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Vishay General Semiconductor - Diodes Division SMBJ10CAHM3/H
- Part No.:
- SMBJ10CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ10CAHM3/H.pdf
- Description:
- TVS DIODE 10VWM 17VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,374
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Product details
Overview
SMBJ10CAHM3/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 10 V stand-off voltage (VWM), 17.0 V maximum clamping voltage at 35.3 A peak pulse current (IPPM), and 600 W peak pulse power capability with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the SMBJ10CAHM3/H datasheet, SMBJ10CAHM3/H pinout, SMBJ10CAHM3/H application, or SMBJ10CAHM3/H equivalent, this device is selected for robust ESD and surge protection where bidirectional clamping, low clamping ratio (VC/VWM = 1.7), and AEC-Q101 qualification (via HM3 suffix) are required in space-constrained PCB layouts.
Technical Context
This TVS operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while the low incremental surge resistance supports fast energy dissipation during transient events.
The device complies with IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (surge) immunity standards when applied with appropriate layout practices. Thermal resistance (RθJA = 100 °C/W) and junction temperature range (–55 °C to +150 °C) support reliable operation in automotive under-hood and industrial control environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - maximum continuous reverse operating voltage before clamping begins; defines safe signal swing margin for protected line. |
| VBR min/max | 11.1 V / 12.3 V at IT = 1.0 mA - verified breakdown threshold ensuring predictable turn-on during overvoltage events. |
| VC @ IPPM | 17.0 V at 35.3 A - clamping voltage limits downstream component stress during 10/1000 µs surge; clamping ratio = 1.7. |
| PPPM | 600 W - peak transient power handling capacity per single 10/1000 µs pulse; enables protection against lightning-induced surges. |
| ID @ VWM | ≤1.0 µA - ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
| Package | SMB (DO-214AA) - surface-mount outline with 5.21 mm × 4.06 mm footprint and 2.20 mm height; compatible with automated placement. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22-A114. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; meets UL 94 V-0 flammability rating and J-STD-002 solderability requirements. No polarity marking on bidirectional variants - terminals are symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (during positive half-cycle) | One terminal of bidirectional junction; conducts when voltage exceeds +VBR relative to cathode. |
| Cathode | Transient current entry (during negative half-cycle) | Second terminal of bidirectional junction; conducts when voltage exceeds –VBR relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC, differential, or floating signal lines without external polarity management circuitry. |
| 600 W peak pulse power | Handles IEC 61000-4-5 Level 3 (1 kV open-circuit / 0.5 kA short-circuit) surges with margin when mounted per recommended pad layout. |
| Halogen-free & RoHS-compliant (HM3) | Meets environmental compliance requirements for automotive and industrial end-equipment without compromising thermal or electrical performance. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without moisture sensitivity concerns - no baking required prior to assembly. |
| Low clamping voltage (17.0 V) | Provides tighter overvoltage margin than comparable 12 V-rated TVS devices, reducing risk of damage to 12 V logic or interface ICs. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate drive signal lines from inductive kickback during MOSFET switching in 24 V DC motor controllers. IC Role / Device Role / Timing Role: Bidirectional TVS placed across gate-source terminals to clamp transient spikes before they exceed MOSFET VGS(max). Use Value: Prevents gate oxide damage and erratic switching by limiting transient voltage to ≤17.0 V, well below typical 20 V VGS(max) ratings. |
Use Scenario: Surge suppression on LIN bus lines connecting door modules and BCM in 12 V vehicle architectures. IC Role / Device Role / Timing Role: Bidirectional clamping element on LIN physical layer to absorb load dump and ESD events per ISO 10605. Use Value: Maintains LIN signal integrity during 8 kV contact ESD events and sustains operation after repeated 10/1000 µs surges up to 600 W. |
| Telecom Power Supply Inputs | Consumer Sensor Interface Boards |
|
Use Scenario: Input-stage protection for 12 V auxiliary rails feeding PoE-powered network switches and base stations. IC Role / Device Role / Timing Role: Primary transient suppressor on DC input before DC-DC converter, absorbing induced surges from nearby AC mains or lightning coupling. Use Value: Limits input rail overshoot to ≤17.0 V during 10/1000 µs surges, preventing latch-up or overvoltage shutdown of downstream regulators. |
Use Scenario: ESD protection for analog output lines of MEMS pressure sensors in smart home HVAC units. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector interface to shunt human-body-model (HBM) discharges before reaching ADC input. Use Value: Delivers <1.0 µA leakage at 10 V, preserving sensor offset accuracy while clamping 15 kV air-gap ESD per IEC 61000-4-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10CAHE3/H | RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification; same electrical specs and SMB package. | Approved for commercial/industrial use only; not certified for automotive production. | Select when halogen-free content or automotive qualification is not required, and cost optimization is prioritized. |
| SMAJ10CAHM3 | Lower PPPM (400 W vs. 600 W); SMA (DO-214AC) package with smaller footprint (4.5 mm × 2.7 mm) and higher RθJA (140 °C/W). | Suitable for lower-energy transients or space-constrained designs where 600 W margin is unnecessary. | Choose when board area is critical and surge threat level is limited to IEC 61000-4-4 EFT only - not recommended for lightning-level surges. |
Compared with SMBJ10CAHE3/H, SMBJ10CAHM3/H adds halogen-free composition and AEC-Q101 validation without sacrificing clamping performance; versus SMAJ10CAHM3, it delivers 50 % higher surge power handling and superior thermal dissipation in the larger SMB body - critical for sustained transient exposure.
