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Diodes Incorporated BAT42WS-7
- Part No.:
- BAT42WS-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BAT42WS-7.pdf
- Description:
- DIODE SCHOTTKY 30V 200MA SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:8,718
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Product details
Overview
BAT42WS-7 from Diodes Incorporated is a surface-mount Schottky barrier diode in SOD323 package, rated for 30 V peak reverse voltage and 200 mA continuous forward current, with low 0.65 V forward voltage at 50 mA and 5 ns reverse recovery time-used in high-efficiency DC-DC converter output rectification and low-voltage signal clamping.
For engineers reviewing the BAT42WS-7 datasheet, BAT42WS-7 pinout, BAT42WS-7 application, or BAT42WS-7 equivalent, key selection criteria include forward voltage drop at operating current, reverse leakage at elevated temperature, junction-to-ambient thermal resistance, and SOD323 footprint compatibility with space-constrained PCB layouts.
Technical Context
This Schottky diode leverages a platinum-silicide (PtSi) or similar low-barrier metal-semiconductor junction to achieve fast switching (tRR ≤ 5 ns) and low conduction loss. Its 30 V VRWM rating supports 24 V rail applications while maintaining <500 nA reverse leakage at 25 V and 25°C.
The device operates across –55°C to +125°C with 625°C/W junction-to-ambient thermal resistance on FR4 board, requiring minimal copper area for thermal management. Polarity is marked by cathode band; terminals are matte tin-plated for reliable solderability per MIL-STD-202.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 30 V - Maximum DC blocking voltage before significant leakage or breakdown in normal operation |
| IF (continuous) | 200 mA - Sustained forward current capability without exceeding 200 mW power dissipation |
| VF @ 50 mA | 0.65 V - Low conduction loss enabling >90% efficiency in 3.3 V–5 V synchronous rectifier auxiliary paths |
| tRR | 5.0 ns - Enables use in >1 MHz switching converters without reverse recovery losses |
| IR @ 25 V, 25°C | ≤500 nA - Minimal leakage preserves battery life in always-on sensor node power rails |
| RθJA | 625 °C/W - Requires ≥10 mm² of 1-oz copper pour for safe operation at full IF in ambient air |
| TJ range | –55°C to +125°C - Qualified for under-hood automotive and industrial control environments |
Pinout & Package
Package: SOD323 - ultra-small plastic surface-mount package (1.30 × 1.70 × 0.95 mm), moisture sensitivity level 1, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., switch node in buck converter); no internal series resistance added |
| Cathode | Forward current exit / reverse voltage blocking terminal | Marked by visible band; ties to output rail or ground return path; withstands 30 V reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage | VF = 0.65 V @ 50 mA enables <100 mW conduction loss in 5 V/200 mA load paths |
| Fast switching | 5 ns tRR eliminates tail current in high-frequency (>1 MHz) PWM circuits |
| Ultra-small footprint | SOD323 (1.3 × 1.7 mm) saves >60% board area vs. SOD123 in wearables and IoT sensors |
| AEC-Q200 readiness | Manufactured in IATF 16949-certified facilities; PPAP-capable for automotive subsystems |
Applications
| USB Power Switching | Automotive Body Control Module |
|---|---|
Use Scenario: Reverse polarity protection and VBUS isolation in USB-C port power routing. IC Role / Device Role / Timing Role: Schottky OR-ing diode between two 5 V sources with automatic source selection. Use Value: 0.65 V VF limits voltage drop to <3% of 5 V rail, preserving downstream USB PD negotiation margin. | Use Scenario: Clamping transient spikes on LIN bus lines during load dump events. IC Role / Device Role / Timing Role: Bidirectional ESD/transient suppressor placed across LIN data pair. Use Value: 5 ns tRR ensures clamping response precedes microcontroller input damage thresholds. |
| Wearable Sensor Power Rail | Industrial PLC Input Conditioning |
Use Scenario: Isolation of coin-cell backup supply from main Li-ion rail in hearable devices. IC Role / Device Role / Timing Role: Low-leakage blocking diode preventing backfeed into depleted backup cell. Use Value: ≤500 nA IR at 25 V extends 20 mAh coin-cell lifetime beyond 3 years in standby mode. | Use Scenario: Signal-level protection on 24 V digital input channels exposed to field wiring noise. IC Role / Device Role / Timing Role: Reverse-biased clamp limiting input voltage swing to ±30 V. Use Value: 30 V VRWM accommodates 24 V nominal with 25% tolerance and surge margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RB520S-30T2R | Same SOD-323 package; 30 V VRWM, but higher VF = 0.75 V @ 100 mA | Higher conduction loss reduces efficiency in battery-powered 3.3 V systems | Select when cost priority outweighs 100 mV VF penalty and thermal margin exists |
| NSR0230HT1G | Smaller SOD-523 (1.0 × 0.6 mm); same 30 V rating but 0.45 V VF @ 100 mA | Reduced board area but tighter assembly tolerance and lower surge rating (IFSM = 2.0 A) | Prefer for ultra-dense layouts where 2.0 A surge margin suffices and reflow profile is tightly controlled |
Compared with RB520S-30T2R and NSR0230HT1G, BAT42WS-7 delivers optimal balance of low VF, proven 4.0 A surge robustness, and industry-standard SOD323 manufacturability-making it preferred for production-grade 24 V industrial and automotive modules.
