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Vishay General Semiconductor - Diodes Division MBRB1635HE3_B/P
- Part No.:
- MBRB1635HE3_B/P
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
MBRB1635HE3_B/P.pdf
- Description:
- DIODE SCHOTTKY 35V 16A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,324
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Product details
Overview
MBRB1635HE3_B/P from Vishay General Semiconductor is a Schottky barrier rectifier in D2PAK (TO-263AB) package, rated for 16 A average forward current, 35 V maximum repetitive peak reverse voltage, and 150 A peak surge current. It delivers low forward voltage drop (0.57 V at 16 A, 125 °C), high-frequency operation, and is optimized for DC/DC converters and polarity protection in automotive-grade power systems.
For engineers reviewing the MBRB1635HE3_B/P datasheet, MBRB1635HE3_B/P pinout, MBRB1635HE3_B/P application, or MBRB1635HE3_B/P equivalent, key selection criteria include junction-to-case thermal resistance (1.5 °C/W), AEC-Q101 qualification status, guardring-enabled overvoltage protection, and compatibility with lead-free reflow up to 245 °C per J-STD-020.
Technical Context
This device implements a single-die Schottky barrier structure with integrated guardring for enhanced transient voltage robustness. Its low VF and fast recovery enable high-efficiency rectification in switching-mode topologies operating above 100 kHz.
Thermal performance is defined by RθJC = 1.5 °C/W, enabling high-power dissipation when mounted on a heatsink. The D2PAK package supports direct thermal coupling via the exposed cathode tab (Pin 2/K), and its MSL Level 1 rating confirms suitability for standard surface-mount reflow processes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 35 V - Maximum repetitive reverse blocking capability; defines safe operating range in buck or flyback secondary-side rectification. |
| IF(AV) | 16 A at TC = 125 °C - Continuous DC output current handling under heatsink-cooled conditions. |
| VF | 0.57 V at IF = 16 A, TC = 125 °C - Directly reduces conduction loss and improves system efficiency in high-current DC/DC stages. |
| IFSM | 150 A (8.3 ms half-sine) - Withstands inrush and fault currents without degradation in power-up or short-circuit events. |
| RθJC | 1.5 °C/W - Enables precise thermal design: 24 W dissipation yields ≤36 °C junction-to-case rise at steady state. |
| TJ max. | 150 °C - Specifies absolute maximum junction temperature; supports operation in under-hood automotive environments. |
Pinout & Package
Package: D2PAK (TO-263AB), surface-mount, thermally enhanced with exposed cathode tab (Pin 2/K) for heatsink attachment. Mold compound meets UL 94 V-0; matte tin-plated leads comply with J-STD-002 solderability and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Input terminal for forward current flow; connects to switching node or input rail in buck/flyback configurations. |
| Pin 2 / K | Cathode / Heatsink Pad | Output terminal and primary thermal path; must be soldered to copper pour or heatsink for RθJC = 1.5 °C/W performance. |
Key Features
| Feature | Design Value |
|---|---|
| Guardring protection | Prevents edge breakdown under high dv/dt or transient overvoltage, improving reliability in noisy automotive power rails. |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS power supplies per stress test requirements. |
| Low VF at high temperature | 0.57 V @ 125 °C ensures stable conduction loss across full industrial temperature range, reducing thermal runaway risk. |
| MSL Level 1 rating | Allows unlimited floor life and standard 245 °C peak reflow without baking, simplifying SMT manufacturing flow. |
Applications
| Automotive DC/DC Converter | Polarity Protection Circuit |
|---|---|
Use Scenario: 12 V to 5 V/3.3 V step-down conversion in infotainment head units and body control modules. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacement, conducting during low-side switch conduction phase. Use Value: 0.57 V VF at 125 °C minimizes power loss and thermal load in space-constrained enclosures. | Use Scenario: Reverse-voltage protection on battery-fed inputs of telematics gateways and ECU power rails. IC Role / Device Role / Timing Role: Unidirectional current valve placed in series with positive supply line. Use Value: 35 V VRRM exceeds automotive load-dump transients (ISO 7637-2 Pulse 5a), ensuring no breakdown during 35 V spikes. |
| High-Frequency SMPS Output Stage | Freewheeling Diode in BLDC Motor Drive |
Use Scenario: Output rectification in 300–500 kHz isolated DC/DC modules for server PSUs and telecom power. IC Role / Device Role / Timing Role: Fast-recovery freewheeling path during high-side MOSFET off-time. Use Value: Near-zero reverse recovery charge (Qrr) eliminates switching loss penalty and EMI from tail current. | Use Scenario: Freewheeling path across motor phase windings in 24 V/48 V brushless DC drives for HVAC actuators and power seats. IC Role / Device Role / Timing Role: Provides low-loss current recirculation during PWM dead-time intervals. Use Value: 150 A IFSM withstands motor stall currents without bond-wire fusing or thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS1635CG-TR | Same 35 V VRRM, 16 A IF(AV), but TO-220AC package; RθJC = 2.5 °C/W; no AEC-Q101 qualification. | Limited to commercial/industrial use; unsuitable for automotive due to qualification gap and higher thermal resistance. | Select only if AEC-Q101 is not required and board layout accommodates through-hole mounting. |
| ON Semi MBR1635CT | Dual common-cathode configuration in TO-220AB; each diode rated 16 A/35 V; no guardring; RθJC = 2.0 °C/W. | Not pin-compatible; dual-diode topology requires circuit redesign; lacks automotive qualification and overvoltage hardening. | Consider only for cost-sensitive dual-output designs where guardring and AEC-Q101 are non-critical. |
Compared with STPS1635CG-TR and MBR1635CT, the MBRB1635HE3_B/P uniquely combines AEC-Q101 qualification, D2PAK thermal performance (RθJC = 1.5 °C/W), and guardring-enhanced ruggedness-making it the only option qualified for under-hood automotive rectification without derating or additional clamping.
