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Vishay General Semiconductor - Diodes Division 1.5SMC220CAHM3_A/H
- Part No.:
- 1.5SMC220CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC220CAHM3_A/H.pdf
- Description:
- TVS DIODE 185VWM 328VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,491
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Product details
Overview
1.5SMC220CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It delivers 1500 W peak pulse power (10/1000 μs), clamps transients up to 328 V at 4.6 A, and features a 185 V stand-off voltage (VWM) with ±5% tolerance - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the 1.5SMC220CAHM3_A/H datasheet, 1.5SMC220CAHM3_A/H pinout, 1.5SMC220CAHM3_A/H application, or 1.5SMC220CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMC (DO-214AB) package compatibility, and thermal resistance (RθJA = 75 °C/W) for board-level transient immunity design.
Technical Context
This TVS diode operates symmetrically in both polarities, enabling robust protection against voltage reversals without polarity sensitivity. Its glass-passivated junction ensures stable breakdown behavior under repetitive 10/1000 μs surges at 0.01% duty cycle, with clamping voltage tightly specified at 328 V (max) at IPPM = 4.6 A.
Designed for surface-mount automation, it meets J-STD-020 MSL Level 1 (peak reflow 260 °C), uses matte tin-plated leads, and supports halogen-free, RoHS-compliant manufacturing per Vishay HM3 specification. Junction temperature range spans –65 °C to +150 °C, supporting under-hood automotive and industrial ambient conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 1500 W - sustains high-energy lightning-induced surges without failure |
| Stand-off Voltage (VWM) | 185 V - maximum continuous reverse voltage before clamping initiates |
| Breakdown Voltage (VBR) | 209–231 V at 1 mA - precise, symmetric conduction threshold in both directions |
| Clamping Voltage (VC) | 328 V at 4.6 A - limits transient voltage seen by downstream ICs or MOSFETs |
| Peak Pulse Current (IPPM) | 4.6 A - peak surge current handled at rated clamping voltage |
| Junction Temperature Range | –65 °C to +150 °C - enables deployment in automotive engine compartments and industrial enclosures |
| Thermal Resistance (RθJA) | 75 °C/W - defines PCB copper pad thermal design requirements for sustained power dissipation |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional - no polarity marking; symmetrical two-terminal construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity - no fixed polarity |
| Terminal 2 | Anode / Cathode (bidirectional) | Electrically identical to Terminal 1; forms symmetrical clamping path across protected line |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal/power lines without polarity concerns |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global OEM production and end-of-life handling |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a) |
| MSL Level 1 moisture sensitivity | Allows standard SMT reflow without baking - reduces manufacturing overhead and risk of popcorning |
Applications
| Automotive Sensor Interface Protection | Industrial RS-485 Data Line Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus sensors (e.g., pressure, temperature) from load-dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential pair or supply rail to clamp ±200 V surges within nanoseconds. Use Value: Prevents latch-up or gate oxide damage in analog front-end amplifiers and microcontroller I/O pins operating near 185 V VWM margin. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs exposed to ground potential differences and motor drive noise. IC Role / Device Role / Timing Role: Placed between A/B lines and GND to suppress common-mode surges while preserving signal integrity up to 10 Mbps. Use Value: Maintains data link uptime by limiting transient voltage to ≤328 V, well below transceiver absolute maximum ratings (e.g., THVD1550: ±70 V fault protection). |
| Telecom DSL Line Surge Protection | AC-DC Adapter Input Stage Clamping |
|
Use Scenario: Front-end protection of ADSL/VDSL line cards against lightning-induced surges entering via twisted-pair telephone lines. IC Role / Device Role / Timing Role: Bidirectional TVS connected line-to-line and line-to-ground to absorb multi-kV common-mode events per ITU-T K.20/K.21. Use Value: Survives 10/1000 μs surges up to 1500 W without degradation, ensuring >100,000 surge cycles in field-deployed equipment. |
Use Scenario: Secondary-side overvoltage suppression in offline SMPS after rectification, protecting bulk capacitor and controller ICs. IC Role / Device Role / Timing Role: Clamps transient spikes from transformer leakage inductance or MOV failure, placed across DC bus rails. Use Value: Limits voltage excursion to 328 V during 4.6 A surges, preventing overvoltage shutdown or catastrophic failure of 400 V-rated electrolytic capacitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ220CA | Lower peak power (600 W), same VWM (185 V), SMB package (smaller footprint, higher RθJA) | Not suitable for 1500 W surge environments; limited to lower-energy IEC 61000-4-5 level 3 | Select when board space is constrained and surge threat level is ≤600 W (e.g., consumer USB-C PD ports) |
| 1.5KE220CA | Same 1500 W rating but axial DO-15 package; higher RθJA (~100 °C/W); not SMT-compatible | Requires through-hole assembly; incompatible with automated SMT lines and high-density layouts | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ220CA and 1.5KE220CA, the 1.5SMC220CAHM3_A/H uniquely combines 1500 W SMT capability, AEC-Q101 qualification, and halogen-free compliance - making it the preferred choice for volume automotive and industrial PCBs requiring zero layout change and full supply-chain traceability.
