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Vishay General Semiconductor - Diodes Division SMB8J10CAHM3/H
- Part No.:
- SMB8J10CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J10CAHM3/H.pdf
- Description:
- TVS DIODE 10VWM 17VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,840
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Product details
Overview
SMB8J10CAHM3/H 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 10 V stand-off voltage (VWM), 17.0 V maximum clamping voltage (VC) at 10 A peak pulse current, and 800 W peak pulse power dissipation (10/1000 µs waveform), with AEC-Q101 qualification for automotive use.
For engineers reviewing the SMB8J10CAHM3/H datasheet, SMB8J10CAHM3/H pinout, SMB8J10CAHM3/H application, or SMB8J10CAHM3/H equivalent, this device is selected for robust ESD and lightning surge protection in automotive sensor interfaces, industrial I/O modules, and telecom line drivers where low clamping voltage, fast response (<1 ns), and halogen-free RoHS compliance are critical.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction delivers stable breakdown behavior and low incremental surge resistance, supporting reliable clamping under repetitive transients up to 150 °C junction temperature.
The device meets MSL level 1 per J-STD-020 with 260 °C reflow peak, and its 72 °C/W junction-to-ambient thermal resistance requires minimum 0.2" × 0.2" copper pads for rated 800 W pulse handling. It is not a voltage regulator or rectifier - it functions exclusively as a crowbar-type overvoltage clamp during transient events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC signal swing range. |
| VBR min/max | 11.1 V / 12.3 V at 1.0 mA - Verified breakdown threshold ensures predictable turn-on margin above VWM. |
| VC @ IPPM | 17.0 V at 10 A - Clamping voltage under 10/1000 µs surge; limits downstream IC stress to safe levels. |
| PPPM | 800 W - Peak pulse power rating determines survivability against IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source). |
| ID @ VWM | 1.0 µA - Ultra-low leakage preserves signal integrity in high-impedance sensor or data lines. |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and industrial enclosures without derating. |
| Package | SMB (DO-214AA) - Surface-mount outline with 2.2 mm height; compatible with automated pick-and-place and reflow. |
Pinout & Package
SMB8J10CAHM3/H uses the standard SMB (DO-214AA) two-terminal surface-mount package. No polarity marking is present, consistent with bidirectional construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; surge current flows bidirectionally through the same junction structure. |
| Case (exposed cathode pad) | Thermal and mechanical anchor | Not electrically connected; provides thermal path to PCB copper and mechanical stability during board flex. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units, ADAS sensors, and infotainment interfaces. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets EU Directive 2011/65/EU and JEDEC J-STD-201 Class 2 whisker resistance requirements. |
| Low clamping ratio (VC/VBR ≈ 1.43) | Minimizes voltage overshoot during fast transients, reducing risk of gate oxide damage in protected MOSFETs. |
| MSL Level 1 moisture sensitivity | Enables standard SMT assembly without dry-pack or baking; supports high-volume manufacturing flow. |
| Glass-passivated junction | Ensures long-term parameter stability and resistance to humidity-induced degradation in harsh environments. |
Applications
| Automotive Sensor Protection | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN FD or LIN bus transceivers from load dump and ISO 7637-2 pulses in vehicle body control modules. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface to shunt surge energy before reaching transceiver input pins. Use Value: Maintains 10 V working voltage while clamping to 17.0 V, preventing latch-up in 3.3 V/5 V transceivers during 100 A surge events. |
Use Scenario: Safeguarding PLC analog input channels (e.g., 4–20 mA loops) against field-wiring induced surges and ESD. IC Role / Device Role / Timing Role: Primary front-end TVS on terminal block side, coordinated with series impedance and secondary filtering. Use Value: 800 W rating handles IEC 61000-4-5 combination wave (2 Ω/12 Ω) without degradation; 1.0 µA leakage avoids measurement drift. |
| Telecom Line Driver Protection | Consumer USB Port ESD Suppression |
Use Scenario: Shielding RS-485 transceivers in base station remote units exposed to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Differential-mode TVS across A/B lines, leveraging symmetrical clamping to preserve common-mode rejection. Use Value: 17.0 V VC ensures receiver inputs stay within absolute maximum ratings even during 4 kV contact discharge events. |
Use Scenario: Board-level ESD protection for USB 2.0 data lines (D+/D−) in automotive infotainment head units. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp placed adjacent to USB connector to meet IEC 61000-4-2 ±15 kV air/±8 kV contact. Use Value: Sub-1 nF junction capacitance (per Vishay typical curve Fig. 4) avoids signal integrity loss at 480 Mbps full-speed operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J10CAHE3/H | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs HM3). | Lacks halogen-free certification; acceptable for commercial, non-automotive applications. | Select when halogen-free requirement is waived and cost optimization is prioritized. |
| SMAJ10CA | Lower PPPM (400 W), larger SMA package (DO-214AC), higher RθJA (95 °C/W). | Insufficient for IEC 61000-4-5 Level 4; requires larger PCB area and thermal relief. | Choose only for space-constrained legacy layouts where 400 W rating suffices and AEC-Q101 is not required. |
Compared with SMB8J10CAHM3/H, SMB8J10CAHE3/H offers identical protection performance without halogen-free assurance, while SMAJ10CA trades power handling and thermal efficiency for footprint compatibility - making SMB8J10CAHM3/H the optimal choice for new AEC-Q101-compliant designs demanding 800 W surge resilience.
