My Inquiry
My Account
STMicroelectronics SMP30-220
- Part No.:
- SMP30-220
- Manufacturer:
- STMicroelectronics
- Category:
- Thyristors
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMP30-220.pdf
- Description:
- THYRISTOR 220V 70A DO-214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,211
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMP30-220 from STMicroelectronics is a bidirectional Trisil™ crowbar protection device in SMA (DO-214AC) package, designed for telecom line surge protection. It features 220 V stand-off voltage (VRM), 285 V dynamic breakover voltage (VBO), 10 mA minimum holding current (IH), 20 pF typical capacitance at 50 V, and 30 A repetitive peak pulse current (10/1000 µs). It is used in xDSL and ISDN line cards to clamp lightning-induced transients.
For engineers reviewing the SMP30-220 datasheet, SMP30-220 pinout, SMP30-220 application, or SMP30-220 equivalent, key selection criteria include verified fail-safe short-circuit behavior under surge, UL497B and UL94 V0 certification, compliance with GR-1089 Core and ITU-T K20/K21 standards, and low-leakage operation below 2 µA at 198 V reverse bias.
Technical Context
The SMP30-220 operates as a voltage-triggered bidirectional thyristor, entering low-impedance conduction when transient voltage exceeds its 285 V dynamic breakover threshold. Its fail-safe short-circuit mode ensures equipment remains protected even after multiple surges.
It is thermally rated for 150 °C junction temperature and exhibits 120 °C/W junction-to-ambient thermal resistance with recommended FR4 footprint. Capacitance drops from 20 pF (at 50 V) to ~1.5× lower at higher reverse bias, preserving signal integrity on analog/digital telecom lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRM) | 220 V - Maximum continuous reverse voltage before leakage exceeds 2 µA; defines operating margin vs. line DC bias. |
| Dynamic Breakover Voltage (VBO) | 285 V - Voltage at which device triggers into conduction during fast transients (10/1000 µs); sets clamping threshold. |
| Holding Current (IH) | 10 mA min - Minimum current required to sustain conduction post-trigger; ensures reliable latching during surge decay. |
| Capacitance (C) | 20 pF typ. @ 50 V - Low parasitic capacitance preserves high-frequency signal fidelity on DSL/ISDN lines. |
| Repetitive Peak Pulse Current (IPP) | 30 A @ 10/1000 µs - Sustained surge-handling capability per IEC61000-4-5 Level 3 requirements. |
| Leakage Current (IRM) | 2 µA max @ 198 V - Ensures minimal power loss and noise injection during normal line operation. |
| Package | SMA (DO-214AC) - JEDEC-standard surface-mount package with UL94 V0 epoxy and lead-free finish. |
Pinout & Package
SMP30-220 uses a 2-terminal SMA (DO-214AC) package with cathode/anode symmetry enabling bidirectional protection. The device has no polarity marking; both terminals are functionally identical for AC line placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Triggered conduction terminal | One of two symmetrical terminals; initiates crowbar action when voltage across A–K exceeds VBO in either polarity. |
| Cathode (K) | Triggered conduction terminal | Second symmetrical terminal; completes low-impedance path during surge, forming bidirectional crowbar loop. |
Key Features
| Feature | Design Value |
|---|---|
| Fail-safe short-circuit mode | Guarantees permanent low-impedance state after end-of-life surge, preventing open-circuit failure and maintaining line protection. |
| UL497B and UL94 V0 certified | Validated for telecom surge protection per FCC Part 68 and safety-compliant resin encapsulation for flame resistance. |
| Optimized for GR-1089 Core compliance | Meets first-level (2500 V/500 A) and intra-building (1500 V/100 A) surge requirements without external series resistor in many configurations. |
| Low 20 pF capacitance @ 50 V | Minimizes insertion loss and phase distortion on broadband xDSL lines up to 30 MHz, supporting ADSL2+ and VDSL2. |
Applications
| Analog Line Card Protection | Digital xDSL Line Interface |
|---|---|
Use Scenario: Protecting POTS line interface circuitry in central office or remote terminal units against lightning-induced surges on twisted-pair copper loops. IC Role / Device Role / Timing Role: Bidirectional crowbar clamping device placed across line pair (tip/ring) to shunt >2 kV transients before they reach SLIC or codec ICs. Use Value: Prevents damage to sensitive analog front-end components while maintaining <2 µA standby leakage to avoid line detection errors. | Use Scenario: Surge suppression on VDSL2/ADSL2+ line drivers in customer premises equipment (CPE) such as DSL modems and gateways. IC Role / Device Role / Timing Role: Primary overvoltage protector located between transformer secondary and line driver IC, operating symmetrically on differential pair. Use Value: 20 pF capacitance avoids signal degradation above 17 MHz, enabling full-bandwidth operation compliant with ITU-T G.993.2. |
| ISDN BRI Terminal Protection | FCC Part 68 Type A/B Compliance |
Use Scenario: Safeguarding ISDN basic rate interface (2B+D) ports in PBX extensions, fax machines, or digital telephones connected to public switched telephone network (PSTN). IC Role / Device Role / Timing Role: Standoff-rated crowbar device mounted directly at RJ-45 connector, triggered only during >600 V transients per ITU-T K20/K21. Use Value: 220 V VRM provides 20% margin above nominal 170 V ISDN loop voltage, ensuring stable idle-state operation. | Use Scenario: Meeting mandatory FCC Part 68 lightning surge requirements for Class A (1500 V/200 A) and Class B (1000 V/25 A) telecom equipment certification. IC Role / Device Role / Timing Role: Certified UL497B primary protector enabling pass-through compliance testing without additional discrete components. Use Value: Eliminates need for external series impedance in many layouts due to intrinsic 30 A IPP rating and low thermal resistance (120 °C/W). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar telecom crowbar protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SPA1202 | Unidirectional, 120 V standoff, 150 V VBR, 100 A IPP (8/20 µs), TO-220 package | Requires back-to-back configuration for bidirectional protection; larger footprint and higher thermal mass | Select when higher single-pulse energy handling (>100 A) is needed and board space allows TO-220 mounting. |
| Bourns TISP4240M3JR-S | Bidirectional, 240 V standoff, 320 V VBO, 100 A IPP (10/1000 µs), SOT-23 package | Lower 100 pF capacitance but reduced surge lifetime; not UL497B certified | Prefer for compact designs where UL certification is secondary and peak current >30 A is critical. |
Compared with SMP30-220, SPA1202 offers higher surge current but lacks native bidirectionality and UL497B listing, while TISP4240M3JR-S provides smaller size and higher IPP but trades off long-term reliability and regulatory acceptance in carrier-grade telecom hardware.
