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Vishay General Semiconductor - Diodes Division 1.5SMC68AHM3_A/I
- Part No.:
- 1.5SMC68AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC68AHM3_A/I.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,954
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Product details
Overview
1.5SMC68AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, rated for 68 V breakdown voltage (VBR = 64.6–71.4 V at IT = 1.0 mA), 1500 W peak pulse power (10/1000 μs), and clamping voltage of 92.0 V at 16.3 A. It protects automotive-grade power rails and signal lines against ESD, lightning surges, and inductive switching transients.
For engineers reviewing the 1.5SMC68AHM3_A/I datasheet, 1.5SMC68AHM3_A/I pinout, 1.5SMC68AHM3_A/I application, or 1.5SMC68AHM3_A/I equivalent, this device delivers AEC-Q101 qualification, halogen-free RoHS compliance, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for high-reliability automotive and industrial PCB designs.
Technical Context
This TVS operates as a unidirectional clamping device with cathode-banded polarity, leveraging glass-passivated junction technology for stable avalanche breakdown and fast response (<1 ns). Its thermal design supports 150 °C maximum junction temperature and 75 °C/W junction-to-ambient thermal resistance on standard 8.0 mm × 8.0 mm copper pads.
The 1.5SMC68AHM3_A/I exhibits 58.1 V stand-off voltage (VWM) and 1.0 μA max reverse leakage at VWM, enabling reliable operation in 48 V and 60 V nominal systems. Its 10/1000 μs waveform rating aligns with IEC 61000-4-5 Level 4 surge immunity requirements for automotive electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at 1.0 mA - defines precise avalanche initiation window for predictable clamping onset |
| VWM | 58.1 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 92.0 V at 16.3 A - clamped voltage during 1500 W transient, limiting downstream IC stress |
| PPPM | 1500 W (10/1000 μs) - peak surge energy handling capacity for lightning and load-dump events |
| TJ max | +150 °C - enables use in under-hood automotive environments without derating penalties |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, MSL Level 1 (260 °C reflow peak), halogen-free and RoHS-compliant per HM3 suffix.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected circuit ground or low-side reference | Enables unidirectional clamping from cathode to anode during overvoltage events |
| Cathode (banded end) | Current exit terminal in forward bias; connected to protected line (e.g., 48 V rail or CAN bus) | Defines polarity-sensitive placement; reverse connection disables clamping function |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensors |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 4 kV surge tests on 2 Ω source impedance without degradation |
| Glass passivated junction | Ensures long-term stability of VBR and leakage across -65 °C to +150 °C operating range |
| Low clamping ratio (VC/VBR ≈ 1.36) | Minimizes overvoltage overshoot during fast transients, protecting 75 V-rated MOSFETs and gate drivers |
| MSL Level 1 | Allows unlimited floor life and standard reflow profiles without baking preconditioning |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 48 V battery-fed ECUs against load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground, clamping surges within 1 ns. Use Value: Limits voltage to ≤92 V during 16.3 A transients, preventing damage to 100 V-rated DC-DC controllers and microcontrollers. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: Low-capacitance TVS on signal line to ground, preserving signal integrity up to 1 MHz. Use Value: Delivers <1.0 μA leakage at 58.1 V, avoiding DC offset errors in precision 24-bit ADC front-ends. |
| Telecom DC Power Input Protection | Motor Drive Gate Driver Protection |
Use Scenario: Safeguarding PoE-powered equipment inputs against induced surges from nearby AC mains or lightning coupling. IC Role / Device Role / Timing Role: Primary-level TVS on 57 V nominal DC input, coordinated with upstream fuses. Use Value: Absorbs 1500 W surges while maintaining VC below 92 V, ensuring compatibility with 100 V input-rated PMICs. |
Use Scenario: Clamping Miller-induced spikes on high-side N-channel MOSFET gates in 3-phase inverters. IC Role / Device Role / Timing Role: Fast-response TVS from gate to source, suppressing >100 V transients before driver IC latch-up. Use Value: 92.0 V clamping voltage prevents gate oxide breakdown in 100 V logic-level MOSFETs during dV/dt events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ68A | Same VBR range (64.6–71.4 V), but lower PPPM = 400 W and SMA package (smaller thermal mass) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or IEC 61000-4-5 Level 4 | Select when board space is constrained and surge energy is ≤400 W (e.g., consumer USB ports) |
| 1.5KE68A | Through-hole DO-201 package, identical electrical specs, but no AEC-Q101 qualification or MSL Level 1 rating | Not suitable for automated SMT assembly or automotive under-hood thermal cycling | Choose only for legacy through-hole designs or non-automotive industrial prototypes |
Compared with SMAJ68A and 1.5KE68A, the 1.5SMC68AHM3_A/I uniquely combines AEC-Q101 qualification, 1500 W surge capability, and SMC surface-mount compatibility - making it the only option qualified for production automotive power electronics requiring zero rework risk and full traceability.
