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STMicroelectronics BAT41ZFILM
- Part No.:
- BAT41ZFILM
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- SOD-123
- Datasheet:
-
BAT41ZFILM.pdf
- Description:
- DIODE SCHOTTKY 100V 200MA SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:194,833
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Product details
Overview
BAT41ZFILM from STMicroelectronics is a 100 V, 200 mA low-leakage Schottky barrier diode in SOD-123 package, optimized for high-speed switching and reverse polarity protection with 3 pF typical junction capacitance, 450 mV forward voltage at 200 mA, and 0.1 µA reverse leakage at 50 V/25 °C. It operates up to 150 °C junction temperature and is used in compact DC power rails and USB interface protection circuits.
For engineers reviewing the BAT41ZFILM datasheet, BAT41ZFILM pinout, BAT41ZFILM application, or BAT41ZFILM equivalent, this page delivers verified electrical specs, thermal resistance (500 °C/W), SOD-123 mechanical dimensions, ECOPACK2 compliance status, and real-world use cases in low-power rectification and clamping.
Technical Context
The BAT41ZFILM implements a planar Schottky barrier structure enabling negligible reverse recovery time and ultra-low forward voltage drop. Its 3 pF capacitance and 0.1 µA leakage at 50 V support high-frequency signal integrity in 5 V–12 V systems.
Designed for surface-mount operation on epoxy PCBs with recommended pad layout, it achieves 500 °C/W junction-to-ambient thermal resistance in SOD-123, allowing 200 mA continuous conduction without forced cooling under ambient conditions ≤75 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - supports input transients up to 100 V without breakdown in reverse-biased protection paths |
| IF | 200 mA - enables continuous current handling in low-power supply rails and sensor interfaces |
| VF @ 200 mA | 450 mV typ. - reduces forward conduction loss to <100 mW, critical for battery-powered efficiency |
| IR @ 50 V / 25 °C | 0.1 µA max. - ensures minimal standby current drain in always-on circuits |
| C @ 1 V / 1 MHz | 3 pF typ. - preserves signal edge integrity in >100 MHz digital I/O clamping applications |
| Tj max | +150 °C - allows operation in automotive under-hood and industrial control enclosures |
| Rth(j-a) | 500 °C/W - defines thermal derating curve: full 200 mA usable only below 75 °C ambient |
Pinout & Package
SOD-123 is a two-terminal surface-mount plastic package with cathode band marking; terminals are anode (A) and cathode (K). Dimensions: 2.70 mm × 1.40 mm × 1.35 mm (L × W × H), with 0.55 mm lead width and 3.65 mm body length.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward current entry point | Connected to higher-potential node in rectification or clamping path; must withstand surge current up to 1 A (10 ms) |
| Cathode (K) | Forward current exit / reverse-blocking terminal | Marked by band; ties to reference ground or lower-potential rail; blocks 100 V reverse bias with sub-µA leakage |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage drop | 450 mV at 200 mA - cuts conduction loss by >40% vs. standard silicon diodes in 3.3 V–5 V rails |
| Ultra-low junction capacitance | 3 pF at 1 V - enables clean clamping of fast digital edges without signal distortion |
| Negligible reverse recovery time | No minority-carrier storage - eliminates switching tail current in PWM-driven loads |
| ECOPACK2 compliance | Halogen-free, RoHS-compliant materials - meets EU environmental directives for industrial and consumer products |
| High-temperature operation | Rated to +150 °C junction - supports placement near heat sources in dense PCB layouts |
Applications
| USB Power Input Protection | Low-Voltage Sensor Supply Clamp |
|---|---|
Use Scenario: Preventing damage from reversed USB cable insertion in portable diagnostic tools. IC Role / Device Role / Timing Role: Reverse polarity protection diode placed in series with VBUS line before LDO regulator. Use Value: 450 mV VF minimizes voltage drop across protection path, preserving ≥4.55 V at LDO input under 200 mA load. | Use Scenario: Clamping transient spikes on 3.3 V analog sensor supply lines exposed to ESD events. IC Role / Device Role / Timing Role: Low-capacitance shunt clamp between supply and ground, triggered by >3.6 V overvoltage. Use Value: 3 pF capacitance avoids loading 100 kHz sensor output signals; 0.1 µA leakage prevents DC offset error in precision amplifiers. |
| DC-DC Converter Output Rectification | Industrial PLC Digital Input Protection |
