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Diodes Incorporated SBL1650PT
- Part No.:
- SBL1650PT
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-3P-3, SC-65-3
- Datasheet:
-
SBL1650PT.pdf
- Description:
- DIODE ARRAY SCHOTT 50V 16A TO-3P
- Quantity:
- Payment:
- Shipping:
Inventory:8,898
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Product details
Overview
SBL1650PT from Diodes Incorporated is a 16A, 50V TO-3P-packaged Schottky barrier rectifier with 0.55V forward voltage at 8.0A (25°C), 250A non-repetitive surge capability, and 3.5°C/W junction-to-case thermal resistance-designed for low-voltage, high-frequency inverters and polarity protection in industrial power supplies.
For engineers reviewing the SBL1650PT datasheet, SBL1650PT pinout, SBL1650PT application, or SBL1650PT equivalent, key selection criteria include its 50V VRRM, 16A average output current at 95°C case temperature, low 700pF junction capacitance at 4V reverse bias, and RoHS-compliant bright tin-plated leads solderable per MIL-STD-202.
Technical Context
This discrete Schottky rectifier uses guard ring die construction to enhance transient immunity and reduce leakage under high-temperature reverse bias. Its low VF and high IFSM support efficient energy recovery in freewheeling paths and robust input-stage polarity protection.
The device operates across –65°C to +150°C with thermal derating defined up to 95°C case temperature. Junction-to-case thermal resistance of 3.5°C/W requires heatsink mounting for sustained 16A conduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum peak repetitive reverse voltage before breakdown; sets safe DC blocking limit in 48V systems. |
| IO @ TC = 95°C | 16 A - Continuous average forward current rating when case is actively cooled to 95°C. |
| VFM @ IF = 8.0A | 0.55 V - Forward voltage drop at mid-load; determines conduction loss (4.4W at 8A) and thermal rise. |
| IFSM (8.3ms) | 250 A - Single half-sine surge rating; supports motor startup or capacitor-charging transients without failure. |
| RJC | 3.5 °C/W - Thermal resistance from junction to case; defines minimum heatsink requirement for thermal management. |
| CT @ 1MHz, 4V | 700 pF - Junction capacitance; impacts high-frequency switching noise and EMI in inverter outputs. |
| IRM @ 100°C | 50 mA - Max reverse leakage at elevated temperature; affects standby power loss in polarity protection circuits. |
Pinout & Package
TO-3P package: isolated metal tab (cathode), three leads (anode, cathode, case-connected tab); molded plastic body rated UL 94V-0, 5.6g mass, lead finish bright tin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Current entry point | Connected to input source or inductive load return; must withstand full surge current path. |
| Cathode (Lead 2) | Current exit point | Common output node; electrically tied to metal tab for low-inductance heatsinking. |
| Metal Tab (Case) | Thermal & electrical cathode | Internally bonded to cathode; provides primary thermal path and must be electrically isolated unless used as cathode return. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves transient voltage immunity and reduces localized field crowding during reverse-bias surges. |
| Low VF (0.55V @ 8A) | Reduces conduction losses by ~30% vs. comparable Si diodes, lowering thermal load in compact power stages. |
| 250A IFSM | Enables reliable operation during 120Hz line-frequency surges without derating in UPS or welder designs. |
| RoHS-compliant tin plating | Ensures compatibility with lead-free reflow profiles and long-term solder joint reliability per MIL-STD-202. |
| TO-3P mechanical robustness | Supports >5.6g mass and high-power dissipation in industrial environments with vibration and thermal cycling. |
Applications
| DC Power Input Protection | High-Frequency Inverter Output |
|---|---|
Use Scenario: Reverse-polarity protection at 48V DC input of industrial PLC power modules. IC Role / Device Role / Timing Role: Discrete Schottky rectifier configured as series-blocking element with cathode grounded. Use Value: 0.55V VF limits insertion loss to <2.8W at 5A, avoiding thermal shutdown during continuous operation. | Use Scenario: Freewheeling path in 20kHz resonant LLC converter secondary side. IC Role / Device Role / Timing Role: Low-capacitance (700pF) Schottky clamp preventing voltage spikes during MOSFET turn-off. Use Value: Fast recovery and minimal stored charge reduce switching losses and EMI generation at 20kHz. |
| Capacitor-Charging Circuit | Motor Drive Freewheeling |
Use Scenario: Inrush limiting and polarity control in telecom battery backup chargers. IC Role / Device Role / Timing Role: Series-connected rectifier handling 16A average charge current with 250A surge tolerance. Use Value: 3.5°C/W RJC enables direct heatsink mounting to sustain 16A without forced air cooling. | Use Scenario: Inductive kick clamping in 3-phase BLDC motor gate driver power rails. IC Role / Device Role / Timing Role: Cathode-tied-to-rail Schottky providing low-loss return path for back-EMF current. Use Value: 50V VRRM safely blocks regenerated voltage peaks up to 45V in 48V motor systems. |
