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Vishay General Semiconductor - Diodes Division 1.5SMC120AHE3/57T
- Part No.:
- 1.5SMC120AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC120AHE3/57T.pdf
- Description:
- TVS DIODE 102VWM 165VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,471
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Product details
Overview
1.5SMC120AHE3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 120 V standoff voltage (VWM), 165 V 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 ECUs, industrial motor drives, and telecom interface circuits.
For engineers reviewing the 1.5SMC120AHE3/57T datasheet, 1.5SMC120AHE3/57T pinout, 1.5SMC120AHE3/57T application, or 1.5SMC120AHE3/57T equivalent, key selection criteria include its AEC-Q101 qualification, DO-214AB (SMC) package thermal performance, unidirectional polarity marking, and compliance with UL 497B for surge protector classification.
Technical Context
This TVS diode operates as a clamping device that enters avalanche breakdown when reverse voltage exceeds its 114–126 V breakdown range (VBR at 1 mA), limiting transient energy to safe levels across sensitive downstream components. Its low incremental surge resistance and fast response time (<1 ns) ensure effective suppression of ESD, lightning-induced surges, and inductive switching spikes.
The device is rated for 150 °C maximum junction temperature, derated linearly above 25 °C ambient per Fig. 2, and achieves 75 °C/W junction-to-ambient thermal resistance on standard 8.0 mm × 8.0 mm copper pads. Its matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 whisker testing Class 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 102 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working margin. |
| VBR (Breakdown) | 114–126 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping) | 165 V at IPPM = 9.1 A - Peak voltage seen by protected circuit under 10/1000 μs surge; determines stress on downstream ICs. |
| PPPM | 1500 W - Peak pulse power handling with 10/1000 μs waveform; enables protection against IEC 61000-4-5 Level 4 surges. |
| ID (Leakage) | 1.0 μA max at VWM - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss. |
| TJ max | +150 °C - Enables operation in under-hood automotive and high-temperature industrial environments. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated SMT assembly. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with UL 94 V-0 flammability rating; cathode indicated by band on body; matte tin-plated leads solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse surge return path | Connected to system ground or low-side reference; completes clamping loop during transient events. |
| Cathode | Reverse voltage sensing / Clamping output node | Connected to protected line (e.g., CAN_H, 12 V rail); avalanche conduction occurs from cathode to anode when VREV > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control, ADAS, and infotainment systems. |
| 1500 W peak pulse power | Withstands 10/1000 μs surges up to 9.1 A without degradation - meets IEC 61000-4-5 Ed. 3 requirements for industrial equipment. |
| Glass passivated junction | Ensures stable VBR over lifetime and improved moisture resistance vs. epoxy-passivated alternatives - critical for long-term field reliability. |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without preconditioning - eliminates manufacturing delays and moisture sensitivity handling. |
| UL 497B recognized (QVGQ2) | Approved for use in telecom and data line protectors per Underwriters Laboratories - simplifies safety certification for end equipment. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-supplied microcontrollers and CAN transceivers from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power rail and chassis ground to shunt surge energy away from IC inputs. Use Value: Limits transient voltage to ≤165 V during 12 V system load dump events, preventing latch-up or gate oxide damage in downstream logic. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC analog input modules. IC Role / Device Role / Timing Role: Line-end TVS on twisted-pair sensor cables to absorb induced lightning surges before reaching ADC front-end. Use Value: Clamps 1 kV/500 A surge (10/1000 μs) to <165 V within nanoseconds, preserving signal fidelity and avoiding ADC saturation or damage. |
| Telecom Data Line Surge Suppression | Consumer Power Adapter Input Protection |
Use Scenario: Shielding Ethernet PHY interfaces and PoE injectors from induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS on RJ45 line pairs (e.g., TX+/TX−) referenced to local ground plane. Use Value: Absorbs up to 1500 W of surge energy while maintaining <1.0 μA leakage at 102 V - no impact on 100BASE-TX signal integrity. |
Use Scenario: Secondary-side overvoltage clamp on 5–24 V DC outputs of wall adapters used in smart home hubs and IoT gateways. IC Role / Device Role / Timing Role: Final-stage protection device between regulator output and USB/UART connectors. Use Value: Prevents output short-circuit transients from propagating to connected devices, ensuring compliance with IEC 62368-1 fault energy limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120A-E3/52 | Lower PPPM (600 W), same VWM (102 V), SMB package (smaller footprint, higher RθJA = 85 °C/W) | Less robust for repeated high-energy surges; suited for space-constrained consumer electronics with lower surge exposure. | Select when board area is critical and surge threat level is ≤IEC 61000-4-5 Level 2. |
| 1.5KE120A | 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 soldering; unsuitable for automated production or high-density PCBs. | Choose only for legacy through-hole designs or prototyping where rework tolerance outweighs production efficiency. |
Compared with SMBJ120A-E3/52 and 1.5KE120A, the 1.5SMC120AHE3/57T delivers superior surge handling in an AEC-Q101-qualified SMT package - enabling automotive-grade reliability without sacrificing automated manufacturability or thermal performance.
