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STMicroelectronics TPA220RL
- Part No.:
- TPA220RL
- Manufacturer:
- STMicroelectronics
- Category:
- Thyristors
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
TPA220RL.pdf
- Description:
- THYRISTOR 220V 150A DO-204AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,048
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Product details
Overview
TPA220RL from STMicroelectronics is a bidirectional Trisil™ thyristor surge protector in DO-15 package, designed for telecom line protection with 220 V standoff voltage, 293 V static breakover voltage, 12 mA minimum holding current, 50 A repetitive peak pulse current (10/1000 µs), and 25 pF capacitance at 50 V. It safeguards analog/digital xDSL/T1/E1 line cards against lightning surges per GR-1089 Core and ITU-T K20/K21.
For engineers reviewing the TPA220RL datasheet, TPA220RL pinout, TPA220RL application, or TPA220RL equivalent, key selection criteria include fail-safe short-circuit behavior under overvoltage, UL497B and UL94 V0 certification, compliance with FCC Part 68 lightning surge types A/B, and thermal resistance of 100 °C/W (junction-to-ambient) on recommended footprint.
Technical Context
This Trisil operates as a crowbar device: it remains high-impedance below 220 V, triggers at ≥293 V (static VBO), latches into low-impedance conduction until current drops below 12 mA (IH), and sustains 50 A surge pulses without degradation. Its bidirectional symmetry enables protection on AC-coupled telecom lines without polarity constraints.
Thermal design relies on DO-15's 100 °C/W junction-to-ambient resistance (with recommended PCB pad layout) and 60 °C/W junction-to-leads resistance (Llead = 10 mm). The device meets GR-1089 Core first-level (2500 V, 10/1000 µs, 500 A) when used with ≥20 Ω series resistor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage | 220 V - maximum continuous reverse voltage before leakage exceeds 2 µA; defines operating margin vs. line voltage. |
| Static Breakover Voltage | 293 V - guaranteed minimum voltage at which device triggers into conduction with 100 mA IBO; sets overvoltage trip threshold. |
| Holding Current | 12 mA min - minimum current required to maintain conduction after triggering; determines minimum load current needed for self-reset prevention. |
| Repetitive Peak Pulse Current | 50 A (10/1000 µs) - maximum surge current the device can withstand repeatedly without parameter shift; defines robustness against telecom lightning transients. |
| Capacitance | 25 pF @ 50 V - low signal-line loading for high-speed xDSL interfaces; ensures minimal insertion loss and crosstalk impact. |
| Leakage Current | 2 µA max @ 220 V - ultra-low standby power loss and negligible DC loading on protected lines. |
| Junction-to-Ambient Rth | 100 °C/W - thermal limit for PCB layout; requires ≥100 mm² copper pour (2 oz) to sustain 150 mA continuous on-state current. |
Pinout & Package
TPA220RL uses DO-15 axial-leaded package (JEDEC DO-15, dimensions: A = 6.05–6.75 mm, B = 2.95–3.53 mm, C = 26–31 mm, D = 0.71–0.88 mm). It has two terminals: Anode and Cathode, symmetrically interchangeable due to bidirectional structure.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | High-side surge path terminal | Connects to line side (e.g., tip/ring of telephone line); carries full surge current during crowbar event. |
| Cathode | Low-side surge path terminal | Connects to ground or return path; completes crowbar loop; identical electrical role to Anode in bidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| Fail-safe short-circuit mode | Guaranteed low-impedance latch-on failure mode protects downstream circuitry even if device degrades; eliminates open-circuit risk. |
| UL497B certification (E136224) | Validated for primary-side telecom surge protection per FCC Part 68, enabling direct use in certified central office and terminal equipment. |
| UL94 V0 epoxy encapsulation | Self-extinguishing resin prevents fire propagation during sustained overcurrent events, meeting safety standards for enclosed telecom hardware. |
| No aging under repeated surges | Stable VBO and IH parameters after >10⁴ 50 A pulses ensure long-term reliability in high-lightning-risk deployments (e.g., outdoor DSLAMs). |
Applications
| DSL Line Card Protection | T1/E1 Interface Protection |
|---|---|
Use Scenario: Protects ADSL/VDSL line interface ICs on carrier-grade DSLAM line cards exposed to induced lightning surges on outside plant copper pairs. IC Role / Device Role / Timing Role: Crowbar surge protector placed between line transformer secondary and codec input; clamps transients before they reach sensitive analog front-end. Use Value: Enables compliance with GR-1089 Core first-level (2500 V, 10/1000 µs) using only 20 Ω series resistor; 25 pF capacitance avoids signal integrity degradation at 30 MHz. | Use Scenario: Shields T1/E1 framer and line driver ICs in enterprise PBX systems connected to telco central office lines. IC Role / Device Role / Timing Role: Bidirectional overvoltage clamp on balanced differential pair; conducts surge energy to ground while maintaining DC bias integrity. Use Value: Maintains <1% signal distortion up to 2.048 MHz due to symmetrical low capacitance; UL497B approval simplifies FCC Part 68 certification. |
| Modem/Fax Terminal Protection | Central Office Equipment Protection |
