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Vishay General Semiconductor - Diodes Division 1.5SMC47CA-E3/57T
- Part No.:
- 1.5SMC47CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC47CA-E3/57T.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:1,504
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Product details
Overview
1.5SMC47CA-E3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in DC power rails and signal lines. It features a 47 V standoff voltage (VWM), 64.8 V maximum clamping voltage (VC) at 23.1 A peak pulse current (IPPM), 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 protection.
For engineers reviewing the 1.5SMC47CA-E3/57T datasheet, 1.5SMC47CA-E3/57T pinout, 1.5SMC47CA-E3/57T application, or 1.5SMC47CA-E3/57T equivalent, this device delivers verified bidirectional clamping performance, AEC-Q101-qualified variants (HE3/HM3), RoHS-compliant SMC (DO-214AB) packaging, and stable thermal derating up to 150 °C junction temperature.
Technical Context
The 1.5SMC47CA-E3/57T operates as a silicon avalanche diode with symmetrical breakdown characteristics in both directions, enabling protection of AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures low leakage (<1.0 μA at 40.2 V) and stable VBR (44.7–49.4 V at 1.0 mA test current).
Designed for high-energy transients, it sustains 1500 W peak pulse power under standardized 10/1000 μs surge conditions with 0.01% duty cycle, and exhibits fast response time (<1.0 ps) and low incremental surge resistance - critical for safeguarding sensitive MOSFET gates and microcontroller I/O pins against ESD and lightning-induced surges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 40.2 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below breakdown. |
| VBR (Breakdown) | 44.7–49.4 V at 1.0 mA - Confirmed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping) | 64.8 V at 23.1 A IPPM - Peak voltage seen by protected circuit during full-rated surge; determines downstream component stress. |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 surge immunity. |
| Package | SMC (DO-214AB) - Surface-mount package with 7.75 mm × 6.22 mm footprint; compatible with automated placement and meets UL 94 V-0. |
| TJ max | 150 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial ambient environments. |
| Leakage (ID) | <1.0 μA at VWM - Minimal standby current draw; preserves battery life and avoids false triggering in low-power systems. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking - terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | No cathode band; either terminal serves as anode or cathode depending on instantaneous voltage polarity - enables AC or floating rail protection. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Withstands IEC 61000-4-5 combined wave surges up to 4 kV/2 Ω without degradation. |
| Glass-passivated junction | Ensures long-term reliability and stable VBR drift <±5% over 1000 hrs at TJ = 125 °C. |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles - no moisture sensitivity handling required. |
| AEC-Q101 qualification option | HE3/HM3 variants available for automotive applications requiring validated stress testing per JESD22-A108. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes let-through energy to protected ICs - critical for 3.3 V/5 V logic interface survivability. |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and MEMS pressure sensors from load-dump and ISO 7637-2 pulses in engine control units. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pair or supply rail to clamp transients before reaching ASIC input stages. Use Value: Maintains signal integrity during 12 V system load dump (up to 60 V, 400 ms) while limiting clamped voltage to 64.8 V - within safe margin of 70 V-rated transceivers. |
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: Parallel-connected TVS across loop terminals to shunt surge current away from precision op-amps and ADC front-ends. Use Value: Clamps 1 kV/500 Ω surge to ≤64.8 V within <1 ns, preventing latch-up or parametric shift in 24 V-powered analog signal conditioning circuits. |
| Telecom Line Card Protection | Consumer USB Power Delivery |
Use Scenario: Safeguarding Ethernet PHYs and PoE injectors against lightning-induced surges on RJ45 ports per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary-level TVS on transformer-coupled data lines, coordinated with secondary-side GDTs and polymer PTCs. Use Value: Absorbs 1500 W surge energy without failure, maintaining isolation barrier integrity and avoiding false link-down events during transient exposure. |
Use Scenario: Overvoltage suppression on USB-C VBUS lines exposed to adapter fault conditions or hot-plug inrush spikes. IC Role / Device Role / Timing Role: Secondary-stage clamping device after primary fuse and eFuse, limiting VBUS overshoot during 20 V PD negotiation faults. Use Value: Responds faster than ceramic varistors (<1 ns), clamping 20 V faults to 64.8 V - well below 70 V absolute maximum rating of common USB PD controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ47CA | Same VWM (40.2 V) and VC (64.8 V), but lower PPPM (600 W); SMB package (smaller footprint, higher RθJA). | Limited to lower-energy surges (IEC 61000-4-5 Level 2); unsuitable for automotive load-dump or telecom lightning scenarios. | Select when board space is constrained and surge threat level is ≤600 W - verify thermal margin with RθJA = 110 °C/W. |
| 1.5KE47CA | Same electrical specs, but axial-leaded DO-15 package; higher mounting inductance and manual assembly requirement. | Not suitable for high-density SMT production; incompatible with automated pick-and-place or reflow processes. | Choose only for prototyping, legacy repair, or through-hole designs where SMT is unavailable. |
Compared with SMBJ47CA and 1.5KE47CA, the 1.5SMC47CA-E3/57T uniquely balances 1500 W surge capacity, SMT manufacturability, and automotive-grade reliability in a compact DO-214AB outline - making it the preferred choice for volume production of ruggedized electronics.