Availability
1.5SMC68AHM3_A/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and motor drive gate protection requiring stable component supply and full lifecycle support.
Supply support for 1.5SMC68AHM3_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 automotive-grade validation.
The 1.5SMC Series was designed specifically for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness, consistency, and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC68AHM3_A/I at its rated peak pulse current?
The 1.5SMC68AHM3_A/I has a maximum clamping voltage (VC) of 92.0 V at its rated peak pulse current (IPPM) of 16.3 A, measured using the standardized 10/1000 μs double-exponential waveform. This value ensures downstream components see less than 92 V during worst-case surge events, directly supporting design margin calculations for 100 V-rated power semiconductors and interface ICs.
Is the 1.5SMC68AHM3_A/I suitable for automotive applications?
Yes, the 1.5SMC68AHM3_A/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction with automotive-grade reliability testing. It meets requirements for under-hood and chassis-mounted modules, including temperature cycling, high-temperature reverse bias, and mechanical shock - making it fully suitable for production automotive use in 1.5SMC68AHM3_A/I-based protection circuits.
What does the "_A/I" suffix mean in 1.5SMC68AHM3_A/I?
The "_A" denotes the voltage variant (68 V breakdown) and AEC-Q101 qualification level for the 1.5SMC68AHM3_A/I series, while "/I" specifies packaging in 13-inch diameter plastic tape and reel with 3500 units per reel. This format ensures automated pick-and-place compatibility and full traceability for high-volume automotive manufacturing.
How does the 1.5SMC68AHM3_A/I compare to bidirectional TVS diodes like 1.5SMC68CA?
The 1.5SMC68AHM3_A/I is unidirectional and features a cathode band for polarity-sensitive placement, whereas 1.5SMC68CA is bidirectional with no polarity marking. The 1.5SMC68AHM3_A/I offers tighter leakage control (1.0 μA at VWM) and is optimized for DC rail protection, while 1.5SMC68CA suits AC-coupled or differential signal lines like RS-485 or CAN FD where symmetric clamping is required.
What is the thermal resistance of the 1.5SMC68AHM3_A/I, and how does it affect layout?
The 1.5SMC68AHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. To maintain safe operation at full 1500 W surge ratings, PCB layout must replicate this pad area - undersized pads increase junction temperature and reduce surge endurance. Thermal vias under pads further improve heat dissipation in high-duty-cycle applications.
1.5SMC68AHM3_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):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 16.3A
- 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)
1.5SMC68AHM3_A/I FAQ
1.How can I place an order for 1.5SMC68AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC68AHM3_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 1.5SMC68AHM3_A/I reliable?
The price and inventory of 1.5SMC68AHM3_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 1.5SMC68AHM3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC68AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC68AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC68AHM3_A/I?
1.5SMC68AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC68AHM3_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 1.5SMC68AHM3_A/I?
For technical support, including 1.5SMC68AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC68AHM3_A/I requirements.
6.How does Aetrix verify that 1.5SMC68AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC68AHM3_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 1.5SMC68AHM3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC68AHM3_A/I?
All 1.5SMC68AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC68AHM3_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 1.5SMC68AHM3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC68AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC68AHM3_A/I Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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Diodes Incorporated
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