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Vishay General Semiconductor - Diodes Division 1.5SMC150AHE3/9AT
- Part No.:
- 1.5SMC150AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC150AHE3/9AT.pdf
- Description:
- TVS DIODE 128VWM 207VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:8,520
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Product details
Overview
1.5SMC150AHE3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 150 V standoff voltage (VWM), 1500 W peak pulse power (10/1000 µs), clamping voltage of 207 V at 7.2 A peak pulse current, and operates across -65 °C to +150 °C. It is widely deployed in automotive ECUs to protect CAN transceivers and microcontrollers from load dump and ISO 7637-2 transients.
For engineers reviewing the 1.5SMC150AHE3/9AT datasheet, 1.5SMC150AHE3/9AT pinout, 1.5SMC150AHE3/9AT application, or 1.5SMC150AHE3/9AT equivalent, key selection criteria include its AEC-Q101 qualification, DO-214AB (SMC) package compatibility with automated SMT assembly, low incremental surge resistance, and verified clamping performance under repetitive 10/1000 µs surges at 0.01% duty cycle.
Technical Context
This TVS diode employs a glass-passivated silicon junction optimized for fast response (<1 ps) and stable breakdown behavior under high-energy transients. Its unidirectional polarity-marked by a cathode band-enables integration into DC-biased rails where reverse conduction must be blocked while allowing precise clamping during positive-going surges.
The device meets J-STD-020 MSL Level 1 (260 °C peak reflow), supports 200 A non-repetitive forward surge (8.3 ms half-sine), and delivers 6.5 W steady-state power dissipation on infinite heatsink at 50 °C ambient. Thermal resistance is specified at RθJA = 75 °C/W and RθJL = 15 °C/W, enabling accurate thermal modeling in compact PCB layouts with 8.0 mm × 8.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 128 V - Maximum continuous reverse operating voltage before clamping begins; sets safe DC bias margin for 12–24 V automotive systems. |
| VBR (Breakdown) | 143–158 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on within 5% tolerance under standardized test conditions. |
| VC (Clamping) | 207 V at IPPM = 7.2 A - Measured maximum voltage during 10/1000 µs surge; defines worst-case stress imposed on downstream ICs. |
| PPPM | 1500 W - Peak pulse power handling capability; validates suitability for ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 Level 4 surges. |
| TJ max. | +150 °C - Maximum junction temperature rating; supports operation in under-hood automotive environments without derating. |
| Package | DO-214AB (SMC) - Standardized surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with IPC-7351B SMC_775X622N land pattern. |
| AEC-Q101 | Qualified - Certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC-Q101 Rev G. |
Pinout & Package
Package: DO-214AB (SMC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, cathode indicated by a single band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to system ground or low-side return path; enables unidirectional clamping only on positive transients relative to this node. |
| Cathode | Current exit point during forward conduction; marked with band | Connected to protected line (e.g., CAN_H, 12 V rail); defines clamping reference and blocks reverse leakage below VWM. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable breakdown voltage and low leakage (<1 µA at VWM) over lifetime and temperature extremes. |
| 1500 W peak pulse power (10/1000 µs) | Validates immunity to high-energy transients such as automotive load dump without degradation after repeated events. |
| AEC-Q101 qualified (HE3 suffix) | Confirms compliance with automotive stress tests including HTGB, AC-H3TRB, and mechanical shock-no additional qualification needed for Tier 1 programs. |
| MSL Level 1 moisture sensitivity | Permits unlimited floor life and standard 260 °C reflow without baking, reducing manufacturing overhead and risk of popcorning. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD or switching noise), improving protection margin for sensitive ICs. |
Applications
| Automotive Power Rail Protection | CAN Bus Transceiver Protection |
|---|---|
|
Use Scenario: Installed on 12 V battery feed lines in engine control units to suppress load dump transients per ISO 7637-2 Pulse 5a. IC Role / Device Role: Unidirectional TVS clamp placed between battery input and DC-DC converter input stage. Use Value: Limits transient voltage to ≤207 V, preventing damage to 36 V-rated input stages and maintaining system uptime during cold-cranking recovery. |
Use Scenario: Mounted across CAN_H and CAN_L lines near connector interface to absorb ESD and coupled noise from harness. IC Role / Device Role: Bidirectional clamping not applicable; this unidirectional part used on CAN_H-to-ground to handle positive common-mode surges. Use Value: Clamps CAN_H to ≤207 V during 8 kV contact ESD (IEC 61000-4-2), preserving signal integrity and avoiding bus lockup. |
| Industrial Sensor Signal Conditioning | Telecom Power Interface |
|
Use Scenario: Placed on 24 V supply input of analog sensor modules exposed to relay coil flyback in factory automation cabinets. IC Role / Device Role: Primary overvoltage clamp on sensor VDD rail, upstream of LDO regulator. Use Value: Absorbs 1500 W flyback energy without failure, eliminating need for redundant Zener-based protection and reducing BOM count. |
Use Scenario: Integrated into PoE-powered equipment front-end to protect Ethernet PHY power inputs from lightning-induced surges on building wiring. IC Role / Device Role: Secondary-level TVS on 48 V PSE-derived supply, coordinated with primary gas discharge tube (GDT). Use Value: Provides <1 ns response and precise 207 V clamping to prevent latch-up in IEEE 802.3af/at compliant PHYs during induced surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A-E3/52 | Same VWM (128 V), lower PPPM (600 W), SMB (DO-214AA) package (smaller footprint, higher RθJA = 85 °C/W) | Limited to lower-energy transients (e.g., IEC 61000-4-4); unsuitable for ISO 7637-2 Pulse 5a due to power rating | Select when board space is constrained and surge threat level is limited to EFT or low-duty-cycle switching noise. |
| 1.5KE150A-T | Same electrical specs but through-hole DO-201AD package; no AEC-Q101 qualification; higher mounting inductance | Not suitable for automotive SMT production; requires wave soldering; less effective for fast transients due to lead inductance | Choose only for legacy industrial designs where reworkability or manual assembly is prioritized over surge performance and automotive compliance. |
Compared with SMBJ150A-E3/52 and 1.5KE150A-T, the 1.5SMC150AHE3/9AT uniquely combines AEC-Q101 qualification, 1500 W pulse rating, and SMC package thermal performance-making it the only option among the three validated for under-hood automotive deployment with zero layout compromise.
