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Diodes Incorporated B120BE-13
- Part No.:
- B120BE-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
B120BE-13.pdf
- Description:
- DIODE SCHOTTKY 20V 1A SMB
- Quantity:
- Payment:
- Shipping:
Inventory:3,949
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Product details
Overview
B120BE-13 from Diodes Incorporated is a 20 V, 1 A surface-mount Schottky barrier rectifier in SMB package, featuring 0.5 V max forward voltage at 1 A and 0.1 mA max reverse leakage at 20 V/25°C, optimized for boost, blocking, and recirculating diode roles in DC-DC converters and power supplies.
For engineers reviewing the B120BE-13 datasheet, B120BE-13 pinout, B120BE-13 application, or B120BE-13 equivalent, key selection criteria include low VF for efficiency, high-temperature IR stability, SMB thermal resistance (RθJA = 90°C/W), RoHS/Green compliance, and compatibility with automated SMT assembly.
Technical Context
This Schottky rectifier uses a planar metal-semiconductor junction to achieve low forward conduction loss and fast switching with no minority-carrier storage delay. Its 20 V VRRM rating targets low-voltage DC-DC stages where reverse stress remains constrained.
Thermal design is supported by RθJC = 40°C/W and RθJA = 90°C/W on standard FR-4 PCBs, enabling 1 A continuous operation up to +125°C ambient when properly laid out. Reverse leakage remains stable ≤0.1 mA at +25°C and ≤6.1 mA at +125°C under rated VR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit in low-voltage buck/boost topologies |
| IO(AV) | 1 A - Average rectified current at TA = +25°C; derates to ~0.6 A at +100°C per Figure 4 |
| VF(max) | 0.5 V @ 1 A, +25°C - Low conduction loss improves converter efficiency and reduces thermal load |
| IR(max) | 0.1 mA @ 20 V, +25°C - Tight leakage spec ensures minimal standby power loss in battery-powered systems |
| RθJA | 90 °C/W - Thermal resistance from junction to ambient on standard SMB PCB layout; informs heatsinking needs |
| CT(typ) | 50 pF @ 4 V, 1 MHz - Junction capacitance impacts high-frequency switching noise and snubber design |
Pinout & Package
SMB (DO-214AA) surface-mount plastic package with cathode band marking; 4.06–4.57 mm length, 3.30–3.94 mm width, 1.96–2.21 mm height; matte tin–annealed copper leadframe; polarity indicated by molded cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in boost, ground in blocking configuration) |
| Cathode | Forward current exit / reverse-blocking terminal | Connected to higher-potential output rail; cathode band identifies this terminal visually and in layout |
Key Features
| Feature | Design Value |
|---|---|
| Low VF (0.5 V max @ 1 A) | Reduces conduction loss by >30% vs. comparable PN rectifiers, directly improving light-load efficiency in 3.3 V/5 V DC-DC stages |
| Stable high-temp IR (≤6.1 mA @ 125°C) | Prevents thermal runaway in compact enclosures or high-ambient environments like automotive under-hood modules |
| SMB package with 90°C/W RθJA | Enables higher power density than SMA variants while maintaining manufacturability on standard SMT lines |
| RoHS-compliant & Halogen/Antimony-free | Meets IPC-1752A material declaration requirements for industrial and consumer end-equipment compliance |
Applications
| Boost Diode | Blocking Diode |
|---|---|
Use Scenario: Used in step-up DC-DC converters to transfer energy from inductor to output capacitor during switch-off phase. IC Role / Device Role / Timing Role: Unidirectional current path enabling voltage multiplication; conducts only during flyback interval. Use Value: 0.5 V VF minimizes voltage drop across diode, preserving output regulation margin and efficiency at 1 A load. | Use Scenario: Isolates backup power source (e.g., supercapacitor or battery) from main supply rail to prevent backfeed. IC Role / Device Role / Timing Role: Reverse-biased during normal operation; conducts only during primary supply failure. Use Value: 0.1 mA IR at 25°C ensures negligible self-discharge, extending hold-up time in power-loss scenarios. |
| Recirculating Diode | Low-Voltage Rectification |
