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Vishay General Semiconductor - Diodes Division 1.5SMC120CAHE3/57T
- Part No.:
- 1.5SMC120CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC120CAHE3/57T.pdf
- Description:
- TVS DIODE 102VWM 165VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:7,294
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Product details
Overview
1.5SMC120CAHE3/57T 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 maximum clamping voltage (VC) at 9.1 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 μs waveform - suitable for automotive-grade ESD and lightning transient suppression in sensor interfaces and power rails.
For engineers reviewing the 1.5SMC120CAHE3/57T datasheet, 1.5SMC120CAHE3/57T pinout, 1.5SMC120CAHE3/57T application, or 1.5SMC120CAHE3/57T equivalent, this device delivers AEC-Q101 qualification, DO-214AB (SMC) package compatibility, low incremental surge resistance, and bidirectional clamping behavior critical for robust overvoltage protection in harsh environments.
Technical Context
The 1.5SMC120CAHE3/57T operates as a bidirectional avalanche diode, symmetrically clamping voltage transients above ±137 V in either polarity without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), enabling effective suppression of ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and lightning-induced surges (IEC 61000-4-5).
Thermally, it exhibits RθJA = 75 °C/W and RθJL = 15 °C/W, supporting operation up to TJ = +150 °C. With 1.0 μA max reverse leakage at 102 V and 0.107 %/°C temperature coefficient of VBR, it maintains predictable clamping across industrial and automotive temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 102 V - Maximum continuous reverse voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 114–126 V at 1 mA - Verified avalanche onset range; ensures consistent turn-on during transients. |
| VC (Clamping) | 137 V at IPPM = 9.1 A - Peak voltage seen by protected circuit during 10/1000 μs surge; determines stress on downstream components. |
| PPPM | 1500 W - Surge energy handling capacity under standardized 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 compliance. |
| ID (Leakage) | 1.0 μA max at VWM - Minimal DC loading on signal/power lines; preserves system efficiency and signal integrity. |
| TJ max | +150 °C - Enables use in under-hood automotive and industrial environments without thermal derating penalties. |
| AEC-Q101 | Qualified - Validated for automotive reliability including HTOL, TC, UHAST, 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 (negative polarity) | One terminal of symmetrical avalanche junction; conducts during negative-going surges. |
| Cathode | Transient current entry (positive polarity) | Other terminal of symmetrical junction; conducts during positive-going surges; no band marking for bidirectional devices. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines or differential signals without polarity constraints. |
| 1500 W peak pulse power | Supports high-energy transients per IEC 61000-4-5 (4 kV line-to-line, 2 kV line-to-ground) without failure. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS sensor modules requiring long-term reliability. |
| Low clamping ratio (VC/VBR ≈ 1.12) | Minimizes overvoltage overshoot during surge events, reducing stress on protected ICs and MOSFETs. |
| MSL Level 1 (260 °C peak) | Permits standard lead-free reflow assembly without moisture sensitivity concerns or baking requirements. |
Applications
| Automotive Sensor Protection | Industrial Power Rail Clamping |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector interface to shunt surge energy before reaching signal conditioning circuitry. Use Value: Maintains signal fidelity under 100 V/10 ms load dump events while surviving >1000 surges per AEC-Q101 stress test. |
Use Scenario: Safeguarding 24 V DC input rails in PLC I/O modules against inductive switching spikes and lightning-coupled surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp parallel to bulk capacitor, limiting rail excursion to ≤137 V during 1500 W transients. Use Value: Prevents latch-up or destruction of downstream DC-DC controllers and microcontrollers during field-deployed operation. |
| Telecom Line Interface | Consumer Appliance Motor Control |
|
Use Scenario: Shielding Ethernet PHYs and PoE injectors from induced surges on twisted-pair cabling in building infrastructure. IC Role / Device Role / Timing Role: Differential-mode TVS across data pairs, leveraging bidirectional symmetry to suppress common-mode and differential transients. Use Value: Achieves <1 ns response with <137 V clamping, preserving signal integrity up to 100 Mbps while meeting UL 497B listing. |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Mounted across motor terminals to clamp inductive kickback before reaching driver FETs or MCU GPIOs. Use Value: Eliminates need for snubber RC networks; reduces BOM count and PCB area while sustaining 200 A IFSM surge rating. |
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/VC, SMB package (smaller footprint, higher RθJA = 110 °C/W) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or automotive load dump. | Select when space-constrained layouts prioritize size over surge rating, and thermal management allows higher junction rise. |
| 1.5KE120CA | Through-hole TO-218 package, identical electrical specs but incompatible with SMT assembly and MSL-1 requirements. | Not viable for automated production or AEC-Q101-compliant automotive designs due to packaging and qualification gap. | Choose only for legacy through-hole systems where rework tolerance and manual assembly are acceptable. |
Compared with SMBJ120CA and 1.5KE120CA, the 1.5SMC120CAHE3/57T uniquely combines 1500 W surge capability, AEC-Q101 qualification, and SMC package compatibility - making it the only option among the three qualified for high-reliability automotive SMT production with full IEC 61000-4-5 compliance.
