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Vishay General Semiconductor - Diodes Division SMA5J8.0CAHM3/H
- Part No.:
- SMA5J8.0CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J8.0CAHM3/H.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,024
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Product details
Overview
SMA5J8.0CAHM3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for robust overvoltage protection of sensitive electronics. It features a 8.0 V stand-off voltage (VWM), 13.6 V maximum clamping voltage (VC) at 36.8 A peak pulse current (IPPM), and 500 W peak pulse power (10/1000 µs waveform), commonly deployed on automotive sensor signal lines and industrial I/O interfaces.
For engineers reviewing the SMA5J8.0CAHM3/H datasheet, SMA5J8.0CAHM3/H pinout, SMA5J8.0CAHM3/H application, or SMA5J8.0CAHM3/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, low incremental surge resistance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) specified between 8.89 V and 9.83 V at 1 mA test current. Its clamping performance is characterized under standardized 10/1000 µs surge waveforms, delivering consistent voltage limiting up to 13.6 V at rated IPPM.
The device uses a glass-passivated silicon junction and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its thermal resistance is 80 °C/W (junction-to-ambient) and 25 °C/W (junction-to-lead), enabling reliable operation within -55 °C to +150 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum reverse stand-off voltage before conduction begins; defines operating margin below clamping threshold. |
| VBR (min/max) | 8.89 V / 9.83 V - Breakdown voltage range at 1 mA; ensures predictable turn-on across production lot. |
| VC @ IPPM | 13.6 V - Clamped voltage at 36.8 A peak pulse current; determines protected circuit's maximum transient exposure. |
| PPPM | 500 W - Peak pulse power rating (10/1000 µs); quantifies single-event surge energy absorption capability. |
| IPPM | 36.8 A - Peak pulse current corresponding to VC; used to size PCB trace width and layout for surge path. |
| TJ max. | +150 °C - Maximum junction temperature; sets thermal derating limits for high ambient or repetitive surge conditions. |
| Package | SMA (DO-214AC) - Surface-mount package with 5.28 mm × 4.50 mm footprint; compatible with standard SMT pick-and-place and reflow profiles. |
Pinout & Package
Package: SMA (DO-214AC), bidirectional configuration with no polarity marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, meeting JESD 201 Class 2 whisker test requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | No defined anode/cathode; terminals interchangeable; conducts identically in either direction during overvoltage events. |
| Case (body) | Thermal and mechanical interface | Plastic molded body provides UL 94 V-0 flammability rating; transfers heat to PCB copper pads via terminal leads. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for automotive and industrial end equipment with HM3 suffix. |
| Low incremental surge resistance | Minimizes VC rise under high di/dt transients, improving protection margin for fast-rising ESD or inductive spikes. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies manufacturing handling. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector entry point to clamp transients before reaching signal conditioning circuitry. Use Value: Maintains signal integrity by limiting voltage excursions to ≤13.6 V during 500 W surges, preserving downstream ADC and microcontroller input stages. |
Use Scenario: Shielding digital and analog I/O channels on programmable logic controller modules from field-induced surges and ground bounce. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted directly at terminal block interface to absorb fast transients before isolation barriers or level shifters. Use Value: Enables robust operation in factory environments with frequent motor switching, reducing field failure rates linked to ESD and inductive kickback. |
| Consumer Power Adapter Interface | Telecom Line Card Surge Suppression |
Use Scenario: Safeguarding USB-C PD and auxiliary power rails in smart home hubs against AC line coupling and hot-plug transients. IC Role / Device Role / Timing Role: Secondary-side TVS on 5–12 V DC distribution paths to suppress coupled noise from switching regulators and external cables. Use Value: Prevents latch-up or damage in PMICs and USB controllers by clamping surges within 1 ns response time and holding VC ≤13.6 V. |
Use Scenario: Front-end protection of Ethernet PHYs and DSL line drivers exposed to lightning-induced surges on outdoor-facing ports. IC Role / Device Role / Timing Role: First-stage TVS on differential pairs to shunt common-mode energy before transformer-coupled isolation. Use Value: Withstands repeated 10/1000 µs surges up to 500 W while maintaining low capacitance (<100 pF at VWM), preserving signal integrity at 100 Mbps+ data rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ8.0CA | Same VWM (8.0 V), slightly higher VC (13.9 V), identical PPPM (500 W), non-AEC-Q101 rated. | Lacks automotive qualification; suitable for commercial/industrial use only. | Select SMA5J8.0CAHM3/H when AEC-Q101 compliance and halogen-free construction are mandatory. |
| ON Semiconductor 1.5SMC8.0CA | Same VWM and VC, but in larger SMC (DO-214AB) package (7.11 mm × 6.22 mm); higher RθJA (60 °C/W). | Requires larger PCB area and offers lower thermal efficiency in high-density layouts. | Prefer SMA5J8.0CAHM3/H for space-constrained automotive modules where SMA footprint and MSL Level 1 are critical. |
Compared with SMAJ8.0CA and 1.5SMC8.0CA, the SMA5J8.0CAHM3/H delivers identical electrical protection performance in a smaller, automotive-qualified, halogen-free package-making it optimal for next-generation ADAS sensors and compact industrial edge nodes where board space, reliability, and regulatory compliance are jointly constrained.
