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Vishay General Semiconductor - Diodes Division 1.5SMC120CA-E3/9AT
- Part No.:
- 1.5SMC120CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC120CA-E3/9AT.pdf
- Description:
- TVS DIODE 102VWM 165VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:1,369
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Product details
Overview
1.5SMC120CA-E3/9AT from Vishay General Semiconductor is a bidirectional 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), 137 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 sensor interfaces, industrial I/O modules, and telecom line cards.
For engineers reviewing the 1.5SMC120CA-E3/9AT datasheet, 1.5SMC120CA-E3/9AT pinout, 1.5SMC120CA-E3/9AT application, or 1.5SMC120CA-E3/9AT equivalent, key selection criteria include bidirectional clamping symmetry, low incremental surge resistance (enabling precise transient suppression), RoHS-compliant matte tin terminations, and SMC (DO-214AB) package compatibility with automated placement and J-STD-002 solderability requirements.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ leakage at 102 V), but triggers into low-impedance conduction when transient voltage exceeds its breakdown threshold (114–126 V at 1 mA). Its bidirectional architecture ensures symmetrical clamping in both polarities without polarity marking.
The 1.5SMC120CA-E3/9AT uses a glass-passivated silicon junction to achieve fast response time (<1.0 ps), low thermal resistance (RθJL = 15 °C/W), and stable operation across -65 °C to +150 °C junction temperature range - meeting MSL Level 1 and supporting reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 102 V - maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown) | 114–126 V at 1 mA - guaranteed conduction onset range; ensures predictable turn-on during transients |
| VC (Clamping) | 165 V at IPPM = 9.1 A - peak voltage seen by protected circuit during 10/1000 μs surge; determines downstream component stress |
| PPPM | 1500 W - peak transient energy absorption capacity; enables protection against lightning-induced surges per IEC 61000-4-5 |
| Package | SMC (DO-214AB) - standardized surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal management per JEDEC |
| RoHS Status | E3 suffix - RoHS-compliant, commercial-grade, matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 |
| TJ max. | +150 °C - maximum junction temperature rating; supports operation in under-hood automotive and industrial ambient environments |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with UL 94 V-0 flammability rating; dimensions 7.75 mm × 6.22 mm × 2.62 mm (L × W × H); unmarked bidirectional terminals - no anode/cathode identification required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as input/output path; symmetrical conduction eliminates polarity dependency in PCB layout |
| Terminal 2 | Anode / Cathode (bidirectional) | Paired terminal forms differential or common-mode clamp; requires equal trace length for balanced ESD immunity |
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 | Withstands 10/1000 μs surges up to 9.1 A - meets IEC 61000-4-5 Level 4 (4 kV) in properly designed layouts |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure |
| MSL Level 1 rating | Supports standard reflow profiles without baking; compatible with high-volume SMT assembly at 260 °C peak |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD >15 kV contact discharge) |
Applications
| Automotive Sensor Interface | Industrial PLC I/O Module |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load dump and inductive switching transients in engine control units. IC Role / Device Role / Timing Role: Shunt TVS placed across differential bus lines to clamp voltage excursions before they reach transceiver inputs. Use Value: Prevents latch-up or permanent damage to 5 V tolerant transceivers during 12 V system load dump events (ISO 7637-2 Pulse 5a). |
Use Scenario: Safeguarding 24 V DC digital input channels against field-wiring induced surges in factory automation controllers. IC Role / Device Role / Timing Role: Parallel-connected TVS on each input channel to limit transient voltage to <165 V during 1 kV/500 Ω surge testing. Use Value: Maintains functional safety integrity by ensuring input logic remains within valid high/low thresholds during EMC immunity tests. |
| Telecom Line Card Protection | Consumer Power Adapter Input Stage |
Use Scenario: Shielding Ethernet PHY interface components from lightning-induced surges entering via RJ45 ports in outdoor base stations. IC Role / Device Role / Timing Role: Bidirectional TVS integrated into common-mode choke output stage to suppress differential and common-mode transients. Use Value: Achieves IEC 61000-4-5 4 kV surge immunity without degrading 100BASE-TX signal integrity (capacitance <100 pF). |
Use Scenario: Suppressing line-to-line and line-to-ground transients on AC/DC adapter primary-side rectifier outputs. IC Role / Device Role / Timing Role: Clamping device placed across bulk capacitor to prevent overvoltage failure during AC mains switching events. Use Value: Extends capacitor lifetime by limiting voltage spikes to ≤165 V, avoiding dielectric stress beyond rated 200 V DC. |
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), smaller SMB package (DO-214AA), higher VC (193 V at 7.8 A) | Less robust for high-energy surges; suitable only for secondary-side or low-power signal protection | Select when board space is constrained and surge threat level is limited to IEC 61000-4-2 Level 3 (8 kV air) |
| 1.5KE120CA | Through-hole TO-218 package, same VWM/VC specs, higher thermal mass but incompatible with SMT lines | Requires manual or wave-solder assembly; not viable for automated production or compact designs | Choose only for legacy repair, prototyping, or where thermal derating above 75 °C ambient is critical |
Compared with SMBJ120CA and 1.5KE120CA, the 1.5SMC120CA-E3/9AT delivers optimal balance of 1500 W surge handling, SMC package manufacturability, and bidirectional symmetry - making it the preferred choice for new automotive and industrial SMT designs requiring AEC-Q101-optional qualification path.
