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Vishay General Semiconductor - Diodes Division SMB10J8.0AHM3/H
- Part No.:
- SMB10J8.0AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J8.0AHM3/H.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,270
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Product details
Overview
SMB10J8.0AHM3/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 8.0 V stand-off voltage (VWM), 8.89–9.83 V breakdown voltage (VBR) at 1 mA, 13.6 V clamping voltage (VC) at 73.5 A peak pulse current, and 1000 W peak pulse power (10/1000 µs waveform), qualified to AEC-Q101 for automotive use.
For engineers reviewing the SMB10J8.0AHM3/H datasheet, SMB10J8.0AHM3/H pinout, SMB10J8.0AHM3/H application, or SMB10J8.0AHM3/H equivalent, this device is selected for robust overvoltage protection in automotive ECUs, industrial sensor interfaces, and 12 V supply rail conditioning where low clamping voltage, fast response (<1 ns), and halogen-free RoHS compliance are required.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ leakage at 8.0 V), then rapidly avalanches below 1 ns to divert transients up to 1000 W away from downstream ICs. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
Designed for surface-mount automated assembly, SMB10J8.0AHM3/H meets J-STD-020 MSL Level 1 (260 °C peak reflow), supports 100 A non-repetitive forward surge (8.3 ms half-sine), and maintains operation across -55 °C to +150 °C junction temperature range with 72 °C/W junction-to-ambient thermal resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before conduction begins; sets minimum system operating margin. |
| VBR (min/max) | 8.89 V / 9.83 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering above nominal rail. |
| VC @ IPPM | 13.6 V at 73.5 A - Clamped voltage during 1000 W transient; defines maximum stress on protected circuitry. |
| PPPM | 1000 W (10/1000 µs) - Peak surge energy handling capacity; validates suitability for ISO 7637-2 Pulse 1/2a/5a. |
| IFSM | 100 A (8.3 ms half-sine) - Forward surge rating; supports load-dump immunity in automotive 12 V systems. |
| TJ max | +150 °C - Maximum junction temperature; enables placement near heat sources in engine control modules. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, matte tin-plated leads, JEDEC-compliant footprint (5.0 mm × 3.94 mm body, 2.20 mm height). Cathode indicated by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lower-potential node; completes shunt path during transient events. |
| Cathode | High-side input terminal | Connected to protected line (e.g., 12 V rail); conducts avalanche current when VIN exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free & RoHS-compliant | HM3 suffix confirms full compliance per IEC 61249-2-21; eliminates toxic emissions during PCB reflow and end-of-life disposal. |
| AEC-Q101 qualification | Validated for automotive underhood applications including temperature cycling (-40 °C to +125 °C), HTRB, and ESD (HBM ≥ 8 kV). |
| Low clamping ratio (VC/VWM = 1.7) | 13.6 V clamp at 8.0 V stand-off provides tight voltage margin for 12 V systems with ±10 % tolerance. |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking; compatible with high-throughput automated assembly lines. |
| Glass-passivated junction | Ensures stable VBR over lifetime and improved resistance to humidity-induced parameter drift. |
Applications
| Automotive Body Control Module (BCM) | Industrial CAN Transceiver Protection |
|---|---|
|
Use Scenario: Protecting 12 V power input of BCM microcontroller and peripheral drivers from load dump and jump-start surges. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly at power entry point, clamping spikes within nanoseconds. Use Value: Limits voltage seen by downstream LDOs and MCU to ≤13.6 V, preventing latch-up and permanent damage during ISO 16750-2 Pulse 5a events. |
Use Scenario: Safeguarding CANH/CANL pins of isolated transceivers against ESD and inductive switching noise in factory automation nodes. IC Role / Device Role / Timing Role: Bidirectional-capable variant not used here; unidirectional SMB10J8.0AHM3/H protects VCC rail feeding transceiver bias circuitry. Use Value: Maintains CAN bus integrity by preventing rail collapse during 4 kV ESD contact discharge (IEC 61000-4-2), thanks to sub-1 ns response and 1000 W surge rating. |
| Consumer Appliance Motor Drive Board | Telecom Power Supply Input Stage |
|
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in smart washing machine control boards. IC Role / Device Role / Timing Role: Parallel-connected TVS on motor driver VDD rail, triggered only during commutation transients. Use Value: Absorbs 1000 W pulses without degradation, enabling use of cost-effective MOSFETs with lower VDSS ratings while maintaining >100,000-cycle reliability. |
Use Scenario: Front-end protection of AC/DC adapter secondary-side 12 V output feeding baseband processor in 5G small cell units. IC Role / Device Role / Timing Role: Final-stage rail clamp after bulk filtering, intercepting residual surges escaping primary-side MOVs. Use Value: Reduces need for oversized output capacitors by limiting overshoot to 13.6 V, improving dynamic regulation and reducing BOM cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0AHE3/A | Same VWM, VBR, VC, PPPM; RoHS-compliant but not halogen-free; commercial grade (no AEC-Q101). | Lacks automotive qualification; suitable for industrial/commercial power supplies where AEC-Q101 is not mandated. | Select when halogen-free content and automotive qualification are not required; lower cost alternative with identical electrical specs. |
| SMAJ8.0A-HM3 | Lower PPPM (400 W), smaller SMA package (DO-214AC); same VWM/VBR range and HM3 halogen-free marking. | Insufficient for ISO 7637-2 Pulse 5a; limited to lower-energy transients like ESD or relay bounce. | Choose only for space-constrained designs accepting reduced surge margin; not drop-in for 1000 W requirements. |
Compared with SMB10J8.0AHM3/H, SMBJ8.0AHE3/A offers identical clamping performance without halogen-free or automotive validation, while SMAJ8.0A-HM3 trades 60 % lower surge rating for 30 % smaller footprint-neither is pin-compatible due to differing package outlines (SMB vs. SMA), requiring PCB redesign.
