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Vishay General Semiconductor - Diodes Division 1.5SMC180CAHM3_A/I
- Part No.:
- 1.5SMC180CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC180CAHM3_A/I.pdf
- Description:
- TVS DIODE 154VWM 246VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,243
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Product details
Overview
1.5SMC180CAHM3_A/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on signal and power lines. It features 180 V standoff voltage (VWM), 207 V breakdown voltage (VBR min), 246 V clamping voltage (VC) at 6.1 A peak pulse current, and 1500 W peak pulse power capability with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC180CAHM3_A/I datasheet, 1.5SMC180CAHM3_A/I pinout, 1.5SMC180CAHM3_A/I application, or 1.5SMC180CAHM3_A/I equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), and compatibility with 8.0 mm × 8.0 mm copper pad layout per JEDEC standards.
Technical Context
This device operates as a voltage-clamped shunt protector, responding within <1 ps to transients induced by inductive switching or lightning surges. Its glass-passivated junction ensures stable avalanche behavior, while bidirectional symmetry enables protection of AC-coupled or differential lines without polarity concerns.
Rated for -65 °C to +150 °C operating junction temperature, it delivers repeatable clamping under 0.01% duty cycle conditions and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. The halogen-free, RoHS-compliant HM3 suffix confirms compliance with automotive-grade material requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 154 V - maximum continuous reverse voltage before conduction begins; defines safe operating margin below clamping threshold |
| VBR (Breakdown) | 171–189 V at 1 mA - guaranteed avalanche initiation range; ensures predictable turn-on during overvoltage events |
| VC (Clamping) | 246 V at IPPM = 6.1 A - peak voltage seen by protected circuit during 10/1000 μs surge; determines stress on downstream components |
| PPPM | 1500 W - energy-handling capacity under standardized surge waveform; supports robust protection in harsh EMI environments |
| RθJA | 75 °C/W - thermal resistance from junction to ambient; requires minimum 8.0 mm × 8.0 mm copper pads for rated power dissipation |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive and industrial control cabinet applications |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements including HTGB, H3TRB, and temperature cycling |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, matte tin-plated terminals solderable per J-STD-002 and JESD 22-B102. No polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode / Anode (symmetrical) | Bidirectional avalanche junction | Both terminals function identically; no cathode band marking - enables placement without orientation check in automated assembly |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Handles high-energy transients (e.g., ISO 7637-2 Pulse 5a) without degradation when mounted on specified 8.0 mm × 8.0 mm pads |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain and body electronics; includes HTGB, H3TRB, and mechanical shock testing per AEC standard |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), improving protection margin for sensitive CMOS interfaces |
| MSL Level 1, 260 °C peak | Compatible with standard lead-free reflow profiles without preconditioning; eliminates moisture-related popcorning risk |
| Halogen-free & RoHS-compliant | Fulfills EU Directive 2011/65/EU and automotive ELV requirements; supports sustainability goals in Tier 1 supply chains |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly at connector entry point to clamp surges before reaching signal conditioning ICs. Use Value: Maintains signal integrity under ISO 16750-2 Class III/IV tests; prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers and ADCs. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers against field-wiring induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input terminals, coordinated with series current-limiting resistors and filtering capacitors. Use Value: Enables compliance with IEC 61000-4-5 Level 3 (2 kV line-earth) while preserving measurement accuracy and long-term calibration stability. |
| Telecom Line Card Protection | Consumer Appliance Motor Control |
Use Scenario: Shielding Ethernet PHYs and DSL line drivers from lightning-induced surges on outdoor-facing ports in access equipment. IC Role / Device Role / Timing Role: First-stage TVS in multi-tier protection scheme, absorbing bulk surge energy ahead of GDT or polymer PTC secondary devices. Use Value: Limits let-through voltage to <250 V, preventing damage to 2.5 V/3.3 V PHY ICs and maintaining IEEE 802.3 compliance after repeated strikes. |
Use Scenario: Suppressing commutation spikes from brushed DC motors and triac-driven AC loads in washing machines, HVAC systems, and power tools. IC Role / Device Role / Timing Role: Bidirectional clamp across motor terminals or relay coil to quench inductive kickback exceeding 300 V. Use Value: Extends relay contact life and prevents MCU reset caused by conducted noise; validated for 100,000+ surge cycles per IEC 61000-4-4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180CA | Lower PPPM (600 W), same VWM/VBR range, SMB package (smaller footprint, higher RθJA = 110 °C/W) | Limited to lower-energy surges (IEC 61000-4-5 Level 2); unsuitable for automotive load dump where 1500 W is required | Select when board space is constrained and surge threat level is moderate (e.g., internal PCB traces only) |
| 1.5KE180CA | Same electrical specs but DO-201AE axial package; higher mounting inductance, not SMT-compatible | Requires through-hole assembly; incompatible with automated pick-and-place; not suitable for high-frequency transient suppression | Choose only for legacy repair or prototyping where SMT infrastructure is unavailable |
Compared with SMBJ180CA and 1.5KE180CA, the 1.5SMC180CAHM3_A/I delivers superior surge handling in an AEC-Q101-qualified SMT package, enabling compact, high-reliability designs for automotive and industrial environments where both power density and qualification rigor are mandatory.
