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Vishay General Semiconductor - Diodes Division 1.5SMC47CAHE3/57T
- Part No.:
- 1.5SMC47CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC47CAHE3/57T.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,110
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Product details
Overview
1.5SMC47CAHE3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on signal and power lines. It features a 40.2 V stand-off voltage (VWM), 44.7–49.4 V breakdown voltage (VBR) at 1 mA, 64.8 V maximum clamping voltage (VC) at 23.1 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC47CAHE3/57T datasheet, 1.5SMC47CAHE3/57T pinout, 1.5SMC47CAHE3/57T application, or 1.5SMC47CAHE3/57T equivalent, this AEC-Q101 qualified, RoHS-compliant bidirectional TVS delivers verified clamping performance, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for automotive-grade ESD and lightning surge resilience in harsh environments.
Technical Context
The 1.5SMC47CAHE3/57T operates as a voltage-clamping device that conducts above its breakdown threshold to shunt transient energy away from sensitive downstream circuitry. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints.
It uses a glass-passivated silicon junction for stable avalanche characteristics and fast response (<1 ns), with thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-leads). The device is rated for repetitive 0.01% duty cycle surges and supports operating junction temperatures from –65 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 40.2 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 44.7–49.4 V at 1 mA - Verified avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping) | 64.8 V at 23.1 A - Peak voltage seen by protected circuit under 10/1000 µs surge; limits stress on downstream ICs. |
| PPPM | 1500 W - Surge energy handling capacity per IEEE C62.35 10/1000 µs waveform; suitable for lightning and inductive switching events. |
| IPPM | 23.1 A - Peak pulse current capability at rated clamping voltage; determines minimum trace width and PCB layout robustness. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial ambient conditions. |
| Package | SMC (DO-214AB) - Surface-mount outline with 8.0 mm × 8.0 mm copper pad requirement; supports automated placement and reflow. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node in bidirectional configuration | No polarity marking; symmetric terminals enable AC or differential line protection without orientation dependency. |
| Cathode | Current exit terminal in forward bias; common node in bidirectional configuration | Identical electrical role to Anode due to bidirectional construction; both terminals function identically under reverse or forward surge. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and ADAS sensor interfaces under temperature cycling, humidity, and mechanical shock stress. |
| 1500 W peak pulse power | Enables single-device protection against IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges on 12 V/24 V vehicle power rails. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V or 5 V logic interfacing with higher-voltage domains. |
| Glass-passivated junction | Ensures long-term stability of breakdown voltage and leakage current across temperature and lifetime; reduces parameter drift in industrial deployments. |
| MSL Level 1 rating | Permits standard SMT reflow without baking; eliminates pre-conditioning delays in high-volume manufacturing. |
Applications
| Automotive Sensor Interface | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and jump-start transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to divert surge energy before reaching signal conditioning circuitry. Use Value: Maintains signal integrity under ±100 V/50 ms load dump per ISO 7637-2 while preserving <1 µA leakage at 40.2 V operating voltage. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring induced surges and ground-loop transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on each channel's input path, coordinated with series impedance to limit fault current into optocoupler or Schmitt trigger inputs. Use Value: Clamps 1 kV/500 A surges to ≤65 V within <1 ns, preventing latch-up or permanent damage to microcontroller GPIOs. |
| Telecom Line Card Protection | Consumer Power Adapter ESD Shielding |
Use Scenario: Secondary surge suppression on Ethernet PHY interface lines (e.g., PoE data pairs) subjected to induced lightning surges in outdoor telecom cabinets. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp between differential pair and ground, complementing primary GDT or MOV-based front-end protection. Use Value: Limits transient overshoot to <65 V while maintaining <0.5 pF junction capacitance at 0 V bias - preserving 100BASE-TX signal integrity. |
Use Scenario: Input-stage surge protection on 5 V/9 V USB-C power adapter secondary-side outputs exposed to user-handling ESD and cable coupling events. IC Role / Device Role / Timing Role: Final-line defense against contact discharge (IEC 61000-4-2 ±8 kV) and system-level fast transients before reaching USB PD controller or LDO. Use Value: Achieves sub-100 ns response and clamps ±15 kV ESD events to <65 V, preventing brownout or reset of connected devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ45CA | Lower peak power (600 W), smaller SMB package (DO-214AA), same VWM (45.0 V) and VC (73.0 V) | Limited to lower-energy transients (e.g., IEC 61000-4-2 only); unsuitable for ISO 7637-2 load dump or lightning. | Select when board space is constrained and surge threat level is limited to ESD and minor inductive spikes. |
| 1.5KE47CA | Through-hole TO-204AE (DO-15) package, identical VWM/VBR/VC, but slower thermal recovery and no AEC-Q101 qualification | Not qualified for automotive; requires manual assembly or wave soldering; less suitable for high-reliability automated production. | Choose only for legacy through-hole designs where rework to SMD is impractical and automotive qualification is not required. |
Compared with SMBJ45CA and 1.5KE47CA, the 1.5SMC47CAHE3/57T uniquely combines AEC-Q101 qualification, 1500 W surge rating, and SMC surface-mount compatibility - making it the only option among the three validated for automotive front-end electronics requiring zero-layout-change upgrades from legacy TVS solutions.
