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Vishay General Semiconductor - Diodes Division 1.5SMC68CAHM3_A/H
- Part No.:
- 1.5SMC68CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC68CAHM3_A/H.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,476
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Product details
Overview
1.5SMC68CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, designed for high-energy surge protection. It features a 68 V breakdown voltage (VBR = 64.6–71.4 V at IT = 1.0 mA), 58.1 V stand-off voltage (VWM), 92.0 V maximum clamping voltage (VC) at 16.3 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 μs waveform - used to protect automotive sensor signal lines, industrial I/O ports, and power supply rails against lightning-induced transients and inductive switching spikes.
For engineers reviewing the 1.5SMC68CAHM3_A/H datasheet, 1.5SMC68CAHM3_A/H pinout, 1.5SMC68CAHM3_A/H application, or 1.5SMC68CAHM3_A/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, MSL Level 1 moisture sensitivity, halogen-free RoHS compliance, and thermal resistance (RθJA = 75 °C/W) under standard PCB pad layout conditions.
Technical Context
This device operates as a voltage-clamped transient protector with symmetrical avalanche breakdown in both polarities, enabling robust protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable leakage performance (<1.0 μA at VWM) and fast response time (<1.0 ns), while the low incremental surge resistance supports consistent clamping under repetitive surge events.
The 1.5SMC68CAHM3_A/H is rated for continuous power dissipation of 6.5 W on an infinite heatsink at 50 °C and handles non-repetitive peak forward surge currents up to 200 A (8.3 ms half-sine) in unidirectional mode - though its bidirectional configuration eliminates cathode/anode distinction and relies solely on symmetric reverse conduction behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at IT = 1.0 mA - defines reliable avalanche initiation threshold across temperature and unit variation |
| VWM | 58.1 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 92.0 V at 16.3 A - clamping voltage during 10/1000 μs surge, limiting downstream voltage stress |
| PPPM | 1500 W - peak pulse power handling capacity, derated above 25 °C per Fig. 2 |
| RθJA | 75 °C/W - thermal resistance junction-to-ambient on standard 8.0 mm × 8.0 mm copper pads |
| TJ max | +150 °C - maximum junction temperature, supporting operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Bidirectional construction has no polarity marking; terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically in either polarity - no cathode band marking required for bidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signals, differential buses, and floating nodes without polarity constraints |
| 1500 W peak pulse power (10/1000 μs) | Withstands high-energy surges common in automotive load-dump and industrial motor-switching environments |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control units, ADAS sensors, and body electronics |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without pre-baking or special handling |
| Low leakage & fast response (<1 ns) | Minimizes signal distortion and ensures protection activation before IC damage occurs |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor outputs (e.g., pressure, temperature) from ISO 7637-2 pulses and ESD events in vehicle cabins or powertrain zones. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector interface to shunt transients before reaching MCU ADC or transceiver inputs. Use Value: Maintains signal integrity under ±100 V/50 Ω surge (ISO 16750-2) while meeting AEC-Q101 lifetime requirements. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on each channel's input line, coordinated with series impedance and filtering. Use Value: Limits transient voltage to <92 V during 1500 W surges, preventing latch-up or gate oxide damage in input buffer ICs. |
| Telecom Line Interface | Power Supply Rail Clamping |
Use Scenario: Protecting Ethernet PHY or RS-485 transceivers connected to outdoor cabling subject to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level TVS on differential pair, placed after gas discharge tube (GDT) primary protection. Use Value: Provides low-clamping, fast-response backup protection with <1.0 μA leakage at 58.1 V, preserving receiver sensitivity. |
Use Scenario: Clamping 12 V or 24 V DC power rails feeding microcontrollers or FPGAs against load-dump transients per ISO 16750-2. IC Role / Device Role / Timing Role: Parallel-connected TVS across rail and ground, sized to absorb energy without thermal runaway. Use Value: Handles 16.3 A peak pulse current at 92 V clamping, reducing rail overshoot below IC absolute maximum ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CA | Lower PPPM (600 W), smaller SMB package (DO-214AA), VC = 103 V @ 5.8 A | Less robust for high-energy surges; suited for space-constrained consumer electronics, not automotive under-hood | Select when board area is critical and surge energy remains ≤600 W |
| 1.5KE68CA | Through-hole TO-218 package, same VBR/VC, PPPM = 1500 W, but no AEC-Q101 qualification | Lacks automotive reliability validation; requires wave soldering or manual assembly | Choose only for legacy through-hole designs where AEC-Q101 is not mandated |
Compared with SMBJ64CA and 1.5KE68CA, the 1.5SMC68CAHM3_A/H uniquely combines AEC-Q101 qualification, SMC surface-mount compatibility, and full 1500 W surge rating - making it the preferred choice for new automotive and industrial SMT designs requiring production-grade reliability and high-energy clamping.
