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Vishay General Semiconductor - Diodes Division 1.5SMC150A-E3/9AT
- Part No.:
- 1.5SMC150A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC150A-E3/9AT.pdf
- Description:
- TVS DIODE 128VWM 207VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,081
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Product details
Overview
1.5SMC150A-E3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 150 V standoff voltage (VWM), 158 V maximum breakdown voltage (VBR), 207 V clamping voltage at 7.2 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 μs waveform - ideal for safeguarding MOSFETs and ICs against lightning-induced surges and inductive switching transients in industrial power supplies.
For engineers reviewing the 1.5SMC150A-E3/9AT datasheet, 1.5SMC150A-E3/9AT pinout, 1.5SMC150A-E3/9AT application, or 1.5SMC150A-E3/9AT equivalent, key selection considerations include its DO-214AB (SMC) package, unidirectional polarity with cathode band marking, 150 °C maximum junction temperature, RoHS-compliant matte tin-plated leads, and suitability for automated SMT assembly with MSL Level 1 rating.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ leakage at 128 V), but triggers into low-impedance conduction when transient voltage exceeds its 150 V standoff threshold. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1.0 ns).
The device delivers 1500 W peak pulse power handling per 10/1000 μs waveform at 25 °C, derating linearly above TA = 25 °C (per Fig. 2), with thermal resistance of 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 without heatsinking for typical surge events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 150 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working limit. |
| VBR (Breakdown) | 143–158 V at 1 mA - Confirmed breakdown range ensures predictable turn-on during transients. |
| VC (Clamping) | 207 V at 7.2 A IPPM - Peak voltage seen by protected circuit during full-rated 1500 W surge. |
| PPPM | 1500 W - Surge energy absorption capacity with 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 compliance. |
| ID (Leakage) | 1.0 μA max at 128 V - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss. |
| TJ max | +150 °C - Enables use in high-temperature environments such as automotive engine compartments or industrial motor drives. |
| Package | SMC (DO-214AB) - Standardized 2-pin surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1, compatible with reflow soldering up to 260 °C peak.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Protected circuit side / anode of internal PN junction | Connected to line being protected; conducts surge current to ground when voltage exceeds VBR. |
| Anode | Reference/ground side | Typically tied to system ground or low-impedance return path; completes clamping loop during transient events. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Supports high-energy surge suppression per IEC 61000-4-5 without degradation across 0.01% duty cycle. |
| Glass passivated junction | Ensures long-term stability of VBR and low parameter drift over temperature and lifetime. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD or lightning). |
| Automated placement compatible | Standard SMC outline and lead coplanarity meet IPC-7351B requirements for high-yield SMT assembly. |
| AEC-Q101 qualified option available | HE3/HM3 variants support automotive applications; this E3/9AT variant is commercial-grade with same core performance. |
Applications
| Industrial Motor Drives | Telecom Power Interfaces |
|---|---|
|
Use Scenario: Protection of gate drivers and DC bus sensing circuits against inductive kickback from IGBT/MOSFET switching. IC Role / Device Role / Timing Role: Shunt TVS placed across input rails or between gate and source to clamp voltage spikes before they reach sensitive control ICs. Use Value: Prevents latch-up or permanent damage to microcontrollers and isolated gate drivers during fault conditions. |
Use Scenario: Surge protection on -48 V DC telecom power feeds exposed to lightning-induced surges on outdoor plant wiring. IC Role / Device Role / Timing Role: Primary front-end clamping device in multi-stage protection architecture, absorbing bulk surge energy before downstream MOVs or GDTs. Use Value: Maintains 150 V standoff while clamping to 207 V - sufficient margin below telecom equipment's 250 V absolute maximum rating. |
| Automotive Body Control Modules | Industrial PLC I/O Channels |
|
Use Scenario: Protecting LIN bus transceivers and microcontroller GPIOs from load dump and ISO 7637-2 pulses in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS connected between LIN line and chassis ground, triggered only on positive transients. Use Value: Fast sub-nanosecond response captures fast edges of load dump pulses (tR < 100 ns), limiting voltage to safe levels for 3.3 V/5 V logic. |
Use Scenario: Input protection for analog current-loop (4–20 mA) sensor interfaces in factory automation cabinets. IC Role / Device Role / Timing Role: Series-connected TVS on signal line with series resistor, providing fail-safe clamping without affecting loop accuracy. Use Value: 1.0 μA max leakage at 128 V ensures minimal error contribution (<0.005% of full scale) in precision current measurement paths. |
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-E3/52T | Same VWM/VBR/VC specs but SMB (DO-214AA) package - 30% smaller footprint, lower PPPM (600 W). | Better suited for space-constrained PCBs where 600 W surge rating suffices; not drop-in due to different pad layout. | Select when board area is critical and surge threat level is moderate (e.g., internal signal lines). |
| 1.5KE150A | Through-hole TO-204AE (DO-15) package; identical electrical specs but higher RθJA (100 °C/W vs. 75 °C/W). | Requires wave soldering; less suitable for mixed-technology boards; higher thermal impedance limits repetitive surge duty. | Choose for legacy through-hole designs or where manual repairability outweighs SMT efficiency. |
Compared with SMBJ150A-E3/52T and 1.5KE150A, the 1.5SMC150A-E3/9AT offers optimal balance of high 1500 W surge capacity, SMT manufacturability, and thermal performance in the widely adopted SMC outline - making it preferred for new industrial and telecom designs requiring robust, automated production-ready protection.
