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Vishay General Semiconductor - Diodes Division MBRB1635HE3_B/I
- Part No.:
- MBRB1635HE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
MBRB1635HE3_B/I.pdf
- Description:
- DIODE SCHOTTKY 35V 16A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,830
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Product details
Overview
MBRB1635HE3_B/I 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 AEC-Q101 qualification for automotive-grade reliability in DC/DC converters and polarity protection circuits.
For engineers reviewing the MBRB1635HE3_B/I datasheet, MBRB1635HE3_B/I pinout, MBRB1635HE3_B/I application, or MBRB1635HE3_B/I equivalent, key selection criteria include junction-to-case thermal resistance (1.5 °C/W), MSL Level 1 moisture sensitivity, matte tin-plated solderable terminals, and guardring-enabled overvoltage protection - all critical for high-efficiency, thermally constrained power designs.
Technical Context
This device is a single-die, planar Schottky barrier rectifier with integrated guardring structure to suppress edge breakdown and improve ruggedness under transient overvoltage conditions. Its low VF and fast switching enable high efficiency in low-voltage, high-frequency topologies such as synchronous buck converters and OR-ing circuits.
Designed for surface-mount assembly on thermally enhanced PCBs, the D2PAK package features an exposed heatsink tab (Pin 3) electrically connected to the cathode, supporting direct thermal coupling to copper planes. The device operates across -65 °C to +150 °C junction temperature range and meets JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 35 V - Maximum repetitive reverse blocking capability; sets upper limit for input voltage in 12 V–24 V DC/DC systems |
| IF(AV) | 16 A at TC = 125 °C - Continuous forward current rating under real-world heatsink-limited thermal conditions |
| IFSM | 150 A (8.3 ms half-sine) - Withstands inrush and fault currents without destruction in power supply startup or short-circuit events |
| VF | 0.57 V @ 16 A, 125 °C - Low conduction loss directly reduces power dissipation and improves system efficiency |
| RθJC | 1.5 °C/W - Enables predictable thermal design when mounted to external heatsink or large copper pour |
| TJ max. | +150 °C - Supports operation in under-hood automotive environments and sealed industrial enclosures |
| dV/dt | 10 000 V/μs - High commutation robustness prevents false turn-on during fast-switching transients |
Pinout & Package
Package: D2PAK (TO-263AB), surface-mount, thermally enhanced with exposed cathode heatsink tab (Pin 3). Mold compound meets UL 94 V-0; matte tin-plated leads comply with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Anode connection | Input-side terminal for forward current flow; requires PCB trace sizing for 16 A continuous current |
| Pin 2 (Cathode) | Cathode connection | Output-side terminal; electrically tied to exposed heatsink tab (Pin 3) for low-inductance return path |
| Pin 3 (Heatsink Tab) | Cathode / Thermal interface | Electrically active cathode node and primary thermal conduction path; must be soldered to ≥ 200 mm² copper area or external heatsink |
Key Features
| Feature | Design Value |
|---|---|
| Guardring structure | Suppresses edge breakdown under high dV/dt, enabling reliable operation at rated VRRM without derating |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS power rails per stress test requirements |
| Low IR at high TJ | 50 mA max reverse leakage @ 35 V, 125 °C - Minimizes standby power loss in always-on systems |
| MSL Level 1 | Unlimited floor life at ≤ 30 °C/60 % RH - Eliminates bake requirement before reflow assembly |
| JESD201 Class 2 whisker resistance | Qualified for long-term reliability in high-vibration environments such as powertrain modules |
Applications
| Automotive DC/DC Converter | Industrial Polarity Protection |
|---|---|
Use Scenario: Step-down conversion from 24 V battery to 5 V/3.3 V for infotainment and body control modules. IC Role / Device Role / Timing Role: Output rectifier in synchronous buck converter; handles high-frequency switching current with minimal conduction loss. Use Value: 0.57 V VF at 125 °C reduces power loss by >30 % vs. standard silicon diodes, lowering thermal load on compact PCB layouts. | Use Scenario: Reverse-voltage protection on 12 V auxiliary power inputs in PLC backplanes and motor drives. IC Role / Device Role / Timing Role: Series-connected freewheeling diode that blocks reverse polarity while conducting forward load current up to 16 A. Use Value: Guardring-enhanced ruggedness withstands 150 A surge events during hot-plug insertion, preventing latch-up or catastrophic failure. |
| Server PSU Secondary Side | Telecom DC/DC Module |
Use Scenario: Secondary-side rectification in 48 V–12 V intermediate bus converters for AI accelerator racks. IC Role / Device Role / Timing Role: High-current output rectifier operating at 300–500 kHz switching frequency with tight thermal constraints. Use Value: RθJC = 1.5 °C/W enables direct thermal coupling to heatsink, maintaining TJ < 135 °C at full load without forced air. | Use Scenario: Input rectification in isolated 48 V–3.3 V DC/DC modules for 5G baseband units. IC Role / Device Role / Timing Role: Freewheeling diode in active clamp forward topology; clamps leakage inductance energy with low recovery loss. Use Value: 10 000 V/μs dV/dt rating prevents spurious turn-on during fast gate-drive transitions, ensuring stable regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS1635CW | Same VRRM (35 V), IF(AV) (16 A), D2PAK package; VF = 0.55 V @ 16 A, 125 °C - slightly lower conduction loss | No AEC-Q101 qualification; commercial grade only | Select when automotive qualification is not required and lowest possible VF is prioritized |
| ON Semi MBR1635CT | Dual common-cathode configuration in TO-220AC; VF = 0.62 V @ 16 A, 125 °C; higher RθJC (2.5 °C/W) | Through-hole mounting; no exposed heatsink tab; unsuitable for high-density SMT layouts | Select for legacy through-hole designs or where dual-diode functionality is needed |
Compared with STPS1635CW and MBR1635CT, the MBRB1635HE3_B/I uniquely combines AEC-Q101 qualification, MSL Level 1 handling, and optimized thermal performance in D2PAK - making it the preferred choice for automotive and high-reliability SMT power supplies where board space and thermal management are constrained.