Availability
1.5SMC120CAHE3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial 24 V power supplies, telecom line protection, and consumer appliance motor control requiring stable component supply and long-term lifecycle support.
Supply support for 1.5SMC120CAHE3/57T 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, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The 1.5SMC Series was engineered for high-power, surface-mount transient suppression in demanding environments - targeting automotive, industrial, and telecom applications where robustness, AEC-Q101 compliance, and standardized SMC packaging are essential.
FAQ
What is the clamping voltage of the 1.5SMC120CAHE3/57T under a 10/1000 µs surge?
The 1.5SMC120CAHE3/57T clamps to a maximum of 137 V when subjected to its rated peak pulse current of 9.1 A using the standardized 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88303 and defines the upper voltage limit imposed on protected circuits during surge events. The 1.5SMC120CAHE3/57T maintains this clamping performance across its full operating temperature range.
Is the 1.5SMC120CAHE3/57T suitable for automotive applications?
Yes - the 1.5SMC120CAHE3/57T carries AEC-Q101 qualification (indicated by the "HE3" suffix) and is explicitly rated for automotive use per Vishay's ordering nomenclature and qualification documentation. It meets stress test requirements including high-temperature operating life, temperature cycling, and ESD immunity, making the 1.5SMC120CAHE3/57T appropriate for engine control units, body electronics, and ADAS sensor modules.
Does the 1.5SMC120CAHE3/57T have polarity markings?
No - the 1.5SMC120CAHE3/57T is a bidirectional TVS diode and carries no cathode band or polarity marking on its SMC (DO-214AB) package. Its symmetrical construction allows installation in either orientation, simplifying layout and eliminating risk of reverse placement. This distinguishes the 1.5SMC120CAHE3/57T from unidirectional variants like 1.5SMC120AHE3/57T, which feature a visible cathode band.
What is the maximum operating temperature for the 1.5SMC120CAHE3/57T?
The 1.5SMC120CAHE3/57T has a maximum junction temperature (TJ max) of +150 °C, as specified in the Absolute Maximum Ratings table of Vishay document 88303. This rating enables reliable operation in under-hood automotive environments and industrial enclosures without thermal derating below ambient temperatures up to +125 °C, provided PCB copper pad layout meets the 8.0 mm × 8.0 mm minimum recommendation. The 1.5SMC120CAHE3/57T sustains full electrical performance across this range.
How does the 1.5SMC120CAHE3/57T differ from the unidirectional 1.5SMC120AHE3/57T?
The 1.5SMC120CAHE3/57T is bidirectional with symmetrical clamping in both polarities and no polarity marking, whereas the 1.5SMC120AHE3/57T is unidirectional, features a cathode band, and conducts only during positive surges. Electrically, the 1.5SMC120CAHE3/57T has identical VWM (102 V), VBR (114–126 V), and VC (137 V) ratings but differs in leakage behavior and application scope - the 1.5SMC120CAHE3/57T is preferred for AC lines, differential signals, and polarity-agnostic protection.
1.5SMC120CAHE3/57T 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)
1.5SMC120CAHE3/57T FAQ
1.How can I place an order for 1.5SMC120CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC120CAHE3/57T 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 1.5SMC120CAHE3/57T reliable?
The price and inventory of 1.5SMC120CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC120CAHE3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC120CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC120CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC120CAHE3/57T?
1.5SMC120CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC120CAHE3/57T 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 1.5SMC120CAHE3/57T?
For technical support, including 1.5SMC120CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC120CAHE3/57T requirements.
6.How does Aetrix verify that 1.5SMC120CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC120CAHE3/57T 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 1.5SMC120CAHE3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC120CAHE3/57T?
All 1.5SMC120CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC120CAHE3/57T, 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 1.5SMC120CAHE3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC120CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC120CAHE3/57T Tags
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