Use Scenario: Integrated into residential VoIP gateway or fax modem PCBs to meet ITU-T K21 (1500 V, 10/700 µs) surge immunity requirements. IC Role / Device Role / Timing Role: Primary protection element upstream of hybrid transformer; triggered within 100 ns of overvoltage onset. Use Value: 293 V static VBO provides 33% margin above 220 V RMS line voltage; fail-safe short ensures no "invisible failure" mode. | Use Scenario: Used in central office line card surge modules handling multiple subscriber lines, requiring high-reliability fail-safe protection. IC Role / Device Role / Timing Role: High-energy crowbar device mounted on heavy-copper PCB; handles repeated 50 A surges without parameter drift. Use Value: 100 °C/W thermal resistance allows 150 mA continuous on-state current with standard FR4 layout; DO-15 axial leads enable automated through-hole assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional telecom surge protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPA200RL | 200 V standoff, 267 V static VBO, 12 mA IH, same DO-15 package and 50 A IPP rating | Lowers protection threshold by 20 V; suitable for lower-voltage AC lines (e.g., 110 V regions) or tighter margin designs | Select when system nominal line voltage is ≤200 V RMS and higher trigger sensitivity is required. |
| TPA240RL | 240 V standoff, 320 V static VBO, 12 mA IH, same DO-15 package and 50 A IPP rating | Raises protection threshold by 20 V; better suited for 240 V AC mains environments or high-noise industrial telecom sites | Select when system must tolerate higher temporary overvoltages (e.g., brownout recovery spikes) without false triggering. |
Compared with TPA200RL and TPA240RL, TPA220RL offers optimal balance for 220–230 V nominal telecom line applications-its 293 V VBO provides sufficient margin above 220 V RMS while avoiding nuisance tripping during transient line fluctuations.
Availability
TPA220RL is available at Aetrix Electronics and suitable for DSL line card protection, T1/E1 interface hardening, and central office equipment requiring stable component supply across multi-year telecom infrastructure deployments.
Supply support for TPA220RL 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 silicon solutions for automotive, industrial, and communications markets since 1987.
TPA220RL belongs to ST's Trisil™ family of bidirectional thyristor surge protectors, engineered specifically for fail-safe, high-reliability overvoltage protection in telecom infrastructure and FCC Part 68-certified terminal equipment.
FAQ
What is the fail-safe behavior of TPA220RL during end-of-life degradation?
TPA220RL fails in a short-circuit mode, maintaining low-impedance conduction once triggered. This ensures downstream circuitry remains protected even after repeated surge events, unlike MOVs that degrade to open-circuit. The device continues conducting until current falls below its 12 mA holding threshold, preventing uncontrolled voltage rise.
Can TPA220RL be used in AC mains surge protection applications?
No-TPA220RL is rated for telecom signal-line protection only, not AC mains. Its 220 V standoff and 293 V breakover are optimized for telephone line voltages (e.g., -48 V DC + AC ringing), not 120/230 VAC distribution systems. For mains protection, ST recommends dedicated AC-rated devices like SITRANS series.
How does TPA220RL's capacitance affect high-speed xDSL performance?
At 25 pF (measured at 50 V, 1 MHz), TPA220RL introduces negligible impedance (>600 Ω) above 10 MHz, preserving signal integrity for VDSL2 (up to 30 MHz) and G.fast (up to 212 MHz) interfaces. Its symmetrical bidirectional structure avoids DC bias shift, ensuring consistent performance on differential pairs.
Is TPA220RL compliant with RoHS and REACH regulations?
Yes-TPA220RL is manufactured in ST's ECOPACK®-compliant DO-15 package with lead-free second-level interconnects, fully conforming to EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. The inner box label specifies lead-free status per JEDEC JESD97.
TPA220RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TPA, TRISIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Breakover:
- 293V
- Voltage - Off State:
- 220V
- Voltage - On State:
- -
- Current - Peak Pulse (8/20µs):
- 150 A
- Current - Peak Pulse (10/1000µs):
- 50 A
- Current - Hold (Ih):
- 150 mA
- Number of Elements:
- 1
- Capacitance:
- 25pF
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
TPA220RL FAQ
1.How can I place an order for TPA220RL through Aetrix?
Please submit a Request for Quotation (RFQ) for TPA220RL 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 TPA220RL reliable?
The price and inventory of TPA220RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPA220RL is usually 5 days.
3.What payment methods are accepted for TPA220RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPA220RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPA220RL?
TPA220RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPA220RL 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 TPA220RL?
For technical support, including TPA220RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPA220RL requirements.
6.How does Aetrix verify that TPA220RL is sourced from the original manufacturer or authorized distributors?
All TPA220RL 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 TPA220RL meets industry standards.
7.What is the process for return or replacement of TPA220RL?
All TPA220RL units undergo pre-shipment inspection (PSI). If there is an issue with TPA220RL, 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 TPA220RL part is unused and in its original packaging.
Return procedure for TPA220RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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