Use Scenario: Provides current path for inductive kickback in solenoid drivers, relay coils, or motor H-bridge freewheeling. IC Role / Device Role / Timing Role: Clamps inductive voltage spike by conducting reverse-recovery current immediately after switch turn-off. Use Value: Zero recovery time eliminates switching losses and EMI spikes common with PN diodes in 20 V-rated loads. | Use Scenario: AC-to-DC rectification in low-voltage auxiliary supplies (e.g., 12 V → 5 V or 3.3 V linear post-regulator inputs). IC Role / Device Role / Timing Role: Half-wave or full-wave rectifier converting transformer secondary output to unregulated DC. Use Value: SMB footprint supports high-density board layouts; 1 A rating covers typical bias supply loads without heatsinking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB120-E3/54 (Vishay) | Same 20 V/1 A rating; VF = 0.5 V max @ 1 A, but IR = 0.5 mA @ 20 V/25°C - 5× higher leakage | Less suitable for battery-critical or high-temperature hold-up circuits due to elevated IR | Select B120BE-13 where low leakage dominates over cost; SB120-E3/54 acceptable in non-critical 25°C ambient use |
| SS12 (ON Semiconductor) | SMA package (RθJA = 95°C/W); identical VF/IR specs but 0.03 g lighter; no halogen-free certification stated | Lower thermal performance limits sustained 1 A operation above +85°C ambient | Choose B120BE-13 for SMB mechanical robustness and verified Green compliance; SS12 fits space-constrained SMA layouts |
Compared with SB120-E3/54 and SS12, B120BE-13 delivers superior high-temperature leakage control and certified halogen-free construction in a thermally advantaged SMB package-critical for reliability in automotive and industrial power rails.
Availability
B120BE-13 is available at Aetrix Electronics and suitable for boost diode, blocking diode, and recirculating diode applications requiring stable component supply, consistent RoHS/Green compliance, and SMB thermal performance.
Supply support for B120BE-13 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, serving industrial, computing, communications, and consumer markets since 1960.
The B120BE-13 belongs to Diodes' general-purpose Schottky rectifier product line, engineered for high-efficiency, low-voltage power conversion in space- and thermally-constrained applications.
FAQ
What is the maximum junction temperature for continuous operation?
The B120BE-13 has an operating junction temperature range of –55°C to +150°C. Continuous operation at 1 A requires maintaining TJ ≤ +150°C, achievable up to ~+100°C ambient with proper PCB copper area per Figure 4 derating curve and RθJA = 90°C/W.
Is the B120BE-13 suitable for automotive applications?
Yes, the B120BE-13 meets AEC-Q101 stress test requirements for discrete semiconductors and operates reliably from –55°C to +150°C. Its low VF and stable IR support under-hood DC-DC converters and body-control module power rails.
How does the SMB package compare to SMA in thermal performance?
The SMB package offers RθJA = 90°C/W versus SMA's 95°C/W on identical PCBs, delivering ~5% better junction-to-ambient heat dissipation. Its larger footprint also improves mechanical stability during reflow and board flexure.
Does the B120BE-13 have a specified reverse recovery time?
No-Schottky barrier rectifiers like the B120BE-13 exhibit no minority-carrier storage, so reverse recovery time is effectively zero. This eliminates switching losses and EMI associated with PN diodes in high-frequency DC-DC converters.
B120BE-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 20 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 20 V
- Capacitance @ Vr, F:
- 50pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
- Operating Temperature - Junction:
- -55°C ~ 150°C
B120BE-13 FAQ
1.How can I place an order for B120BE-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for B120BE-13 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 B120BE-13 reliable?
The price and inventory of B120BE-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B120BE-13 is usually 5 days.
3.What payment methods are accepted for B120BE-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B120BE-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B120BE-13?
B120BE-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B120BE-13 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 B120BE-13?
For technical support, including B120BE-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B120BE-13 requirements.
6.How does Aetrix verify that B120BE-13 is sourced from the original manufacturer or authorized distributors?
All B120BE-13 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 B120BE-13 meets industry standards.
7.What is the process for return or replacement of B120BE-13?
All B120BE-13 units undergo pre-shipment inspection (PSI). If there is an issue with B120BE-13, 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 B120BE-13 part is unused and in its original packaging.
Return procedure for B120BE-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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