Availability
1.5SMC68CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection circuits, and DC power rail clamping requiring stable component supply across extended production lifecycles.
Supply support for 1.5SMC68CAHM3_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, MOSFETs, and protection devices with emphasis on high-reliability, automotive-qualified, and industry-standard solutions.
The 1.5SMC Series was developed specifically for surface-mount transient voltage suppression in harsh environments - targeting automotive, industrial, and telecom applications where high pulse power, AEC-Q101 compliance, and compact packaging are essential.
FAQ
What does the "CA" suffix indicate in 1.5SMC68CAHM3_A/H?
The "CA" suffix in 1.5SMC68CAHM3_A/H denotes a bidirectional configuration - meaning the device provides symmetrical transient voltage suppression in both polarities, with identical breakdown and clamping characteristics regardless of voltage polarity applied across its terminals. This eliminates the need for polarity-aware placement and makes it ideal for protecting AC-coupled or differential signal paths.
Is 1.5SMC68CAHM3_A/H qualified for automotive use?
Yes, 1.5SMC68CAHM3_A/H is AEC-Q101 qualified, as confirmed by the "HM3" suffix (halogen-free, RoHS-compliant, AEC-Q101 qualified) and documented in Vishay's 1.5SMC Series specification (Document Number: 88303). It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD verification per automotive standards.
What is the maximum clamping voltage of 1.5SMC68CAHM3_A/H under surge conditions?
The maximum clamping voltage (VC) of 1.5SMC68CAHM3_A/H is 92.0 V at a peak pulse current (IPPM) of 16.3 A, measured using the standardized 10/1000 μs double-exponential surge waveform. This value represents the upper limit of voltage seen by protected circuitry during worst-case transient events.
How does the SMC (DO-214AB) package of 1.5SMC68CAHM3_A/H compare to SMB (DO-214AA)?
The SMC (DO-214AB) package used by 1.5SMC68CAHM3_A/H offers higher power handling than SMB (DO-214AA) due to larger copper pad area and lower thermal resistance (RθJA = 75 °C/W vs. ~100–120 °C/W for SMB). Its dimensions (7.75 mm × 6.22 mm × 2.62 mm) support 1500 W surge rating, whereas SMB is typically limited to 600 W.
What is the stand-off voltage (VWM) and why is it important for 1.5SMC68CAHM3_A/H?
The stand-off voltage (VWM) of 1.5SMC68CAHM3_A/H is 58.1 V - the maximum continuous reverse voltage the device can withstand without entering avalanche conduction. It must be selected ≥10–20 % above the system's normal operating voltage to prevent leakage or false triggering during steady-state operation while allowing margin for ripple and tolerance.
1.5SMC68CAHM3_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):
- 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)
1.5SMC68CAHM3_A/H FAQ
1.How can I place an order for 1.5SMC68CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC68CAHM3_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 1.5SMC68CAHM3_A/H reliable?
The price and inventory of 1.5SMC68CAHM3_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 1.5SMC68CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC68CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC68CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC68CAHM3_A/H?
1.5SMC68CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC68CAHM3_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 1.5SMC68CAHM3_A/H?
For technical support, including 1.5SMC68CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC68CAHM3_A/H requirements.
6.How does Aetrix verify that 1.5SMC68CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC68CAHM3_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 1.5SMC68CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC68CAHM3_A/H?
All 1.5SMC68CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC68CAHM3_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 1.5SMC68CAHM3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC68CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC68CAHM3_A/H Tags
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