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Vishay General Semiconductor - Diodes Division 1.5SMC47CAHM3_A/H
- Part No.:
- 1.5SMC47CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC47CAHM3_A/H.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,627
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Product details
Overview
1.5SMC47CAHM3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 47 V standoff voltage (VWM), 64.8 V clamping voltage (VC) at 23.1 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the 1.5SMC47CAHM3_A/H datasheet, 1.5SMC47CAHM3_A/H pinout, 1.5SMC47CAHM3_A/H application, or 1.5SMC47CAHM3_A/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification for automotive use, SMC (DO-214AB) package thermal performance, and compliance with UL 497B surge protector requirements.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ at 40.2 V), but triggers into low-impedance conduction when transient voltage exceeds its breakdown threshold (44.7–49.4 V at 1 mA). Its bidirectional architecture ensures symmetrical clamping in both polarities without polarity dependence.
Thermally, it uses a glass-passivated junction mounted in an SMC package with RθJA = 75 °C/W and RθJL = 15 °C/W, enabling reliable operation up to TJ = 150 °C. It meets J-STD-020 MSL Level 1 and passes JESD201 Class 2 whisker testing with matte tin-plated leads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 40.2 V - maximum continuous reverse working voltage before clamping initiates |
| VBR (Breakdown) | 44.7–49.4 V at 1 mA - guaranteed voltage range where device transitions to conduction |
| VC (Clamping) | 64.8 V at IPPM = 23.1 A - peak voltage seen by protected circuit during 10/1000 µs surge |
| PPPM | 1500 W - surge energy handling capacity per single 10/1000 µs pulse |
| ID (Leakage) | 1.0 µA max at VWM - minimal standby power loss and signal integrity impact |
| TJ max | 150 °C - maximum junction temperature supporting under-hood automotive deployment |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads; meets UL 94 V-0 flammability rating and J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal (bidirectional) | Terminal where surge current enters during either polarity event; symmetric with cathode |
| Cathode | Current exit terminal (bidirectional) | Terminal where surge current exits during either polarity event; no band marking on bidirectional types |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) without degradation |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Low incremental surge resistance | Minimizes clamping overshoot and improves protection margin for fast-rising transients |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow compatibility up to 260 °C peak temperature |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load-dump and ISO 7637-2 pulses in vehicle body control modules. IC Role / Device Role / Timing Role: Shunt TVS element placed across differential bus lines to clamp transients before they reach transceiver inputs. Use Value: Maintains signal integrity during 12 V system load dump (up to 35 V, 400 ms) and prevents latch-up in compliant transceivers. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers against field-wiring induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on front-end optocoupler input stage, upstream of current-limiting resistor. Use Value: Limits transient voltage to ≤64.8 V, ensuring input stage remains within absolute maximum ratings during 1 kV/500 A surge events. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Secondary-side surge suppression on Ethernet PHY power rails (3.3 V/5 V) in PoE-powered switches. IC Role / Device Role / Timing Role: Fast-response clamping device parallel to LDO output, triggered by ESD or lightning-induced coupling. Use Value: Clamps 8 kV contact ESD (IEC 61000-4-2) to <65 V within <1 ns, preventing LDO damage and system reset. |
Use Scenario: Input-stage transient protection for universal-input (90–264 VAC) AC-DC adapters used in smart home hubs. IC Role / Device Role / Timing Role: Bidirectional clamp across bridge rectifier output to absorb line-to-line surges before bulk capacitor. Use Value: Handles repetitive 1500 W surges without derating, extending capacitor lifetime and meeting UL 1449 Type 4 SPD requirements. |
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 | Lower PPPM (600 W), same VWM/VC, SMB package (smaller footprint, higher RθJA) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 | Select when board space is constrained and surge threat level is ≤Level 2 |
| 1.5KE47CA | Higher RθJA (100 °C/W), axial-leaded TO-204AE package, same electrical specs | Not SMT-compatible; requires through-hole assembly and larger PCB area | Choose only for legacy through-hole designs or prototyping with breadboard fixtures |
Compared with SMBJ47CA and 1.5KE47CA, the 1.5SMC47CAHM3_A/H delivers superior thermal dissipation in SMT form factor, full AEC-Q101 validation for automotive use, and verified 1500 W surge capability - making it the preferred choice for production-grade automotive and industrial systems requiring long-term reliability and automated assembly.
Availability
1.5SMC47CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter designs requiring stable component supply, AEC-Q101 traceability, and consistent SMC (DO-214AB) packaging.
Supply support for 1.5SMC47CAHM3_A/H 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The 1.5SMC Series was engineered for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness, AEC-Q101 compliance, and repeatable clamping behavior are mandatory.
FAQ
What does the "CA" suffix indicate in 1.5SMC47CAHM3_A/H?
The "CA" suffix denotes a bidirectional configuration: the 1.5SMC47CAHM3_A/H provides symmetrical clamping for both positive and negative transients, unlike unidirectional variants (e.g., 1.5SMC47AHM3_A/H) that protect only one polarity. This makes 1.5SMC47CAHM3_A/H ideal for AC-coupled or floating signal paths where polarity reversal is possible.
Is 1.5SMC47CAHM3_A/H qualified for automotive applications?
Yes, 1.5SMC47CAHM3_A/H carries the HM3 suffix, indicating halogen-free, RoHS-compliant construction and full AEC-Q101 qualification. It has passed stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC standards - certified for use in engine control, body electronics, and ADAS sensor modules.
What is the clamping voltage of 1.5SMC47CAHM3_A/H at rated surge current?
The 1.5SMC47CAHM3_A/H exhibits a maximum clamping voltage (VC) of 64.8 V when subjected to its rated peak pulse current (IPPM) of 23.1 A under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and guarantees protected circuits remain below critical voltage thresholds during surge events.
How does the SMC (DO-214AB) package of 1.5SMC47CAHM3_A/H compare thermally to SMB or SOD packages?
The SMC package of 1.5SMC47CAHM3_A/H offers RθJA = 75 °C/W and RθJL = 15 °C/W - significantly better than SMB (RθJA ≈ 110 °C/W) and far superior to SOD-123 (RθJA > 200 °C/W). This enables 1.5SMC47CAHM3_A/H to sustain 1500 W surges with less junction temperature rise, supporting higher reliability in compact, high-density layouts.
Does 1.5SMC47CAHM3_A/H meet UL recognition requirements?
Yes, 1.5SMC47CAHM3_A/H is Underwriters Laboratories (UL) recognized under file E136766 for both unidirectional and bidirectional devices, complying with UL 497B for surge protective components. This certification validates its safety and performance in commercial and industrial surge protection assemblies.
1.5SMC47CAHM3_A/H 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC47CAHM3_A/H FAQ
1.How can I place an order for 1.5SMC47CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC47CAHM3_A/H 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 1.5SMC47CAHM3_A/H reliable?
The price and inventory of 1.5SMC47CAHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC47CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC47CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC47CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC47CAHM3_A/H?
1.5SMC47CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC47CAHM3_A/H 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 1.5SMC47CAHM3_A/H?
For technical support, including 1.5SMC47CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC47CAHM3_A/H requirements.
6.How does Aetrix verify that 1.5SMC47CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC47CAHM3_A/H 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 1.5SMC47CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC47CAHM3_A/H?
All 1.5SMC47CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC47CAHM3_A/H, 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 1.5SMC47CAHM3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC47CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC47CAHM3_A/H Tags
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