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Diodes Incorporated BAS70W-04-7-F
- Part No.:
- BAS70W-04-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- SC-70, SOT-323
- Datasheet:
-
BAS70W-04-7-F.pdf
- Description:
- DIODE ARR SCHOTT 70V 70MA SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:17,677
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Product details
Overview
BAS70W-04-7-F 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-small footprint, 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-04-7-F datasheet, BAS70W-04-7-F pinout, BAS70W-04-7-F application, or BAS70W-04-7-F equivalent, key selection criteria include reverse recovery speed, low VF at low IF, reverse leakage (<100 nA @ 50 V), total capacitance (2.0 pF @ 0 V), and thermal resistance (625 °C/W) in compact SOT323 layout.
Technical Context
This Schottky diode leverages a metal–semiconductor junction to achieve fast switching (trr ≤ 5.0 ns) and low forward voltage drop (VF ≤ 410 mV at 1 mA). Its guard-ringed PN structure enhances ruggedness against electrostatic discharge and transient overvoltage events without compromising switching speed.
Designed for operation from –55 °C to +125 °C, it delivers stable performance under thermal stress with 200 mW power dissipation on FR-4 PCB and 625 °C/W junction-to-ambient thermal resistance-enabling reliable use in space-constrained DC-DC feedback paths and USB port protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 70 V - maximum repetitive reverse blocking capability without breakdown |
| VF @ 1 mA | 410 mV - enables low-loss biasing and signal-level clamping in battery-powered systems |
| trr | 5.0 ns - supports >100 MHz switching in RF detector and high-speed logic interface circuits |
| IR @ 50 V | 100 nA - ensures minimal leakage in precision voltage reference and sensor bias networks |
| CT @ 0 V | 2.0 pF - preserves signal integrity in high-frequency AC coupling and RF sampling applications |
| RθJA | 625 °C/W - defines thermal derating slope (see Fig. 4); requires minimal copper area for 70 mA continuous operation |
Pinout & Package
Package: SOT323 - ultra-compact 3-pin surface-mount plastic 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 point | Connected to higher-potential node in clamping, OR-ing, or polarity protection configurations |
| Cathode (Pin 2) | Forward current exit / reverse blocking terminal | Typically tied to ground or lower-potential rail; carries full reverse voltage during off-state |
| No-connect (Pin 3) | Internal die attachment pad | Electrically isolated; serves mechanical anchoring and thermal conduction path to PCB |
Key Features
| Feature | Design Value |
|---|---|
| Low turn-on voltage | VF ≤ 410 mV @ 1 mA - reduces conduction loss in low-power signal routing and battery monitoring |
| Fast switching | trr ≤ 5.0 ns - minimizes timing skew and ringing in high-frequency detector and sample-hold circuits |
| PN junction guard ring | ESD robustness per IEC 61000-4-2 Level 4 (±15 kV air/±8 kV contact) - protects downstream ICs without external TVS |
| Ultra-small SOT323 package | Footprint 2.00 × 2.225 mm - fits 0402-class board area; compatible with standard pick-and-place equipment |
Applications
| USB Port Polarity Protection | RF Signal Detector Clamping |
|---|---|
Use Scenario: Preventing damage from reversed VBUS connection in Type-A/C receptacles. IC Role / Device Role / Timing Role: Low-VF series diode providing unidirectional current path while minimizing voltage drop across VBUS line. Use Value: Enables <10 mV added insertion loss at 500 mA, preserving USB 2.0 voltage margin and meeting USB-IF VBUS tolerance requirements. | Use Scenario: Peak-envelope detection in 2.4 GHz ISM-band receivers. IC Role / Device Role / Timing Role: Fast-switching Schottky rectifier converting RF AC to DC envelope signal with minimal phase distortion. Use Value: 2.0 pF capacitance and 5 ns trr preserve detector bandwidth up to 500 MHz, supporting accurate RSSI measurement. |
| Low-Power Sensor Bias Network | DC-DC Converter Feedback Path |
