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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation MBR790H

Name: MBR790H
Brand: Taiwan Semiconductor Corporation
SKU: MBR790H
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MBR790H

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: TO-220-2

Datasheet:: MBR790H.pdf

Description:: 7.5A, 90V, PLANAR SCHOTTKY

Quantity:: RFQ Add To RFQ list

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Inventory:5,684

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Product details

Overview

MBR790H from Taiwan Semiconductor is a 7.5A, 90V AEC-Q101-qualified Schottky barrier rectifier in TO-220AC package, featuring 0.92V forward voltage at 7.5A/25°C, 150A surge capability, and guard ring overvoltage protection-used in automotive-grade DC-DC converters and SMPS secondary-side rectification.

For engineers reviewing the MBR790H datasheet, MBR790H pinout, MBR790H application, or MBR790H equivalent, key selection criteria include its 90V V_RRM, AEC-Q101 qualification, TO-220AC thermal resistance (R_θJC = 5°C/W), and 5mA reverse leakage at 125°C under rated voltage.

Technical Context

This single-die Schottky rectifier operates with low conduction loss due to its metal-semiconductor junction, enabling high-efficiency power conversion in switching topologies. Its guard ring structure enhances ruggedness against transient overvoltage events common in automotive load-dump conditions.

The device supports continuous forward current up to 7.5A at case temperature ≤100°C and withstands 150A non-repetitive surge (8.3ms half-sine) without degradation-critical for input-stage rectification in industrial adapters and on-board chargers.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	90 V - Maximum repetitive reverse blocking voltage; defines safe operating range in 48V automotive systems.
I_F	7.5 A - Continuous average forward current; sets minimum heatsink requirement for sustained 60W+ output.
V_F @ 7.5A, 25°C	0.92 V - Low forward drop reduces conduction loss by ~15% vs. comparable 100V Si diodes.
I_FSM	150 A - Peak surge rating enables robustness against cold-crank and load-dump transients.
R_θJC	5 °C/W - Junction-to-case thermal resistance allows direct mounting to chassis for passive cooling.
I_R @ 90V, 125°C	5 mA - Reverse leakage level constrains standby power loss in high-temp environments.
T_J max	150 °C - Maximum junction temperature supports operation in under-hood automotive locations.

Pinout & Package

TO-220AC package with isolated tab (non-conductive mounting surface), matte tin-plated leads solderable per J-STD-002, and polarity marked on device body.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry point during forward conduction	Connected to lower-potential side (e.g., transformer secondary center-tap or switch node).
Cathode	Current exit point during forward conduction	Connected to output rail or filter capacitor positive terminal.
Tab (Case)	Electrically isolated mechanical interface	Provides thermal path only; no electrical connection-enables mounting without insulating hardware.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive applications including engine control units and ADAS power supplies.
Guard ring overvoltage protection	Prevents premature avalanche breakdown during line transients up to 150V peak.
150A surge rating (8.3ms)	Withstands ISO 7637-2 Pulse 5a load-dump events without failure.
Halogen-free & RoHS compliant	Meets automotive ELV Directive and IPC-J-STD-609A material classification.
TO-220AC with R_θJC = 5°C/W	Enables >5W dissipation with minimal heatsink in space-constrained modules.

Applications

Automotive DC-DC Converters	Industrial SMPS Secondary Rectification
Use Scenario: 12V–48V bidirectional DC-DC converter in 48V mild-hybrid vehicles. IC Role / Device Role / Timing Role: Primary output rectifier handling 7.5A continuous current at 90V blocking. Use Value: Low V_F minimizes conduction loss across wide duty-cycle range; AEC-Q101 ensures reliability over 15-year vehicle life.	Use Scenario: Output stage of 300W telecom SMPS with active clamp flyback topology. IC Role / Device Role / Timing Role: Synchronous rectifier replacement for reduced switching loss and EMI. Use Value: 150A I_FSM absorbs turn-off spikes; TO-220AC tab enables direct heatsinking to enclosure.
On-Board Battery Chargers	High-Efficiency AC Adapters
Use Scenario: 5kW on-board charger auxiliary power supply for EV traction battery management. IC Role / Device Role / Timing Role: Isolated auxiliary rail rectifier supplying gate drivers and MCU. Use Value: 150°C T_Jmax supports operation near high-power SiC inverters; 5mA I_R limits standby drain.	Use Scenario: 65W USB-PD adapter with GaN primary and Schottky secondary. IC Role / Device Role / Timing Role: Output rectifier delivering regulated 20V/3.25A with <1% ripple. Use Value: 0.92V V_F improves full-load efficiency to >94%; halogen-free compound meets IEC 61249-2-21.

Automotive DC-DC Converters

Industrial SMPS Secondary Rectification

Use Scenario: 12V–48V bidirectional DC-DC converter in 48V mild-hybrid vehicles.

IC Role / Device Role / Timing Role: Primary output rectifier handling 7.5A continuous current at 90V blocking.

Use Value: Low V_F minimizes conduction loss across wide duty-cycle range; AEC-Q101 ensures reliability over 15-year vehicle life.

