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Vishay General Semiconductor - Diodes Division SMB8J5.0CAHM3/I
- Part No.:
- SMB8J5.0CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J5.0CAHM3/I.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,951
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Product details
Overview
SMB8J5.0CAHM3/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on signal and power lines. It features a 5.0 V stand-off voltage (VWM), 6.4–7.25 V breakdown range (VBR at 10 mA), 800 W peak pulse power (10/1000 µs), 2000 A peak pulse current (IPPM), and clamps to ≤9.2 V at rated surge - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMB8J5.0CAHM3/I datasheet, SMB8J5.0CAHM3/I pinout, SMB8J5.0CAHM3/I application, or SMB8J5.0CAHM3/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance (HM3 suffix), and compatibility with 0.2" × 0.2" copper pad layouts per JEDEC standards.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, responding within <1 ps to transients induced by inductive switching or ESD events. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance, while the bidirectional configuration enables symmetric clamping across both polarities without external polarity management.
Rated for -55 °C to +150 °C operation and qualified to AEC-Q101, the SMB8J5.0CAHM3/I supports automotive-grade reliability under thermal cycling and mechanical stress. Its MSL Level 1 rating (260 °C peak reflow) and matte tin-plated leads meet J-STD-002 solderability requirements for automated SMT assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - maximum continuous reverse working voltage before leakage exceeds 10 μA; defines safe operating margin below breakdown |
| VBR (min/max) | 6.40 V / 7.25 V at 10 mA - guaranteed breakdown onset range; ensures predictable clamping initiation across production lots |
| IPPM | 2000 A (10/1000 µs) - peak surge current handling capacity; determines survivability against ISO 7637-2 Pulse 1/2/5a/b threats |
| VC | ≤9.2 V at IPPM - maximum clamped voltage during full-rated surge; sets upper bound on protected circuit overvoltage stress |
| PPPM | 800 W - peak pulse power dissipation capability; correlates directly with energy absorption (E = P × t) for transient suppression |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments and high-power industrial enclosures |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 2.2 mm height and 3.94 mm length; compatible with standard pick-and-place feeders |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, no polarity marking (bidirectional device); terminals are cathode/anode symmetric - either lead may serve as input or return path depending on transient polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Transient return path (bidirectional) | Provides low-impedance path to ground or reference during positive or negative surges; no fixed polarity assignment |
| Cathode (Lead 2) | Transient return path (bidirectional) | Electrically identical to Lead 1; symmetrical construction eliminates need for orientation during placement |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and body electronics per stress test requirements |
| Halogen-free & RoHS-compliant (HM3) | Meets EU Directive 2011/65/EU and IPC-1752A material declarations; supports green manufacturing and end-of-life recycling |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., EFT bursts), improving clamping precision and downstream IC safety margin |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free reflow without moisture-induced popcorn failure; eliminates pre-bake requirement in SMT line |
| Glass passivated junction | Provides stable VBR tolerance and long-term leakage stability under thermal/humidity bias, critical for 15-year automotive service life |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and MEMS pressure/temperature sensors from load dump and inductive kickback in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed between signal line and chassis ground, absorbing >99% of surge energy before it reaches the protected IC. Use Value: Enables compliance with ISO 16750-2 (load dump) and ISO 7637-2 (Pulse 1/2a/5a) without additional series impedance or filtering components. | Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers exposed to field wiring transients and lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp across input terminals, limiting voltage excursion to ≤9.2 V during 2 kV/1 Ω surge events per IEC 61000-4-5. Use Value: Maintains analog signal integrity by preventing op-amp saturation and ADC latch-up, reducing field failure rates in harsh factory environments. |
| USB Type-C Port Protection | Smart Meter Communication Interface |
Use Scenario: Suppressing ESD and cable discharge events on USB-C CC, SBU, and VBUS lines in portable diagnostic tools and infotainment head units. IC Role / Device Role / Timing Role: Fast-response (<1 ps) bidirectional clamp integrated into board-level ESD protection network adjacent to connector. Use Value: Achieves ±25 kV contact and ±30 kV air discharge immunity per IEC 61000-4-2 Level 4 without degrading high-speed signal integrity up to 10 Gbps. | Use Scenario: Shielding RS-485/PLC communication ports in utility smart meters from grid-switching transients and neutral-ground potential differences. IC Role / Device Role / Timing Role: Line-to-line and line-to-ground transient suppressor mounted at meter PCB edge, upstream of isolated transceiver. Use Value: Extends field lifetime beyond 20 years by preventing cumulative degradation of isolation barriers and transceiver inputs under repeated surge exposure. |
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/I | Same electrical specs but RoHS-compliant (E3), non-halogen-free; lacks halogen-free certification | Approved for commercial/industrial use; not certified for automotive AEC-Q101 applications requiring HM3 traceability | Select when halogen-free content is not mandated and cost optimization is prioritized over automotive qualification |
| SMAJ5.0CA | Lower PPPM (400 W), lower IPPM (100 A), SMA package (smaller footprint, higher RθJA) | Suitable for space-constrained consumer electronics; insufficient for automotive load dump or industrial 2 kV surge testing | Choose only for low-energy applications where 800 W/2000 A margin is unnecessary and PCB area is premium |
Compared with SMB8J5.0CAHE3/I, the SMB8J5.0CAHM3/I adds halogen-free compliance and AEC-Q101 validation for mission-critical automotive systems; versus SMAJ5.0CA, it delivers 2× peak power and 20× surge current capacity in a thermally robust SMB package - essential for sustained surge resilience in industrial and vehicular deployments.
