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Vishay General Semiconductor - Diodes Division 1.5SMC36CA-E3/9AT
- Part No.:
- 1.5SMC36CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC36CA-E3/9AT.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:892
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Product details
Overview
1.5SMC36CA-E3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for robust ESD and surge protection in power and signal lines. It features a 36 V standoff voltage (VWM), 49.9 V clamping voltage (VC) at 30.1 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line cards.
For engineers reviewing the 1.5SMC36CA-E3/9AT datasheet, 1.5SMC36CA-E3/9AT pinout, 1.5SMC36CA-E3/9AT application, or 1.5SMC36CA-E3/9AT equivalent, key selection criteria include bidirectional clamping symmetry, low incremental surge resistance, MSL Level 1 moisture sensitivity, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on DO-214AB footprints.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ at 30.8 V), but triggers into low-impedance conduction when transient voltage exceeds its breakdown threshold (34.2–37.8 V at 1 mA). Its glass-passivated junction ensures stable avalanche characteristics and fast response (<1 ns).
The bidirectional architecture enables symmetric clamping in both polarities without polarity marking, making it suitable for AC-coupled or floating signal paths. Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15 °C/W, with operation rated from –65 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 30.8 V - Maximum continuous reverse voltage before leakage exceeds 1 μA; defines safe operating margin below clamping onset. |
| VBR (Breakdown) | 34.2–37.8 V at 1 mA - Verified avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping) | 49.9 V at 30.1 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; determines downstream IC survivability. |
| PPPM | 1500 W - Sustained energy absorption capacity per transient; supports repeated lightning-induced surges in telecom infrastructure. |
| IPPM | 30.1 A - Peak surge current handled without degradation; validated with 0.01% duty cycle repetitive testing. |
| TJ max | +150 °C - Maximum junction temperature rating; enables use in under-hood automotive environments with minimal derating. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 8.0 mm × 8.0 mm copper pad requirement; compatible with IPC-7351B footprint. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, MSL Level 1 (260 °C reflow peak), no polarity marking for bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | One terminal of symmetrical avalanche junction; connects to protected line or ground reference depending on layout. |
| Cathode | Transient return path (bidirectional) | Second terminal of symmetrical avalanche junction; electrically identical to Anode in CA-series devices; no band marking. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both polarities - eliminates need for orientation-aware placement in AC or differential signal paths. |
| 1500 W peak pulse power | Validated with 10/1000 μs waveform at 0.01% duty cycle - meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial ports. |
| Glass-passivated junction | Stable avalanche characteristics over >1000 surges - ensures long-term reliability in cyclic surge environments like motor drive feedback lines. |
| RoHS-compliant & MSL Level 1 | Matte tin plating compliant with J-STD-002/JESD 22-B102; 260 °C peak reflow tolerance - supports lead-free manufacturing without special handling. |
| Low incremental surge resistance | ~0.66 Ω (calculated from ΔV/ΔI = (49.9 V − 30.8 V)/30.1 A) - minimizes voltage overshoot during fast-rising transients (e.g., EFT bursts). |
Applications
| Automotive Sensor Protection | Industrial Ethernet PHY Interface |
|---|---|
|
Use Scenario: Protecting CAN FD or LIN bus transceivers from load-dump and jump-start induced transients in engine control units. IC Role / Device Role / Timing Role: Shunt TVS placed between signal line and chassis ground, clamping spikes before they reach transceiver ESD structures. Use Value: Maintains signal integrity during 12 V system surges up to ±300 V/10/1000 μs while preserving <100 pF capacitance to avoid signal distortion. |
Use Scenario: Safeguarding RJ45 magnetics and PHY ICs against lightning-induced surges on factory-floor Ethernet links. IC Role / Device Role / Timing Role: Bidirectional clamp across differential pairs (e.g., TX+/TX−), referenced to isolated ground plane. Use Value: Limits common-mode surge voltage to ≤49.9 V, preventing PHY latch-up or damage without requiring additional common-mode chokes. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Stage |
|
Use Scenario: Front-end protection for DSL or POTS line interface circuits exposed to induced lightning surges on outside plant wiring. IC Role / Device Role / Timing Role: Primary shunt protector mounted directly at connector entry point, upstream of filtering and conditioning stages. Use Value: Absorbs up to 1500 W of surge energy while holding clamped voltage below 50 V - within safe operating area of downstream op-amps and ADCs. |
Use Scenario: Secondary-side transient suppression on 5 V/12 V DC outputs of wall adapters used in smart home hubs and IoT gateways. IC Role / Device Role / Timing Role: Final-stage clamp between regulated output and ground, guarding against reverse-connected battery or hot-swap events. Use Value: Fast sub-nanosecond response prevents voltage overshoot from damaging USB-PD controllers or PMICs during plug-in transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | Same VWM/VC specs but lower PPPM (600 W); SMB package (smaller footprint, higher RθJA = 90 °C/W) | Preferred where board space is constrained and surge threat level is limited to IEC 61000-4-5 Level 2 | Select SMBJ36CA only if peak surge current remains ≤12 A and thermal budget allows higher junction rise. |
| 1.5KE36CA | Through-hole DO-15 package; identical electrical specs but incompatible with SMT assembly; higher RθJA (50 °C/W on FR4) | Suitable for legacy through-hole designs or prototyping where rework flexibility is prioritized over density | Choose 1.5KE36CA only for hand-soldered evaluation boards or repair scenarios - not for volume SMT production. |
Compared with SMBJ36CA and 1.5KE36CA, the 1.5SMC36CA-E3/9AT delivers optimal balance of high-power surge handling (1500 W), SMT manufacturability, and thermal performance (RθJA = 75 °C/W) in a standardized DO-214AB footprint - making it the preferred choice for automotive and industrial production designs requiring AEC-Q101-grade reliability and RoHS compliance.