Availability
1.5SMC180CAHM3_A/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC manufacturing, and telecom infrastructure projects requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1.5SMC180CAHM3_A/I 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-energy transient suppression in automotive, industrial, and telecom systems, engineered to meet stringent AEC-Q101, IEC 61000-4-5, and UL 497B requirements with consistent clamping behavior across temperature and lifetime.
FAQ
What is the clamping voltage of the 1.5SMC180CAHM3_A/I under a 10/1000 μs surge?
The 1.5SMC180CAHM3_A/I clamps to a maximum of 246 V when subjected to its rated peak pulse current of 6.1 A with a 10/1000 μs waveform. This value is measured per Fig. 1 and Fig. 3 in Vishay Document 88303 and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The 1.5SMC180CAHM3_A/I maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C).
Is the 1.5SMC180CAHM3_A/I suitable for automotive applications?
Yes, the 1.5SMC180CAHM3_A/I is AEC-Q101 qualified (indicated by the HM3 suffix) and specifically tested for automotive use cases including load dump, jump start, and ISO 7637-2 transient immunity. Its halogen-free construction, MSL Level 1 rating, and validation across HTGB, H3TRB, and temperature cycling make it appropriate for engine control units, body modules, and ADAS sensor interfaces. The 1.5SMC180CAHM3_A/I meets all requirements for under-hood deployment per AEC-Q101 Rev D.
How does the bidirectional configuration of the 1.5SMC180CAHM3_A/I affect circuit design?
The 1.5SMC180CAHM3_A/I has symmetrical avalanche characteristics in both directions, eliminating polarity sensitivity during placement and enabling protection of AC-coupled lines, differential buses (e.g., RS-485), or ungrounded signal paths without external diode pairing. Unlike unidirectional TVS diodes, the 1.5SMC180CAHM3_A/I requires no cathode band identification - simplifying automated assembly and reducing BOM count in balanced interface designs.
What PCB layout guidance applies to the 1.5SMC180CAHM3_A/I?
Vishay specifies mounting on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve rated 1500 W pulse power and thermal performance. Trace inductance must be minimized - keep leads short and wide, avoid vias in series with TVS terminals, and route protected traces directly to the 1.5SMC180CAHM3_A/I with minimal loop area. The 1.5SMC180CAHM3_A/I datasheet (88303, page 5) provides exact SMC (DO-214AB) pad dimensions and thermal derating curves.
Does the 1.5SMC180CAHM3_A/I have a defined junction capacitance value?
No junction capacitance (CJ) value is specified for the 1.5SMC180CAHM3_A/I in the official Vishay datasheet (Document 88303). While Figure 4 shows typical CJ vs. VR curves for unidirectional variants, bidirectional parts like the 1.5SMC180CAHM3_A/I lack published capacitance data due to measurement complexity at zero bias. For high-speed data line protection, designers should verify signal integrity via simulation or empirical testing - the 1.5SMC180CAHM3_A/I is not recommended for USB 2.0 or HDMI interfaces without characterization.
1.5SMC180CAHM3_A/I 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):
- 154V
- Voltage - Breakdown (Min):
- 171V
- Voltage - Clamping (Max) @ Ipp:
- 246V
- Current - Peak Pulse (10/1000µs):
- 6.1A
- 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)
1.5SMC180CAHM3_A/I FAQ
1.How can I place an order for 1.5SMC180CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC180CAHM3_A/I 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 1.5SMC180CAHM3_A/I reliable?
The price and inventory of 1.5SMC180CAHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC180CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC180CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC180CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC180CAHM3_A/I?
1.5SMC180CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC180CAHM3_A/I 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 1.5SMC180CAHM3_A/I?
For technical support, including 1.5SMC180CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC180CAHM3_A/I requirements.
6.How does Aetrix verify that 1.5SMC180CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC180CAHM3_A/I 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 1.5SMC180CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC180CAHM3_A/I?
All 1.5SMC180CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC180CAHM3_A/I, 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 1.5SMC180CAHM3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC180CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC180CAHM3_A/I Tags
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