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Diodes Incorporated SBR30A45CTB
- Part No.:
- SBR30A45CTB
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
SBR30A45CTB.pdf
- Description:
- DIODE ARRAY SBR 45V 15A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,167
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Product details
Overview
SBR30A45CTB from Diodes Incorporated is a 30A dual common-cathode Super Barrier Rectifier in TO263 (D2PAK) package, rated for 45V peak reverse voltage, 0.55V max forward voltage at 15A/25°C, and 0.5mA max reverse leakage at 45V/25°C. It serves as a high-efficiency output rectifier or freewheel diode in compact DC/DC converters and AC/DC adapters.
For engineers reviewing the SBR30A45CTB datasheet, SBR30A45CTB pinout, SBR30A45CTB application, or SBR30A45CTB equivalent, key selection criteria include its low VF at high current, stable IR up to +125°C, AEC-Q101 qualification option, and thermal resistance of 3°C/W (junction-to-case per leg).
Technical Context
This dual-diode device integrates two independent SBR (Super Barrier Rectifier) elements sharing a common cathode terminal, enabling synchronous rectification or dual-output configurations. Its patented trench-based SBR structure delivers superior avalanche ruggedness versus Schottky diodes while maintaining ultra-low forward voltage.
It operates across –65°C to +150°C junction temperature range with 8000W peak avalanche power capability (1µs pulse), and exhibits derated average forward current (e.g., ~25A at +70°C ambient) due to thermal resistance of 17°C/W (junction-to-ambient, mounted on specified heatsink).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse blocking voltage per diode leg; defines safe operating limit in unidirectional DC bus or flyback clamp circuits. |
| IO (per leg) | 15 A - Continuous average forward current rating per diode at +25°C ambient; total device handles 30A when both legs used in parallel configuration. |
| VF (max) | 0.55 V @ 15A, +25°C - Low conduction loss enables >95% efficiency in 12V-output DC/DC converters at full load. |
| IR (max) | 0.5 mA @ 45V, +25°C - Tight leakage control minimizes standby power loss and prevents thermal runaway in high-temp industrial environments. |
| RθJC | 3 °C/W per leg - Enables direct mounting to heatsink for high-power density designs; supports 30W dissipation per leg before exceeding 150°C junction limit. |
| IFSM | 175 A - Non-repetitive surge rating allows reliable operation during cold-start inrush or transient overloads in SMPS applications. |
| AEC-Q101 | Qualified (SBR30A45CTBQ-13 variant) - Validated for automotive under-hood power supplies requiring extended temperature cycling and mechanical shock robustness. |
Pinout & Package
Package: TO263 (D2PAK), surface-mount, 3-terminal configuration with exposed copper thermal pad (cathode-connected). Dimensions: 10.66 mm × 15.87 mm × 4.82 mm (L×H×A), weight ≈1.6 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode A) | Anode of first diode element | Accepts positive input from switching node; must be routed with low-inductance trace to minimize voltage overshoot during turn-off. |
| Pin 2 (Cathode) | Common cathode connection | Shared output node for both diodes; requires large copper pour and thermal via array for heat extraction and low ESR return path. |
| Pin 3 (Anode B) | Anode of second diode element | Enables dual-output or interleaved rectification; electrically isolated from Pin 1 except through shared cathode. |
Key Features
| Feature | Design Value |
|---|---|
| Trench SBR technology | Delivers 8000W peak avalanche power (1µs), enabling robust operation during MOSFET shoot-through or transformer reset faults without degradation. |
| Ultra-low VF at high temperature | 0.52 V @ 15A, +125°C - Maintains efficiency advantage over Schottky diodes whose VF rises significantly with junction temperature. |
| Low high-temp IR | 100 µA @ 45V, +125°C - Reduces thermal runaway risk in sealed enclosures or high-ambient environments like LED drivers and telecom PSUs. |
| Lead-free & Green compliance | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb); meets RoHS 2 and JEDEC MSL Level 1 for unlimited floor life. |
Applications
| Server VRM Output Rectification | Industrial AC/DC Adapter |
|---|---|
Use Scenario: 12V/30A point-of-load regulation in dual-phase server VRMs with synchronous buck topology. IC Role / Device Role / Timing Role: Primary output rectifier replacing discrete Schottky pairs; conducts during low-side MOSFET off-time. Use Value: 0.55V VF reduces conduction loss by ~1.2W vs. typical 0.7V Schottky, lowering heatsink requirements and improving system efficiency at full load. | Use Scenario: Universal-input (90–264VAC), 24V/15A open-frame adapter for factory automation controllers. IC Role / Device Role / Timing Role: Secondary-side freewheel diode in LLC resonant converter; clamps inductive energy during dead time. Use Value: Stable 0.5mA IR at +25°C and 100µA at +125°C ensures minimal no-load power draw and long-term reliability in unventilated enclosures. |
| Automotive Body Control Module PSU | Telecom DC/DC Brick |
Use Scenario: 5V/10A auxiliary supply in BCM, powered from 12V battery with load dump protection. IC Role / Device Role / Timing Role: Input-blocking diode preventing backfeed during cold-crank; also used as OR-ing diode in redundant inputs. Use Value: AEC-Q101-qualified variant (SBR30A45CTBQ-13) withstands –40°C to +125°C operation and 1000-hour HTOL stress without parameter shift. | Use Scenario: 48V-to-12V intermediate bus converter in 1RU telecom shelf with forced-air cooling. IC Role / Device Role / Timing Role: High-current output rectifier in center-tapped transformer secondary winding. Use Value: Dual-leg layout supports symmetrical current sharing; 3°C/W RθJC enables 30W dissipation per leg with <20°C rise above heatsink temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current, low-VF rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-30CPH045 | 45V, 30A dual common-cathode Schottky; VF = 0.52V @ 15A/25°C but IR = 2.0mA @ 45V/25°C - 4× higher leakage. | Limited to lower-temperature environments (<+85°C ambient); unsuitable for sealed telecom or automotive under-hood use. | Select when cost sensitivity outweighs thermal stability; avoid where IR-driven standby loss or thermal runaway is a concern. |
