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STMicroelectronics BAR46FILM
- Part No.:
- BAR46FILM
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAR46FILM.pdf
- Description:
- DIODE SCHOTTKY 100V 150MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:24,545
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Product details
Overview
BAR46FILM from STMicroelectronics is a high-voltage Schottky rectifier diode in SOT-23 package, rated for 100 V repetitive peak reverse voltage (VRRM), 150 mA continuous forward current (IF), and 230 mW power dissipation at 25°C ambient. It delivers low forward voltage drop (0.45 V at 10 mA) and negligible switching losses, specifically designed for SLIC protection during telephone line card insertion.
For engineers reviewing the BAR46FILM datasheet, BAR46FILM pinout, BAR46FILM application, or BAR46FILM equivalent, key selection criteria include its 100 V reverse blocking capability, 0.45 V forward voltage at 10 mA, 10 pF junction capacitance at 0 V, 500 °C/W junction-to-ambient thermal resistance on epoxy board, and suitability for telecom line interface surge protection circuits.
Technical Context
This Schottky diode operates with minimal conduction and switching losses due to its metal–semiconductor junction. Its 100 V VRRM rating enables use in high-transient telecom environments, while its 150 mA IF and 230 mW Ptot support sustained operation under SLIC bias conditions.
Thermal performance is defined by Rth(j-a) = 500 °C/W on an epoxy PCB with recommended pad layout, and maximum junction temperature is rated at 150 °C. Reverse leakage remains below 5 µA at 60 °C and 10 V reverse bias, ensuring stable clamping behavior during card hot-plug events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Withstands repetitive 100 V reverse transients during SLIC line card insertion without breakdown |
| IF | 150 mA - Supports continuous forward conduction in telecom line interface protection paths |
| VF @ 10 mA | 0.45 V - Enables low-loss clamping with minimal voltage overhead in series protection configurations |
| IR @ 10 V, 60°C | 5 µA - Ensures stable reverse blocking and low standby power in always-on line interfaces |
| C @ 0 V, 1 MHz | 10 pF - Minimizes signal distortion and capacitive loading on high-speed telecom signaling lines |
| Rth(j-a) | 500 °C/W - Requires careful PCB copper area design to maintain Tj ≤ 150°C under full load |
| Tj max | 150 °C - Defines absolute upper limit for junction temperature during transient overvoltage events |
Pinout & Package
SOT-23 plastic surface-mount package with standard 3-pin configuration; cathode marked by band on package top. Mounting requires UL94 V0-compliant epoxy board and recommended pad layout per STMicroelectronics mechanical drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry point | Connected to SLIC output or line side for clamping to ground or reference rail |
| Cathode (Pin 2) | Forward current exit / reverse blocking terminal | Connected to protected circuit node; reverse voltage applied here during transient suppression |
| NC / Heat sink (Pin 3) | No internal connection | Not electrically connected; may be used as thermal relief pad but must not be tied to active nodes |
Key Features
| Feature | Design Value |
|---|---|
| High VRRM | 100 V reverse blocking supports telecom line surge standards including GR-1089 and ITU-T K.20 |
| Low VF | 0.45 V at 10 mA reduces power loss and self-heating during sustained fault conditions |
| Negligible switching loss | Schottky architecture eliminates minority-carrier storage delay, enabling fast response to line transients |
| Small footprint | SOT-23 package allows dense placement near SLIC ICs and line transformers without compromising layout |
| UL94 V0 epoxy | Flame-retardant housing meets safety requirements for telecom infrastructure equipment |
Applications
| SLIC Protection | Telephone Line Interface |
|---|---|
Use Scenario: Protecting subscriber line interface circuits during hot insertion of line cards into central office shelves. IC Role / Device Role / Timing Role: Bidirectional transient voltage clamp placed between SLIC output and line transformer primary. Use Value: Prevents latch-up and permanent damage to SLIC ICs by shunting >100 V transients within nanoseconds. | Use Scenario: Providing overvoltage protection on analog telephone line pairs (tip/ring) in VoIP gateways and PBX systems. IC Role / Device Role / Timing Role: Series-connected Schottky diode in line feed path to limit reverse polarity and surge energy. Use Value: Maintains <5 µA leakage at 10 V, preserving DC loop integrity while clamping fast transients up to 100 V. |
| DSL Line Protection | ISDN BRI Interface |
