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Vishay General Semiconductor - Diodes Division 1.5SMC11CAHE3/9AT
- Part No.:
- 1.5SMC11CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC11CAHE3/9AT.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:4,847
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Product details
Overview
1.5SMC11CAHE3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 11 V breakdown voltage (VBR min/max: 10.5–11.6 V), 9.4 V stand-off voltage (VWM), clamps to ≤15.6 V at 96.2 A peak pulse current, and delivers 1500 W peak pulse power with a 10/1000 µs waveform - used in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC11CAHE3/9AT datasheet, 1.5SMC11CAHE3/9AT pinout, 1.5SMC11CAHE3/9AT application, or 1.5SMC11CAHE3/9AT equivalent, this AEC-Q101-qualified, RoHS-compliant SMC (DO-214AB) package device offers verified bidirectional clamping, low incremental surge resistance, and MSL Level 1 reflow compatibility up to 260 °C - critical for high-reliability automotive and industrial designs.
Technical Context
The 1.5SMC11CAHE3/9AT operates as a bidirectional avalanche diode, symmetrically clamping voltage transients in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while its low dynamic impedance enables effective suppression of ESD, lightning-induced surges, and inductive switching spikes.
Rated for -65 °C to +150 °C operating junction temperature, it supports repetitive 0.01% duty cycle pulses and derates linearly above 25 °C ambient per Fig. 2. Thermal resistance is 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-leads), enabling reliable operation on standard 8.0 mm × 8.0 mm copper pads per JEDEC mounting guidelines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 10.5 V / 11.6 V - defines guaranteed avalanche conduction onset across production lot; ensures consistent clamping threshold |
| VWM | 9.4 V - maximum continuous reverse voltage before leakage exceeds 5 µA; sets safe operating margin below breakdown |
| VC @ IPPM | ≤15.6 V at 96.2 A - clamped voltage during 10/1000 µs surge; determines protected circuit's maximum transient stress |
| PPPM | 1500 W - peak pulse power handling capability; validates suitability for IEC 61000-4-5 Level 4 surge immunity |
| IPPM | 96.2 A - peak pulse current under 10/1000 µs waveform; quantifies surge energy absorption capacity |
| TJ max | +150 °C - maximum junction temperature; enables use in under-hood automotive environments and sealed industrial enclosures |
| Package | SMC (DO-214AB) - surface-mount package with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place |
Pinout & Package
Package: SMC (DO-214AB), bidirectional configuration - no cathode/anode marking; symmetrical two-terminal construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no polarity dependency in circuit layout |
| Terminal 2 | Anode / Cathode (bidirectional) | Electrically identical to Terminal 1; enables placement flexibility and eliminates orientation constraints on PCB |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine control, ADAS, and body electronics |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 surge immunity up to 4 kV line-to-line in industrial and telecom applications |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes voltage overshoot during transients - protects downstream 12 V logic and analog front-ends without overdesigning margin |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free assembly without moisture sensitivity concerns or baking requirements |
| Glass passivated junction | Ensures long-term parameter stability and low leakage drift over temperature and lifetime - critical for safety-critical systems |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus nodes and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pair or supply rail to clamp transients before reaching MCU or signal conditioner. Use Value: Maintains signal integrity during 12 V system load dump events (up to 35 V, 400 ms) and meets AEC-Q101 qualification for automotive deployment. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Parallel-connected TVS on each channel input to divert >1 kV/10/1000 µs transients away from optocoupler or Schmitt trigger input stage. Use Value: Enables compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) without external series impedance or timing delays. |
| Telecom Power Rail Protection | Consumer Appliance Motor Control Board |
Use Scenario: Guarding 48 V PoE-powered Ethernet switch ports and base station DC feeds against lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Bidirectional TVS installed between VDD and GND on secondary-side DC/DC outputs to limit transient overvoltage on powered devices. Use Value: Clamps 1500 W surges within 1 ns, preserving isolation barrier integrity and preventing latch-up in PMICs and PHY ICs. |
Use Scenario: Suppressing inductive kickback from brushed DC motors and solenoids in washing machines, HVAC actuators, and power tools. IC Role / Device Role / Timing Role: TVS placed across motor terminals or H-bridge outputs to absorb flyback energy and prevent MOSFET avalanche failure. Use Value: Eliminates need for snubber RC networks; reduces BOM count and board space while maintaining UL 60730 Class B functional safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA-E3/52T | Lower PPPM (600 W), same VBR range, SMB (DO-214AA) package - 30% smaller footprint, lower surge rating | Suitable for space-constrained consumer electronics where 600 W surge immunity suffices (IEC 61000-4-5 Level 2) | Select when board area is critical and surge threat level is moderate; verify thermal performance on reduced pad size. |
| 1.5KE11CA | Through-hole TO-204AE (DO-41) package, same electrical specs but higher RθJA (100 °C/W); not AEC-Q101 qualified | Used in legacy industrial controls and prototyping where manual assembly or socketing is preferred | Choose only for non-automotive, non-volume SMT applications; avoid where AEC-Q101 or reflow compatibility is mandatory. |
Compared with SMBJ11CA-E3/52T and 1.5KE11CA, the 1.5SMC11CAHE3/9AT uniquely combines AEC-Q101 qualification, 1500 W surge capability, and SMC package scalability - making it the optimal choice for automotive and high-reliability industrial designs requiring validated long-term stability and full lead-free reflow support.
