rectifier in 12V→5V/15A buck converter secondary side. IC Role / Device Role / Timing Role: Dual-anode Schottky conducts return current during low-side switch off-time; common cathode ties to output rail. Use Value: 0.70V VFM reduces conduction loss by 40% vs. silicon diode, lowering thermal load on PCB heatsink. | Use Scenario: Placed in series with 24V input rail of industrial PLC module. IC Role / Device Role / Timing Role: Blocks reverse polarity faults up to 50V; conducts forward only when anode > cathode by >0.3V. Use Value: 250A IFSM withstands accidental short-circuit transients during field wiring errors. |
| Motor Drive Flyback Clamp | Redundant Power OR-ing |
Use Scenario: Clamps inductive kickback from 24V brushed DC motor driver H-bridge. IC Role / Device Role / Timing Role: Provides low-loss path for stored energy during PWM off-cycle; dual anodes allow split winding connection. Use Value: 700pF junction capacitance minimizes ringing and EMI vs. higher-C alternatives like SBL1660CT. | Use Scenario: OR-ing two 12V/10A redundant power supplies feeding telecom baseband card. IC Role / Device Role / Timing Role: Each anode connects to separate supply; common cathode delivers combined output with automatic fault isolation. Use Value: 3.5°C/W RθJC allows parallel operation without thermal runaway when both supplies are active. |
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-M3 | Same 50V VRRM, but 0.67V VFM @ 8A and 2.8°C/W RθJC; TO-220AC package (isolated tab). | Lower thermal resistance suits compact heatsinks; isolated tab eliminates grounding conflict in floating topologies. | Select when board layout requires electrically isolated mounting surface or tighter thermal budget. |
| ON Semiconductor MBR1650CT | Identical 50V/16A rating, but 0.72V VFM @ 8A and 4.0°C/W RθJC; same TO-220AB pinout. | Higher forward drop increases conduction loss by ~0.16W per diode at full load; slightly lower surge rating (220A). | Acceptable drop-in replacement where thermal margin exists and RoHS compliance is verified. |
Compared with VS-16CTH05-M3, SBL1650CT offers lower cost and standard tab connectivity but requires careful grounding; versus MBR1650CT, it delivers marginally better efficiency and surge robustness at identical footprint.
Availability
SBL1650CT is available at Aetrix Electronics and suitable for industrial DC-DC converters, telecom power shelves, motor drive flyback clamps, and redundant OR-ing circuits requiring stable component supply and long-term manufacturability planning.
Supply support for SBL1650CT 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 centers across Asia and manufacturing in China, Taiwan, and the US.
The SBL16xxCT series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for efficiency-critical 5–48V power conversion systems where low VFM and high surge tolerance are mandatory.
FAQ
Is SBL1650CT suitable for surface-mount assembly?
No. SBL1650CT uses a through-hole TO-220AB package with three gull-wing leads and an integral metal tab. It requires hole mounting and mechanical screw or clip attachment to a heatsink-not compatible with reflow or wave soldering processes used for SMT components.
What is the maximum continuous current at 100°C case temperature?
Per Figure 1 in DS23014 Rev. 8, the derated average forward current at TC = 100°C is approximately 14.5A. This assumes proper heatsinking and no additional ambient temperature penalties beyond case measurement point.
Does the metal tab connect internally to any pin?
Yes. The metal tab is electrically connected to Pin 2 (common cathode). This must be accounted for in PCB layout-any heatsink or mounting hardware contacting the tab becomes part of the cathode net and must be isolated from other potentials unless intentionally grounded.
Why is SBL1650CT marked "NOT RECOMMENDED FOR NEW DESIGN"?
Diodes Incorporated issued this notice due to planned obsolescence-the device remains fully functional and supported, but newer alternatives like the SBRA1650CT offer improved thermal performance and enhanced surge robustness. Legacy designs may continue using SBL1650CT under existing qualification.
SBL1650CT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io) (per Diode):
- 16A
- Voltage - Forward (Vf) (Max) @ If:
- 700 mV @ 8 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 50 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
SBL1650CT FAQ
1.How can I place an order for SBL1650CT through Aetrix?
Please submit a Request for Quotation (RFQ) for SBL1650CT 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 SBL1650CT reliable?
The price and inventory of SBL1650CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBL1650CT is usually 5 days.
3.What payment methods are accepted for SBL1650CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBL1650CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBL1650CT?
SBL1650CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBL1650CT 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 SBL1650CT?
For technical support, including SBL1650CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBL1650CT requirements.
6.How does Aetrix verify that SBL1650CT is sourced from the original manufacturer or authorized distributors?
All SBL1650CT 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 SBL1650CT meets industry standards.
7.What is the process for return or replacement of SBL1650CT?
All SBL1650CT units undergo pre-shipment inspection (PSI). If there is an issue with SBL1650CT, 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 SBL1650CT part is unused and in its original packaging.
Return procedure for SBL1650CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBL1650CT Tags
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BAV99-7-F
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