Availability
1.5SMC150AHE3/9AT is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power entry applications requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101 qualified parts.
Supply support for 1.5SMC150AHE3/9AT 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 developed specifically for high-power, surface-mount transient suppression in harsh environments-including automotive, industrial, and telecom infrastructure-where consistent clamping, AEC-Q101 compliance, and automated assembly readiness are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC150AHE3/9AT under a 10/1000 µs surge?
The 1.5SMC150AHE3/9AT has a maximum clamping voltage (VC) of 207 V at 7.2 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88303 and defines the upper voltage limit imposed on protected circuitry during surge events. The 1.5SMC150AHE3/9AT maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C) with minimal drift.
Is the 1.5SMC150AHE3/9AT AEC-Q101 qualified?
Yes, the 1.5SMC150AHE3/9AT is AEC-Q101 qualified, as confirmed by the "HE3" suffix in its ordering code and documented in Vishay's 1.5SMC series datasheet (Rev. 09-Mar-2026, Doc. #88303). This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and mechanical shock-validating its use in automotive powertrain and body electronics without additional component-level qualification.
What does the "9AT" suffix mean in 1.5SMC150AHE3/9AT?
The "9AT" suffix indicates packaging: 13-inch diameter plastic tape-and-reel format with 3500 units per reel. This differs from "57T" (7-inch reel, 850 units) and supports high-volume SMT assembly. The "HE3" portion confirms RoHS-compliant, AEC-Q101 qualified construction, while "150A" specifies the 150 V nominal breakdown variant. The 1.5SMC150AHE3/9AT is not a different electrical variant-it shares identical electrical characteristics with other 1.5SMC150AHE3 formats.
Can the 1.5SMC150AHE3/9AT be used in bidirectional applications?
No, the 1.5SMC150AHE3/9AT is a unidirectional TVS diode, as indicated by the "A" suffix (vs. "CA" for bidirectional). Its cathode band marks polarity, and it conducts only during positive surges relative to the cathode. For bidirectional protection-such as across differential lines like RS-485 or CAN-the 1.5SMC150CAHE3/9AT would be required. Using the 1.5SMC150AHE3/9AT in bidirectional configurations risks failure during negative transients.
What is the thermal resistance of the 1.5SMC150AHE3/9AT?
The 1.5SMC150AHE3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-leads resistance (RθJL) of 15 °C/W, measured on 8.0 mm × 8.0 mm copper pads per terminal. These values enable accurate thermal modeling in automotive and industrial PCBs. Derating curves in Figure 2 of the datasheet show that at 100 °C ambient, the device retains >60% of its 1500 W pulse rating-critical for under-hood applications where the 1.5SMC150AHE3/9AT is commonly deployed.
1.5SMC150AHE3/9AT 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:
- 1
- Bidirectional Channels:
- -
- 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)
1.5SMC150AHE3/9AT FAQ
1.How can I place an order for 1.5SMC150AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC150AHE3/9AT 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 1.5SMC150AHE3/9AT reliable?
The price and inventory of 1.5SMC150AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC150AHE3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC150AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC150AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC150AHE3/9AT?
1.5SMC150AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC150AHE3/9AT 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 1.5SMC150AHE3/9AT?
For technical support, including 1.5SMC150AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC150AHE3/9AT requirements.
6.How does Aetrix verify that 1.5SMC150AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC150AHE3/9AT 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 1.5SMC150AHE3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC150AHE3/9AT?
All 1.5SMC150AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC150AHE3/9AT, 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 1.5SMC150AHE3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC150AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC150AHE3/9AT Tags
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