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Vishay General Semiconductor - Diodes Division SMAJ16CAHE3/61
- Part No.:
- SMAJ16CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ16CAHE3/61.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,205
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Product details
Overview
SMAJ16CAHE3/61 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 16 V standoff voltage (VWM), 26.0 V maximum clamping voltage (VC) at 15.4 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O protection, and telecom line surge suppression.
For engineers reviewing the SMAJ16CAHE3/61 datasheet, SMAJ16CAHE3/61 pinout, SMAJ16CAHE3/61 application, or SMAJ16CAHE3/61 equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification, SMA (DO-214AC) package compatibility, and compliance with UL 497B for telecom protector classification.
Technical Context
This device operates as a voltage-clamped shunt protector: during transients exceeding VWM = 16 V, it avalanches symmetrically in both directions to clamp voltage at ≤26.0 V while diverting up to 15.4 A (10/1000 μs). Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 μA at VWM).
Thermally, it exhibits RθJA = 120 °C/W and RθJL = 30 °C/W, enabling reliable operation up to TJ = +150 °C. The HE3 suffix confirms RoHS-compliance and AEC-Q101 qualification - validated for automotive-grade reliability under repetitive surge stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 12 V nominal systems. |
| VBR min/max | 17.8 V / 19.7 V at IT = 1 mA - Confirmed bidirectional breakdown range; ensures symmetrical turn-on behavior in AC-coupled lines. |
| VC @ IPPM | 26.0 V at 15.4 A - Clamping voltage under 10/1000 μs surge; guarantees downstream ICs (e.g., RS-485 transceivers) remain below absolute max ratings. |
| PPPM | 400 W - Peak pulse power handling per 10/1000 μs waveform; sufficient for ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surges. |
| IFSM | 40 A - Non-repetitive forward surge current rating (8.3 ms half-sine); supports high-energy inductive switch-off events in automotive solenoid drivers. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive modules without derating at ambient ≤125 °C. |
| Package | SMA (DO-214AC) - Surface-mount outline with 5.0 mm × 5.0 mm copper pad thermal footprint; compatible with standard SMT reflow profiles (MSL Level 1, 260 °C peak). |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads; bidirectional construction has no polarity marking - both terminals are electrically identical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Both terminals serve as interchangeable surge conduction paths; no cathode band - enables blind placement in AC or differential signal lines. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces per stress test requirements. |
| UL 497B recognized (QVGQ2) | Approved for telecom line protector classification - meets safety standards for primary-side surge protection in PoE and DSL equipment. |
| 400 W peak pulse power | Handles repeated 10/1000 μs surges up to 0.01% duty cycle without degradation - suitable for industrial PLC backplane protection. |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes let-through energy during clamping - critical for safeguarding low-voltage logic inputs (e.g., microcontroller GPIOs). |
| MSL Level 1 moisture sensitivity | Zero floor life limitation; can be stored indefinitely and processed using standard reflow without baking preconditioning. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load dump and ESD events in vehicle body control modules. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly at connector entry point, clamping fast-rising spikes before reaching PHY layer. Use Value: Maintains signal integrity by limiting voltage excursion to ≤26.0 V during ISO 16750-2 load dump tests, preventing transceiver latch-up or permanent damage. |
Use Scenario: Guarding 24 V DC input terminals of programmable logic controllers against field-wiring induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on power rail, coordinated with upstream fuses and downstream ceramic capacitors for multi-stage protection. Use Value: Absorbs 400 W surge energy without failure, ensuring system uptime in factory automation environments with frequent cable hot-plug events. |
| Telecom Line Protection | Consumer Power Adapter Input |