Availability
1.5SMC120AHE3/57T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecom infrastructure equipment requiring stable component supply and long-term lifecycle support.
Supply support for 1.5SMC120AHE3/57T 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The 1.5SMC Series was engineered for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, UL recognition, and repeatable clamping behavior are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC120AHE3/57T under a 10/1000 μs surge?
The 1.5SMC120AHE3/57T 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 the Vishay datasheet 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 1.5SMC120AHE3/57T suitable for automotive applications?
Yes, the 1.5SMC120AHE3/57T is AEC-Q101 qualified and carries the HE3 suffix denoting RoHS-compliant and automotive-grade construction. It undergoes rigorous stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD verification - making it appropriate for engine control modules, body electronics, and ADAS subsystems where reliability under thermal and mechanical stress is essential.
What does the "HE3/57T" suffix indicate in 1.5SMC120AHE3/57T?
The "HE3" suffix identifies the 1.5SMC120AHE3/57T as RoHS-compliant and AEC-Q101 qualified, while "57T" specifies packaging in a 7-inch diameter plastic tape-and-reel format containing 850 units. This ordering code ensures traceability, compatibility with pick-and-place machines, and adherence to automotive supply chain requirements including PPAP documentation readiness.
How does the 1.5SMC120AHE3/57T compare to bidirectional TVS diodes like 1.5SMC120CA?
The 1.5SMC120AHE3/57T is unidirectional and features a cathode band for polarity-sensitive placement, whereas 1.5SMC120CA is bidirectional with symmetric clamping in both directions and no polarity marking. The 1.5SMC120AHE3/57T is preferred for DC power rail protection where reverse voltage blocking is required; the CA variant suits AC-coupled or differential signal lines like RS-485 or CAN bus.
What is the maximum junction temperature rating for the 1.5SMC120AHE3/57T?
The 1.5SMC120AHE3/57T has a maximum junction temperature (TJ max) of +150 °C, as specified in the Absolute Maximum Ratings table of Vishay document 88303. This allows reliable operation in under-hood automotive environments and high-temperature industrial enclosures, provided thermal design accounts for its 75 °C/W junction-to-ambient resistance on recommended 8.0 mm × 8.0 mm copper pads.
1.5SMC120AHE3/57T 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:
- 1
- Bidirectional Channels:
- -
- 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)
1.5SMC120AHE3/57T FAQ
1.How can I place an order for 1.5SMC120AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC120AHE3/57T 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 1.5SMC120AHE3/57T reliable?
The price and inventory of 1.5SMC120AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC120AHE3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC120AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC120AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC120AHE3/57T?
1.5SMC120AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC120AHE3/57T 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 1.5SMC120AHE3/57T?
For technical support, including 1.5SMC120AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC120AHE3/57T requirements.
6.How does Aetrix verify that 1.5SMC120AHE3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC120AHE3/57T 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 1.5SMC120AHE3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC120AHE3/57T?
All 1.5SMC120AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC120AHE3/57T, 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 1.5SMC120AHE3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC120AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC120AHE3/57T Tags
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