My Inquiry
My Account
Diodes Incorporated BAT54W-7
- Part No.:
- BAT54W-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BAT54W-7.pdf
- Description:
- SCHOTTKY SOT323 30V 0.2A 150C
- Quantity:
- Payment:
- Shipping:
Inventory:24
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BAT54W-7 from Diodes Incorporated is a surface-mount Schottky barrier diode in SOT323 package, rated for 30 V peak reverse voltage, 200 mA continuous forward current, and 320 mV max forward voltage at 1 mA. It serves as a freewheeling or blocking diode in compact DC-DC converters and reverse polarity protection circuits.
For engineers reviewing the BAT54W-7 datasheet, BAT54W-7 pinout, BAT54W-7 application, or BAT54W-7 equivalent, key selection criteria include low VF for efficiency-critical 3.3 V/5 V rail clamping, fast 5 ns reverse recovery for high-frequency switching nodes, ultra-small SOT323 footprint for space-constrained PCBs, and guaranteed 2 µA IR at 25 V for low-leakage hold-up paths.
Technical Context
This Schottky diode uses a platinum-silicide (PtSi) or similar low-barrier metal-semiconductor junction to achieve low forward voltage and fast switching-no minority carrier storage delay. Its guard-ringed PN junction structure enhances ESD robustness without compromising speed.
Thermal resistance of 625 °C/W (junction-to-ambient, FR-4 board) and 200 mW power dissipation define its thermal envelope in unheatsinked layouts. The device operates across –65 °C to +125 °C, supporting industrial and automotive-qualified variants (BAT54WQ series).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Supports input rails up to 24 V nominal with safety margin for transient spikes |
| IF | 200 mA continuous - Suitable for low-power signal path clamping or bias supply rectification |
| VF Max | 320 mV @ 1 mA - Enables <100 mW conduction loss in 100 mA load paths at room temperature |
| IR Max | 2 µA @ 25 V - Ensures minimal leakage in battery-backed or high-impedance sensing nodes |
| tRR | 5 ns - Allows use in >10 MHz switching regulators without significant switching loss penalty |
| CT | 10 pF @ 1 V - Low capacitance preserves signal integrity in RF detector or high-speed logic clamp roles |
| RθJA | 625 °C/W - Requires ≤100 mW dissipation on standard FR-4 to stay below 125 °C junction limit |
Pinout & Package
Package: SOT323 - Ultra-compact 3-pin surface-mount plastic package (2.0 × 2.2 mm body, 0.9 mm height), lead-free, RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry | Connected to lower-potential node (e.g., ground side of inductor) in freewheeling configuration |
| Cathode (Pin 2) | Forward current exit / reverse blocking terminal | Connected to higher-potential node (e.g., switch node); blocks reverse current during off-state |
| NC / Heat Sink Pad (Pin 3) | No internal connection | Exposed pad is electrically isolated; may be used for mechanical anchoring or thermal relief only |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage drop | 320 mV max at 1 mA enables >95% efficiency in 3.3 V synchronous buck auxiliary paths |
| Fast switching speed | 5 ns tRR supports operation in 10–50 MHz DC-DC controllers without snubber networks |
| PN junction guard ring | ESD rating per AEC-Q101 exceeds ±8 kV HBM, protecting against board-level handling transients |
| Ultra-small SOT323 package | 0.006 g mass and 2.0 × 2.2 mm footprint reduce PCB area by 60% vs. SOT23 in dense power modules |
Applications
| SMPS Freewheeling Diode | Reverse Polarity Protection |
|---|---|
Use Scenario: Placed across the inductor in non-synchronous buck converters to provide current recirculation path during high-side FET off-time. IC Role / Device Role: Freewheeling diode enabling energy transfer and preventing inductive kickback damage. Use Value: 320 mV VF minimizes conduction loss in 100–200 mA output stages, improving light-load efficiency by up to 3% versus standard silicon diodes. | Use Scenario: Connected in series with VIN to block reverse current when external power supply is incorrectly connected with inverted polarity. IC Role / Device Role: Series-blocking diode ensuring system safety under miswiring conditions. Use Value: 2 µA IR at 25 V prevents battery drain in always-on systems; SOT323 allows placement near connector with minimal trace length. |
| DC-DC Converter Output Clamp | Signal-Level Voltage Clamping |