Availability
SMP30-220 is available at Aetrix Electronics and suitable for analog line cards, xDSL modems, ISDN terminals, and FCC Part 68-certified telecom equipment requiring stable component supply and long-lifecycle support.
Supply support for SMP30-220 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 ICs for industrial, automotive, and communications markets.
The SMP30 series belongs to ST's Trisil™ telecom protection product line, engineered specifically for fail-safe, bidirectional surge suppression in voice and broadband line interfaces meeting GR-1089, ITU-T K-series, and UL497B standards.
FAQ
What is the fail-safe behavior of SMP30-220 after end-of-life surge events?
Upon exceeding its I²t rating, SMP30-220 enters a permanent low-resistance short-circuit state-verified per UL497B-ensuring continued line protection rather than open-circuit failure. This behavior is inherent to Trisil™ thyristor physics and does not require external monitoring circuitry.
Does SMP30-220 require an external series resistor for GR-1089 Core compliance?
No external series resistor is required for GR-1089 Core First Level (2500 V/500 A) compliance when used with ST-recommended PCB layout and 2-layer FR4 board. The device's 30 A IPP and thermal design allow direct integration into line interface circuits without added impedance.
How does SMP30-220 capacitance affect xDSL signal integrity?
At 20 pF typical (measured at 50 V, 1 MHz), SMP30-220 introduces negligible insertion loss (<0.2 dB) up to 30 MHz, preserving ADSL2+ and VDSL2 spectral efficiency. Capacitance decreases further at higher reverse bias, reducing impact on high-frequency return loss.
Is SMP30-220 compatible with lead-free reflow soldering processes?
Yes-SMP30-220 is qualified for lead-free reflow per JEDEC J-STD-020, with maximum lead temperature of 260 °C for 10 seconds. Its ECOPACK®-compliant SMA package uses halogen-free, UL94 V0 epoxy and meets RoHS Directive 2011/65/EU requirements.
SMP30-220 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-214AC, SMA
- Series:
- SMP, TRISIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Breakover:
- 293V
- Voltage - Off State:
- 220V
- Voltage - On State:
- -
- Current - Peak Pulse (8/20µs):
- 70 A
- Current - Peak Pulse (10/1000µs):
- 30 A
- Current - Hold (Ih):
- 150 mA
- Number of Elements:
- 1
- Capacitance:
- 20pF
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMP30-220 FAQ
1.How can I place an order for SMP30-220 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMP30-220 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 SMP30-220 reliable?
The price and inventory of SMP30-220 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMP30-220 is usually 5 days.
3.What payment methods are accepted for SMP30-220?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMP30-220 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMP30-220?
SMP30-220 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMP30-220 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 SMP30-220?
For technical support, including SMP30-220 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMP30-220 requirements.
6.How does Aetrix verify that SMP30-220 is sourced from the original manufacturer or authorized distributors?
All SMP30-220 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 SMP30-220 meets industry standards.
7.What is the process for return or replacement of SMP30-220?
All SMP30-220 units undergo pre-shipment inspection (PSI). If there is an issue with SMP30-220, 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 SMP30-220 part is unused and in its original packaging.
Return procedure for SMP30-220:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMP30-220 Tags
-
TISP4015L1AJR-S
Bourns Inc.
-
TISP4015L1BJR-S
Bourns Inc.
-
SMP100LC-270
STMicroelectronics
-
TISP4240M3BJR-S
Bourns Inc.
-
SMP100LC-35
STMicroelectronics
-
SMP100LC-65
STMicroelectronics
-
SMP100LC-8
STMicroelectronics
-
TISP4P035L1NR-S
Bourns Inc.
-
TISP4350H3BJR-S
Bourns Inc.
-
TISP4011H1BJR-S
Bourns Inc.
-
SMP100LC-400
STMicroelectronics
-
P0300SALRP
Littelfuse Inc.
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
