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STMicroelectronics LNBTVS3-220
- Part No.:
- LNBTVS3-220
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
LNBTVS3-220.pdf
- Description:
- TVS DIODE 20VWM 35VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:4,950
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Product details
Overview
LNBTVS3-220 from STMicroelectronics is a unidirectional transient voltage suppressor diode designed for lightning surge protection of LNB (low-noise block) power supplies in satellite set-top box receivers. It delivers 3 kV (8/20 µs) peak pulse protection, features a 22 V breakdown voltage (VBR = 22–24.2 V), clamps at 33.2 V @ 45 A, and exhibits low forward voltage (VF = 1.2 V @ 3 A) for minimal insertion loss in DC bias paths.
For engineers reviewing the LNBTVS3-220 datasheet, LNBTVS3-220 pinout, LNBTVS3-220 application, or LNBTVS3-220 equivalent, key selection criteria include IEC 61000-4-5 compliance, DO-201 axial package compatibility, 3 kW peak pulse power rating, and direct fit with ST's LNBP20/LNBP11x LNB regulators.
Technical Context
The LNBTVS3-220 operates as a unidirectional clamping device placed in series with the LNB DC supply line (typically +13/18 V), absorbing fast-rising lightning-induced surges before they reach sensitive downstream regulators. Its low clamping factor (VCL/VBR ≈ 1.51) and fast response time ensure effective protection without overvoltage stress on connected ICs.
It is thermally rated for Tj ≤ 150 °C, with junction-to-leads thermal resistance Rth(j-l) = 20 °C/W in DO-201 package, enabling reliable operation under repeated surge events when mounted on standard PCB copper areas. Stand-off voltage (VRM) is 20 V, ensuring no conduction during normal LNB bias operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min–max) | 22 V – 24.2 V: Ensures reliable turn-on above nominal LNB supply (13/18 V) while avoiding false triggering. |
| VCL @ IPP | 33.2 V @ 45 A (10/1000 µs): Limits downstream voltage to safe level during 3 kV surge event per IEC 61000-4-5. |
| PPP | 3 kW: Sustains single high-energy lightning transients without failure in DO-201 package. |
| VF @ IF | 1.2 V @ 3 A: Minimizes DC voltage drop and power loss in continuous LNB bias path. |
| VRM | 20 V: Blocks leakage current during normal operation; compatible with 13/18 V LNB supply rails. |
| IPP (8/20 µs) | 250 A: Supports full 3 kV surge test with 12 Ω source impedance per IEC 61000-4-5. |
Pinout & Package
Package: DO-201 axial leaded package (glass-passivated, epoxy UL 94 V0 compliant). Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | DC input side (LNB supply source) | Connected to upstream DC source (e.g., LNB power controller output); carries full bias current and surge current. |
| Cathode | DC output side (LNB regulator input) | Delivers clamped, protected DC to LNBP20/LNBP11x; polarity ensures unidirectional clamping toward ground. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional clamping | Enables series placement in positive DC supply rail without reverse-bias leakage issues during normal operation. |
| Low VF (1.2 V @ 3 A) | Reduces power dissipation and voltage headroom loss in 13/18 V LNB bias chains, preserving regulation margin. |
| 3 kV surge rating (8/20 µs) | Meets IEC/FCC requirements for satellite receiver front-end lightning immunity without external circuitry. |
| DO-201 mechanical compatibility | Supports automated axial insertion and wave soldering; footprint matches industry-standard LNB power supply layouts. |
Applications
| Satellite Set-Top Box LNB Power Input | LNB Voltage Regulator Protection |
|---|---|
Use Scenario: DC power delivery from IRD (integrated receiver-decoder) to outdoor LNB unit via coaxial cable, exposed to induced lightning surges. IC Role / Device Role / Timing Role: Series-connected TVS diode providing primary overvoltage clamping on +13/+18 V supply line before LNBP20 regulator. Use Value: Prevents catastrophic failure of LNBP20 and downstream LNB circuitry during 3 kV surge events, maintaining system reliability. | Use Scenario: Protection of ST's LNBP11x family of LNB power controllers against ESD and lightning transients entering via long coaxial feed lines. IC Role / Device Role / Timing Role: Front-end transient suppressor placed directly at LNBP11x VIN pin to limit voltage excursion during surge. Use Value: Eliminates need for additional RC snubbers or secondary protection, reducing BOM count and board space. |
| Multi-Switch LNB Distribution Systems | Digital Satellite Receiver Power Management |
Use Scenario: Centralized LNB power distribution across multiple satellite inputs (e.g., Quad-LNB setups) where surge coupling risk increases. IC Role / Device Role / Timing Role: Per-channel TVS on each regulated output rail to isolate surge propagation between LNB branches. Use Value: Enables fault containment-surge on one branch does not compromise voltage stability on others. | Use Scenario: Integrated power management in compact digital satellite receivers requiring high-reliability DC supply integrity. IC Role / Device Role / Timing Role: Primary surge suppression element in DC-DC converter input stage feeding LNB bias circuitry. Use Value: Maintains stable 18 V output under surge conditions, preventing brownout resets and signal dropout during storms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LNBTVS3-220U | SMB surface-mount package (vs. DO-201 axial); identical electrical specs (VBR, VCL, PPP). | Designed for automated SMT assembly; requires reflow-compatible layout and lacks axial lead retention. | Select for high-volume PCB production with SMT lines; avoid if through-hole mounting or mechanical strain relief is required. |
| SMCJ22A | Higher PPP (1500 W vs. 3000 W), higher VCL (35.5 V @ 42.8 A), DO-214AB package. | General-purpose TVS; not optimized for LNB-specific VF or regulator co-design. | Use only if LNBTVS3-220 is unavailable; verify clamping margin with LNBP20's absolute max rating (36 V). |
Compared with LNBTVS3-220U, the DO-201 version offers superior mechanical robustness for coax-fed LNB interfaces, while SMCJ22A trades lower clamping performance and no LNB regulator co-optimization for broader distributor availability.
