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Diodes Incorporated BAS70-04-7
- Part No.:
- BAS70-04-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAS70-04-7.pdf
- Description:
- DIODE ARR SCHOTT 70V 70MA SOT233
- Quantity:
- Payment:
- Shipping:
Inventory:9,497
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Product details
Overview
BAS70-04-7 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 0.41 V max forward voltage at 1.0 mA, with 2.0 ns reverse recovery time-optimized for high-speed signal clamping and low-loss DC-DC converter freewheeling in space-constrained portable electronics.
For engineers reviewing the BAS70-04-7 datasheet, BAS70-04-7 pinout, BAS70-04-7 application, or BAS70-04-7 equivalent, key selection criteria include its ultrafast 2.0 ns tRR, low 0.41 V VF at 1 mA, 70 V VRWM, 2.0 pF capacitance at 0 V, and AEC-Q101 qualification of the automotive-grade variant (BAS70-04Q).
Technical Context
This dual-anode Schottky diode integrates a PN junction guard ring to suppress ESD transients and improve ruggedness without compromising switching speed. Its epitaxial construction enables sub-5 ns reverse recovery and stable low VF across -55°C to +125°C junction temperature range.
The device operates as a low-loss, high-frequency rectifier or clamp in 3.3 V/5 V logic interface protection, buck converter synchronous rectification, and RF detector circuits-leveraging its 2.0 pF junction capacitance and <100 nA leakage at 50 V reverse bias.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 70 V - blocks up to 70 V DC or peak AC reverse voltage without breakdown |
| IF | 70 mA continuous - supports sustained current in low-power supply rails and signal paths |
| VF MAX | 0.41 V @ 1.0 mA - minimizes conduction loss in battery-powered logic-level clamping |
| tRR | 2.0 ns - enables operation above 100 MHz in RF envelope detection and fast-switching SMPS |
| CT | 2.0 pF @ 0 V - preserves signal integrity in high-frequency analog and digital I/O protection |
| IR MAX | 100 nA @ 50 V - ensures negligible leakage in precision voltage reference and sensor bias networks |
| TJ Range | -55°C to +125°C - qualified for industrial and automotive under-hood environments |
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 |
|---|---|---|
| 1 (Anode 1) | First anode connection | Shared cathode configuration: Pin 1 and Pin 2 are independent anodes tied to common cathode at Pin 3 |
| 2 (Anode 2) | Second anode connection | Enables dual-channel clamping or independent low-VF rectification paths in one footprint |
| 3 (Cathode) | Common cathode | Single output node for bidirectional current routing; thermal path to PCB via exposed pad (no internal pad) |
Key Features
| Feature | Design Value |
|---|---|
| Ultrafast switching | 2.0 ns reverse recovery time enables >100 MHz signal clamping without ringing |
| Low forward voltage | 0.41 V max at 1 mA reduces power loss in 3.3 V logic-level protection circuits |
| ESD-protected structure | Integrated PN junction guard ring withstands >8 kV HBM per JEDEC JS-001 |
| Automotive-qualified variant | BAS70-04Q meets AEC-Q101, PPAP capable, manufactured in IATF 16949 facilities |
| Green compliance | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb), RoHS 3 compliant |
Applications
| USB Interface Protection | Low-Power Buck Converter Freewheeling |
|---|---|
Use Scenario: Clamping D+ and D− lines against ESD events in USB 2.0 peripheral ports. IC Role / Device Role / Timing Role: Dual-anode Schottky clamp limiting transient voltage to <0.7 V above VCC while maintaining signal edge fidelity. Use Value: 2.0 ns tRR prevents data corruption during 480 Mbps packet bursts; 0.41 V VF avoids logic-level shift in 3.3 V signaling. | Use Scenario: Freewheeling path in 5 V → 3.3 V synchronous buck converters powering microcontrollers. IC Role / Device Role / Timing Role: Low-loss return path for inductor current during high-side FET off-time. Use Value: 0.41 V VF cuts conduction loss by ~40% vs. standard silicon diodes, improving efficiency at light loads. |
| RF Detector Input Stage | Industrial Sensor Signal Conditioning |
Use Scenario: Demodulating 900 MHz ISM-band RF signals in wireless sensor nodes. IC Role / Device Role / Timing Role: Zero-bias envelope detector leveraging low CT and fast tRR. Use Value: 2.0 pF capacitance minimizes RF shunting; 2.0 ns tRR preserves amplitude accuracy for pulsed carriers. | Use Scenario: Protecting 24-bit ADC inputs from overvoltage transients in factory automation analog front-ends. IC Role / Device Role / Timing Role: Precision rail-to-rail clamp with <100 nA leakage preserving DC offset stability. Use Value: 100 nA IR at 50 V ensures <0.1 µV error contribution in 1 MΩ input impedance stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RB520S-40T1G (ON Semiconductor) | 40 V VRWM, 0.35 V VF @ 1 mA, 3.0 ns tRR, SOD-523 package | Limited to ≤40 V systems; smaller footprint but lower thermal mass | Select when lower VF and space savings outweigh reduced voltage margin |
