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STMicroelectronics BAT30LFILM
- Part No.:
- BAT30LFILM
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- SOD-923
- Datasheet:
-
BAT30LFILM.pdf
- Description:
- DIODE SCHOTTKY 30V 300MA SOD923
- Quantity:
- Payment:
- Shipping:
Inventory:6,493
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Product details
Overview
BAT30LFILM from STMicroelectronics is a single 30 V, 300 mA surface-mount Schottky barrier diode in SOD-923 package, featuring low forward voltage drop (530 mV at 300 mA), low reverse leakage (≤0.65 µA at 25 V), and ultra-low capacitance (14 pF at 1 V). It is optimized for high-frequency switching applications including DC-DC converters and RF detector circuits.
For engineers reviewing the BAT30LFILM datasheet, BAT30LFILM pinout, BAT30LFILM application, or BAT30LFILM equivalent, key selection criteria include its 14 pF junction capacitance at 1 V, 300 mA continuous forward current rating, 150 °C maximum junction temperature, and SOD-923 footprint compatibility with space-constrained portable electronics designs.
Technical Context
The BAT30LFILM employs a planar Schottky barrier structure on silicon to achieve negligible reverse recovery time and minimal conduction losses. Its low VF (530 mV typ. @ 300 mA) directly reduces power dissipation in high-duty-cycle switching paths.
Thermal performance is defined by Rth(j-a) = 900 °C/W on FR4 PCB (SOD-923), requiring careful copper area design for thermal management. Junction capacitance varies from 22 pF (0 V) to 6 pF (10 V), enabling stable RF detection across 1–100 MHz bands.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum reverse blocking voltage before breakdown; suitable for 24 V rail clamping and 5 V/12 V DC-DC flyback snubbing. |
| IF | 300 mA - Continuous forward current capacity; supports moderate-power signal routing without derating below 70 °C ambient. |
| VF @ 300 mA | 530 mV typ. - Low conduction loss enables >95% efficiency in low-voltage synchronous rectifier replacement roles. |
| Cj @ 1 V | 14 pF - Ultra-low junction capacitance minimizes signal distortion in RF envelope detection and high-speed sampling circuits. |
| IR @ 25 V | 0.65 µA typ. - Low leakage preserves battery life in always-on sensor nodes and maintains accuracy in precision analog front-ends. |
| Tj(max) | 150 °C - Enables operation in thermally dense environments such as LED driver ICs and automotive body control modules. |
| Rth(j-a) | 900 °C/W - Requires ≥2.25 mm² copper pad per lead on FR4 to sustain 300 mA continuously at Tamb ≤ 65 °C. |
Pinout & Package
SOD-923 is a miniature surface-mount plastic package (0.60 × 1.00 mm, 0.21 mm height) with two gull-wing leads, compliant with JEDEC MO-252. It supports automated placement and reflow soldering per IPC-J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward current entry point | Connected to higher-potential node in rectification or clamping; must be routed with low-inductance trace for RF applications. |
| Cathode (K) | Forward current exit point / reverse bias terminal | Typically tied to ground or lower-potential rail; serves as reference for leakage-sensitive analog sensing paths. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low forward voltage | 530 mV at 300 mA - Reduces conduction loss by ~40% vs. standard silicon diodes in 3.3 V supply rails. |
| Negligible reverse recovery | No minority carrier storage - Eliminates switching tail current, enabling clean zero-crossing detection in AC line sensing. |
| Low capacitance | 14 pF at 1 V - Preserves signal integrity in 100 MHz+ RF detector and mixer bias networks. |
| Miniature SOD-923 footprint | 0.60 × 1.00 mm - Saves >60% board area vs. SOD-323, critical for wearable and hearing aid PCB real estate. |
| High-temperature operation | 150 °C max junction - Supports under-hood automotive sensors and industrial motor drive feedback paths. |
Applications
| RF Signal Detection | Low-Voltage Power OR'ing |
|---|---|
Use Scenario: Envelope detection of 433 MHz ISM band signals in wireless sensor transmitters. IC Role / Device Role / Timing Role: Passive RF-to-DC converter diode in peak detector circuit feeding ADC input. Use Value: 14 pF capacitance and 530 mV VF enable >−15 dBm sensitivity with <100 ns response time. |
Use Scenario: Dual-battery redundancy path in portable medical monitors with 3.7 V Li-ion cells. IC Role / Device Role / Timing Role: Reverse-polarity protection and automatic source selection diode. Use Value: 300 mA rating and 530 mV VF limit voltage drop to <200 mV, preserving system uptime during battery switchover. |
| DC-DC Converter Snubber | ESD-Sensitive Analog Input Protection |
Use Scenario: Clamp diode across synchronous rectifier MOSFET in 1 MHz buck converter. IC Role / Device Role / Timing Role: Fast-recovery snubber limiting voltage overshoot during turn-off transitions. Use Value: Negligible reverse recovery eliminates ringback spikes, reducing EMI filter component count by 30%. |
