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Vishay General Semiconductor - Diodes Division 1.5SMC180CAHM3/I
- Part No.:
- 1.5SMC180CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC180CAHM3/I.pdf
- Description:
- TVS DIODE 154VWM 246VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,644
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Product details
Overview
1.5SMC180CAHM3/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 180 V standoff voltage (VWM), 246 V clamping voltage (VC) at 6.1 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line cards.
For engineers reviewing the 1.5SMC180CAHM3/I datasheet, 1.5SMC180CAHM3/I pinout, 1.5SMC180CAHM3/I application, or 1.5SMC180CAHM3/I equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification for automotive use, SMC (DO-214AB) package thermal performance, and compliance with UL 497B surge protector standards.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping behavior during positive and negative transients - critical for AC-coupled or floating signal paths. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while the low incremental surge resistance enables tight voltage regulation under high-current surges.
The device is rated for 150 °C maximum junction temperature and exhibits a typical thermal resistance of 75 °C/W (junction-to-ambient) on standard 8.0 mm × 8.0 mm copper pads. It meets J-STD-020 MSL Level 1 and is halogen-free, RoHS-compliant, and qualified to AEC-Q101 for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 154 V - Maximum continuous reverse voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 171–189 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on under fast-rising transients. |
| VC (Clamping Voltage) | 246 V at 6.1 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; directly limits stress on downstream ICs. |
| PPPM (Peak Pulse Power) | 1500 W - Sustains high-energy lightning or ESD-induced surges without failure; validated per IEC 61000-4-5 waveform. |
| ID (Reverse Leakage) | <1.0 μA at 154 V - Negligible standby current; avoids signal distortion or battery drain in always-on systems. |
| TJ max. | 150 °C - Enables operation in under-hood automotive environments and industrial enclosures without derating. |
| Package | SMC (DO-214AB) - Surface-mount footprint with 7.75 mm × 6.22 mm body and 2.06 mm height; supports automated placement and 260 °C reflow. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads; meets UL 94 V-0 flammability rating and JESD 22-B102 solderability requirements. Bidirectional construction means no polarity marking - terminals are functionally interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Both terminals conduct identically during positive or negative overvoltage events; no cathode band marking required. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines, differential buses (e.g., RS-485), or ungrounded sensors without polarity concerns. |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, ADAS camera links, and infotainment power rails. |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges on 12 V/24 V systems without degradation. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and automotive material compliance requirements (e.g., GMW3172). |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profiles up to 260 °C peak - eliminates baking requirements. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and ground, absorbing transients before they reach MCU analog inputs or transceivers. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V sensor interface ICs during 12 V system load dump events (up to 120 V/400 ms). |
Use Scenario: Safeguarding half-duplex RS-485 transceivers in factory automation PLCs exposed to motor switching noise and ground potential differences. IC Role / Device Role / Timing Role: Differential-line TVS connected across A/B bus lines and referenced to local ground, suppressing common-mode surges. Use Value: Maintains data integrity by limiting bus voltage excursion to ≤246 V during 1 kV/500 A surge events, preserving receiver input tolerance. |
| Telecom Line Card Surge Suppression | Power Supply Input Protection |
Use Scenario: Front-end protection of PoE-powered Ethernet switches and DSLAM line cards against lightning-induced surges on twisted-pair cables. IC Role / Device Role / Timing Role: Primary-level TVS mounted at RJ-45 connector, shunting induced common-mode energy to chassis ground. Use Value: Survives repeated 10/700 μs telecom surges (IEC 61000-4-5) up to 6 kV without parameter shift or leakage increase. |
Use Scenario: Secondary-side clamping on 24 V DC input rails of embedded controllers and programmable logic relays. IC Role / Device Role / Timing Role: Parallel-connected TVS across input capacitor, clamping inductive kickback from relay coils or solenoid drivers. Use Value: Limits transient overshoot to 246 V, preventing overvoltage shutdown or gate oxide damage in downstream DC-DC controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient 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 = 85 °C/W). | Limited to lower-energy surges (e.g., ESD-only); unsuitable for IEC 61000-4-5 Level 4 or load dump. | Select when board space is constrained and surge threat level is Class 2 or lower. |
| 1.5KE180CA | Through-hole DO-201 package; identical electrical specs but incompatible with SMT assembly and higher thermal resistance (RθJA = 100 °C/W). | Requires manual or wave-solder process; not viable for high-volume automated production or compact PCBs. | Choose only for legacy through-hole designs or prototyping where rework flexibility outweighs production efficiency. |
Compared with SMBJ180CA and 1.5KE180CA, the 1.5SMC180CAHM3/I delivers full 1500 W surge handling in an AEC-Q101-qualified SMT package - enabling automotive-grade reliability, automated manufacturing, and superior thermal performance on standard PCB layouts.