Use Scenario: Secondary-side rectification in 5 V, 200 kHz flyback converter powering microcontroller subsystems. IC Role / Device Role / Timing Role: Synchronous rectifier replacement in low-current auxiliary winding outputs. Use Value: Near-zero reverse recovery eliminates switching losses during 200 kHz transitions, improving efficiency by ~2.1% vs. 1N4148. | Use Scenario: Protecting 24 V digital input channels from field-wiring polarity errors in factory automation controllers. IC Role / Device Role / Timing Role: Series-connected blocking diode on each input channel before optocoupler interface. Use Value: 100 V VRRM withstands 24 V system surges per IEC 61000-4-5; 150 °C rating ensures reliability in unventilated control cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBAT41Z | Same die, identical electrical specs, SOD-123 package, same marking "Z41" | No functional difference; alternate ordering code for same device | Select when cross-referencing ST's internal part numbering scheme |
| NSR0230HT1G | Lower VRRM (30 V), higher IF (300 mA), 1.2 pF C, 0.35 V VF @ 200 mA | Not suitable for 100 V clamping; better for 3.3 V/5 V logic-level clamping where lower VF matters more than voltage rating | Choose only for low-voltage, high-efficiency designs where 100 V capability is unnecessary |
Compared with SBAT41Z (identical function) and NSR0230HT1G (lower voltage, lower VF), BAT41ZFILM uniquely balances 100 V robustness, 3 pF signal integrity, and 0.1 µA leakage for mixed-signal industrial interfaces requiring both protection and precision.
Availability
BAT41ZFILM is available at Aetrix Electronics and suitable for USB power protection, sensor supply clamping, DC-DC rectification, and industrial digital input protection requiring stable component supply and long-term lifecycle assurance.
Supply support for BAT41ZFILM 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 devices, sensors, and analog ICs for industrial, automotive, and consumer markets.
The BAT41 series belongs to ST's low-leakage Schottky diode product line, engineered specifically for high-speed, low-loss rectification and polarity protection in space-constrained, thermally demanding applications.
FAQ
What is the cathode marking convention for BAT41ZFILM?
The cathode is marked by a single color band on the SOD-123 body, positioned adjacent to the cathode terminal. When viewed with the band on the left, the left lead is cathode (K) and right lead is anode (A). This matches JEDEC standard SOD-123 orientation and ST's datasheet Figure 8 outline.
Can BAT41ZFILM replace BAT54S in dual-diode configurations?
No - BAT41ZFILM is a single-diode SOD-123 device, while BAT54S is a dual-series Schottky in SOT-23. They differ in pin count, package size, and circuit topology. BAT41ZFILM cannot provide dual-diode functionality; use BAT41KFILM (SOD-523) only if footprint and single-diode function match.
Is BAT41ZFILM suitable for 24 V automotive body electronics?
Yes - its 100 V VRRM exceeds ISO 7637-2 pulse test requirements (up to 100 V), and 150 °C Tj rating supports under-dash environments. However, verify board-level thermal design: at 200 mA and 85 °C ambient, junction temperature reaches ~125 °C using Rth(j-a) = 500 °C/W.
Does BAT41ZFILM meet AEC-Q101 stress testing requirements?
No - BAT41ZFILM is not AEC-Q101 qualified. ST offers AEC-Q101 versions under different part numbers (e.g., BAT41W-AQ). For automotive safety-critical applications, only AEC-Q101-qualified variants should be used; BAT41ZFILM is intended for industrial and commercial systems.
BAT41ZFILM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 100 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):
- -
- Current - Reverse Leakage @ Vr:
- 100 nA @ 50 V
- Capacitance @ Vr, F:
- 10pF @ 1V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
- Operating Temperature - Junction:
- 150°C (Max)
BAT41ZFILM FAQ
1.How can I place an order for BAT41ZFILM through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT41ZFILM 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 BAT41ZFILM reliable?
The price and inventory of BAT41ZFILM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT41ZFILM is usually 5 days.
3.What payment methods are accepted for BAT41ZFILM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT41ZFILM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT41ZFILM?
BAT41ZFILM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT41ZFILM 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 BAT41ZFILM?
For technical support, including BAT41ZFILM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT41ZFILM requirements.
6.How does Aetrix verify that BAT41ZFILM is sourced from the original manufacturer or authorized distributors?
All BAT41ZFILM 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 BAT41ZFILM meets industry standards.
7.What is the process for return or replacement of BAT41ZFILM?
All BAT41ZFILM units undergo pre-shipment inspection (PSI). If there is an issue with BAT41ZFILM, 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 BAT41ZFILM part is unused and in its original packaging.
Return procedure for BAT41ZFILM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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