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Vishay General Semiconductor - Diodes Division 1.5SMC36CA-E3/57T
- Part No.:
- 1.5SMC36CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC36CA-E3/57T.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:1,570
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Product details
Overview
1.5SMC36CA-E3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage 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 (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed to safeguard MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching surges in automotive and industrial systems.
For engineers reviewing the 1.5SMC36CA-E3/57T datasheet, 1.5SMC36CA-E3/57T pinout, 1.5SMC36CA-E3/57T application, or 1.5SMC36CA-E3/57T equivalent, this device is evaluated for bidirectional surge suppression where low clamping ratio, fast response time, and AEC-Q101-qualified reliability are critical selection criteria.
Technical Context
The 1.5SMC36CA-E3/57T operates as a bidirectional avalanche diode with symmetrical breakdown behavior in both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and repeatable clamping performance under repetitive surge conditions.
Thermally, it delivers 6.5 W steady-state power dissipation on infinite heatsink at 50 °C ambient and exhibits RθJA = 75 °C/W and RθJL = 15 °C/W - confirming suitability for compact PCB layouts with localized copper pad thermal management per JEDEC DO-214AB footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 30.8 V - maximum continuous reverse voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 34.2–37.8 V at 1.0 mA - guaranteed avalanche initiation range; ensures predictable turn-on during transient events. |
| VC (Clamping) | 49.9 V at IPPM = 30.1 A - peak voltage seen by protected circuit during 10/1000 µs surge; determines stress on downstream components. |
| PPPM | 1500 W - peak transient energy absorption capability; enables protection against IEC 61000-4-5 Level 4 surges. |
| ID (Leakage) | <1.0 µA at VWM - minimal standby power loss and signal integrity impact in high-impedance circuits. |
| TJ max. | +150 °C - supports operation in under-hood automotive and industrial environments with elevated ambient temperatures. |
| Package | SMC (DO-214AB) - standardized surface-mount outline with 8.0 mm × 8.0 mm copper pad requirement for thermal derating compliance. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads; meets UL 94 V-0 flammability rating and J-STD-002 solderability requirements. Bidirectional construction has no polarity marking - terminals are functionally symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals serve identical roles; bidirectional clamping occurs regardless of voltage polarity applied across the device. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional TVS architecture | Enables single-device protection of AC lines, differential buses (e.g., RS-485), and ungrounded sensor interfaces without polarity concerns. |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-earth) in properly designed front-end circuits. |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage stress on protected ICs - e.g., keeps 3.3 V or 5 V logic rails within safe operating limits during transients. |
| AEC-Q101 qualified variant available | Confirms reliability for automotive applications including engine control units, body electronics, and ADAS sensor modules. |
| MSL Level 1 (260 °C reflow) | Allows standard lead-free SMT assembly without moisture sensitivity handling or baking requirements. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between power rail and ground to shunt surge energy before reaching LDOs or microcontrollers. Use Value: Withstands 1500 W surges while limiting rail voltage to ≤49.9 V - preventing latch-up or permanent damage to 36 V-rated input stages. |
Use Scenario: Shielding analog output lines of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across signal and return lines to suppress EFT bursts and electrostatic discharge. Use Value: Sub-1 µA leakage preserves millivolt-level signal accuracy; 49.9 V clamping prevents op-amp saturation during 4 kV contact discharge events. |
| Telecom DSL Line Protection | Consumer USB Port Surge Guard |
Use Scenario: Safeguarding ADSL/VDSL line drivers and receivers from lightning-induced longitudinal surges on twisted-pair copper lines. IC Role / Device Role / Timing Role: Bidirectional TVS installed differential-mode across tip/ring, referenced to chassis ground via GDT or MOV. Use Value: Symmetrical 30.8 V standoff allows operation across ±30 V common-mode range; 10 ns response time intercepts fast-rising surges before IC damage occurs. |
Use Scenario: Adding secondary surge protection on USB 2.0 VBUS and data lines in smart home hubs and docking stations. IC Role / Device Role / Timing Role: Standoff-rated TVS placed upstream of USB switch ICs and ESD arrays to absorb bulk energy before low-capacitance ESD devices engage. Use Value: 1500 W rating handles multi-event surge stress; RoHS-compliant E3 suffix ensures compliance with global environmental regulations. |
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 (30.8 V) and VC (49.9 V), but lower PPPM (600 W); SMB package (smaller footprint, higher RθJA). | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); unsuitable for IEC 61000-4-5 line surges. | Select when board space is constrained and surge threat level is limited to ESD or low-repetition switching noise. |
| 1.5KE36CA | Same electrical specs, but axial-leaded DO-15 package; higher mechanical robustness but incompatible with automated SMT assembly. | Used in through-hole prototyping or legacy repair; not viable for high-volume SMT production. | Choose only for hand-soldered evaluation or field replacement where SMT infrastructure is unavailable. |
Compared with SMBJ36CA and 1.5KE36CA, the 1.5SMC36CA-E3/57T uniquely balances 1500 W surge capacity, SMT manufacturability, and bidirectional symmetry - making it the preferred choice for production-grade automotive and industrial PCBs requiring full IEC 61000-4-5 compliance.
