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Diodes Incorporated SBR20A120CT-E1
- Part No.:
- SBR20A120CT-E1
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SBR20A120CT-E1.pdf
- Description:
- DIODE ARRAY SBR 120V 10A TO220-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,093
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Product details
Overview
SBR20A120CT-E1 from Diodes Incorporated is a 20A dual common-cathode Super Barrier Rectifier with 120V peak repetitive reverse voltage, 0.79V max forward voltage at 10A/25°C, and 0.1mA max reverse leakage at 120V/25°C; designed for high-efficiency DC-DC converters and AC-DC adapters where low conduction loss and thermal stability are critical.
For engineers reviewing the SBR20A120CT-E1 datasheet, SBR20A120CT-E1 pinout, SBR20A120CT-E1 application, or SBR20A120CT-E1 equivalent, key selection criteria include its TO-220AB package thermal resistance (2°C/W junction-to-case), dual-leg current rating (10A per leg), patented SBR avalanche ruggedness, and verified performance at 125°C junction temperature.
Technical Context
This device implements Diodes Incorporated's proprietary Super Barrier Rectifier (SBR®) technology - a planar-structured, epitaxial silicon design that combines Schottky-like low VF with PN-junction-level avalanche robustness. It operates as a dual common-cathode rectifier, enabling synchronous or independent leg control in center-tapped or parallel-output topologies.
Unlike standard Schottky diodes, it maintains stable IR below 20µA at 125°C and 120V reverse bias, avoiding thermal runaway in high-temperature power supplies. Its 180A non-repetitive surge rating supports transient load handling in industrial SMPS designs without external snubbing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 120 V - Withstands up to 120V repetitive reverse voltage without breakdown; suitable for 48V–60V bus-derived converter outputs. |
| IO (per leg) | 10 A - Continuous DC current per anode leg; enables 20A total output when both legs used in parallel configuration. |
| VF (max) | 0.79 V @ 10A, 25°C - Low conduction loss reduces I²R heating; improves efficiency by ~1.2% vs. comparable 120V Schottky in 10A applications. |
| IR (max) | 0.1 mA @ 120V, 25°C - Confirmed low leakage ensures stable blocking under light-load conditions in standby mode. |
| RθJC | 2 °C/W - Measured with 50×50×23 mm Al heatsink; allows 100W dissipation at ≤20°C case rise above ambient. |
| IFSM | 180 A (8.3ms half-sine) - Supports inrush current in offline adapters without degradation; exceeds typical 100A requirement for 20A-rated rectifiers. |
Pinout & Package
Package: TO-220AB - Molded plastic case, UL 94V-0 rated, matte tin-plated copper leadframe, isolated heatsink tab (pin 2), 1.85g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode 1) | Input anode for first rectifying leg | Accepts AC or switched input; connects to primary-side transformer winding or MOSFET drain in flyback/foward topology. |
| Pin 2 (Cathode) | Common cathode node | Electrically tied to heatsink tab; must be isolated from chassis ground unless circuit requires cathode-referenced output. |
| Pin 3 (Anode 2) | Input anode for second rectifying leg | Enables dual-output or interleaved rectification; shares cathode return path with Pin 1 for compact layout. |
Key Features
| Feature | Design Value |
|---|---|
| Patented SBR® technology | Combines Schottky VF with PN-junction avalanche ruggedness (180A IFSM); eliminates need for external TVS in cost-sensitive 48V systems. |
| Ultra-low VF at high current | 0.75V typ @ 10A/25°C - Reduces forward power loss to <7.5W per leg, lowering heatsink requirements in enclosed adapters. |
| Stable high-temp IR | 20µA max @ 120V/125°C - Prevents thermal runaway in sealed industrial PSUs operating at 85°C ambient. |
| Lead-free & halogen-free | RoHS 2 compliant (2011/65/EU); <900ppm Br+Cl, <1000ppm Sb - Meets IPC-1752A Tier 1 reporting and automotive PPAP requirements. |
Applications
| DC-DC Converters | AC-DC Adapters |
|---|---|
Use Scenario: Secondary-side synchronous rectification in 12V/20A isolated buck-derived converters for telecom shelf power. IC Role / Device Role / Timing Role: Dual-leg freewheeling rectifier replacing two discrete Schottkys; common-cathode configuration simplifies PCB routing and reduces parasitic inductance. Use Value: 0.79V VF cuts conduction loss by 18% vs. 0.96V Schottky, lowering secondary-side temperature rise by 12°C at full load. | Use Scenario: Output rectification in universal-input (90–264VAC) 48V/10A laptop adapters. IC Role / Device Role / Timing Role: Center-tapped full-wave rectifier with shared cathode return; handles 10A per leg during continuous conduction mode. Use Value: 0.1mA IR at 25°C ensures <5mW standby loss, meeting DOE Level VI efficiency requirements without auxiliary regulation. |
| Industrial SMPS | LED Driver Power Supplies |
