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Vishay General Semiconductor - Diodes Division 1.5SMC47CAHM3_A/I
- Part No.:
- 1.5SMC47CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC47CAHM3_A/I.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,673
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Product details
Overview
1.5SMC47CAHM3_A/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 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 (10/1000 μs). It protects sensitive ICs and MOSFETs against lightning-induced surges and inductive switching transients in automotive and industrial power rails.
For engineers reviewing the 1.5SMC47CAHM3_A/I datasheet, 1.5SMC47CAHM3_A/I pinout, 1.5SMC47CAHM3_A/I application, or 1.5SMC47CAHM3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, low incremental surge resistance, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 μA leakage at 40.2 V), but triggers into low-impedance conduction when transient voltage exceeds its 47 V standoff threshold. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns).
The 1.5SMC47CAHM3_A/I delivers symmetrical clamping in both directions due to its bidirectional construction, with identical VBR min/max (44.7–49.4 V at 1 mA), VC (64.8 V), and IPPM (23.1 A) regardless of polarity - critical for protecting AC-coupled signal lines and full-bridge power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 47 V - maximum continuous reverse voltage before clamping begins; defines safe operating margin for 48 V nominal systems. |
| VBR (Breakdown) | 44.7–49.4 V at 1 mA - tight tolerance ensures predictable turn-on across temperature and production lot. |
| VC (Clamping) | 64.8 V at 23.1 A (10/1000 μs) - limits transient voltage seen by downstream circuitry during surge events. |
| PPPM | 1500 W - peak surge energy handling capacity; supports IEC 61000-4-5 Level 4 (4 kV) compliance with proper layout. |
| Package | SMC (DO-214AB) - surface-mount package with 7.75 mm × 6.22 mm footprint, MSL Level 1, 260 °C reflow compatible. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness. |
| RoHS & Halogen-Free | Compliant per Vishay HM3 suffix - meets JESD201 Class 2 whisker resistance and UL 94 V-0 flammability. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads; bidirectional symmetry means no polarity marking - both terminals are electrically identical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no band marking required. |
| Terminal 2 | Anode / Cathode (bidirectional) | Electrically symmetric to Terminal 1; enables placement without orientation check in automated assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses, and full-bridge outputs without polarity concerns. |
| 1500 W peak pulse rating | Supports robust surge immunity in harsh environments such as automotive power distribution and industrial motor drives. |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| Low clamping ratio (VC/VWM = 1.38) | Minimizes overvoltage stress on protected components compared to higher-ratio TVS devices. |
| MSL Level 1 & 260 °C reflow | Eliminates moisture sensitivity concerns and supports standard lead-free PCB assembly processes. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 48 V battery-supplied ECUs from load dump and alternator transients. IC Role / Device Role: Shunt-type transient suppressor placed across input rail before DC/DC converter. Use Value: Clamps 120 V transients to ≤64.8 V, preventing damage to 60 V-rated input capacitors and controller ICs. |
Use Scenario: Safeguarding analog sensor inputs (e.g., pressure, temperature) in PLC modules exposed to field wiring noise. IC Role / Device Role: Bidirectional TVS on differential signal pair (e.g., RS-485, CAN FD) to absorb common-mode surges. Use Value: Symmetrical clamping maintains signal integrity while limiting ESD and lightning-induced spikes to <65 V. |
| Telecom Line Card Surge Suppression | Consumer Power Adapter Input Protection |
Use Scenario: Front-end protection of PoE-powered Ethernet switches against induced surges on data lines. IC Role / Device Role: Bidirectional TVS on each twisted pair to clamp mode-common transients without disrupting DC bias. Use Value: Withstands repeated 1500 W pulses while maintaining <1 μA leakage at 47 V - preserving low-power standby operation. |
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters after primary-side isolation. IC Role / Device Role: Final-stage clamping device on 20 V output rail to prevent fault propagation to connected devices. Use Value: Fast response (<1 ns) and low thermal resistance (RθJL = 15 °C/W) ensure reliable energy diversion during short-circuit faults. |
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 = 90 °C/W). | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 without derating. | Select when board space is constrained and surge energy remains ≤600 W. |
| 1.5KE47CA | Through-hole DO-201 package, identical electrical specs, higher mechanical robustness but incompatible with SMT. | Requires manual or wave soldering; not suitable for high-volume automated production. | Choose only for legacy through-hole designs or prototyping where rework flexibility is prioritized. |
Compared with SMBJ47CA and 1.5KE47CA, the 1.5SMC47CAHM3_A/I uniquely combines 1500 W surge capability, AEC-Q101 qualification, halogen-free compliance, and SMC package - making it the preferred choice for automotive and industrial SMT designs requiring certified reliability and high-energy clamping.
Availability
1.5SMC47CAHM3_A/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom line cards, and consumer power adapters requiring stable component supply and long-term lifecycle support.
Supply support for 1.5SMC47CAHM3_A/I 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, efficiency, and application-specific optimization.
The 1.5SMC Series is designed for high-energy transient suppression in demanding environments - targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, 1500 W pulse handling, and SMT manufacturability are essential.
FAQ
What is the clamping voltage of the 1.5SMC47CAHM3_A/I under a 10/1000 μs surge?
The 1.5SMC47CAHM3_A/I has a maximum clamping voltage (VC) of 64.8 V when subjected to a 23.1 A peak pulse current with a 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88303 and defines the upper voltage limit imposed on protected circuitry during standardized surge events.
Is the 1.5SMC47CAHM3_A/I suitable for automotive applications?
Yes, the 1.5SMC47CAHM3_A/I is AEC-Q101 qualified (indicated by the "HM3" and "_A" suffixes), meaning it has passed stress tests for temperature cycling, high-temperature reverse bias, and ESD robustness required for automotive electronics. It is commonly used in engine control units, body control modules, and ADAS sensor interfaces.
How does the bidirectional design of the 1.5SMC47CAHM3_A/I affect its use in circuit protection?
The bidirectional nature of the 1.5SMC47CAHM3_A/I allows it to suppress voltage transients of either polarity symmetrically - ideal for protecting AC-coupled lines, differential buses like RS-485 or CAN, and full-bridge power stages. Unlike unidirectional TVS diodes, it requires no polarity orientation during placement.
What is the thermal resistance of the 1.5SMC47CAHM3_A/I, and how does it impact power dissipation?
The 1.5SMC47CAHM3_A/I has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W and junction-to-ambient (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads. This enables reliable 6.5 W steady-state power dissipation and efficient heat transfer during repetitive surge events.
Does the 1.5SMC47CAHM3_A/I meet RoHS and halogen-free requirements?
Yes, the "HM3" suffix confirms the 1.5SMC47CAHM3_A/I is halogen-free and RoHS-compliant per EU Directive 2011/65/EU and Vishay's material declaration document 99912. It also satisfies JESD201 Class 2 whisker resistance and UL 94 V-0 flammability standards.
1.5SMC47CAHM3_A/I 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/I FAQ
1.How can I place an order for 1.5SMC47CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC47CAHM3_A/I 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/I reliable?
The price and inventory of 1.5SMC47CAHM3_A/I 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/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC47CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC47CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC47CAHM3_A/I?
1.5SMC47CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC47CAHM3_A/I 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/I?
For technical support, including 1.5SMC47CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC47CAHM3_A/I requirements.
6.How does Aetrix verify that 1.5SMC47CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC47CAHM3_A/I 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/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC47CAHM3_A/I?
All 1.5SMC47CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC47CAHM3_A/I, 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/I part is unused and in its original packaging.
Return procedure for 1.5SMC47CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC47CAHM3_A/I Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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