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Vishay General Semiconductor - Diodes Division SMB8J5.0CAHM3_A/H
- Part No.:
- SMB8J5.0CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J5.0CAHM3_A/H.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,380
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Product details
Overview
SMB8J5.0CAHM3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection with 800 W peak pulse power (10/1000 µs), 5.0 V stand-off voltage, and 9.2 V clamping voltage at 2000 A peak pulse current. It protects sensitive signal lines in automotive sensor units, industrial I/O interfaces, and telecom front-end circuits.
For engineers reviewing the SMB8J5.0CAHM3_A/H datasheet, SMB8J5.0CAHM3_A/H pinout, SMB8J5.0CAHM3_A/H application, or SMB8J5.0CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VWM = 1.84), MSL Level 1 rating, and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal bias (≤5.0 V), it exhibits <1 μA reverse leakage; during transients exceeding breakdown (6.4–7.25 V at 10 mA), it avalanches to clamp voltage ≤9.2 V within picoseconds. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
Designed for automotive-grade reliability, SMB8J5.0CAHM3_A/H meets AEC-Q101 stress tests including temperature cycling, HTRB, and ESD (HBM ≥8 kV). The SMB package enables automated placement while maintaining thermal resistance of 20 °C/W (junction-to-lead) and 72 °C/W (junction-to-ambient) on standard 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before significant leakage begins |
| VBR min/max | 6.40 V / 7.25 V at 10 mA - Confirmed breakdown range ensuring reliable turn-on during overvoltage events |
| VC @ IPPM | 9.2 V at 2000 A - Clamping voltage limits downstream IC stress during 10/1000 µs surges |
| PPPM | 800 W - Peak pulse power handling capacity defines maximum transient energy absorption |
| ID @ VWM | <1.0 μA - Ultra-low leakage preserves signal integrity in high-impedance sensor lines |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and industrial enclosures |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 2.20 mm height and 5.59 mm length for PCB space efficiency |
Pinout & Package
SMB8J5.0CAHM3_A/H uses a 2-terminal SMB (DO-214AA) package with no polarity marking-bidirectional symmetry means both terminals are functionally identical. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per Vishay's thermal derating guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Either terminal conducts avalanche current during positive or negative surges-no cathode band marking required |
| Case (body) | Thermal conduction path | Plastic body transfers heat to PCB copper via solder joints; RθJL = 20 °C/W supports high-reliability thermal management |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTGB, TCT, and H3TRB |
| Halogen-free & RoHS-compliant (HM3) | Meets JEDEC J-STD-201 Class 2 whisker resistance and EU Directive 2011/65/EU without brominated flame retardants |
| MSL Level 1 (260 °C peak) | Enables single-pass reflow without moisture-induced popcorning or delamination |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
| Low clamping ratio (VC/VWM = 1.84) | Minimizes voltage overshoot across protected circuitry compared to competing TVS devices |
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 in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt clamping element placed directly at connector entry point to divert surge energy before reaching ASIC or microcontroller pins. Use Value: Withstands 2000 A peak pulse current and maintains ≤9.2 V clamping, preventing latch-up or gate oxide damage in 3.3 V/5 V interface ICs. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive switching transients from solenoids and contactors. IC Role / Device Role / Timing Role: Bidirectional voltage clamp across isolated input optocoupler supply rails to suppress common-mode surges induced by field wiring. Use Value: 800 W peak pulse power rating and 150 °C max junction temperature support continuous operation in uncooled control cabinets up to 85 °C ambient. |
| Telecom Line Interface Protection | Consumer USB/DisplayPort ESD Guard |
Use Scenario: Front-end protection for Ethernet PHYs and xDSL line drivers against lightning-induced surges and AC power cross-talk. IC Role / Device Role / Timing Role: Primary surge suppression stage before secondary TVS or GDT, placed adjacent to RJ-45 magnetics to minimize trace inductance. Use Value: 6.4–7.25 V breakdown range ensures fast response before damage threshold of 100BASE-TX transceivers (typically 12 V abs max). | Use Scenario: ESD and surge protection for high-speed data lanes in laptops, monitors, and docking stations compliant with IEC 61000-4-2 Level 4 (±15 kV air). IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical) bidirectional clamp integrated into USB 3.2 Gen 2 or DisplayPort 1.4 routing paths. Use Value: Sub-10 V clamping voltage prevents forward-biasing of internal ESD diodes in host controller PHYs during multi-kV transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J5.0CAHE3_A/H | RoHS-compliant but not halogen-free; same electrical specs and AEC-Q101 qualification | Acceptable for commercial-automotive hybrids where halogen content is unrestricted | Select when cost sensitivity outweighs halogen-free requirement and full AEC-Q101 compliance is mandatory |
| SMAJ5.0CA | Lower PPPM (400 W), higher VC (11.2 V), SMA package (smaller thermal mass) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a load-dump simulation | Choose only for space-constrained consumer designs with sub-1000 A surge exposure and no automotive qualification needed |
Compared with SMB8J5.0CAHM3_A/H, SMB8J5.0CAHE3_A/H offers identical surge performance and qualification at lower material cost, while SMAJ5.0CA trades robustness for footprint reduction-making the HM3 variant optimal for AEC-Q101-critical, high-energy automotive and industrial deployments.
