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Vishay General Semiconductor - Diodes Division 1.5SMC7.5CAHM3/I
- Part No.:
- 1.5SMC7.5CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC7.5CAHM3/I.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,381
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Product details
Overview
1.5SMC7.5CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on signal or power lines. It features 7.5 V standoff voltage (VWM), 8.33 V minimum breakdown voltage (VBR), 1500 W peak pulse power (10/1000 μs), and 11.3 V maximum clamping voltage at 133 A IPPM - used in automotive sensor protection, industrial I/O interfaces, and telecom line surge suppression.
For engineers reviewing the 1.5SMC7.5CAHM3/I datasheet, 1.5SMC7.5CAHM3/I pinout, 1.5SMC7.5CAHM3/I application, or 1.5SMC7.5CAHM3/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), junction temperature range (–65 to +150 °C), and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker test.
Technical Context
The 1.5SMC7.5CAHM3/I operates as a bidirectional avalanche diode with symmetrical clamping in both polarities, enabling robust protection against ESD, lightning-induced surges, and inductive switching transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<500 μA at VWM).
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads, it delivers 1500 W peak pulse power under standardized 10/1000 μs waveform with 0.01% duty cycle, and supports repetitive surge events when thermally managed via its RθJL = 15 °C/W junction-to-lead thermal path.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 6.40 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 7.13–7.88 V at 10 mA - Verified avalanche onset range; ensures predictable turn-on during transient overvoltage. |
| VC (Clamping Voltage) | 11.3 V at 133 A IPPM - Peak voltage seen by protected circuit during worst-case 10/1000 μs surge; critical for IC-level survivability. |
| PPPM (Peak Pulse Power) | 1500 W - Sustained energy absorption capability under standard surge waveform; enables single-device protection for moderate-energy threats. |
| ID (Reverse Leakage) | ≤500 μA at 6.40 V - Low standby current minimizes power loss and avoids false triggering in high-impedance circuits. |
| TJ max. | +150 °C - Maximum junction temperature rating; supports operation in under-hood automotive and industrial environments. |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient; informs PCB copper pad design (0.31" × 0.31") for reliable derating above 25 °C. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified (HM3 suffix), matte tin-plated leads solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node in bidirectional configuration | No polarity marking; symmetrical terminals enable mounting without orientation check - simplifies automated placement. |
| Cathode | Current exit terminal in forward bias; common node in bidirectional configuration | Identical physical terminal to Anode; bidirectional operation eliminates need for cathode band marking. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., RS-485, CAN bus, Ethernet PHY) without polarity constraints. |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules, ADAS sensors, and infotainment interfaces per stress-test requirements. |
| 1500 W peak pulse power | Handles IEC 61000-4-5 Level 4 (4 kV surge) on 2 Ω source impedance with margin when mounted per recommended pad layout. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD > 30 kV/μs), improving protection fidelity for sensitive analog front-ends. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking; reduces manufacturing complexity and cost. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting LIN/CAN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed at connector interface to shunt surge energy before reaching MCU or signal conditioner. Use Value: Maintains 6.40 V standoff while clamping to ≤11.3 V at 133 A, preserving signal integrity and preventing latch-up in 5 V/3.3 V automotive microcontrollers. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers against field-wiring induced surges and ground bounce. IC Role / Device Role / Timing Role: Primary overvoltage clamp on dry-contact or optocoupler input stage, rated for repetitive 10/1000 μs surges per IEC 61000-4-4. Use Value: Withstands ≥1000 surges at 80% PPPM rating due to low thermal resistance (RθJL = 15 °C/W), ensuring long-term reliability in factory automation systems. |
| Telecom Line Interface | Consumer USB Port ESD Protection |
Use Scenario: Shielding RS-485 transceivers and PoE-powered Ethernet PHYs from lightning-induced longitudinal surges on outdoor cabling. IC Role / Device Role / Timing Role: First-line bidirectional suppressor on differential pair, coordinated with common-mode chokes and secondary TVS arrays. Use Value: Symmetrical 7.13–7.88 V VBR ensures balanced clamping across A/B lines, minimizing data corruption during 1 kV/μs fast transients. |
Use Scenario: Adding secondary surge immunity to USB 2.0 data lines (D+/D−) in set-top boxes and smart displays exposed to user-handling ESD. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical) bidirectional clamp placed after EMI filter, upstream of USB transceiver ESD diodes. Use Value: Delivers <500 μA leakage at 6.40 V and sub-100 ps response time, preserving signal rise/fall times while meeting IEC 61000-4-2 ±15 kV contact discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5CA | Same VWM (6.4 V) and VC (11.3 V), but lower PPPM (600 W); SMB package (DO-214AA), smaller footprint (3.56 × 4.60 mm vs. 7.11 × 6.22 mm). | Limited to lower-energy threats (IEC 61000-4-5 Level 2); unsuitable for 24 V industrial power rail protection where 1500 W margin is required. | Select SMBJ7.5CA only when board space is constrained and surge threat level is confirmed ≤600 W. |
| 1.5KE7.5CA | Same electrical specs (VWM = 6.4 V, VC = 11.3 V, PPPM = 1500 W), but axial-leaded DO-15 package; no SMT compatibility. | Requires through-hole assembly and manual rework; incompatible with high-volume automated production and vibration-prone environments. | Choose 1.5KE7.5CA only for prototyping, legacy repair, or non-SMT applications where reflow compatibility is not required. |
Compared with SMBJ7.5CA and 1.5KE7.5CA, the 1.5SMC7.5CAHM3/I uniquely combines AEC-Q101 qualification, halogen-free construction, SMC package thermal performance (RθJA = 75 °C/W), and full 1500 W surge handling - making it the only option qualified for automotive-grade SMT production with zero compromise on energy rating.