Availability
SMB8J5.0CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and smart meter communication interface design requiring stable component supply across multi-year production cycles.
Supply support for SMB8J5.0CAHM3/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, MOSFETs, and protection devices with emphasis on reliability, power density, and automotive qualification.
The SMB8J5.0CAHM3/I belongs to Vishay's TRANSZORB® high-power TVS family, engineered specifically for robust transient suppression in automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and 800 W+ surge capability are mandatory.
FAQ
What is the clamping voltage of SMB8J5.0CAHM3/I at its rated peak pulse current?
The SMB8J5.0CAHM3/I clamps to a maximum of 9.2 V when subjected to its rated 2000 A peak pulse current (10/1000 µs waveform). This value is measured under standardized test conditions per ANSI/IEEE C62.35 and guarantees consistent overvoltage limiting across all units, enabling reliable protection of downstream 5 V logic and analog circuits without derating.
Is SMB8J5.0CAHM3/I suitable for automotive applications?
Yes, SMB8J5.0CAHM3/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction validated for automotive use. It meets requirements for under-hood and cabin electronics including sensor interfaces, body control modules, and infotainment power rails - confirmed by Vishay's official qualification report referenced in document 88422.
What does the "HM3" suffix mean in SMB8J5.0CAHM3/I?
The "HM3" suffix in SMB8J5.0CAHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It specifies that the device uses bromine/chlorine-free molding compounds and matte tin-plated leads meeting JESD 201 Class 2 whisker resistance - distinguishing it from E3 (RoHS only) and HE3 (AEC-Q101, non-halogen-free) variants.
How does SMB8J5.0CAHM3/I differ from unidirectional SMB10J5.0A?
SMB8J5.0CAHM3/I is bidirectional with 800 W PPPM and 2000 A IPPM, while SMB10J5.0A is unidirectional with 1000 W PPPM and 108.7 A IPPM. The bidirectional nature of SMB8J5.0CAHM3/I allows symmetric protection on AC-coupled or floating lines without polarity concerns, whereas SMB10J5.0A requires correct cathode orientation and handles higher power in one direction only.
What PCB layout guidance applies to SMB8J5.0CAHM3/I for optimal thermal performance?
For optimal thermal performance, SMB8J5.0CAHM3/I must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay document 88422. This layout reduces thermal resistance (RθJA = 72 °C/W typical) and prevents localized overheating during repetitive surge events - critical for maintaining clamping consistency in automotive and industrial applications.
SMB8J5.0CAHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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/I FAQ
1.How can I place an order for SMB8J5.0CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J5.0CAHM3/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 SMB8J5.0CAHM3/I reliable?
The price and inventory of SMB8J5.0CAHM3/I 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/I is usually 5 days.
3.What payment methods are accepted for SMB8J5.0CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J5.0CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J5.0CAHM3/I?
SMB8J5.0CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J5.0CAHM3/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 SMB8J5.0CAHM3/I?
For technical support, including SMB8J5.0CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J5.0CAHM3/I requirements.
6.How does Aetrix verify that SMB8J5.0CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SMB8J5.0CAHM3/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 SMB8J5.0CAHM3/I meets industry standards.
7.What is the process for return or replacement of SMB8J5.0CAHM3/I?
All SMB8J5.0CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J5.0CAHM3/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 SMB8J5.0CAHM3/I part is unused and in its original packaging.
Return procedure for SMB8J5.0CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J5.0CAHM3/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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