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Vishay General Semiconductor - Diodes Division SM15T150CAHE3/9AT
- Part No.:
- SM15T150CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T150CAHE3/9AT.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,664
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Product details
Overview
SM15T150CAHE3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 150 V standoff voltage (VWM), 171 V breakdown voltage (VBR min), and clamps to 265 V at 7.2 A peak pulse current (IPPM). It protects automotive-grade signal lines and power rails against lightning-induced and inductive switching transients.
For engineers reviewing the SM15T150CAHE3/9AT datasheet, SM15T150CAHE3/9AT pinout, SM15T150CAHE3/9AT application, or SM15T150CAHE3/9AT equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 150 V VWM compatibility with 24 V–48 V industrial bus systems, and SMC package suitability for automated surface-mount assembly.
Technical Context
This device operates as a voltage-clamped overvoltage protection element in parallel with sensitive circuit nodes. Its bidirectional architecture enables symmetrical clamping in both polarities without external polarity management, and its low dynamic impedance ensures stable clamping under fast-rising transients up to 10/1000 μs.
The SM15T150CAHE3/9AT features glass-passivated junction construction, meets MSL Level 1 per J-STD-020 (260 °C reflow peak), and exhibits a thermal resistance of 75 °C/W (junction-to-ambient) on standard 8.0 mm × 8.0 mm copper pads - enabling reliable operation up to TJ = 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 150 V - maximum continuous reverse voltage before conduction begins; compatible with 48 V nominal industrial and automotive supply rails. |
| VBR (Breakdown Voltage) | 171–188 V at 1 mA - precise threshold where avalanche conduction initiates; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 265 V at IPPM = 7.2 A (10/1000 μs) - limits downstream voltage stress to safe levels for 200 V-rated components. |
| PPPM (Peak Pulse Power) | 1500 W - sustains high-energy transients such as IEC 61000-4-5 surge (Level 4, 4 kV line-earth) without degradation. |
| TJ max | 150 °C - supports extended operation in under-hood automotive and industrial control cabinet environments. |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTGB, HTRB, and temperature cycling. |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; optimized for pick-and-place and thermal pad layout. |
Pinout & Package
SM15T150CAHE3/9AT uses the SMC (DO-214AB) package: molded plastic case with matte tin-plated leads, no polarity marking (bidirectional), and recommended mounting on 8.0 mm × 8.0 mm copper pads per terminal for thermal and surge performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminals | No functional distinction - either terminal connects to protected line; clamping occurs identically in both directions. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables robust protection against lightning surges (IEC 61000-4-5) and high-energy inductive kickback in motor drives. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive use including engine control units, ADAS sensor interfaces, and body electronics modules. |
| Low clamping ratio (VC/VBR ≈ 1.55) | Minimizes overvoltage margin between breakdown and clamp, reducing stress on downstream MOSFETs and ICs. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow assembly without moisture-related popcorning or delamination risk. |
| Glass-passivated junction | Provides stable leakage (<1 μA at VWM), long-term reliability under humidity and thermal cycling, and consistent VBR tolerance. |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs and microcontroller GPIOs in vehicle door modules exposed to load dump and ESD. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential bus lines or single-ended sensor outputs. Use Value: Prevents latch-up or gate oxide damage in transceivers by limiting transient excursions to ≤265 V while maintaining signal integrity at 1 Mbps. |
Use Scenario: Safeguarding RS-485/CAN FD physical layer circuits in factory automation PLCs subjected to motor drive noise and ground bounce. IC Role / Device Role / Timing Role: Parallel-connected TVS on bus lines (CAN_H/CAN_L) to shunt common-mode surges before reaching transceiver ESD diodes. Use Value: Absorbs 1500 W surges without failure, preserving data integrity during 250 V/12 Ω IEC 61000-4-5 tests on 24 V-powered nodes. |
| Telecom Power Input Stage | Renewable Energy Inverter DC Link |
Use Scenario: Secondary-side overvoltage suppression on 48 V telecom rectifier outputs feeding base station radios. IC Role / Device Role / Timing Role: Final-stage TVS after bulk filtering and before point-of-load regulators. Use Value: Clamps 1500 W transients within 1 ns response time, preventing regulator shutdown and maintaining uptime during lightning-induced grid coupling. |
Use Scenario: DC link protection in solar string inverters where PV array transients couple into 600–1000 V DC buses. IC Role / Device Role / Timing Role: Staged clamping device used alongside higher-voltage TVS arrays to manage energy distribution across protection layers. Use Value: Handles repetitive 10/1000 μs surges up to 7.2 A without parameter drift, supporting 20-year field life in outdoor installations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150CA | Same VWM (150 V), lower PPPM (400 W), SMA package (smaller thermal mass, higher RθJA). | Limited to lower-energy threats (e.g., ESD, low-level switching noise); not suitable for IEC 61000-4-5 Level 4. | Select SMAJ150CA only for space-constrained consumer applications where 1500 W surge immunity is unnecessary. |
| SMCJ150CA | Identical VWM, VBR, and PPPM; same SMC package but commercial-grade (E3 suffix), not AEC-Q101 qualified. | Approved for industrial/commercial use only; excluded from automotive production due to missing qualification testing. | Choose SMCJ150CA for cost-sensitive non-automotive designs requiring identical electrical performance without automotive certification. |
Compared with SMAJ150CA and SMCJ150CA, the SM15T150CAHE3/9AT uniquely delivers AEC-Q101 qualification alongside full 1500 W surge handling in the SMC footprint - making it the only option qualified for automotive powertrain and chassis systems requiring both high energy absorption and automotive reliability validation.
