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STMicroelectronics TPI12011NRL
- Part No.:
- TPI12011NRL
- Manufacturer:
- STMicroelectronics
- Category:
- Thyristors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPI12011NRL.pdf
- Description:
- THYRISTOR 30A 8-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,787
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Product details
Overview
TPI12011NRL from STMicroelectronics is a bidirectional tripolar crowbar protection device for ISDN U-interface and S-interface telecom line protection, featuring 120 V breakdown voltage (VBR), 170 V dynamic breakover voltage (VBO_dyn), 30 A peak pulse current (10/1000 µs), and SO-8 package. It provides symmetrical common- and differential-mode surge clamping for Tip/Ring/GND lines in digital subscriber line systems.
For engineers reviewing the TPI12011NRL datasheet, TPI12011NRL pinout, TPI12011NRL application, or TPI12011NRL equivalent, key selection criteria include verified bidirectional clamping symmetry, low capacitance balance (≤30 pF mismatch), fixed VBR across modes, and "4-point" internal bonding architecture for fast transient suppression without L·di/dt overshoot.
Technical Context
The TPI12011NRL implements a monolithic triple-Trisil™ structure with matched thyristor pairs per line (Tip–GND, Ring–GND, Tip–Ring), enabling identical surge response in both polarities and modes. Its internal "4-point" wire bonding eliminates parasitic inductance-induced voltage spikes during sub-microsecond transients.
It operates as a voltage-triggered crowbar: remains high-impedance below 120 V (VBR), switches to low-impedance conduction at 170 V (VBO_dyn) under surge, and holds on until current falls below 150 mA (IH). Capacitance is asymmetrically balanced (CA/CB ≤45/15 pF) to preserve longitudinal signal integrity on ISDN B-channels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR | 120 V - guaranteed symmetric breakdown voltage in both common- and differential-mode surges |
| VBO_dyn | 170 V - dynamic breakover voltage under 10/1000 µs pulse, defining actual clamping threshold |
| IPP | 30 A (10/1000 µs) - peak surge current handling capacity without failure |
| C (max) | 45 pF - maximum line-to-ground capacitance ensuring <2% signal attenuation at 140 kHz ISDN carrier |
| IH | 150 mA - holding current level; ensures automatic recovery after surge when line current drops below this value |
| CA – CB | ≤30 pF - measured capacitance imbalance between Tip–GND and Ring–GND paths, critical for longitudinal balance |
| Rth(j-a) | 170 °C/W - junction-to-ambient thermal resistance in SO-8 package, limiting continuous power dissipation to ~0.7 W |
Pinout & Package
Supplied in standard SO-8 package (JEDEC MS-012AC), 5.0 mm × 6.2 mm body, 1.27 mm pitch, lead-free ECOPACK® compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Tip) | Line A input terminal | Connects to ISDN Tip conductor; forms crowbar path with Pins 2/3 (GND) and Pin 8 (Ring) |
| 2 (GND) | Ground reference terminal | Common cathode connection point for all three thyristor sections; must be low-inductance grounded |
| 3 (GND) | Ground reference terminal | Duplicate GND pin for enhanced surge current distribution and reduced bond-wire inductance |
| 4 (Ring) | Line B input terminal | Connects to ISDN Ring conductor; forms crowbar path with Pins 2/3 (GND) and Pin 1 (Tip) |
| 5 (Ring) | Line B input terminal | Duplicate Ring pin enabling "4-point" layout-Tip and Ring traces cross over device for L·di/dt cancellation |
| 6 (GND) | Ground reference terminal | Third GND pin supporting high-current return path during simultaneous Tip+Ring surges |
| 7 (GND) | Ground reference terminal | Fourth GND pin completing symmetrical ground network for balanced common-mode clamping |
| 8 (Tip) | Line A input terminal | Duplicate Tip pin enabling physical trace crossing with Ring (Pins 4/5) to eliminate wiring inductance overshoot |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional triple crowbar topology | Enables simultaneous Tip–GND, Ring–GND, and Tip–Ring clamping with identical VBR in ± polarity |
| "4-point" internal bonding | Eliminates L·di/dt voltage overshoot during fast transients (<100 ns) by routing Tip/Ring traces across device |
| Capacitance balance (CA–CB ≤30 pF) | Maintains longitudinal balance >50 dB up to 200 kHz, preserving ISDN B-channel bit error rate |
| Fixed VBR in common & differential mode | Guarantees consistent 120 V triggering regardless of surge coupling path-critical for CCITT K.20 compliance |
| SO-8 ECOPACK® packaging | Lead-free second-level interconnect with UL94 V0 epoxy; supports automated reflow without solder joint reliability risk |
Applications
| ISDN U-Interface Protection | ISDN S-Interface Protection |
|---|---|
Use Scenario: Protecting central office line cards against lightning-induced surges on two-wire copper loops. IC Role / Device Role / Timing Role: Tripolar crowbar clamping device placed directly at line entry, shunting surge energy to earth before reaching transceiver ICs. Use Value: Maintains 120 V VBR tolerance across temperature (–40°C to +85°C), ensuring no false triggering during normal -48 V DC bias operation. | Use Scenario: Safeguarding NT1 network termination units against induced transients from adjacent power lines or switching noise. IC Role / Device Role / Timing Role: Symmetric bidirectional protector between S-interface Tip/Ring pair and system ground plane. Use Value: 30 pF max capacitance per line preserves 140 kHz ISDN carrier amplitude within ±0.5 dB, avoiding B-channel desynchronization. |
| DSL Line Card Surge Protection | VoIP Gateway Analog Front End |
