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Vishay General Semiconductor - Diodes Division 1.5SMC150CA-E3/9AT
- Part No.:
- 1.5SMC150CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC150CA-E3/9AT.pdf
- Description:
- TVS DIODE 128VWM 207VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,839
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Product details
Overview
1.5SMC150CA-E3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It delivers 1500 W peak pulse power (10/1000 µs), clamps at 207 V under 7.2 A peak pulse current, and features a 128 V standoff voltage (VWM) with ±5% tolerance - deployed in automotive sensor interfaces, industrial I/O protection, and telecom line conditioning.
For engineers reviewing the 1.5SMC150CA-E3/9AT datasheet, 1.5SMC150CA-E3/9AT pinout, 1.5SMC150CA-E3/9AT application, or 1.5SMC150CA-E3/9AT equivalent, key selection criteria include bidirectional clamping capability, SMC (DO-214AB) package thermal performance, AEC-Q101 qualification status, and compliance with UL 497B for telecom protectors.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling robust protection against voltage transients induced by inductive switching and lightning surges without polarity sensitivity. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1 µA at 128 V), while MSL Level 1 rating supports lead-free reflow up to 260 °C.
The device exhibits 0.108 %/°C temperature coefficient of VBR, ensuring predictable clamping voltage drift over -65 °C to +150 °C operating range. With 15 Ω typical junction-to-lead thermal resistance and 75 °C/W junction-to-ambient (on recommended 8 mm × 8 mm copper pads), it sustains repetitive 0.01% duty-cycle pulses without thermal runaway.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 128 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR min / max | 143 V / 158 V at 1 mA - Verified breakdown threshold range; ensures consistent turn-on across production lots. |
| VC @ IPPM | 207 V at 7.2 A - Clamped voltage during 10/1000 µs surge; determines maximum stress on downstream circuitry. |
| PPPM | 1500 W - Peak pulse power handling capacity; enables protection against IEC 61000-4-5 Level 4 surges. |
| IPPM | 7.2 A - Peak pulse current supported at rated waveform; directly correlates with surge energy absorption (E ≈ 1.5 kJ). |
| TJ max | +150 °C - Maximum junction temperature; allows operation in under-hood automotive and industrial environments. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 3.2 mm minimum creepage; supports automated placement and IPC Class 2 whisker resistance. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, dimensions 7.75 mm × 6.22 mm × 2.62 mm (L × W × H). No polarity marking on bidirectional variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative half-cycle) | Conducts during negative-going surges; symmetrical with cathode for bidirectional clamping. |
| Cathode | Transient current entry (positive half-cycle) | Conducts during positive-going surges; identical electrical behavior to anode in CA-series devices. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines or differential signals without external polarity management. |
| 1500 W peak pulse power | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive electronics. |
| MSL Level 1 moisture sensitivity | Eliminates bake-out requirement prior to reflow; compatible with standard SMT assembly processes. |
| AEC-Q101 qualified option | Available in HE3/HM3 variants; validates reliability for automotive powertrain and body electronics. |
| UL 497B recognition (QVGQ2) | Confirms suitability for telecom line protection applications requiring safety agency certification. |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus nodes and temperature/pressure sensors from load-dump and ISO 7637-2 transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector entry point to clamp fast-rising surges before reaching signal conditioning ICs. Use Value: Maintains 128 V standoff while limiting clamped voltage to 207 V, preserving ADC input range and preventing op-amp saturation. |
Use Scenario: Shielding 4–20 mA current loop inputs in programmable logic controllers from field wiring surges and ESD events. IC Role / Device Role / Timing Role: Primary transient suppressor across input terminals, coordinated with series current-limiting resistors and filtering caps. Use Value: Absorbs 1500 W surge energy without degradation, ensuring long-term reliability in factory-floor environments with frequent ground potential shifts. |
| Telecom Line Protection | Power Supply DC Bus Clamp |
Use Scenario: Safeguarding Ethernet PHYs and DSL line drivers against lightning-induced common-mode surges on twisted-pair cables. IC Role / Device Role / Timing Role: Paired with gas discharge tubes (GDTs) in hybrid protection circuits; handles fast-rising component of surge. Use Value: UL 497B recognition confirms compliance for telecom infrastructure; 207 V clamping prevents damage to 24 V or 48 V interface ICs. |
Use Scenario: Suppressing inductive kickback from relay coils and motor drivers on 12–48 V DC power rails in embedded systems. IC Role / Device Role / Timing Role: Parallel-connected TVS across rail-to-ground to shunt transient energy away from regulators and microcontrollers. Use Value: 1500 W rating accommodates repeated switching events; 150 °C max junction temperature supports operation near heat-generating components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA | Lower peak power (600 W), same VWM/VC, SMB package (smaller footprint, higher RθJA) | Limited to lower-energy surges (IEC 61000-4-5 Level 2); unsuitable for high-reliability automotive or telecom use. | Select when board space is constrained and surge threat level is moderate; verify thermal derating at elevated ambient temperatures. |
| 1.5KE150CA | Through-hole DO-201 package, identical electrical specs, higher mechanical robustness but no SMT compatibility | Preferred for prototyping or legacy through-hole designs; not suitable for automated high-volume SMT production. | Choose only if manual assembly or repair logistics favor axial leads; avoid for new SMT designs due to placement and reflow constraints. |
Compared with SMBJ150CA and 1.5KE150CA, the 1.5SMC150CA-E3/9AT uniquely balances 1500 W surge capability, SMC package manufacturability, and AEC-Q101-ready variants - making it optimal for volume automotive and industrial SMT deployments where reliability and process compatibility are co-prioritized.