Availability
SMBJ10CAHM3/H is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supply inputs requiring stable component supply, long-term lifecycle support, and AEC-Q101-qualified reliability.
Supply support for SMBJ10CAHM3/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 SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where robustness against ESD, EFT, and surge is non-negotiable.
FAQ
What does the "HM3" suffix indicate in SMBJ10CAHM3/H?
The "HM3" suffix in SMBJ10CAHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It confirms compliance with automotive reliability standards including temperature cycling, highly accelerated life testing, and electrostatic discharge immunity - distinguishing it from commercial-grade variants like SMBJ10CA-E3/H. This makes SMBJ10CAHM3/H suitable for under-hood and safety-critical automotive applications where material content and qualification are mandated.
How does SMBJ10CAHM3/H differ from unidirectional SMBJ10A variants?
SMBJ10CAHM3/H is bidirectional, meaning it clamps voltage transients equally in both polarities - essential for protecting AC-coupled, differential, or floating signal lines. In contrast, unidirectional SMBJ10A has a defined cathode band and only clamps in reverse bias; forward conduction follows standard diode behavior. SMBJ10CAHM3/H exhibits symmetric VBR (11.1 V to 12.3 V) and identical VC in both directions, whereas SMBJ10A's forward voltage drop (VF ≤ 3.5 V at 50 A) is irrelevant in SMBJ10CAHM3/H due to its symmetrical structure.
What is the maximum clamping voltage of SMBJ10CAHM3/H and how is it measured?
The maximum clamping voltage (VC) of SMBJ10CAHM3/H is 17.0 V, measured at a peak pulse current (IPPM) of 35.3 A using a standardized 10/1000 µs double-exponential surge waveform. This value is guaranteed per the Vishay datasheet under test conditions of TA = 25 °C and mounting on 0.2" × 0.2" copper pads. The low VC ensures downstream components such as 12 V logic ICs or microcontrollers remain within absolute maximum ratings during transient events - a key design advantage over higher-VC alternatives.
Can SMBJ10CAHM3/H be used in place of SMBJ10CAHE3/H?
Yes, SMBJ10CAHM3/H can replace SMBJ10CAHE3/H in most designs, as both share identical electrical characteristics (VWM = 10 V, VC = 17.0 V, PPPM = 600 W) and SMB package dimensions. However, SMBJ10CAHM3/H adds halogen-free composition and AEC-Q101 qualification - making it acceptable for automotive production where HE3 variants are not approved. No PCB layout changes are needed, but system-level validation for automotive qualification must still be performed per OEM requirements.
What is the thermal resistance and maximum junction temperature of SMBJ10CAHM3/H?
SMBJ10CAHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the recommended 0.2" × 0.2" copper pad per terminal, and a maximum junction temperature (TJ max.) of +150 °C. This allows continuous operation in ambient temperatures up to +85 °C while dissipating up to 5.0 W under steady-state conditions. The 150 °C TJ limit supports use in engine bay or industrial control cabinet environments where thermal management is constrained.
SMBJ10CAHM3/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):
- 35.3A
- 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)
SMBJ10CAHM3/H FAQ
1.How can I place an order for SMBJ10CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ10CAHM3/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 SMBJ10CAHM3/H reliable?
The price and inventory of SMBJ10CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ10CAHM3/H is usually 5 days.
3.What payment methods are accepted for SMBJ10CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ10CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ10CAHM3/H?
SMBJ10CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ10CAHM3/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 SMBJ10CAHM3/H?
For technical support, including SMBJ10CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ10CAHM3/H requirements.
6.How does Aetrix verify that SMBJ10CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ10CAHM3/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 SMBJ10CAHM3/H meets industry standards.
7.What is the process for return or replacement of SMBJ10CAHM3/H?
All SMBJ10CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ10CAHM3/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 SMBJ10CAHM3/H part is unused and in its original packaging.
Return procedure for SMBJ10CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ10CAHM3/H Tags
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