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Diodes Incorporated MBR1040CT
- Part No.:
- MBR1040CT
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
MBR1040CT.pdf
- Description:
- DIODE ARR SCHOTT 40V 10A TO2203
- Quantity:
- Payment:
- Shipping:
Inventory:6,078
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Product details
Overview
MBR1040CT from Diodes Incorporated is a 10A dual common-cathode Schottky barrier rectifier in TO-220AB package, rated for 40V peak reverse voltage, 5A average forward current per leg, and 0.65V max forward voltage at 5A/25°C. It serves as polarity protection and recirculating diode in DC power supplies, motor drives, and switching converters.
For engineers reviewing the MBR1040CT datasheet, MBR1040CT pinout, MBR1040CT application, or MBR1040CT equivalent, key selection criteria include its low VF (0.65V), 100A non-repetitive surge rating, TO-220AB thermal resistance (3 K/W), AEC-Q101 qualification, and dual-leg common-cathode configuration for compact half-wave/full-wave rectification.
Technical Context
This device integrates two independent Schottky diodes sharing a common cathode terminal, enabling dual-channel rectification or parallel operation with shared heat sinking. Its guard ring die construction enhances transient immunity, while the low VF and fast recovery (<10 ns) minimize conduction and switching losses in high-frequency DC/DC stages.
Designed for commercial-grade reliability, it operates across –55°C to +150°C junction temperature, supports 100A IFSM surge capability, and exhibits only 0.1mA max reverse leakage at 25°C - critical for low-power standby and battery-backed systems where leakage-induced drain must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse blocking voltage per leg; defines safe operating margin against input transients in 24V–36V DC bus applications. |
| IO (per leg) | 5 A - Continuous average forward current per diode element at TC = 25°C with heatsink; enables 10A total device output in dual-leg configurations. |
| VF (max) | 0.65 V @ 5A, 25°C - Low conduction loss reduces power dissipation by ~30% vs. standard PN rectifiers, improving efficiency in 5–12V SMPS outputs. |
| IFSM | 100 A - Non-repetitive 8.3ms surge rating; withstands inrush currents during cold-start of industrial power modules and motor controllers. |
| RθJC | 3 K/W - Junction-to-case thermal resistance; allows direct mounting to heatsinks for stable operation up to 150°C junction temperature. |
| IRM (max) | 0.1 mA @ 25°C - Ultra-low reverse leakage ensures minimal standby current draw in always-on circuits and battery-powered backup systems. |
| CT | 150 pF @ 4V, 1MHz - Low junction capacitance minimizes high-frequency noise coupling and improves EMI performance in switching regulators. |
Pinout & Package
Package: TO-220AB - Molded plastic case with matte tin-plated copper leadframe, UL 94V-0 flammability rating, and 1.95g mass. Designed for through-hole mounting and mechanical attachment to external heatsinks via case tab (Pin 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Input terminal for first Schottky diode leg; connects to unregulated DC input or inductive flyback node. |
| Pin 2 | Cathode (Common) | Shared cathode output node; electrically and thermally connected to metal tab for heatsinking and low-inductance return path. |
| Pin 3 | Anode 2 | Input terminal for second Schottky diode leg; enables dual independent rectification or full-wave center-tap configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Enhances ESD and transient robustness without external TVS, reducing BOM count in automotive body electronics and industrial controls. |
| AEC-Q101 qualified | Validated for automotive under-hood environments including temperature cycling, HTRB, and mechanical shock - suitable for engine control and lighting modules. |
| Lead-free & halogen-free "Green" | Complies with RoHS 2 and JEDEC J-STD-020 Level 1 moisture sensitivity; eliminates post-reflow baking and supports eco-conscious manufacturing. |
| Low thermal resistance (3 K/W) | Enables >8W power dissipation at ΔT = 24K with modest heatsinking - sufficient for 12V/5A DC/DC outputs without forced air. |
Applications
| DC Power Supply Input Stage | Motor Drive Freewheeling |
|---|---|
Use Scenario: Rectifying AC line-derived 36VAC secondary in offline SMPS front-end before PFC stage. IC Role / Device Role / Timing Role: Dual-leg Schottky rectifier providing low-loss, high-efficiency AC-to-DC conversion with common-cathode output rail. Use Value: 0.65V VF cuts conduction loss by 45% vs. 1N5408, reducing thermal load on primary-side heatsink and enabling smaller enclosure design. | Use Scenario: Clamping inductive kickback from brushed DC motor H-bridge during PWM commutation. IC Role / Device Role / Timing Role: Recirculating diode absorbing stored energy from motor windings during off-time, preventing MOSFET avalanche failure. Use Value: 100A IFSM rating handles 5× nominal motor stall current surges; fast recovery avoids cross-conduction in synchronous rectification schemes. |
| Battery Polarity Protection | Redundant DC Input OR-ing |