Use Scenario: Input protection for 24-bit delta-sigma ADC in precision weigh scale front-end. IC Role / Device Role / Timing Role: Low-leakage shunt clamp limiting overvoltage to ±0.5 V beyond rail. Use Value: 0.65 µA leakage at 25 V ensures <1 LSB error contribution in 10 V full-scale measurement range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NSR0330HT1G | Same 30 V VRRM, but SOD-323 package (Rth(j-a) = 550 °C/W); 330 mV VF @ 10 mA, 550 mV @ 300 mA. | Higher thermal conductivity allows higher average current in same PCB area; larger footprint limits ultra-dense layouts. | Select when thermal budget dominates board area constraints, especially in industrial power supplies. |
| RB520S-30T1G | 30 V VRRM, SOD-523 package (Rth(j-a) = 600 °C/W); 370 mV VF @ 10 mA, 520 mV @ 300 mA; 10 pF Cj @ 1 V. | Lower capacitance improves RF bandwidth but slightly higher leakage (1 µA @ 25 V) affects precision analog use. | Select for 2.4 GHz BLE receiver detectors where sub-10 pF capacitance outweighs leakage sensitivity. |
Compared with NSR0330HT1G and RB520S-30T1G, BAT30LFILM offers the smallest footprint (SOD-923) and lowest leakage at 25 V, making it optimal for miniaturized battery-powered systems where leakage-induced drift and board area are primary constraints.
Availability
BAT30LFILM is available at Aetrix Electronics and suitable for RF detection, low-voltage OR'ing, and DC-DC snubbing applications requiring stable component supply and consistent SOD-923 packaging across production lots.
Supply support for BAT30LFILM 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 analog, microcontroller, power, and sensor solutions for industrial, automotive, 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 and low-power applications.
FAQ
What is the maximum reverse voltage the BAT30LFILM can withstand?
The BAT30LFILM has a repetitive peak reverse voltage (VRRM) rating of 30 V, verified per Table 2 of ST's Doc ID 12564 Rev 3. This value is absolute-exceeding it risks irreversible avalanche breakdown even for short-duration transients. Derating to 24 V is recommended for reliability in automotive or industrial surge environments.
Does BAT30LFILM support reflow soldering per JEDEC J-STD-020?
Yes. The BAT30LFILM uses a lead-free, RoHS-compliant SOD-923 package qualified for standard Pb-free reflow profiles, with maximum soldering temperature of 260 °C for 10 seconds (Table 2). Its epoxy meets UL94 V0 flammability rating, and thermal profile validation is documented in ST's ECOPACK® compliance reports.
How does the 14 pF junction capacitance affect RF detector performance?
At 1 V reverse bias, the 14 pF capacitance sets the upper frequency limit for efficient envelope detection: for a 50 Ω source, the −3 dB cutoff is ~227 MHz. Measured data in Figure 12 confirms capacitance drops to 6 pF at 10 V, enabling broadband tuning in variable-bias detector topologies without external compensation.
Is BAT30LFILM suitable for bidirectional ESD protection?
No. As a unidirectional Schottky diode, BAT30LFILM only clamps positive transients to VCC or negative transients to GND-not both simultaneously. For bidirectional protection, ST recommends dedicated ESD arrays like SM712 or USBLC6-2SC6. BAT30LFILM's 0.65 µA leakage at 25 V also makes it unsuitable as a primary ESD shunt due to standby current concerns.
BAT30LFILM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- SOD-923
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io):
- 300mA
- 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
- Capacitance @ Vr, F:
- 22pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-923
- Operating Temperature - Junction:
- 150°C (Max)
BAT30LFILM FAQ
1.How can I place an order for BAT30LFILM through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT30LFILM 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 BAT30LFILM reliable?
The price and inventory of BAT30LFILM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT30LFILM is usually 5 days.
3.What payment methods are accepted for BAT30LFILM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT30LFILM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT30LFILM?
BAT30LFILM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT30LFILM 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 BAT30LFILM?
For technical support, including BAT30LFILM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT30LFILM requirements.
6.How does Aetrix verify that BAT30LFILM is sourced from the original manufacturer or authorized distributors?
All BAT30LFILM 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 BAT30LFILM meets industry standards.
7.What is the process for return or replacement of BAT30LFILM?
All BAT30LFILM units undergo pre-shipment inspection (PSI). If there is an issue with BAT30LFILM, 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 BAT30LFILM part is unused and in its original packaging.
Return procedure for BAT30LFILM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAT30LFILM Tags
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