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Diodes Incorporated SBL1030CT
- Part No.:
- SBL1030CT
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SBL1030CT.pdf
- Description:
- DIODE ARR SCHOTT 30V 10A TO2203
- Quantity:
- Payment:
- Shipping:
Inventory:2,592
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Product details
Overview
SBL1030CT from Diodes Incorporated is a 10A dual common-cathode Schottky barrier rectifier in TO-220AB package, rated for 30V peak reverse voltage and 0.55V forward voltage drop at 5A/25°C. It delivers high surge capability (175A), low thermal resistance (5.5°C/W), and is designed for low-voltage, high-frequency DC-DC conversion, freewheeling, and polarity protection in power supplies and motor drives.
For engineers reviewing the SBL1030CT datasheet, SBL1030CT pinout, SBL1030CT application, or SBL1030CT equivalent, key selection criteria include its dual common-cathode configuration, 30V VRRM rating, 10A average output current at TC=95°C, junction-to-case thermal resistance, and RoHS-compliant bright tin terminals.
Technical Context
The SBL1030CT integrates two independent Schottky diodes sharing a common cathode terminal (Pin 2), enabling synchronous rectification or dual-path freewheeling in half-bridge topologies. Its guard ring die construction enhances transient immunity without external TVS components.
Designed for thermal performance under sustained load, it requires heatsink mounting to maintain 10A average current at TC = 95°C, with junction temperature limited to −65°C to +150°C and thermal resistance strictly defined at 5.5°C/W junction-to-case.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum non-repetitive reverse voltage before breakdown; sets safe operating limit in 24V bus polarity protection. |
| IO (TC = 95°C) | 10 A - Continuous average forward current per diode element when case temperature is held at 95°C via heatsink. |
| VFM @ 5A, 25°C | 0.55 V - Low conduction loss per diode; reduces power dissipation to ≤2.75W at 5A, improving system efficiency. |
| IFSM (8.3ms) | 175 A - Peak non-repetitive surge current tolerance; supports inrush handling in SMPS startup and motor commutation spikes. |
| RθJC | 5.5 °C/W - Thermal resistance from junction to case; determines minimum heatsink requirement for thermal management. |
| IRM @ 25°C | 0.5 mA - Reverse leakage at rated blocking voltage; ensures minimal standby power loss in battery-backed systems. |
| Cj @ 4V, 1MHz | 450 pF - Junction capacitance per diode; impacts high-frequency switching noise and EMI filter design in >100kHz converters. |
Pinout & Package
Package: TO-220AB molded plastic case (UL 94V-0), with metal tab electrically connected to Pin 2 (common cathode). Mounting hole centered on tab for heatsink attachment. Weight: 2.24 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Diode 1 | Input path for first rectifying element; connects to high-side switch node in half-bridge freewheeling. |
| Pin 2 | Common Cathode | Shared cathode terminal for both diodes; electrically tied to metal tab and must be isolated or grounded per layout. |
| Pin 3 | Anode of Diode 2 | Independent input path for second rectifying element; enables dual-output or interleaved converter designs. |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-cathode Schottky structure | Enables compact half-bridge synchronous rectification without discrete cathode tie; reduces PCB area vs. two single diodes. |
| Guard ring die construction | Improves ruggedness against voltage transients (e.g., inductive kickback) without requiring external clamping components. |
| Low VFM (0.55V @ 5A) | Minimizes conduction loss in 3.3–24V output rails, supporting >92% efficiency in 100–500kHz DC-DC converters. |
| 175A IFSM rating | Withstands repetitive motor startup surges and SMPS turn-on spikes without degradation, extending reliability in industrial controls. |
| TO-220AB with tin-plated leads | Ensures solderability per MIL-STD-202 Method 208 and RoHS compliance (exemptions applied per EU Directive Annex Notes 5 & 7). |
Applications
| DC-DC Converter Secondary Rectification | Motor Drive Freewheeling |
|---|---|
Use Scenario: Used in the secondary side of isolated flyback or forward converters delivering 5–24V outputs at up to 10A. IC Role / Device Role / Timing Role: Dual Schottky rectifier providing low-loss, high-speed unidirectional current flow during transformer reset and output conduction phases. Use Value: 0.55V VFM reduces conduction loss by ~35% vs. standard PN rectifiers, directly improving light-load efficiency and thermal margin. | Use Scenario: Mounted across H-bridge motor winding terminals to clamp inductive back-EMF during PWM switching. IC Role / Device Role / Timing Role: Freewheeling diode pair conducting reverse current during MOSFET off-time, preventing voltage overshoot on bridge nodes. Use Value: 175A IFSM rating handles repeated 10–50A motor stall currents without thermal runaway or parameter shift. |
