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Diodes Incorporated SBL3050PT
- Part No.:
- SBL3050PT
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-3P-3, SC-65-3
- Datasheet:
-
SBL3050PT.pdf
- Description:
- DIODE ARRAY SCHOTT 50V 15A TO-3P
- Quantity:
- Payment:
- Shipping:
Inventory:8,163
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Product details
Overview
SBL3050PT from Diodes Incorporated is a 30A, 50V Schottky barrier rectifier in TO-3P package, featuring low forward voltage drop (0.55 V @ 15 A, 25°C), high surge capability (275 A, 8.3 ms), and thermal resistance of 2.0°C/W - used for polarity protection and free-wheeling in DC-DC converters and industrial power supplies.
For engineers reviewing the SBL3050PT datasheet, SBL3050PT pinout, SBL3050PT application, or SBL3050PT equivalent, key selection criteria include peak reverse voltage (50 V), average output current (30 A @ TC = 95°C), junction-to-case thermal resistance (2.0°C/W), and RoHS-compliant tin-plated terminals with UL 94V-0 molded plastic case.
Technical Context
This dual-common-cathode Schottky rectifier uses guard ring die construction to enhance transient protection and reduce leakage under high-temperature operation. Its low VF and high IF(AV) support high-efficiency, low-loss power conversion in compact thermal designs.
Rated for continuous operation from –65°C to +150°C, it delivers stable performance under capacitive load conditions (with 20% current derating) and exhibits typical junction capacitance of 1100 pF at 4 V reverse bias and 1 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit in 48 V bus applications. |
| IO @ TC=95°C | 30 A - Continuous average forward current when case temperature is held at 95°C using heatsink mounting. |
| VFM @ IF=15A, 25°C | 0.55 V - Low conduction loss enabling >92% efficiency in 12–48 V output stages. |
| IFSM (8.3 ms) | 275 A - Withstands brief inrush or fault currents without permanent degradation. |
| RθJc | 2.0 °C/W - Enables direct thermal coupling to heatsink; supports 60 W dissipation at ΔT = 120°C. |
| IRM @ 100°C | 75 mA - Reverse leakage remains manageable at elevated temperature, limiting standby loss. |
| CT @ 1 MHz, 4 V | 1100 pF - Limits high-frequency switching noise and EMI in SMPS freewheel paths. |
Pinout & Package
Package: TO-3P - Molded plastic case (UL 94V-0), 5.6 g mass, tin-plated terminals solderable per MIL-STD-202 Method 208. Polarity marked on body; dual common-cathode configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 (A1) | Input terminal for first rectifying element | Accepts AC or switched input; connects to transformer secondary or MOSFET drain in flyback/freewheel topology. |
| Anode 2 (A2) | Input terminal for second rectifying element | Enables dual-output or interleaved rectification; shares cathode for compact layout. |
| Cathode (K) | Common output node | Delivers rectified DC to output capacitor; requires low-inductance connection to minimize ringing. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves ruggedness against voltage transients and reduces IR drift at high Tj. |
| Low VF (0.55 V @ 15 A) | Reduces conduction loss by ~35% vs. comparable Si diodes, lowering heatsink requirements. |
| High IFSM (275 A) | Survives cold-start surges and short-circuit events without bond-wire fusing. |
| TO-3P mechanical robustness | Supports high-vibration environments and repeated thermal cycling in industrial enclosures. |
Applications
| DC-DC Converter Output Stage | Industrial Motor Drive Freewheeling |
|---|---|
Use Scenario: Secondary-side synchronous rectification replacement in isolated 24–48 V output DC-DC modules. IC Role / Device Role / Timing Role: Passive unidirectional current path providing low-loss output rectification. Use Value: 0.55 V VF minimizes power loss at 20–30 A loads, improving full-load efficiency by up to 1.8% over standard Si diodes. | Use Scenario: Clamp path across inductive motor windings during PWM turn-off in 3-phase inverters. IC Role / Device Role / Timing Role: Freewheeling diode absorbing stored inductive energy during MOSFET off-time. Use Value: 275 A IFSM rating handles repetitive 100 A+ motor kickback spikes without degradation. |
| Polarity Protection Circuit | Telecom Power Shelf Input |
Use Scenario: Reverse-voltage blocking at main DC input of embedded controllers and PLC I/O modules. IC Role / Device Role / Timing Role: Series-connected anode-in configuration preventing damage from miswired 24/48 V supplies. Use Value: 50 V VRRM provides 2× margin over 24 V nominal systems; low VF avoids unnecessary voltage drop. | Use Scenario: OR-ing diode in redundant -48 V telecom power distribution shelves. IC Role / Device Role / Timing Role: High-current, low-drop isolation element enabling hot-swap and redundancy management. Use Value: 30 A IO rating supports dual 20 A feeds; RθJc = 2.0°C/W allows direct heatsink mounting without thermal interface pads. |
