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Vishay General Semiconductor - Diodes Division 1.5SMC8.2CAHM3/I
- Part No.:
- 1.5SMC8.2CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC8.2CAHM3/I.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,625
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Product details
Overview
1.5SMC8.2CAHM3/I 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 on signal and power lines. It features a 8.2 V breakdown voltage (VBR min/max = 7.79 V / 8.61 V at IT = 10 mA), 7.02 V stand-off voltage (VWM), clamps to ≤12.1 V at 200 A peak pulse current (IPPM), and delivers 1500 W peak pulse power with 10/1000 μs waveform - used in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC8.2CAHM3/I datasheet, 1.5SMC8.2CAHM3/I pinout, 1.5SMC8.2CAHM3/I application, or 1.5SMC8.2CAHM3/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, low clamping voltage under 200 A surge, and compatibility with automated SMT assembly on standard SMC footprints.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling robust protection against voltage transients induced by inductive switching, ESD, and lightning surges without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<200 μA at VWM), while MSL Level 1 rating supports lead-free reflow up to 260 °C peak.
The device exhibits a temperature coefficient of VBR of +0.065 %/°C and thermal resistance of 75 °C/W (junction-to-ambient) when mounted on 8.0 mm × 8.0 mm copper pads. It sustains repetitive 10/1000 μs pulses at 0.01 % duty cycle and derates linearly above TA = 25 °C per Figure 2 in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.79 V / 8.61 V at IT = 10 mA - defines reliable conduction onset under bidirectional surge conditions |
| VWM | 7.02 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | ≤12.1 V at 200 A (10/1000 μs) - clamping voltage limiting downstream IC stress during worst-case surge |
| PPPM | 1500 W - peak transient power handling capacity under standardized surge waveform |
| IPPM | 200 A - maximum non-repetitive peak pulse current the device safely clamps without failure |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.13 mm × 6.22 mm footprint and 3.20 mm height |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1, compatible with J-STD-002 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Terminal A | Bidirectional conduction path - no polarity marking; symmetrical behavior relative to cathode |
| Cathode | Terminal K | Bidirectional conduction path - no polarity marking; symmetrical behavior relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection on AC-coupled or floating lines without polarity constraints |
| AEC-Q101 qualified (HM3) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for modern automotive and industrial PCBs |
| 1500 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly laid out |
| Low clamping ratio (VC/VBR ≈ 1.55) | Minimizes overvoltage stress on protected ICs compared to higher-ratio suppressors |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor signal lines (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in engine control units. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector entry point to shunt surge energy before reaching signal conditioning circuitry. Use Value: Clamps transients to ≤12.1 V within nanoseconds, preserving integrity of 3.3 V/5 V microcontrollers and ADC front-ends. |
Use Scenario: Safeguarding PLC digital input modules against field-wiring induced surges from relay coils or motor drives. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input channels, coordinated with series impedance and filtering. Use Value: Withstands 200 A surges while maintaining <200 μA leakage at 7.02 V, ensuring stable logic-level detection during normal operation. |
| Telecom Line Interface | Consumer USB/Display Port ESD Protection |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs from lightning-induced common-mode surges on outdoor cabling. IC Role / Device Role / Timing Role: Common-mode TVS pair (with matching unidirectional devices) on differential pairs to suppress asymmetric transients. Use Value: Symmetric 8.2 V VBR ensures balanced clamping on both lines, reducing data corruption risk during fast-rising surges. |
Use Scenario: Board-level ESD protection for USB 2.0 data lines and HDMI/DisplayPort hot-plug detection pins in set-top boxes and monitors. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp placed adjacent to connector to divert IEC 61000-4-2 ±15 kV contact discharge. Use Value: Fast response time and 12.1 V clamping prevent latch-up or gate oxide damage in high-speed interface ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0CA | Lower PPPM (600 W), same VWM (6.4 V), smaller SMB package (DO-214AA) | Limited to lower-energy surges; unsuitable for IEC 61000-4-5 Level 4 | Select when board space is constrained and surge threat level is ≤1 kV |
| 1.5KE8.2CA | Through-hole TO-218 package, identical electrical specs but incompatible with SMT assembly | Requires manual or wave-solder process; not suitable for high-volume automated production | Choose only for legacy through-hole designs or prototyping where rework flexibility is prioritized |
Compared with SMBJ8.0CA and 1.5KE8.2CA, the 1.5SMC8.2CAHM3/I uniquely combines AEC-Q101 qualification, halogen-free compliance, 1500 W surge rating, and SMC surface-mount compatibility - making it the preferred choice for automotive and industrial SMT production requiring long-term supply stability and regulatory alignment.
