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Diodes Incorporated B140AE-13
- Part No.:
- B140AE-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
B140AE-13.pdf
- Description:
- DIODE SCHOTTKY 40V 1A SMA
- Quantity:
- Payment:
- Shipping:
Inventory:6,540
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Product details
Overview
B140AE-13 from Diodes Incorporated is a 40 V, 1 A surface-mount Schottky barrier rectifier in SMA package, featuring 0.5 V max forward voltage at 1 A and 0.2 mA max reverse leakage at 40 V/25°C. It delivers low conduction loss and stable high-temperature leakage performance for DC-DC converter output rectification, boost diode applications, and recirculating paths in industrial power supplies.
For engineers reviewing the B140AE-13 datasheet, B140AE-13 pinout, B140AE-13 application, or B140AE-13 equivalent, key selection criteria include its 40 V reverse voltage rating, 1 A average rectified current capability, thermal resistance of 95 °C/W (junction-to-ambient), RoHS-compliant matte tin finish, and cathode-band polarity marking on SMA package.
Technical Context
This Schottky rectifier uses a planar metal-semiconductor junction to achieve low forward voltage drop and fast switching with no minority-carrier storage delay. Its design targets high-efficiency, high-frequency rectification where low VF and controlled IR are critical.
Rated for continuous operation from –55°C to +150°C, it maintains ≤0.2 mA reverse leakage at 40 V and 25°C, and exhibits typical junction capacitance of 50 pF at 4.0 V/1 MHz - enabling stable performance in SMPS output stages and flyback snubbers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit in 36 V nominal systems. |
| IO(AV) | 1 A - Average rectified output current at TA = 25°C; derates to ~0.6 A at 100°C ambient per Figure 4. |
| VF(max) | 0.5 V @ 1 A, 25°C - Low conduction loss enables >92% efficiency in 5 V–12 V output rectifiers. |
| IR(max) | 0.2 mA @ 40 V, 25°C - Tight leakage control supports reliability in thermally stressed environments. |
| RθJA | 95 °C/W - Thermal resistance defines junction temperature rise under PCB-mounted conditions (0.4" × 0.5", 2 oz Cu). |
| CT(typ) | 50 pF @ 4 V, 1 MHz - Low junction capacitance minimizes switching noise and EMI in high-frequency converters. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case with UL 94V-0 rating, cathode band marking, matte tin-plated copper leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., switch node in boost, source in synchronous rectifier assist). |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; ties to output rail or positive bus; blocks reverse current up to 40 V. |
Key Features
| Feature | Design Value |
|---|---|
| Low VF Schottky architecture | 0.5 V max at 1 A/25°C reduces conduction loss by ≥30% vs. standard PN rectifiers. |
| High-temp IR stability | 0.2 mA max leakage at 40 V/25°C and <10 mA at 40 V/125°C prevents thermal runaway in enclosed designs. |
| RoHS & Green compliant | Lead-free, halogen-free (<900 ppm Br+Cl), antimony-free - meets EU Directive 2011/65/EU and IPC-1752A. |
| SMA package thermal performance | 95 °C/W RθJA enables 1 A operation without heatsink on standard FR-4 PCBs. |
Applications
| DC-DC Converter Output Rectification | Boost Converter Diode |
|---|---|
Use Scenario: Rectifying output of non-isolated buck-boost or flyback converters delivering 3.3 V–24 V at up to 1 A. IC Role / Device Role / Timing Role: Unidirectional current path that conducts during diode-on phase and blocks reverse voltage during switch-on phase. Use Value: 0.5 V VF minimizes power loss and thermal stress; 40 V VRRM safely handles reflected spikes in 24 V input systems. | Use Scenario: Boost diode in 12 V automotive or industrial DC-DC modules stepping up to 24 V or 48 V rails. IC Role / Device Role / Timing Role: Blocks reverse current from output capacitor while allowing inductor energy transfer during switch-off interval. Use Value: Fast recovery (no stored charge) eliminates reverse recovery loss; low IR ensures stable regulation under load transients. |
| Blocking Diode in Power ORing | Recirculating Diode in Solenoid/Relay Drivers |
Use Scenario: Preventing backfeed between redundant 5 V or 12 V power sources in telecom or server boards. IC Role / Device Role / Timing Role: Forward-biased only when upstream source voltage exceeds downstream rail; blocks reverse current otherwise. Use Value: 1 A IO rating supports dual-rail redundancy; low VF avoids significant voltage drop across ORing path. | Use Scenario: Freewheeling path for inductive loads such as 12 V solenoids or relay coils in PLC I/O modules. IC Role / Device Role / Timing Role: Provides low-impedance path for coil current decay when driver FET turns off. Use Value: 30 A IFSM surge rating absorbs inductive kick energy; 0.5 V VF limits dissipation during extended recirculation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS14 (SMA) | Same 40 V VRRM, 1 A IO, but VF = 0.5 V @ 1 A/25°C (typical 0.45 V); IR = 0.5 mA @ 40 V/25°C - higher leakage. | Acceptable in ambient-temperature-limited designs; less suitable above 85°C due to elevated IR. | Select SS14 only if cost sensitivity outweighs thermal margin requirements. |