Availability
1.5SMC11CAHE3/9AT is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC I/O hardening, and telecom power rail safeguarding requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC11CAHE3/9AT 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 1.5SMC Series was engineered specifically for high-energy transient suppression in harsh environments - delivering AEC-Q101-qualified, surface-mount TVS solutions with repeatable clamping and industry-leading surge robustness.
FAQ
What is the breakdown voltage tolerance of the 1.5SMC11CAHE3/9AT?
The 1.5SMC11CAHE3/9AT has a specified breakdown voltage range of 10.5 V to 11.6 V at 1.0 mA test current (IT), corresponding to a ±5% tolerance around the nominal 11 V rating. This tight VBR window ensures predictable clamping behavior across temperature and production lots, and is confirmed in Table 1 of Vishay Document 88303.
Is the 1.5SMC11CAHE3/9AT unidirectional or bidirectional?
The 1.5SMC11CAHE3/9AT is a bidirectional TVS diode, indicated by the "CA" suffix per Vishay's naming convention. It provides symmetrical clamping in both polarities with no polarity marking on the SMC (DO-214AB) package - enabling flexible PCB layout and protection of AC-coupled or differential signal paths without orientation constraints.
Does the 1.5SMC11CAHE3/9AT meet automotive qualification standards?
Yes, the 1.5SMC11CAHE3/9AT is AEC-Q101 qualified, as confirmed by the "HE3" suffix and documentation in Vishay's 1.5SMC Series datasheet (Rev. 09-Mar-2026). It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD - making it approved for use in engine control units, ADAS sensors, and body electronics.
What is the maximum clamping voltage of the 1.5SMC11CAHE3/9AT at rated surge current?
The 1.5SMC11CAHE3/9AT clamps to a maximum of 15.6 V when subjected to its rated 96.2 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This VC value is measured per Figure 1 and Table 1 in Vishay Document 88303 and defines the upper voltage limit imposed on protected circuits during worst-case transients.
What packaging format is supplied for the 1.5SMC11CAHE3/9AT?
The 1.5SMC11CAHE3/9AT is supplied in 13-inch diameter plastic tape and reel packaging (ordering code suffix "/9AT"), containing 3500 units per reel. This format supports high-speed automated SMT assembly and is compatible with standard pick-and-place equipment per EIA-481 standards.
1.5SMC11CAHE3/9AT 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):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 96.2A
- 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)
1.5SMC11CAHE3/9AT FAQ
1.How can I place an order for 1.5SMC11CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC11CAHE3/9AT 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 1.5SMC11CAHE3/9AT reliable?
The price and inventory of 1.5SMC11CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC11CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC11CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC11CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC11CAHE3/9AT?
1.5SMC11CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC11CAHE3/9AT 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 1.5SMC11CAHE3/9AT?
For technical support, including 1.5SMC11CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC11CAHE3/9AT requirements.
6.How does Aetrix verify that 1.5SMC11CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC11CAHE3/9AT 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 1.5SMC11CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC11CAHE3/9AT?
All 1.5SMC11CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC11CAHE3/9AT, 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 1.5SMC11CAHE3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC11CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC11CAHE3/9AT Tags
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