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Vishay General Semiconductor - Diodes Division SMBJ8.0AHM3_A/H
- Part No.:
- SMBJ8.0AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ8.0AHM3_A/H.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,224
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Product details
Overview
SMBJ8.0AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. It features 8.0 V stand-off voltage (VWM), 8.89–9.83 V breakdown voltage (VBR) at 10 mA, 13.6 V maximum clamping voltage (VC) at 44.1 A peak pulse current (IPPM), and 600 W peak pulse power rating with 10/1000 µs waveform - deployed on power rails and signal lines of industrial sensor interfaces.
For engineers reviewing the SMBJ8.0AHM3_A/H datasheet, SMBJ8.0AHM3_A/H pinout, SMBJ8.0AHM3_A/H application, or SMBJ8.0AHM3_A/H equivalent, this page delivers verified electrical parameters, thermal derating behavior, AEC-Q101 qualification status, halogen-free RoHS compliance, and real-world clamping performance under surge conditions - critical for automotive-grade ESD and load-dump protection design validation.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable avalanche response. Its 100 °C/W junction-to-ambient thermal resistance (RθJA) and 20 °C/W junction-to-lead (RθJL) define PCB pad layout requirements for sustained 5.0 W power dissipation at TA = 50 °C.
The SMBJ8.0AHM3_A/H meets J-STD-020 MSL Level 1 moisture sensitivity and supports reflow up to 260 °C peak. With 0.069 %/°C temperature coefficient of VBR and <1 μA reverse leakage at VWM, it maintains tight voltage tolerance across -55 °C to +150 °C operating junction range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - maximum continuous reverse operating voltage before conduction begins; sets safe margin below system rail voltage. |
| VBR min/max | 8.89 V / 9.83 V at IT = 10 mA - guaranteed avalanche onset window defining minimum clamping threshold. |
| VC @ IPPM | 13.6 V at 44.1 A - peak clamped voltage during 10/1000 µs surge; determines protected circuit's maximum transient exposure. |
| PPPM | 600 W - peak pulse power handling capability; defines survivability against IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | ≤1.0 μA - ultra-low reverse leakage ensures minimal standby power loss in battery-powered systems. |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments. |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height for automated placement. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; cathode identified by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-impedance return path; forms clamping loop with cathode during transient events. |
| Cathode | High-side connection point | Connected to protected line (e.g., 12 V supply or CAN_H); conducts avalanche current when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-event suppression of 1 kV/50 Ω IEC 61000-4-5 surges without degradation. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain and body electronics applications requiring zero-failure reliability. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements for green manufacturing. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without preconditioning or baking. |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamp |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump transients (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to clamp spikes >25 V within nanoseconds. Use Value: Limits voltage excursion to ≤13.6 V at 44.1 A, preventing damage to downstream LDOs and microcontrollers. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) from ESD and inductive switching noise in factory automation. IC Role / Device Role / Timing Role: TVS connected anode-to-signal, cathode-to-VCC to absorb positive transients on active-high outputs. Use Value: Sub-10 ns response time and <1 μA leakage preserve signal integrity and minimize offset error in precision measurement circuits. |
| Telecom DC Power Input Stage | Consumer USB Port Surge Guard |
|
Use Scenario: Safeguarding PoE-powered network switches against lightning-induced surges on 48 V DC input rails. IC Role / Device Role / Timing Role: Primary clamping element upstream of DC-DC converter, sized for 600 W pulse energy absorption. Use Value: 13.6 V clamping voltage prevents overvoltage stress on primary-side MOSFETs and gate drivers during fast-rising transients. |
Use Scenario: Adding secondary-level surge immunity to USB Type-A ports in smart home hubs exposed to user-handling ESD. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ ≈ 200 pF typical at 0 V) placed across VBUS/GND to shunt ±15 kV contact discharge. Use Value: Halogen-free construction and MSL Level 1 compatibility enable direct integration into consumer-grade SMT assembly lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0AHE3_A/H | RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification; same VWM/VBR/VC specs. | Approved for commercial-grade industrial equipment only; excluded from automotive production. | Select when halogen-free content and automotive qualification are not required. |
| SMBJ8.0CAHM3_A/H | Bidirectional variant with symmetrical VBR (±8.89–9.83 V); identical package and PPPM rating. | Suitable for AC-coupled or differential signal lines (e.g., RS-485, CAN) where polarity reversal occurs. | Choose for bidirectional protection needs; requires no polarity-aware layout but higher capacitance. |
Compared with SMBJ8.0AHM3_A/H, the HE3 variant trades halogen-free and automotive qualification for lower cost in non-automotive use, while the CAHM3 variant enables polarity-agnostic clamping at the expense of slightly higher junction capacitance - both require separate layout review due to differing polarity and symmetry constraints.
