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Diodes Incorporated SBL2035CT
- Part No.:
- SBL2035CT
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SBL2035CT.pdf
- Description:
- DIODE ARR SCHOTT 35V 20A TO2203
- Quantity:
- Payment:
- Shipping:
Inventory:8,831
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Product details
Overview
SBL2035CT from Diodes Incorporated is a 20A, 35V dual common-cathode Schottky barrier rectifier in TO-220AB package, designed for low-voltage DC/DC conversion and polarity protection circuits with 0.75V forward voltage at 10A and 2.8°C/W junction-to-case thermal resistance.
For engineers reviewing the SBL2035CT datasheet, SBL2035CT pinout, SBL2035CT application, or SBL2035CT equivalent, key selection criteria include peak repetitive reverse voltage (35V), average rectified output current (20A @ TC=95°C), non-repetitive surge capability (250A), thermal resistance (2.8°C/W), and junction capacitance (650pF at 4V).
Technical Context
This dual-diode configuration shares a common cathode terminal (Pin 2), with independent anodes on Pins 1 and 3 - enabling synchronous rectification or dual-output supply paths in compact space-constrained designs. Its guard-ring die construction provides transient immunity without external TVS components.
Rated for continuous operation from –65°C to +150°C, it supports high-frequency switching up to several hundred kHz in SMPS outputs and free-wheeling applications where low VF and fast recovery (<10ns) minimize conduction loss and EMI generation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 35 V - Maximum reverse blocking capability before breakdown in repetitive AC or transient conditions |
| IO | 20 A @ TC=95°C - Continuous DC output current rating when mounted on heatsink |
| VFM | 0.75 V @ IF=10A, TC=25°C - Low conduction loss enabling >92% efficiency in 5–12V output stages |
| IFSM | 250 A @ 8.3ms half-sine - Withstands inrush and short-circuit surges without failure |
| RJC | 2.8 °C/W - Enables thermal design with standard TO-220 heatsinks for 20A sustained load |
| Cj | 650 pF @ VR=4V, f=1MHz - Limits high-frequency displacement current and EMI in fast-switching nodes |
Pinout & Package
TO-220AB plastic package with isolated mounting tab (non-electrical), 3-terminal configuration: Pins 1 and 3 are anodes, Pin 2 is common cathode. Mounting hole centered between Pins 1 and 3; tab electrically isolated per JEDEC TO-220AB standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Diode 1 | Input path for first rectified branch; connects to transformer secondary or switch node |
| Pin 2 | Common Cathode | Shared output node for both diodes; ties to output capacitor positive rail |
| Pin 3 | Anode of Diode 2 | Input path for second rectified branch; enables dual-output or interleaved topology |
Key Features
| Feature | Design Value |
|---|---|
| Guard-ring die construction | Provides inherent transient voltage suppression without external clamping components |
| Low forward voltage drop | 0.75V at 10A reduces power loss by ~30% vs. comparable silicon rectifiers |
| High surge current rating | 250A single-half-sine withstands cold-start inrush in industrial power supplies |
| UL 94V-0 flammability rating | Meets safety requirements for enclosed power equipment without flame-retardant additives |
Applications
| Server VRM Output Stage | Automotive Infotainment Power |
|---|---|
Use Scenario: 12V input to 3.3V/5V dual-rail buck converter in data center server voltage regulator modules. IC Role / Device Role / Timing Role: Dual-anode Schottky rectifier providing synchronous rectification for two parallel output phases. Use Value: 0.75V VF minimizes conduction loss at 20A per phase, improving full-load efficiency by 1.8% over Si alternatives. | Use Scenario: Reverse-polarity and load-dump protection in automotive head unit 5V auxiliary supply. IC Role / Device Role / Timing Role: Polarity guard and freewheeling diode across DC-DC controller output stage. Use Value: 35V VRRM withstands ISO 7637-2 pulse 5a (±110V), while 250A IFSM absorbs battery disconnect transients. |
| Industrial PLC Power Input | Telecom DC Distribution Board |
Use Scenario: Input rectification and hold-up support for 24VAC-to-DC power supply in programmable logic controllers. IC Role / Device Role / Timing Role: Half-wave bridge leg with common-cathode output feeding bulk capacitor bank. Use Value: 2.8°C/W RJC allows direct heatsink mounting without thermal interface pads, simplifying mechanical layout. | Use Scenario: OR-ing diode in redundant -48V telecom distribution board with hot-swap capability. IC Role / Device Role / Timing Role: Dual-path current combining diode enabling seamless failover between two -48V sources. Use Value: Dual-anode structure eliminates need for two discrete TO-220 parts, reducing PCB area by 35% and thermal coupling risk. |