Availability
1.5SMC150CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC analog inputs, and telecom line conditioning requiring stable component supply, RoHS-compliant sourcing, and traceable lot documentation.
Supply support for 1.5SMC150CA-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, MOSFETs, and protection devices with emphasis on high-reliability, automotive-grade, and industry-standard solutions.
The 1.5SMC Series targets high-power transient suppression in harsh environments, engineered specifically for AEC-Q101 compliance, UL safety recognition, and seamless integration into automated SMT lines.
FAQ
What is the clamping voltage of the 1.5SMC150CA-E3/9AT under maximum rated surge current?
The 1.5SMC150CA-E3/9AT clamps at 207 V when subjected to its maximum rated peak pulse current of 7.2 A using the standardized 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88303 and represents the upper limit of voltage imposed on protected circuitry during a full-rated transient event. The 1.5SMC150CA-E3/9AT maintains this clamping performance across its specified operating temperature range.
Is the 1.5SMC150CA-E3/9AT suitable for automotive applications?
Yes - the 1.5SMC150CA-E3/9AT is RoHS-compliant and manufactured to commercial-grade specifications; however, the base part number itself is not AEC-Q101 qualified. For automotive use, select the HE3 or HM3 variants (e.g., 1.5SMC150CAHE3_A), which carry full AEC-Q101 qualification. The 1.5SMC150CA-E3/9AT shares identical electrical and thermal characteristics but lacks the extended reliability testing required for automotive deployment.
What does the "CA" suffix indicate in 1.5SMC150CA-E3/9AT?
The "CA" suffix in 1.5SMC150CA-E3/9AT denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional "A" variants, the CA version has no polarity marking and functions identically in either orientation, making it ideal for AC-coupled lines, differential buses, and applications where voltage polarity reversal is possible. The 1.5SMC150CA-E3/9AT leverages this symmetry for simplified layout and reduced BOM complexity.
What is the standoff voltage (VWM) of the 1.5SMC150CA-E3/9AT, and how is it used in circuit design?
The standoff voltage (VWM) of the 1.5SMC150CA-E3/9AT is 128 V - the maximum continuous reverse voltage the device can withstand without entering avalanche conduction. In circuit design, VWM must exceed the system's normal operating voltage (including tolerances and ripple) to prevent leakage or premature clamping. For example, the 1.5SMC150CA-E3/9AT is appropriate for protecting 110 V AC-derived DC rails or 96 V battery systems where transient margins require ≥128 V blocking capability.
Does the 1.5SMC150CA-E3/9AT meet any safety certifications?
Yes - the 1.5SMC150CA-E3/9AT carries Underwriters Laboratories (UL) recognition under file E136766 for both unidirectional and bidirectional configurations, compliant with UL 497B for primary protectors in telecommunications equipment. This certification verifies its suitability for use in safety-critical telecom line interfaces and confirms adherence to flammability (UL 94 V-0), terminal solderability (J-STD-002), and whisker resistance (JESD 201 Class 2) standards. The 1.5SMC150CA-E3/9AT documentation explicitly references QVGQ2 classification.
1.5SMC150CA-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):
- 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)
1.5SMC150CA-E3/9AT FAQ
1.How can I place an order for 1.5SMC150CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC150CA-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 1.5SMC150CA-E3/9AT reliable?
The price and inventory of 1.5SMC150CA-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 1.5SMC150CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC150CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC150CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC150CA-E3/9AT?
1.5SMC150CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC150CA-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 1.5SMC150CA-E3/9AT?
For technical support, including 1.5SMC150CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC150CA-E3/9AT requirements.
6.How does Aetrix verify that 1.5SMC150CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC150CA-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 1.5SMC150CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC150CA-E3/9AT?
All 1.5SMC150CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC150CA-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 1.5SMC150CA-E3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC150CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC150CA-E3/9AT Tags
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