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Diodes Incorporated BAS70-7-F
- Part No.:
- BAS70-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAS70-7-F.pdf
- Description:
- DIODE SCHOTTKY 70V 70MA SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:20,422
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Product details
Overview
BAS70-7-F from Diodes Incorporated is a surface-mount Schottky barrier diode in SOT23 package, rated for 70 V peak reverse voltage, 70 mA forward current, and 410 mV max forward voltage at 1.0 mA. It features a PN junction guard ring for transient and ESD protection, and is optimized for low-loss signal clamping and high-speed switching in space-constrained DC-DC converter feedback paths.
For engineers reviewing the BAS70-7-F datasheet, BAS70-7-F pinout, BAS70-7-F application, or BAS70-7-F equivalent, key selection criteria include its 5.0 ns reverse recovery time, 2.0 pF junction capacitance at 0 V, 100 nA max reverse leakage at 50 V, and thermal resistance of 625 °C/W - all critical for high-frequency rectification and precision voltage clamping in portable power management circuits.
Technical Context
This Schottky diode uses a metal–semiconductor junction to achieve low forward voltage drop and fast carrier recombination, eliminating minority-carrier storage delay. Its guard ring structure enhances ruggedness against electrostatic discharge and voltage transients without compromising switching speed.
The device operates across –55 °C to +125 °C junction temperature, with power derating beginning above 25 °C ambient. Its 200 mW maximum power dissipation and SOT23 thermal profile support reliable operation on standard FR-4 PCBs with recommended pad layout per Diodes' package outline documentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR (V) | 70 V - Maximum repetitive reverse blocking voltage before breakdown; defines safe operating range in clamp or flyback circuits. |
| IF (mA) | 70 mA - Continuous forward current rating; sets usable load-current ceiling in low-power signal path applications. |
| VF MAX (V) | 0.41 V @ 1.0 mA - Low conduction loss enables efficient voltage translation and logic-level clamping with minimal IR drop. |
| tRR (ns) | 5.0 ns - Fast reverse recovery supports >100 MHz switching in RF detector and sampling circuits. |
| CT (pF) | 2.0 pF @ 0 V - Minimal junction capacitance preserves signal integrity in high-frequency AC coupling and RF mixing stages. |
| IR MAX (nA) | 100 nA @ 50 V - Ultra-low leakage ensures stable biasing in precision analog front-ends and sensor interface networks. |
| RθJA (°C/W) | 625 - Thermal resistance confirms need for conservative layout on FR-4; limits usable power in unheatsinked SOT23 designs. |
Pinout & Package
Package: SOT23 - 3-terminal plastic surface-mount package with 0.915 mm body width, 2.40 mm length, and 1.30 mm height; moisture sensitivity level 1 per J-STD-020; lead-free matte tin plating over Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry point | Connected to higher-potential node in clamping or rectification; polarity marked by cathode band on package top view. |
| Cathode (Pin 2) | Forward current exit / reverse blocking terminal | Typically tied to reference or ground; carries full reverse voltage during off-state; requires proper PCB clearance for 70 V isolation. |
| NC (Pin 3) | No connection | Internally unconnected; must remain floating - not used for thermal relief or grounding in standard layout. |
Key Features
| Feature | Design Value |
|---|---|
| Low turn-on voltage | 0.41 V max at 1 mA enables sub-logic-level clamping without disturbing TTL/CMOS thresholds. |
| Fast switching | 5.0 ns reverse recovery time supports clean edge transitions in pulse-width modulation and RF envelope detection. |
| PN junction guard ring | Integrated ESD protection structure withstands ≥2 kV HBM per JEDEC JS-001, reducing need for external TVS in I/O lines. |
| Green RoHS compliance | Halogen- and antimony-free molding compound (<900 ppm Br+Cl, <1000 ppm Sb) meets automotive and medical regulatory requirements. |
Applications
| USB Port Protection | DC-DC Converter Feedback |
|---|---|
Use Scenario: Clamping ESD transients on USB D+/D− lines during hot-plug events. IC Role / Device Role / Timing Role: Signal-line Schottky clamp diode providing bidirectional low-voltage clamping path to VBUS and GND. Use Value: 0.41 V VF and 100 nA IR ensure minimal signal distortion while diverting >2 kV HBM pulses away from PHY transceivers. | Use Scenario: Isolating feedback voltage divider from optocoupler input in isolated flyback converters. IC Role / Device Role / Timing Role: High-speed rectifier in optocoupler LED drive path to prevent reverse-bias damage and improve loop stability. Use Value: 5.0 ns tRR and 2.0 pF CT minimize phase lag and parasitic resonance in 100–500 kHz control loops. |
| RF Detector Circuit | Low-Power Microcontroller Reset |
