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Vishay General Semiconductor - Diodes Division 1.5SMC47A-E3/57T
- Part No.:
- 1.5SMC47A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC47A-E3/57T.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:796
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Product details
Overview
1.5SMC47A-E3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 47 V breakdown voltage (VBR = 44.7–49.4 V at 1 mA), 40.2 V stand-off voltage (VWM), 64.8 V clamping voltage (VC) at 23.1 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and DC power rail protection.
For engineers reviewing the 1.5SMC47A-E3/57T datasheet, 1.5SMC47A-E3/57T pinout, 1.5SMC47A-E3/57T application, or 1.5SMC47A-E3/57T equivalent, this page delivers verified electrical parameters, SMC (DO-214AB) package details, clamping performance under surge conditions, thermal derating behavior, and AEC-Q101-compliant alternatives for automotive-grade design-in.
Technical Context
The 1.5SMC47A-E3/57T operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold to clamp transients. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1 µA at VWM), while the SMC package supports automated placement and meets MSL Level 1 reflow requirements (260 °C peak).
It delivers 1500 W peak pulse power handling with <1 ns response time and low incremental surge resistance, enabling effective suppression of lightning-induced surges (IEC 61000-4-5) and inductive switching spikes. Thermal resistance is 75 °C/W (junction-to-ambient) on standard 8 mm × 8 mm copper pads, with full derating above 25 °C ambient per Figure 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at 1 mA - defines precise avalanche onset range for reliable clamping trigger |
| VWM | 40.2 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 64.8 V at 23.1 A - clamped voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 1500 W - peak transient power absorption capability without failure under standardized surge waveform |
| IPPM | 23.1 A - maximum non-repetitive surge current it safely diverts away from protected circuitry |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with cathode band marking and 0.320" body length |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 compliant. Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased terminal | Connected to protected line; conducts during overvoltage to shunt surge to ground |
| Anode (unmarked end) | Reference/ground terminal | Typically tied to system ground or low-impedance return path for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables single-device protection against severe transients like ISO 7637-2 Pulse 5a (load dump) in 12 V systems |
| 64.8 V clamping at 23.1 A | Keeps downstream 48 V-rated components (e.g., CAN transceivers, microcontrollers) within safe operating area |
| Low 1 µA leakage @ 40.2 V | Minimizes standby power loss and avoids false triggering in high-impedance sensor bias networks |
| AEC-Q101 qualified option available | Supports automotive qualification path via HE3/HM3 suffix variants for engine control and ADAS subsystems |
| MSL Level 1 reflow compatibility | Permits standard SMT assembly without pre-baking, reducing manufacturing complexity and cost |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay environments exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and ECU input to clamp transients before they reach precision ADC front-end. Use Value: Limits voltage excursion to ≤64.8 V during 1500 W surges, preserving 12-bit measurement integrity and preventing latch-up in downstream op-amps. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controller (PLC) modules subject to field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff-connected TVS on each input channel, referenced to common ground, absorbing fast-rising inductive kickback from solenoid drivers. Use Value: Clamps 10/1000 µs transients to 64.8 V within nanoseconds, ensuring input Schmitt triggers remain functional and avoiding firmware lockup. |
| DC Power Rail Protection | Telecom Line Interface |
Use Scenario: Secondary overvoltage protection on +48 V telecom power distribution boards upstream of DC-DC converters. IC Role / Device Role / Timing Role: Parallel-mounted TVS across bulk capacitor input to absorb residual surges passing through primary MOV-based protection. Use Value: Provides precise 40.2 V standoff and 64.8 V clamping, preventing converter IC damage during repeated 1500 W surge events per IEC 61000-4-5. |
Use Scenario: Protecting RS-485 transceiver data lines in outdoor base station cabinets vulnerable to lightning-induced ground potential rise. IC Role / Device Role / Timing Role: Bidirectional variant (e.g., 1.5SMC47CA) used here; unidirectional 1.5SMC47A-E3/57T applies to DC bias rails feeding the transceiver. Use Value: Maintains <1 µA leakage at 40.2 V, avoiding signal distortion on 120 Ω differential bus while delivering sub-ns response to fast 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 |
|---|---|---|---|
| SMAJ47A | Lower peak power (400 W), same VBR range, SMA package (smaller footprint, higher RθJA) | Not suitable for 1500 W surge events; limited to low-energy ESD or secondary protection | Select only if board space is constrained and surge energy is confirmed ≤400 W |
| 1.5SMC47AHE3_A | Identical electrical specs; RoHS-compliant + AEC-Q101 qualified; same SMC package, H-tape packaging | Required for automotive production; supports PPAP documentation and extended temperature validation | Choose for Tier-1 automotive programs where qualification traceability is mandatory |
Compared with SMAJ47A, the 1.5SMC47A-E3/57T provides 3.75× higher surge power handling and lower thermal resistance, making it appropriate for primary protection; versus 1.5SMC47AHE3_A, it lacks AEC-Q101 certification but offers identical performance for commercial/industrial use at lower cost.
