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Vishay General Semiconductor - Diodes Division SMBJ8.0CAHM3_A/I
- Part No.:
- SMBJ8.0CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ8.0CAHM3_A/I.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,177
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Product details
Overview
SMBJ8.0CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 8.0 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 µs), and clamps to ≤13.6 V at 44.1 A peak surge current - deployed in sensor interface protection, industrial I/O modules, and telecom line drivers.
For engineers reviewing the SMBJ8.0CAHM3_A/I datasheet, SMBJ8.0CAHM3_A/I pinout, SMBJ8.0CAHM3_A/I application, or SMBJ8.0CAHM3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, halogen-free RoHS compliance, and thermal resistance (RθJA = 100 °C/W) under standard PCB pad layout.
Technical Context
This device operates as a voltage-clamped crowbar during ESD or lightning-induced surges, with symmetrical breakdown behavior in both polarities due to its bidirectional construction. Its glass-passivated junction ensures stable VBR (6.4–7.25 V min/max at 10 mA) and low incremental surge resistance, enabling fast response (<1 ns) to transients.
The SMBJ8.0CAHM3_A/I is rated for repetitive 10/1000 µs pulses at 0.01% duty cycle and supports continuous operation up to TJ = 150 °C. Its M3 suffix confirms halogen-free, RoHS-compliant construction and JESD201 Class 2 whisker resistance - critical for automotive and industrial reflow reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - maximum steady-state reverse voltage before significant leakage; sets operating margin below clamping threshold |
| VBR (min/max) | 6.4 V / 7.25 V at 10 mA - guaranteed breakdown onset range; defines minimum overvoltage detection sensitivity |
| VC @ IPPM | ≤13.6 V at 44.1 A - clamped voltage during 600 W transient; determines protected circuit's maximum stress level |
| PPPM | 600 W (10/1000 µs) - peak surge energy handling capacity; validates robustness against IEC 61000-4-5 Level 4 surges |
| ID @ VWM | ≤50 µA - reverse leakage at stand-off; ensures minimal power loss and signal integrity in high-impedance nodes |
| RθJA | 100 °C/W - junction-to-ambient thermal resistance on 5.0 mm × 5.0 mm copper pads; guides PCB thermal design |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood or enclosed industrial environments |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode / Anode (symmetrical) | Bidirectional terminal pair | No polarity marking; either end functions identically as input/output for AC or differential signal paths |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-earth) without derating on standard PCB layout |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain and body electronics where reliability under thermal cycling and vibration is mandatory |
| Halogen-free, RoHS-compliant (M3) | Meets EU ELV Directive and IPC-1752A material declaration requirements for sustainable manufacturing |
| MSL Level 1 (260 °C peak reflow) | Enables single-pass lead-free reflow assembly without moisture sensitivity concerns or baking preconditioning |
| Low clamping ratio (VC/VBR ≈ 1.88) | Minimizes voltage overshoot during fast transients, protecting 3.3 V and 5 V logic interfaces downstream |
Applications
| Industrial Sensor Interface | Automotive CAN Bus Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors exposed to load dump and inductive switching noise in factory automation PLCs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across differential signal pair (e.g., 4–20 mA loop or RS-485 bus) to shunt surge energy before front-end amplifier. Use Value: Limits transient voltage to ≤13.6 V, preventing latch-up or gate oxide damage in precision op-amps and ADC drivers. |
Use Scenario: Safeguarding CANH/CANL pins of automotive ECUs against ISO 7637-2 pulse 1/2a/5a and ESD events per ISO 10605. IC Role / Device Role / Timing Role: Standoff-connected TVS on each CAN line, referenced to ground, leveraging symmetrical clamping to absorb common-mode and differential surges. Use Value: Maintains CAN signal integrity by clamping within ±13.6 V while preserving <50 µA leakage at 5 V nominal bus voltage. |
| Telecom Line Driver Protection | Consumer USB Port ESD Guard |
Use Scenario: Shielding xDSL or Ethernet PHY line drivers from lightning-induced surges entering via outdoor cabling in DSLAM or ONU equipment. IC Role / Device Role / Timing Role: Primary-level TVS mounted at connector entry point, upstream of common-mode chokes and transformer-coupled receivers. Use Value: Absorbs 600 W surge energy without degradation, ensuring >100,000 surge cycles per MIL-STD-883 Method 3015.7. |
Use Scenario: ESD suppression on USB 2.0 D+/D− lines in smart home hubs, where human-contact ports require IEC 61000-4-2 ±15 kV air/±8 kV contact discharge protection. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp placed directly at USB connector, minimizing trace length to reduce inductance. Use Value: Achieves sub-1 ns response time and clamps ESD pulses to <14 V, preventing data corruption or PHY reset in USB transceivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0CAHE3_A/I | Same electrical specs, but RoHS-compliant without halogen-free certification (E3 vs. M3) | Lacks halogen-free documentation required for some Tier 1 automotive OEMs | Select when halogen-free compliance is not mandated and cost optimization is prioritized |
| SMAJ8.0CAHM3_A/I | Lower 400 W PPPM, same VWM/VC, SMA (DO-214AC) package with smaller footprint and higher RθJA | Reduced surge margin; suitable only for lower-energy threat environments (e.g., IEC 61000-4-2 only) | Select when board space is constrained and surge requirements are limited to ESD-only protection |
Compared with SMBJ8.0CAHM3_A/I, the HE3 variant trades halogen-free assurance for broader commercial availability, while the SMAJ8.0CAHM3_A/I reduces surge rating and thermal performance to fit tighter layouts - neither is pin-compatible due to differing package outlines (SMB vs. SMA), requiring PCB redesign.
