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Vishay General Semiconductor - Diodes Division SMAJ5.0CAHM3_A/H
- Part No.:
- SMAJ5.0CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ5.0CAHM3_A/H.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,156
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Product details
Overview
SMAJ5.0CAHM3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection on signal and power lines. It features a 5.0 V stand-off voltage (VWM), 6.40–7.07 V breakdown voltage (VBR) at 10 mA, 400 W peak pulse power (10/1000 μs), and clamps transients to ≤9.2 V at 43.5 A, making it suitable for protecting sensitive MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMAJ5.0CAHM3_A/H datasheet, SMAJ5.0CAHM3_A/H pinout, SMAJ5.0CAHM3_A/H application, or SMAJ5.0CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMA (DO-214AC) package compatibility, and compliance with UL 497B for telecom and automotive surge protection standards.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (<1 μA leakage at 5.0 V), but triggers into low-impedance conduction when reverse or forward transients exceed its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance and fast response time (<1 ns), critical for suppressing ESD and inductive switching spikes.
The SMAJ5.0CAHM3_A/H is rated for repetitive 10/1000 μs surges at 0.01% duty cycle (400 W up to 78 V; derated to 300 W above), with thermal resistance RθJA = 120 °C/W and maximum junction temperature of +150 °C - enabling reliable operation on standard 5.0 mm × 5.0 mm copper pads without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - maximum continuous reverse operating voltage before significant leakage begins |
| VBR min/max | 6.40 V / 7.07 V at 10 mA - tight breakdown window ensures predictable turn-on across temperature and unit variation |
| VC @ IPPM | ≤9.2 V at 43.5 A - clamping voltage defines worst-case stress imposed on protected circuitry during surge |
| PPPM | 400 W (10/1000 μs) - peak transient energy handling capacity under standardized surge waveform |
| ID @ VWM | ≤800 μA - low leakage preserves signal integrity and minimizes standby power loss |
| TJ max. | +150 °C - enables use in under-hood automotive and high-ambient industrial environments |
| Package | SMA (DO-214AC) - surface-mount footprint compatible with automated assembly and IPC-7351B land patterns |
Pinout & Package
Two-terminal bidirectional device housed in SMA (DO-214AC) package; no polarity marking required. Terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, with MSL Level 1 rating (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (reverse bias) | Conducts during negative-going transients; connects to line being protected |
| Cathode | Transient current entry (forward bias) | Conducts during positive-going transients; connects to line being protected |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| UL 497B recognized (QVGQ2) | Meets safety requirements for telecom and data line protectors in certified end equipment |
| Halogen-free & RoHS-compliant (HM3) | Supports environmental compliance mandates for industrial and consumer OEM production |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD, relay bounce) |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt TVS device placed between signal line and ground to clamp transients before they reach the IC input stage. Use Value: Prevents latch-up or permanent damage to automotive-grade microcontrollers and interface ICs during vehicle battery disconnection events. | Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against inductive kickback from solenoid valves and contactors. IC Role / Device Role / Timing Role: Bidirectional voltage clamp installed across input terminals to absorb repetitive 400 W surges without degradation. Use Value: Extends field reliability of PLC hardware by eliminating false triggering and component failure due to industrial switching noise. |
| Consumer Power Adapter Protection | Telecom Line Interface Protection |
Use Scenario: Guarding USB-C PD port and auxiliary power rails in wall adapters against ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS placed at AC/DC front-end and secondary-side DC outputs to meet IEC 61000-4-2/4-5 immunity requirements. Use Value: Enables compact adapter designs with UL 497B recognition while maintaining >10 kV contact ESD robustness. | Use Scenario: Protecting Ethernet PHYs and DSL line drivers from induced surges on twisted-pair telecom lines exposed to outdoor environments. IC Role / Device Role / Timing Role: Bidirectional suppressor mounted differential-mode across line pairs to limit common-mode and differential-mode transients. Use Value: Maintains signal integrity and bit-error rate performance under ITU-T K.21 basic surge test conditions (10/700 μs, 1 kV). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0CAHE3_A/H | RoHS-compliant, commercial-grade variant without halogen-free certification; same electrical specs and AEC-Q101 qualification | Approved for non-automotive industrial and computing applications where halogen-free material is not mandated | Select when cost sensitivity outweighs halogen-free requirement and automotive qualification is still needed |
| SMBJ5.0CAHM3_A/H | Same VWM/VBR/VC ratings but in SMB (DO-214AA) package - 25% larger footprint and 10% higher thermal resistance (RθJA = 135 °C/W) | Better suited for higher-power derating scenarios or legacy PCB layouts requiring SMB pad geometry | Choose only if existing layout uses SMB pads or thermal margin requires lower power density |
Compared with SMAJ5.0CAHE3_A/H and SMBJ5.0CAHM3_A/H, the SMAJ5.0CAHM3_A/H uniquely combines halogen-free construction, AEC-Q101 qualification, and minimal SMA footprint - optimizing board space, regulatory compliance, and automotive-grade reliability in one device.
