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Diodes Incorporated BAT43W-7-F
- Part No.:
- BAT43W-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SOD-123
- Datasheet:
-
BAT43W-7-F.pdf
- Description:
- DIODE SCHOTTKY 30V 200MA SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:11,978
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Product details
Overview
BAT43W-7-F from Diodes Incorporated is a surface-mount Schottky barrier diode in SOD-123 package, designed for low-loss rectification and high-speed switching in space-constrained DC/DC converters and signal demodulation circuits. It delivers 30 V peak repetitive reverse voltage, 200 mA forward continuous current, 0.45 V forward voltage at 15 mA, 5.0 ns reverse recovery time, and 10 pF junction capacitance at 1.0 V reverse bias.
For engineers reviewing the BAT43W-7-F datasheet, BAT43W-7-F pinout, BAT43W-7-F application, or BAT43W-7-F equivalent, key selection criteria include forward voltage vs. current trade-off (0.33–0.45 V across 5–15 mA), thermal resistance (500 °C/W on FR-4), reverse leakage (<100 nA at 25 V), and compatibility with automated SMT assembly in lead-free/RoHS-compliant production.
Technical Context
This Schottky diode uses a platinum-silicide or similar low-barrier metal-semiconductor junction to achieve fast switching and minimal forward conduction loss. Its 5.0 ns reverse recovery time and sub-1 V forward drop at rated current enable efficient operation in high-frequency (>1 MHz) switching regulators and RF detector stages.
The device operates across –55 °C to +125 °C and exhibits stable reverse leakage (<500 nA at 25 V, <100 nA at 25 V/100 °C), making it suitable for battery-powered and thermally variable environments where leakage-induced quiescent current must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum repetitive reverse voltage before breakdown; defines safe blocking range in 24 V rail clamping or flyback snubbing |
| IFM | 200 mA - Continuous forward current rating on standard FR-4 PCB; sets max steady-state power delivery in low-power supply rails |
| VFM | 0.45 V @ 15 mA - Low forward drop enables >95% rectifier efficiency in low-current signal paths and bias networks |
| trr | 5.0 ns - Enables clean switching in 45 MHz RF detectors and >10 MHz DC/DC controllers without tail current distortion |
| CT | 10 pF @ 1.0 V - Minimal junction capacitance preserves high-frequency signal integrity in mixer and sampling applications |
| RJA | 500 °C/W - Thermal resistance on recommended FR-4 pad layout; requires derating above 75 °C ambient per Fig. 1 |
| IRM | <100 nA @ 25 V, 100 °C - Ultra-low leakage maintains battery runtime in always-on sensor nodes and backup power paths |
Pinout & Package
Package: SOD-123 - Surface-mount plastic case (UL 94V-0), dimensions 3.55–3.85 mm × 2.55–2.85 mm × 1.40–1.70 mm, cathode marked by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to higher-potential node (e.g., switch node in buck converter); polarity-sensitive for rectification direction |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; ties to ground or lower-potential rail; blocks up to 30 V reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage | 0.45 V @ 15 mA - Reduces conduction loss in low-voltage bias supplies and improves efficiency in energy-harvesting circuits |
| Fast switching | 5.0 ns trr - Minimizes switching loss and ringing in high-frequency SMPS feedback paths and RF envelope detection |
| Small footprint | SOD-123 package - Enables dense PCB layouts in wearables and IoT edge nodes where board area is constrained |
| RoHS-compliant | Lead-free matte tin plating - Meets global environmental compliance requirements without sacrificing solderability or thermal performance |
| Wide temperature range | –55 °C to +125 °C - Supports deployment in automotive under-hood modules and industrial control cabinets without derating |
Applications
| Power Supply Clamp | RF Signal Detector |
|---|---|
Use Scenario: Clamping transient voltage spikes on 24 V industrial I/O lines during relay switching or ESD events. IC Role / Device Role / Timing Role: Schottky clamp diode placed between signal line and VCC/GND to shunt overvoltage while minimizing forward conduction loss. Use Value: 30 V VRRM and 0.45 V VFM ensure reliable clamping without loading the 24 V rail under normal operation. | Use Scenario: Demodulating AM signals in low-power wireless sensor receivers operating at 45 MHz. IC Role / Device Role / Timing Role: Passive envelope detector using nonlinear I–V curve of Schottky junction. Use Value: 10 pF CT and 5.0 ns trr preserve signal fidelity and response speed without requiring external tuning components. |
| Low-Current Bias Supply | Reverse Polarity Protection |
