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Vishay General Semiconductor - Diodes Division 1.5SMC120CAHE3/9AT
- Part No.:
- 1.5SMC120CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC120CAHE3/9AT.pdf
- Description:
- TVS DIODE 102VWM 165VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:4,548
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Product details
Overview
1.5SMC120CAHE3/9AT 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 120 V standoff voltage (VWM), 137 V minimum breakdown voltage (VBR), 165 V maximum clamping voltage (VC) at 9.1 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 protection.
For engineers reviewing the 1.5SMC120CAHE3/9AT datasheet, 1.5SMC120CAHE3/9AT pinout, 1.5SMC120CAHE3/9AT application, or 1.5SMC120CAHE3/9AT equivalent, this device delivers AEC-Q101 qualification, low incremental surge resistance, fast sub-nanosecond response time, and MSL Level 1 moisture sensitivity - critical for reliable overvoltage protection in harsh environments without derating concerns up to +150 °C junction temperature.
Technical Context
The 1.5SMC120CAHE3/9AT operates as a bidirectional avalanche diode, symmetrically clamping transient voltages above ±137 V (VBR min) while maintaining ≤±165 V (VC) under 9.1 A IPPM. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 μA at 102 V).
Designed for SMC (DO-214AB) package mounting on 8.0 mm × 8.0 mm copper pads, it achieves thermal resistance of 75 °C/W (junction-to-ambient) and supports repetitive surge duty cycles up to 0.01 % - enabling robust protection against lightning-induced transients and inductive switching spikes in DC power rails and bidirectional data lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 102 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC operating margin. |
| VBR (Breakdown Voltage) | 137–152 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 165 V at 9.1 A IPPM - Peak voltage seen by protected circuit during worst-case 10/1000 μs surge; limits stress on downstream ICs. |
| PPPM (Peak Pulse Power) | 1500 W - Sustains single high-energy surges per IEC 61000-4-5; enables compliance with industrial surge immunity standards. |
| IPPM (Peak Pulse Current) | 9.1 A - Maximum non-repetitive surge current handled at rated clamping voltage; validated with 10/1000 μs waveform. |
| TJ max | +150 °C - Maximum junction temperature rating; supports operation in under-hood automotive and high-ambient industrial settings. |
| AEC-Q101 Qualified | Yes - Certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | Accepts surge current from either direction; connects to protected line or ground return path. |
| Cathode | Transient current entry (bidirectional) | Functionally identical to Anode in CA devices; symmetrical conduction enables dual-polarity clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints. |
| 1500 W peak pulse power | Meets IEC 61000-4-5 Level 4 (4 kV) surge requirements when properly mounted on recommended 8 mm² copper pads. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS sensor interfaces requiring zero-failure reliability. |
| MSL Level 1 (260 °C peak) | Permits standard lead-free reflow without pre-baking; eliminates moisture-related popcorning risk during assembly. |
| Low clamping ratio (VC/VBR ≈ 1.20) | Minimizes voltage overshoot during surge events - critical for protecting 12 V and 24 V system ICs with tight absolute maximum ratings. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load-dump and jump-start induced transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pair or supply rail to clamp surges before they reach transceiver inputs. Use Value: Prevents latch-up or permanent damage to transceivers rated for ≤±40 V common-mode input, leveraging 165 V clamping at 9.1 A. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Parallel-connected TVS on each channel's input line to shunt >1 kV transients per IEC 61000-4-4. Use Value: Maintains functional safety integrity by limiting voltage excursion to <165 V during 10/1000 μs surges, preserving input comparator thresholds. |
| Telecom Line Interface | DC Power Rail Protection |
Use Scenario: Shielding Ethernet PHY magnetics and PoE interface circuits from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Common-mode TVS across transformer center taps or differential pairs to suppress longitudinal surges. Use Value: Achieves <10 nA leakage at 102 V, preventing signal distortion while clamping >1 kV transients within 1 ns response window. |
Use Scenario: Guarding 12 V/24 V DC power inputs in embedded gateways and edge computing nodes against inductive switching noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed between input rail and chassis ground to divert surge energy away from DC-DC converters. Use Value: Handles 1500 W peak pulses without degradation, ensuring uninterrupted operation after repeated 10/1000 μs surges per MIL-STD-1275. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120CA | Lower PPPM (600 W), same VWM (102 V), larger SMB package (DO-214AA), higher RθJA (100 °C/W) | Reduced surge handling capacity; suitable only for lower-energy transients or space-constrained layouts where SMC footprint is unavailable | Select when board area is limited but 600 W surge rating suffices; verify thermal margin with reduced copper pad area |
| 1.5KE120CA | Through-hole TO-218 package, identical electrical specs (102 V VWM, 165 V VC), higher IFSM (200 A), no AEC-Q101 qualification | Not suitable for automated SMT assembly or automotive qualification; preferred for legacy through-hole designs or prototyping | Choose for manual assembly or cost-sensitive non-automotive applications where AEC-Q101 is not required |
Compared with SMBJ120CA and 1.5KE120CA, the 1.5SMC120CAHE3/9AT uniquely combines AEC-Q101 qualification, 1500 W surge capability, and SMC surface-mount compatibility - making it the optimal choice for production automotive and industrial systems requiring validated reliability and high-energy clamping in compact layouts.