Availability
1.5SMC47CAHE3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line cards, and consumer power adapter protection requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC47CAHE3/57T 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, MOSFETs, and protection devices with emphasis on reliability, precision, and automotive-grade validation.
The 1.5SMC Series is engineered specifically for high-power transient suppression in automotive, industrial, and telecom infrastructure - delivering consistent clamping performance under extreme thermal and surge stress.
FAQ
What is the clamping voltage of the 1.5SMC47CAHE3/57T under a 10/1000 µs surge?
The 1.5SMC47CAHE3/57T has a maximum clamping voltage (VC) of 64.8 V at 23.1 A peak pulse current under the standardized 10/1000 µs waveform. This value is measured per JEDEC and IEC 61000-4-5 test conditions and reflects the actual voltage imposed on protected circuitry during worst-case surge events - critical for validating downstream IC survivability.
Is the 1.5SMC47CAHE3/57T qualified for automotive applications?
Yes, the 1.5SMC47CAHE3/57T carries AEC-Q101 qualification, confirmed by Vishay's documentation (Document Number 88303, Revision 09-Mar-2026). Its HE3 suffix explicitly denotes RoHS-compliant and AEC-Q101 qualified status, enabling use in engine control units, body electronics, and ADAS sensor modules without additional qualification testing.
What does the "CA" suffix mean in 1.5SMC47CAHE3/57T?
The "CA" suffix in 1.5SMC47CAHE3/57T indicates a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities. Unlike unidirectional variants (e.g., 1.5SMC47A), the CA version has no cathode marking and functions identically regardless of voltage polarity applied across its terminals.
What is the thermal resistance of the 1.5SMC47CAHE3/57T?
The 1.5SMC47CAHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-leads resistance (RθJL) of 15 °C/W, measured on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. These values define power derating curves and must be applied when operating above 25 °C ambient to avoid exceeding the +150 °C maximum junction temperature.
Does the 1.5SMC47CAHE3/57T require special PCB layout considerations?
Yes - the 1.5SMC47CAHE3/57T requires minimum 8.0 mm × 8.0 mm copper pad areas per terminal to achieve rated 1500 W pulse power. Short, wide traces and direct grounding to large copper planes are essential to minimize inductance and ensure full clamping performance; inadequate layout may raise effective VC by 10–20% under surge conditions.
1.5SMC47CAHE3/57T 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:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC47CAHE3/57T FAQ
1.How can I place an order for 1.5SMC47CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC47CAHE3/57T 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 1.5SMC47CAHE3/57T reliable?
The price and inventory of 1.5SMC47CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC47CAHE3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC47CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC47CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC47CAHE3/57T?
1.5SMC47CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC47CAHE3/57T 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 1.5SMC47CAHE3/57T?
For technical support, including 1.5SMC47CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC47CAHE3/57T requirements.
6.How does Aetrix verify that 1.5SMC47CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC47CAHE3/57T 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 1.5SMC47CAHE3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC47CAHE3/57T?
All 1.5SMC47CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC47CAHE3/57T, 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 1.5SMC47CAHE3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC47CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC47CAHE3/57T Tags
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