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Diodes Incorporated BAS70W-04-7
- Part No.:
- BAS70W-04-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- SC-70, SOT-323
- Datasheet:
-
BAS70W-04-7.pdf
- Description:
- DIODE ARR SCHOTT 70V 70MA SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:5,504
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Product details
Overview
BAS70W-04-7 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 turn-on voltage (max 1000 mV at 15 mA), ultra-low junction capacitance (2.0 pF at 0 V), and PN junction guard ring for ESD/transient protection-used in high-speed signal clamping and RF detector circuits.
For engineers reviewing the BAS70W-04-7 datasheet, BAS70W-04-7 pinout, BAS70W-04-7 application, or BAS70W-04-7 equivalent, key selection criteria include reverse recovery speed, low forward voltage at low current, junction capacitance under bias, thermal resistance (625 °C/W), and SOT323 footprint compatibility with space-constrained PCB layouts.
Technical Context
This Schottky diode uses a platinum-silicide (PtSi) or similar low-barrier metal-semiconductor junction to achieve fast switching and low VF. Its guard-ringed die structure suppresses edge leakage and improves ruggedness against electrostatic discharge and voltage transients.
The device operates across –55 °C to +125 °C and is characterized with pulsed test conditions (tp < 300 µs) to minimize self-heating effects-ensuring stable VF and IR measurements at IF = 1.0 mA and VR = 50 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 70 V - maximum allowable repetitive reverse voltage before breakdown; defines safe operating range in clamp or protection circuits |
| VF @ IF = 15 mA | 1000 mV max - low forward drop enables efficient signal rectification in battery-powered RF detectors |
| trr | 5.0 ns - ultra-fast recovery supports >100 MHz signal switching in sampling and mixer applications |
| CT @ VR = 0 V | 2.0 pF - minimal junction capacitance preserves high-frequency signal integrity in antenna front-ends |
| RθJA | 625 °C/W - thermal resistance measured on standard FR-4 board; requires careful layout for >50 mW continuous dissipation |
| IR @ VR = 50 V | 100 nA max - low leakage maintains accuracy in precision DC restoration and sample-hold circuits |
Pinout & Package
Package: SOT323 - ultra-small plastic surface-mount package (2.00 × 2.225 × 0.90 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 | Connected to lower-potential node in clamping or rectification path; marked by cathode band on package top view |
| Cathode (Pin 2) | Forward current exit / reverse blocking terminal | Connected to higher-potential rail or signal line; functions as voltage reference point in detector circuits |
| Collector/Case (Pin 3) | Thermal and mechanical tie | Exposed leadframe paddle (not electrically isolated); provides primary thermal path to PCB copper; not connected internally |
Key Features
| Feature | Design Value |
|---|---|
| Low VF at low IF | 410 mV typ at 1.0 mA - enables accurate signal detection in low-power sensor interfaces without external biasing |
| Guard-ringed junction | Integrated PN guard ring - suppresses edge breakdown and improves ESD robustness to >8 kV HBM per AEC-Q200 Class 3A |
| Ultra-low CT | 2.0 pF at 0 V - minimizes loading on RF signal paths up to 2.4 GHz ISM band |
| SOT323 footprint | Standard 3-pin SC-70 outline - compatible with automated placement and reflow processes; reduces board area vs. SOT23 by ~40% |
Applications
| RF Signal Detector | High-Speed Logic Clamp |
|---|---|
Use Scenario: Demodulating low-amplitude RF signals (e.g., 915 MHz ISM band) in wireless sensor nodes. IC Role / Device Role / Timing Role: Schottky detector diode converting RF envelope to DC baseband voltage. Use Value: 5.0 ns trr and 2.0 pF CT preserve signal fidelity; 410 mV VF ensures sensitivity down to –20 dBm input. | Use Scenario: Preventing overshoot/undershoot on 50 MHz digital control lines driving optocouplers. IC Role / Device Role / Timing Role: Bidirectional clamping diode limiting voltage excursions to ±0.4 V beyond rail. Use Value: Low VF and fast trr limit transient duration to <10 ns, preventing false triggering in timing-critical logic. |
| Low-Power Sensor Interface | ESD-Protected Data Line |
Use Scenario: Rectifying thermopile output (µV–mV range) in battery-operated HVAC occupancy sensors. IC Role / Device Role / Timing Role: Precision zero-bias rectifier in instrumentation amplifier front-end. Use Value: 100 nA IR at 50 V ensures minimal offset error; guard ring prevents leakage-induced drift during ESD events. | Use Scenario: Protecting I²C SDA/SCL lines in industrial IoT gateways exposed to 4 kV contact discharge. IC Role / Device Role / Timing Role: Low-capacitance transient voltage clamp shunting ESD current to ground. Use Value: 2.0 pF CT avoids signal degradation at 400 kHz bus speeds; guard ring sustains clamping performance over 10⁵ ESD cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky barrier diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NSVRB70MUT5G | Same SOT323 package; 70 V VRRM; 1.0 V VF max @ 15 mA; 3.0 pF CT; no guard ring | Lower capacitance but reduced ESD robustness; unsuitable for unshielded industrial I/O | Select when minimizing CT is critical and system-level ESD protection is provided externally |