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 TO-247AC package, 50V VRRM, but 0.62V VF @ 8A and 200A IFSM. | Limited surge margin in capacitor-charging applications requiring 250A tolerance. | Prefer where TO-247 footprint compatibility outweighs surge headroom needs. |
| ON Semiconductor MBR1650CT | TO-220AB dual common-cathode configuration, same 50V/16A rating, but 0.72V VF and no guard ring. | Higher conduction loss and lower transient immunity than SBL1650PT in noisy industrial environments. | Select only if dual-diode topology and cost sensitivity override thermal and ruggedness requirements. |
Compared with VS-16CTH05-M3 and MBR1650CT, SBL1650PT delivers superior surge robustness (250A vs. ≤200A) and lower conduction loss (0.55V vs. ≥0.62V), making it optimal for high-reliability 48V power conversion where thermal margin and transient immunity are critical.
Availability
SBL1650PT is available at Aetrix Electronics and suitable for industrial PLC power inputs, 48V telecom battery chargers, motor drive freewheeling paths, and high-frequency inverter outputs requiring stable component supply despite end-of-life status.
Supply support for SBL1650PT 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-efficiency power management and signal integrity solutions for industrial, computing, and consumer markets.
The SBL16xxPT series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for low-loss, high-surge industrial power conversion where thermal performance and transient ruggedness are prioritized over cost-sensitive consumer applications.
FAQ
Is SBL1650PT still in production?
No-SBL1650PT is officially obsolete and discontinued per Diodes Incorporated's DS23046 Rev. 5 (August 2015). No new manufacturing lots exist, and Diodes does not list a direct replacement. Aetrix Electronics maintains limited legacy stock with full traceability and offers engineering support for last-time buy and obsolescence mitigation planning.
What is the correct mounting orientation for the TO-3P metal tab?
The metal tab is electrically connected to the cathode and serves as the primary thermal interface. It must be mounted to an insulated heatsink using a mica washer or thermally conductive insulator, with mechanical torque limited to 0.5–0.7 N·m to avoid die fracture. Electrical isolation from chassis ground is required unless the circuit design intentionally references cathode to system ground.
Can SBL1650PT replace SBL1645PT in existing designs?
Yes-SBL1650PT shares identical TO-3P packaging, pinout, and thermal characteristics with SBL1645PT, differing only in VRRM (50V vs. 45V) and VFM (0.55V vs. 0.70V). The higher blocking voltage and lower forward drop improve margin in 48V systems, provided layout clearance supports 50V creepage requirements.
What is the maximum allowable case temperature for continuous 16A operation?
The datasheet specifies IO = 16A only at TC = 95°C. Operation above this temperature requires linear derating: Fig. 1 shows ~12A at 100°C and ~8A at 110°C. Sustained 16A conduction demands active heatsinking or forced airflow to maintain case temperature at or below 95°C.
SBL1650PT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-3P-3, SC-65-3
- 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-3P
SBL1650PT FAQ
1.How can I place an order for SBL1650PT through Aetrix?
Please submit a Request for Quotation (RFQ) for SBL1650PT 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 SBL1650PT reliable?
The price and inventory of SBL1650PT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBL1650PT is usually 5 days.
3.What payment methods are accepted for SBL1650PT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBL1650PT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBL1650PT?
SBL1650PT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBL1650PT 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 SBL1650PT?
For technical support, including SBL1650PT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBL1650PT requirements.
6.How does Aetrix verify that SBL1650PT is sourced from the original manufacturer or authorized distributors?
All SBL1650PT 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 SBL1650PT meets industry standards.
7.What is the process for return or replacement of SBL1650PT?
All SBL1650PT units undergo pre-shipment inspection (PSI). If there is an issue with SBL1650PT, 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 SBL1650PT part is unused and in its original packaging.
Return procedure for SBL1650PT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBL1650PT Tags
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