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Diodes Incorporated B140HB-13-F
- Part No.:
- B140HB-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
B140HB-13-F.pdf
- Description:
- DIODE SCHOTTKY 40V 1A SMB
- Quantity:
- Payment:
- Shipping:
Inventory:21,947
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Product details
Overview
B140HB-13-F from Diodes Incorporated is a 1.0A, 40V surface-mount Schottky barrier rectifier in SMB package, featuring low forward voltage (0.49 V at 1.0 A, 125°C), 45 A non-repetitive surge capability, and guard ring die construction for transient protection-used in DC/DC converter output rectification and low-voltage power supplies.
For engineers reviewing the B140HB-13-F datasheet, B140HB-13-F pinout, B140HB-13-F application, or B140HB-13-F equivalent, key selection criteria include forward voltage at high temperature, leakage current at 100°C, thermal resistance (36°C/W), and RMS reverse voltage rating (28 V) in compact SMB footprint.
Technical Context
This Schottky rectifier employs platinum-silicide (PtSi) or similar low-barrier metal-semiconductor junction to achieve fast switching (no minority carrier storage), zero reverse recovery time, and low conduction loss-critical for high-frequency SMPS output stages operating up to several hundred kHz.
Its guard ring die structure provides enhanced ruggedness against voltage transients and ESD events, while the SMB package's 5.0 mm² copper pad thermal path enables reliable 1.0 A continuous operation at terminal temperatures up to 115°C per derating curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Reverse Voltage | 40 V - defines maximum DC blocking capability before breakdown; sets upper limit for input/output rail separation in buck or flyback secondary side |
| Forward Voltage @ 1.0A, 125°C | 0.49 V - directly determines conduction loss (0.49 W at 1.0 A); enables >90% efficiency in 3.3 V/5 V output converters |
| Reverse Leakage @ 40V, 100°C | 4.0 mA - impacts standby power in always-on circuits; requires thermal-aware layout to avoid runaway at elevated ambient |
| Surge Current (8.3 ms) | 45 A - withstands inrush and fault currents in hot-plug or capacitor-charging scenarios without failure |
| Thermal Resistance (J–T) | 36 °C/W - with 5.0 mm² copper pad, allows ~30°C rise at 1.0 A, supporting operation in sealed enclosures up to 85°C ambient |
| Total Capacitance @ 5V | 80 pF - limits high-frequency noise coupling and affects EMI filter design in >1 MHz switching topologies |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode-banded polarity, matte tin-plated terminals, RoHS-compliant green molding compound (halogen-free).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential node (e.g., switch node in synchronous rectifier or transformer center-tap) |
| Cathode | Current exit point during forward conduction; marked by band/notch | Connected to output rail or positive bus; dictates PCB silkscreen orientation and automated placement fiducial alignment |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves transient immunity and reduces risk of localized avalanche failure under line surges or load dump conditions |
| Low VF at high temperature (0.49 V @ 125°C) | Minimizes thermal runaway risk and maintains efficiency in thermally constrained layouts (e.g., dense DC/DC modules) |
| Lead-free, RoHS-compliant plating | Enables compliance with global environmental regulations and compatibility with Pb-free reflow profiles (peak 260°C) |
| Moisture sensitivity Level 1 | Eliminates bake requirement prior to SMT assembly-reduces manufacturing cost and avoids die stress from moisture exposure |
Applications
| DC/DC Converter Output Rectification | USB Power Delivery Interface |
|---|---|
Use Scenario: Secondary-side rectification in 5 V/3.3 V buck converters powering microcontrollers and sensors. IC Role / Device Role / Timing Role: Unidirectional current valve replacing diode-based synchronous rectifier gate drive complexity. Use Value: 0.49 V VF at 125°C reduces conduction loss by ~35% vs. standard silicon diodes, improving light-load efficiency by 2–4%. |
Use Scenario: Reverse-polarity protection and VBUS path isolation in USB Type-C PD sink applications. IC Role / Device Role / Timing Role: Low-loss, fast-turn-off blocking diode preventing backfeed from battery or auxiliary rails into USB port. Use Value: 4.0 mA IR at 100°C ensures <10 µW standby leakage-critical for battery runtime in portable devices. |
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
Use Scenario: Input protection and supply rail clamping in 12 V automotive ECUs exposed to load dump transients. IC Role / Device Role / Timing Role: Transient-suppressing rectifier leveraging guard ring structure to absorb 45 A surge without degradation. Use Value: Eliminates need for external TVS in cost-sensitive BCM designs while maintaining -40°C to +125°C operational range. |
