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Diodes Incorporated B340CE-13
- Part No.:
- B340CE-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
B340CE-13.pdf
- Description:
- DIODE SCHOTTKY 40V 3A SMC
- Quantity:
- Payment:
- Shipping:
Inventory:1,811
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Product details
Overview
B340CE-13 from Diodes Incorporated is a 40 V, 3 A surface-mount Schottky barrier rectifier in SMC package, featuring 0.5 V max forward voltage at 3 A and 0.20 mA max reverse leakage at 40 V/25°C, optimized for boost, blocking, and recirculating diode roles in DC-DC converters and power supplies.
For engineers reviewing the B340CE-13 datasheet, B340CE-13 pinout, B340CE-13 application, or B340CE-13 equivalent, key selection criteria include its low VF for efficiency-critical 12–24 V input rails, high-temperature IR stability up to +150°C, SMC thermal resistance (RθJC = 30°C/W), and RoHS-compliant matte tin terminations.
Technical Context
This Schottky rectifier uses a planar metal-semiconductor junction to achieve fast switching (no minority-carrier storage) and low conduction loss. Its 40 V VRRM rating targets mid-voltage industrial and automotive auxiliary power rails, while the 80 A IFSM surge rating supports transient load conditions in buck-boost topologies.
The device operates across –55°C to +150°C with stable reverse leakage-0.20 mA at 25°C and ≤30 mA at 45 V/125°C-enabling reliable performance in thermally constrained PCB layouts where SMB alternatives would exceed thermal limits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse voltage before breakdown; sets usable input range for 24 V nominal systems. |
| IO(AV) | 3 A - Continuous DC forward current at TA = +25°C; derates to ~1.8 A at +100°C per Figure 4. |
| VF(max) | 0.50 V @ 3 A, 25°C - Low conduction loss enables >92% efficiency in 5–12 V output converters. |
| IR(max) | 0.20 mA @ 40 V, 25°C - Tight leakage spec minimizes standby power loss in always-on circuits. |
| RθJC | 30°C/W - Junction-to-case thermal resistance enables direct heatsinking via copper pour or metal-core PCB. |
| Package | SMC - 6.6 mm × 7.1 mm body with 2.75 mm height; 0.21 g mass; UL 94V-0 molding compound. |
Pinout & Package
Two-terminal device in SMC package: anode and cathode marked by polarity band on cathode end. Molded plastic case with matte tin–annealed copper leadframe; solderable per MIL-STD-202, Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in boost, input rail in blocking). |
| Cathode | Forward current exit / reverse-blocking terminal | Marked with band; connects to higher-potential node (e.g., output capacitor, VOUT rail). |
Key Features
| Feature | Design Value |
|---|---|
| Low VF at rated current | 0.50 V max @ 3 A ensures <1.5 W conduction loss at full load-critical for thermally limited enclosures. |
| High-temp IR stability | 0.20 mA @ 25°C and ≤30 mA @ 45 V/125°C prevents thermal runaway in sealed power modules. |
| RoHS & "Green" compliance | Br/Cl <900 ppm, Sb <1000 ppm, Pb-free; meets EU RoHS 3 and automotive change-control requirements. |
| Robust surge capability | 80 A non-repetitive peak forward surge (8.3 ms half-sine) withstands inrush and fault transients. |
Applications
| Boost Diode in 24V DC-DC Converter | Blocking Diode in Solar Charge Controller |
|---|---|
Use Scenario: Used in continuous-conduction-mode boost converter stepping 12–24 V input to 48 V output. IC Role / Device Role / Timing Role: Freewheeling path during high-side switch off-time; conducts 3 A average current. Use Value: 0.5 V VF reduces power loss by 35% vs. standard PN rectifier, lowering MOSFET stress and thermal design margin. | Use Scenario: Prevents battery discharge through PV panel at night in 24 V off-grid solar system. IC Role / Device Role / Timing Role: Unidirectional current gate between panel and battery; blocks reverse current continuously. Use Value: 0.20 mA IR at 25°C limits nightly self-discharge to <0.5 mAh/day-preserving >99.8% state-of-charge over 72 h. |
| Recirculating Diode in Automotive Fan Driver | Output Rectifier in Industrial SMPS |