| MBR140 (SMA) | 40 V VRRM, 1 A IO, VF = 0.55 V @ 1 A/25°C; IR = 0.1 mA @ 40 V/25°C - tighter leakage but higher VF. | Better for low-leakage precision bias networks; less efficient in high-current rectification. | Prefer MBR140 where reverse leakage dominates system error budget over conduction loss. |
Compared with SS14 and MBR140, B140AE-13 balances low VF (0.5 V max) and moderate IR (0.2 mA) within a qualified SMA footprint - making it optimal for cost-sensitive, thermally constrained 1 A rectification where both efficiency and reliability matter.
Availability
B140AE-13 is available at Aetrix Electronics and suitable for DC-DC converter output rectification, boost converter diode placement, and recirculating diode roles requiring stable component supply, consistent RoHS compliance, and verified thermal performance on FR-4 PCBs.
Supply support for B140AE-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, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
The B120AE–B140AE series belongs to Diodes' general-purpose Schottky rectifier product line, engineered for high-efficiency, high-reliability rectification in space-constrained industrial and consumer power supplies.
FAQ
What is the maximum junction temperature for continuous operation of B140AE-13?
The device is rated for continuous operation from –55°C to +150°C junction temperature. At 1 A DC current and 25°C ambient on a standard FR-4 PCB (0.4" × 0.5", 2 oz Cu), junction temperature rises ~95°C above ambient - reaching ~120°C, well within the 150°C absolute maximum rating.
Is B140AE-13 suitable for use in automotive applications?
B140AE-13 meets AEC-Q200 stress test requirements for passive components and operates reliably from –55°C to +150°C. However, it is not AEC-Q101 qualified as a discrete semiconductor. For automotive under-hood use, validation against specific environmental and lifetime requirements is required.
Does B140AE-13 have a specified reverse recovery time (trr)?
No - as a Schottky barrier rectifier, B140AE-13 has no minority carrier storage and therefore no defined reverse recovery time. Its switching is limited only by junction capacitance (50 pF typical) and circuit inductance, enabling clean turn-off in high-frequency SMPS applications.
Can B140AE-13 be used in place of a PN junction rectifier like 1N4007?
Only in low-voltage, high-efficiency applications ≤40 V. While B140AE-13 offers lower VF and faster switching than 1N4007, its 40 V VRRM is far below 1N4007's 1000 V rating. Substitution is valid only where reverse voltage remains ≤40 V and thermal design accounts for higher leakage at elevated temperatures.
B140AE-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 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:
- 200 µA @ 40 V
- Capacitance @ Vr, F:
- 50pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
B140AE-13 FAQ
1.How can I place an order for B140AE-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for B140AE-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 B140AE-13 reliable?
The price and inventory of B140AE-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B140AE-13 is usually 5 days.
3.What payment methods are accepted for B140AE-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B140AE-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B140AE-13?
B140AE-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B140AE-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 B140AE-13?
For technical support, including B140AE-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B140AE-13 requirements.
6.How does Aetrix verify that B140AE-13 is sourced from the original manufacturer or authorized distributors?
All B140AE-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 B140AE-13 meets industry standards.
7.What is the process for return or replacement of B140AE-13?
All B140AE-13 units undergo pre-shipment inspection (PSI). If there is an issue with B140AE-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 B140AE-13 part is unused and in its original packaging.
Return procedure for B140AE-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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