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Vishay General Semiconductor - Diodes Division SMAJ10AHM3_A/H
- Part No.:
- SMAJ10AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ10AHM3_A/H.pdf
- Description:
- TVS DIODE 10VWM 17VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,190
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Product details
Overview
SMAJ10AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features 11.1 V minimum breakdown voltage (VBR), 17.0 V maximum clamping voltage (VC) at 23.5 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 μs waveform), making it suitable for protecting MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMAJ10AHM3_A/H datasheet, SMAJ10AHM3_A/H pinout, SMAJ10AHM3_A/H application, or SMAJ10AHM3_A/H equivalent, key selection criteria include its 10 V standoff voltage (VWM), low 1.0 μA reverse leakage at VWM, AEC-Q101 qualification, halogen-free RoHS-compliant construction, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging a glass-passivated silicon junction for fast response (<1 ps) and stable surge handling. Its thermal resistance (RθJA = 120 °C/W) and junction temperature limit (TJ = 150 °C) support reliable operation under repetitive transient stress when mounted on 0.2" × 0.2" copper pads.
The SMAJ10AHM3_A/H delivers 400 W peak pulse power up to 78 V and derates to 300 W above that threshold, with a temperature coefficient of VBR at +0.078 %/°C. It meets MSL Level 1 per J-STD-020 and passes JESD201 Class 2 whisker testing, confirming suitability for high-reliability commercial and automotive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 11.1 V / 12.3 V at 1.0 mA - Ensures predictable turn-on within tight tolerance for precise overvoltage protection |
| VC @ IPPM | 17.0 V at 23.5 A - Limits downstream voltage during 10/1000 μs surge, safeguarding 15 V-rated components |
| IPPM | 23.5 A - Peak surge current capacity compatible with common automotive load-dump and ESD test profiles |
| PPPM | 400 W (≤78 V), 300 W (>78 V) - Sustains high-energy transients without degradation under defined duty cycle (0.01 %) |
| Package | SMA (DO-214AC) - Low-profile, surface-mount package optimized for automated assembly and board space efficiency |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
Pinout & Package
Package: SMA (DO-214AC), molded epoxy case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102; cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional clamp configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 12 V rail or signal trace); conducts during overvoltage to shunt surge to ground |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Enables robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges without derating in standard layouts |
| Glass passivated chip junction | Ensures stable VBR and low leakage over lifetime, critical for long-term reliability in sealed automotive modules |
| AEC-Q101 qualified (HM3 suffix) | Confirms compliance with automotive stress tests including HTGB, AC-H3TRB, and temperature cycling for engine bay use |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declarations for sustainable electronics manufacturing |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without preconditioning, reducing production complexity and moisture-related defects |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Suppresses load-dump transients (up to 60 V, 400 ms) on 12 V battery-fed ECUs in passenger vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp overvoltage before it reaches LDOs and microcontrollers. Use Value: Limits voltage to ≤17.0 V during 23.5 A surge, preventing latch-up or gate oxide damage in downstream 16 V-tolerant regulators. |
Use Scenario: Shields analog output lines (e.g., 4–20 mA current loops) from ESD and inductive switching noise in factory automation PLCs. IC Role / Device Role / Timing Role: Fast-clamping TVS connected across signal and return paths to absorb ±8 kV contact ESD per IEC 61000-4-2. Use Value: Sub-nanosecond response ensures clamping occurs before sensitive op-amps or ADC inputs experience overstress. |
| Consumer Device USB Port Protection | Telecom Power Supply Input Protection |
|
Use Scenario: Guards VBUS line in USB 2.0 host ports against hot-plug overshoot and cable-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS (VWM = 10 V) placed upstream of USB switch ICs to avoid false triggering during nominal 5 V operation. Use Value: 1.0 μA leakage at 10 V prevents measurable loading on USB power delivery circuits while enabling 17 V clamping. |
Use Scenario: Protects primary-side rectifier inputs in telecom AC/DC adapters exposed to lightning-induced surges on AC mains. IC Role / Device Role / Timing Role: Secondary-stage TVS used after MOVs to handle residual fast-rising transients that bypass bulk suppression. Use Value: 400 W rating complements upstream MOVs by absorbing energy not captured in slower 8/20 μs events, improving system-level immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10AHE3_A/H | RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification | Suitable for commercial-grade consumer or industrial equipment where automotive qualification is unnecessary | Select when cost sensitivity outweighs halogen-free or automotive requirements |
| SMAJ10A-M3/61 (Vishay) | Same electrical specs; packaged in 7" tape/reel but with different ordering code and no AEC-Q101 or halogen-free designation | Intended for general-purpose SMT production without automotive or green-material mandates | Choose for legacy BOM alignment or non-automotive volume production with standard RoHS compliance |
Compared with SMAJ10AHM3_A/H, the HE3 variant trades halogen-free construction and AEC-Q101 validation for lower cost in commercial applications, while the M3/61 offers identical performance without formal qualification-making SMAJ10AHM3_A/H the only option meeting full automotive and environmental compliance simultaneously.
