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Vishay General Semiconductor - Diodes Division SM15T220CA-M3/57T
- Part No.:
- SM15T220CA-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T220CA-M3/57T.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,351
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Product details
Overview
SM15T220CA-M3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 188 V stand-off voltage (VWM), 220 V breakdown voltage (VBR), and 328 V maximum clamping voltage (VC) at 4.6 A peak pulse current - used to protect automotive sensor signal lines and industrial I/O interfaces against lightning-induced surges.
For engineers reviewing the SM15T220CA-M3/57T datasheet, SM15T220CA-M3/57T pinout, SM15T220CA-M3/57T application, or SM15T220CA-M3/57T equivalent, key selection criteria include bidirectional clamping symmetry, low clamping ratio (VC/VBR = 1.49), halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification readiness via HM3 variant.
Technical Context
This bidirectional TVS diode operates symmetrically in both polarities, with identical VBR (209–231 V), VWM (188 V), and VC (328 V at 4.6 A) specifications in forward and reverse directions. Its glass-passivated junction ensures stable breakdown and low leakage (<1 μA at VWM).
Designed for high-energy transient suppression, it delivers 1500 W peak pulse power under standardized 10/1000 μs waveform, with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W - enabling reliable operation up to TJ = 150 °C without active cooling on standard PCB copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 188 V - maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR (min/max) | 209 V / 231 V - breakdown occurs within this band at 1 mA test current; ensures predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 328 V at 4.6 A - clamping voltage during full-rated 10/1000 μs surge; limits voltage seen by downstream ICs to safe level. |
| PPPM | 1500 W - peak pulse power handling capability; supports protection against lightning-induced transients per IEC 61000-4-5. |
| TJ max. | +150 °C - maximum junction temperature; allows use in under-hood automotive environments and industrial enclosures. |
| Package | SMC (DO-214AB) - surface-mount package with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place. |
Pinout & Package
SM15T220CA-M3/57T uses the SMC (DO-214AB) package - a molded plastic case with two coplanar matte tin-plated leads, meeting J-STD-002 solderability and JESD 22-B102 reliability standards. Bidirectional construction means no polarity marking; both terminals are functionally identical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Accepts surge current during negative half-cycle; symmetrical with cathode due to bidirectional design. |
| Cathode | Transient current entry (positive polarity) | Accepts surge current during positive half-cycle; electrically identical to anode in CA-suffix devices. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and leakage performance in both directions - eliminates need for polarity-aware layout in AC-coupled or floating signal paths. |
| 1500 W peak pulse rating | Withstands 10/1000 μs surges up to 4.6 A without degradation - meets Level 4 IEC 61000-4-5 immunity requirements for industrial equipment. |
| Halogen-free & RoHS-compliant (M3) | Meets JEDEC J-STD-20 MSL Level 1 and JESD 201 Class 2 whisker resistance - suitable for lead-free reflow and long-term reliability in consumer and automotive applications. |
| Low clamping ratio | VC/VBR ≈ 1.49 - minimizes overvoltage stress on protected ICs compared to higher-ratio suppressors, improving system-level robustness. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface to shunt surge energy before reaching signal conditioning circuitry. Use Value: Prevents latch-up or permanent damage to 5 V/3.3 V microcontrollers and analog front-ends during ISO 7637-2 pulse 1/2/5a testing. | Use Scenario: Safeguarding PLC digital input modules connected to 24 V DC field wiring exposed to inductive switching transients from solenoids and contactors. IC Role / Device Role / Timing Role: Primary overvoltage protection device mounted adjacent to terminal block to absorb >1 kV transients before they propagate into isolation barriers. Use Value: Enables compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) without additional RC snubbers or MOVs. |
| Telecom Line Protection | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHYs and PoE injectors from induced surges on unshielded twisted-pair cabling in building automation networks. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), providing fast-response clamping for residual transients below 1 kV. Use Value: Reduces clamping time to <1 ns and holds line voltage below 350 V during 10/1000 μs surges - preserving PHY integrity and link stability. | Use Scenario: Guarding AC-DC adapter primary-side rectifier outputs against mains-borne surges entering via L/N lines. IC Role / Device Role / Timing Role: Parallel-connected TVS across bulk capacitor to clamp voltage spikes caused by lightning strikes on utility grid. Use Value: Limits peak voltage to 328 V, preventing overvoltage failure of 400 V-rated electrolytic capacitors and MOSFETs in offline SMPS designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ220CA | Same SMC package, 1500 W rating, but VWM = 185 V and VC = 339 V at 4.5 A - slightly higher clamping voltage and lower stand-off margin. | Valid for general-purpose surge protection but less optimal in systems requiring tight VWM margin above 188 V nominal rails. | Select SMAJ220CA only if board space constraints require identical footprint and VWM tolerance ≥3 V is acceptable. |
| ON Semiconductor 1.5KE220CA | Through-hole DO-201 package, same VBR/VC specs, but larger size, higher inductance, and lower thermal performance (RθJA ≈ 100 °C/W). | Suitable for prototyping or legacy through-hole designs, but not for high-density SMT layouts or thermally constrained applications. | Choose 1.5KE220CA only when SMT assembly is unavailable or mechanical mounting requires axial leads. |
Compared with SMAJ220CA and 1.5KE220CA, SM15T220CA-M3/57T offers superior thermal dissipation (RθJA = 75 °C/W), tighter VWM tolerance (188 V vs. 185 V), and halogen-free compliance - making it preferred for automotive and high-reliability industrial production.