Availability
1.5SMC220CAHM3_A/H is available at Aetrix Electronics and suitable for automotive ECU designs, industrial communication gateways, and telecom infrastructure requiring stable component supply with full AEC-Q101 documentation and halogen-free compliance.
Supply support for 1.5SMC220CAHM3_A/H 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 and application-specific performance.
The 1.5SMC Series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for repeatable clamping, low leakage, and robust surge survivability in harsh environments.
FAQ
What does the "HM3" suffix indicate in 1.5SMC220CAHM3_A/H?
The HM3 suffix in 1.5SMC220CAHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It confirms compliance with automotive reliability standards including HTGB, HTRB, and temperature cycling, and guarantees absence of brominated flame retardants - critical for Tier 1 automotive supply chains and green manufacturing programs.
Is 1.5SMC220CAHM3_A/H unidirectional or bidirectional?
1.5SMC220CAHM3_A/H is a bidirectional TVS diode, as confirmed by the "CA" suffix and its symmetric electrical characteristics. It provides identical clamping behavior for positive and negative transients, with no cathode band marking - ideal for protecting AC-coupled lines, differential buses, or floating supplies where polarity reversal may occur.
What is the maximum clamping voltage of 1.5SMC220CAHM3_A/H at its rated peak pulse current?
The maximum clamping voltage (VC) of 1.5SMC220CAHM3_A/H is 328 V at 4.6 A peak pulse current (IPPM), measured under standardized 10/1000 μs waveform conditions. This value defines the upper voltage limit imposed on protected circuitry during worst-case surge events, directly informing system-level overvoltage margin analysis.
Can 1.5SMC220CAHM3_A/H replace 1.5SMC220A in a design?
No - 1.5SMC220CAHM3_A/H is bidirectional, while 1.5SMC220A is unidirectional. Substituting them requires verifying circuit polarity constraints: using the bidirectional 1.5SMC220CAHM3_A/H on a unidirectionally biased rail may cause unintended conduction. Always validate biasing, leakage, and clamping symmetry before interchange.
What PCB pad layout is recommended for optimal thermal performance of 1.5SMC220CAHM3_A/H?
Vishay specifies mounting 1.5SMC220CAHM3_A/H on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve rated 1500 W pulse power and RθJA = 75 °C/W. Reducing pad area increases junction temperature rise and de-rates surge capability - refer to Figure 2 in Document 88303 for derating curves versus ambient and pad size.
1.5SMC220CAHM3_A/H 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 185V
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC220CAHM3_A/H FAQ
1.How can I place an order for 1.5SMC220CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC220CAHM3_A/H 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 1.5SMC220CAHM3_A/H reliable?
The price and inventory of 1.5SMC220CAHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC220CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC220CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC220CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC220CAHM3_A/H?
1.5SMC220CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC220CAHM3_A/H 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 1.5SMC220CAHM3_A/H?
For technical support, including 1.5SMC220CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC220CAHM3_A/H requirements.
6.How does Aetrix verify that 1.5SMC220CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC220CAHM3_A/H 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 1.5SMC220CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC220CAHM3_A/H?
All 1.5SMC220CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC220CAHM3_A/H, 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 1.5SMC220CAHM3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC220CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC220CAHM3_A/H Tags
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