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Vishay General Semiconductor - Diodes Division 1.5SMC120AHE3_A/I
- Part No.:
- 1.5SMC120AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC120AHE3_A/I.pdf
- Description:
- TVS DIODE 102VWM 165VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:7,570
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Product details
Overview
1.5SMC120AHE3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on DC power rails and signal lines. It features 120 V standoff voltage (VWM), 165 V clamping voltage at 9.1 A peak pulse current, and 1500 W peak pulse power capability with 10/1000 μs waveform - deployed in automotive ECUs, industrial PLC I/O modules, and telecom power supplies.
For engineers reviewing the 1.5SMC120AHE3_A/I datasheet, 1.5SMC120AHE3_A/I pinout, 1.5SMC120AHE3_A/I application, or 1.5SMC120AHE3_A/I equivalent, key selection criteria include clamping performance under 10/1000 μs transients, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds 120 V (VWM), it avalanches to clamp transients up to 165 V at 9.1 A, limiting energy dissipation in downstream circuitry. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 μA at VWM).
Designed for repetitive surge events at 0.01% duty cycle, it delivers 1500 W peak pulse power while maintaining junction temperature ≤150 °C. The device meets MSL level 1 per J-STD-020 and supports lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 120 V - maximum continuous reverse operating voltage before clamping initiates; defines safe DC rail margin. |
| VC @ IPPM | 165 V at 9.1 A - clamping voltage during 10/1000 μs surge; determines worst-case overvoltage seen by protected IC. |
| PPPM | 1500 W - peak pulse power handling with standard 10/1000 μs waveform; enables robust lightning/inductive-switching immunity. |
| RθJA | 75 °C/W - thermal resistance junction-to-ambient on recommended pad layout; informs derating above 25 °C ambient. |
| TJ max | +150 °C - maximum junction temperature; sets upper limit for thermal design in sealed enclosures or high-power systems. |
| IFSM | 200 A - non-repetitive forward surge rating (8.3 ms half-sine); supports rare fault-current events without bond-wire failure. |
| AEC-Q101 Qualified | Yes - qualified for automotive applications per stress test requirements; validated for temperature cycling, HTRB, and ESD. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (unidirectional) | Connected to lower-potential side of protected line; conducts only during forward surge events (e.g., reverse polarity faults). |
| Cathode | Reverse-biased clamping terminal | Connected to higher-potential side (e.g., +12 V rail); avalanches into conduction when transient exceeds VWM, shunting current to ground. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12–48 V DC systems without external series impedance. |
| AEC-Q101 qualification | Validated for automotive under-hood and body-control module environments, including temperature cycling (-40 °C to +125 °C) and humidity testing. |
| Glass-passivated junction | Ensures stable VBR tolerance (±5%) and low leakage (<1 μA at VWM), critical for low-power sensor interfaces and battery-backed circuits. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow assembly without moisture-induced popcorning or delamination. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD >15 kV), improving clamping fidelity for sensitive microcontrollers. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protects 12 V supply input of BCM microcontroller from load-dump transients (ISO 7637-2 Pulse 5a, up to 60 V/100 ms) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VIN and GND, clamping within 1 ns to limit voltage to ≤165 V during 1500 W surge events. Use Value: Prevents MCU reset or latch-up during vehicle cranking and alternator field collapse, meeting OEM reliability targets for 15-year service life. |
Use Scenario: Shields 24 V digital input channel from inductive kickback when switching solenoids or contactors in factory automation. IC Role / Device Role / Timing Role: Standoff-rated TVS on input front-end, conducting only during >120 V transients to divert >9 A pulses away from optocoupler and conditioning circuitry. Use Value: Eliminates need for discrete RC snubbers, reducing BOM count and PCB area while maintaining EN 61000-4-4 Level 4 immunity (4 kV EFT). |
| Telecom Power Supply Output Rail | Consumer Appliance Motor Drive Board |
Use Scenario: Guards +48 V DC output of telecom rectifier against lightning-induced surges entering via long cable runs (IEC 61000-4-5 Combination Wave). IC Role / Device Role / Timing Role: Primary clamping device on secondary-side DC bus, coordinated with upstream MOVs to handle both high-energy (10/1000 μs) and fast (8/20 μs) components. Use Value: Achieves 1500 W clamping capacity with <165 V clamping, preserving downstream DC-DC converter MOSFETs rated for 60 V VDSS. |
Use Scenario: Safeguards microcontroller GPIO pins connected to brushed DC motor feedback lines exposed to commutation noise and brush arcing. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF) unidirectional TVS on signal path, placed adjacent to connector to intercept transients before reaching MCU ESD structures. Use Value: Reduces system-level ESD failure rate from >5% to <0.1% in production burn-in, verified per IEC 61000-4-2 ±8 kV contact discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120A-E3/52 | Lower PPPM (600 W), same VWM (120 V), SMB package (smaller footprint, higher RθJA = 110 °C/W) | Limited to lower-energy surges (IEC 61000-4-5 Level 2); unsuitable for automotive load dump or industrial 4 kV EFT. | Select when board space is constrained and surge threat level is ≤600 W; verify thermal margin at full load. |
| 1.5KE120A | Through-hole DO-201 package, identical electrical specs (VWM = 120 V, VC = 165 V, PPPM = 1500 W), no AEC-Q101 qualification | Not suitable for automated SMT lines or automotive production; requires wave soldering and manual inspection. | Choose only for legacy through-hole designs or prototyping where RoHS-compliant SMT is unavailable. |
Compared with SMBJ120A-E3/52 and 1.5KE120A, the 1.5SMC120AHE3_A/I uniquely combines AEC-Q101 qualification, 1500 W SMT-compatible surge handling, and MSL Level 1 reflow support - making it the only option qualified for volume automotive electronics and high-reliability industrial control.
