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Vishay General Semiconductor - Diodes Division 1.5SMC22A-M3/57T
- Part No.:
- 1.5SMC22A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC22A-M3/57T.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:7,165
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Product details
Overview
1.5SMC22A-M3/57T from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMC (DO-214AB) package, rated for 22 V breakdown voltage (VBR = 20.9–23.1 V at 1 mA), 18.8 V stand-off voltage (VWM), and 30.6 V maximum clamping voltage (VC) at 49 A peak pulse current - designed to protect power rails and signal lines in automotive and industrial electronics against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5SMC22A-M3/57T datasheet, 1.5SMC22A-M3/57T pinout, 1.5SMC22A-M3/57T application, or 1.5SMC22A-M3/57T equivalent, this part delivers verified 1500 W peak pulse power (10/1000 µs), halogen-free RoHS compliance, MSL Level 1 moisture sensitivity, and AEC-Q101 qualification readiness - critical for high-reliability board-level ESD and surge protection design.
Technical Context
The 1.5SMC22A-M3/57T operates as a unidirectional clamping device with cathode-band polarity marking, leveraging a glass-passivated silicon junction for fast response (<1 ns) and low incremental surge resistance. Its thermal design supports 150 °C maximum junction temperature and 75 °C/W junction-to-ambient thermal resistance on standard 8 mm × 8 mm copper pads.
It meets UL 497B recognition (QVGQ2) and JESD201 Class 2 whisker resistance, with 6.5 W steady-state power dissipation and 200 A non-repetitive forward surge rating (8.3 ms half-sine). The device is optimized for automated SMT placement and reflow-compatible up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at 1 mA - defines precise voltage threshold where clamping begins under controlled test conditions |
| VWM | 18.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA; sets safe DC bias limit |
| VC @ IPPM | 30.6 V at 49 A - clamped voltage during 1500 W surge event; determines protected circuit's worst-case overvoltage exposure |
| PPPM | 1500 W (10/1000 µs waveform) - peak surge energy handling capacity for transient immunity per IEC 61000-4-5 |
| IFSM | 200 A (8.3 ms half-sine) - single-event surge current capability for inductive load switching protection |
| TJ max. | +150 °C - enables operation in under-hood automotive and industrial environments without derating below ambient |
| Package | SMC (DO-214AB) - standardized 2-pin surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, 2-terminal device with cathode band marking on unidirectional variants. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H); terminals are matte tin-plated, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward conduction mode | Connected to lower-potential side of protected line; enables bidirectional surge shunting when used with complementary devices |
| Cathode | Current exit point in forward conduction; clamping reference node | Marked by band; connected to higher-potential rail (e.g., VCC or signal line); defines polarity-sensitive clamping direction |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V/24 V systems |
| 30.6 V clamping voltage at 49 A | Limits transient overvoltage to within safe margin of 3.3 V/5 V/12 V IC supply rails during surge events |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets IPC-1752A material declaration requirements and EU environmental compliance mandates |
| MSL Level 1, 260 °C reflow compatible | Eliminates pre-bake requirement and supports standard lead-free assembly processes |
| AEC-Q101 qualification path | Supports automotive-grade reliability validation (via HM3/HE3 variants) for engine control, body electronics, and ADAS |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-supplied ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to clamp positive-going surges above 18.8 V. Use Value: Limits peak voltage to ≤30.6 V during 1500 W transients, preventing damage to downstream PMICs and microcontrollers. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation PLC modules. IC Role / Device Role / Timing Role: Low-capacitance TVS on signal lines (e.g., 4–20 mA, 0–10 V) to absorb ESD and cable discharge events. Use Value: Sub-1 ns response ensures clamping occurs before sensitive op-amps or ADC inputs saturate or latch up. |
| Telecom Line Card Surge Suppression | Consumer Power Adapter Input Protection |
Use Scenario: Secondary-side transient suppression on PoE-powered Ethernet switches and base stations. IC Role / Device Role / Timing Role: Standoff-rated TVS on 48 V DC distribution bus to handle induced lightning surges. Use Value: 18.8 V VWM allows stable operation across 48 V ±10% input range while clamping to 30.6 V during 10/1000 µs threats. |
Use Scenario: Input-stage surge protection in AC/DC adapters for smart home hubs and IoT gateways. IC Role / Device Role / Timing Role: Primary-side TVS on rectified DC bus to absorb differential-mode transients from mains coupling. Use Value: 200 A IFSM rating withstands repetitive inrush and switching spikes without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A (ON Semiconductor) | Same VBR range (20.9–23.1 V), but SMB package (smaller footprint, lower PPPM = 600 W) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 compliance | Select when board space is constrained and surge threat level is ≤600 W |
| 1.5KE22A (Littelfuse) | Through-hole DO-201 package, identical electrical specs, higher thermal mass but incompatible with SMT | Requires manual or wave-solder assembly; not suitable for high-density automated production | Select only for legacy through-hole designs or prototyping where rework tolerance is prioritized |
Compared with SMBJ22A and 1.5KE22A, the 1.5SMC22A-M3/57T uniquely balances 1500 W surge capability, SMT compatibility, halogen-free compliance, and AEC-Q101 scalability - making it the optimal choice for volume automotive and industrial PCBs requiring both performance and manufacturability.