Availability
LNBTVS3-220 is available at Aetrix Electronics and suitable for satellite receiver manufacturing, LNB module assembly, and broadcast equipment repair requiring stable component supply and legacy DO-201 form-factor compatibility.
Supply support for LNBTVS3-220 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.
LNBTVS3-220 belongs to ST's dedicated LNB protection product line, engineered specifically to meet IEC 61000-4-5 surge immunity requirements in satellite TV power systems while optimizing compatibility with ST's own LNBP-series regulators.
FAQ
What is the maximum continuous DC current the LNBTVS3-220 can handle?
The LNBTVS3-220 is not rated for continuous forward current beyond its specified IF = 3 A test condition. Its design intent is transient suppression-not steady-state conduction. For sustained 3 A DC bias, thermal limits (Rth(j-l) = 20 °C/W, Tj ≤ 150 °C) require adequate PCB copper area; derating is advised above 1 A ambient temperature > 75 °C.
Does LNBTVS3-220 meet RoHS and REACH requirements?
Yes-LNBTVS3-220 is supplied in ST's ECOPACK® package with lead-free second-level interconnect, compliant with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. The DO-201 package carries the ECOPACK marking on both device body and inner box label per JESD97.
Can LNBTVS3-220 be used in bidirectional protection configurations?
No-LNBTVS3-220 is strictly unidirectional. Its electrical characteristics (VF, VBR, clamping behavior) are specified only for forward-biased operation. Bidirectional protection requires symmetrical devices like SMBJ22A; using LNBTVS3-220 in reverse orientation risks premature breakdown or insufficient clamping.
How does LNBTVS3-220 interface with ST's LNBP20 regulator?
LNBTVS3-220 connects in series between the LNBP20's VIN pin and the coaxial cable feed, with cathode toward LNBP20. Its 20 V stand-off voltage ensures zero conduction during normal 13/18 V operation, while its 33.2 V clamping protects LNBP20's 36 V absolute maximum rating during 3 kV surges per Table 4 in ST's application documentation.
LNBTVS3-220 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- LNBTVS
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 20V
- Voltage - Breakdown (Min):
- 22V
- Voltage - Clamping (Max) @ Ipp:
- 35V
- Current - Peak Pulse (10/1000µs):
- 250A (8/20µs)
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
LNBTVS3-220 FAQ
1.How can I place an order for LNBTVS3-220 through Aetrix?
Please submit a Request for Quotation (RFQ) for LNBTVS3-220 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 LNBTVS3-220 reliable?
The price and inventory of LNBTVS3-220 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LNBTVS3-220 is usually 5 days.
3.What payment methods are accepted for LNBTVS3-220?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LNBTVS3-220 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LNBTVS3-220?
LNBTVS3-220 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LNBTVS3-220 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 LNBTVS3-220?
For technical support, including LNBTVS3-220 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LNBTVS3-220 requirements.
6.How does Aetrix verify that LNBTVS3-220 is sourced from the original manufacturer or authorized distributors?
All LNBTVS3-220 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 LNBTVS3-220 meets industry standards.
7.What is the process for return or replacement of LNBTVS3-220?
All LNBTVS3-220 units undergo pre-shipment inspection (PSI). If there is an issue with LNBTVS3-220, 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 LNBTVS3-220 part is unused and in its original packaging.
Return procedure for LNBTVS3-220:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LNBTVS3-220 Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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