Availability
SMB8J5.0CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface boards requiring stable component supply with guaranteed long-term lifecycle support.
Supply support for SMB8J5.0CAHM3_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 reliability and automotive-grade validation.
The SMB8J series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-power transient suppression in harsh environments where AEC-Q101 compliance, low clamping voltage, and repeatable surge endurance are mandatory.
FAQ
What is the clamping voltage of SMB8J5.0CAHM3_A/H at its rated peak pulse current?
The SMB8J5.0CAHM3_A/H has a maximum clamping voltage (VC) of 9.2 V when subjected to its rated peak pulse current of 2000 A using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and confirmed in Vishay's Document Number 88422, page 3, under Bidirectional Electrical Characteristics. The low VC ensures protected downstream ICs remain within safe operating voltage margins during surge events.
Is SMB8J5.0CAHM3_A/H suitable for automotive applications?
Yes, SMB8J5.0CAHM3_A/H is AEC-Q101 qualified and explicitly designated for automotive use with the HM3 suffix indicating halogen-free, RoHS-compliant, and AEC-Q101 validated construction. It meets stress test requirements including temperature cycling, high-temperature reverse bias, and mechanical shock-making it appropriate for engine control units, ADAS sensor interfaces, and body electronics where reliability under thermal and electrical stress is critical.
How does the SMB8J5.0CAHM3_A/H differ from unidirectional variants like SMB10J5.0A?
SMB8J5.0CAHM3_A/H is bidirectional with symmetrical clamping for both polarities, while SMB10J5.0A is unidirectional and features a cathode band marking. The SMB8J version delivers 2000 A peak pulse current and 800 W power rating, versus 1000 A and 1000 W for the unidirectional SMB10J5.0A. Additionally, SMB8J5.0CAHM3_A/H has a lower clamping voltage (9.2 V vs. 9.2 V for SMB10J5.0A-but at double the current), and is qualified under AEC-Q101 with HM3 environmental compliance.
What is the thermal resistance specification for SMB8J5.0CAHM3_A/H?
SMB8J5.0CAHM3_A/H has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W and junction-to-ambient resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. These values are specified in the Thermal Characteristics table of Vishay Document 88422 and define the device's ability to dissipate surge energy without exceeding the +150 °C maximum junction temperature under repetitive or single-event conditions.
Does SMB8J5.0CAHM3_A/H require special PCB layout considerations?
Yes-Vishay specifies minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad areas per terminal to achieve rated surge performance and thermal derating. Traces to SMB8J5.0CAHM3_A/H must be short and wide to minimize inductance, especially in high-di/dt applications like load-dump protection. The device's bidirectional symmetry eliminates polarity orientation concerns, but symmetric thermal coupling to ground planes is recommended to maintain RθJA ≤72 °C/W and avoid localized hot spots during repeated surges.
SMB8J5.0CAHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 87A
- Power - Peak Pulse:
- 800W
- 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-214AA (SMB)
SMB8J5.0CAHM3_A/H FAQ
1.How can I place an order for SMB8J5.0CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J5.0CAHM3_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 SMB8J5.0CAHM3_A/H reliable?
The price and inventory of SMB8J5.0CAHM3_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 SMB8J5.0CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMB8J5.0CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J5.0CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J5.0CAHM3_A/H?
SMB8J5.0CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J5.0CAHM3_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 SMB8J5.0CAHM3_A/H?
For technical support, including SMB8J5.0CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J5.0CAHM3_A/H requirements.
6.How does Aetrix verify that SMB8J5.0CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMB8J5.0CAHM3_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 SMB8J5.0CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMB8J5.0CAHM3_A/H?
All SMB8J5.0CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J5.0CAHM3_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 SMB8J5.0CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMB8J5.0CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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