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Diodes Incorporated SBR20A120CTFP
- Part No.:
- SBR20A120CTFP
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3 Full Pack, Isolated Tab
- Datasheet:
-
SBR20A120CTFP.pdf
- Description:
- DIODE ARR SBR 120V 10A ITO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,349
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Product details
Overview
SBR20A120CTFP from Diodes Incorporated is a 20A dual common-cathode Super Barrier Rectifier in ITO-220AB package, rated for 120V peak repetitive reverse voltage, with max forward voltage of 0.79V at 10A/25°C and max reverse leakage of 0.1mA at 120V/25°C; it serves as a high-efficiency freewheel or output rectifier in DC-DC converters and AC-DC adapters.
For engineers reviewing the SBR20A120CTFP datasheet, SBR20A120CTFP pinout, SBR20A120CTFP application, or SBR20A120CTFP equivalent, key selection criteria include thermal resistance (4°C/W junction-to-case), avalanche ruggedness versus Schottky diodes, high-temperature reverse leakage stability up to +125°C, and RoHS-compliant green packaging with matte tin terminals.
Technical Context
This device implements Diodes Incorporated's patented SBR® technology - a planar-structured silicon rectifier engineered to combine low forward voltage drop with superior avalanche energy handling over conventional Schottky diodes. Its dual-leg configuration shares a common cathode, enabling synchronous rectification or parallel current paths in center-tapped topologies.
Thermal performance is defined by a 4°C/W junction-to-case resistance (ITO-220AB, with 50×50×23 mm Al heatsink), and electrical behavior remains stable across –65°C to +175°C operating range. Reverse leakage stays below 20µA at 125°C/120V, mitigating thermal runaway risk in high-density power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 120 V - Maximum non-repetitive reverse voltage the device blocks without breakdown; sets upper limit for input/output voltage rails in isolated/non-isolated converters. |
| IO (per leg) | 10 A - Continuous average forward current per anode leg at TA=25°C; supports 20A total device rating in dual-leg configuration. |
| VF (max) | 0.79 V @ 10A, 25°C - Low conduction loss enables >95% efficiency in 12V-output DC-DC stages and reduces heatsink requirements. |
| IR (max) | 0.1 mA @ 120V, 25°C - Ultra-low leakage preserves regulation margin and prevents cross-conduction in multi-phase designs. |
| RθJC | 4 °C/W - Junction-to-case thermal resistance (ITO-220AB) determines minimum heatsink size needed to maintain TJ ≤ 175°C under full load. |
| IFSM | 180 A - Non-repetitive surge rating allows survival of inrush currents during cold-start or output short recovery. |
Pinout & Package
Package: ITO-220AB - Insulated TO-220 variant with electrically isolated tab (2000 VAC isolation, 3 s), molded plastic body (UL 94V-0), matte tin-plated copper leadframe, and 1.65 g mass. Mounting tab is electrically isolated from internal circuitry.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode A) | Anode of first rectifier leg | Connects to transformer secondary or switching node; carries up to 10A continuous forward current. |
| Pin 2 (Cathode) | Common cathode node | Shared output terminal for both legs; must be routed with low-inductance path to minimize switching noise. |
| Pin 3 (Anode B) | Anode of second rectifier leg | Enables dual-output or center-tapped full-wave rectification; electrically independent from Pin 1. |
Key Features
| Feature | Design Value |
|---|---|
| Patented SBR® technology | Delivers Schottky-like VF with MOSFET-level avalanche ruggedness (180A IFSM), eliminating need for external snubbers in flyback or LLC resonant converters. |
| Ultra-low VF at high temperature | 0.65V typ @ 10A/125°C - maintains efficiency in thermally constrained enclosures without derating. |
| Stable high-temp IR | 20 µA max @ 120V/125°C - avoids thermal runaway in ambient >85°C applications like enclosed LED drivers. |
| Green, RoHS-compliant construction | Halogen- and antimony-free molding compound (<900 ppm Br+Cl, <1000 ppm Sb); meets EU Directive 2011/65/EU without exemptions. |
Applications
| DC-DC Converter Output Rectification | AC-DC Adapter Secondary Side |
|---|---|
Use Scenario: High-frequency synchronous rectification in 300–500 kHz isolated buck-derived topologies delivering 12–24 V at 10–20 A. IC Role / Device Role / Timing Role: Dual-leg common-cathode rectifier replacing two discrete Schottkys; handles bidirectional current flow during dead-time intervals. Use Value: 0.79 V VF reduces conduction loss by ~15% vs. comparable 120V Schottky, lowering case temperature by up to 12°C at full load. | Use Scenario: Secondary-side full-wave rectification in universal-input (90–264 VAC) offline adapters powering consumer electronics. IC Role / Device Role / Timing Role: Freewheel diode in discontinuous conduction mode (DCM) flyback; clamps transformer leakage inductance energy. Use Value: 180 A IFSM withstands repeated 100 A surge events during no-load to full-load transitions without degradation. |
| Industrial Power Supply Input Stage | Telecom DC Distribution Board |
