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STMicroelectronics SMP80MC-270
- Part No.:
- SMP80MC-270
- Manufacturer:
- STMicroelectronics
- Category:
- Thyristors
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMP80MC-270.pdf
- Description:
- THYRISTOR 270V 200A DO-214AA
- Quantity:
- Payment:
- Shipping:
Inventory:1,162
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Product details
Overview
SMP80MC-270 from STMicroelectronics is a bidirectional Trisil™ transient voltage surge suppressor (TVSS) designed for primary-level overvoltage protection in telecom line interfaces. It features a 270 V stand-off voltage (VRM), 345 V dynamic breakover voltage (VBO), 80 A repetitive peak pulse current (10/1000 µs), 12 pF capacitance at 50 V, and 2 µA max leakage current - enabling low-signal-distortion protection for ADSL2+/VDSL2 equipment.
For engineers reviewing the SMP80MC-270 datasheet, SMP80MC-270 pinout, SMP80MC-270 application, or SMP80MC-270 equivalent, this device is selected for telecom surge protection where micro-capacitance, fail-safe short-circuit behavior, and GR-1089 Core compliance are critical design requirements.
Technical Context
The SMP80MC-270 operates as a bidirectional crowbar device that latches into low-impedance conduction upon exceeding its dynamic breakover voltage (345 V), sustaining conduction until current falls below 150 mA holding current (IH). Its fail-safe short-circuit mode ensures continued protection even after end-of-life stress events.
Designed for telecom line interface protection, it meets GR-1089 Core first-level (2500 V, 10/1000 µs, 500 A) and ITU-T K20/K21 (6000 V, 10/700 µs) surge immunity standards without signal degradation due to its 12 pF capacitance and low leakage (≤2 µA at 243 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRM) | 243 V - Maximum continuous reverse voltage before conduction begins; sets operating margin for 270 V nominal telecom lines. |
| Dynamic Breakover Voltage (VBO) | 345 V - Voltage threshold at which device triggers into crowbar mode under 100 V/µs dV/dt; ensures fast response to lightning surges. |
| Repetitive Peak Pulse Current (IPP) | 80 A @ 10/1000 µs - Sustained surge handling capability per IEC 61000-4-5; supports repeated lightning strike events. |
| Junction Capacitance (C) | 12 pF @ 50 V - Enables compatibility with high-speed digital transmission (ADSL2+, VDSL2) without signal integrity loss. |
| Holding Current (IH) | 150 mA min - Minimum current required to maintain on-state; ensures reliable latch-on during surge and clean turn-off post-event. |
| Leakage Current (IR) | 2 µA max @ VRM - Ultra-low standby leakage preserves line bias stability and minimizes power loss in always-on telecom circuits. |
Pinout & Package
Package: SMB (JEDEC DO-214AA), surface-mount, lead-free, UL94 V0 epoxy encapsulation. Dimensions: 5.10–5.60 mm (E), 4.05–4.60 mm (E1), 3.30–3.95 mm (D), 1.90–2.45 mm (A1), 0.75–1.50 mm (L).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Surge current path terminals | No polarity marking; symmetric bidirectional conduction enables single-device protection of AC telecom lines (e.g., POTS, xDSL). |
| Case / Body | Thermal and mechanical reference | Non-electrical; soldered to PCB copper pour for thermal dissipation (Rth(j-a) = 100 °C/W with recommended footprint). |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional crowbar action | Enables single-device protection of AC-coupled telecom lines without external polarity management or series diodes. |
| Fail-safe short-circuit mode | Guarantees continued overvoltage clamping even after end-of-life stress, meeting UL60950 and IEC 61000-4-5 safety requirements. |
| Micro capacitance (12 pF) | Preserves signal fidelity up to 30 MHz; validated for ADSL2+ (up to 2.2 MHz) and VDSL2 (up to 17 MHz) line interfaces. |
| Low VBO/VR ratio (1.42) | Ensures tight clamping margin and rapid triggering - critical for protecting downstream transceivers against fast-rising lightning transients. |
| GR-1089 Core compliance | Qualified for first-level (2500 V, 10/1000 µs) and intra-building (1500 V, 2/10 µs) telecom surge immunity per Telcordia specification. |
Applications
| DSL Line Interface Protection | Central Office Line Card |
|---|---|
|
Use Scenario: Protection of ADSL2+/VDSL2 line drivers and receivers against lightning-induced surges on twisted-pair copper loops. IC Role / Device Role / Timing Role: Primary crowbar surge arrestor placed at line entry point, upstream of isolation transformers and line drivers. Use Value: 12 pF capacitance avoids signal distortion; 80 A IPP rating handles repeated 10/1000 µs surges per GR-1089 Core first-level test. |
Use Scenario: Front-end protection of analog line cards in telecom central office switching systems exposed to cross-talk and induced surges. IC Role / Device Role / Timing Role: Bidirectional overvoltage clamp on each subscriber line pair, operating continuously across -40°C to +150°C junction range. Use Value: Fail-safe short-circuit behavior ensures no open-circuit failure mode; UL497B recognition simplifies system-level safety certification. |
| VoIP Gateway Protection | ISDN BRI Interface |
|
Use Scenario: Surge suppression on FXS/FXO ports of enterprise VoIP gateways connected to PSTN lines. IC Role / Device Role / Timing Role: Standoff protector maintaining 243 V DC line bias while clamping transients >345 V within nanoseconds. Use Value: 2 µA max leakage prevents DC bias shift; SMB package allows high-density layout on compact gateway PCBs. |