Use Scenario: Clamps inductive kickback from 12 V brushed DC fan motor driven by N-channel MOSFET. IC Role / Device Role / Timing Role: Provides low-loss return path during PWM off-cycle; handles 3 A peak flyback current. Use Value: Fast recovery (Schottky) eliminates reverse recovery loss; 30°C/W RθJC sustains operation at +105°C under hood. | Use Scenario: Secondary-side rectification in 48 V output, 300 W industrial AC-DC supply. IC Role / Device Role / Timing Role: Converts transformer secondary AC to regulated DC; conducts 3 A average output current. Use Value: SMC package enables 2× thermal margin vs. SMB; 0.5 V VF maintains >90% full-load efficiency at 60°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS34H (ON Semiconductor) | Same 40 V VRRM, 3 A IO, but VF = 0.55 V max @ 3 A; RθJC = 35°C/W in SMA. | SMA package has higher thermal resistance; less suitable for sustained 3 A loads above 70°C ambient. | Select when cost sensitivity outweighs thermal margin; verify layout copper area for derating. |
| SB340 (Good-Ark) | Identical 40 V/3 A rating and SMC package, but IR = 0.30 mA @ 40 V/25°C (vs. 0.20 mA). | Higher leakage may impact ultra-low-power standby modes in battery-backed systems. | Acceptable for non-critical industrial use; avoid in energy-harvesting or always-on IoT nodes. |
Compared with SS34H and SB340, B340CE-13 delivers the lowest combined VF and IR specification in SMC, enabling higher efficiency and better thermal headroom in space-constrained 24–48 V power stages without requiring forced air cooling.
Availability
B340CE-13 is available at Aetrix Electronics and suitable for DC-DC converters, solar charge controllers, automotive fan drivers, and industrial SMPS requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for B340CE-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.
B340CE-13 belongs to Diodes' B3xxCE Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in industrial, computing, and automotive auxiliary systems where low VF and controlled IR are critical.
FAQ
What is the maximum junction temperature for continuous operation?
The B340CE-13 has an operating junction temperature range of –55°C to +150°C. For continuous 3 A DC operation, thermal design must ensure TJ does not exceed +150°C-achievable with ≥250 mm² 2-oz copper pad per Figure 4 derating curve and RθJC = 30°C/W.
Is B340CE-13 suitable for automotive under-hood applications?
Yes-B340CE-13 meets AEC-Q101 requirements for discrete semiconductors. Its 150°C max TJ, stable IR up to 125°C, and RoHS/Green compliance make it qualified for engine control units, HVAC blowers, and lighting modules in passenger vehicles.
How does the SMC package compare thermally to SMB for this device?
SMC offers RθJC = 30°C/W versus SMB's 50°C/W, delivering 40% lower junction-to-case resistance. At 3 A, this translates to ~12°C lower TJ rise under identical board conditions-critical for maintaining reliability in compact, sealed enclosures.
Can B340CE-13 replace B340BE-13 in new designs?
Yes-both share identical electrical specs and SMC/SMB footprint compatibility, but B340CE-13 uses the larger SMC package with superior thermal performance. Use B340CE-13 where thermal headroom or long-term reliability at elevated ambient temperatures is required.
B340CE-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 200 µA @ 40 V
- Capacitance @ Vr, F:
- 140pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
- Operating Temperature - Junction:
- -55°C ~ 150°C
B340CE-13 FAQ
1.How can I place an order for B340CE-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for B340CE-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 B340CE-13 reliable?
The price and inventory of B340CE-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B340CE-13 is usually 5 days.
3.What payment methods are accepted for B340CE-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B340CE-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B340CE-13?
B340CE-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B340CE-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 B340CE-13?
For technical support, including B340CE-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B340CE-13 requirements.
6.How does Aetrix verify that B340CE-13 is sourced from the original manufacturer or authorized distributors?
All B340CE-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 B340CE-13 meets industry standards.
7.What is the process for return or replacement of B340CE-13?
All B340CE-13 units undergo pre-shipment inspection (PSI). If there is an issue with B340CE-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 B340CE-13 part is unused and in its original packaging.
Return procedure for B340CE-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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