Availability
1.5SMC150A-E3/9AT is available at Aetrix Electronics and suitable for industrial motor drives, telecom power interfaces, automotive body control modules, and PLC I/O channels requiring stable component supply and consistent surge performance across production batches.
Supply support for 1.5SMC150A-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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, ruggedness, and application-specific optimization.
The 1.5SMC Series was engineered for high-power, surface-mount transient suppression in harsh environments - targeting industrial, automotive, and telecom systems where failure due to voltage surges must be eliminated without compromising board space or assembly yield.
FAQ
What is the maximum clamping voltage of the 1.5SMC150A-E3/9AT under full-rated surge conditions?
The 1.5SMC150A-E3/9AT has a maximum clamping voltage (VC) of 207 V when subjected to its rated peak pulse current of 7.2 A using the standard 10/1000 μs waveform. This value is measured at TJ = 25 °C and confirms the device will limit transient voltage to ≤207 V across protected circuitry during worst-case surge events, preserving downstream components rated for 250 V absolute maximum.
Is the 1.5SMC150A-E3/9AT RoHS-compliant and halogen-free?
Yes, the 1.5SMC150A-E3/9AT carries the "E3" suffix, indicating it is RoHS-compliant per EU Directive 2011/65/EU and meets Vishay's commercial-grade material specifications. It is not halogen-free; for halogen-free compliance, the "M3" suffix variant (e.g., 1.5SMC150A-M3/9AT) must be selected.
Does the 1.5SMC150A-E3/9AT require a heatsink for standard surge operation?
No, the 1.5SMC150A-E3/9AT is designed to dissipate its 1500 W peak pulse power without external heatsinking when mounted on the recommended 8.0 mm × 8.0 mm copper pads per terminal. Its RθJA of 75 °C/W and RθJL of 15 °C/W ensure adequate thermal performance for single-event transients; however, repetitive surges above 0.01% duty cycle require thermal design review.
How does the 1.5SMC150A-E3/9AT differ from bidirectional versions like 1.5SMC150CA?
The 1.5SMC150A-E3/9AT is unidirectional, featuring a cathode band marking and conducting only in reverse bias - ideal for DC rail protection. In contrast, 1.5SMC150CA is bidirectional, symmetrical in both directions, and used for AC line or differential signal protection. Their VWM, VBR, and VC values differ accordingly: 1.5SMC150A specifies 150 V VWM, while 1.5SMC150CA specifies 128 V VWM (bidirectional mode).
What is the surge current rating and test condition for the 1.5SMC150A-E3/9AT?
The 1.5SMC150A-E3/9AT is rated for a peak pulse current (IPPM) of 7.2 A under the standardized 10/1000 μs double-exponential waveform (rise time 10 μs, decay to 50% in 1000 μs), per IEC 61000-4-5. This corresponds to its 1500 W peak pulse power rating and is validated with non-repetitive pulses at TA = 25 °C on specified copper pad areas.
1.5SMC150A-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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC150A-E3/9AT FAQ
1.How can I place an order for 1.5SMC150A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC150A-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 1.5SMC150A-E3/9AT reliable?
The price and inventory of 1.5SMC150A-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 1.5SMC150A-E3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC150A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC150A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC150A-E3/9AT?
1.5SMC150A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC150A-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 1.5SMC150A-E3/9AT?
For technical support, including 1.5SMC150A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC150A-E3/9AT requirements.
6.How does Aetrix verify that 1.5SMC150A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC150A-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 1.5SMC150A-E3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC150A-E3/9AT?
All 1.5SMC150A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC150A-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 1.5SMC150A-E3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC150A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC150A-E3/9AT Tags
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