Availability
SMB10J8.0AHM3/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interface modules, and telecom power supply input stages requiring stable component supply, long-term lifecycle support, and AEC-Q101 assurance.
Supply support for SMB10J8.0AHM3/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, efficiency, and application-specific optimization.
The SMB10J series targets high-power transient suppression in harsh environments; its design prioritizes low clamping voltage, automotive qualification, and compatibility with automated SMT processes for mission-critical power rail protection.
FAQ
What is the clamping voltage of SMB10J8.0AHM3/H at its rated peak pulse current?
The SMB10J8.0AHM3/H has a maximum clamping voltage (VC) of 13.6 V when subjected to its specified peak pulse current of 73.5 A (10/1000 µs waveform). This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The SMB10J8.0AHM3/H maintains this clamping performance consistently across its qualified temperature range and lifetime, supporting robust design margins in 12 V automotive and industrial systems.
Is SMB10J8.0AHM3/H suitable for protecting CAN bus lines directly?
No - SMB10J8.0AHM3/H is a unidirectional TVS diode optimized for DC power rail protection, not bidirectional signal-line clamping. For direct CANH/CANL protection, a bidirectional variant such as SMB8J8.0CAHM3/H (with symmetrical breakdown) is required. Using SMB10J8.0AHM3/H on CAN lines would block one polarity of normal differential signaling. The SMB10J8.0AHM3/H is correctly applied to the 5 V or 12 V bias rail supplying the CAN transceiver, not the data lines themselves.
Does SMB10J8.0AHM3/H meet automotive qualification standards?
Yes - SMB10J8.0AHM3/H carries the HM3 suffix and is explicitly qualified to AEC-Q101, covering stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD (HBM ≥ 8 kV). This qualification is documented in Vishay's official specification document 88422 (Rev. 09-Jan-2024) and confirmed via the "HM3_X" ordering code format. The SMB10J8.0AHM3/H is approved for under-hood and body-control applications where extended temperature operation and long-term reliability are mandatory.
What is the thermal resistance of SMB10J8.0AHM3/H, and how does it affect layout?
The SMB10J8.0AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimal PCB copper; increasing pad area or adding thermal vias reduces effective RθJA. For repeated surge events, thermal management is critical - layouts must provide adequate copper pour and avoid isolation that impedes heat dissipation, especially in automotive modules operating up to +125 °C ambient.
How does the HM3 suffix differ from the M3 suffix in Vishay TVS diodes?
The HM3 suffix in SMB10J8.0AHM3/H denotes halogen-free, RoHS-compliant, and AEC-Q101-qualified construction, whereas M3 indicates halogen-free and RoHS-compliant but commercial-grade (non-automotive) parts. The "H" prefix in HM3 explicitly signals automotive qualification, verified through full AEC-Q101 test suites. Both share identical electrical parameters and packaging, but only HM3-labeled devices like SMB10J8.0AHM3/H are authorized for use in automotive safety-critical or under-hood applications per OEM requirements.
SMB10J8.0AHM3/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:
- Discontinued at Digi-Key
- 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):
- 73.5A
- Power - Peak Pulse:
- 1000W (1kW)
- 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)
SMB10J8.0AHM3/H FAQ
1.How can I place an order for SMB10J8.0AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J8.0AHM3/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 SMB10J8.0AHM3/H reliable?
The price and inventory of SMB10J8.0AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J8.0AHM3/H is usually 5 days.
3.What payment methods are accepted for SMB10J8.0AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J8.0AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J8.0AHM3/H?
SMB10J8.0AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J8.0AHM3/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 SMB10J8.0AHM3/H?
For technical support, including SMB10J8.0AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J8.0AHM3/H requirements.
6.How does Aetrix verify that SMB10J8.0AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMB10J8.0AHM3/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 SMB10J8.0AHM3/H meets industry standards.
7.What is the process for return or replacement of SMB10J8.0AHM3/H?
All SMB10J8.0AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J8.0AHM3/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 SMB10J8.0AHM3/H part is unused and in its original packaging.
Return procedure for SMB10J8.0AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J8.0AHM3/H Tags
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