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STMicroelectronics SMP100MC-320
- Part No.:
- SMP100MC-320
- Manufacturer:
- STMicroelectronics
- Category:
- Thyristors
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMP100MC-320.pdf
- Description:
- THYRISTOR 320V 300A DO-214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,197
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Product details
Overview
SMP100MC-320 from STMicroelectronics is a bidirectional thyristor surge suppressor (TSS) designed for fail-safe overvoltage protection on high-speed data lines. It features a 320 V breakover voltage (VBO), 15 pF typical capacitance at 50 V, 2 μA max leakage current, 150 mA minimum holding current, and 100 A repetitive peak pulse current (10/1000 μs). It is used in ADSL2+ and low-end VDSL line cards to prevent signal distortion while meeting GR-1089 Core and ITU-T K20/K21 standards.
For engineers reviewing the SMP100MC-320 datasheet, SMP100MC-320 pinout, SMP100MC-320 application, or SMP100MC-320 equivalent, key selection criteria include micro-capacitance (<20 pF), bidirectional crowbar action, fail-safe short-circuit mode under fault, compliance with IEC 61000-4-5 Level 4, and DO-214AA (SMB) package compatibility with telecom PCB layouts.
Technical Context
The SMP100MC-320 operates as a voltage-triggered bidirectional thyristor, entering low-impedance conduction when transient voltage exceeds its dynamic breakover threshold of 320 V. Its intrinsic crowbar behavior ensures immediate clamping and sustained conduction until current falls below 150 mA holding level.
It delivers robust surge immunity per IEC 61000-4-5 (4 kV, 10/700 μs), ITU-T K20 (6 kV, 10/700 μs), and GR-1089 Core (2.5–5 kV levels), with thermal design supported by Rth(j-a) = 100 °C/W and Tj range from –40 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBO (Dynamic) | 320 V - triggers crowbar conduction at defined overvoltage threshold without degradation |
| C (at VR = 50 V) | 15 pF typ. - preserves signal integrity on ADSL/VDSL lines up to 30 MHz |
| IR (max) | 2 μA - minimizes standby power loss and avoids false triggering in low-leakage systems |
| IH (min) | 150 mA - ensures reliable latching during surge events and prevents premature turn-off |
| IPP (10/1000 μs) | 100 A - handles repeated lightning-induced surges per GR-1089 and ITU-T standards |
| Package | DO-214AA (SMB) - JEDEC-registered surface-mount outline with 5.1–5.6 mm body width |
| Tj Range | –40 °C to +150 °C - supports operation in industrial telecom cabinets and outdoor DSLAM environments |
Pinout & Package
Package: DO-214AA (SMB), epoxy-molded, UL94 V0 rated, lead-free plating, halogen-free resin. Dimensions: E = 5.1–5.6 mm, D = 3.3–3.95 mm, L = 0.75–1.5 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Surge current entry point (bidirectional) | Accepts transient energy from either polarity; symmetric with Cathode in TSS structure |
| Cathode (K) | Surge current exit point (bidirectional) | Completes low-impedance path during crowbar event; electrically interchangeable with Anode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional crowbar protection | Self-triggering conduction in both polarities without external bias; eliminates need for back-to-back diode arrangements |
| Micro capacitance (15 pF) | Enables use on >10 Mbps digital lines (ADSL2+, VDSL) without insertion loss or timing skew |
| Fail-safe short-circuit mode | Guarantees permanent low-Z state under catastrophic overcurrent, preventing fire risk and enabling fuse coordination |
| Low VBO / VR ratio | Ensures precise, repeatable triggering margin above normal operating voltage (e.g., 320 V VBO vs. 240 V AC RMS) |
| UL497B recognition & GR-1089 compliance | Validated for primary-side telecom surge protection in central office and CPE equipment per regulatory test plans |
Applications
| ADSL2+ Line Card Protection | VDSL Central Office Interface |
|---|---|
Use Scenario: Protects xDSL line drivers and receivers from induced lightning surges on twisted-pair copper loops. IC Role / Device Role / Timing Role: Bidirectional crowbar device placed between tip/ring and ground, clamping transients before they reach PHY ICs. Use Value: 15 pF capacitance avoids attenuation of 2.2 MHz upstream signals; 100 A IPP withstands multiple GR-1089 first-level surges. | Use Scenario: Shields line interface circuits in DSLAMs against longitudinal surges from outside plant wiring. IC Role / Device Role / Timing Role: Primary surge arrestor in fail-safe configuration, coordinated with series impedance and secondary TVS. Use Value: Fail-safe short-circuit mode meets UL60950 fault containment requirements; SMB package enables automated placement on dense backplane boards. |
| Telecom Terminal Equipment (Modem/Fax) | Building Entry Point Protection |