Availability
SMBJ8.0CAHM3_A/I is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive CAN bus nodes, and telecom line driver circuits requiring stable component supply with full AEC-Q101 traceability and halogen-free compliance.
Supply support for SMBJ8.0CAHM3_A/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 SMBJ series targets high-energy transient suppression in harsh environments, with design focus on automotive, industrial, and telecom infrastructure where long-term stability and surge endurance are critical.
FAQ
What is the breakdown voltage range for SMBJ8.0CAHM3_A/I?
The SMBJ8.0CAHM3_A/I has a guaranteed breakdown voltage (VBR) range of 6.4 V to 7.25 V at 10 mA test current, measured bidirectionally. This range ensures consistent clamping onset across production lots and temperature extremes, supporting reliable overvoltage detection in safety-critical circuits.
Is SMBJ8.0CAHM3_A/I suitable for automotive applications?
Yes, SMBJ8.0CAHM3_A/I is AEC-Q101 qualified (denoted by HM3 suffix) and rated for operation from –55 °C to +150 °C. Its halogen-free, RoHS-compliant construction and JESD201 Class 2 whisker resistance make it appropriate for automotive body control modules, infotainment interfaces, and powertrain subsystems.
What does the "CA" suffix mean in SMBJ8.0CAHM3_A/I?
The "CA" suffix in SMBJ8.0CAHM3_A/I indicates a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., SMBJ8.0AHM3_A/I), it has no cathode marking and functions identically regardless of terminal orientation.
How is SMBJ8.0CAHM3_A/I mounted and what are its thermal limitations?
SMBJ8.0CAHM3_A/I uses SMB (DO-214AA) surface-mount packaging with matte tin-plated leads. Its typical junction-to-ambient thermal resistance is 100 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal. Derating begins above 25 °C ambient, limiting continuous power dissipation to 5.0 W at 50 °C.
Does SMBJ8.0CAHM3_A/I meet any industry surge immunity standards?
SMBJ8.0CAHM3_A/I supports compliance with IEC 61000-4-5 (surge immunity) Level 4 (4 kV line-earth) when applied with proper PCB layout, including minimum 5.0 mm × 5.0 mm copper pads. Its 600 W peak pulse rating and ≤13.6 V clamping voltage enable robust protection against lightning-induced transients in industrial and telecom systems.
SMBJ8.0CAHM3_A/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:
- Obsolete
- 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):
- 44.1A
- Power - Peak Pulse:
- 600W
- 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)
SMBJ8.0CAHM3_A/I FAQ
1.How can I place an order for SMBJ8.0CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ8.0CAHM3_A/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 SMBJ8.0CAHM3_A/I reliable?
The price and inventory of SMBJ8.0CAHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ8.0CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ8.0CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ8.0CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ8.0CAHM3_A/I?
SMBJ8.0CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ8.0CAHM3_A/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 SMBJ8.0CAHM3_A/I?
For technical support, including SMBJ8.0CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ8.0CAHM3_A/I requirements.
6.How does Aetrix verify that SMBJ8.0CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ8.0CAHM3_A/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 SMBJ8.0CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ8.0CAHM3_A/I?
All SMBJ8.0CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ8.0CAHM3_A/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 SMBJ8.0CAHM3_A/I part is unused and in its original packaging.
Return procedure for SMBJ8.0CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ8.0CAHM3_A/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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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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