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Diodes Incorporated B170-13-F
- Part No.:
- B170-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
B170-13-F.pdf
- Description:
- DIODE SCHOTTKY 70V 1A SMA
- Quantity:
- Payment:
- Shipping:
Inventory:14,759
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Product details
Overview
B170-13-F from Diodes Incorporated is a 70 V peak repetitive reverse voltage, 1.0 A average forward current Schottky barrier rectifier in SMA package, with maximum 0.79 V forward voltage at 1.0 A and 0.5 mA reverse leakage at rated VR and +25°C, used for polarity protection and DC-DC freewheeling in compact power supplies.
For engineers reviewing the B170-13-F datasheet, B170-13-F pinout, B170-13-F application, or B170-13-F equivalent, key selection criteria include low VF for efficiency-critical 1A switching paths, 70V blocking capability for 48V bus clamping, thermal resistance (25°C/W), RoHS/Green compliance, and SMA package suitability for high-density automated assembly.
Technical Context
This Schottky rectifier uses guard ring die construction to suppress transient-induced avalanche breakdown, enabling robust operation in inductive load commutation and reverse-polarity fault conditions. Its low junction-to-terminal thermal resistance (25°C/W) supports sustained 1.0 A conduction at +125°C terminal temperature.
The device exhibits 80 pF total capacitance at 4 V reverse bias and 1 MHz, minimizing high-frequency switching losses in DC-DC converters. Reverse leakage remains ≤0.5 mA at 70 V and +25°C, ensuring minimal standby power loss in blocking applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 70 V - Maximum repetitive reverse voltage before breakdown; sets upper limit for DC bus clamping or AC input rectification. |
| IO (AV) | 1.0 A - Continuous average forward current rating at +125°C terminal temperature; defines steady-state power handling capacity. |
| VF (max) | 0.79 V @ 1.0 A, +25°C - Forward voltage drop determines conduction loss (0.79 W at 1A); lower than silicon diodes for improved efficiency. |
| IR (max) | 0.5 mA @ 70 V, +25°C - Reverse leakage current impacts standby power and signal integrity in high-impedance blocking circuits. |
| RθJT | 25 °C/W - Junction-to-terminal thermal resistance; enables thermal design using PCB copper as heatsink without external heatsink. |
| CT | 80 pF @ 4 V, 1 MHz - Junction capacitance affects high-frequency switching noise and EMI in SMPS freewheeling paths. |
Pinout & Package
Package: SMA (Surface Mount Axial), molded plastic body with matte tin-plated terminals, cathode band marking, UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., ground or switch node) in freewheeling path; must handle 30 A non-repetitive surge. |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; connected to higher-potential rail (e.g., input bus); sustains 70 V reverse bias with ≤0.5 mA leakage. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Suppresses edge avalanche during voltage transients, enabling reliable operation in automotive load-dump and industrial inductive switching environments. |
| Low VF (0.79 V max) | Reduces conduction loss by ~40% vs. comparable silicon rectifiers, directly improving efficiency in 1A DC-DC output stages. |
| Lead-free & Halogen-free | Meets RoHS 3 (2015/863/EU) and JEDEC AEC-Q reliability standards; eliminates bromine/chlorine/antimony compounds per Diodes' "Green" definition. |
| SMA package | Enables high-density placement on 1.6 mm PCBs; compatible with standard reflow profiles including 260°C/10s soldering at terminals. |
Applications
| Polarity Protection | DC-DC Freewheeling |
|---|---|
Use Scenario: Input protection for USB-powered IoT sensors operating from unregulated 5–12 V adapters where reverse connection must be blocked without significant voltage drop. IC Role / Device Role / Timing Role: Series-blocking Schottky diode placed between input connector and LDO/regulator input. Use Value: 0.79 V VF ensures ≥4.2 V delivered to downstream circuitry at 1A, preserving headroom for low-dropout regulation. | Use Scenario: Output rectification in 5 V/1 A synchronous buck converter for industrial PLC I/O modules requiring high efficiency at light loads. IC Role / Device Role / Timing Role: Freewheeling path for inductor current during high-side FET off-time. Use Value: 80 pF capacitance minimizes ringing and EMI during fast current reversal, reducing need for snubbers. |
| AC-DC Output Rectification | Re-circulating Diode |