Use Scenario: Power rail decoupling and analog front-end supply isolation in 4–20 mA loop-powered sensors. IC Role / Device Role / Timing Role: Low-noise, low-capacitance (80 pF) rectifier minimizing signal coupling into precision ADC reference paths. Use Value: Enables stable 24-bit ADC performance by limiting RF ingress from switching supplies near sensitive analog sections. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS14 (Diodes Inc.) | Same SMB package, but 40 V VRRM and 1.0 A IO; VF = 0.55 V @ 1.0 A, 25°C - higher conduction loss at room temp | Lacks guard ring die; lower surge rating (30 A vs. 45 A) | Acceptable where transient immunity is not critical and thermal margin exists at 25°C |
| MBR140 (ON Semiconductor) | SMB package, 40 V, 1.0 A; VF = 0.52 V @ 1.0 A, 25°C; IR = 0.5 mA @ 40 V, 25°C - tighter leakage spec at cold temp | No specified guard ring; thermal resistance 40°C/W (vs. 36°C/W) | Preferred when low 25°C leakage dominates over high-temp VF or surge robustness |
Compared with SS14 and MBR140, B140HB-13-F delivers superior thermal performance (36°C/W), higher surge tolerance (45 A), and proven transient hardening via guard ring-making it optimal for thermally demanding or electrically noisy environments like automotive and industrial power rails.
Availability
B140HB-13-F is available at Aetrix Electronics and suitable for DC/DC converter output rectification, USB power delivery interface protection, and automotive body control module power management requiring stable component supply across production lifecycles.
Supply support for B140HB-13-F 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, specializing in high-efficiency power solutions, signal integrity components, and protection devices for industrial, computing, and automotive markets.
B140HB-13-F belongs to Diodes' Schottky rectifier product line, engineered for low-loss, high-reliability power conversion in space-constrained surface-mount applications where thermal performance and transient robustness are essential.
FAQ
What is the maximum continuous forward current rating for B140HB-13-F at 115°C terminal temperature?
The datasheet specifies 1.0 A average rectified output current (IO) at TT = 115°C. This rating assumes mounting on a PCB with 5.0 mm² copper pads acting as heatsink. At higher terminal temperatures, current must be linearly derated per Figure 4, reaching zero at 150°C.
Does B140HB-13-F have a specified reverse recovery time (trr)?
No-B140HB-13-F is a Schottky barrier rectifier and exhibits no minority carrier storage; therefore, it has effectively zero reverse recovery time. This eliminates switching losses and associated ringing in high-frequency DC/DC converters, unlike PN-junction rectifiers.
Can B140HB-13-F be used in place of a standard silicon diode in a 12 V automotive circuit?
Yes, provided the peak reverse voltage does not exceed 40 V and surge events remain within the 45 A (8.3 ms) rating. Its lower VF reduces heat generation, but its higher leakage at temperature requires verification in battery-disconnect or always-on circuits.
Is the SMB package of B140HB-13-F compatible with IPC-7351B standard footprints?
Yes-the SMB outline matches IPC-7351B DO-214AA (SMB) land pattern. Recommended pad dimensions are 2.3 mm × 4.3 mm (X × C per datasheet), with 0.8 mm solder mask opening and 0.25 mm paste stencil aperture for optimal reflow yield and mechanical reliability.
B140HB-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 530 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 40 V
- Capacitance @ Vr, F:
- 80pF @ 5V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
- Operating Temperature - Junction:
- -55°C ~ 150°C
B140HB-13-F FAQ
1.How can I place an order for B140HB-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for B140HB-13-F 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 B140HB-13-F reliable?
The price and inventory of B140HB-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B140HB-13-F is usually 5 days.
3.What payment methods are accepted for B140HB-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B140HB-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B140HB-13-F?
B140HB-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B140HB-13-F 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 B140HB-13-F?
For technical support, including B140HB-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B140HB-13-F requirements.
6.How does Aetrix verify that B140HB-13-F is sourced from the original manufacturer or authorized distributors?
All B140HB-13-F 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 B140HB-13-F meets industry standards.
7.What is the process for return or replacement of B140HB-13-F?
All B140HB-13-F units undergo pre-shipment inspection (PSI). If there is an issue with B140HB-13-F, 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 B140HB-13-F part is unused and in its original packaging.
Return procedure for B140HB-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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