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Vishay General Semiconductor - Diodes Division 1.5SMC6.8AHM3_A/I
- Part No.:
- 1.5SMC6.8AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC6.8AHM3_A/I.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,553
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Product details
Overview
1.5SMC6.8AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, designed for high-energy surge protection. It features a 6.8 V breakdown voltage (VBR), 5.8 V stand-off voltage (VWM), 1500 W peak pulse power (10/1000 μs), 143 A peak pulse current (IPPM), and clamps to 10.5 V at rated surge - deployed on power rails and signal lines of automotive ECUs and industrial sensor interfaces.
For engineers reviewing the 1.5SMC6.8AHM3_A/I datasheet, 1.5SMC6.8AHM3_A/I pinout, 1.5SMC6.8AHM3_A/I application, or 1.5SMC6.8AHM3_A/I equivalent, this part delivers AEC-Q101 qualified transient suppression with halogen-free RoHS compliance, MSL Level 1 moisture sensitivity, and verified clamping performance under repetitive 0.01% duty-cycle surges.
Technical Context
This TVS diode operates as a unidirectional clamping device with a glass-passivated junction and low incremental surge resistance, enabling fast response (<1 ns) to ESD and lightning-induced transients. Its thermal resistance (RθJA = 75 °C/W) and junction temperature limit (TJ = 150 °C) support reliable operation on standard 8.0 mm × 8.0 mm copper pads without forced cooling.
The 1.5SMC6.8AHM3_A/I is rated for 200 A non-repetitive forward surge (8.3 ms half-sine) and exhibits a low 0.057 %/°C temperature coefficient of VBR, ensuring stable breakdown across automotive (-40 °C to +125 °C ambient) and industrial operating ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA test current - defines precise voltage threshold where clamping begins |
| VWM | 5.80 V - maximum continuous reverse voltage before leakage exceeds 1000 μA |
| IPPM | 143 A with 10/1000 μs waveform - peak surge current it safely shunts without failure |
| VC | 10.5 V at IPPM - clamped voltage seen by protected circuit during full-rated surge |
| PPPM | 1500 W - peak transient power dissipation capability under standardized surge profile |
| TJ max | 150 °C - maximum junction temperature supporting operation in under-hood automotive environments |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
Pinout & Package
Package: SMC (DO-214AB), molded case with matte tin-plated leads, compliant with J-STD-002 and JESD 22-B102 solderability standards. Polarity marked by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or low-side reference | Provides return path for surge current during clamping; must be routed to low-impedance ground plane |
| Cathode | Current exit terminal in forward bias; connected to protected line | Connected directly to the line being protected (e.g., 5 V rail or CAN_H); band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HAST, and mechanical shock per AEC specification |
| Halogen-free & RoHS-compliant | Meets IEC 61249-2-21 and JEDEC JS709C requirements - supports green manufacturing and end-of-life compliance |
| MSL Level 1 | Unlimited floor life at ≤30 °C/85% RH - no bake required prior to reflow assembly |
| 1500 W peak pulse rating | Withstands ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 Level 4 surges when properly mounted |
| Low clamping ratio (VC/VBR ≈ 1.55) | Minimizes overvoltage stress on downstream ICs - critical for protecting 3.3 V and 5 V logic interfaces |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs against load dump transients up to 35 V and 100 ms duration. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND, clamping surges before they reach LDO input. Use Value: Limits voltage to ≤10.5 V during 143 A surge, preventing damage to 16 V-rated input stages of automotive MCUs. |
Use Scenario: Safeguarding analog outputs of pressure sensors exposed to inductive switching noise in factory automation PLC modules. IC Role / Device Role / Timing Role: TVS installed at sensor PCB edge, shunting fast-rising transients induced by nearby solenoid drivers. Use Value: Sub-1 ns response ensures clamping occurs before 10.5 V reaches 12-bit ADC front-end, preserving measurement integrity. |
| Telecom DC Power Input Protection | Consumer USB Port ESD Suppression |
Use Scenario: Guarding 48 V PoE-powered network switch ports against lightning-induced common-mode surges on data lines and supply rails. IC Role / Device Role / Timing Role: Paired with bidirectional TVS on data lines; 1.5SMC6.8AHM3_A/I protects auxiliary 5 V control rail. Use Value: 1500 W rating handles multiple repetitions of IEC 61000-4-5 Comb Wave (1.2/50 μs + 8/20 μs) without degradation. |
Use Scenario: Secondary-level surge protection on VBUS line of USB-C host ports in smart home hubs, supplementing primary ESD arrays. IC Role / Device Role / Timing Role: Standoff voltage (5.8 V) allows normal 5 V operation while clamping >6.8 V transients to 10.5 V. Use Value: Low VC prevents latch-up in USB PD controllers during contact discharge events per IEC 61000-4-2 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8AHE3_A/H | Smaller SMB (DO-214AA) package; 600 W PPPM; same VBR (6.45–7.14 V) and VC (10.5 V) | Limited to lower-energy surges (e.g., IEC 61000-4-2 ESD only); not rated for ISO 7637-2 load dump | Select when board space is constrained and surge energy does not exceed 600 W - verify thermal derating on small pads. |
| 1.5KE6.8A | Through-hole DO-201 package; identical electrical specs but higher RθJA (≈100 °C/W); no AEC-Q101 qualification | Suitable for prototyping or legacy through-hole designs; lacks automotive qualification and MSL Level 1 handling | Choose only for non-automotive, non-volume SMT applications where rework flexibility outweighs performance and compliance needs. |
Compared with SMBJ6.8AHE3_A/H and 1.5KE6.8A, the 1.5SMC6.8AHM3_A/I uniquely combines AEC-Q101 qualification, 1500 W surge capacity, halogen-free construction, and SMC package scalability - making it the preferred choice for production automotive and industrial SMT designs requiring robust, compliant transient protection.