Availability
SMB8J10CAHM3/H is available at Aetrix Electronics and suitable for automotive electronics, industrial programmable logic controllers, and telecom infrastructure requiring stable component supply with full traceability and lifecycle management.
Supply support for SMB8J10CAHM3/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade validation.
The SMB8JxxCA series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power, bidirectional surge suppression in AEC-Q101-certified automotive and industrial systems.
FAQ
What is the clamping voltage of SMB8J10CAHM3/H at its rated peak pulse current?
The SMB8J10CAHM3/H has a maximum clamping voltage (VC) of 17.0 V when subjected to its specified peak pulse current of 10 A using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and ensures downstream circuitry remains within safe operating limits during surge events. The SMB8J10CAHM3/H maintains this clamping performance across its full operating temperature range of -55 °C to +150 °C.
Is SMB8J10CAHM3/H suitable for automotive applications?
Yes, SMB8J10CAHM3/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction - meeting stringent automotive reliability and environmental requirements. It is explicitly rated for under-hood and chassis-mounted applications with junction temperatures up to +150 °C and validated for surge immunity per ISO 7637-2 and IEC 61000-4-5. The SMB8J10CAHM3/H is commonly deployed in ADAS camera modules and body control units.
How does the bidirectional configuration of SMB8J10CAHM3/H affect its circuit placement?
The SMB8J10CAHM3/H has no polarity marking and conducts identically in both directions, allowing direct placement across differential signal pairs (e.g., RS-485 A/B) or AC-coupled lines without orientation concerns. Unlike unidirectional TVS diodes, it eliminates the need for series blocking diodes or careful anode/cathode alignment. This symmetry simplifies layout and improves protection consistency in bidirectional communication interfaces protected by SMB8J10CAHM3/H.
What is the thermal resistance of SMB8J10CAHM3/H, and how does it impact PCB layout?
SMB8J10CAHM3/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. To sustain its 800 W peak pulse rating, the PCB must provide adequate copper area and thermal vias - undersized pads cause excessive junction heating and premature failure. The SMB8J10CAHM3/H datasheet specifies exact pad dimensions in inches/mm to ensure compliance with its thermal derating curve (Fig. 2).
Does SMB8J10CAHM3/H require additional series impedance for effective protection?
Yes, SMB8J10CAHM3/H should be used with upstream current-limiting impedance (e.g., ferrite bead or resistor) to manage let-through energy and coordinate with downstream protection elements like ESD diodes or IC input structures. While SMB8J10CAHM3/H clamps rapidly (<1 ns), its 17.0 V VC still exceeds most IC absolute maximum ratings - series impedance reduces peak current into the protected device. This coordination is essential in USB, CAN, or sensor interface designs using SMB8J10CAHM3/H.
SMB8J10CAHM3/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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 47.1A
- 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)
SMB8J10CAHM3/H FAQ
1.How can I place an order for SMB8J10CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J10CAHM3/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 SMB8J10CAHM3/H reliable?
The price and inventory of SMB8J10CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J10CAHM3/H is usually 5 days.
3.What payment methods are accepted for SMB8J10CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J10CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J10CAHM3/H?
SMB8J10CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J10CAHM3/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 SMB8J10CAHM3/H?
For technical support, including SMB8J10CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J10CAHM3/H requirements.
6.How does Aetrix verify that SMB8J10CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMB8J10CAHM3/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 SMB8J10CAHM3/H meets industry standards.
7.What is the process for return or replacement of SMB8J10CAHM3/H?
All SMB8J10CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J10CAHM3/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 SMB8J10CAHM3/H part is unused and in its original packaging.
Return procedure for SMB8J10CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J10CAHM3/H Tags
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