Availability
MBRB1635HE3_B/I is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial polarity protection circuits, and telecom DC/DC modules requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for MBRB1635HE3_B/I 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 Intertechnology is a global manufacturer of discrete semiconductors and passive components, specializing in high-reliability power, sensing, and signal conditioning solutions.
The MBRB16xx series belongs to Vishay's automotive-qualified Schottky rectifier product line, engineered for high-efficiency, high-ruggedness power conversion in demanding environments including engine compartments and industrial control cabinets.
FAQ
What is the maximum junction temperature rating for MBRB1635HE3_B/I?
The MBRB1635HE3_B/I has a maximum junction temperature (TJ) of +150 °C, verified per Vishay's datasheet revision 01-Apr-2026. This rating allows sustained operation in under-hood automotive locations and sealed industrial enclosures. Derating curves confirm 16 A average forward current is maintainable up to TC = 125 °C, provided thermal design achieves ≤ 1.5 °C/W junction-to-case resistance. The MBRB1635HE3_B/I must not exceed this limit to ensure long-term reliability and AEC-Q101 compliance.
Is MBRB1635HE3_B/I pin-compatible with other D2PAK Schottky rectifiers?
Yes, the MBRB1635HE3_B/I uses the standard D2PAK (TO-263AB) footprint with Pin 1 (anode), Pin 2 (cathode), and Pin 3 (exposed cathode heatsink tab), matching industry-standard land patterns. However, electrical compatibility depends on VRRM, IF(AV), and thermal characteristics - for example, MBRB1645HE3_B/I shares the same pinout but has 45 V VRRM. Always verify forward voltage, surge rating, and qualification status before substitution. The MBRB1635HE3_B/I is not a drop-in replacement for non-AEC-Q101 variants in automotive designs.
Does MBRB1635HE3_B/I require special handling during PCB assembly?
No special handling is required: the MBRB1635HE3_B/I is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life at ≤ 30 °C/60 % RH and can be placed directly into reflow without baking. Its matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability standards. Reflow profile must respect peak temperature ≤ 245 °C (LF maximum) and avoid thermal shock. The MBRB1635HE3_B/I heatsink tab must be fully soldered to a thermally robust copper area to achieve specified RθJC.
What does the "HE3_B/I" suffix indicate in MBRB1635HE3_B/I?
The "HE3_B/I" suffix denotes Vishay's packaging and qualification coding: "HE3" indicates tape-and-reel packaging per EIA-481 standard; "B" specifies the D2PAK (TO-263AB) package variant; and "I" identifies the reel quantity (800 units/reel). This full part number confirms AEC-Q101 qualification (via HM3 base code), RoHS-compliance, halogen-free construction, and JESD201 Class 2 whisker resistance. The MBRB1635HE3_B/I is distinct from commercial-grade MBRB1635-M3/I variants lacking automotive qualification.
How does the guardring feature improve reliability of MBRB1635HE3_B/I?
The guardring in the MBRB1635HE3_B/I is a diffused p-type region surrounding the main Schottky junction, which controls electric field distribution at the die edge. This prevents premature avalanche breakdown under high dV/dt transients or reverse-biased surge conditions - a common failure mode in unguarded Schottky diodes. As a result, the MBRB1635HE3_B/I maintains stable VRRM performance without derating and sustains 150 A IFSM capability even after repeated stress. This structural enhancement is validated in AEC-Q101 testing and directly contributes to its use in mission-critical automotive power rails.
MBRB1635HE3_B/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- 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/I FAQ
1.How can I place an order for MBRB1635HE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for MBRB1635HE3_B/I 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/I reliable?
The price and inventory of MBRB1635HE3_B/I 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/I is usually 5 days.
3.What payment methods are accepted for MBRB1635HE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBRB1635HE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBRB1635HE3_B/I?
MBRB1635HE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBRB1635HE3_B/I 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/I?
For technical support, including MBRB1635HE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBRB1635HE3_B/I requirements.
6.How does Aetrix verify that MBRB1635HE3_B/I is sourced from the original manufacturer or authorized distributors?
All MBRB1635HE3_B/I 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/I meets industry standards.
7.What is the process for return or replacement of MBRB1635HE3_B/I?
All MBRB1635HE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with MBRB1635HE3_B/I, 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/I part is unused and in its original packaging.
Return procedure for MBRB1635HE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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