Availability
1.5SMC47A-E3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and DC power rail protection requiring stable component supply, RoHS compliance, and SMC-package compatibility with standard pick-and-place equipment.
Supply support for 1.5SMC47A-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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive qualification.
The 1.5SMC Series was developed for high-power transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where robustness against lightning, load dump, and ESD is mission-critical.
FAQ
What is the clamping voltage of the 1.5SMC47A-E3/57T and how is it measured?
The 1.5SMC47A-E3/57T has a maximum clamping voltage (VC) of 64.8 V, measured at a peak pulse current (IPPM) of 23.1 A using a standardized 10/1000 µs double-exponential waveform. This value reflects the voltage across the device terminals during worst-case surge conduction and is critical for ensuring protected ICs remain below their absolute maximum ratings. The 1.5SMC47A-E3/57T achieves this with low incremental resistance, minimizing voltage overshoot beyond VC.
Is the 1.5SMC47A-E3/57T suitable for automotive applications?
The 1.5SMC47A-E3/57T itself is RoHS-compliant and commercial-grade (E3 suffix); it is not AEC-Q101 qualified. However, Vishay offers the functionally identical 1.5SMC47AHE3_A variant - same VBR, VWM, and VC - which carries full AEC-Q101 qualification for automotive use. For under-hood or ADAS designs requiring qualification, specify the HE3 variant; the 1.5SMC47A-E3/57T remains valid for non-automotive industrial or telecom applications.
What does the "-E3/57T" suffix mean in 1.5SMC47A-E3/57T?
In 1.5SMC47A-E3/57T, "E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads; "57T" specifies packaging: 7-inch diameter plastic tape and reel containing 850 units. This format is optimized for high-speed SMT placement. The base part 1.5SMC47A defines the 47 V unidirectional TVS electrical characteristics, while suffixes encode compliance, qualification, and logistics - all confirmed in Vishay document 88303.
How does the 1.5SMC47A-E3/57T compare to bidirectional TVS diodes like 1.5SMC47CA?
The 1.5SMC47A-E3/57T is unidirectional and must be oriented with cathode toward the protected line; it blocks forward current and clamps only reverse surges. In contrast, 1.5SMC47CA is bidirectional - symmetrical clamping in both polarities - suited for AC lines or differential buses like RS-485. Both share identical VBR, VC, and PPPM, but the 1.5SMC47A-E3/57T offers lower leakage (<1 µA) in forward bias, making it preferable for DC bias rail protection where polarity is fixed.
What PCB layout considerations are critical for optimal performance of the 1.5SMC47A-E3/57T?
For optimal thermal and electrical performance, the 1.5SMC47A-E3/57T must be mounted on minimum 8.0 mm × 8.0 mm copper pads per terminal (per Vishay Fig. 2), with short, low-inductance traces to ground. Avoid routing sensitive signals near its anode/cathode paths. Use thermal vias under pads if ambient exceeds 70 °C. The SMC package's RθJA of 75 °C/W assumes this layout; smaller pads increase junction temperature and reduce surge endurance.
1.5SMC47A-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:
- 1
- Bidirectional Channels:
- -
- 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)
1.5SMC47A-E3/57T FAQ
1.How can I place an order for 1.5SMC47A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC47A-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 1.5SMC47A-E3/57T reliable?
The price and inventory of 1.5SMC47A-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 1.5SMC47A-E3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC47A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC47A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC47A-E3/57T?
1.5SMC47A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC47A-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 1.5SMC47A-E3/57T?
For technical support, including 1.5SMC47A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC47A-E3/57T requirements.
6.How does Aetrix verify that 1.5SMC47A-E3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC47A-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 1.5SMC47A-E3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC47A-E3/57T?
All 1.5SMC47A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC47A-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 1.5SMC47A-E3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC47A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC47A-E3/57T Tags
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