Availability
SMA5J8.0CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor systems, industrial PLC I/O modules, and telecom line card designs requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant surge protection.
Supply support for SMA5J8.0CAHM3/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, high-power-density solutions.
The SMA5J series was developed specifically for high-energy transient suppression in automotive and industrial environments, combining AEC-Q101 qualification, halogen-free materials, and optimized thermal performance in the compact SMA package.
FAQ
What does the "HM3" suffix indicate in SMA5J8.0CAHM3/H?
The "HM3" suffix in SMA5J8.0CAHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "H" indicates AEC-Q101 compliance, "M3" confirms halogen-free material content, and "/H" at the end specifies the revision code per Vishay's ordering nomenclature. This makes SMA5J8.0CAHM3/H suitable for automotive applications requiring both environmental and reliability certifications.
Is SMA5J8.0CAHM3/H unidirectional or bidirectional?
SMA5J8.0CAHM3/H is a bidirectional transient voltage suppressor, as confirmed by the "CA" suffix in its part number. It provides symmetrical clamping in both polarities, with identical VBR, VC, and IPPM characteristics regardless of voltage polarity-ideal for protecting AC-coupled, differential, or floating signal paths without polarity constraints.
What is the maximum clamping voltage of SMA5J8.0CAHM3/H and under what test condition?
The maximum clamping voltage of SMA5J8.0CAHM3/H is 13.6 V, measured at a peak pulse current (IPPM) of 36.8 A using the standardized 10/1000 µs double-exponential surge waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuits during surge events.
Does SMA5J8.0CAHM3/H require a heatsink for 500 W surge handling?
No, SMA5J8.0CAHM3/H does not require an external heatsink for single-event 500 W surge handling. Its thermal design relies on short-duration pulse dissipation into PCB copper pads-specifically 0.2" × 0.2" (5.0 mm × 5.0 mm) copper areas per terminal-as defined in the Vishay datasheet. Continuous power dissipation is not applicable; the device is rated for non-repetitive pulses only.
How does SMA5J8.0CAHM3/H differ from the SMA5J8.0A variant?
SMA5J8.0CAHM3/H is bidirectional (CA suffix) and AEC-Q101/halogen-free qualified (HM3 suffix), whereas SMA5J8.0A is unidirectional (A suffix) and commercial-grade (E3 or M3). SMA5J8.0CAHM3/H has no polarity marking, supports symmetrical clamping, and is validated for automotive temperature cycling and humidity testing-unlike the unidirectional SMA5J8.0A, which lacks automotive qualification and reverse-direction capability.
SMA5J8.0CAHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 36.8A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J8.0CAHM3/H FAQ
1.How can I place an order for SMA5J8.0CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J8.0CAHM3/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 SMA5J8.0CAHM3/H reliable?
The price and inventory of SMA5J8.0CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J8.0CAHM3/H is usually 5 days.
3.What payment methods are accepted for SMA5J8.0CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J8.0CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J8.0CAHM3/H?
SMA5J8.0CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J8.0CAHM3/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 SMA5J8.0CAHM3/H?
For technical support, including SMA5J8.0CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J8.0CAHM3/H requirements.
6.How does Aetrix verify that SMA5J8.0CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMA5J8.0CAHM3/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 SMA5J8.0CAHM3/H meets industry standards.
7.What is the process for return or replacement of SMA5J8.0CAHM3/H?
All SMA5J8.0CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J8.0CAHM3/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 SMA5J8.0CAHM3/H part is unused and in its original packaging.
Return procedure for SMA5J8.0CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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