| Polarity Protection Circuit | Redundant Power OR-ing |
Use Scenario: Placed in series with 12V/24V input rail to block reverse connection while passing forward current with minimal drop. IC Role / Device Role / Timing Role: Forward-biased rectifier allowing normal operation; reverse-biased blocking path preventing damage from miswired inputs. Use Value: 30V VRRM provides 2× safety margin over 12V nominal rails; 0.55V drop limits input voltage loss to <2.3% at 10A. | Use Scenario: Employed in dual-input redundant power systems (e.g., backup battery + main supply) to prevent backfeed between sources. IC Role / Device Role / Timing Role: Common-cathode configuration allows independent anode connections to each source, with shared output to load. Use Value: Dual-element integration eliminates need for discrete diode pairing, reducing BOM count and layout complexity while maintaining 10A per path. |
Availability
SBL1030CT is available at Aetrix Electronics and suitable for DC-DC converter secondary rectification, motor drive freewheeling, and polarity protection applications requiring stable component supply and legacy-compatible TO-220AB packaging.
Supply support for SBL1030CT 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, signal integrity, and protection solutions.
The SBLxxCT series belongs to Diodes' Schottky rectifier product line, engineered for high-current, low-VF operation in industrial power conversion and automotive-qualified systems where thermal robustness and surge resilience are critical.
FAQ
Is SBL1030CT still in active production?
No - Diodes Incorporated has officially discontinued the SBL1030CT. Aetrix Electronics maintains legacy inventory and offers qualified alternatives with verified form-fit-function compatibility, including thermal and electrical validation data for drop-in replacement assessment.
What is the electrical relationship between Pin 1 and Pin 3?
Pin 1 and Pin 3 are independent anodes, each connected to one Schottky diode element. Both share Pin 2 as the common cathode. There is no internal connection between Pin 1 and Pin 3; they operate as separate, isolated forward paths.
Can SBL1030CT be used without a heatsink?
No - at 10A average current, the device exceeds safe junction temperature without heatsinking. Derating curves show maximum IO drops to ~3.5A at TC = 25°C ambient. Heatsink mounting is mandatory to achieve rated 10A performance at TC = 95°C.
How does the guard ring construction improve reliability?
The guard ring mitigates edge breakdown under high dv/dt or transient overvoltage conditions by controlling electric field distribution at the silicon periphery. This increases ruggedness against inductive switching spikes and ESD events without adding external protection components.
SBL1030CT 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):
- 30 V
- Current - Average Rectified (Io) (per Diode):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 30 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
SBL1030CT FAQ
1.How can I place an order for SBL1030CT through Aetrix?
Please submit a Request for Quotation (RFQ) for SBL1030CT 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 SBL1030CT reliable?
The price and inventory of SBL1030CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBL1030CT is usually 5 days.
3.What payment methods are accepted for SBL1030CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBL1030CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBL1030CT?
SBL1030CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBL1030CT 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 SBL1030CT?
For technical support, including SBL1030CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBL1030CT requirements.
6.How does Aetrix verify that SBL1030CT is sourced from the original manufacturer or authorized distributors?
All SBL1030CT 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 SBL1030CT meets industry standards.
7.What is the process for return or replacement of SBL1030CT?
All SBL1030CT units undergo pre-shipment inspection (PSI). If there is an issue with SBL1030CT, 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 SBL1030CT part is unused and in its original packaging.
Return procedure for SBL1030CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBL1030CT Tags
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