Availability
1.5SMC47CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, and telecom line card protection requiring stable component supply, consistent RoHS compliance, and traceable lot-level documentation.
Supply support for 1.5SMC47CA-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 handling, and automotive qualification.
The 1.5SMC Series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness, repeatable clamping, and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC47CA-E3/57T under full-rated surge current?
The 1.5SMC47CA-E3/57T has a maximum clamping voltage (VC) of 64.8 V at 23.1 A peak pulse current (IPPM), measured with a 10/1000 μs waveform. This value is guaranteed across temperature and lifetime per Vishay's 88303 specification sheet and ensures protected circuits remain within safe operating limits during standardized surge events. The 1.5SMC47CA-E3/57T maintains this clamping performance with minimal variation over its -65 °C to +150 °C operating range.
Is the 1.5SMC47CA-E3/57T suitable for automotive applications?
Yes - while the 1.5SMC47CA-E3/57T itself is commercial-grade (E3 suffix), the identical 1.5SMC47CAHE3_A variant is AEC-Q101 qualified and shares the same electrical specs, package, and thermal behavior. Engineers deploying the 1.5SMC47CA-E3/57T in non-safety-critical automotive subsystems (e.g., body control modules, infotainment power rails) may use it with appropriate system-level validation. The 1.5SMC47CA-E3/57T meets MSL Level 1 and withstands 260 °C peak reflow, aligning with automotive PCB assembly requirements.
How does the bidirectional design of the 1.5SMC47CA-E3/57T affect its layout and usage?
The 1.5SMC47CA-E3/57T has no polarity marking and functions identically in both directions - simplifying PCB layout by eliminating orientation constraints. It is ideal for protecting AC-coupled signals, transformer-isolated interfaces, or floating power domains where voltage polarity reverses. Unlike unidirectional TVS diodes, the 1.5SMC47CA-E3/57T requires no attention to anode/cathode placement, reducing assembly errors and supporting symmetric routing in differential pairs or dual-rail systems.
What is the thermal resistance of the 1.5SMC47CA-E3/57T, and how does it impact power dissipation?
The 1.5SMC47CA-E3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per Vishay's test condition. At 25 °C ambient, its steady-state power dissipation (PD) is rated at 6.5 W - meaning junction temperature rise is ~488 °C above ambient at full PD, which exceeds its 150 °C limit. Therefore, the 1.5SMC47CA-E3/57T is intended for transient, not continuous, power dissipation; its 1500 W rating applies only to short-duration pulses (≤50 ms), not DC loading.
Can the 1.5SMC47CA-E3/57T replace older 1.5KE series TVS diodes in existing designs?
The 1.5SMC47CA-E3/57T matches the electrical specifications (VWM, VBR, VC, PPPM) of the through-hole 1.5KE47CA but uses the SMC (DO-214AB) surface-mount package instead of DO-15. Direct replacement requires PCB redesign to accommodate the smaller 7.75 mm × 6.22 mm footprint and solder-pad layout. No electrical revalidation is needed for surge performance, but thermal and mechanical stress analysis must confirm suitability for the new mounting configuration - especially in high-vibration environments where SMT adhesion is critical.
1.5SMC47CA-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):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 23.1A
- 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)
1.5SMC47CA-E3/57T FAQ
1.How can I place an order for 1.5SMC47CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC47CA-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 1.5SMC47CA-E3/57T reliable?
The price and inventory of 1.5SMC47CA-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 1.5SMC47CA-E3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC47CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC47CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC47CA-E3/57T?
1.5SMC47CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC47CA-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 1.5SMC47CA-E3/57T?
For technical support, including 1.5SMC47CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC47CA-E3/57T requirements.
6.How does Aetrix verify that 1.5SMC47CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC47CA-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 1.5SMC47CA-E3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC47CA-E3/57T?
All 1.5SMC47CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC47CA-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 1.5SMC47CA-E3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC47CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC47CA-E3/57T Tags
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