Use Scenario: Overvoltage protection for ISDN Basic Rate Interface (2B+D) U-interface lines subject to lightning and power-crossing events. IC Role / Device Role / Timing Role: Bidirectional crowbar element placed before line transformer, rated for 1500 V intra-building surges per GR-1089. Use Value: 150 mA IH ensures stable latching during 10/1000 µs surges; JEDEC DO-214AA footprint ensures manufacturability and thermal reliability. |
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 |
|---|---|---|---|
| Littelfuse SP1003-270 | Higher VBO (370 V), same 270 V VRM; 100 A IPP (10/1000 µs); 15 pF capacitance. | Marginally higher clamping voltage reduces protection level for sensitive transceivers; higher capacitance may affect >10 MHz signal integrity. | Select when higher surge current headroom is prioritized over minimal signal distortion. |
| Bourns 2061-270 | Unidirectional configuration; requires dual-device implementation for AC lines; 350 V VBO; 10 pF capacitance. | Not directly substitutable without circuit redesign; adds component count and board area vs. SMP80MC-270's integrated bidirectionality. | Choose only if unidirectional topology is mandated and space allows dual placement. |
Compared with SP1003-270 and 2061-270, the SMP80MC-270 uniquely combines bidirectional operation, ultra-low 12 pF capacitance, and fail-safe short-circuit behavior - making it optimal for space-constrained, high-fidelity telecom line interfaces requiring GR-1089 compliance without redesign.
Availability
SMP80MC-270 is available at Aetrix Electronics and suitable for DSL line interface protection, central office line cards, VoIP gateway front-ends, and ISDN BRI interfaces requiring stable component supply and long-term lifecycle support.
Supply support for SMP80MC-270 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, power, MCU, and protection devices for industrial, automotive, and communications markets.
The SMP80MC series belongs to ST's Trisil™ transient protection product line, engineered specifically for fail-safe, low-capacitance surge suppression in telecom infrastructure - addressing GR-1089, ITU-T K20/K21, and IEC 61000-4-5 compliance requirements.
FAQ
What is the maximum continuous operating voltage for SMP80MC-270?
The SMP80MC-270 has a maximum continuous stand-off voltage (VRM) of 243 V, corresponding to its 270 V nominal rating. This value represents the highest DC or RMS AC voltage the device can withstand without triggering, verified per IEC 61000-4-5 test conditions at 25 °C ambient.
Does SMP80MC-270 require a series current-limiting resistor?
Yes - a series resistor is required to limit follow current after triggering and ensure safe turn-off. For 48 V telecom lines, a typical value is 10–22 Ω; exact value depends on system voltage, source impedance, and required hold-off time, as defined in GR-1089 Core first-level test setup.
Is SMP80MC-270 RoHS and REACH compliant?
Yes - SMP80MC-270 is manufactured in a lead-free, RoHS-compliant process and carries ECOPACK® environmental grade certification. Its epoxy meets UL94 V0 flammability rating, and full compliance documentation is available via STMicroelectronics' quality portal.
How does SMP80MC-270 behave after reaching end-of-life?
It fails in a short-circuit (fail-safe) mode, maintaining low-impedance conduction during overvoltage events. This behavior is inherent to Trisil™ technology and ensures continued protection - a key requirement for UL60950 and IEC 61000-4-5 certified telecom equipment.
SMP80MC-270 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-214AA, SMB
- Series:
- SMP, TRISIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Breakover:
- 345V
- Voltage - Off State:
- 270V
- Voltage - On State:
- -
- Current - Peak Pulse (8/20µs):
- 200 A
- Current - Peak Pulse (10/1000µs):
- 80 A
- Current - Hold (Ih):
- 150 mA
- Number of Elements:
- 1
- Capacitance:
- 25pF
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
SMP80MC-270 FAQ
1.How can I place an order for SMP80MC-270 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMP80MC-270 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 SMP80MC-270 reliable?
The price and inventory of SMP80MC-270 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMP80MC-270 is usually 5 days.
3.What payment methods are accepted for SMP80MC-270?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMP80MC-270 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMP80MC-270?
SMP80MC-270 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMP80MC-270 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 SMP80MC-270?
For technical support, including SMP80MC-270 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMP80MC-270 requirements.
6.How does Aetrix verify that SMP80MC-270 is sourced from the original manufacturer or authorized distributors?
All SMP80MC-270 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 SMP80MC-270 meets industry standards.
7.What is the process for return or replacement of SMP80MC-270?
All SMP80MC-270 units undergo pre-shipment inspection (PSI). If there is an issue with SMP80MC-270, 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 SMP80MC-270 part is unused and in its original packaging.
Return procedure for SMP80MC-270:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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