Use Scenario: Used in boost converter output stage to clamp overshoot during load transients or startup. IC Role / Device Role: Output voltage limiter protecting downstream LDOs or microcontrollers. Use Value: 30 V VRRM accommodates 24 V input boost designs; 10 pF CT avoids signal distortion in 1–10 MHz feedback loops. | Use Scenario: Clamping analog sensor outputs (e.g., thermistor, Hall effect) to MCU GPIO rails to prevent overvoltage damage. IC Role / Device Role: Rail-to-rail signal clamp limiting excursion to VDD + 0.3 V and GND – 0.3 V. Use Value: Sub-0.4 V forward drop ensures clamping threshold stays within ±0.3 V of supply rails, meeting most 3.3 V/5 V I/O tolerance specs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MBR0530T1G (ON Semiconductor) | Same 30 V VRRM, but SOT23 package (larger footprint), 450 mV VF @ 1 mA | Higher forward drop increases conduction loss in low-current bias paths | Select when board layout allows larger SOT23 and cost is prioritized over size/efficiency |
| SD103AW-7-F (Diodes Inc.) | Same SOT323 package, but 40 V VRRM, 480 mV VF @ 1 mA, higher leakage (5 µA) | Higher VF reduces efficiency in 3.3 V systems; wider voltage margin suits 36 V industrial inputs | Select when 40 V rating is required and 180 mV higher VF is acceptable for target efficiency budget |
Compared with MBR0530T1G and SD103AW-7-F, BAT54W-7 delivers the lowest forward voltage in the smallest footprint-critical for miniaturized 3.3 V/5 V DC-DC modules where thermal headroom and PCB area are constrained.
Availability
BAT54W-7 is available at Aetrix Electronics and suitable for SMPS freewheeling, reverse polarity protection, and DC-DC converter output clamping requiring stable component supply and consistent parametric performance across production lots.
Supply support for BAT54W-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 BAT54 family belongs to Diodes' high-efficiency Schottky diode product line, engineered specifically for space- and power-sensitive applications in portable electronics, industrial power supplies, and automotive subsystems.
FAQ
What is the maximum junction temperature for BAT54W-7?
The absolute maximum junction temperature is +125 °C, with operating range specified from –65 °C to +125 °C. Derating begins at +25 °C ambient, with full 200 mW power dissipation permitted only below 25 °C; above that, linear derating applies at 0.32 mW/°C based on RθJA = 625 °C/W.
Is BAT54W-7 suitable for automotive applications?
The BAT54W-7 is not AEC-Q200 qualified. For automotive use, Diodes offers the pin- and form-compatible BAT54WQ-7-F variant, which meets AEC-Q101 stress testing requirements and is qualified for under-hood and infotainment applications up to 125 °C ambient.
How does the guard ring improve reliability?
The integrated PN junction guard ring surrounds the Schottky anode, suppressing edge breakdown and enhancing transient immunity. It raises ESD robustness to ≥8 kV HBM and improves surge tolerance during board-level handling and system-level voltage transients without degrading forward characteristics.
Can BAT54W-7 replace BAT54C in a circuit?
No-BAT54W is a single diode in SOT323; BAT54C is a dual common-cathode diode in SOT363. Pin count, pinout, and internal configuration differ fundamentally. Substitution requires PCB redesign and validation of reverse recovery interaction between channels in dual-diode topologies.
BAT54W-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
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io):
- 200mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 100 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 5 ns
- Current - Reverse Leakage @ Vr:
- 2 µA @ 25 V
- Capacitance @ Vr, F:
- 10pF @ 1V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
- Operating Temperature - Junction:
- -65°C ~ 125°C
BAT54W-7 FAQ
1.How can I place an order for BAT54W-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT54W-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 BAT54W-7 reliable?
The price and inventory of BAT54W-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT54W-7 is usually 5 days.
3.What payment methods are accepted for BAT54W-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT54W-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT54W-7?
BAT54W-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT54W-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 BAT54W-7?
For technical support, including BAT54W-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT54W-7 requirements.
6.How does Aetrix verify that BAT54W-7 is sourced from the original manufacturer or authorized distributors?
All BAT54W-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 BAT54W-7 meets industry standards.
7.What is the process for return or replacement of BAT54W-7?
All BAT54W-7 units undergo pre-shipment inspection (PSI). If there is an issue with BAT54W-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 BAT54W-7 part is unused and in its original packaging.
Return procedure for BAT54W-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAT54W-7 Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