Availability
SMAJ5.0CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMAJ5.0CAHM3_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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMAJ series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness against ESD, lightning, and inductive switching is mission-critical.
FAQ
What is the clamping voltage of SMAJ5.0CAHM3_A/H at its rated peak pulse current?
The SMAJ5.0CAHM3_A/H has a maximum clamping voltage (VC) of 9.2 V at its peak pulse current (IPPM) of 43.5 A, measured under the standardized 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is confirmed in Vishay's datasheet revision 09-Jan-2024, page 2, electrical characteristics table.
Is SMAJ5.0CAHM3_A/H qualified for automotive applications?
Yes, SMAJ5.0CAHM3_A/H is AEC-Q101 qualified, as indicated by the "HM3" suffix and explicitly stated in the mechanical data section of the Vishay datasheet. This qualification validates its suitability for automotive powertrain, chassis, and body electronics where reliability under temperature cycling, humidity, and mechanical shock is mandatory.
Does SMAJ5.0CAHM3_A/H have polarity markings on the package?
No, SMAJ5.0CAHM3_A/H is a bidirectional TVS diode and carries no polarity marking on the SMA (DO-214AC) case. Unlike unidirectional variants (e.g., SMAJ5.0A), it functions identically in both directions and is installed without orientation constraints - simplifying placement and reducing assembly errors.
What is the maximum junction temperature rating for SMAJ5.0CAHM3_A/H?
The SMAJ5.0CAHM3_A/H has a maximum junction temperature (TJ max.) of +150 °C, specified in the "Maximum Ratings" table on page 1 of the Vishay datasheet. This rating supports operation in under-hood automotive environments and high-ambient industrial enclosures without thermal derating below rated power.
How does the halogen-free designation affect SMAJ5.0CAHM3_A/H's compliance status?
The "HM3" suffix in SMAJ5.0CAHM3_A/H certifies it as halogen-free, RoHS-compliant, and AEC-Q101 qualified - satisfying EU RoHS Directive 2011/65/EU Annex II substance restrictions and automotive OEM material declarations. This distinguishes it from the HE3 variant, which lacks halogen-free verification despite sharing AEC-Q101 qualification.
SMAJ5.0CAHM3_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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 43.5A
- 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)
SMAJ5.0CAHM3_A/H FAQ
1.How can I place an order for SMAJ5.0CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ5.0CAHM3_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 SMAJ5.0CAHM3_A/H reliable?
The price and inventory of SMAJ5.0CAHM3_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 SMAJ5.0CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMAJ5.0CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ5.0CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ5.0CAHM3_A/H?
SMAJ5.0CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ5.0CAHM3_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 SMAJ5.0CAHM3_A/H?
For technical support, including SMAJ5.0CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ5.0CAHM3_A/H requirements.
6.How does Aetrix verify that SMAJ5.0CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMAJ5.0CAHM3_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 SMAJ5.0CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMAJ5.0CAHM3_A/H?
All SMAJ5.0CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ5.0CAHM3_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 SMAJ5.0CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMAJ5.0CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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