Availability
BAT42WS-7 is available at Aetrix Electronics and suitable for USB power routing, automotive body electronics, wearable sensor power management, and industrial PLC input conditioning requiring stable component supply and long-term lifecycle support.
Supply support for BAT42WS-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 BAT42WS belongs to Diodes' general-purpose Schottky diode product line, engineered for high-speed, low-loss rectification and clamping in space- and efficiency-critical power and signal paths.
FAQ
What is the maximum allowable junction temperature for BAT42WS-7?
The absolute maximum junction temperature is +125°C, consistent with its specified operating temperature range of –55°C to +125°C. At 200 mA continuous forward current, junction temperature rise is limited to 125°C only if ambient temperature remains ≤25°C and PCB thermal design meets the recommended pad layout for 625°C/W RθJA.
Is BAT42WS-7 qualified for automotive applications?
BAT42WS-7 is manufactured in IATF 16949-certified facilities and supports PPAP documentation. While not pre-qualified to AEC-Q101, Diodes offers AEC-Q101 versions (e.g., BAT42WSQ-7-F) with full stress test reports; standard BAT42WS-7 is widely used in non-safety-critical automotive modules such as infotainment power supplies and lighting controls.
Does BAT42WS-7 have a specified reverse recovery charge (Qrr)?
No Qrr value is published in the DS30100 datasheet. The device specifies tRR = 5.0 ns under defined test conditions (IF = IR = 10 mA, IRR = 0.1 × IR, RL = 100 Ω), which implies low stored charge-but designers requiring precise Qrr must consult Diodes' application notes or characterize using double-pulse test setups.
Can BAT42WS-7 replace BAT43WS in the same footprint?
Yes-BAT42WS-7 and BAT43WS-7 share identical SOD323 packaging and pinout, but differ electrically: BAT42WS has higher VF (0.65 V @ 50 mA) versus BAT43WS (0.45 V @ 15 mA). Substitution is acceptable only if the higher forward drop does not violate system voltage margin or thermal limits in the target application.
BAT42WS-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io):
- 200mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 200 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 5 ns
- Current - Reverse Leakage @ Vr:
- 500 nA @ 25 V
- Capacitance @ Vr, F:
- 10pF @ 1V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
- Operating Temperature - Junction:
- -55°C ~ 125°C
BAT42WS-7 FAQ
1.How can I place an order for BAT42WS-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT42WS-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 BAT42WS-7 reliable?
The price and inventory of BAT42WS-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT42WS-7 is usually 5 days.
3.What payment methods are accepted for BAT42WS-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT42WS-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT42WS-7?
BAT42WS-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT42WS-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 BAT42WS-7?
For technical support, including BAT42WS-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT42WS-7 requirements.
6.How does Aetrix verify that BAT42WS-7 is sourced from the original manufacturer or authorized distributors?
All BAT42WS-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 BAT42WS-7 meets industry standards.
7.What is the process for return or replacement of BAT42WS-7?
All BAT42WS-7 units undergo pre-shipment inspection (PSI). If there is an issue with BAT42WS-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 BAT42WS-7 part is unused and in its original packaging.
Return procedure for BAT42WS-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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