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Vishay General Semiconductor - Diodes Division 1.5SMC180CAHM3/H
- Part No.:
- 1.5SMC180CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC180CAHM3/H.pdf
- Description:
- TVS DIODE 154VWM 246VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,048
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Product details
Overview
1.5SMC180CAHM3/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 features a 180 V standoff voltage (VWM), 246 V maximum clamping voltage (VC) at 6.1 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the 1.5SMC180CAHM3/H datasheet, 1.5SMC180CAHM3/H pinout, 1.5SMC180CAHM3/H application, or 1.5SMC180CAHM3/H equivalent, this device delivers AEC-Q101-qualified transient suppression in SMC (DO-214AB) package with halogen-free RoHS compliance, low incremental surge resistance, and fast response time for robust ESD and lightning surge immunity.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, enabling simplified layout for AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at VWM), while MSL Level 1 rating supports lead-free reflow up to 260 °C.
The device sustains repetitive 10/1000 μs surges at 0.01% duty cycle and derates linearly above 25 °C ambient, with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W - optimized for PCB copper pad heatsinking per 8.0 mm × 8.0 mm footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 154 V - maximum continuous reverse voltage before clamping initiates; defines safe operating margin below system rail. |
| VBR (Breakdown) | 171–189 V at 1 mA - tight 5.3% tolerance ensures predictable turn-on across production lots. |
| VC (Clamping) | 246 V at IPPM = 6.1 A - limits transient voltage seen by downstream ICs during 10/1000 μs surge events. |
| PPPM | 1500 W - peak power handling capability under standardized lightning-surge waveform (IEC 61000-4-5). |
| ID (Leakage) | <1.0 μA at VWM - negligible standby current avoids loading sensitive analog or low-power circuits. |
| TJ max | +150 °C - enables operation in under-hood automotive environments and industrial enclosures. |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 0.320" x 0.246" footprint and matte tin-plated leads. |
Pinout & Package
SMC (DO-214AB) package: molded plastic case with two terminals; no polarity marking for bidirectional operation. Mounting requires 8.0 mm × 8.0 mm copper pads per terminal per Vishay's thermal recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Interchangeable terminal; symmetrical conduction allows connection without orientation check. |
| Terminal 2 | Anode/Cathode (bidirectional) | Interchangeable terminal; identical electrical behavior as Terminal 1 - no cathode band marking. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards. |
| Halogen-free & RoHS-compliant | Meets IEC 61249-2-21 and JEDEC J-STD-20 requirements for green manufacturing and end-of-life processing. |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV) surges on 2 Ω/42 Ω source impedance networks without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage stress on protected components compared to higher-ratio suppressors. |
| MSL Level 1 | Compatible with standard lead-free reflow profiles (peak 260 °C) without baking or special handling. |
Applications
| Automotive Sensor Protection | Industrial Ethernet PHY Interface |
|---|---|
|
Use Scenario: Protecting CAN FD transceivers and LIN bus nodes from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pair or supply rail to clamp transients before they reach PHY IC inputs. Use Value: Maintains signal integrity during 100 V/50 ms load dump events while adding zero propagation delay or capacitance-induced jitter. |
Use Scenario: Safeguarding RJ45 magnetics and Ethernet PHYs against ESD (IEC 61000-4-2) and surge (IEC 61000-4-5) in factory automation gateways. IC Role / Device Role / Timing Role: Primary-level surge limiter on transformer center taps and common-mode lines to prevent latch-up or gate oxide rupture. Use Value: Limits clamped voltage to 246 V during 4 kV surge, keeping PHY stress within safe SOA margins without requiring additional series impedance. |
| Telecom DSL Line Card | Renewable Energy Inverter DC Link |
|
Use Scenario: Shielding ADSL/VDSL line drivers and SLICs from lightning-induced surges on twisted-pair subscriber loops. IC Role / Device Role / Timing Role: Fast-response shunt protector across line interface transformers to divert induced common-mode energy. Use Value: Responds in <1 ps to sub-nanosecond transients, clamping to 246 V before transformer saturation or driver overvoltage failure occurs. |