Availability
1.5SMC8.2CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom line interface applications requiring stable component supply, AEC-Q101 validation, and halogen-free manufacturing compliance.
Supply support for 1.5SMC8.2CAHM3/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The 1.5SMC Series was developed for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where compact size, surge robustness, and qualification-grade consistency are critical.
FAQ
What does the "HM3" suffix mean in 1.5SMC8.2CAHM3/I?
The HM3 suffix in 1.5SMC8.2CAHM3/I indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification - confirming the device meets automotive-grade reliability standards including temperature cycling, highly accelerated life testing, and ESD robustness. This distinguishes it from commercial-grade M3 or E3 variants and validates its use in under-hood and safety-critical vehicle subsystems.
Is 1.5SMC8.2CAHM3/I unidirectional or bidirectional?
1.5SMC8.2CAHM3/I is a bidirectional TVS diode, as confirmed by the "CA" suffix and absence of polarity marking. It provides symmetrical clamping behavior across both terminals, making it suitable for protecting AC-coupled signals, differential buses like RS-485, or floating inputs where polarity reversal may occur during surge events.
What is the maximum clamping voltage of 1.5SMC8.2CAHM3/I at rated surge current?
The maximum clamping voltage (VC) of 1.5SMC8.2CAHM3/I is 12.1 V when subjected to its rated 200 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured at TA = 25 °C with specified mounting conditions (0.31″ × 0.31″ copper pads), and represents the upper limit of voltage seen by protected circuitry during worst-case transient events.
Can 1.5SMC8.2CAHM3/I be used in place of a unidirectional 1.5SMC8.2A variant?
No - 1.5SMC8.2CAHM3/I is not a drop-in replacement for unidirectional 1.5SMC8.2A. While both share identical VBR and VWM ranges, the CA version lacks polarity marking and conducts in both directions, which may cause unintended conduction in DC-biased circuits. Use only where bidirectional protection is explicitly required and system topology supports symmetrical clamping.
What is the thermal resistance of 1.5SMC8.2CAHM3/I, and how does it affect layout?
The typical junction-to-ambient thermal resistance (RθJA) of 1.5SMC8.2CAHM3/I is 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. To maintain safe junction temperatures during repetitive surges, PCB layout must provide adequate copper area and thermal vias - undersized pads will increase RθJA, risking thermal runaway or parametric shift during sustained transient activity.
1.5SMC8.2CAHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7.02V
- Voltage - Breakdown (Min):
- 7.79V
- Voltage - Clamping (Max) @ Ipp:
- 12.1V
- Current - Peak Pulse (10/1000µs):
- 124A
- 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)
1.5SMC8.2CAHM3/I FAQ
1.How can I place an order for 1.5SMC8.2CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC8.2CAHM3/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 1.5SMC8.2CAHM3/I reliable?
The price and inventory of 1.5SMC8.2CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC8.2CAHM3/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC8.2CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC8.2CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC8.2CAHM3/I?
1.5SMC8.2CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC8.2CAHM3/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 1.5SMC8.2CAHM3/I?
For technical support, including 1.5SMC8.2CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC8.2CAHM3/I requirements.
6.How does Aetrix verify that 1.5SMC8.2CAHM3/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC8.2CAHM3/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 1.5SMC8.2CAHM3/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC8.2CAHM3/I?
All 1.5SMC8.2CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC8.2CAHM3/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 1.5SMC8.2CAHM3/I part is unused and in its original packaging.
Return procedure for 1.5SMC8.2CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC8.2CAHM3/I Tags
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