Use Scenario: Guarding ADSL/VDSL line drivers against lightning-induced surges and AC ring voltage spikes. IC Role / Device Role / Timing Role: High-speed clamping element placed before line driver amplifier input stage. Use Value: 10 pF capacitance avoids signal degradation at frequencies up to 2.2 MHz (ADSL2+). | Use Scenario: Protecting ISDN basic rate interface (BRI) U-interface transceivers from accidental polarity reversal and induced transients. IC Role / Device Role / Timing Role: Polarity-correcting and surge-limiting diode in the 2B+D physical layer path. Use Value: 0.25 V VF at 0.1 mA ensures minimal DC offset in 120 Ω balanced line termination. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NSR02100MXV6T1G | VRRM = 100 V, VF = 0.45 V @ 10 mA, but C = 20 pF @ 0 V - double the junction capacitance | Higher capacitance limits use in >1 MHz DSL applications where signal integrity is critical | Prefer BAR46FILM when low-capacitance clamping is required for broadband line interfaces |
| BAT54C | VRRM = 30 V only - insufficient for SLIC-level transient suppression | Restricted to low-voltage logic or USB port protection; not suitable for telecom line-side use | BAR46FILM is mandatory for 100 V-rated telecom protection; BAT54C is incompatible |
Compared with NSR02100MXV6T1G and BAT54C, BAR46FILM uniquely balances 100 V blocking, 10 pF capacitance, and 0.45 V forward drop-making it the only viable choice for SLIC protection where both high-voltage tolerance and broadband signal fidelity are required.
Availability
BAR46FILM is available at Aetrix Electronics and suitable for SLIC protection, telephone line interface, DSL line protection, and ISDN BRI interface applications requiring stable component supply across industrial telecom equipment lifecycles.
Supply support for BAR46FILM 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, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and communications markets.
BAR46FILM belongs to ST's small-signal Schottky diode product line, engineered specifically for high-reliability telecom line protection where low VF, high VRRM, and minimal capacitance are simultaneously required.
FAQ
What is the maximum reverse voltage BAR46FILM can withstand continuously?
BAR46FILM has a repetitive peak reverse voltage (VRRM) rating of 100 V. This is the maximum instantaneous reverse voltage the device can block repeatedly without breakdown under normal operating conditions, validated per IEC 61000-4-5 surge test profiles relevant to telecom line interfaces.
Can BAR46FILM be used in place of a standard silicon rectifier in SLIC circuits?
Yes - BAR46FILM replaces standard silicon rectifiers in SLIC protection due to its Schottky construction: lower forward voltage (0.45 V vs. ~0.7 V), faster switching, and no reverse recovery charge. These traits prevent false triggering and thermal runaway during rapid line transients.
Is BAR46FILM RoHS compliant and halogen-free?
Yes - BAR46FILM conforms to RoHS Directive 2011/65/EU and is manufactured using halogen-free epoxy molding compound meeting IEC 61249-2-21 requirements, as confirmed in STMicroelectronics' official material declarations dated 2022.
What is the thermal resistance when mounted on a standard FR-4 PCB?
Rth(j-a) is specified as 500 °C/W when mounted on an epoxy board (FR-4) with STMicroelectronics' recommended pad layout - 1.9 mm × 1.1 mm copper pads per pin, 0.9 mm solder mask opening, and no internal ground plane coupling beneath the device.
BAR46FILM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 150mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 250 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 5 µA @ 75 V
- Capacitance @ Vr, F:
- 10pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23
- Operating Temperature - Junction:
- 150°C (Max)
BAR46FILM FAQ
1.How can I place an order for BAR46FILM through Aetrix?
Please submit a Request for Quotation (RFQ) for BAR46FILM 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 BAR46FILM reliable?
The price and inventory of BAR46FILM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAR46FILM is usually 5 days.
3.What payment methods are accepted for BAR46FILM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAR46FILM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAR46FILM?
BAR46FILM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAR46FILM 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 BAR46FILM?
For technical support, including BAR46FILM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAR46FILM requirements.
6.How does Aetrix verify that BAR46FILM is sourced from the original manufacturer or authorized distributors?
All BAR46FILM 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 BAR46FILM meets industry standards.
7.What is the process for return or replacement of BAR46FILM?
All BAR46FILM units undergo pre-shipment inspection (PSI). If there is an issue with BAR46FILM, 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 BAR46FILM part is unused and in its original packaging.
Return procedure for BAR46FILM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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