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Vishay General Semiconductor - Diodes Division 1.5SMC75CAHM3_A/I
- Part No.:
- 1.5SMC75CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC75CAHM3_A/I.pdf
- Description:
- TVS DIODE 64.1VWM 104VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,990
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Product details
Overview
1.5SMC75CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 1500 W peak pulse power (10/1000 μs), 75 V standoff voltage (VWM), and 104 V clamping voltage (VC) at 14.6 A peak pulse current. It protects sensitive ICs and MOSFETs in automotive sensor signal lines, industrial I/O interfaces, and telecom power rails.
For engineers reviewing the 1.5SMC75CAHM3_A/I datasheet, 1.5SMC75CAHM3_A/I pinout, 1.5SMC75CAHM3_A/I application, or 1.5SMC75CAHM3_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 standard PCB pads.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ leakage at 64.1 V), but triggers into low-impedance conduction when transient voltage exceeds its breakdown threshold (71.3–78.8 V at 1 mA). Its glass-passivated junction ensures stable avalanche characteristics and fast response time (<1 ns).
The 1.5SMC75CAHM3_A/I is rated for repetitive 10/1000 μs surges at 0.01% duty cycle, with thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-leads), enabling reliable operation up to 150 °C junction temperature when mounted on 8.0 mm × 8.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 64.1 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown) | 71.3–78.8 V at 1 mA - Verified avalanche onset range; ensures predictable triggering across production lot and temperature. |
| VC (Clamping) | 104 V at IPPM = 14.6 A - Peak voltage seen by protected circuit during full-rated surge; determines downstream component stress. |
| PPPM | 1500 W (10/1000 μs) - Energy-handling capacity for lightning/inductive-switching transients; enables single-device protection without cascading stages. |
| TJ max. | +150 °C - Maximum junction temperature rating; supports operation in under-hood automotive and industrial environments. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 7.75 mm × 6.22 mm footprint; compatible with IPC-7351B land patterns. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD testing per AEC specification. |
| RoHS & Halogen-Free | Compliant (HM3 suffix) - Meets JEDEC J-STD-609A Class 1 moisture sensitivity and JESD201 Class 2 whisker resistance. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H); cathode band absent per bidirectional design.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive half-cycle) | Conducts surge current toward ground when voltage exceeds VBR in positive direction; symmetric with cathode. |
| Cathode | Transient current entry (negative half-cycle) | Conducts surge current toward ground when voltage exceeds VBR in negative direction; identical electrical behavior to anode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Equal VBR and VC performance in both polarities - eliminates need for dual unidirectional devices in AC-coupled or floating signal paths. |
| 1500 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation - suitable for front-end protection in harsh EMC environments. |
| Low clamping ratio (VC/VBR ≈ 1.36) | Minimizes overvoltage stress on downstream components - critical for protecting 75 V-rated gate drivers and analog front-ends. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles - supports high-yield automated assembly without pre-baking. |
| AEC-Q101 qualified (HM3) | Validated for automotive applications including engine control modules and ADAS sensor interfaces - meets lifetime reliability requirements. |
Applications
| Automotive Sensor Signal Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and Hall-effect sensor outputs from load-dump and ISO 7637-2 pulses in vehicle chassis modules. IC Role / Device Role / Timing Role: Shunt TVS placed directly at connector interface to clamp transients before reaching signal conditioning ICs. Use Value: Prevents latch-up or permanent damage to 5 V/12 V sensor interface ICs during 100 V/1000 ms load-dump events. |
Use Scenario: Safeguarding 4–20 mA current-loop inputs in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Bidirectional clamping element across input terminals to suppress ±1 kV EFT bursts per IEC 61000-4-4. Use Value: Maintains signal integrity and avoids false triggering during factory-floor EMI events without adding series impedance. |
| Telecom Power Rail Protection | Consumer USB Port ESD/Surge Protection |
Use Scenario: Guarding 48 V PoE-powered Ethernet switch ports against lightning-induced common-mode surges on data pairs. IC Role / Device Role / Timing Role: Paired bidirectional TVS on differential pair with common-mode choke to divert surge energy to chassis ground. Use Value: Enables compliance with GR-1089-CORE Level 3 (10/1000 μs, 100 A) without derating or parallel devices. |
Use Scenario: Protecting USB 2.0 D+/D− lines in smart home hubs against human-body-model ESD (±15 kV) and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical) bidirectional TVS placed adjacent to connector to minimize signal distortion. Use Value: Passes USB-IF compliance testing while maintaining <1% signal rise-time degradation at 480 Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA | Lower PPPM (600 W), same VWM/VC, SMB package (smaller footprint, higher RθJA = 100 °C/W) | Limited to lower-energy transients (IEC 61000-4-5 Level 2); unsuitable for automotive load-dump where 1500 W is required | Select when board space is constrained and surge threat level is ≤600 W; verify thermal margin at 150 °C ambient. |
| 1.5KE75CA | Through-hole TO-204AA (DO-41), same electrical specs, higher IFSM (200 A), no AEC-Q101 qualification | Not suitable for automated SMT lines; lacks automotive qualification and MSL-1 reflow compatibility | Choose only for legacy through-hole designs or prototyping where reflow compatibility and automotive validation are not required. |
Compared with SMBJ75CA and 1.5KE75CA, the 1.5SMC75CAHM3_A/I uniquely delivers 1500 W surge handling in an AEC-Q101-qualified, halogen-free SMC package-enabling automotive-grade robustness without sacrificing SMT manufacturability or thermal performance.
