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STMicroelectronics BAT30CWFILM
- Part No.:
- BAT30CWFILM
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- SC-70, SOT-323
- Datasheet:
-
BAT30CWFILM.pdf
- Description:
- DIODE ARR SCHOT 30V 300MA SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:18,586
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Product details
Overview
BAT30CWFILM from STMicroelectronics is a 30 V, 300 mA common-cathode dual Schottky diode in SOT-323 package, optimized for high-frequency switching applications requiring low forward voltage (530 mV at 300 mA) and low junction capacitance (14 pF at 1 V). It serves as a fast-switching rectifier or clamping diode in DC-DC converters, USB power switches, and RF detector circuits.
For engineers reviewing the BAT30CWFILM datasheet, BAT30CWFILM pinout, BAT30CWFILM application, or BAT30CWFILM equivalent, key selection criteria include its dual common-cathode configuration, 150 °C max junction temperature, 225 mW power dissipation on epoxy PCB, negligible reverse recovery time, and RoHS/ECOPACK®2 compliance for space-constrained industrial and portable designs.
Technical Context
The BAT30CWFILM integrates two independent Schottky barrier diodes sharing a single cathode terminal, enabling compact dual-path rectification or level-shifting without discrete pairing. Its epitaxial construction delivers low VF drift over temperature and sub-nanosecond switching transitions.
Designed for surface-mount use on standard FR-4 or epoxy PCBs with recommended pad layouts, it achieves thermal resistance of 550 °C/W (junction-to-ambient) and supports surge currents up to 1 A (10 ms, sinusoidal), making it suitable for transient-tolerant power rail protection and signal clamping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit in 24 V bus clamping |
| IF (cont) | 300 mA - Continuous forward current rating; defines steady-state power delivery capability |
| VF @ 300 mA | 530 mV - Forward voltage drop at rated current; determines conduction loss (0.159 W) in DC-DC output stage |
| C @ 1 V | 14 pF - Junction capacitance at 1 V reverse bias; enables >100 MHz small-signal switching in RF detectors |
| Tj (max) | 150 °C - Maximum junction temperature; allows operation in sealed enclosures or high-ambient industrial environments |
| Rth(j-a) | 550 °C/W - Thermal resistance on epoxy PCB; informs heatsinking requirements for sustained 225 mW dissipation |
| IR @ 30 V | 5 µA - Reverse leakage at max rated voltage and 25 °C; ensures minimal standby current in battery-powered systems |
Pinout & Package
Package: SOT-323 - 3-pin plastic surface-mount package with gull-wing leads, 2.0 × 1.25 mm footprint, 0.65 mm lead pitch, and 2.1 mm height. Compliant with JEDEC MO-203AA and ECOPACK®2 environmental standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode A) | First anode connection | Input path for first diode; routed to switch node or signal source in dual-path topology |
| 2 (Cathode) | Common cathode | Shared return node for both diodes; connects to ground, VOUT, or reference rail |
| 3 (Anode B) | Second anode connection | Independent input for second diode; enables differential clamping or dual-rail rectification |
Key Features
| Feature | Design Value |
|---|---|
| Common-cathode dual configuration | Reduces board area by 40% vs. two discrete SOD-523 diodes; eliminates interconnect inductor in shared-return paths |
| Low VF (375 mV @ 10 mA) | Minimizes voltage offset in precision signal clamping and improves efficiency in low-voltage (<3.3 V) power routing |
| Ultra-low C (14 pF @ 1 V) | Preserves signal integrity in 50 Ω RF detector front-ends up to 2.4 GHz without added matching networks |
| 150 °C Tj rating | Supports uninterrupted operation in automotive under-hood modules and industrial motor drive control boards |
| ECOPACK®2 / RoHS | Meets EU Directive 2011/65/EU and halogen-free requirements for consumer electronics and medical devices |
Applications
| USB Power Switch Protection | DC-DC Converter Output Rectification |
|---|---|
Use Scenario: Preventing backfeed and overvoltage transients when multiple USB ports share a common VBUS rail. IC Role / Device Role / Timing Role: Dual-anode clamping diode with shared cathode tied to system ground; blocks reverse current during hot-plug events. Use Value: 530 mV forward drop limits insertion loss to <2% at 300 mA, while 14 pF capacitance avoids signal distortion on USB 2.0 data lines. | Use Scenario: Synchronous rectification replacement in 3.3 V/5 V buck converter outputs where gate drive complexity is prohibitive. IC Role / Device Role / Timing Role: Low-loss freewheeling path during high-side FET off-time; operates in continuous conduction mode up to 1 MHz. Use Value: 300 mA rating and 550 °C/W thermal resistance allow full-load operation without heatsink on 2-layer PCBs. |
| RF Signal Detector Clamp | Industrial Sensor Interface Protection |
