My Inquiry
My Account
Diodes Incorporated B370-13-F
- Part No.:
- B370-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
B370-13-F.pdf
- Description:
- DIODE SCHOTTKY 70V 3A SMC
- Quantity:
- Payment:
- Shipping:
Inventory:995
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
B370-13-F from Diodes Incorporated is a 3.0A, 70V peak repetitive reverse voltage Schottky barrier rectifier in SMC package, featuring low forward voltage drop (0.79 V at 3.0A, 25°C), 100A non-repetitive surge rating, and guard ring die construction for transient protection. It is used in low-voltage, high-frequency inverters, freewheeling diode circuits, and polarity protection in DC power supplies.
For engineers reviewing the B370-13-F datasheet, B370-13-F pinout, B370-13-F application, or B370-13-F equivalent, key selection criteria include forward voltage at rated current, thermal resistance (10°C/W junction-to-terminal), reverse leakage at 100°C (20 mA), surge capability (100A), and RoHS-compliant lead-free plating.
Technical Context
This Schottky rectifier employs a guard ring die structure to enhance transient voltage immunity and suppress avalanche-induced failure. Its low VF enables high-efficiency operation in 12V–48V DC-DC secondary-side rectification and switching-mode power supply freewheel paths.
Designed for high-frequency operation up to several hundred kHz, it exhibits low junction capacitance (100 pF at 4V) and fast recovery with no minority-carrier storage delay. Thermal performance is optimized for surface-mount PCB layouts with copper pour on the cathode pad to manage 3.0A continuous current at 90°C terminal temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 70 V - Maximum peak repetitive reverse voltage; defines safe blocking range in 48V bus polarity protection |
| IO @ TT=90°C | 3.0 A - Continuous average forward current with terminal temperature limited to 90°C; requires ≥1 cm² copper pour for thermal management |
| VF @ 3.0A, 25°C | 0.79 V - Forward voltage drop determining conduction loss; yields ~2.4W dissipation at full load |
| IFSM (8.3ms) | 100 A - Non-repetitive surge rating; supports motor startup or capacitor-charging transients without failure |
| RθJT | 10 °C/W - Junction-to-terminal thermal resistance; enables direct thermal coupling to PCB ground plane for heat extraction |
| IR @ VR, 100°C | 20 mA - Reverse leakage at max operating temperature; impacts standby power in always-on systems |
| CT @ 4V, 1MHz | 100 pF - Junction capacitance limiting high-frequency switching noise and EMI in SMPS output stages |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic case with UL 94V-0 flammability rating, cathode indicated by band or notch. Terminal plating: matte tin, lead-free, RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to input/switching node; must handle full load current and surge transients |
| Cathode | Forward current exit / reverse voltage reference | Larger metalized pad for thermal conduction; serves as primary PCB heat sink path |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Enhances ESD and transient immunity without external TVS; eliminates need for discrete clamping in cost-sensitive designs |
| Low VF (0.79 V @ 3A) | Reduces conduction loss by >30% vs. standard PN rectifiers; improves efficiency in 12V/24V DC-DC converters |
| 100A surge rating | Withstands inrush currents in battery-powered tools and UPS systems without derating or parallel devices |
| RoHS-compliant matte tin plating | Ensures reliable solder wetting and intermetallic formation per MIL-STD-202 Method 208 |
| Green molding compound | Halogen- and antimony-free encapsulation meeting IEC 61249-2-21 for environmentally regulated end equipment |
Applications
| DC-DC Converter Secondary Rectification | Automotive Body Control Module Power Input |
|---|---|
Use Scenario: High-frequency synchronous buck converter output stage delivering 3.3V/5V/12V to microcontrollers and sensors. IC Role / Device Role / Timing Role: Freewheeling diode providing low-loss return path during high-side switch off-time. Use Value: 0.79V VF minimizes power loss at 3A load, enabling compact thermal design without heatsink. | Use Scenario: Reverse polarity protection at 12V battery input of BCM controlling door locks, lighting, and HVAC. IC Role / Device Role / Timing Role: Series-connected Schottky blocking diode preventing damage from accidental battery reversal. Use Value: 70V VRRM exceeds automotive load-dump spikes (up to 60V), while 100A IFSM handles jump-start surges. |
| Industrial AC-DC Adapter Output | Telecom PoE Midspan Power Clamp |