Availability
SM15T220CA-M3/57T is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom line surge suppression requiring stable component supply, consistent M3-grade material compliance, and traceable lot-level documentation.
Supply support for SM15T220CA-M3/57T 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, precision, and application-specific optimization.
The SM15T Series is designed specifically for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where 1500 W surge handling, bidirectional symmetry, and AEC-Q101 readiness are critical.
FAQ
What is the clamping voltage of SM15T220CA-M3/57T at its rated peak pulse current?
The SM15T220CA-M3/57T has a maximum clamping voltage (VC) of 328 V at 4.6 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88380 and reflects worst-case device behavior at TA = 25 °C with recommended pad layout.
Is SM15T220CA-M3/57T suitable for automotive applications?
Yes, SM15T220CA-M3/57T is halogen-free and RoHS-compliant (M3 suffix), and belongs to the AEC-Q101-qualified SM15T family. While the base M3 variant is commercial grade, the HM3 suffix version (e.g., SM15T220CAHM3_A/H) is fully AEC-Q101 qualified - confirming suitability for automotive under-hood and body-control module applications.
How does the bidirectional design of SM15T220CA-M3/57T affect PCB layout?
The bidirectional design of SM15T220CA-M3/57T eliminates polarity marking - both terminals are functionally identical, allowing placement without orientation constraints. This simplifies layout for AC-coupled or floating signal lines and avoids errors in high-volume SMT assembly, unlike unidirectional variants that require cathode-band alignment.
What is the thermal resistance of SM15T220CA-M3/57T, and how does it impact derating?
SM15T220CA-M3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads. Derating follows Figure 2 in document 88380: at 75 °C ambient, maximum allowable PPPM drops to ~850 W - requiring careful thermal design in enclosed or high-temperature environments.
Does SM15T220CA-M3/57T meet any industry surge immunity standards out of the box?
SM15T220CA-M3/57T is engineered to support compliance with IEC 61000-4-5 (surge immunity) Level 4 (4 kV line-earth, 2 kV line-line) and IEC 61000-4-4 (EFT) when applied with proper PCB layout and system-level filtering. Its 1500 W rating and 328 V clamping enable robust protection, but full system certification requires validation in the end application.
SM15T220CA-M3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- SM15T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 188V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 328V
- Current - Peak Pulse (10/1000µs):
- 4.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SM15T220CA-M3/57T FAQ
1.How can I place an order for SM15T220CA-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T220CA-M3/57T 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 SM15T220CA-M3/57T reliable?
The price and inventory of SM15T220CA-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T220CA-M3/57T is usually 5 days.
3.What payment methods are accepted for SM15T220CA-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T220CA-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T220CA-M3/57T?
SM15T220CA-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T220CA-M3/57T 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 SM15T220CA-M3/57T?
For technical support, including SM15T220CA-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T220CA-M3/57T requirements.
6.How does Aetrix verify that SM15T220CA-M3/57T is sourced from the original manufacturer or authorized distributors?
All SM15T220CA-M3/57T 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 SM15T220CA-M3/57T meets industry standards.
7.What is the process for return or replacement of SM15T220CA-M3/57T?
All SM15T220CA-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SM15T220CA-M3/57T, 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 SM15T220CA-M3/57T part is unused and in its original packaging.
Return procedure for SM15T220CA-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T220CA-M3/57T Tags
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