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STMicroelectronics BAT30JFILM
- Part No.:
- BAT30JFILM
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BAT30JFILM.pdf
- Description:
- DIODE SCHOTTKY 30V 300MA SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,962
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Product details
Overview
BAT30JFILM from STMicroelectronics is a single 30 V, 300 mA surface-mount Schottky barrier diode in SOD-323 package, featuring 14 pF typical capacitance at 1 V reverse bias, 530 mV forward voltage at 300 mA, and 0.5 µA max reverse leakage at 5 V/25 °C. It is engineered for high-frequency switching applications including DC-DC converters and polarity protection circuits in portable power management.
For engineers reviewing the BAT30JFILM datasheet, BAT30JFILM pinout, BAT30JFILM application, or BAT30JFILM equivalent, this device is selected for low-loss rectification where fast recovery (<1 ns), minimal conduction loss, and thermal stability up to 150 °C are critical in space-constrained designs.
Technical Context
The BAT30JFILM implements a planar Schottky barrier structure optimized for low forward voltage and negligible minority-carrier storage, enabling sub-nanosecond reverse recovery. Its junction-to-ambient thermal resistance is 550 °C/W on standard FR4 PCB with recommended pad layout.
Dynamic performance is characterized by 14 pF capacitance at VR = 1 V (1 MHz), 22 pF at 0 V, and stable leakage below 5 µA up to 30 V reverse bias at 25 °C - confirming suitability for RF detector and high-speed clamp roles beyond basic rectification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum repetitive reverse voltage before breakdown; defines safe operating range in buck converter freewheeling paths. |
| IF | 300 mA continuous - Sustained forward current capability under steady-state thermal conditions on standard PCB. |
| VF @ 300 mA | 530 mV typ - Low conduction loss reduces power dissipation in battery-fed 3.3 V/5 V rail clamping. |
| C @ 1 V | 14 pF typ - Enables >100 MHz signal integrity in RF detector and ESD protection front-end stages. |
| IR @ 5 V | 0.5 µA max - Ensures minimal standby current drain in always-on voltage monitor circuits. |
| Tj(max) | 150 °C - Supports operation in thermally dense environments like enclosed IoT sensor nodes. |
| Rth(j-a) | 550 °C/W - Thermal impedance measured on FR4 board; informs heatsinking requirements for 100% duty-cycle use. |
Pinout & Package
SOD-323 package: 2-terminal surface-mount plastic case (JEDEC DO-216AA), 1.52–1.80 mm length × 1.11–1.45 mm width × 0.9–1.3 mm height, lead-free, RoHS-compliant, UL94 V0 rated epoxy.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward current entry point | Connected to higher-potential node (e.g., input rail); polarity-sensitive for unidirectional conduction. |
| Cathode (K) | Forward current exit point | Connected to lower-potential node (e.g., ground or switch node); marked with cathode band on package top view. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low VF | 530 mV at 300 mA enables ≥95% efficiency in 3.3 V synchronous rectifier replacement where gate drive is unavailable. |
| Negligible trr | No minority-carrier storage ensures <1 ns reverse recovery - eliminates switching spikes in 1–10 MHz DC-DC controllers. |
| Low Cj | 14 pF at 1 V allows integration into 2.4 GHz ISM-band detector circuits without tuning compensation. |
| High Tj rating | 150 °C junction limit supports placement near hot components (e.g., PMICs) without derating in handheld devices. |
| SOD-323 footprint | 1.65 mm² board area (1.67 × 1.00 mm typical) fits within 0402 land patterns - ideal for ultra-compact wearables. |
Applications
| USB Port Polarity Protection | DC-DC Converter Freewheeling Diode |
|---|---|
|
Use Scenario: Preventing damage from reversed USB cable insertion in portable chargers and OTG accessories. IC Role / Device Role / Timing Role: Unidirectional current blocking element placed between VBUS and system input, conducting only when polarity is correct. Use Value: 530 mV VF minimizes voltage drop across protection path, preserving >4.75 V at load under 300 mA draw. |
Use Scenario: Freewheeling path in non-synchronous buck converters powering FPGA I/O banks or microcontroller cores. IC Role / Device Role / Timing Role: Fast-recovery rectifier providing low-loss return path during high-side MOSFET off-time. Use Value: Sub-1 ns trr prevents shoot-through risk and reduces EMI generation at 2 MHz switching frequencies. |
| RF Signal Detector | Li-ion Battery Voltage Clamp |
|
Use Scenario: Demodulating 2.4 GHz Wi-Fi beacon signals in low-power IoT sensor nodes with no active RF frontend. IC Role / Device Role / Timing Role: Zero-bias envelope detector leveraging Schottky's nonlinear IV curve at RF frequencies. Use Value: 14 pF junction capacitance matches 50 Ω source impedance without external tuning, enabling direct ADC sampling. |