Use Scenario: Providing stable bias current to MEMS pressure sensors in wearable health monitors. IC Role / Device Role / Timing Role: Reverse-blocking element isolating reference voltage from sensor output during sleep mode. Use Value: 100 nA IR at 50 V ensures <0.5 µW standby leakage, extending battery life beyond 12 months in 10 µA average-current designs. | Use Scenario: Voltage divider isolation in optocoupler-based feedback loops of isolated flyback converters. IC Role / Device Role / Timing Role: High-speed clamp protecting TL431 reference input from transient overshoot during load transients. Use Value: Guard ring withstands 1 kV surge (IEC 61000-4-5), eliminating need for discrete TVS and reducing BOM count by one component. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NSR0230HT1G | Lower VF (270 mV @ 10 mA), but higher IR (2 µA @ 30 V) and larger SOD-123 package | Better efficiency at higher IF; unsuitable for ultra-low-leakage bias networks | Select when forward conduction loss dominates design, not leakage or size |
| RB520S-30T1G | Higher VRRM (30 V), lower CT (1.2 pF), same SOT-323 package, no guard ring | Optimized for 3.3 V logic clamping; lacks ESD hardening for exposed interfaces | Prefer for internal signal routing where ESD exposure is controlled |
Compared with NSR0230HT1G and RB520S-30T1G, BAS70W-04-7-F uniquely balances 70 V blocking, sub-500 mV VF at microamp bias, 2 pF capacitance, and integrated ESD protection-all within the smallest SOT323 footprint-making it optimal for space-limited, mixed-signal front-end protection.
Availability
BAS70W-04-7-F is available at Aetrix Electronics and suitable for USB interface protection, RF detector circuits, low-power sensor biasing, and isolated DC-DC feedback paths requiring stable component supply across automotive infotainment, industrial IoT gateways, and medical wearables.
Supply support for BAS70W-04-7-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 BAS70W series belongs to Diodes' high-speed Schottky diode product line, engineered specifically for low-voltage, high-frequency signal integrity and interface protection in portable and space-constrained electronics.
FAQ
What is the maximum operating temperature for BAS70W-04-7-F?
The device is rated for continuous operation from –55 °C to +125 °C junction temperature. Derating begins above +25 °C ambient per the published power derating curve (Fig. 4), where PD drops linearly to zero at +125 °C ambient on standard FR-4 PCB.
Does BAS70W-04-7-F have automotive qualification?
No-the BAS70W-04-7-F is an industrial-grade part. Diodes offers the automotive-compliant BAS70WQ-04Q variant, qualified to AEC-Q101 with extended temperature testing, enhanced process controls, and PPAP documentation.
How does the guard ring improve reliability?
The integrated PN junction guard ring provides edge termination that suppresses surface leakage and prevents premature avalanche breakdown under ESD stress. It enables compliance with IEC 61000-4-2 Level 4 (±15 kV air) without external protection components.
Can BAS70W-04-7-F replace BAS70W-05-7-F in a design?
No-BAS70W-04-7-F and BAS70W-05-7-F differ in forward voltage: -04 is binned to VF ≤ 410 mV @ 1 mA, while -05 is binned to VF ≤ 450 mV @ 1 mA. Substitution may affect low-current bias accuracy in precision analog circuits.
BAS70W-04-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-F FAQ
1.How can I place an order for BAS70W-04-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS70W-04-7-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 BAS70W-04-7-F reliable?
The price and inventory of BAS70W-04-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS70W-04-7-F is usually 5 days.
3.What payment methods are accepted for BAS70W-04-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS70W-04-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS70W-04-7-F?
BAS70W-04-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS70W-04-7-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 BAS70W-04-7-F?
For technical support, including BAS70W-04-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS70W-04-7-F requirements.
6.How does Aetrix verify that BAS70W-04-7-F is sourced from the original manufacturer or authorized distributors?
All BAS70W-04-7-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 BAS70W-04-7-F meets industry standards.
7.What is the process for return or replacement of BAS70W-04-7-F?
All BAS70W-04-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BAS70W-04-7-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 BAS70W-04-7-F part is unused and in its original packaging.
Return procedure for BAS70W-04-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAS70W-04-7-F Tags
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BAV99-7-F
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