Availability
1.5SMC75CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, and telecom PoE port protection requiring stable component supply, long-term lifecycle support, and traceable halogen-free sourcing.
Supply support for 1.5SMC75CAHM3_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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series was developed for high-power, surface-mount transient suppression in automotive, industrial, and telecom systems-prioritizing AEC-Q101 qualification, low clamping ratio, and automated assembly compatibility.
FAQ
What is the clamping voltage of the 1.5SMC75CAHM3_A/I at its rated peak pulse current?
The 1.5SMC75CAHM3_A/I has a maximum clamping voltage (VC) of 104 V at its rated peak pulse current (IPPM) of 14.6 A, measured under the standard 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and represents the highest voltage the protected circuit will experience during a full-rated surge event. The 1.5SMC75CAHM3_A/I maintains this clamping performance bidirectionally, making it suitable for AC-coupled or floating signal paths where polarity reversal is possible.
Is the 1.5SMC75CAHM3_A/I qualified for automotive applications?
Yes, the 1.5SMC75CAHM3_A/I is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's 1.5SMC series datasheet (Document Number 88303). It has undergone stress testing including high-temperature operating life (HTOL), temperature cycling (TC), unbiased highly accelerated stress test (UHAST), and ESD per JS-001. This qualification validates its use in automotive subsystems such as body control modules, ADAS sensor interfaces, and infotainment power supplies where reliability under extended temperature and vibration is mandatory. The 1.5SMC75CAHM3_A/I is explicitly designated for automotive ordering.
What does the "HM3" suffix indicate in 1.5SMC75CAHM3_A/I?
The "HM3" suffix in 1.5SMC75CAHM3_A/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Specifically, "H" indicates halogen-free molding compound, "M3" confirms RoHS compliance and JESD201 Class 2 whisker resistance, and the "_A/I" denotes packaging in 13-inch tape-and-reel (I) with revision A. This distinguishes it from commercial-grade variants (e.g., M3 without AEC-Q101) and ensures compliance with automotive material restrictions and reliability standards. The 1.5SMC75CAHM3_A/I meets UL 94 V-0 flammability and LF peak reflow of 260 °C (MSL Level 1).
How does the 1.5SMC75CAHM3_A/I differ from unidirectional versions like 1.5SMC75AHM3_A/I?
The 1.5SMC75CAHM3_A/I is bidirectional, meaning it provides symmetrical clamping for both positive and negative transients, with identical VBR (71.3–78.8 V), VC (104 V), and IPPM (14.6 A) in either polarity. In contrast, the unidirectional 1.5SMC75AHM3_A/I has a cathode band marking and conducts only in reverse bias - it cannot suppress positive-going surges on its anode. This makes the 1.5SMC75CAHM3_A/I ideal for AC signal lines, differential buses (e.g., RS-485), or floating grounds where voltage polarity is undefined, whereas the unidirectional version suits DC power rail protection where polarity is fixed.
What is the thermal resistance of the 1.5SMC75CAHM3_A/I, and how does it affect layout?
The 1.5SMC75CAHM3_A/I 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 8.0 mm × 8.0 mm copper pads per terminal. To achieve rated power dissipation, PCB layout must provide adequate copper area: minimum pad dimensions are specified as 0.31″ × 0.31″ (8.0 mm × 8.0 mm) per terminal, with internal thermal vias recommended for high-reliability applications. Exceeding TJ max. of +150 °C due to insufficient copper will degrade clamping consistency and accelerate wear-out. The 1.5SMC75CAHM3_A/I's low RθJL enables effective heat transfer to PCB traces even without large thermal planes.
1.5SMC75CAHM3_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):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 104V
- Current - Peak Pulse (10/1000µs):
- 14.6A
- 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)
1.5SMC75CAHM3_A/I FAQ
1.How can I place an order for 1.5SMC75CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC75CAHM3_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 1.5SMC75CAHM3_A/I reliable?
The price and inventory of 1.5SMC75CAHM3_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 1.5SMC75CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC75CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC75CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC75CAHM3_A/I?
1.5SMC75CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC75CAHM3_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 1.5SMC75CAHM3_A/I?
For technical support, including 1.5SMC75CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC75CAHM3_A/I requirements.
6.How does Aetrix verify that 1.5SMC75CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC75CAHM3_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 1.5SMC75CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC75CAHM3_A/I?
All 1.5SMC75CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC75CAHM3_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 1.5SMC75CAHM3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC75CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC75CAHM3_A/I Tags
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