Availability
SMBJ8.0AHM3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor modules, and telecom power supplies requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ8.0AHM3_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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure modes must be mitigated without compromising signal fidelity or thermal stability.
FAQ
What is the maximum clamping voltage of SMBJ8.0AHM3_A/H under a 10/1000 µs surge?
The SMBJ8.0AHM3_A/H exhibits a maximum clamping voltage (VC) of 13.6 V when subjected to its rated peak pulse current of 44.1 A using the standardized 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88392 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ8.0AHM3_A/H achieves this clamping performance while maintaining low incremental surge resistance and sub-10 ns response time.
Is SMBJ8.0AHM3_A/H qualified for automotive applications?
Yes, SMBJ8.0AHM3_A/H is AEC-Q101 qualified, as confirmed by the HM3 suffix in its ordering code and explicit mention in the "Mechanical Data" section of Vishay document 88392. This qualification validates its reliability for automotive powertrain, body control, and infotainment systems operating across -55 °C to +150 °C. The SMBJ8.0AHM3_A/H also meets J-STD-020 MSL Level 1 and supports 260 °C peak reflow, fulfilling key manufacturing requirements for automotive-grade components.
What does the "HM3" suffix indicate in SMBJ8.0AHM3_A/H?
The "HM3" suffix in SMBJ8.0AHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification - distinguishing it from base E3 (RoHS only) and HE3 (RoHS + AEC-Q101, but not halogen-free) variants. Per Vishay's ordering information table, HM3 devices meet JESD201 Class 2 whisker resistance and UL 94 V-0 flammability standards. The SMBJ8.0AHM3_A/H thus satisfies stringent environmental and reliability mandates for modern automotive and industrial deployments.
How does SMBJ8.0AHM3_A/H compare to SMBJ8.0AHE3_A/H in terms of compliance?
SMBJ8.0AHM3_A/H adds halogen-free composition and retains AEC-Q101 qualification relative to SMBJ8.0AHE3_A/H, which is RoHS-compliant and AEC-Q101 qualified but contains halogens. Both share identical electrical specifications (VWM = 8.0 V, VC = 13.6 V, PPPM = 600 W), package (SMB), and thermal ratings. The SMBJ8.0AHM3_A/H is specified for applications requiring full green-material compliance - such as Tier 1 automotive suppliers adhering to VW 80101 or GMW17808 material restrictions - whereas the HE3 version serves general-purpose qualified designs.
What is the reverse leakage current specification for SMBJ8.0AHM3_A/H at its stand-off voltage?
The SMBJ8.0AHM3_A/H has a maximum reverse leakage current (ID) of 1.0 μA at its 8.0 V stand-off voltage (VWM), measured at TA = 25 °C. This ultra-low leakage ensures minimal power loss in always-on systems like automotive telematics or IoT edge sensors. The SMBJ8.0AHM3_A/H maintains this specification across its full operating temperature range (-55 °C to +150 °C), with leakage increasing predictably per thermal derating curves in Vishay document 88392 Figure 2.
SMBJ8.0AHM3_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:
- 1
- Bidirectional Channels:
- -
- 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)
SMBJ8.0AHM3_A/H FAQ
1.How can I place an order for SMBJ8.0AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ8.0AHM3_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 SMBJ8.0AHM3_A/H reliable?
The price and inventory of SMBJ8.0AHM3_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 SMBJ8.0AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ8.0AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ8.0AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ8.0AHM3_A/H?
SMBJ8.0AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ8.0AHM3_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 SMBJ8.0AHM3_A/H?
For technical support, including SMBJ8.0AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ8.0AHM3_A/H requirements.
6.How does Aetrix verify that SMBJ8.0AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ8.0AHM3_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 SMBJ8.0AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ8.0AHM3_A/H?
All SMBJ8.0AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ8.0AHM3_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 SMBJ8.0AHM3_A/H part is unused and in its original packaging.
Return procedure for SMBJ8.0AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ8.0AHM3_A/H Tags
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