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Taiwan Semiconductor Corporation MBR1090H
- Part No.:
- MBR1090H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-220-2
- Datasheet:
-
MBR1090H.pdf
- Description:
- 10A, 90V, PLANAR SCHOTTKY
- Quantity:
- Payment:
- Shipping:
Inventory:5,145
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Product details
Overview
MBR1090H from Taiwan Semiconductor is a 10A, 90V AEC-Q101 qualified Schottky barrier rectifier in TO-220AC package, featuring 0.85V max forward voltage at 10A/25°C, 150A surge current capability, and guard ring overvoltage protection. It delivers high efficiency in DC-DC converters and automotive-grade power supplies.
For engineers reviewing the MBR1090H datasheet, MBR1090H pinout, MBR1090H application, or MBR1090H equivalent, key selection criteria include its 90V repetitive peak reverse voltage, 3°C/W junction-to-case thermal resistance, AEC-Q101 qualification status, and TO-220AC mechanical compatibility with standard heatsink mounting.
Technical Context
This single-die Schottky rectifier operates with low conduction loss due to its metal-semiconductor junction, enabling high-efficiency switching in continuous conduction mode (CCM) and discontinuous conduction mode (DCM) topologies. Its 150A non-repetitive surge rating supports transient load conditions in automotive 12V systems.
The device's guard ring structure enhances ruggedness against voltage transients, while its 100µA max reverse leakage at 25°C and 6mA at 125°C ensures stable blocking performance across temperature. Thermal resistance of 3°C/W enables reliable operation up to 150°C junction temperature when properly heatsinked.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 90 V - Maximum repetitive reverse voltage the device blocks reliably in circuit |
| IF | 10 A - Continuous forward current rating defining steady-state power handling |
| VF (max) | 0.85 V @ 10A, 25°C - Directly determines conduction loss and thermal rise in high-current paths |
| IFSM | 150 A - Peak surge current capacity for short-duration inrush or fault events |
| RθJC | 3 °C/W - Thermal resistance from junction to case, critical for heatsink sizing and thermal design |
| TJ max | 150 °C - Maximum allowable junction temperature, limiting ambient and power dissipation margins |
| IR (max) | 100 µA @ 25°C - Reverse leakage current affecting standby power and blocking integrity |
Pinout & Package
Package: TO-220AC - Three-terminal through-hole package with isolated tab, matte tin-plated leads, UL 94V-0 molding compound, and 0.56 N·m maximum mounting torque.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Current entry point under forward bias | Connected to input/source side of rectification path; requires low-inductance layout for high-frequency switching |
| Cathode (Lead 2) | Current exit point under forward bias | Connected to output/load side; often tied to ground or common return in buck-derived topologies |
| Tab (Case) | Electrically connected to cathode | Provides thermal path to heatsink; must be electrically isolated unless cathode is chassis-ground referenced |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive power electronics requiring reliability under temperature cycling, vibration, and humidity stress |
| Guard ring structure | Improves voltage ruggedness by suppressing edge breakdown during fast dv/dt transients |
| 150A surge rating | Supports cold-crank and load-dump events in 12V vehicle electrical systems without failure |
| 3°C/W thermal resistance | Enables >7W power dissipation with ≤21°C temperature rise above heatsink at 10A conduction |
| Halogen-free construction | Complies with IEC 61249-2-21, supporting RoHS and environmental compliance in end equipment |
Applications
| Automotive DC-DC Converters | Industrial SMPS Outputs |
|---|---|
Use Scenario: Secondary-side rectification in 12V-to-5V/3.3V buck-derived converters for ADAS ECUs and infotainment modules. IC Role / Device Role / Timing Role: Schottky rectifier providing low-VF synchronous rectification alternative to MOSFET-based solutions. Use Value: 0.85V VF reduces conduction loss by ~30% vs. silicon diodes, lowering thermal load in space-constrained ECU enclosures. | Use Scenario: Output rectification in 48V telecom and industrial power supplies operating at 100–500kHz switching frequencies. IC Role / Device Role / Timing Role: High-current unidirectional conduction element in continuous conduction mode (CCM) flyback or forward converters. Use Value: 150A IFSM withstands startup surges and short-circuit recovery without degradation, improving system robustness. |
| Server PSU Hold-Up Circuits | LED Driver Secondary Side |
Use Scenario: Input-stage rectification feeding bulk capacitors in redundant AC-DC front-ends with hold-up time requirements. IC Role / Device Role / Timing Role: High-average-current freewheeling path during line dropout or brownout conditions. Use Value: 10A IF rating and 150°C TJ max allow sustained operation during extended hold-up intervals without derating. | Use Scenario: Output rectification in constant-current LED drivers for street lighting and commercial fixtures. IC Role / Device Role / Timing Role: Low-loss current path delivering regulated DC to high-power LED strings. Use Value: 100µA IR at 25°C minimizes standby leakage, preserving driver efficiency during dimming or off-state periods. |
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-MBR1090CT | TO-220AB dual common-cathode configuration; 0.82V VF typical at 10A/25°C; no AEC-Q101 qualification | Designed for dual-output or center-tapped transformer rectification; not automotive-qualified | Select when dual-diode topology is required and AEC-Q101 is not mandated |
| ON Semiconductor MBR1090CT | TO-220AB package; 0.84V VF max at 10A/25°C; AEC-Q101 qualified only in "H" suffix variants (e.g., MBR1090CTH) | Same voltage/current specs but dual-diode layout; requires PCB redesign for single-diode replacement | Choose only if dual-diode function is needed and MBR1090CTH is sourced explicitly |
Compared with MBR1090H, VS-MBR1090CT offers slightly lower VF but lacks automotive qualification and uses a different pinout; MBR1090CTH matches qualification but requires dual-diode layout-neither is pin-compatible, and both demand board-level validation for substitution.