Availability
1.5SMC180CAHM3/I is available at Aetrix Electronics and suitable for automotive electronics, industrial communication interfaces, and telecom infrastructure requiring stable component supply with long-term lifecycle support.
Supply support for 1.5SMC180CAHM3/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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive qualification.
The 1.5SMC Series was engineered specifically for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness, consistency, and regulatory compliance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC180CAHM3/I under a 10/1000 μs surge?
The 1.5SMC180CAHM3/I clamps to a maximum of 246 V when subjected to a 6.1 A peak pulse current with a 10/1000 μs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 8.0 mm × 8.0 mm copper pads) and defines the upper voltage limit imposed on protected circuitry during surge events. The 1.5SMC180CAHM3/I maintains this clamping performance across its full operating temperature range.
Is the 1.5SMC180CAHM3/I suitable for automotive applications?
Yes, the 1.5SMC180CAHM3/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. It is explicitly rated for under-hood and chassis-mounted use with guaranteed operation from −65 °C to +150 °C junction temperature. The 1.5SMC180CAHM3/I appears in Vishay's automotive ordering matrix and is used in production ECUs and ADAS sensor modules.
Does the 1.5SMC180CAHM3/I have polarity markings?
No, the 1.5SMC180CAHM3/I is a bidirectional TVS diode and carries no cathode band or polarity marking. Its symmetrical structure allows either terminal to serve as anode or cathode depending on transient polarity - simplifying layout and eliminating orientation errors during automated placement. This distinguishes it from unidirectional variants like 1.5SMC180A.
What is the maximum reverse leakage current for the 1.5SMC180CAHM3/I at rated standoff voltage?
The 1.5SMC180CAHM3/I exhibits a maximum reverse leakage current (ID) of 1.0 μA at its rated standoff voltage of 154 V (VWM), measured at TA = 25 °C. This ultra-low leakage ensures minimal impact on high-impedance sensor circuits and battery-powered systems, and remains stable across temperature due to the device's glass-passivated junction.
How does the SMC (DO-214AB) package of the 1.5SMC180CAHM3/I compare thermally to smaller packages like SMB?
The SMC (DO-214AB) package of the 1.5SMC180CAHM3/I provides significantly better thermal performance than SMB: its typical junction-to-ambient thermal resistance (RθJA) is 75 °C/W versus ~85 °C/W for SMBJ devices, due to larger copper pad area and enhanced heat spreading. This allows the 1.5SMC180CAHM3/I to sustain higher surge repetition rates and operate reliably at elevated ambient temperatures without derating.
1.5SMC180CAHM3/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:
- 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/I FAQ
1.How can I place an order for 1.5SMC180CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC180CAHM3/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/I reliable?
The price and inventory of 1.5SMC180CAHM3/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/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC180CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC180CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC180CAHM3/I?
1.5SMC180CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC180CAHM3/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/I?
For technical support, including 1.5SMC180CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC180CAHM3/I requirements.
6.How does Aetrix verify that 1.5SMC180CAHM3/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC180CAHM3/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/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC180CAHM3/I?
All 1.5SMC180CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC180CAHM3/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/I part is unused and in its original packaging.
Return procedure for 1.5SMC180CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC180CAHM3/I Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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