Use Scenario: Demodulating AM signals in sub-GHz ISM-band receivers using passive envelope detection. IC Role / Device Role / Timing Role: Zero-bias Schottky detector diode converting RF envelope to baseband DC voltage. Use Value: 2.0 pF CT and 100 nA IR preserve detector sensitivity at 433/868 MHz while enabling nanosecond-scale response to amplitude changes. | Use Scenario: Debouncing and clamping reset line voltage during brown-out or power-up sequencing. IC Role / Device Role / Timing Role: Precision voltage clamp limiting reset pin excursion to safe logic levels during supply ramp. Use Value: 0.41 V VF ensures clamping occurs below 0.5 V threshold, preventing false resets in 1.8 V and 3.3 V MCU systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MBR0520L-TP (Micro Commercial) | 20 V VR, 500 mA IF, 0.33 V VF - higher current, lower voltage rating | Not suitable for 70 V blocking; better for 5 V rail clamping or synchronous rectification | Select only if system reverse voltage ≤20 V and forward current >70 mA required. |
| NSR0230HT1G (onsemi) | 30 V VR, 200 mA IF, 0.35 V VF - higher IF, lower VR, same SOT23 footprint | Lacks guard ring; lower ESD robustness; unsuitable for unshielded I/O protection | Prefer for cost-sensitive, non-ESD-critical 3.3 V logic clamping where 30 V blocking suffices. |
Compared with MBR0520L-TP and NSR0230HT1G, BAS70-7-F uniquely balances 70 V blocking, ultra-low leakage, and integrated ESD protection in SOT23 - making it optimal for mixed-signal interfaces where voltage margin, signal fidelity, and ruggedness are jointly constrained.
Availability
BAS70-7-F is available at Aetrix Electronics and suitable for USB port protection, DC-DC converter feedback networks, RF detector circuits, and low-power microcontroller reset conditioning requiring stable component supply and consistent parametric performance across production lots.
Supply support for BAS70-7-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 BAS70 series belongs to Diodes' general-purpose Schottky diode product line, engineered specifically for high-speed, low-VF signal routing and protection in portable, battery-powered, and space-constrained electronics.
FAQ
What is the maximum junction temperature for BAS70-7-F?
The specified operating junction temperature range is –55 °C to +125 °C. This rating is validated under conditions of 70 mA forward current and 200 mW power dissipation on FR-4 board with Diodes' recommended pad layout. Exceeding 125 °C risks permanent degradation of the Schottky barrier and increased reverse leakage.
Is BAS70-7-F pin-compatible with BAS70-04 or BAS70-05?
Yes - all BAS70 variants share identical SOT23 pinout (Anode–Cathode–NC) and mechanical dimensions. However, electrical differences exist: BAS70-04 has 2.0 ns tRR, BAS70-05 offers 0.55 V VF at 15 mA, and BAS70-7-F provides 5.0 ns tRR with 0.41 V VF at 1 mA. Pin compatibility does not imply functional interchangeability.
Does BAS70-7-F meet AEC-Q101 for automotive use?
No - only the BAS70-04Q variant is AEC-Q101 qualified and PPAP capable. BAS70-7-F is intended for commercial and industrial applications. Its construction lacks the additional process controls, test screening, and traceability required for automotive-grade qualification.
Can BAS70-7-F be used as a replacement for 1N5711 in RF detector applications?
Yes - both are Schottky diodes with comparable VF (~0.4 V), low CT (~2 pF), and fast tRR. BAS70-7-F offers tighter parameter distribution, SOT23 surface-mount compatibility, and integrated guard ring ESD protection versus through-hole 1N5711, improving manufacturability and reliability in modern RF modules.
BAS70-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 70 V
- Current - Average Rectified (Io):
- 70mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 15 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 5 ns
- Current - Reverse Leakage @ Vr:
- 100 nA @ 50 V
- Capacitance @ Vr, F:
- 2pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
- Operating Temperature - Junction:
- -55°C ~ 125°C
BAS70-7-F FAQ
1.How can I place an order for BAS70-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS70-7-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 BAS70-7-F reliable?
The price and inventory of BAS70-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS70-7-F is usually 5 days.
3.What payment methods are accepted for BAS70-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS70-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS70-7-F?
BAS70-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS70-7-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 BAS70-7-F?
For technical support, including BAS70-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS70-7-F requirements.
6.How does Aetrix verify that BAS70-7-F is sourced from the original manufacturer or authorized distributors?
All BAS70-7-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 BAS70-7-F meets industry standards.
7.What is the process for return or replacement of BAS70-7-F?
All BAS70-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BAS70-7-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 BAS70-7-F part is unused and in its original packaging.
Return procedure for BAS70-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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