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Vishay General Semiconductor - Diodes Division 1.5SMC6.8AHM3_A/H
- Part No.:
- 1.5SMC6.8AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC6.8AHM3_A/H.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,837
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Product details
Overview
1.5SMC6.8AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 6.8 V breakdown voltage (VBR = 6.45–7.14 V at IT = 10 mA), 5.8 V stand-off voltage (VWM), clamps transients to ≤10.5 V at 143 A peak pulse current (IPPM), and delivers 1500 W peak pulse power with a 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial systems.
For engineers reviewing the 1.5SMC6.8AHM3_A/H datasheet, 1.5SMC6.8AHM3_A/H pinout, 1.5SMC6.8AHM3_A/H application, or 1.5SMC6.8AHM3_A/H equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS-compliant HM3 suffix, SMC (DO-214AB) package thermal performance (RθJA = 75 °C/W), and unidirectional polarity with cathode band marking.
Technical Context
This TVS diode operates as a clamping device that enters avalanche conduction when reverse voltage exceeds VBR, limiting transient overvoltage to ≤10.5 V at rated IPPM. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance, enabling fast response (<1 ns) to ESD and lightning-induced surges.
The 1.5SMC6.8AHM3_A/H is rated for -65 °C to +150 °C operating junction temperature, supports 200 A non-repetitive forward surge current (IFSM), and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow compatibility - confirming suitability for automated SMT assembly in high-reliability automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA - defines precise avalanche initiation threshold for repeatable clamping behavior |
| VWM | 5.8 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | ≤10.5 V at 143 A - clamped voltage during 1500 W transient, directly limiting stress on downstream ICs |
| IPPM | 143 A (10/1000 µs) - peak surge current handling capacity under standardized lightning surge test condition |
| PPPM | 1500 W - peak pulse power rating determining survivability against IEC 61000-4-5 Level 4 surges |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, critical for derating power dissipation above 25 °C |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to circuit ground or lower-potential rail; defines directionality of clamping action |
| Cathode | Avalanche conduction terminal / Surge current sink | Connected to protected line (e.g., 12 V supply rail); carries full transient current to ground during clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Halogen-free & RoHS-compliant (HM3) | Meets environmental compliance requirements for modern automotive and industrial PCB assemblies |
| 1500 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 surge test Level 4 (4 kV line-to-ground) without degradation |
| Low clamping voltage (VC = 10.5 V) | Provides tighter voltage margin than standard Zener-based protectors, reducing risk of IC latch-up or damage |
| MSL Level 1 moisture sensitivity | Enables direct placement without baking; compatible with standard lead-free reflow profiles up to 260 °C peak |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-supplied ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges exceeding 5.8 V. Use Value: Limits voltage seen by microcontroller power pins to ≤10.5 V during 143 A transients, preventing brownout or permanent damage. | Use Scenario: Safeguarding analog output lines of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: TVS connected across signal and ground to suppress EFT bursts and inductive switching noise. Use Value: Maintains signal integrity below 10.5 V clamping level, avoiding ADC saturation and false readings during 10/1000 µs surges. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeding Line |
Use Scenario: Input-side surge suppression in wall-mounted AC/DC adapters for smart home devices. IC Role / Device Role / Timing Role: Primary TVS on secondary-side DC output (5–12 V) to absorb coupling from primary-side transients. Use Value: Enables compliance with UL 62368-1 surge immunity requirements using single-device solution with 1500 W rating. | Use Scenario: Overvoltage protection on -48 V DC feeding lines for remote radio units in 5G base stations. IC Role / Device Role / Timing Role: Unidirectional TVS referenced to system ground, absorbing positive-going surges induced by cable coupling. Use Value: Clamps transients to ≤10.5 V while maintaining <1 µA leakage at 5.8 V, preserving low-power standby operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8A-M3/57T | Same VBR range (6.45–7.14 V), but SMB package (DO-214AA); lower PPPM = 600 W | Lower surge energy handling; suitable only for IEC 61000-4-2 ESD or light-duty EFT | Select when board space is constrained and surge threat level is moderate (e.g., consumer USB ports) |
| 1.5KE6.8A | Through-hole DO-201 package; identical electrical specs but no AEC-Q101 or halogen-free certification | Lacks automotive qualification and lead-free reflow compatibility; not suitable for SMT production | Choose only for legacy through-hole designs or prototyping where qualification is not required |
Compared with SMBJ6.8A-M3/57T and 1.5KE6.8A, the 1.5SMC6.8AHM3_A/H uniquely combines AEC-Q101 qualification, 1500 W surge capability in SMC footprint, and halogen-free compliance - making it the only option qualified for volume automotive SMT production requiring full IEC 61000-4-5 Level 4 immunity.