Availability
1.5SMC7.5CAHM3/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O modules, telecom line interface boards, and consumer USB peripheral protection requiring stable component supply and long-term lifecycle support.
Supply support for 1.5SMC7.5CAHM3/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, automotive qualification, and high-power handling.
The 1.5SMC Series targets high-energy transient suppression in space-constrained SMT applications, with design focus on automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and 1500 W pulse capability are mandatory.
FAQ
What does the 'HM3' suffix indicate in 1.5SMC7.5CAHM3/I?
The HM3 suffix in 1.5SMC7.5CAHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 whisker resistance. It confirms the device meets automotive-grade reliability standards and environmental compliance for use in harsh environments such as engine compartments and industrial control cabinets.
Is 1.5SMC7.5CAHM3/I suitable for protecting CAN FD bus lines?
Yes, 1.5SMC7.5CAHM3/I is suitable for CAN FD bus protection due to its bidirectional clamping, 6.40 V standoff voltage aligned with 5 V CAN FD common-mode range, and 11.3 V clamping voltage that stays below the 12 V absolute maximum rating of most CAN FD transceivers. Its low leakage (<500 μA) prevents signal distortion at data rates up to 5 Mbps.
What is the maximum allowable PCB pad size for optimal thermal performance of 1.5SMC7.5CAHM3/I?
The datasheet specifies optimal thermal performance for 1.5SMC7.5CAHM3/I when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. Reducing pad area increases RθJA beyond 75 °C/W and risks thermal runaway during repetitive surges; increasing pad size beyond this offers diminishing returns unless internal copper planes are also expanded.
Does 1.5SMC7.5CAHM3/I have polarity markings on the package?
No, 1.5SMC7.5CAHM3/I has no polarity markings because it is a bidirectional TVS diode. Both terminals are functionally identical - the device clamps symmetrically in either direction. This eliminates orientation errors during automated placement and simplifies layout for differential or AC-coupled signal paths.
How does the 10/1000 μs waveform rating translate to real-world surge events?
The 1500 W rating of 1.5SMC7.5CAHM3/I under a 10/1000 μs waveform corresponds to standardized surge tests like IEC 61000-4-5 (lightning) and ISO 7637-2 (automotive). At 133 A peak current and 11.3 V clamping, it limits energy delivered to downstream circuitry to ~1.33 J - sufficient to protect 3.3 V/5 V logic interfaces and analog sensors from destructive overvoltage.
1.5SMC7.5CAHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- Current - Peak Pulse (10/1000µs):
- 133A
- 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)
1.5SMC7.5CAHM3/I FAQ
1.How can I place an order for 1.5SMC7.5CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC7.5CAHM3/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 1.5SMC7.5CAHM3/I reliable?
The price and inventory of 1.5SMC7.5CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC7.5CAHM3/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC7.5CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC7.5CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC7.5CAHM3/I?
1.5SMC7.5CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC7.5CAHM3/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 1.5SMC7.5CAHM3/I?
For technical support, including 1.5SMC7.5CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC7.5CAHM3/I requirements.
6.How does Aetrix verify that 1.5SMC7.5CAHM3/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC7.5CAHM3/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 1.5SMC7.5CAHM3/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC7.5CAHM3/I?
All 1.5SMC7.5CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC7.5CAHM3/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 1.5SMC7.5CAHM3/I part is unused and in its original packaging.
Return procedure for 1.5SMC7.5CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC7.5CAHM3/I Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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