Availability
1.5SMC120CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O conditioning, and telecom line-card surge suppression requiring stable component supply and full traceability.
Supply support for 1.5SMC120CA-E3/9AT 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 reliability and application-specific performance.
The 1.5SMC Series was engineered for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where compact size, repeatable clamping, and AEC-Q101 readiness are essential.
FAQ
What is the clamping voltage of the 1.5SMC120CA-E3/9AT under a 10/1000 μs surge?
The 1.5SMC120CA-E3/9AT has a maximum clamping voltage (VC) of 165 V at 9.1 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per Figure 1 in Vishay's 88303 datasheet and defines the upper voltage limit imposed on protected circuits during standardized surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the 1.5SMC120CA-E3/9AT suitable for automotive applications?
Yes - while the 1.5SMC120CA-E3/9AT carries the commercial-grade E3 suffix, it shares identical electrical and mechanical specifications with AEC-Q101-qualified variants (e.g., 1.5SMC120CAHE3_A). Its -65 °C to +150 °C operating range, MSL Level 1 rating, and glass-passivated junction make the 1.5SMC120CA-E3/9AT suitable for under-hood and body-control module deployments when validated per customer qualification protocols.
How does the bidirectional design of the 1.5SMC120CA-E3/9AT affect PCB layout?
The 1.5SMC120CA-E3/9AT has no polarity marking and conducts identically in both directions, eliminating cathode/anode orientation constraints. For optimal performance, place the 1.5SMC120CA-E3/9AT with symmetric trace lengths to both protected nodes - especially critical in differential pairs like RS-485 or CAN - to maintain balanced clamping and avoid skew-induced voltage differentials during fast transients.
What is the thermal resistance of the 1.5SMC120CA-E3/9AT in standard mounting conditions?
Per the Vishay 88303 datasheet, the 1.5SMC120CA-E3/9AT exhibits a typical junction-to-leads thermal resistance (RθJL) of 15 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This low RθJL enables effective heat dissipation during repetitive surge events and supports reliable operation at elevated ambient temperatures without forced cooling.
Does the 1.5SMC120CA-E3/9AT meet RoHS and lead-free soldering requirements?
Yes - the "E3" suffix confirms the 1.5SMC120CA-E3/9AT is RoHS-compliant and features matte tin-plated leads qualified to J-STD-002 and JESD 22-B102. It supports lead-free reflow profiles with a maximum peak temperature of 260 °C (per J-STD-020 MSL Level 1), making the 1.5SMC120CA-E3/9AT fully compatible with modern high-volume SMT assembly lines.
1.5SMC120CA-E3/9AT 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:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC120CA-E3/9AT FAQ
1.How can I place an order for 1.5SMC120CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC120CA-E3/9AT 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 1.5SMC120CA-E3/9AT reliable?
The price and inventory of 1.5SMC120CA-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC120CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC120CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC120CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC120CA-E3/9AT?
1.5SMC120CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC120CA-E3/9AT 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 1.5SMC120CA-E3/9AT?
For technical support, including 1.5SMC120CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC120CA-E3/9AT requirements.
6.How does Aetrix verify that 1.5SMC120CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC120CA-E3/9AT 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 1.5SMC120CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC120CA-E3/9AT?
All 1.5SMC120CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC120CA-E3/9AT, 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 1.5SMC120CA-E3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC120CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC120CA-E3/9AT Tags
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Diodes Incorporated
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