Use Scenario: Front-end protection in ADSL2+ line cards where legacy ISDN compatibility requires same physical interface. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of hybrid transformer and line driver amplifier. Use Value: Identical 170 V VBO_dyn in both Tip→GND and Ring→GND directions prevents differential-mode surge skew that degrades echo cancellation. | Use Scenario: Protecting FXS (Foreign Exchange Station) ports in enterprise VoIP gateways connected to POTS lines. IC Role / Device Role / Timing Role: Bidirectional crowbar placed between tip/ring terminals and codec IC's analog input stage. Use Value: 150 mA IH ensures automatic reset after surge clears, eliminating need for external reset circuitry or manual intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar tripolar telecom line protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPI12011N | Tape-and-reel variant differs only in packing mode (tube vs. reel); identical electrical specs and SO-8 footprint | No functional difference; selected for manual prototyping (tube) vs. automated assembly (reel) | Choose TPI12011NRL for SMT production; TPI12011N for bench evaluation or low-volume hand-soldering |
| PESD5V0S1BA | Unidirectional ESD array (5 V clamping), 30 pF/channel, no crowbar action or surge hold capability | Only suitable for board-level ESD (IEC 61000-4-2), not for lightning-level surge (IEC 61000-4-5 or CCITT K.20) | Use only as secondary protection downstream of TPI12011NRL; never as standalone ISDN line protector |
Compared with TPI12011N (tube-packaged sibling), TPI12011NRL offers identical protection performance with optimized logistics for high-volume manufacturing; versus PESD5V0S1BA, it delivers true crowbar-based surge immunity-not just ESD clamping-with 30× higher IPP and functional hold-off recovery.
Availability
TPI12011NRL is available at Aetrix Electronics and suitable for ISDN line card design, DSL front-end protection, VoIP gateway development, and telecom infrastructure equipment requiring stable component supply across extended product lifecycles.
Supply support for TPI12011NRL 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 automotive ICs with focus on industrial and communications reliability.
The TPI series belongs to ST's Trisil™ protected line interface portfolio, engineered specifically for telecom-grade surge immunity in ISDN, xDSL, and analog telephony applications where bidirectional crowbar action and longitudinal balance are mandatory.
FAQ
What is the maximum operating temperature for TPI12011NRL?
The TPI12011NRL has a maximum junction temperature (Tj) of 150 °C and a storage temperature range of –55 °C to +150 °C. Its SO-8 package exhibits Rth(j-a) = 170 °C/W, limiting continuous power dissipation to approximately 0.7 W at 25 °C ambient. Derating is required above 25 °C per the thermal resistance curve in the datasheet.
Does TPI12011NRL require external bias or control signals?
No. The TPI12011NRL is a passive crowbar device with no pins for bias, enable, or configuration. It operates solely on voltage threshold: remaining non-conductive below 120 V (VBR), triggering at 170 V (VBO_dyn) during surge, and holding conduction until line current falls below 150 mA (IH). No external circuitry is needed for basic protection function.
Can TPI12011NRL protect against both common-mode and differential-mode surges?
Yes. Its monolithic triple-Trisil™ structure guarantees identical 120 V breakdown voltage (VBR) and 170 V dynamic breakover voltage (VBO_dyn) for both common-mode (Tip–GND or Ring–GND) and differential-mode (Tip–Ring) surges, as validated per CCITT K.20 and VDE 0433 standards. This symmetry eliminates mode-dependent clamping skew.
How does the "4-point" bonding architecture improve surge response?
The "4-point" bonding routes Tip and Ring traces physically across the device (Pins 1/8 and 4/5), allowing surge current paths to cancel opposing magnetic fields. This eliminates L·di/dt voltage overshoot during fast transients (<100 ns), preventing false triggering or incomplete clamping that occurs in conventional dual-pin layouts with shared bond wires.
TPI12011NRL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- TPI
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Breakover:
- 160V
- Voltage - Off State:
- -
- Voltage - On State:
- -
- Current - Peak Pulse (8/20µs):
- -
- Current - Peak Pulse (10/1000µs):
- 30 A
- Current - Hold (Ih):
- 150 mA
- Number of Elements:
- 1
- Capacitance:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TPI12011NRL FAQ
1.How can I place an order for TPI12011NRL through Aetrix?
Please submit a Request for Quotation (RFQ) for TPI12011NRL 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 TPI12011NRL reliable?
The price and inventory of TPI12011NRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPI12011NRL is usually 5 days.
3.What payment methods are accepted for TPI12011NRL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPI12011NRL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPI12011NRL?
TPI12011NRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPI12011NRL 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 TPI12011NRL?
For technical support, including TPI12011NRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPI12011NRL requirements.
6.How does Aetrix verify that TPI12011NRL is sourced from the original manufacturer or authorized distributors?
All TPI12011NRL 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 TPI12011NRL meets industry standards.
7.What is the process for return or replacement of TPI12011NRL?
All TPI12011NRL units undergo pre-shipment inspection (PSI). If there is an issue with TPI12011NRL, 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 TPI12011NRL part is unused and in its original packaging.
Return procedure for TPI12011NRL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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