Availability
1.5SMC22A-M3/57T is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, telecom line card surge suppression, and consumer power adapter input protection requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC22A-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness, repeatability, and regulatory compliance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC22A-M3/57T under a 1500 W surge?
The 1.5SMC22A-M3/57T clamps to a maximum of 30.6 V at 49 A peak pulse current (10/1000 µs waveform), which corresponds to its rated 1500 W peak pulse power. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuits during surge events. The 1.5SMC22A-M3/57T maintains this clamping performance across its specified operating temperature range.
Is the 1.5SMC22A-M3/57T suitable for automotive applications?
Yes - the 1.5SMC22A-M3/57T is halogen-free, RoHS-compliant, and built on Vishay's AEC-Q101-qualified platform (with HM3 suffix variants available). While the M3 suffix itself denotes commercial-grade halogen-free construction, its thermal, surge, and reliability characteristics - including 150 °C TJ max, 200 A IFSM, and UL 497B recognition - align with automotive subsystem requirements such as body control modules and infotainment power supplies.
What does the "M3" suffix indicate in 1.5SMC22A-M3/57T?
The "M3" suffix in 1.5SMC22A-M3/57T specifies halogen-free, RoHS-compliant construction meeting IPC-1752A material declarations and JESD201 Class 2 whisker resistance. It distinguishes the part from E3 (standard RoHS) and HM3 (AEC-Q101 qualified + halogen-free) variants. The "/57T" denotes packaging: 850-piece 7-inch plastic tape-and-reel delivery.
How does the 1.5SMC22A-M3/57T compare to bidirectional TVS diodes like 1.5SMC22CA?
The 1.5SMC22A-M3/57T is unidirectional and protects against positive-going transients only, with polarity-sensitive mounting (cathode band to higher potential). In contrast, 1.5SMC22CA provides symmetrical clamping for AC-coupled or floating lines. The 1.5SMC22A-M3/57T offers identical VBR, VC, and PPPM ratings but requires correct orientation - making it preferred for DC power rail protection where polarity is fixed and cost/performance optimization is critical.
What is the maximum operating temperature for the 1.5SMC22A-M3/57T?
The 1.5SMC22A-M3/57T has a maximum junction temperature (TJ) of +150 °C and an operating junction/storage temperature range of –65 °C to +150 °C. Its thermal resistance is 75 °C/W (junction-to-ambient) on standard 8 mm × 8 mm copper pads, enabling reliable operation in under-hood automotive and industrial control cabinet environments without forced cooling.
1.5SMC22A-M3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 49A
- 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)
1.5SMC22A-M3/57T FAQ
1.How can I place an order for 1.5SMC22A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC22A-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 1.5SMC22A-M3/57T reliable?
The price and inventory of 1.5SMC22A-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 1.5SMC22A-M3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC22A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC22A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC22A-M3/57T?
1.5SMC22A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC22A-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 1.5SMC22A-M3/57T?
For technical support, including 1.5SMC22A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC22A-M3/57T requirements.
6.How does Aetrix verify that 1.5SMC22A-M3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC22A-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 1.5SMC22A-M3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC22A-M3/57T?
All 1.5SMC22A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC22A-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 1.5SMC22A-M3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC22A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC22A-M3/57T Tags
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