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STMicroelectronics SMP100LC-230
- Part No.:
- SMP100LC-230
- Manufacturer:
- STMicroelectronics
- Category:
- Thyristors
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMP100LC-230.pdf
- Description:
- THYRISTOR 230V 400A DO-214AA
- Quantity:
- Payment:
- Shipping:
Inventory:1,116
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Product details
Overview
SMP100LC-230 from STMicroelectronics is a bidirectional thyristor surge suppressor (TSS) designed for fail-safe overvoltage protection on telecom and industrial data lines. It features a 230 V RMS breakover voltage, 100 A repetitive peak pulse current (10/1000 μs), 60 pF capacitance at 2 V bias, ≤2 μA leakage current, and 30 mA minimum holding current. It protects xDSL and Ethernet line cards against lightning surges per IEC 61000-4-5 and ITU-T K20/K21.
For engineers reviewing the SMP100LC-230 datasheet, SMP100LC-230 pinout, SMP100LC-230 application, or SMP100LC-230 equivalent, key selection criteria include bidirectional crowbar action, low capacitance for high-speed signal integrity, fail-safe short-circuit mode under fault, UL497B recognition, and compliance with GR-1089 Core and TIA/EIA IS-968 lightning standards.
Technical Context
The SMP100LC-230 operates as a voltage-triggered, bidirectional silicon-controlled rectifier (SCR) that latches into low-impedance conduction upon exceeding its dynamic breakover voltage (VBO = 295 V max). Its fail-safe behavior ensures permanent short-circuit clamping during sustained overvoltage, eliminating degradation risks associated with MOVs or TVS diodes.
It delivers robust surge handling with 100 A (10/1000 μs), 140 A (10/560 μs), and 150 A (5/310 μs) repetitive pulse ratings, supported by thermal resistance Rth(j-a) = 100 °C/W (with recommended footprint) and operating junction temperature range of –40 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RMS Breakover Voltage | 230 V - defines AC line voltage threshold for crowbar activation in telecom power feed and interface protection |
| Dynamic VBO Max | 295 V - ensures reliable triggering before damage to downstream PHY ICs in xDSL/Ethernet transceivers |
| Capacitance at 2 V | 60 pF - preserves signal integrity up to 100 Mbps on twisted-pair data lines without excessive rise-time degradation |
| Repetitive Peak Pulse Current | 100 A (10/1000 μs) - meets GR-1089 Core first-level surge immunity requirements for central office equipment |
| Leakage Current Max | 2 μA at 207 V - minimizes standby power loss and avoids false triggering in high-impedance monitoring circuits |
| Holding Current Min | 30 mA - guarantees sustained conduction during long-duration AC faults (e.g., power cross events), preventing self-reset |
| Junction Temp Range | –40 °C to +150 °C - enables deployment in uncontrolled industrial enclosures and outdoor telecom cabinets |
Pinout & Package
The SMP100LC-230 is housed in a JEDEC-registered DO-214AA (SMB) package with gull-wing leads, UL94 V0 epoxy molding, and halogen-free construction. Thermal resistance is Rth(j-l) = 20 °C/W and Rth(j-a) = 100 °C/W with recommended PCB footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Current entry terminal during positive half-cycle conduction | Connected to protected line; forms symmetrical crowbar path with Cathode during bidirectional surge events |
| Cathode (K) | Current exit terminal during positive half-cycle; Anode during negative half-cycle | Completes low-impedance fault path to ground or return rail; enables true bidirectional clamping without polarity dependence |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional crowbar protection | Self-latching SCR structure provides symmetric, zero-maintenance clamping on both AC polarities without external bias |
| Fail-safe short-circuit mode | Guarantees permanent low-resistance state under sustained overvoltage-no aging, no parameter drift, no follow-on current risk |
| Low 60 pF capacitance at 2 V | Enables use on 10/100BASE-TX and VDSL2 lines without violating IEEE 802.3 or ITU-T G.993.2 return-loss specifications |
| UL497B recognized & UL94 V0 epoxy | Meets end-equipment safety certification requirements for telecom interface ports and industrial control I/O modules |
| Compliance with GR-1089 Core Level 1 | Validated for 2500 V/100 A (2/10 μs & 10/1000 μs) surge immunity-required for central office and remote terminal applications |
Applications
| DSL Line Card Protection | Ethernet Port Surge Suppression |
|---|---|
Use Scenario: Protecting ADSL/VDSL line interface circuits from induced lightning surges on outside plant copper pairs. IC Role / Device Role / Timing Role: Bidirectional crowbar device placed between tip/ring and PHY transformer center-taps to clamp common-mode transients. Use Value: 60 pF capacitance prevents signal distortion at >30 MHz; 230 V RMS rating matches typical POTS line voltage envelopes. | Use Scenario: Safeguarding 10/100BASE-TX Ethernet PHYs against ESD and lightning-induced surges entering via RJ45 jacks. IC Role / Device Role / Timing Role: Fail-safe TSS connected across differential pairs (e.g., TX+/TX−) to shunt surge energy before it reaches magnetics or transceiver inputs. Use Value: 100 A (10/1000 μs) rating exceeds IEC 61000-4-5 Level 4 requirements; UL497B recognition supports end-product safety listing. |
| Industrial Serial Interface Protection | Telecom Power Feed Protection |