Availability
SM15T150CAHE3/9AT is available at Aetrix Electronics and suitable for automotive electronics, industrial motor control, and telecom infrastructure applications requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101-compliant sourcing.
Supply support for SM15T150CAHE3/9AT 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, rectifiers, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The SM15T Series was designed specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where 1500 W surge immunity and AEC-Q101 compliance are mandatory.
FAQ
What does the "CA" suffix indicate in SM15T150CAHE3/9AT?
The "CA" suffix denotes a bidirectional configuration: SM15T150CAHE3/9AT provides symmetrical clamping in both polarities, eliminating the need for polarity-aware placement on PCBs. This differs from unidirectional variants (e.g., SM15T150AHE3/9AT) that require cathode alignment. The CA version is ideal for AC-coupled lines, differential buses like CAN, and any application where voltage reversal may occur.
Is SM15T150CAHE3/9AT suitable for IEC 61000-4-5 surge testing?
Yes - SM15T150CAHE3/9AT is rated for 1500 W peak pulse power with a 10/1000 μs waveform, directly aligning with IEC 61000-4-5 Level 4 (4 kV line-to-earth, 2 Ω source impedance). When mounted per Vishay's recommended 8.0 mm × 8.0 mm copper pads, it reliably clamps transients to 265 V at 7.2 A, protecting downstream components without failure or parameter shift.
How does the HE3 suffix affect SM15T150CAHE3/9AT's qualification status?
The HE3 suffix confirms that SM15T150CAHE3/9AT is RoHS-compliant and AEC-Q101 qualified - meaning it has passed rigorous automotive stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling. This qualification is required for use in automotive powertrain, chassis, and safety-critical systems, distinguishing it from commercial-grade variants.
What is the maximum clamping voltage of SM15T150CAHE3/9AT under surge conditions?
The maximum clamping voltage (VC) of SM15T150CAHE3/9AT is 265 V when subjected to its rated peak pulse current of 7.2 A with a 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88380 and defines the upper voltage limit imposed on protected circuitry during worst-case surge events - critical for ensuring compatibility with 300 V-rated capacitors and MOSFETs.
Can SM15T150CAHE3/9AT be used in place of SM15T150AHE3/9AT?
No - SM15T150CAHE3/9AT is bidirectional, while SM15T150AHE3/9AT is unidirectional. Substituting them requires verifying circuit polarity: the unidirectional version must be oriented with its cathode band toward the positive rail, whereas the CA version has no polarity marking and clamps equally in both directions. Using the wrong type risks ineffective protection or forward conduction in DC-biased paths.
SM15T150CAHE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- SM15T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 7.2A
- 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)
SM15T150CAHE3/9AT FAQ
1.How can I place an order for SM15T150CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T150CAHE3/9AT 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 SM15T150CAHE3/9AT reliable?
The price and inventory of SM15T150CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T150CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SM15T150CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T150CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T150CAHE3/9AT?
SM15T150CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T150CAHE3/9AT 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 SM15T150CAHE3/9AT?
For technical support, including SM15T150CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T150CAHE3/9AT requirements.
6.How does Aetrix verify that SM15T150CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SM15T150CAHE3/9AT 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 SM15T150CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SM15T150CAHE3/9AT?
All SM15T150CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SM15T150CAHE3/9AT, 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 SM15T150CAHE3/9AT part is unused and in its original packaging.
Return procedure for SM15T150CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T150CAHE3/9AT Tags
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