Availability
1.5SMC120CAHE3/9AT is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC development, and telecom infrastructure projects requiring stable component supply, long-term lifecycle support, and traceable sourcing for mission-critical overvoltage protection.
Supply support for 1.5SMC120CAHE3/9AT 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 high-reliability, high-efficiency solutions.
The 1.5SMC Series targets ruggedized transient suppression in automotive, industrial, and telecom systems - engineered for AEC-Q101 compliance, high surge robustness, and seamless SMT integration into high-density PCBs.
FAQ
What is the clamping voltage of the 1.5SMC120CAHE3/9AT under a 10/1000 μs surge?
The 1.5SMC120CAHE3/9AT exhibits a maximum clamping voltage (VC) of 165 V when subjected to its rated peak pulse current of 9.1 A with a 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88303 and represents the upper voltage limit imposed on protected circuitry during standardized surge events - critical for ensuring downstream ICs remain within their absolute maximum ratings.
Is the 1.5SMC120CAHE3/9AT suitable for automotive applications?
Yes, the 1.5SMC120CAHE3/9AT is AEC-Q101 qualified, as indicated by the "HE3" suffix, confirming compliance with stress tests including temperature cycling, high-temperature reverse bias, and ESD. It is explicitly intended for automotive use cases such as sensor interface protection, infotainment power rails, and body control module I/O - supporting junction temperatures up to +150 °C and meeting MSL Level 1 for lead-free reflow.
What does the "CA" suffix mean in 1.5SMC120CAHE3/9AT?
The "CA" suffix in 1.5SMC120CAHE3/9AT denotes a bidirectional Transient Voltage Suppressor configuration. Unlike unidirectional variants (e.g., "A"), the CA version provides symmetrical clamping in both polarities - essential for protecting AC-coupled signals, floating buses like CAN or RS-485, and any circuit where voltage transients may swing positive or negative relative to ground.
What is the standoff voltage (VWM) of the 1.5SMC120CAHE3/9AT?
The standoff voltage (VWM) of the 1.5SMC120CAHE3/9AT is 102 V - the maximum DC or continuous peak voltage the device can withstand without entering avalanche conduction. This parameter ensures reliable blocking during normal operation while allowing rapid transition to clamping mode when transients exceed the 137 V minimum breakdown threshold.
Does the 1.5SMC120CAHE3/9AT require a heatsink for standard operation?
No, the 1.5SMC120CAHE3/9AT does not require an external heatsink for transient suppression duty cycles (e.g., 0.01 %). Its thermal resistance is specified at 75 °C/W junction-to-ambient when mounted on the recommended 8.0 mm × 8.0 mm copper pads. Continuous power dissipation is limited to 6.5 W, but surge events are short-duration and self-limiting - making heatsinking unnecessary in typical TVS applications.
1.5SMC120CAHE3/9AT 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):
- 102V
- Voltage - Breakdown (Min):
- 114V
- Voltage - Clamping (Max) @ Ipp:
- 165V
- Current - Peak Pulse (10/1000µs):
- 9.1A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC120CAHE3/9AT FAQ
1.How can I place an order for 1.5SMC120CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC120CAHE3/9AT 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 1.5SMC120CAHE3/9AT reliable?
The price and inventory of 1.5SMC120CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC120CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC120CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC120CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC120CAHE3/9AT?
1.5SMC120CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC120CAHE3/9AT 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 1.5SMC120CAHE3/9AT?
For technical support, including 1.5SMC120CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC120CAHE3/9AT requirements.
6.How does Aetrix verify that 1.5SMC120CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC120CAHE3/9AT 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 1.5SMC120CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC120CAHE3/9AT?
All 1.5SMC120CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC120CAHE3/9AT, 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 1.5SMC120CAHE3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC120CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC120CAHE3/9AT Tags
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