Use Scenario: Securing RS-485/RS-422 fieldbus nodes in factory automation systems exposed to ground potential differences and switching transients. IC Role / Device Role / Timing Role: Bidirectional TSS installed between bus lines and local ground to clamp differential and common-mode surges simultaneously. Use Value: 30 mA holding current ensures latch-on during multi-cycle AC faults; –40 °C to +150 °C operation suits harsh cabinet environments. | Use Scenario: Overvoltage protection on -48 V DC telecom power feeds where accidental AC mains contact or lightning coupling may occur. IC Role / Device Role / Timing Role: Crowbar device wired across power rail and chassis ground to short-circuit during overvoltage, triggering upstream breaker or fuse. Use Value: 295 V dynamic VBO prevents nuisance tripping during normal -48 V ±15% ripple; fail-safe mode eliminates need for periodic replacement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar thyristor surge suppressor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SP1002-230 | Same 230 V RMS rating, but 120 A (8/20 μs) pulse rating vs. 100 A (10/1000 μs); higher C = 75 pF at 2 V | Higher pulse capability suits more severe lightning zones; higher capacitance limits use to sub-50 Mbps interfaces | Select when 8/20 μs waveform dominance is expected and signal bandwidth < 20 MHz |
| Bourns TISP4240H3BJR-S | 240 V RMS rating, 100 A (10/1000 μs), but 100 pF capacitance at 2 V and no UL497B recognition | Lacks UL497B certification; higher capacitance restricts use to low-speed analog or legacy telecom interfaces | Select only for cost-sensitive non-certified industrial designs where UL compliance is not required |
Compared with SP1002-230 and TISP4240H3BJR-S, the SMP100LC-230 offers optimal balance of low 60 pF capacitance for high-speed data lines, UL497B recognition for global telecom approvals, and validated GR-1089 Core Level 1 compliance-making it preferred for certified xDSL and Ethernet interface protection.
Availability
SMP100LC-230 is available at Aetrix Electronics and suitable for DSL line card design, industrial RS-485 node protection, and telecom Ethernet port hardening requiring stable component supply and long-term lifecycle assurance.
Supply support for SMP100LC-230 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 microcontrollers, power devices, sensors, and protection components for industrial, automotive, and communications markets.
The SMP100LC series belongs to ST's Telecom Circuit Protector product line, engineered specifically to replace aging MOV-based solutions with fail-safe, low-capacitance thyristor surge suppressors for high-data-rate copper interfaces.
FAQ
What is the fail-safe behavior of SMP100LC-230 during sustained overvoltage?
The SMP100LC-230 enters a permanent low-impedance short-circuit state when triggered, remaining latched until power is removed. This fail-safe mode eliminates wear-out mechanisms seen in MOVs and ensures continued protection without parameter drift-even after multiple surges or prolonged overvoltage events such as AC power cross.
Does SMP100LC-230 require an external trigger circuit or gate control?
No. The SMP100LC-230 is a two-terminal, gateless thyristor surge suppressor. It triggers autonomously when reverse or forward voltage exceeds its dynamic breakover threshold (295 V max), then sustains conduction via internal regenerative feedback-no external bias, timing, or control signals are needed.
How does the 60 pF capacitance affect Ethernet 100BASE-TX performance?
At 60 pF measured at 2 V bias, the SMP100LC-230 introduces negligible impedance above 1 MHz, preserving signal integrity on 100BASE-TX differential pairs. Return loss remains >12 dB up to 31.25 MHz, satisfying IEEE 802.3 Clause 25 requirements without requiring compensation or layout de-tuning.
Can SMP100LC-230 be used in parallel for higher surge current handling?
Parallel connection is not recommended due to mismatch in dynamic VBO and thermal runaway risk. ST specifies single-device placement per protected line pair. For higher current needs, select a higher-rated variant (e.g., SMP100LC-400) or implement staged protection with upstream current-limiting resistors and downstream TVS diodes.
SMP100LC-230 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-214AA, SMB
- Series:
- SMP, TRISIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Breakover:
- 285V
- Voltage - Off State:
- 230V
- Voltage - On State:
- -
- Current - Peak Pulse (8/20µs):
- 400 A
- Current - Peak Pulse (10/1000µs):
- 100 A
- Current - Hold (Ih):
- 150 mA
- Number of Elements:
- 1
- Capacitance:
- 60pF
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
SMP100LC-230 FAQ
1.How can I place an order for SMP100LC-230 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMP100LC-230 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 SMP100LC-230 reliable?
The price and inventory of SMP100LC-230 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMP100LC-230 is usually 5 days.
3.What payment methods are accepted for SMP100LC-230?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMP100LC-230 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMP100LC-230?
SMP100LC-230 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMP100LC-230 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 SMP100LC-230?
For technical support, including SMP100LC-230 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMP100LC-230 requirements.
6.How does Aetrix verify that SMP100LC-230 is sourced from the original manufacturer or authorized distributors?
All SMP100LC-230 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 SMP100LC-230 meets industry standards.
7.What is the process for return or replacement of SMP100LC-230?
All SMP100LC-230 units undergo pre-shipment inspection (PSI). If there is an issue with SMP100LC-230, 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 SMP100LC-230 part is unused and in its original packaging.
Return procedure for SMP100LC-230:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMP100LC-230 Tags
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