| BAT54C-7-F | Dual common-cathode configuration in SOT23; 30 V VRRM; 1.0 V VF max @ 10 mA; 10 pF CT | Higher capacitance limits RF use; dual topology saves space in dual-rail clamp designs | Choose for cost-sensitive dual-clamp applications where 30 V rating suffices and board area allows SOT23 |
Compared with NSVRB70MUT5G and BAT54C-7-F, BAS70W-04-7 uniquely balances 70 V rating, 5 ns trr, 2.0 pF CT, and integrated guard ring-making it optimal for compact, high-frequency, ESD-prone signal-path protection where single-diode topology is required.
Availability
BAS70W-04-7 is available at Aetrix Electronics and suitable for RF detector modules, high-speed logic interface protection, and low-power sensor signal conditioning requiring stable component supply across automotive, industrial, and consumer design cycles.
Supply support for BAS70W-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The BAS70W series belongs to Diodes' high-speed Schottky diode product line, engineered specifically for RF detection, signal clamping, and low-leakage protection in space-constrained, high-frequency applications.
FAQ
What is the cathode marking convention for BAS70W-04-7?
The cathode is marked by a band on the top surface of the SOT323 package, aligned with Pin 2. Pin 1 (anode) is located at the opposite end of the same edge. The marking code "K74" appears adjacent to the cathode band per Diodes' datasheet DS30113 Rev. 14–2.
Is BAS70W-04-7 qualified for automotive applications?
No-BAS70W-04-7 is not AEC-Q200 qualified. Diodes offers the automotive-grade variant BAS70WQ-04Q-7-F, which undergoes additional stress testing and is specified for –40 °C to +125 °C operation with enhanced ESD robustness and lot traceability.
Can BAS70W-04-7 replace BAS70W-05 or BAS70W-06 in a design?
Yes, mechanically and electrically interchangeable in SOT323 footprint, but with functional differences: BAS70W-05 has tighter VF distribution (410–800 mV), while BAS70W-06 specifies lower IR (≤50 nA). Substitution requires verification of VF/IR requirements in the target circuit.
What is the recommended pad layout for reliable reflow soldering?
Use Diodes' suggested SOT323 pad layout: 0.470 mm × 0.600 mm pads (X × Y), 1.300 mm center-to-center spacing (G), and 2.500 mm overall length (Y1). This layout ensures coplanarity, minimizes tombstoning, and maintains thermal performance per JEDEC J-STD-020 Level 1 requirements.
BAS70W-04-7 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 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:
- 150°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BAS70W-04-7 FAQ
1.How can I place an order for BAS70W-04-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS70W-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 BAS70W-04-7 reliable?
The price and inventory of BAS70W-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 BAS70W-04-7 is usually 5 days.
3.What payment methods are accepted for BAS70W-04-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS70W-04-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS70W-04-7?
BAS70W-04-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS70W-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 BAS70W-04-7?
For technical support, including BAS70W-04-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS70W-04-7 requirements.
6.How does Aetrix verify that BAS70W-04-7 is sourced from the original manufacturer or authorized distributors?
All BAS70W-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 BAS70W-04-7 meets industry standards.
7.What is the process for return or replacement of BAS70W-04-7?
All BAS70W-04-7 units undergo pre-shipment inspection (PSI). If there is an issue with BAS70W-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 BAS70W-04-7 part is unused and in its original packaging.
Return procedure for BAS70W-04-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAS70W-04-7 Tags
-
BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
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BAV99,215
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BAT54SLT1G
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BAV70LT1G
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BAT54S-7-F
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BAV99LT1G
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BAT54S,215
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