Use Scenario: Integrated into residential gateway modems to meet IEC 61000-4-5 and ITU-T K21 immunity requirements. IC Role / Device Role / Timing Role: First-line protector on analog telephone interface (POTS), triggered before downstream protection stages. Use Value: Low leakage (2 μA) prevents DC loop current disruption; DO-214AA footprint matches legacy telecom board layouts. | Use Scenario: Installed at building entrance panels to divert multi-kA surges before distribution to internal telecom lines. IC Role / Device Role / Timing Role: High-energy crowbar element in coordinated protection scheme with gas discharge tubes and series resistors. Use Value: 500 A non-repetitive surge rating (8/20 μs) supports GR-1089 intra-building surge handling; 150 °C max Tj allows operation in uncooled enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar thyristor surge suppressor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMCJ33CA | Unidirectional TVS diode; 33 V standoff, 53.3 V clamping, 1500 W peak power; no fail-safe mode | Limited to low-voltage DC rails; unsuitable for AC line or bidirectional telecom surge suppression | Select only for sub-50 V DC protection where crowbar action and fail-safe short are not required |
| P6KE33CA | Unidirectional 600 W TVS; 33 V working voltage, 53.3 V clamping; higher capacitance (>100 pF) | Not certified to GR-1089 or ITU-T K20; lacks micro-capacitance for data lines | Use only in cost-sensitive, non-telecom applications with no high-speed signal constraints |
Compared with SMCJ33CA and P6KE33CA, SMP100MC-320 uniquely provides bidirectional, low-capacitance, fail-safe crowbar protection validated for telecom AC line surge standards-making it irreplaceable in ADSL/VDSL front-end protection where signal fidelity and safety certification are mandatory.
Availability
SMP100MC-320 is available at Aetrix Electronics and suitable for ADSL2+ line card design, VDSL central office interface development, and telecom terminal equipment requiring stable component supply across extended product lifecycles.
Supply support for SMP100MC-320 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 SMP100MC series belongs to ST's Telecom Circuit Protector product line, engineered specifically for fail-safe, low-distortion surge suppression on high-data-rate copper interfaces including xDSL, ISDN, and analog telephony.
FAQ
What is the fail-safe behavior of SMP100MC-320 during a catastrophic surge?
Under non-repetitive surge exceeding its IFS rating (5 kA, 8/20 μs), SMP100MC-320 enters permanent short-circuit mode, providing a low-impedance path to ground. This prevents thermal runaway and satisfies UL60950 fault containment requirements, enabling safe coordination with upstream fuses or PTCs.
Can SMP100MC-320 be used on Ethernet (10/100BASE-T) lines?
No-SMP100MC-320 is not recommended for Ethernet. Its 320 V VBO is too high for 2.5–5 V PHY signaling, and its crowbar action would disrupt DC bias and common-mode voltage. It is qualified only for telecom AC lines (POTS, xDSL) per ITU-T K20/K21 and GR-1089.
How does SMP100MC-320 differ from standard TVS diodes in surge response?
Unlike TVS diodes that clamp at a fixed voltage and reset after transient decay, SMP100MC-320 latches into low-impedance conduction (crowbar) until current drops below 150 mA. This ensures sustained clamping during long-duration surges like AC power faults, eliminating follow-on current risks inherent in TVS-based designs.
Is the SMB package of SMP100MC-320 compatible with reflow soldering per J-STD-020?
Yes-the SMB package supports standard lead-free reflow profiles. Maximum lead temperature is rated at 260 °C for 10 seconds, and the device meets JEDEC J-STD-020D.2 requirements for MSL 1, with no moisture sensitivity limitations for dry storage or assembly.
SMP100MC-320 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-214AA, SMB
- Series:
- SMP, TRISIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Breakover:
- 390V
- Voltage - Off State:
- 320V
- Voltage - On State:
- -
- Current - Peak Pulse (8/20µs):
- 300 A
- Current - Peak Pulse (10/1000µs):
- 100 A
- Current - Hold (Ih):
- 150 mA
- Number of Elements:
- 1
- Capacitance:
- 35pF
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
SMP100MC-320 FAQ
1.How can I place an order for SMP100MC-320 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMP100MC-320 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 SMP100MC-320 reliable?
The price and inventory of SMP100MC-320 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMP100MC-320 is usually 5 days.
3.What payment methods are accepted for SMP100MC-320?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMP100MC-320 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMP100MC-320?
SMP100MC-320 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMP100MC-320 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 SMP100MC-320?
For technical support, including SMP100MC-320 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMP100MC-320 requirements.
6.How does Aetrix verify that SMP100MC-320 is sourced from the original manufacturer or authorized distributors?
All SMP100MC-320 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 SMP100MC-320 meets industry standards.
7.What is the process for return or replacement of SMP100MC-320?
All SMP100MC-320 units undergo pre-shipment inspection (PSI). If there is an issue with SMP100MC-320, 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 SMP100MC-320 part is unused and in its original packaging.
Return procedure for SMP100MC-320:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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