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Vishay General Semiconductor - Diodes Division MBR1635
- Part No.:
- MBR1635
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- TO-220-2
- Datasheet:
-
MBR1635.pdf
- Description:
- DIODE SCHOTTKY 35V 16A TO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,931
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Product details
Overview
MBR1635 from Diodes Incorporated is a 16A, 35V Schottky barrier rectifier in TO220AC package, designed for low-voltage, high-frequency DC-DC conversion, freewheeling, and polarity protection. It delivers 0.63V forward voltage at 16A/25°C, 150A non-repetitive surge capability, and 1.5°C/W junction-to-case thermal resistance for heatsink-mounted operation.
For engineers reviewing the MBR1635 datasheet, MBR1635 pinout, MBR1635 application, or MBR1635 equivalent, key selection criteria include its 35V reverse voltage rating, low VF at high current, transient robustness via guard ring die construction, and compatibility with TO220AC heatsink mounting in power supply and motor drive circuits.
Technical Context
This device operates as a unidirectional power rectifier using a Schottky barrier junction-enabling lower forward voltage drop and faster switching than PN-junction diodes. Its guard ring die construction enhances transient voltage immunity without external snubbers.
Rated for 16A average forward current at TC = +125°C, it requires heatsink mounting (RθJC = 1.5°C/W) and derates to ~10A at TC = +150°C per Fig. 1. Capacitance is 450pF at 1MHz/4V reverse bias, supporting high-frequency flyback and synchronous rectifier topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 35 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in DC-DC output stage or input polarity clamp |
| IO | 16 A - Average forward current at TC = +125°C; requires heatsink for sustained conduction |
| VFM | 0.63 V @ 16A, 25°C - Low conduction loss improves efficiency in 3.3–12V output rails |
| IFSM | 150 A - 8.3ms half-sine surge rating; withstands inrush in motor drives and SMPS startup |
| RθJC | 1.5 °C/W - Thermal resistance enables predictable junction temperature rise with standard TO220 heatsinks |
| CT | 450 pF @ 1MHz, 4V - Low capacitance minimizes switching losses in >100kHz converters |
Pinout & Package
Package: TO220AC - Molded plastic case (UL 94V-0), tin-plated terminals, 2.24g weight, intended for vertical heatsink mounting with isolated tab (cathode-connected tab).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Input current entry point | Connected to source side (e.g., switch node or input rail); must handle full load current and surge |
| Cathode (Pin 2 & 3, tied) | Output current exit point | Electrically common cathode pins; tab is cathode - requires isolation when mounted to grounded heatsink |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves ESD and dv/dt transient immunity without external protection components |
| Low forward voltage (0.63V) | Reduces conduction loss by ~40% vs. comparable silicon rectifiers at 16A, lowering thermal stress |
| 150A surge rating | Supports reliable operation during motor stall events or capacitor charging surges |
| TO220AC package with isolated cathode tab | Enables direct mechanical mounting to heatsink while maintaining electrical isolation of cathode node |
Applications
| DC-DC Converter Output Rectification | Automotive Body Control Module Power Supply |
|---|---|
Use Scenario: Secondary-side rectification in 12V-input, 3.3V/5V/12V isolated flyback or forward converters. IC Role / Device Role / Timing Role: Unidirectional power rectifier replacing fast recovery diodes to reduce conduction loss and improve efficiency. Use Value: 0.63V VF at 16A lowers power dissipation by ~10W vs. 1.1V Si diode, easing thermal design in compact enclosures. | Use Scenario: Input polarity protection and reverse-battery protection in 12V automotive ECUs. IC Role / Device Role / Timing Role: Series-connected Schottky rectifier blocking reverse current during battery jump-start or misconnection. Use Value: 35V VRRM exceeds automotive load-dump spikes (ISO 7637-2 Pulse 5a: +120V/100ms), ensuring robustness without clamping diodes. |
| Industrial Motor Freewheeling Diode | LED Driver Output Protection |