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-20CPH03-M3 | 30V VRRM, 0.52V VF @ 10A, TO-247AC package | Limited to ≤30V systems; higher thermal mass requires larger heatsink | Preferred where lower VF outweighs voltage margin needs and board space permits TO-247 |
| ON Semiconductor MBR2035CT | Identical 35V/20A rating, but 0.82V VF @ 10A and 3.5°C/W RJC | Higher conduction loss and thermal resistance reduce efficiency in thermally constrained enclosures | Valid drop-in for legacy designs; not recommended for new thermal-limited layouts |
Compared with VS-20CPH03-M3, SBL2035CT offers +5V reverse margin and TO-220AB footprint compatibility; versus MBR2035CT, it delivers 0.07V lower VF and 0.7°C/W better thermal performance - critical for high-density 20A power rails.
Availability
SBL2035CT is available at Aetrix Electronics and suitable for server VRMs, automotive infotainment power supplies, and industrial PLC power inputs requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production lots.
Supply support for SBL2035CT 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 Malaysia.
The SBL20xxCT series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for high-efficiency, low-voltage DC/DC conversion in computing, telecom, and industrial power systems.
FAQ
Is SBL2035CT RoHS compliant and lead-free?
Yes, SBL2035CT is RoHS compliant and lead-free per Diodes Incorporated's PPAP documentation (DS23015 Rev. F-2). The device uses matte tin-plated leads and meets JEDEC J-STD-020 moisture sensitivity level 1, with no exemptions required under EU Directive 2011/65/EU.
Can SBL2035CT be used in parallel for higher current?
No - SBL2035CT is not characterized for parallel operation due to mismatched forward voltage curves between units. Diodes Incorporated specifies derating for ambient temperature and case temperature only; parallel use risks thermal runaway without active current balancing circuitry.
What is the maximum allowable case temperature during continuous operation?
The absolute maximum case temperature is +150°C, but the rated average output current drops to zero above +95°C per Fig. 1 in DS23015. For 20A continuous operation, TC must be held at or below 95°C using appropriate heatsinking and airflow per the 2.8°C/W RJC specification.
Does the common cathode pin support bidirectional current flow?
No - Pin 2 is exclusively the cathode terminal for both internal diodes. Current flows only from Pins 1 or 3 to Pin 2. Reverse biasing Pin 2 relative to either anode exceeds VRRM and risks permanent junction damage; it is not a bidirectional or center-tap configuration.
SBL2035CT 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):
- 35 V
- Current - Average Rectified (Io) (per Diode):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 mA @ 35 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
SBL2035CT FAQ
1.How can I place an order for SBL2035CT through Aetrix?
Please submit a Request for Quotation (RFQ) for SBL2035CT 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 SBL2035CT reliable?
The price and inventory of SBL2035CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBL2035CT is usually 5 days.
3.What payment methods are accepted for SBL2035CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBL2035CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBL2035CT?
SBL2035CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBL2035CT 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 SBL2035CT?
For technical support, including SBL2035CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBL2035CT requirements.
6.How does Aetrix verify that SBL2035CT is sourced from the original manufacturer or authorized distributors?
All SBL2035CT 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 SBL2035CT meets industry standards.
7.What is the process for return or replacement of SBL2035CT?
All SBL2035CT units undergo pre-shipment inspection (PSI). If there is an issue with SBL2035CT, 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 SBL2035CT part is unused and in its original packaging.
Return procedure for SBL2035CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBL2035CT Tags
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