Availability
1.5SMC120AHE3_A/I is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC I/O protection, and telecom power supply output rails requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC120AHE3_A/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, TVS devices, and power MOSFETs with emphasis on reliability and automotive-grade validation.
The 1.5SMC Series was developed specifically for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 compliance and 1500 W surge capability are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC120AHE3_A/I under a 10/1000 μs surge?
The 1.5SMC120AHE3_A/I clamps to a maximum of 165 V at its rated peak pulse current of 9.1 A with a 10/1000 μs waveform. This value is guaranteed per Vishay's datasheet (Document Number 88303, page 2) and represents the worst-case voltage imposed on protected circuitry during standardized surge testing - critical for ensuring downstream components remain within absolute maximum ratings.
Is the 1.5SMC120AHE3_A/I qualified to AEC-Q101 standards?
Yes, the 1.5SMC120AHE3_A/I is AEC-Q101 qualified, as confirmed by its "HE3" suffix and documentation in the Vishay 1.5SMC Series datasheet (Revision 09-Mar-2026). This qualification covers temperature cycling, high-temperature reverse bias (HTRB), and ESD testing - validating its suitability for automotive under-hood and body electronics where reliability over 15 years is required.
What package type does the 1.5SMC120AHE3_A/I use, and what are its mounting requirements?
The 1.5SMC120AHE3_A/I uses the SMC (DO-214AB) surface-mount package, with mechanical dimensions specified in inches/mm on page 5 of the Vishay datasheet. It requires mounting on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal for rated 1500 W performance, and supports lead-free reflow up to 260 °C peak per J-STD-020 MSL Level 1.
How does the 1.5SMC120AHE3_A/I differ from bidirectional variants like 1.5SMC120CA?
The 1.5SMC120AHE3_A/I is unidirectional, with cathode marked by a band and intended for DC line protection where polarity is fixed. In contrast, 1.5SMC120CA is bidirectional, lacks polarity marking, and protects AC or floating signals - but exhibits higher leakage at low voltages and cannot conduct forward surge current. Use 1.5SMC120AHE3_A/I for +12 V or +24 V rails; use the CA variant only for differential or AC-coupled paths.
What is the maximum junction temperature and thermal resistance of the 1.5SMC120AHE3_A/I?
The 1.5SMC120AHE3_A/I has a maximum junction temperature (TJ) of +150 °C and a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 8.0 mm × 8.0 mm copper pad layout. These values define its safe operating area: at 25 °C ambient, it can dissipate 6.5 W continuously, but must be derated linearly above that temperature per Figure 2 in the Vishay datasheet.
1.5SMC120AHE3_A/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:
- Active
- 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_A/I FAQ
1.How can I place an order for 1.5SMC120AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC120AHE3_A/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 1.5SMC120AHE3_A/I reliable?
The price and inventory of 1.5SMC120AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC120AHE3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC120AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC120AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC120AHE3_A/I?
1.5SMC120AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC120AHE3_A/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 1.5SMC120AHE3_A/I?
For technical support, including 1.5SMC120AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC120AHE3_A/I requirements.
6.How does Aetrix verify that 1.5SMC120AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC120AHE3_A/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 1.5SMC120AHE3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC120AHE3_A/I?
All 1.5SMC120AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC120AHE3_A/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 1.5SMC120AHE3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC120AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC120AHE3_A/I Tags
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