Availability
1.5SMC36CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor modules, industrial Ethernet interfaces, telecom line cards, and consumer power adapter designs requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1.5SMC36CA-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 reliability, power efficiency, and automotive qualification.
The 1.5SMC Series was engineered specifically for high-energy transient suppression in harsh environments - targeting AEC-Q101 compliance, robust surge endurance, and seamless integration into automated SMT lines for automotive, industrial, and telecom end equipment.
FAQ
What is the clamping voltage of the 1.5SMC36CA-E3/9AT under a 10/1000 μs surge?
The 1.5SMC36CA-E3/9AT clamps to a maximum of 49.9 V when subjected to a 30.1 A peak pulse current with a 10/1000 μs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 8.0 mm × 8.0 mm copper pads) and defines the upper voltage limit imposed on protected circuitry during surge events. The 1.5SMC36CA-E3/9AT maintains this clamping performance consistently across its operational temperature range.
Is the 1.5SMC36CA-E3/9AT RoHS-compliant and halogen-free?
Yes, the 1.5SMC36CA-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 - that designation applies to "M3"-suffixed variants. The 1.5SMC36CA-E3/9AT uses matte tin-plated leads and complies with JESD 201 Class 2 whisker resistance requirements.
Does the 1.5SMC36CA-E3/9AT have polarity markings on the package?
No, the 1.5SMC36CA-E3/9AT is a bidirectional TVS diode and carries no polarity marking such as a cathode band. Its symmetrical construction means either terminal functions identically as anode or cathode depending on transient polarity - simplifying PCB layout and eliminating orientation errors during automated placement.
What is the maximum operating temperature for the 1.5SMC36CA-E3/9AT?
The 1.5SMC36CA-E3/9AT has a specified junction temperature range of –65 °C to +150 °C. Its thermal resistance values (RθJA = 75 °C/W, RθJL = 15 °C/W) allow reliable operation at full power in ambient temperatures up to +85 °C when mounted per recommended pad layout. Derating begins above 25 °C ambient per Figure 2 in the official Vishay datasheet for 1.5SMC36CA-E3/9AT.
Can the 1.5SMC36CA-E3/9AT be used in automotive applications?
Yes - while the base 1.5SMC36CA-E3/9AT is commercial-grade, the same die is qualified to AEC-Q101 when ordered with "HE3" or "HM3" suffixes (e.g., 1.5SMC36CAHE3_A/I). The 1.5SMC36CA-E3/9AT itself is widely deployed in non-safety-critical automotive subsystems including body control modules and infotainment interfaces where full AEC-Q101 certification is not mandated.
1.5SMC36CA-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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 30.1A
- 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)
1.5SMC36CA-E3/9AT FAQ
1.How can I place an order for 1.5SMC36CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC36CA-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 1.5SMC36CA-E3/9AT reliable?
The price and inventory of 1.5SMC36CA-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 1.5SMC36CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC36CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC36CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC36CA-E3/9AT?
1.5SMC36CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC36CA-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 1.5SMC36CA-E3/9AT?
For technical support, including 1.5SMC36CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC36CA-E3/9AT requirements.
6.How does Aetrix verify that 1.5SMC36CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC36CA-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 1.5SMC36CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC36CA-E3/9AT?
All 1.5SMC36CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC36CA-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 1.5SMC36CA-E3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC36CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC36CA-E3/9AT Tags
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