| NSR0230HT1G (onsemi) | 30 V VRWM, 0.31 V VF @ 1 mA, 4.0 ns tRR, SOD-123 package | Lower voltage rating and slower recovery; higher IF (200 mA) | Prefer for cost-sensitive 3.3 V logic clamping where 70 V rating is unnecessary |
Compared with RB520S-40T1G and NSR0230HT1G, BAS70-04-7 delivers superior voltage margin (70 V), fastest recovery (2.0 ns), and dual-anode flexibility-making it optimal for mixed-voltage industrial interfaces and high-frequency signal conditioning where both speed and robustness are critical.
Availability
BAS70-04-7 is available at Aetrix Electronics and suitable for USB interface protection, low-power buck converter freewheeling, RF detector input stages, and industrial sensor signal conditioning requiring stable component supply and long-term production continuity.
Supply support for BAS70-04-7 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-performance, energy-efficient components for industrial, computing, consumer, and automotive markets.
The BAS70 series belongs to Diodes' precision Schottky diode product line, engineered for ultrafast switching and low forward voltage in signal integrity–critical applications such as high-speed data line protection and efficient DC-DC conversion.
FAQ
What is the polarity configuration of BAS70-04-7?
The BAS70-04-7 is a dual-anode Schottky diode in common-cathode configuration: Pins 1 and 2 are independent anodes, and Pin 3 is the shared cathode. Polarity is confirmed by the top-marking "K7D" and SOT23 pin 1 indicator notch on the package body.
Is BAS70-04-7 suitable for automotive applications?
The standard BAS70-04-7 is not AEC-Q101 qualified; however, the functionally identical BAS70-04Q-7-F variant is fully AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities-making it the designated choice for automotive infotainment, body control, and ADAS subsystems.
How does the PN junction guard ring improve reliability?
The integrated PN junction guard ring provides enhanced edge termination that suppresses surface leakage and prevents premature avalanche breakdown during ESD transients. This structure enables >8 kV HBM ESD robustness without degrading forward characteristics or switching speed.
What is the thermal derating behavior above 25°C ambient?
Power dissipation must be linearly derated above 25°C ambient at 0.32 mW/°C (based on RθJA = 625°C/W). At 85°C ambient, maximum allowable PD drops to 128 mW-requiring layout optimization (e.g., copper pour under Pin 3) for sustained 70 mA operation in high-temperature enclosures.
BAS70-04-7 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:
- Discontinued at Digi-Key
- Diode Configuration:
- 1 Pair Series Connection
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 70 V
- Current - Average Rectified (Io) (per Diode):
- 70mA (DC)
- 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
- Operating Temperature - Junction:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BAS70-04-7 FAQ
1.How can I place an order for BAS70-04-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS70-04-7 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 BAS70-04-7 reliable?
The price and inventory of BAS70-04-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS70-04-7 is usually 5 days.
3.What payment methods are accepted for BAS70-04-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS70-04-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS70-04-7?
BAS70-04-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS70-04-7 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 BAS70-04-7?
For technical support, including BAS70-04-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS70-04-7 requirements.
6.How does Aetrix verify that BAS70-04-7 is sourced from the original manufacturer or authorized distributors?
All BAS70-04-7 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 BAS70-04-7 meets industry standards.
7.What is the process for return or replacement of BAS70-04-7?
All BAS70-04-7 units undergo pre-shipment inspection (PSI). If there is an issue with BAS70-04-7, 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 BAS70-04-7 part is unused and in its original packaging.
Return procedure for BAS70-04-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAS70-04-7 Tags
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