Use Scenario: Input rectification in 48 V intermediate bus converters used in programmable logic controllers and motor drives. IC Role / Device Role / Timing Role: Blocking diode preventing backfeed from downstream 48 V rail into upstream 380 V PFC stage during fault conditions. Use Value: 120 V VRRM provides 2× safety margin over nominal 48 V bus, while 0.1 mA IR ensures minimal standby power drain. | Use Scenario: OR-ing diode in redundant -48 V DC distribution systems for base station radios and optical line terminals. IC Role / Device Role / Timing Role: Hot-swap isolation element ensuring seamless switchover between primary and backup power feeds. Use Value: Common-cathode dual configuration allows single-package implementation of dual OR-ing path with matched VF tracking. |
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 |
|---|---|---|---|
| SBRT20A120CTFP | Same die, enhanced thermal pad adhesion and tighter VF binning (0.72–0.78 V); RθJC improved to 3.7°C/W. | Better suited for forced-air-cooled telecom rectifiers requiring <100°C junction rise at 20A. | Select when thermal margin is critical and cost premium ≤12% is acceptable. |
| MBR20120CT | Standard Schottky; higher VF (0.92 V max), lower IFSM (120 A), no avalanche rating, non-isolated TO-220AB package. | Limited to low-ambient, non-safety-isolated applications due to lack of 2000 VAC isolation and thermal runaway risk above 100°C. | Only consider for cost-sensitive, non-isolated 12 V outputs where leakage and surge robustness are secondary. |
Compared with SBRT20A120CTFP, SBR20A120CTFP offers identical functionality at broader thermal tolerance but slightly higher RθJC; versus MBR20120CT, it delivers superior reliability in isolated, high-temperature, or high-surge environments - justifying its use in industrial and telecom infrastructure.
Availability
SBR20A120CTFP is available at Aetrix Electronics and suitable for DC-DC converter output rectification, AC-DC adapter secondary-side design, and industrial 48 V power supply input stages requiring stable component supply, long-term lifecycle support, and traceable green sourcing.
Supply support for SBR20A120CTFP 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 the Americas.
SBR20A120CTFP belongs to Diodes' SBR® Super Barrier Rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in space-constrained and thermally demanding applications such as server PSUs and telecom rectifiers.
FAQ
What is the maximum junction temperature and how does it affect derating?
The SBR20A120CTFP has an absolute maximum junction temperature of +175°C. At ambient temperatures above +85°C, average forward current must be linearly derated from 10A/leg using the curve in Figure 3 of DS31095 Rev. 7–2; for example, at +125°C ambient with ITO-220AB on a 50×50×23 mm heatsink, usable current drops to ~6.2A/leg to maintain TJ ≤ 175°C.
Is the heatsink tab electrically isolated, and what is its isolation rating?
Yes - the ITO-220AB package features an electrically isolated metal tab rated for 2000 VAC isolation (3 seconds) between tab and internal terminals. This allows direct mounting to grounded chassis without additional insulation, simplifying mechanical design in Class I AC-connected equipment.
How does SBR technology differ from standard Schottky and fast recovery diodes?
SBR uses a modified planar PN junction with barrier engineering to achieve VF near Schottky levels (0.79 V) while retaining rugged avalanche capability (180 A IFSM) and low high-temperature leakage - unlike Schottkys, which fail catastrophically under surge, and fast recovery diodes, which exhibit higher VF and reverse recovery losses.
Can SBR20A120CTFP replace TO-220AB-packaged diodes in existing layouts?
No - the ITO-220AB footprint differs mechanically from TO-220AB: pin spacing (e = 2.54 mm same), but tab cutout geometry, mounting hole position, and overall outline dimensions (e.g., L = 9.45–10.05 mm vs. TO-220AB's 12.70–14.73 mm) require PCB land pattern revision. Thermal and electrical performance gains do not offset mechanical incompatibility.
SBR20A120CTFP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- SBR®
- Package/Case:
- TO-220-3 Full Pack, Isolated Tab
- 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:
- Fast 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:
- ITO-220AB
SBR20A120CTFP FAQ
1.How can I place an order for SBR20A120CTFP through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR20A120CTFP 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 SBR20A120CTFP reliable?
The price and inventory of SBR20A120CTFP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR20A120CTFP is usually 5 days.
3.What payment methods are accepted for SBR20A120CTFP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR20A120CTFP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR20A120CTFP?
SBR20A120CTFP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR20A120CTFP 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 SBR20A120CTFP?
For technical support, including SBR20A120CTFP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR20A120CTFP requirements.
6.How does Aetrix verify that SBR20A120CTFP is sourced from the original manufacturer or authorized distributors?
All SBR20A120CTFP 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 SBR20A120CTFP meets industry standards.
7.What is the process for return or replacement of SBR20A120CTFP?
All SBR20A120CTFP units undergo pre-shipment inspection (PSI). If there is an issue with SBR20A120CTFP, 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 SBR20A120CTFP part is unused and in its original packaging.
Return procedure for SBR20A120CTFP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBR20A120CTFP 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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