Availability
MBRB1635HE3_B/P is available at Aetrix Electronics and suitable for automotive power conversion, industrial DC/DC modules, and polarity protection circuits requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MBRB1635HE3_B/P 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and optoelectronics with emphasis on reliability, thermal performance, and automotive-grade validation.
The MBRB16xx family is designed specifically for high-current, high-frequency rectification in automotive and industrial power supplies-prioritizing low VF, surge robustness, and AEC-Q101 compliance in thermally demanding environments.
FAQ
What is the maximum junction temperature rating for MBRB1635HE3_B/P?
The MBRB1635HE3_B/P has a maximum junction temperature (TJ max.) of +150 °C, as specified in the Vishay datasheet. This rating enables reliable operation in under-hood automotive environments and high-ambient industrial settings. Derating curves confirm sustained 16 A average current capability at case temperatures up to 125 °C. Thermal design must maintain TJ ≤ 150 °C using the documented RθJC = 1.5 °C/W and appropriate heatsinking. The MBRB1635HE3_B/P must not exceed this limit during continuous or pulsed operation.
Is MBRB1635HE3_B/P AEC-Q101 qualified?
Yes, MBRB1635HE3_B/P is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation in the MBRB16xx datasheet. This qualification covers stress tests including HTGB, HTRB, TCT, and ESD per AEC-Q101 Rev D. The part is intended for automotive applications such as engine control, ADAS power supplies, and body electronics. Commercial-grade variants (e.g., MBRB1635-M3) lack this qualification. Always verify the full part number suffix matches HM3 for automotive compliance. The MBRB1635HE3_B/P meets these requirements.
What is the forward voltage drop of MBRB1635HE3_B/P at rated current and temperature?
The MBRB1635HE3_B/P exhibits a maximum instantaneous forward voltage (VF) of 0.57 V at IF = 16 A and TC = 125 °C, per the Vishay datasheet's electrical characteristics table. At 25 °C, VF is 0.63 V under the same current. This low VF directly reduces conduction losses in high-current paths. The value is measured under pulsed conditions (300 μs, 1 % duty cycle) to avoid self-heating effects. Designers should use the 125 °C value for worst-case thermal analysis. The MBRB1635HE3_B/P maintains this performance across its qualified temperature range.
What package type does MBRB1635HE3_B/P use, and how is thermal management implemented?
MBRB1635HE3_B/P uses the D2PAK (TO-263AB) surface-mount package with an exposed cathode pad (Pin 2/K) serving as both electrical terminal and primary thermal interface. Thermal resistance from junction to case (RθJC) is 1.5 °C/W when the cathode pad is soldered to ≥1 in² copper area or an external heatsink. The package meets MSL Level 1 and supports lead-free reflow up to 245 °C. Proper PCB layout-using multiple thermal vias and solid copper pour-is essential to achieve the rated RθJC. The MBRB1635HE3_B/P relies on this mechanical construction for thermal integrity.
Does MBRB1635HE3_B/P have built-in overvoltage protection?
Yes, MBRB1635HE3_B/P incorporates a guardring structure explicitly designed for overvoltage protection, as stated in the Vishay datasheet's FEATURES section. This guardring mitigates edge breakdown under high dv/dt transients and improves ruggedness against ISO 7637-2 load-dump pulses. It is not a clamp or TVS function, but a process-level enhancement to the Schottky junction geometry. This feature differentiates it from standard Schottky rectifiers and contributes to its AEC-Q101 qualification. The MBRB1635HE3_B/P leverages this for improved reliability in automotive power rails.
MBRB1635HE3_B/P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tube
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 35 V
- Current - Average Rectified (Io):
- 16A
- Voltage - Forward (Vf) (Max) @ If:
- 630 mV @ 16 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 200 µA @ 35 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB
- Operating Temperature - Junction:
- -65°C ~ 150°C
MBRB1635HE3_B/P FAQ
1.How can I place an order for MBRB1635HE3_B/P through Aetrix?
Please submit a Request for Quotation (RFQ) for MBRB1635HE3_B/P 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 MBRB1635HE3_B/P reliable?
The price and inventory of MBRB1635HE3_B/P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBRB1635HE3_B/P is usually 5 days.
3.What payment methods are accepted for MBRB1635HE3_B/P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBRB1635HE3_B/P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBRB1635HE3_B/P?
MBRB1635HE3_B/P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBRB1635HE3_B/P 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 MBRB1635HE3_B/P?
For technical support, including MBRB1635HE3_B/P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBRB1635HE3_B/P requirements.
6.How does Aetrix verify that MBRB1635HE3_B/P is sourced from the original manufacturer or authorized distributors?
All MBRB1635HE3_B/P 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 MBRB1635HE3_B/P meets industry standards.
7.What is the process for return or replacement of MBRB1635HE3_B/P?
All MBRB1635HE3_B/P units undergo pre-shipment inspection (PSI). If there is an issue with MBRB1635HE3_B/P, 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 MBRB1635HE3_B/P part is unused and in its original packaging.
Return procedure for MBRB1635HE3_B/P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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