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Vishay General Semiconductor - Diodes Division 1.5SMC6.8CAHM3_A/I
- Part No.:
- 1.5SMC6.8CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC6.8CAHM3_A/I.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,977
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Product details
Overview
1.5SMC6.8CAHM3_A/I 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 6.8 V breakdown voltage (VBR), 1500 W peak pulse power (10/1000 µs), 10.5 V clamping voltage at 143 A peak pulse current, and SMC (DO-214AB) surface-mount package - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC6.8CAHM3_A/I datasheet, 1.5SMC6.8CAHM3_A/I pinout, 1.5SMC6.8CAHM3_A/I application, or 1.5SMC6.8CAHM3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.54), MSL Level 1 moisture sensitivity, and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ at 5.8 V), but triggers into low-impedance conduction when transient voltage exceeds its 6.8 V nominal breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and fast response (<1 ns).
Designed for repetitive surge handling with 0.01% duty cycle, it delivers 143 A peak pulse current (IPPM) at 10.5 V clamping while maintaining thermal stability via RθJA = 75 °C/W and TJ(max) = +150 °C - enabling use on standard 8 mm × 8 mm copper pads without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V - defines precise voltage threshold where avalanche conduction begins; ±5% tolerance enables reliable trip-point design. |
| VWM | 5.8 V - maximum continuous reverse operating voltage; ensures no leakage-induced stress on protected circuitry. |
| VC @ IPPM | 10.5 V at 143 A - clamping voltage during 1500 W transient; limits downstream voltage stress to safe levels for 5 V/3.3 V ICs. |
| PPPM | 1500 W - peak pulse power rating with 10/1000 µs waveform; supports lightning surge (IEC 61000-4-5 Level 4) and inductive switching events. |
| IPPM | 143 A - peak pulse current capacity; determines survivability against high-energy transients without degradation. |
| TJ(max) | +150 °C - maximum junction temperature; allows operation in under-hood automotive environments and industrial enclosures. |
| Package | SMC (DO-214AB) - standardized surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place. |
Pinout & Package
SMC (DO-214AB) package: molded epoxy case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C reflow peak), and JESD201 Class 2 whisker resistance. Bidirectional configuration has no polarity marking; both terminals are electrically symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative surge) | Conducts during negative-going transients; forms symmetrical clamping path with cathode. |
| Cathode | Transient current entry (positive surge) | Conducts during positive-going transients; enables bidirectional protection without external circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines, differential buses (e.g., CAN, RS-485), and ungrounded sensor outputs without polarity concerns. |
| AEC-Q101 qualified (HM3) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; supports under-hood and ADAS module deployment. |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for EU, China RoHS, and JEITA standards; eliminates brominated flame retardants in molding compound. |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges up to 4 kV/2 Ω (open-circuit voltage) without failure or parameter shift. |
| Low clamping ratio (VC/VBR ≈ 1.54) | Minimizes voltage overshoot during clamping - critical for protecting 5 V logic rails and automotive microcontrollers with tight VDD margins. |
Applications
| Automotive Sensor Interface | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting LIN bus nodes and analog sensor inputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt TVS placed between signal line and ground to clamp transients before reaching MCU ADC or LIN transceiver. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V automotive MCUs by limiting voltage to ≤10.5 V during 100 A surge events. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and EFT bursts. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input channels, positioned upstream of optocoupler or Schmitt trigger input stage. Use Value: Maintains functional safety integrity by ensuring input logic remains valid during 1 kV/50 Ω EFT (IEC 61000-4-4) events without reset or corruption. |
| Telecom Line Card Surge Protection | Consumer Power Adapter EMI Filtering |
Use Scenario: Secondary-level protection on Ethernet PHY power rails and PoE injectors subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Fast-response shunt element across +12 V bias rail feeding Gigabit Ethernet magnetics. Use Value: Limits induced surge energy to <100 mJ per event, preserving PHY IC lifetime and avoiding thermal runaway in DC-DC converters. |
Use Scenario: Input-stage transient suppression in USB-C PD adapters and wireless charger control boards. IC Role / Device Role / Timing Role: Clamping device across primary-side bulk capacitor to absorb MOSFET switching spikes and ESD events. Use Value: Reduces conducted EMI by >15 dB above 30 MHz while meeting UL 1449 Type 4 component requirements for end-product certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8CA | Lower PPPM (600 W), same VBR/VC, SMB package (smaller footprint, higher RθJA = 90 °C/W) | Limited to lower-energy transients (e.g., ESD-only); unsuitable for IEC 61000-4-5 Level 3+ or automotive load dump. | Select when board space is constrained and surge threat level is limited to human-body-model ESD or low-duty-cycle switching noise. |
| 1.5KE6.8CA | Same electrical specs, but axial-leaded DO-15 package; higher mounting thermal resistance and manual assembly requirement. | Not suitable for automated SMT production; incompatible with high-density PCB layouts or vibration-prone environments. | Choose only for legacy through-hole designs or prototyping where reflow compatibility and board-level reliability are secondary concerns. |
Compared with SMBJ6.8CA and 1.5KE6.8CA, the 1.5SMC6.8CAHM3_A/I delivers superior surge handling (1500 W vs. 600 W/1500 W axial), AEC-Q101 qualification for automotive use, and SMC package compatibility with high-volume SMT lines - making it the optimal choice for production-grade automotive and industrial systems requiring certified reliability and automated manufacturability.
