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Diodes Incorporated MBR1640
- Part No.:
- MBR1640
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- TO-220-2
- Datasheet:
-
MBR1640.pdf
- Description:
- DIODE SCHOTTKY 40V 16A TO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,973
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Product details
Overview
MBR1640 from Diodes Incorporated is a 16A, 40V Schottky barrier rectifier in TO-220AC package, designed for low-voltage, high-frequency power conversion. It delivers 0.63V forward voltage at 16A/25°C and 0.57V at 16A/125°C, enabling high-efficiency free-wheeling and polarity protection in DC-DC converters and AC adapters.
For engineers reviewing the MBR1640 datasheet, MBR1640 pinout, MBR1640 application, or MBR1640 equivalent, key selection criteria include its 150A non-repetitive surge rating, 1.5°C/W junction-to-case thermal resistance, 450pF typical capacitance at 1MHz, and RoHS-compliant bright tin terminals suitable for industrial power supplies and automotive auxiliary systems.
Technical Context
This discrete Schottky diode uses a guard-ringed die construction to enhance transient robustness without compromising forward conduction efficiency. Its low VF and fast recovery (dV/dt rated up to 1000 V/s) minimize switching losses in high-frequency rectification circuits operating up to 150°C junction temperature.
The device is optimized for single-phase, half-wave 60Hz operation with resistive or inductive loads; capacitive loads require 20% current derating. Thermal performance assumes mounting on a heatsink, with junction-to-case resistance fixed at 1.5°C/W under specified test conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum peak repetitive reverse voltage before breakdown; sets safe operating limit in 36V nominal bus applications. |
| IO @ TC=125°C | 16 A - Continuous average forward current capability when case temperature is held at 125°C using heatsink. |
| VFM @ 16A, 25°C | 0.63 V - Forward voltage drop defining conduction loss; contributes ~10W dissipation at full load. |
| IFSM | 150 A - Single half-sine surge rating (8.3ms); supports inrush current handling in SMPS input stages. |
| RθJC | 1.5 °C/W - Junction-to-case thermal resistance; enables precise heatsink sizing for thermal management. |
| CT @ 1MHz, 4V | 450 pF - Junction capacitance affecting high-frequency switching noise and EMI filter design. |
Pinout & Package
Package: TO-220AC - 3-terminal through-hole plastic package with isolated tab, UL 94V-0 rated, 2.24g weight, lead-free bright tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry point | Connected to input/source side; must be routed with low-inductance path for high-di/dt operation. |
| Cathode (Pin 2) | Forward current exit point | Connected to output/load side; electrically tied to metal tab in standard TO-220AC configuration. |
| Tab (Case) | Cathode terminal / thermal path | Internally bonded to cathode; provides primary heat conduction path to heatsink; requires electrical isolation if cathode is not at chassis ground. |
Key Features
| Feature | Design Value |
|---|---|
| Guard-ringed Schottky die | Improves transient immunity without increasing forward voltage-critical for unregulated input stages exposed to load dump or inductive kick. |
| Low VF at high temperature | 0.57V @ 16A/125°C ensures stable efficiency across automotive under-hood temperature range. |
| High surge rating (150A) | Withstands repeated cold-start surges in 12V/24V battery-fed systems without degradation. |
| RoHS-compliant tin finish | Bright tin plating meets MIL-STD-202 solderability requirements and eliminates lead-based assembly concerns. |
Applications
| DC-DC Converter Output Rectification | Automotive Auxiliary Power Supply |
|---|---|
Use Scenario: Secondary-side synchronous rectification replacement in 12V–48V isolated flyback or forward converters. IC Role / Device Role / Timing Role: Uncontrolled rectifier providing low-loss DC path during freewheeling phase. Use Value: 0.63V VF reduces conduction loss by ~35% vs. standard PN diodes, improving efficiency by 1.2–1.8% at 10A load. | Use Scenario: Reverse polarity protection and battery feed rectification in vehicle infotainment or ADAS camera modules. IC Role / Device Role / Timing Role: Polarity guard and hold-up rectifier in 12V supply rail with cold-crank tolerance down to -40°C. Use Value: 150A IFSM withstands jump-start transients; -65°C to +150°C rating covers full automotive ambient range. |
| Industrial AC Adapter Input Stage | LED Driver Free-Wheeling Diode |
Use Scenario: Bridge rectifier output smoothing in universal-input (85–265V AC) offline SMPS for factory automation controllers. IC Role / Device Role / Timing Role: High-current output rectifier handling 16A continuous DC after bulk capacitor filtering. Use Value: 1.5°C/W RθJC allows compact heatsinking; TO-220AC mechanical stability supports vibration-prone panel-mount environments. | Use Scenario: Freewheeling path in constant-current buck LED drivers powering high-brightness street lighting arrays. IC Role / Device Role / Timing Role: Energy recirculation path during MOSFET off-time to maintain LED current continuity. Use Value: 450pF CT minimizes high-frequency ringing; low VF prevents thermal runaway in thermally constrained aluminum-core PCBs. |
Availability
MBR1640 is available at Aetrix Electronics and suitable for DC-DC converter output rectification, automotive auxiliary power supply, and industrial AC adapter input stage requiring stable component supply and long-term manufacturability.
Supply support for MBR1640 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 US.
The MBR16xx series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for efficiency-critical 12–48V power conversion where low forward voltage and thermal reliability are mandatory.
FAQ
Is MBR1640 pin-compatible with MBR1635 or MBR1645?
Yes-MBR1640 shares identical TO-220AC package, pinout (anode/cathode/tab), and mechanical dimensions with MBR1635 and MBR1645. Only the rated VRRM differs: 35V, 40V, and 45V respectively. No layout change is needed when substituting within this family for voltage margin adjustment.
Can MBR1640 be used without a heatsink?
No-its 16A IO rating is specified only at TC = 125°C, requiring active heatsinking. At ambient temperatures above 50°C or without thermal interface material, junction temperature exceeds 150°C even at 8A, risking premature failure.
What is the maximum allowable case temperature for continuous operation?
The absolute maximum case temperature is 125°C per datasheet ratings. Sustained operation above this value violates the IO derating curve and risks irreversible parametric shift. Derating begins linearly at 125°C, reaching zero current at 150°C case temperature.
Does MBR1640 have avalanche rating or repetitive surge capability?
No-it has no specified avalanche energy rating. The 150A IFSM is a non-repetitive, single-half-sine rating (8.3ms). Repeated surges exceeding 50A require external clamping or soft-start circuitry to avoid cumulative junction damage.
MBR1640 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-220-2
- Packaging:
- Tube
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 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 @ 40 V
- Capacitance @ Vr, F:
- 450pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AC
- Operating Temperature - Junction:
- -65°C ~ 150°C
MBR1640 FAQ
1.How can I place an order for MBR1640 through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR1640 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 MBR1640 reliable?
The price and inventory of MBR1640 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR1640 is usually 5 days.
3.What payment methods are accepted for MBR1640?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR1640 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR1640?
MBR1640 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR1640 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 MBR1640?
For technical support, including MBR1640 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR1640 requirements.
6.How does Aetrix verify that MBR1640 is sourced from the original manufacturer or authorized distributors?
All MBR1640 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 MBR1640 meets industry standards.
7.What is the process for return or replacement of MBR1640?
All MBR1640 units undergo pre-shipment inspection (PSI). If there is an issue with MBR1640, 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 MBR1640 part is unused and in its original packaging.
Return procedure for MBR1640:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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