Use Scenario: Suppressing switching spikes and grid fault transients on DC bus of solar inverters and battery storage systems. IC Role / Device Role / Timing Role: Parallel-connected TVS across DC link capacitors to absorb MOSFET/FET turn-off energy and protect electrolytics. Use Value: Handles 1500 W peak pulses without thermal runaway, extending capacitor lifetime and preventing catastrophic DC bus overvoltage trips. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180CA | Same VWM (154 V) and VC (246 V), but lower PPPM (600 W); SMB package (smaller footprint, higher RθJA = 110 °C/W). | Best suited for space-constrained consumer electronics where surge threat level is ≤ Level 3 (2 kV). | Select when board area is critical and full 1500 W rating is not required; verify thermal margin with reduced copper area. |
| 1.5KE180CA | Through-hole TO-204AA (DO-41); identical electrical specs but incompatible mounting and higher inductance. | Used in legacy industrial controls or prototyping where manual assembly or socketing is preferred. | Choose only for through-hole designs or repair scenarios; avoid in new SMT layouts due to parasitic inductance and placement cost. |
Compared with SMBJ180CA and 1.5KE180CA, the 1.5SMC180CAHM3/H provides optimal balance of high-power surge handling, AEC-Q101 qualification, and SMT manufacturability - making it the preferred choice for production automotive and industrial designs requiring validated reliability and 1500 W capability.
Availability
1.5SMC180CAHM3/H is available at Aetrix Electronics and suitable for automotive ECU protection, industrial Ethernet hardware, and telecom line card designs requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for 1.5SMC180CAHM3/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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The 1.5SMC Series was engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where robustness against lightning, ESD, and inductive switching surges is mandatory.
FAQ
What is the clamping voltage of the 1.5SMC180CAHM3/H under a 10/1000 μs surge?
The 1.5SMC180CAHM3/H 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 Figure 1 in Vishay document 88303 and defines the upper voltage limit imposed on protected circuitry during standardized surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the 1.5SMC180CAHM3/H suitable for automotive applications?
Yes, the 1.5SMC180CAHM3/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction with automotive-grade reliability validation. It meets requirements for under-hood and body-control module deployments, including temperature cycling, high-temperature reverse bias, and mechanical shock testing per the AEC standard.
Does the 1.5SMC180CAHM3/H have polarity markings on the package?
No, the 1.5SMC180CAHM3/H is a bidirectional TVS diode and carries no cathode band or polarity marking on the SMC (DO-214AB) case. Its symmetrical structure allows installation in either orientation - simplifying automated placement and eliminating risk of reverse-mount errors in production.
What is the maximum operating junction temperature for the 1.5SMC180CAHM3/H?
The 1.5SMC180CAHM3/H has a maximum junction temperature (TJ) of +150 °C, enabling reliable operation in high-ambient environments such as engine compartments, industrial motor drives, and enclosed telecom cabinets. Derating curves in Figure 2 of the datasheet define allowable power reduction above 25 °C ambient.
How does the 1.5SMC180CAHM3/H differ from unidirectional variants like 1.5SMC180AHM3/H?
The 1.5SMC180CAHM3/H is bidirectional (denoted by "CA"), providing symmetrical clamping in both polarities - ideal for AC signals, differential buses, or floating rails. In contrast, 1.5SMC180AHM3/H is unidirectional ("A") with a cathode band and conducts only in reverse bias, requiring correct orientation and offering no forward conduction path during positive transients.
1.5SMC180CAHM3/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:
- Discontinued at Digi-Key
- 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/H FAQ
1.How can I place an order for 1.5SMC180CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC180CAHM3/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 1.5SMC180CAHM3/H reliable?
The price and inventory of 1.5SMC180CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC180CAHM3/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC180CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC180CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC180CAHM3/H?
1.5SMC180CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC180CAHM3/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 1.5SMC180CAHM3/H?
For technical support, including 1.5SMC180CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC180CAHM3/H requirements.
6.How does Aetrix verify that 1.5SMC180CAHM3/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC180CAHM3/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 1.5SMC180CAHM3/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC180CAHM3/H?
All 1.5SMC180CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC180CAHM3/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 1.5SMC180CAHM3/H part is unused and in its original packaging.
Return procedure for 1.5SMC180CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC180CAHM3/H Tags
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