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-30CPH05 | Same 50 V VRRM, but TO-247AC package; VF = 0.62 V @ 15 A; RθJc = 2.5°C/W. | Higher thermal resistance limits power density; requires larger heatsink area for same dissipation. | Prefer when legacy TO-247 footprint compatibility is required over thermal optimization. |
| ON Semiconductor MBR3050CT | Identical TO-220AB-based dual common-cathode package; VF = 0.70 V @ 15 A; IO = 30 A @ TC = 80°C. | Lower thermal rating reduces usable current in high-ambient environments; less suitable for 95°C case designs. | Select only if TO-220AB mechanical constraints prohibit TO-3P mounting. |
Compared with VS-30CPH05 and MBR3050CT, the SBL3050PT offers superior thermal performance (2.0°C/W) and lowest VF (0.55 V), making it optimal for space-constrained, high-efficiency 30 A rectification where heatsink real estate is limited.
Availability
SBL3050PT is available at Aetrix Electronics and suitable for DC-DC converter output stages, industrial motor drive freewheeling, and telecom power shelf inputs requiring stable component supply and long-term manufacturability assurance.
Supply support for SBL3050PT 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, serving industrial, computing, consumer, and communications markets with high-reliability components.
The SBL30xxPT series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for low-VF, high-surge industrial power conversion where thermal efficiency and transient robustness are critical.
FAQ
Is SBL3050PT suitable for use in automotive applications?
No - SBL3050PT is not AEC-Q101 qualified and carries a "NOT RECOMMENDED FOR NEW DESIGN" notice per Diodes' datasheet. It lacks automotive-grade screening, extended temperature validation, and PPAP documentation required for vehicle ECUs or battery systems.
What is the maximum allowable case temperature for continuous 30 A operation?
The datasheet specifies IO = 30 A at TC = 95°C. Exceeding this case temperature requires linear derating per Figure 1; at TC = 110°C, maximum IO drops to ~24 A. Thermal design must ensure heatsink interface maintains TC ≤ 95°C under worst-case ambient and airflow conditions.
Can SBL3050PT replace a single-diode TO-220 part in existing layouts?
No - SBL3050PT uses TO-3P (larger, 3-pin, dual-anode) while TO-220 parts are single-diode, 2-pin packages. Direct replacement would require PCB redesign, new heatsink mounting, and verification of dual-anode routing and shared cathode current sharing.
Does SBL3050PT have integrated ESD or transient protection?
It features guard ring die construction that improves transient immunity, but no dedicated ESD protection circuitry. External TVS devices are recommended for IEC 61000-4-2/4-4/4-5 compliance in harsh environments; the 275 A IFSM rating applies only to 8.3 ms half-sine surges, not nanosecond ESD events.
SBL3050PT 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):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 700 mV @ 15 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 mA @ 50 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-3P
SBL3050PT FAQ
1.How can I place an order for SBL3050PT through Aetrix?
Please submit a Request for Quotation (RFQ) for SBL3050PT 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 SBL3050PT reliable?
The price and inventory of SBL3050PT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBL3050PT is usually 5 days.
3.What payment methods are accepted for SBL3050PT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBL3050PT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBL3050PT?
SBL3050PT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBL3050PT 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 SBL3050PT?
For technical support, including SBL3050PT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBL3050PT requirements.
6.How does Aetrix verify that SBL3050PT is sourced from the original manufacturer or authorized distributors?
All SBL3050PT 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 SBL3050PT meets industry standards.
7.What is the process for return or replacement of SBL3050PT?
All SBL3050PT units undergo pre-shipment inspection (PSI). If there is an issue with SBL3050PT, 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 SBL3050PT part is unused and in its original packaging.
Return procedure for SBL3050PT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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