Use Scenario: Secondary-side rectification in compact 12 V/1 A offline flyback adapter for smart home gateways. IC Role / Device Role / Timing Role: Unidirectional current path converting transformer secondary AC to DC output. Use Value: 70 V VRRM safely withstands reflected primary spikes up to 60 V while maintaining low conduction loss. | Use Scenario: Inductive load suppression for 24 V solenoid drivers in HVAC control panels. IC Role / Device Role / Timing Role: Clamp path for back-EMF energy when driver FET turns off. Use Value: 30 A IFSM rating handles 20 ms inductive turn-off surges without degradation, extending system lifetime. |
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) | 70 V VRRM, 1.0 A IO, 0.5 V VF typ @ 1A - lower typical VF but higher IR (1.0 mA max). | Preferred where ultra-low conduction loss dominates over leakage-sensitive battery backup circuits. | Select SS14 only if measured VF < 0.7 V at operating current and ambient temperature is controlled ≤60°C. |
| B180-13-F | 80 V VRRM, identical IO/VF/IR specs - higher blocking voltage with no trade-off in forward performance. | Required for 48 V nominal systems subject to 60+ V transients where 70 V margin is insufficient. | Choose B180-13-F when system-level surge testing exceeds 70 V or DC bus can reach 75 V during regeneration. |
Compared with B170-13-F, SS14 offers lower typical forward drop but higher leakage, making it less suitable for always-on battery-powered nodes; B180-13-F provides direct 10 V headroom increase for 48 V systems without altering thermal or layout design.
Availability
B170-13-F is available at Aetrix Electronics and suitable for polarity protection, DC-DC freewheeling, AC-DC output rectification, and re-circulating diode applications requiring stable component supply and RoHS-compliant manufacturing.
Supply support for B170-13-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The B170/B series belongs to Diodes' high-reliability Schottky rectifier product line, engineered for efficiency-critical power conversion in industrial, computing, and consumer power supplies where low VF and robust transient immunity are mandatory.
FAQ
What is the maximum junction temperature for B170-13-F?
The absolute maximum junction temperature is +150°C, with continuous operation limited to +125°C terminal temperature per the derating curve. At 1.0 A DC, the junction rises 25°C above terminal temperature due to RθJT = 25°C/W, requiring PCB thermal design to maintain terminal temperature ≤+125°C.
Is B170-13-F suitable for automotive applications?
B170-13-F is not AEC-Q200 qualified; Diodes offers the B170Q variant for automotive use. The standard B170-13-F meets JEDEC reliability standards but lacks the extended temperature screening, failure rate validation, and qualification test reports required for under-hood automotive deployment.
Can B170-13-F replace a 1N5819 in existing designs?
Yes - B170-13-F shares SMA package, 1.0 A rating, and 70 V VRRM with 1N5819, but offers lower VF (0.79 V vs. 0.9 V max) and tighter IR spec (0.5 mA vs. 1.0 mA). Layout and solder profile remain identical; verify thermal margin given improved efficiency reduces self-heating.
What is the meaning of "-13-F" in the part number?
"-13-F" denotes Diodes' standard tape-and-reel packaging: "13" indicates 8 mm carrier tape width, "F" signifies lead-free (RoHS-compliant) matte tin plating. The full ordering code B170-13-F specifies SMA package, 5,000 units per reel, and green compliance.
B170-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 70 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 790 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 70 V
- Capacitance @ Vr, F:
- 80pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA
- Operating Temperature - Junction:
- -65°C ~ 150°C
B170-13-F FAQ
1.How can I place an order for B170-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for B170-13-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 B170-13-F reliable?
The price and inventory of B170-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B170-13-F is usually 5 days.
3.What payment methods are accepted for B170-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B170-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B170-13-F?
B170-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B170-13-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 B170-13-F?
For technical support, including B170-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B170-13-F requirements.
6.How does Aetrix verify that B170-13-F is sourced from the original manufacturer or authorized distributors?
All B170-13-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 B170-13-F meets industry standards.
7.What is the process for return or replacement of B170-13-F?
All B170-13-F units undergo pre-shipment inspection (PSI). If there is an issue with B170-13-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 B170-13-F part is unused and in its original packaging.
Return procedure for B170-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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