My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC6.8CAHM3_A/H
- Part No.:
- 1.5SMC6.8CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC6.8CAHM3_A/H.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,427
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC6.8CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount 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 rated surge current, and SMC (DO-214AB) package - used to safeguard automotive sensor interfaces, industrial I/O ports, and DC power rails against ESD, lightning-induced transients, and inductive switching spikes.
For engineers reviewing the 1.5SMC6.8CAHM3_A/H datasheet, 1.5SMC6.8CAHM3_A/H pinout, 1.5SMC6.8CAHM3_A/H application, or 1.5SMC6.8CAHM3_A/H equivalent, this part delivers AEC-Q101 qualification, halogen-free RoHS compliance, MSL Level 1 moisture sensitivity, and verified clamping performance under repetitive 10/1000 μs surge conditions - critical for automotive-grade reliability validation and high-volume automated assembly.
Technical Context
The 1.5SMC6.8CAHM3_A/H is a bidirectional TVS diode with symmetrical avalanche clamping behavior in both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1000 μA at 5.8 V stand-off), while its low incremental surge resistance supports fast transient suppression with minimal voltage overshoot.
Thermally, it operates across –65 °C to +150 °C junction temperature range and exhibits RθJA = 75 °C/W (typ.) on standard 8.0 mm × 8.0 mm copper pads. The device sustains 143 A peak pulse current (IPPM) at 10/1000 μs waveform and maintains clamping voltage ≤10.5 V - meeting IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and ISO 7637-2 (automotive transients) immunity requirements when properly laid out.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA test current - defines precise avalanche onset window for repeatable clamping threshold |
| VWM | 5.8 V - maximum continuous reverse operating voltage before leakage exceeds 1000 μA; sets safe DC bias margin |
| VC @ IPPM | 10.5 V at 143 A - clamped voltage during 1500 W surge; determines protected circuit's maximum stress level |
| PPPM | 1500 W (10/1000 μs) - peak transient energy handling capacity; enables protection against severe lightning surges |
| IPPM | 143 A - peak surge current capability; validates survivability under ISO 7637-2 Pulse 1/2a/5a waveforms |
| TJ max | +150 °C - maximum junction temperature; supports 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
SMC (DO-214AB) package: molded plastic case with matte tin-plated leads, compliant with J-STD-002 and JESD 22-B102 solderability standards; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative half-cycle) | Conducts during negative voltage excursions; forms symmetrical clamping path with cathode |
| Cathode | Transient current entry (positive half-cycle) | Conducts during positive voltage excursions; paired with anode for full bidirectional protection |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and infotainment power rails |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global automotive and industrial OEM supply chains |
| MSL Level 1 (260 °C peak) | Enables standard reflow soldering without pre-baking; supports high-yield SMT manufacturing |
| 1500 W peak pulse power | Provides robust immunity against IEC 61000-4-5 (lightning) and ISO 7637-2 (automotive load dump) events |
| Low clamping ratio (VC/VBR ≈ 1.5) | Minimizes voltage overshoot during transients - critical for protecting 5 V and 3.3 V logic interfaces |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Ports |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from battery load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across signal/power pair to shunt surge energy before reaching sensitive ASIC inputs. Use Value: Maintains signal integrity during ISO 7637-2 Pulse 5a (75 V/300 ms) events while limiting clamped voltage to ≤10.5 V - preventing latch-up in 5 V interface ICs. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring induced transients and relay coil flyback. IC Role / Device Role / Timing Role: Primary front-end TVS on terminal block inputs, coordinated with series impedance and filtering. Use Value: Absorbs 1500 W surges without degradation, enabling >100,000 surge cycles per IEC 61000-4-5 Level 4 compliance - reducing field failure rates in factory automation. |
| DC Power Rail Protection | Consumer USB/Type-C Port |
Use Scenario: Secondary overvoltage protection on 5–12 V DC power distribution networks feeding microcontrollers and communication ICs. IC Role / Device Role / Timing Role: Fast-response clamp parallel to bulk capacitance, activated within <1 ns to suppress ringing and overshoot. Use Value: Clamps 10/1000 μs surges to ≤10.5 V - ensuring downstream LDOs and PMICs remain within absolute maximum ratings during hot-swap or cable disconnect events. |
Use Scenario: ESD and surge protection on USB 2.0 data lines and VBUS in portable audio/video devices and docking stations. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp placed directly at connector, minimizing trace length to preserve signal integrity. Use Value: Delivers IEC 61000-4-2 ±15 kV contact discharge protection while adding <1 pF parasitic capacitance - preserving USB 2.0 eye diagram compliance. |
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 peak power (600 W), smaller SMB package (DO-214AA), higher VC (11.2 V) | Targeted at space-constrained consumer electronics; insufficient for ISO 7637-2 Pulse 5a | Select when board area is critical and surge threat level is limited to IEC 61000-4-2/4-4 only |
| 1.5KE6.8CA | Higher VC (12.6 V), through-hole DO-201 package, same 1500 W rating | Used in legacy industrial power supplies where manual assembly or high thermal mass is acceptable | Choose for cost-sensitive, non-automotive designs requiring proven reliability and easier hand-soldering |
Compared with SMBJ6.8CA and 1.5KE6.8CA, the 1.5SMC6.8CAHM3_A/H uniquely combines AEC-Q101 qualification, halogen-free compliance, and SMC footprint - making it the only option among the three validated for next-generation automotive ECUs requiring zero-defect SMT yield and extended temperature operation.