Use Scenario: Low-voltage output rectification in universal-input 24V/48V AC-DC adapters for industrial PLC I/O modules. IC Role / Device Role / Timing Role: Output rectifier handling continuous 3A load with minimal voltage drop under varying line conditions. Use Value: 10°C/W RθJT allows direct thermal transfer to chassis ground via cathode pad, eliminating thermal vias. | Use Scenario: Polarity correction and overvoltage clamp in IEEE 802.3af/at midspan PSE units supplying 48V to remote IP cameras. IC Role / Device Role / Timing Role: Bidirectional protection element absorbing reverse-energy transients during cable hot-plug events. Use Value: Guard ring die withstands repeated 100V+ transients without parameter shift, extending field life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS37-E3/57T (Vishay) | Same 70V VRRM, 3A IO, but VF = 0.85V @ 3A (25°C); RθJT = 12°C/W | Slightly higher conduction loss and thermal resistance; less efficient in thermally constrained layouts | Select if Vishay qualification or existing supply chain alignment is required |
| SB370-E3/57T (Vishay) | Identical electrical specs (70V/3A/0.79V), same SMC package, but green compound not specified | No halogen-free assurance; may not meet strict environmental compliance for EU medical or telecom gear | Select when RoHS compliance suffices but halogen-free is not mandated |
Compared with SS37-E3/57T and SB370-E3/57T, B370-13-F offers lower VF and superior thermal resistance, while uniquely guaranteeing halogen- and antimony-free packaging-critical for export-controlled or eco-certified industrial systems.
Availability
B370-13-F is available at Aetrix Electronics and suitable for DC-DC converter secondary rectification, automotive body control module power input, and industrial AC-DC adapter output requiring stable component supply across multi-year production cycles.
Supply support for B370-13-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-reliability power management and signal integrity solutions for industrial, computing, and consumer markets.
The B370-13-F belongs to Diodes' high-current Schottky rectifier product line, engineered for efficiency-critical, high-surge environments including automotive subsystems and industrial power supplies.
FAQ
What is the maximum continuous forward current rating for B370-13-F at 100°C ambient?
The B370-13-F is rated for 3.0A average forward current at terminal temperature (TT) of 90°C-not ambient. At 100°C ambient, derating applies: Fig. 3 shows ~2.4A usable current with adequate PCB copper area. Actual current depends on thermal layout, not ambient alone.
Does B370-13-F have a specified reverse recovery time (trr)?
No-B370-13-F is a Schottky barrier rectifier and has no minority carrier storage; therefore, trr is not defined or measured. Its switching is inherently instantaneous, making it suitable for frequencies beyond 500 kHz without recovery-related losses or ringing.
Can B370-13-F be used in place of a PN junction rectifier like 1N5408?
Yes, but only where reverse voltage ≤70V and low VF is beneficial. Unlike 1N5408 (1000V, 3A, VF ≈1.1V), B370-13-F offers lower loss and faster switching but cannot block >70V. It is unsuitable for line-voltage AC rectification.
Is the SMC package of B370-13-F compatible with standard reflow profiles for lead-free assembly?
Yes-the device uses matte tin plating qualified per MIL-STD-202 Method 208 and is rated for JEDEC J-STD-020 Level 1 moisture sensitivity. Standard Pb-free reflow profiles (peak 260°C, 10s max) are fully supported without preconditioning.
B370-13-F 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):
- 70 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 790 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 70 V
- Capacitance @ Vr, F:
- 100pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
- Operating Temperature - Junction:
- -55°C ~ 125°C
B370-13-F FAQ
1.How can I place an order for B370-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for B370-13-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 B370-13-F reliable?
The price and inventory of B370-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B370-13-F is usually 5 days.
3.What payment methods are accepted for B370-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B370-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B370-13-F?
B370-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B370-13-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 B370-13-F?
For technical support, including B370-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B370-13-F requirements.
6.How does Aetrix verify that B370-13-F is sourced from the original manufacturer or authorized distributors?
All B370-13-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 B370-13-F meets industry standards.
7.What is the process for return or replacement of B370-13-F?
All B370-13-F units undergo pre-shipment inspection (PSI). If there is an issue with B370-13-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 B370-13-F part is unused and in its original packaging.
Return procedure for B370-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
B370-13-F Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