Availability
1.5SMC6.8AHM3_A/I is available at Aetrix Electronics and suitable for automotive ECU power rail protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for 1.5SMC6.8AHM3_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 was engineered for high-power, surface-mount transient suppression in automotive, industrial, and telecom systems - delivering consistent clamping performance and AEC-Q101 validation across voltage grades from 6.8 V to 540 V.
FAQ
What is the breakdown voltage tolerance of the 1.5SMC6.8AHM3_A/I?
The 1.5SMC6.8AHM3_A/I has a specified breakdown voltage (VBR) range of 6.45 V to 7.14 V at 10 mA test current, representing ±5% tolerance around the nominal 6.8 V rating. This tight tolerance ensures predictable clamping onset across production lots and temperature extremes, critical for protecting 5 V logic rails where overvoltage margin is narrow.
Is the 1.5SMC6.8AHM3_A/I suitable for automotive applications?
Yes, the 1.5SMC6.8AHM3_A/I is AEC-Q101 qualified and carries the HM3 suffix denoting halogen-free, RoHS-compliant, and automotive-grade construction. It meets requirements for under-hood and body-control module use, including thermal cycling, humidity testing, and surge endurance per ISO 7637-2 and IEC 61000-4-5 standards - confirmed in Vishay's qualification report for the 1.5SMC series.
What is the maximum clamping voltage of the 1.5SMC6.8AHM3_A/I at its rated surge current?
The 1.5SMC6.8AHM3_A/I clamps to a maximum of 10.5 V at its rated peak pulse current (IPPM) of 143 A under the 10/1000 μs waveform. This clamping voltage is measured with the device mounted on 8.0 mm × 8.0 mm copper pads per JEDEC standards, and represents the worst-case overvoltage imposed on the protected circuit during full-rated transient events.
Does the 1.5SMC6.8AHM3_A/I have a bidirectional variant?
No - the 1.5SMC6.8AHM3_A/I is strictly unidirectional, indicated by the "A" suffix and cathode band marking. For bidirectional operation at the same voltage grade, Vishay offers the 1.5SMC6.8CAHM3_A/I (with "CA" suffix), which provides symmetrical clamping in both polarities and is used in AC-coupled or differential signal line protection.
What is the moisture sensitivity level (MSL) rating for the 1.5SMC6.8AHM3_A/I?
The 1.5SMC6.8AHM3_A/I is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life at conditions ≤30 °C and ≤85% relative humidity. No baking or dry-pack handling is required prior to reflow soldering, simplifying SMT assembly and reducing process risk in high-volume automotive and industrial manufacturing.
1.5SMC6.8AHM3_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:
- 1
- Bidirectional Channels:
- -
- 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)
1.5SMC6.8AHM3_A/I FAQ
1.How can I place an order for 1.5SMC6.8AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC6.8AHM3_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 1.5SMC6.8AHM3_A/I reliable?
The price and inventory of 1.5SMC6.8AHM3_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 1.5SMC6.8AHM3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC6.8AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC6.8AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC6.8AHM3_A/I?
1.5SMC6.8AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC6.8AHM3_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 1.5SMC6.8AHM3_A/I?
For technical support, including 1.5SMC6.8AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC6.8AHM3_A/I requirements.
6.How does Aetrix verify that 1.5SMC6.8AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC6.8AHM3_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 1.5SMC6.8AHM3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC6.8AHM3_A/I?
All 1.5SMC6.8AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC6.8AHM3_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 1.5SMC6.8AHM3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC6.8AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC6.8AHM3_A/I Tags
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