| ON Semiconductor NRVB3045CT | 45V, 30A dual common-cathode Schottky; VF = 0.54V @ 15A/25°C, IR = 1.0mA @ 45V/25°C; no AEC-Q101 variant available. | Not qualified for automotive; lacks avalanche ruggedness data - not recommended for flyback or LLC topologies with high dV/dt stress. | Acceptable for commercial-grade AC/DC adapters with active cooling; verify layout for EMI suppression due to higher di/dt ringing. |
Compared with VS-30CPH045 and NRVB3045CT, SBR30A45CTB offers superior high-temperature leakage performance and documented avalanche capability, making it preferred for thermally constrained or safety-critical power conversion where long-term reliability trumps marginal VF reduction.
Availability
SBR30A45CTB is available at Aetrix Electronics and suitable for DC/DC converters, AC/DC adapters, and automotive body control module power supplies requiring stable component supply, AEC-Q101-compliant variants, and consistent thermal performance across temperature extremes.
Supply support for SBR30A45CTB 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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with design centers across Asia, Europe, and the US, serving industrial, computing, and automotive markets.
The SBR® Super Barrier Rectifier product line targets high-efficiency, high-reliability power conversion systems where Schottky limitations-especially thermal instability and avalanche weakness-are unacceptable.
FAQ
What is the maximum continuous junction temperature for SBR30A45CTB?
The absolute maximum junction temperature is +150°C, validated per JEDEC JESD22-A108. Operation at this limit requires thermal design ensuring RθJA ≤ 17°C/W with specified heatsink (2″×2″ Al board + 50mm×50mm×23mm heatsink), and derating IO to ~10A at +125°C ambient.
Does SBR30A45CTB have a common-anode configuration option?
No - SBR30A45CTB is exclusively offered in common-cathode configuration (pinout: Anode A / Cathode / Anode B). Diodes Incorporated does not list a common-anode variant in the SBR30AxxCTB series; alternative part numbers like SBR30A45CTR use different packaging and internal topology.
How does the SBR30A45CTB's avalanche rating compare to standard Schottky diodes?
SBR30A45CTB is rated for 8000W peak avalanche power (1µs pulse), whereas most Schottky diodes lack formal avalanche specifications and fail catastrophically under similar conditions. This ruggedness stems from its trench-based SBR structure, enabling safe operation during transformer reset spikes or MOSFET short-circuits.
Can SBR30A45CTB be used in place of a single 30A Schottky in a center-tapped transformer design?
Yes - its dual common-cathode configuration matches center-tapped secondary wiring: each anode connects to one transformer leg, and the shared cathode serves as the positive output rail. Ensure PCB layout balances trace inductance between legs to prevent current imbalance and localized heating.
SBR30A45CTB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- SBR®
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tube
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io) (per Diode):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 15 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 45 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
SBR30A45CTB FAQ
1.How can I place an order for SBR30A45CTB through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR30A45CTB 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 SBR30A45CTB reliable?
The price and inventory of SBR30A45CTB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR30A45CTB is usually 5 days.
3.What payment methods are accepted for SBR30A45CTB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR30A45CTB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR30A45CTB?
SBR30A45CTB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR30A45CTB 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 SBR30A45CTB?
For technical support, including SBR30A45CTB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR30A45CTB requirements.
6.How does Aetrix verify that SBR30A45CTB is sourced from the original manufacturer or authorized distributors?
All SBR30A45CTB 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 SBR30A45CTB meets industry standards.
7.What is the process for return or replacement of SBR30A45CTB?
All SBR30A45CTB units undergo pre-shipment inspection (PSI). If there is an issue with SBR30A45CTB, 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 SBR30A45CTB part is unused and in its original packaging.
Return procedure for SBR30A45CTB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBR30A45CTB Tags
-
BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
Diodes Incorporated
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BAV99,215
Nexperia USA Inc.
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BAT54SLT1G
onsemi
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BAV70LT1G
onsemi
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BAT54CLT1G
onsemi
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BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
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BAT54S,215
Nexperia USA Inc.
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BAS40-04LT1G
onsemi
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MMBD1503-TP
Micro Commercial Co
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BAV99WT1G
onsemi
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