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Diodes Incorporated BAS70W-05-7
- Part No.:
- BAS70W-05-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- SC-70, SOT-323
- Datasheet:
-
BAS70W-05-7.pdf
- Description:
- DIODE ARR SCHOTT 70V 70MA SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:2,924
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Product details
Overview
BAS70W-05-7 from Diodes Incorporated is a surface-mount Schottky barrier diode in SOT323 package, rated for 70 V peak repetitive reverse voltage, 70 mA forward current, and 5.0 ns reverse recovery time. It features low forward voltage (410 mV @ 1 mA), ultra-low capacitance (2.0 pF @ 0 V), and PN junction guard ring for ESD/transient protection-used in high-speed signal clamping and polarity protection circuits in portable power management.
For engineers reviewing the BAS70W-05-7 datasheet, BAS70W-05-7 pinout, BAS70W-05-7 application, or BAS70W-05-7 equivalent, key selection criteria include its 70 V blocking capability, sub-1 V forward drop at low current, 2.0 pF junction capacitance for RF-sensitive routing, and SOT323 footprint compatibility with space-constrained PCB layouts.
Technical Context
This Schottky diode uses a planar epitaxial construction with a PN guard ring to suppress edge breakdown and improve transient robustness. Its low trr (5.0 ns) and minimal CT (2.0 pF) enable use in 10–100 MHz signal path protection and high-frequency sampling clamp circuits.
The device operates across –55 °C to +125 °C and dissipates up to 200 mW on FR-4 PCBs with specified pad layout. Thermal resistance is 625 °C/W junction-to-ambient, limiting continuous IF to 70 mA at TA = 25 °C without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 70 V - supports DC blocking in 48 V and 36 V industrial bus lines without avalanche conduction |
| VF @ 1 mA | 410 mV - enables low-loss voltage clamping in battery-powered sensor signal chains |
| trr | 5.0 ns - suitable for <100 MHz digital signal integrity protection and fast-switching logic interfaces |
| CT @ 0 V | 2.0 pF - minimizes capacitive loading on RF detector inputs and high-Z analog nodes |
| IR @ 50 V | 100 nA - ensures negligible leakage in precision reference voltage monitoring paths |
| PD | 200 mW - defines maximum steady-state power handling on standard FR-4 with recommended pad layout |
Pinout & Package
Package: SOT323 - ultra-small plastic surface-mount package (2.0 × 2.225 × 0.9 mm), moisture sensitivity level 1, matte tin-plated leads, weight 0.006 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry point | Connected to lower-potential side in reverse polarity protection; requires low-inductance trace routing for fast switching |
| Cathode (Pin 2) | Forward current exit / reverse voltage reference | Tied to system ground or higher-potential rail; serves as clamping reference node in ESD protection networks |
| Collector/Case (Pin 3) | Thermal and electrical tie to substrate | Internally connected to cathode; must be soldered to thermal pad or ground plane for optimal RθJA performance |
Key Features
| Feature | Design Value |
|---|---|
| PN junction guard ring | Prevents premature edge breakdown under transient stress, improving reliability in unregulated input stages |
| Ultra-low junction capacitance | 2.0 pF at 0 V enables integration into 50 Ω RF front-end bias networks without impedance mismatch |
| Low forward voltage at microamp currents | 410 mV @ 1 mA reduces voltage offset in precision comparator reference clamps |
| SOT323 footprint | Compatible with automated placement for high-density portable electronics; no lead-free reflow compatibility issues |
Applications
| USB Port Polarity Protection | RF Detector Bias Clamping |
|---|---|
Use Scenario: Preventing damage from reversed USB cable insertion in portable chargers and OTG accessories. IC Role / Device Role / Timing Role: Unidirectional current steering diode placed in series with VBUS line to block reverse current flow. Use Value: 70 V VRRM withstands load dump transients; 410 mV VF minimizes insertion loss in 5 V power path. | Use Scenario: Clamping DC bias voltage at RF detector output to prevent op-amp saturation in spectrum analyzers. IC Role / Device Role / Timing Role: Fast-recovery Schottky clamp limiting detector output swing to ±0.4 V. Use Value: 5.0 ns trr ensures accurate envelope tracking up to 100 MHz; 2.0 pF CT avoids detuning 50 Ω RF traces. |
| Low-Power Sensor Signal Conditioning | ESD Protection for I²C Lines |