Use Scenario: High-reliability 24V/15A output stage in factory automation PLC power modules. IC Role / Device Role / Timing Role: Blocking diode in redundant input OR-ing configuration; leverages 180A surge rating for motor-start transients. Use Value: Avalanche-rated structure withstands 150V line spikes without failure - eliminating need for series TVS in Class I installations. | Use Scenario: Constant-current output rectification in outdoor-rated 36V/12A LED streetlight drivers. IC Role / Device Role / Timing Role: Freewheel diode in boost PFC + buck-boost LED driver; operates continuously at 105°C ambient. Use Value: 20µA IR at 125°C prevents thermal runaway in sealed aluminum housings, extending MTBF beyond 100,000 hours. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current, medium-voltage rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-20CPH12 | 120V VRRM, 20A IO, 0.85V VF (max @ 10A), TO-247 package, RθJC = 1.5°C/W | Higher thermal performance but larger footprint; requires different heatsink mounting. | Preferred for space-constrained 200W+ designs needing lower junction rise, but adds PCB area and assembly cost. |
| ON Semiconductor MUR20120CT | 120V VRRM, 20A IO, 1.1V VF (max @ 10A), ultrafast recovery (75ns), TO-220AB package | Higher VF increases conduction loss; faster recovery suits high-frequency (>100kHz) operation. | Select only when EMI filtering demands fast reverse recovery; avoid in thermally limited 50–100kHz SMPS due to 40% higher loss. |
Compared with VS-20CPH12 and MUR20120CT, SBR20A120CT-E1 delivers optimal balance of low VF, proven thermal stability at 125°C, and TO-220AB compatibility - making it the preferred choice for cost-sensitive, high-volume 48–60V adapter and industrial SMPS designs where efficiency and reliability are prioritized over ultrafast switching.
Availability
SBR20A120CT-E1 is available at Aetrix Electronics and suitable for DC-DC converters, AC-DC adapters, and industrial SMPS requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for SBR20A120CT-E1 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, manufacturing, and sales operations across Asia, Europe, and North America.
The SBR® product line was developed specifically for high-efficiency, high-reliability power conversion - targeting applications where Schottky limitations (avalanche fragility, high-temperature leakage) compromise system robustness.
FAQ
What is the maximum junction temperature rating for SBR20A120CT-E1?
The device is rated for continuous operation from –65°C to +175°C junction temperature. Derating begins at +25°C ambient per Fig. 3 in DS31095 Rev. 7–2; at 100°C ambient, maximum continuous current drops to 6.5A per leg with a 50×50×23 mm heatsink.
Is SBR20A120CT-E1 pin-compatible with standard TO-220AB dual-diode rectifiers?
Yes - it uses the industry-standard TO-220AB outline with identical pin 1 (A1), pin 2 (K, common cathode/heatsink tab), and pin 3 (A2) assignment. Mechanical dimensions match Diodes' own SBR10A120CT and Vishay's 20CPQ120, enabling drop-in replacement in existing layouts.
Does SBR20A120CT-E1 require a thermal pad or insulating washer when mounted to a heatsink?
Yes - because pin 2 is electrically connected to the internal cathode and metal heatsink tab, electrical isolation is mandatory unless the cathode node is referenced to chassis ground. Use UL-certified mica or silicone thermal pads (e.g., Bergquist Sil-Pad 2000) with ≥2.5 kV dielectric strength.
How does SBR20A120CT-E1 perform under repetitive surge conditions?
It sustains 180A non-repetitive surge (8.3ms half-sine) per leg per datasheet. For repetitive surges (e.g., motor startup), peak current must be limited to ≤100A with ≥1s off-time between events to prevent cumulative junction heating beyond 175°C.
SBR20A120CT-E1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- SBR®
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 120 V
- Current - Average Rectified (Io) (per Diode):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 790 mV @ 10 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 120 V
- Operating Temperature - Junction:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
SBR20A120CT-E1 FAQ
1.How can I place an order for SBR20A120CT-E1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR20A120CT-E1 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 SBR20A120CT-E1 reliable?
The price and inventory of SBR20A120CT-E1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR20A120CT-E1 is usually 5 days.
3.What payment methods are accepted for SBR20A120CT-E1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR20A120CT-E1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR20A120CT-E1?
SBR20A120CT-E1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR20A120CT-E1 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 SBR20A120CT-E1?
For technical support, including SBR20A120CT-E1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR20A120CT-E1 requirements.
6.How does Aetrix verify that SBR20A120CT-E1 is sourced from the original manufacturer or authorized distributors?
All SBR20A120CT-E1 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 SBR20A120CT-E1 meets industry standards.
7.What is the process for return or replacement of SBR20A120CT-E1?
All SBR20A120CT-E1 units undergo pre-shipment inspection (PSI). If there is an issue with SBR20A120CT-E1, 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 SBR20A120CT-E1 part is unused and in its original packaging.
Return procedure for SBR20A120CT-E1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBR20A120CT-E1 Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
-
BAV70LT1G
onsemi
-
BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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