Use Scenario: Providing regulated bias current to op-amp input stages in battery-powered instrumentation. IC Role / Device Role / Timing Role: Low-leakage series rectifier in micropower LDO pre-regulator path. Use Value: <100 nA IRM at 100 °C prevents measurable battery drain over multi-year deployments. | Use Scenario: Protecting USB-C peripheral ports from accidental reverse connection in portable medical devices. IC Role / Device Role / Timing Role: Series-connected anode-to-source protection diode in 5 V power path. Use Value: 200 mA IFM and 0.45 V drop limit voltage loss and heat rise in compact USB port layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBAT43LT1G | Same VRRM (30 V), slightly higher VFM (0.5 V @ 10 mA), identical SOD-123 package | Higher forward drop increases conduction loss in ultra-low-power bias networks | Select when legacy design validation exists for ON Semiconductor's SBAT43LT1G and no VFM margin is critical |
| BAT54C-7-F | Dual common-cathode configuration, 30 V VRRM, 0.33 V VFM @ 10 mA, SOT-23 package | Smaller die but larger footprint; dual channel enables complementary signal routing | Choose for dual-diode functions or tighter VFM tolerance, accepting SOT-23 rework and layout change |
Compared with BAT43W-7-F, SBAT43LT1G trades marginal VFM increase for second-source availability, while BAT54C-7-F offers dual functionality and lower VFM at the cost of package conversion and pinout redesign.
Availability
BAT43W-7-F is available at Aetrix Electronics and suitable for DC/DC converter clamp circuits, RF detector stages, low-current bias supplies, and reverse polarity protection requiring stable component supply across automotive, industrial, and IoT product lifecycles.
Supply support for BAT43W-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 and manufacturing operations across Asia and the Americas.
The BATxW series targets high-efficiency, high-reliability surface-mount Schottky rectification in space- and power-constrained applications including portable electronics, industrial controls, and communications infrastructure.
FAQ
What is the maximum junction temperature for BAT43W-7-F?
The absolute maximum junction temperature is +125 °C, consistent with its specified operating and storage temperature range of –55 °C to +125 °C. Derating begins above 75 °C ambient per the forward current derating curve in Figure 1, where IFM reduces linearly to zero at 125 °C ambient on standard FR-4 layout.
Is BAT43W-7-F compatible with lead-free reflow soldering profiles?
Yes - BAT43W-7-F is explicitly qualified for lead-free/RoHS-compliant assembly. It features matte tin plating over Alloy 42 leadframe and meets JEDEC J-STD-020C moisture sensitivity level 1, allowing standard Pb-free reflow profiles without pre-bake.
How does BAT43W-7-F differ from BAT42W-7-F?
BAT43W-7-F has a higher forward voltage (0.45 V @ 15 mA) than BAT42W-7-F (0.33 V @ 15 mA), reflecting different Schottky barrier height tuning. Both share identical VRRM (30 V), trr (5.0 ns), package (SOD-123), and thermal specs - BAT43W prioritizes lower leakage over minimal VFM.
Can BAT43W-7-F be used in place of a general-purpose 1N4148?
No - BAT43W-7-F is a Schottky diode with 30 V VRRM and 0.45 V VFM, whereas 1N4148 is a silicon switching diode with 100 V VRRM and ~1.0 V VFM. Substitution risks reverse breakdown in 48 V systems and alters timing in RC-based pulse shaping due to differing trr (5 ns vs. 4 ns) and capacitance (10 pF vs. 4 pF).
BAT43W-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-123
- Operating Temperature - Junction:
- -55°C ~ 125°C
BAT43W-7-F FAQ
1.How can I place an order for BAT43W-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT43W-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 BAT43W-7-F reliable?
The price and inventory of BAT43W-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 BAT43W-7-F is usually 5 days.
3.What payment methods are accepted for BAT43W-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT43W-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT43W-7-F?
BAT43W-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT43W-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 BAT43W-7-F?
For technical support, including BAT43W-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT43W-7-F requirements.
6.How does Aetrix verify that BAT43W-7-F is sourced from the original manufacturer or authorized distributors?
All BAT43W-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 BAT43W-7-F meets industry standards.
7.What is the process for return or replacement of BAT43W-7-F?
All BAT43W-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BAT43W-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 BAT43W-7-F part is unused and in its original packaging.
Return procedure for BAT43W-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAT43W-7-F Tags
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