Availability
1.5SMC6.8CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line cards, and consumer power adapter designs requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant surge protection.
Supply support for 1.5SMC6.8CAHM3_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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The 1.5SMC Series was engineered specifically for high-power, surface-mount transient suppression in harsh environments - emphasizing AEC-Q101 qualification, low clamping ratios, and robust thermal performance in compact SMC packages.
FAQ
What is the breakdown voltage tolerance for 1.5SMC6.8CAHM3_A/I?
The 1.5SMC6.8CAHM3_A/I has a specified breakdown voltage range of 6.45 V to 7.14 V at 10 mA test current, representing a ±5% tolerance around the nominal 6.8 V rating. This tight tolerance ensures predictable clamping behavior in precision protection circuits and aligns with AEC-Q101 requirements for automotive-grade consistency.
Is 1.5SMC6.8CAHM3_A/I suitable for automotive applications?
Yes, 1.5SMC6.8CAHM3_A/I is AEC-Q101 qualified (denoted by the HM3 suffix) and explicitly rated for automotive use, including under-hood environments. It undergoes rigorous stress testing for temperature cycling, high-temperature reverse bias, and ESD, making it appropriate for engine control units, ADAS sensors, and body electronics protected by the 1.5SMC6.8CAHM3_A/I.
What does the "CA" suffix indicate in 1.5SMC6.8CAHM3_A/I?
The "CA" suffix in 1.5SMC6.8CAHM3_A/I denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., 1.5SMC6.8AHM3_A/I), the CA version has no polarity marking and functions identically in either orientation.
How does the clamping voltage of 1.5SMC6.8CAHM3_A/I compare to its breakdown voltage?
The 1.5SMC6.8CAHM3_A/I clamps at 10.5 V under 143 A peak pulse current, yielding a clamping ratio (VC/VBR) of approximately 1.54. This low ratio ensures minimal overvoltage stress on downstream 5 V or 3.3 V ICs during surge events - a critical advantage over higher-ratio TVS devices that may exceed safe rail margins.
What packaging and moisture sensitivity level applies to 1.5SMC6.8CAHM3_A/I?
The 1.5SMC6.8CAHM3_A/I is supplied in 13-inch tape-and-reel format (I suffix) and conforms to MSL Level 1 per J-STD-020, allowing unlimited floor life and standard 260 °C lead-free reflow without baking. Its SMC (DO-214AB) package uses halogen-free, UL 94 V-0 compliant molding compound and matte tin-plated leads.
1.5SMC6.8CAHM3_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):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 143A
- 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)
1.5SMC6.8CAHM3_A/I FAQ
1.How can I place an order for 1.5SMC6.8CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC6.8CAHM3_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 1.5SMC6.8CAHM3_A/I reliable?
The price and inventory of 1.5SMC6.8CAHM3_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 1.5SMC6.8CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC6.8CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC6.8CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC6.8CAHM3_A/I?
1.5SMC6.8CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC6.8CAHM3_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 1.5SMC6.8CAHM3_A/I?
For technical support, including 1.5SMC6.8CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC6.8CAHM3_A/I requirements.
6.How does Aetrix verify that 1.5SMC6.8CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC6.8CAHM3_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 1.5SMC6.8CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC6.8CAHM3_A/I?
All 1.5SMC6.8CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC6.8CAHM3_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 1.5SMC6.8CAHM3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC6.8CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC6.8CAHM3_A/I Tags
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