Availability
MBR1090H is available at Aetrix Electronics and suitable for automotive power conversion, industrial SMPS, and LED driver designs requiring stable component supply, AEC-Q101 compliance, and proven thermal performance in TO-220AC packages.
Supply support for MBR1090H 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power devices, rectifiers, and protection components.
The MBR1090H belongs to TSC's AEC-Q101 qualified Schottky rectifier product line, engineered specifically for automotive and industrial power conversion where low VF, high surge tolerance, and thermal reliability are critical.
FAQ
What is the maximum junction temperature rating for MBR1090H?
The MBR1090H has a maximum junction temperature (TJ max) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This rating allows operation in under-hood automotive environments and high-ambient industrial settings when thermal design accounts for its 3°C/W junction-to-case resistance. Derating curves confirm usable current capacity down to 0A at 150°C case temperature.
Is MBR1090H pin-compatible with standard TO-220AC rectifiers?
Yes, MBR1090H uses the industry-standard TO-220AC outline with three leads: anode (lead 1), cathode (lead 2), and electrically connected tab (cathode). Its pinout matches generic TO-220AC Schottky and silicon rectifiers, enabling direct mechanical replacement in existing footprints-provided thermal and electrical margins remain within specification for the MBR1090H's 90V VRRM and 0.85V VF.
Does MBR1090H meet automotive reliability standards?
Yes, the "H" suffix in MBR1090H explicitly denotes AEC-Q101 qualification per Taiwan Semiconductor's ordering information. This includes stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life-validating suitability for automotive powertrain, body control, and ADAS applications where long-term reliability under harsh conditions is mandatory.
What is the forward voltage drop of MBR1090H at full rated current?
The MBR1090H exhibits a maximum forward voltage (VF) of 0.85 V at 10 A and 25°C junction temperature, as specified in the electrical characteristics table. At elevated temperature (125°C), VF drops to 0.71 V typical-reflecting the negative temperature coefficient of Schottky diodes-enabling predictable conduction loss modeling across operating conditions.
How does the guard ring feature benefit MBR1090H in real-world circuits?
The guard ring in MBR1090H suppresses edge breakdown during rapid voltage transients, increasing effective die edge ruggedness. In practice, this allows the device to sustain higher dv/dt rates (10,000 V/µs rated) without premature avalanche, improving immunity to switching noise in high-frequency SMPS and reducing risk of failure during load dump or inductive kick events in automotive systems.
MBR1090H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-220-2
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 90 V
- Current - Average Rectified (Io):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 850 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 90 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AC
- Operating Temperature - Junction:
- -55°C ~ 150°C
MBR1090H FAQ
1.How can I place an order for MBR1090H through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR1090H 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 MBR1090H reliable?
The price and inventory of MBR1090H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR1090H is usually 5 days.
3.What payment methods are accepted for MBR1090H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR1090H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR1090H?
MBR1090H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR1090H 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 MBR1090H?
For technical support, including MBR1090H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR1090H requirements.
6.How does Aetrix verify that MBR1090H is sourced from the original manufacturer or authorized distributors?
All MBR1090H 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 MBR1090H meets industry standards.
7.What is the process for return or replacement of MBR1090H?
All MBR1090H units undergo pre-shipment inspection (PSI). If there is an issue with MBR1090H, 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 MBR1090H part is unused and in its original packaging.
Return procedure for MBR1090H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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