Availability
1.5SMC6.8CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and DC power rail hardening requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for 1.5SMC6.8CAHM3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered for high-energy transient suppression in automotive, industrial, and telecom systems - prioritizing low clamping voltage, repeatable surge endurance, and seamless integration into automated SMT lines.
FAQ
What is the breakdown voltage tolerance for 1.5SMC6.8CAHM3_A/H?
The 1.5SMC6.8CAHM3_A/H has a specified breakdown voltage (VBR) 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 consistent clamping behavior across production lots and supports reliable design margining for 5 V system protection. The value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's 88303 datasheet revision 09-Mar-2026.
Is 1.5SMC6.8CAHM3_A/H suitable for automotive applications?
Yes, 1.5SMC6.8CAHM3_A/H is AEC-Q101 qualified and explicitly designated for automotive use via the "HM3" suffix (halogen-free, RoHS-compliant, AEC-Q101). It meets stringent requirements for under-hood and cabin electronics, including operation from –65 °C to +150 °C, resistance to mechanical shock/vibration, and immunity to load dump and ESD per ISO 7637-2 and IEC 61000-4-2. The 1.5SMC6.8CAHM3_A/H is commonly deployed in ADAS camera modules and body control units.
What is the clamping voltage of 1.5SMC6.8CAHM3_A/H at its rated surge current?
The 1.5SMC6.8CAHM3_A/H clamps to a maximum of 10.5 V at its rated peak pulse current (IPPM) of 143 A, measured using the standardized 10/1000 μs double-exponential waveform. This clamping voltage is guaranteed across temperature and lifetime, and defines the upper voltage limit imposed on protected circuits during worst-case transients - critical for ensuring compatibility with 5 V logic families and USB PHYs.
Does 1.5SMC6.8CAHM3_A/H have polarity markings on the package?
No, the 1.5SMC6.8CAHM3_A/H is a bidirectional TVS diode and carries no polarity marking on its SMC (DO-214AB) package. Unlike unidirectional variants (e.g., 1.5SMC6.8A), it functions identically in both directions and requires no orientation during placement. This simplifies PCB layout and eliminates risk of reverse installation - a key advantage in high-density automotive and industrial boards.
What is the moisture sensitivity level (MSL) of 1.5SMC6.8CAHM3_A/H?
The 1.5SMC6.8CAHM3_A/H is rated MSL Level 1 per J-STD-020, with a maximum lead finish temperature of 260 °C. This means it can be subjected to standard Pb-free reflow profiles without baking or special handling - supporting uninterrupted SMT line throughput and eliminating moisture-related popcorning defects. The rating is verified in Vishay's qualification report and documented in the 88303 datasheet.
1.5SMC6.8CAHM3_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:
- -
- 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/H FAQ
1.How can I place an order for 1.5SMC6.8CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC6.8CAHM3_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 1.5SMC6.8CAHM3_A/H reliable?
The price and inventory of 1.5SMC6.8CAHM3_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 1.5SMC6.8CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC6.8CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC6.8CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC6.8CAHM3_A/H?
1.5SMC6.8CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC6.8CAHM3_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 1.5SMC6.8CAHM3_A/H?
For technical support, including 1.5SMC6.8CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC6.8CAHM3_A/H requirements.
6.How does Aetrix verify that 1.5SMC6.8CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC6.8CAHM3_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 1.5SMC6.8CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC6.8CAHM3_A/H?
All 1.5SMC6.8CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC6.8CAHM3_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 1.5SMC6.8CAHM3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC6.8CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC6.8CAHM3_A/H Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