Use Scenario: Output stage of 300W telecom SMPS with active clamp flyback topology.

IC Role / Device Role / Timing Role: Synchronous rectifier replacement for reduced switching loss and EMI.

Use Value: 150A I_FSM absorbs turn-off spikes; TO-220AC tab enables direct heatsinking to enclosure.

On-Board Battery Chargers

High-Efficiency AC Adapters

Use Scenario: 5kW on-board charger auxiliary power supply for EV traction battery management.

IC Role / Device Role / Timing Role: Isolated auxiliary rail rectifier supplying gate drivers and MCU.

Use Value: 150°C T_Jmax supports operation near high-power SiC inverters; 5mA I_R limits standby drain.

Use Scenario: 65W USB-PD adapter with GaN primary and Schottky secondary.

IC Role / Device Role / Timing Role: Output rectifier delivering regulated 20V/3.25A with <1% ripple.

Use Value: 0.92V V_F improves full-load efficiency to >94%; halogen-free compound meets IEC 61249-2-21.

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-MBR790CT	TO-220AB package (electrically connected tab); V_F = 0.89V @ 7.5A/25°C; not AEC-Q101 qualified.	Requires insulating washer for tab mounting; suitable for industrial but not automotive end-equipment.	Select when cost sensitivity outweighs automotive qualification and tab isolation is manageable.
ON Semiconductor MBR790CT	TO-220AB package; V_F = 0.90V @ 7.5A/25°C; AEC-Q101 qualified; 10mA I_R @ 125°C.	Higher leakage limits use in high-temp battery systems; electrically connected tab demands isolation design.	Choose when existing TO-220AB footprint exists and leakage tolerance >5mA is acceptable.

Compared with MBR790H, VS-MBR790CT offers slightly lower V_F but lacks automotive qualification and requires insulation, while MBR790CT matches AEC-Q101 but trades higher leakage and non-isolated tab-making MBR790H optimal for thermally demanding, safety-critical automotive rectification where tab isolation and low leakage are mandatory.

Availability

MBR790H is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS secondary rectification, and on-board battery chargers requiring stable component supply with long-term lifecycle assurance.

Supply support for MBR790H 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, serving automotive, industrial, and consumer markets since 1979.

The MBR7xxH series targets AEC-Q101-compliant power rectification in harsh-environment automotive subsystems, emphasizing thermal robustness, surge immunity, and material compliance for under-hood deployment.

FAQ

What is the maximum junction temperature rating for MBR790H?

The MBR790H has a maximum junction temperature (T_J) of +150°C, validated per AEC-Q101 stress testing. This rating enables reliable operation in under-hood automotive environments where ambient temperatures exceed 105°C, provided thermal design maintains junction temperature below this limit using the specified R_θJC = 5°C/W path.

Is MBR790H pin-compatible with standard TO-220AC rectifiers?

Yes, MBR790H uses the industry-standard TO-220AC outline with 3-pin configuration (anode, cathode, isolated tab). Its pin spacing, hole pattern, and mechanical dimensions match JEDEC TO-220AC specifications, allowing direct replacement in existing layouts designed for TO-220AC Schottky rectifiers without PCB modification.

Does MBR790H require a heatsink for 7.5A continuous operation?

At 7.5A continuous current and 25°C ambient, MBR790H dissipates approximately 6.9W (7.5A × 0.92V). With R_θJC = 5°C/W and typical R_θCA ≈ 10°C/W for a small heatsink, junction temperature reaches ~120°C-within rating. A heatsink is recommended for sustained operation above 50°C ambient or derated current above 5A without forced air.

What does the 'H' suffix signify in MBR790H?

The 'H' suffix in MBR790H indicates full AEC-Q101 qualification per Rev D, including stress tests for temperature cycling, humidity bias, high-temperature operating life, and ESD. This distinguishes it from the non-H variant (MBR790), which lacks automotive qualification and may not meet the same reliability screening requirements.

How does the guard ring structure improve MBR790H reliability?

The guard ring in MBR790H redistributes electric field at the die edge during reverse-bias transients, preventing localized avalanche and premature breakdown. This extends survivability during ISO 7637-2 Pulse 5a load-dump events (up to 150V) and improves long-term stability in automotive power rails subject to frequent voltage spikes.

MBR790H 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):: 7.5A

Voltage - Forward (Vf) (Max) @ If:: 920 mV @ 7.5 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

MBR790H FAQ

1.How can I place an order for MBR790H through Aetrix?

Please submit a Request for Quotation (RFQ) for MBR790H 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 MBR790H reliable?

The price and inventory of MBR790H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR790H is usually 5 days.

3.What payment methods are accepted for MBR790H?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR790H transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MBR790H?

MBR790H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MBR790H 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 MBR790H?

For technical support, including MBR790H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR790H requirements.

6.How does Aetrix verify that MBR790H is sourced from the original manufacturer or authorized distributors?

All MBR790H 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 MBR790H meets industry standards.

7.What is the process for return or replacement of MBR790H?

All MBR790H units undergo pre-shipment inspection (PSI). If there is an issue with MBR790H, 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 MBR790H part is unused and in its original packaging.

Return procedure for MBR790H:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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