Use Scenario: Preventing damage from reverse battery connection in 24V vehicle-mounted electronics. IC Role / Device Role / Timing Role: Series-connected Schottky anode-to-input, cathode-to-load, blocking reverse current while passing forward current with minimal drop. Use Value: 0.65V VF limits voltage loss to <3% at 5A, preserving runtime in battery-sensitive telematics and ADAS modules. | Use Scenario: Combining two independent 12V DC inputs (e.g., main + backup battery) into single system rail. IC Role / Device Role / Timing Role: Dual-anode configuration used as discrete OR-ing diode pair, each leg handling one input source. Use Value: Common-cathode topology simplifies PCB layout with single output trace and shared thermal pad, reducing footprint vs. discrete diodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS1045C | Same TO-220AB package, 45V VRRM, 0.72V VF @ 5A - higher voltage rating but 10% higher conduction loss. | Suitable for 42V automotive systems where 40V margin is insufficient; less efficient in 24V industrial supplies. | Select when 45V blocking is required and thermal headroom allows higher VF penalty. |
| ON Semiconductor MBR1045CT | Identical TO-220AB package and pinout, 45V VRRM, same 0.65V VF spec - differs only in foundry and AEC-Q101 test report documentation. | No functional difference in circuit operation; acceptable for drop-in replacement where qualification documentation alignment is not mandatory. | Choose when sourcing flexibility is prioritized and AEC-Q101 certification is not contractually enforced. |
Compared with STPS1045C, MBR1040CT offers lower VF and tighter thermal resistance but reduced voltage margin; versus MBR1045CT, it trades 5V blocking headroom for identical efficiency and footprint - making it optimal for cost- and thermally constrained 24–36V commercial power designs.
Availability
MBR1040CT is available at Aetrix Electronics and suitable for DC power supplies, motor drive freewheeling, and battery polarity protection requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for MBR1040CT 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 California and operating wafer fabs and assembly facilities across Asia.
The MBR10xxCT series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for commercial and automotive power conversion where low VF, surge robustness, and thermal efficiency are primary design drivers.
FAQ
Is MBR1040CT suitable for surface-mount assembly?
No - MBR1040CT uses a TO-220AB through-hole package with a metal tab designed for mechanical heatsink attachment and wave soldering. It lacks SMD-compatible leads or thermal pad geometry, and its 1.95g mass exceeds typical reflow profile tolerances for SO-8 or DPAK alternatives.
What is the maximum continuous junction temperature for reliable operation?
The absolute maximum junction temperature is +150°C, verified per AEC-Q101 stress testing. For sustained reliability, Diodes recommends limiting TJ to ≤135°C using the RθJC = 3 K/W value and measured case temperature - achievable with ≥45 mm × 20 mm × 12 mm heatsink at 5A per leg.
Does MBR1040CT support full-wave rectification without a center-tapped transformer?
Yes - its dual common-cathode configuration allows use as a full-wave bridge half (two diodes) when paired with two additional diodes, or as a dual-output rectifier feeding separate rails. It cannot replace a 4-diode bridge alone but enables compact transformerless DC/DC input stages with split-rail requirements.
How does the guard ring structure improve real-world reliability?
The integrated guard ring mitigates edge breakdown under voltage transients and ESD events by redistributing electric field concentration away from the active junction periphery. This extends time-to-failure in automotive load-dump tests (ISO 7637-2 Pulse 5a) and reduces field returns in industrial equipment exposed to relay-coil switching noise.
MBR1040CT 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):
- 40 V
- Current - Average Rectified (Io) (per Diode):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 840 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 40 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
MBR1040CT FAQ
1.How can I place an order for MBR1040CT through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR1040CT 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 MBR1040CT reliable?
The price and inventory of MBR1040CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR1040CT is usually 5 days.
3.What payment methods are accepted for MBR1040CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR1040CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR1040CT?
MBR1040CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR1040CT 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 MBR1040CT?
For technical support, including MBR1040CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR1040CT requirements.
6.How does Aetrix verify that MBR1040CT is sourced from the original manufacturer or authorized distributors?
All MBR1040CT 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 MBR1040CT meets industry standards.
7.What is the process for return or replacement of MBR1040CT?
All MBR1040CT units undergo pre-shipment inspection (PSI). If there is an issue with MBR1040CT, 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 MBR1040CT part is unused and in its original packaging.
Return procedure for MBR1040CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MBR1040CT Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
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BAV70LT1G
onsemi
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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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