Use Scenario: Peak detection and AC coupling in 2.4 GHz ISM-band receiver front-ends using envelope detection. IC Role / Device Role / Timing Role: Fast-turn-on Schottky clamp limiting input swing to ±0.3 V; leverages sub-ns recovery for minimal pulse distortion. Use Value: 14 pF capacitance at 1 V reverse bias maintains impedance match to 50 Ω source, preserving detector sensitivity. | Use Scenario: Protecting analog inputs of 4–20 mA current-loop transmitters against ESD and cable-induced surges. IC Role / Device Role / Timing Role: Bidirectional clamping pair (anodes to signal line, cathode to VDD); shunts ±8 kV HBM transients per IEC 61000-4-2 Level 4. Use Value: 5 µA reverse leakage at 30 V ensures <1 µA error contribution to microamp-level sensor current measurement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NSR20F30NXT5G | Single-diode SOD-523 package; 30 V, 200 mA, VF = 450 mV @ 200 mA; no common-cathode configuration | Requires two devices and extra layout area for dual-path function; lower current rating limits use in >200 mA rails | Select only when board space permits discrete placement and current demand is ≤200 mA per path |
| BAT54CW,115 | Common-cathode SOT-323 dual Schottky; 30 V, 200 mA, VF = 500 mV @ 100 mA; higher IR (10 µA @ 30 V) | Lower IF rating reduces margin in 300 mA DC-DC outputs; elevated leakage affects precision sensor biasing | Acceptable for cost-sensitive consumer applications where 200 mA load and 10 µA leakage are within spec |
Compared with NSR20F30NXT5G and BAT54CW,115, BAT30CWFILM uniquely combines 300 mA continuous current, 530 mV VF at full rating, and 5 µA IR - delivering higher power density and lower measurement error in industrial and USB-C PD-compliant designs.
Availability
BAT30CWFILM is available at Aetrix Electronics and suitable for USB power management, DC-DC converter rectification, RF detector clamping, and industrial sensor interface protection requiring stable component supply across multi-year production cycles.
Supply support for BAT30CWFILM 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and discrete components for automotive, industrial, and consumer markets.
The BAT30 series belongs to ST's small-signal Schottky diode product line, engineered specifically for high-efficiency, high-frequency switching in space-constrained power and signal conditioning circuits.
FAQ
What is the pin 1 marking convention for BAT30CWFILM?
Pin 1 is the anode of the first diode (Anode A), identified by a small beveled edge or notch on the SOT-323 package body near the lead. The cathode (pin 2) is centered, and pin 3 is Anode B - confirmed in ST's Figure 12 and Table 8 ordering information.
Can BAT30CWFILM replace BAT54CW in existing designs?
Yes, with verification: both use SOT-323 and common-cathode pinout, but BAT30CWFILM offers +50% higher IF (300 mA vs. 200 mA) and lower IR (5 µA vs. 10 µA at 30 V). Layout is identical; thermal performance improves due to 225 mW vs. 200 mW PD rating.
Is BAT30CWFILM suitable for 5 V USB OTG host port protection?
Yes - its 30 V VRRM provides 6× margin over 5 V nominal, 530 mV VF ensures <2.7% voltage drop at 300 mA, and 14 pF capacitance avoids degrading USB 2.0 eye diagram integrity. Common-cathode structure simplifies dual-VBUS isolation in dual-role ports.
Does BAT30CWFILM require derating above 85 °C ambient?
Yes - per Figure 2 in the datasheet, continuous forward current must be linearly derated from 300 mA at 25 °C to 0 A at 150 °C junction temperature. On a standard epoxy PCB, this corresponds to ~220 mA at 85 °C ambient, assuming 550 °C/W Rth(j-a) and no forced airflow.
BAT30CWFILM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io) (per Diode):
- 300mA (DC)
- Voltage - Forward (Vf) (Max) @ If:
- 530 mV @ 300 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 5 µA @ 30 V
- Operating Temperature - Junction:
- 150°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BAT30CWFILM FAQ
1.How can I place an order for BAT30CWFILM through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT30CWFILM 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 BAT30CWFILM reliable?
The price and inventory of BAT30CWFILM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT30CWFILM is usually 5 days.
3.What payment methods are accepted for BAT30CWFILM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT30CWFILM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT30CWFILM?
BAT30CWFILM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT30CWFILM 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 BAT30CWFILM?
For technical support, including BAT30CWFILM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT30CWFILM requirements.
6.How does Aetrix verify that BAT30CWFILM is sourced from the original manufacturer or authorized distributors?
All BAT30CWFILM 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 BAT30CWFILM meets industry standards.
7.What is the process for return or replacement of BAT30CWFILM?
All BAT30CWFILM units undergo pre-shipment inspection (PSI). If there is an issue with BAT30CWFILM, 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 BAT30CWFILM part is unused and in its original packaging.
Return procedure for BAT30CWFILM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAT30CWFILM Tags
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