Availability
1.5SMC6.8AHM3_A/H is available at Aetrix Electronics and suitable for automotive control units, industrial sensor nodes, telecom power feeds, and consumer power adapter designs requiring stable component supply with guaranteed long-term continuity.
Supply support for 1.5SMC6.8AHM3_A/H 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 harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, robust surge handling, and SMT manufacturability are mandatory.
FAQ
What is the breakdown voltage tolerance of the 1.5SMC6.8AHM3_A/H?
The 1.5SMC6.8AHM3_A/H 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 consistent clamping behavior across production lots and supports reliable design margining in safety-critical automotive circuits where overvoltage thresholds must be precisely controlled.
Is the 1.5SMC6.8AHM3_A/H suitable for bidirectional surge protection?
No, the 1.5SMC6.8AHM3_A/H is a unidirectional TVS diode, as confirmed by its part number suffix "A" and explicit designation in Vishay's ordering table. Bidirectional variants use the "CA" suffix (e.g., 1.5SMC6.8CA). Using this part for bidirectional protection would result in forward conduction during negative transients, potentially damaging the device or failing to suppress surges - always verify polarity marking (cathode band) during layout.
Does the 1.5SMC6.8AHM3_A/H meet AEC-Q101 requirements?
Yes, the 1.5SMC6.8AHM3_A/H is explicitly AEC-Q101 qualified, as indicated by the "HM3" suffix and confirmed in Vishay document 88303 footnote (1): "_A is available for 1.5SMC6.8(C)A to 1.5SMC220(C)A, AEC-Q101 qualified". This qualification covers stress tests including HTGB, H3TRB, TCT, and ESD, validating its use in automotive powertrain and body electronics.
What is the maximum clamping voltage of the 1.5SMC6.8AHM3_A/H under surge conditions?
The maximum clamping voltage (VC) of the 1.5SMC6.8AHM3_A/H is 10.5 V at 143 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per standard test conditions and represents the upper limit of voltage imposed on protected circuitry during worst-case surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
How does the HM3 suffix affect the 1.5SMC6.8AHM3_A/H's compliance status?
The HM3 suffix on the 1.5SMC6.8AHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Per Vishay documentation, "Base P/NHM3_X – halogen-free, RoHS-compliant, and AEC-Q101 qualified", confirming full regulatory alignment for automotive and industrial markets requiring strict material declarations and reliability validation.
1.5SMC6.8AHM3_A/H 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/H FAQ
1.How can I place an order for 1.5SMC6.8AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC6.8AHM3_A/H 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/H reliable?
The price and inventory of 1.5SMC6.8AHM3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC6.8AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC6.8AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC6.8AHM3_A/H?
1.5SMC6.8AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC6.8AHM3_A/H 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/H?
For technical support, including 1.5SMC6.8AHM3_A/H 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/H requirements.
6.How does Aetrix verify that 1.5SMC6.8AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC6.8AHM3_A/H 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/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC6.8AHM3_A/H?
All 1.5SMC6.8AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC6.8AHM3_A/H, 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/H part is unused and in its original packaging.
Return procedure for 1.5SMC6.8AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC6.8AHM3_A/H Tags
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