Availability
1.5SMC36CA-E3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface design, and telecom line card development requiring stable component supply, RoHS-compliant sourcing, and long-term lifecycle support.
Supply support for 1.5SMC36CA-E3/57T 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 efficiency, and application-specific validation.
The 1.5SMC Series targets high-energy transient suppression in harsh environments - engineered for automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 qualification are mandatory.
FAQ
What does the "CA" suffix mean in 1.5SMC36CA-E3/57T?
The "CA" suffix in 1.5SMC36CA-E3/57T denotes a bidirectional configuration - meaning the device provides symmetrical transient voltage suppression in both forward and reverse directions. This eliminates polarity concerns during placement and enables use in AC-coupled or differential signal paths, unlike unidirectional variants (e.g., 1.5SMC36A) that require correct cathode orientation. The 1.5SMC36CA-E3/57T achieves this via dual-avalanche junction construction.
Is 1.5SMC36CA-E3/57T AEC-Q101 qualified?
The base part number 1.5SMC36CA-E3/57T is RoHS-compliant and commercial-grade; however, AEC-Q101 qualification is available under the automotive ordering code 1.5SMC36CAHE3_A/H or 1.5SMC36CAHM3_A/H. These variants include additional stress testing per AEC-Q101 Rev D and are marked with HE3 or HM3 suffixes. The 1.5SMC36CA-E3/57T itself is not AEC-Q101 certified unless ordered with the HE3/HM3 automotive prefix.
What is the clamping voltage of 1.5SMC36CA-E3/57T at its rated peak pulse current?
The 1.5SMC36CA-E3/57T has a maximum clamping voltage (VC) of 49.9 V at its rated peak pulse current (IPPM) of 30.1 A, measured using the standard 10/1000 µs double-exponential surge waveform. This value is guaranteed across temperature and represents the highest voltage the protected circuit will experience during a full-power transient event - critical for ensuring downstream ICs remain within absolute maximum ratings.
Can 1.5SMC36CA-E3/57T be used in place of a unidirectional TVS like 1.5SMC36A?
No - the 1.5SMC36CA-E3/57T is bidirectional and lacks polarity marking, while the 1.5SMC36A is unidirectional with a cathode band. Substituting them requires verifying circuit topology: 1.5SMC36CA-E3/57T works only where symmetrical protection is needed (e.g., AC lines, differential pairs), whereas 1.5SMC36A is required for DC rail-to-ground protection with defined polarity. Using 1.5SMC36CA-E3/57T in a unidirectional layout may result in improper clamping or failure to protect.
What PCB pad layout is required for thermal performance of 1.5SMC36CA-E3/57T?
The 1.5SMC36CA-E3/57T must be mounted on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve rated 1500 W peak pulse power and proper thermal derating. Smaller pads reduce surge capability and increase junction temperature - potentially causing premature failure. The SMC (DO-214AB) footprint matches IPC-7351B SO-2022A standards, and thermal vias beneath pads are recommended for high-reliability automotive designs.
1.5SMC36CA-E3/57T 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-E3/57T FAQ
1.How can I place an order for 1.5SMC36CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC36CA-E3/57T 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-E3/57T reliable?
The price and inventory of 1.5SMC36CA-E3/57T 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-E3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC36CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC36CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC36CA-E3/57T?
1.5SMC36CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC36CA-E3/57T 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-E3/57T?
For technical support, including 1.5SMC36CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC36CA-E3/57T requirements.
6.How does Aetrix verify that 1.5SMC36CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC36CA-E3/57T 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-E3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC36CA-E3/57T?
All 1.5SMC36CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC36CA-E3/57T, 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-E3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC36CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC36CA-E3/57T Tags
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