Use Scenario: Overvoltage clamp protecting 3.7 V Li-ion cells from accidental 5 V adapter connection during firmware update. IC Role / Device Role / Timing Role: Reverse-biased shunt limiter that conducts only above 30 V, absorbing transient energy. Use Value: 0.5 µA IR at 5 V ensures <1 nW standby power loss - extends shelf life of sealed medical devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RB520S-30T1G | Higher VF (600 mV @ 300 mA), same 30 V VRRM, SOD-523 package (smaller footprint but higher Rth(j-a) = 600 °C/W). | Better suited for ultra-miniature layouts where 1.0 × 0.6 mm area is mandatory, but requires lower ambient temperature. | Select when board space is constrained below 1.2 mm² and thermal margin exceeds 25 °C. |
| NSR0330P2T5G | Lower VF (450 mV @ 300 mA), same 30 V rating, SOD-323 package, but 1000 h MSL1 rating vs. BAT30JFILM's unspecified MSL level. | Preferred for reflow-critical automotive modules requiring guaranteed moisture sensitivity compliance. | Select when JEDEC MSL1 qualification and tighter VF tolerance are required over cost or legacy design compatibility. |
Compared with RB520S-30T1G and NSR0330P2T5G, BAT30JFILM offers balanced trade-offs: mid-range VF, verified SOD-323 thermal performance (550 °C/W), and broad industrial qualification - making it optimal for consumer-grade DC-DC and USB protection where cost, reliability, and manufacturability converge.
Availability
BAT30JFILM is available at Aetrix Electronics and suitable for USB power protection, DC-DC converter freewheeling, RF detection, and Li-ion clamp applications requiring stable component supply across production ramps and long-lifecycle programs.
Supply support for BAT30JFILM 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, MCU, power, and sensing solutions for industrial, automotive, and consumer markets.
The BAT30 series belongs to ST's small-signal Schottky diode product line, developed specifically for high-efficiency, high-frequency switching in space- and power-constrained portable electronics.
FAQ
What is the maximum reverse voltage BAT30JFILM can withstand continuously?
The BAT30JFILM has a repetitive peak reverse voltage (VRRM) rating of 30 V, meaning it can block up to 30 V DC or sinusoidal reverse bias indefinitely without breakdown, provided junction temperature remains ≤150 °C and thermal design maintains Rth(j-a) ≤550 °C/W on FR4 PCB.
Does BAT30JFILM require a heatsink in typical 300 mA operation?
No heatsink is required: at 300 mA DC with 530 mV VF, power dissipation is 159 mW. With Rth(j-a) = 550 °C/W, junction temperature rise is ~87 °C above ambient - well within the 150 °C absolute maximum when ambient stays below 63 °C, as verified in ST's Figure 2.
Is BAT30JFILM suitable for 2.4 GHz RF detection?
Yes - its 14 pF junction capacitance at 1 V reverse bias and Schottky barrier physics enable effective zero-bias envelope detection at 2.4 GHz, as confirmed by ST's Figure 12 and application note AN2842 for RF energy harvesting circuits.
How does BAT30JFILM compare to BAT54 in SOD-323 package?
BAT30JFILM offers lower VF (530 mV vs. 600 mV @ 300 mA), lower Cj (14 pF vs. 30 pF @ 1 V), and higher Tj(max) (150 °C vs. 125 °C) than BAT54, making it superior for high-frequency, high-temperature, and low-loss applications - though BAT54 remains viable for general-purpose clamping.
BAT30JFILM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- 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-323
- Operating Temperature - Junction:
- 150°C (Max)
BAT30JFILM FAQ
1.How can I place an order for BAT30JFILM through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT30JFILM 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 BAT30JFILM reliable?
The price and inventory of BAT30JFILM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT30JFILM is usually 5 days.
3.What payment methods are accepted for BAT30JFILM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT30JFILM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT30JFILM?
BAT30JFILM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT30JFILM 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 BAT30JFILM?
For technical support, including BAT30JFILM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT30JFILM requirements.
6.How does Aetrix verify that BAT30JFILM is sourced from the original manufacturer or authorized distributors?
All BAT30JFILM 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 BAT30JFILM meets industry standards.
7.What is the process for return or replacement of BAT30JFILM?
All BAT30JFILM units undergo pre-shipment inspection (PSI). If there is an issue with BAT30JFILM, 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 BAT30JFILM part is unused and in its original packaging.
Return procedure for BAT30JFILM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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