Availability
SMAJ10AHM3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power supply designs requiring stable component supply with guaranteed halogen-free and AEC-Q101-compliant sourcing.
Supply support for SMAJ10AHM3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMAJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where robustness against ESD, load dump, and lightning surges is mission-critical.
FAQ
What is the clamping voltage of SMAJ10AHM3_A/H at its rated peak pulse current?
The SMAJ10AHM3_A/H has a maximum clamping voltage (VC) of 17.0 V at its rated peak pulse current (IPPM) of 23.5 A under a 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 SMAJ10AHM3_A/H maintains this clamping performance across its qualified temperature range (−55 °C to +150 °C).
Is SMAJ10AHM3_A/H suitable for automotive applications?
Yes, SMAJ10AHM3_A/H is AEC-Q101 qualified and specifically designated for automotive use via its HM3 suffix. It undergoes rigorous stress testing-including high-temperature reverse bias, temperature cycling, and ESD-to ensure reliability in engine control, body electronics, and ADAS modules. The SMAJ10AHM3_A/H also meets MSL Level 1 and JESD201 Class 2 whisker requirements for automotive SMT assembly.
How does the halogen-free construction of SMAJ10AHM3_A/H impact its environmental compliance?
The SMAJ10AHM3_A/H uses halogen-free molding compound and matte tin-plated leads, satisfying IPC-1752A material declarations and regional green directives such as China RoHS II and JEITA EG02. This eliminates brominated flame retardants (BFRs) and chlorinated compounds, reducing toxic emissions during PCB recycling or incineration-without compromising UL 94 V-0 flammability rating or electrical performance.
What is the standoff voltage rating for SMAJ10AHM3_A/H, and why is it important?
The SMAJ10AHM3_A/H has a standoff voltage (VWM) of 10 V, meaning it remains non-conductive under normal operating conditions up to this DC or RMS voltage. This allows integration into 12 V automotive systems or 5 V/3.3 V logic interfaces without leakage-induced power loss or false triggering. Its 1.0 μA max reverse leakage at VWM ensures minimal impact on low-power sensor or communication circuits.
Can SMAJ10AHM3_A/H be used in bidirectional configurations?
No, SMAJ10AHM3_A/H is a unidirectional TVS diode, identified by its cathode band marking and specified breakdown behavior in one polarity only. For bidirectional protection, Vishay offers the SMAJ10CA family (e.g., SMAJ10CAHM3_A/H). Using SMAJ10AHM3_A/H in reverse-biased configurations risks permanent damage due to lack of symmetrical avalanche capability-always verify polarity alignment during PCB layout.
SMAJ10AHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 23.5A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
SMAJ10AHM3_A/H FAQ
1.How can I place an order for SMAJ10AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ10AHM3_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 SMAJ10AHM3_A/H reliable?
The price and inventory of SMAJ10AHM3_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 SMAJ10AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMAJ10AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ10AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ10AHM3_A/H?
SMAJ10AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ10AHM3_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 SMAJ10AHM3_A/H?
For technical support, including SMAJ10AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ10AHM3_A/H requirements.
6.How does Aetrix verify that SMAJ10AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMAJ10AHM3_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 SMAJ10AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMAJ10AHM3_A/H?
All SMAJ10AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ10AHM3_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 SMAJ10AHM3_A/H part is unused and in its original packaging.
Return procedure for SMAJ10AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ10AHM3_A/H Tags
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