Use Scenario: Protecting ADC input of battery-operated environmental sensors from overvoltage during hot-swap events. IC Role / Device Role / Timing Role: Low-leakage (100 nA IR) clamp diode shunting excess voltage to rail. Use Value: Sub-1 µA leakage preserves nanoamp-level sensor bias currents; guard ring improves ESD immunity per IEC 61000-4-2 Level 4. | Use Scenario: Adding secondary ESD suppression on bidirectional I²C SDA/SCL lines in industrial controllers. IC Role / Device Role / Timing Role: Low-capacitance (2.0 pF) shunt diode between signal and ground to divert ESD pulses. Use Value: Minimal added capacitance prevents rise/fall time degradation on 400 kHz I²C buses; 70 V rating covers system-level surge margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBAT54LT1G | Higher VF (500 mV @ 10 mA); same SOT-23 package; 30 V VRRM | Limited to ≤24 V systems; unsuitable for 48 V bus clamping | Select when lower cost and 30 V rating suffice; avoid where 70 V margin is required |
| BAT54CW | Same SOT323 package; 30 V VRRM; 1000 mV VF @ 10 mA; 10 pF CT | Higher capacitance degrades RF performance; insufficient reverse voltage for industrial power rails | Acceptable only in low-frequency, low-voltage logic-level clamping where speed and capacitance are non-critical |
Compared with SBAT54LT1G and BAT54CW, BAS70W-05-7 delivers superior 70 V blocking, lower VF at microamp bias, and one-fifth the junction capacitance-making it uniquely suited for high-voltage, high-frequency, and ultra-low-power signal path protection.
Availability
BAS70W-05-7 is available at Aetrix Electronics and suitable for USB power delivery protection, RF detector bias clamping, and low-power sensor interface circuits requiring stable component supply and long-term obsolescence management.
Supply support for BAS70W-05-7 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, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.
The BAS70W series belongs to Diodes' high-speed Schottky diode product line, engineered specifically for compact, low-loss signal integrity and polarity protection in portable, industrial, and communications equipment.
FAQ
What is the maximum reverse voltage rating for BAS70W-05-7?
The BAS70W-05-7 has a peak repetitive reverse voltage (VRRM) rating of 70 V, verified per DS30113 Rev. 14–2. This allows safe operation in 48 V nominal systems with transient margin, and exceeds the 50 V test condition used for its 100 nA reverse leakage specification.
Does BAS70W-05-7 have integrated ESD protection?
Yes-it incorporates a PN junction guard ring structure that enhances transient immunity and provides inherent ESD robustness. While not rated to specific IEC 61000-4-2 levels in the datasheet, this feature demonstrably improves survivability against contact discharge events in real-world board-level implementations.
Can BAS70W-05-7 replace BAS70W-06-7 in a design?
Yes, with functional trade-offs: BAS70W-05-7 has 70 V VRRM and 410 mV VF @ 1 mA, while BAS70W-06-7 offers 60 V VRRM but lower 375 mV VF @ 1 mA. Substitution is acceptable if system reverse voltage stays below 60 V and lower forward drop is prioritized over margin.
Is BAS70W-05-7 suitable for automotive applications?
No-the standard BAS70W-05-7 is not AEC-Q200 qualified. Diodes offers the automotive-grade BAS70WQ-05Q variant (separate datasheet DS30113Q) with extended temperature screening, enhanced process controls, and PPAP documentation for automotive use.
BAS70W-05-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Diode Configuration:
- 1 Pair Common Cathode
- 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:
- 150°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BAS70W-05-7 FAQ
1.How can I place an order for BAS70W-05-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS70W-05-7 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 BAS70W-05-7 reliable?
The price and inventory of BAS70W-05-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS70W-05-7 is usually 5 days.
3.What payment methods are accepted for BAS70W-05-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS70W-05-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS70W-05-7?
BAS70W-05-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS70W-05-7 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 BAS70W-05-7?
For technical support, including BAS70W-05-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS70W-05-7 requirements.
6.How does Aetrix verify that BAS70W-05-7 is sourced from the original manufacturer or authorized distributors?
All BAS70W-05-7 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 BAS70W-05-7 meets industry standards.
7.What is the process for return or replacement of BAS70W-05-7?
All BAS70W-05-7 units undergo pre-shipment inspection (PSI). If there is an issue with BAS70W-05-7, 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 BAS70W-05-7 part is unused and in its original packaging.
Return procedure for BAS70W-05-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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