Use Scenario: Freewheeling path across brushed DC motor coils in factory automation actuators. IC Role / Device Role / Timing Role: Provides low-loss recirculation path during PWM turn-off, suppressing inductive kickback. Use Value: 150A IFSM handles peak coil currents during stall conditions; low VF minimizes heat buildup during continuous PWM operation. | Use Scenario: Output polarity guard in constant-current LED drivers powering streetlight or signage arrays. IC Role / Device Role / Timing Role: Prevents damage from accidental reverse wiring of LED strings during field installation or maintenance. Use Value: TO220AC package allows direct PCB-mount heatsinking; 16A rating supports multi-string parallel configurations up to 50W. |
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-16CTQ035 | Same 35V VRRM, 16A IO, but TO-220AB package with electrically isolated tab | Eliminates need for insulating washer when mounting to grounded heatsink | Select if system-level grounding scheme requires cathode isolation from heatsink |
| ON Semiconductor MBR1635CT | Dual-die configuration (common-cathode dual diode), same VRRM/IO, TO-220AB | Enables dual-rail output or interleaved rectification; higher package capacitance (550pF) | Select only if dual-diode topology is required; not a drop-in replacement for single-diode use |
Compared with VS-16CTQ035 and MBR1635CT, the MBR1635 offers lowest VF (0.63V) and optimized thermal resistance (1.5°C/W) in TO220AC, making it preferred for single-diode, heatsink-constrained, high-efficiency designs where cathode grounding is acceptable.
Availability
MBR1635 is available at Aetrix Electronics and suitable for DC-DC converter output rectification, automotive body control module power supplies, and industrial motor freewheeling applications requiring stable component supply despite its obsolete status.
Supply support for MBR1635 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 Plano, Texas, with design and manufacturing operations across Asia and the Americas.
The MBR1635 belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for efficiency-critical, medium-power (>100W) AC-DC and DC-DC power conversion systems operating below 48V.
FAQ
Is MBR1635 still in active production?
No - Diodes Incorporated officially discontinued the MBR1635 in July 2015, as stated in DS23011 Rev. 10-4. However, Aetrix Electronics maintains legacy inventory and supports long-term supply through authorized channel partners and controlled-batch sourcing for ongoing production programs.
What is the correct pin configuration for TO220AC mounting?
Pin 1 is Anode; Pins 2 and 3 are internally tied Cathode terminals; the metal tab is also cathode. When mounting to a heatsink, an insulating pad or shoulder washer is required unless the heatsink is floating or cathode-referenced in the circuit.
Can MBR1635 replace MBR1640 in a 40V-rated design?
No - MBR1635 has VRRM = 35V versus MBR1640's 40V. Substituting into a 40V design risks reverse breakdown under transients or elevated temperature. Derating rules require ≥20% margin; 35V is insufficient for nominal 40V operation.
Does MBR1635 meet RoHS and lead-free requirements?
Yes - the MBR1635 features a lead-free finish and complies with EU RoHS Directive 2011/65/EU (RoHS 2), including all applicable exemptions. Terminal plating is matte tin, solderable per MIL-STD-202, Method 208.
MBR1635 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- TO-220-2
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AC
- Operating Temperature - Junction:
- -65°C ~ 150°C
MBR1635 FAQ
1.How can I place an order for MBR1635 through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR1635 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 MBR1635 reliable?
The price and inventory of MBR1635 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR1635 is usually 5 days.
3.What payment methods are accepted for MBR1635?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR1635 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR1635?
MBR1635 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR1635 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 MBR1635?
For technical support, including MBR1635 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR1635 requirements.
6.How does Aetrix verify that MBR1635 is sourced from the original manufacturer or authorized distributors?
All MBR1635 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 MBR1635 meets industry standards.
7.What is the process for return or replacement of MBR1635?
All MBR1635 units undergo pre-shipment inspection (PSI). If there is an issue with MBR1635, 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 MBR1635 part is unused and in its original packaging.
Return procedure for MBR1635:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MBR1635 Tags
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