Use Scenario: Safeguarding Ethernet PHY ports in VoIP gateways and DSL modems against lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Bidirectional clamping element across differential pairs (e.g., TX+/TX−), referenced to chassis ground via low-inductance layout. Use Value: Symmetric VBR (17.8–19.7 V) and low capacitance ensure minimal signal distortion while meeting IEC 61000-4-5 Level 3 immunity requirements. |
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters after AC/DC conversion and before DC/DC regulation. IC Role / Device Role / Timing Role: Final-stage protector on 5–20 V output rails, triggered only during abnormal regulator failure or feedback loop loss. Use Value: Fast response time (<1 ps) and 26.0 V clamping prevent downstream USB controller ICs from exceeding 28 V absolute maximum rating during fault conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16CA-M3/61 | Halogen-free, RoHS-compliant, non-AEC-Q101; identical electrical specs and package. | Targeted at commercial/industrial designs where automotive qualification is not required. | Select when halogen-free compliance is mandated but AEC-Q101 testing is unnecessary. |
| SMBJ16CAHE3/61 | Same VWM/VC, but SMB (DO-214AA) package - 30% larger footprint and higher PPPM (600 W). | Better suited for high-energy surge environments (e.g., outdoor telecom cabinets) requiring greater thermal mass. | Choose when board space allows larger package and higher surge margin is needed beyond 400 W. |
Compared with SMAJ16CAHE3/61, SMAJ16CA-M3/61 offers identical protection performance without automotive qualification, while SMBJ16CAHE3/61 trades compactness for higher surge capacity - making SMAJ16CAHE3/61 optimal for space-constrained AEC-Q101-compliant automotive modules.
Availability
SMAJ16CAHE3/61 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom line surge suppression requiring stable component supply across production lifecycles.
Supply support for SMAJ16CAHE3/61 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 high-reliability diodes, MOSFETs, and passive components for demanding industrial and automotive applications.
The SMAJ series delivers standardized TVS protection in compact surface-mount packages, engineered specifically for cost-sensitive yet reliability-critical applications including automotive ECUs and industrial control systems.
FAQ
What is the clamping voltage of SMAJ16CAHE3/61 at its rated peak pulse current?
The SMAJ16CAHE3/61 has a maximum clamping voltage (VC) of 26.0 V at 15.4 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 09-Jan-2024. The clamping performance ensures protected circuits remain within safe operating limits during surge events. SMAJ16CAHE3/61 maintains this specification across its full operating temperature range of −55 °C to +150 °C.
Is SMAJ16CAHE3/61 suitable for automotive applications?
Yes, SMAJ16CAHE3/61 is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix. It undergoes rigorous stress testing including temperature cycling, humidity bias, and surge endurance per AEC-Q101 requirements. The device is deployed in body control modules, ADAS sensor interfaces, and infotainment power supplies where reliability under harsh environmental conditions is mandatory. SMAJ16CAHE3/61 meets these demands while retaining full compatibility with standard SMT assembly processes.
How does the bidirectional design of SMAJ16CAHE3/61 affect its circuit implementation?
The bidirectional configuration of SMAJ16CAHE3/61 eliminates polarity concerns during placement - both terminals are functionally identical, with no cathode band marking. This simplifies layout for AC-coupled or differential signal lines (e.g., RS-485, CAN, Ethernet) and avoids orientation errors in automated assembly. SMAJ16CAHE3/61 provides symmetrical clamping in either direction, ensuring consistent protection regardless of transient polarity. Its VBR range (17.8–19.7 V) and VC (26.0 V) apply identically across both polarities.
What is the thermal resistance of SMAJ16CAHE3/61, and how does it impact PCB layout?
SMAJ16CAHE3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead (RθJL) of 30 °C/W when mounted on 0.2″ × 0.2″ (5.0 mm × 5.0 mm) copper pads per terminal. To maintain TJ ≤ 150 °C under worst-case power dissipation, PCB layout must provide adequate copper area and minimize trace length to thermal vias. SMAJ16CAHE3/61 achieves MSL Level 1 rating, allowing direct reflow without baking - but thermal performance remains dependent on adherence to the recommended pad layout in the Vishay package drawing.
Does SMAJ16CAHE3/61 meet any safety certifications for telecom applications?
Yes, SMAJ16CAHE3/61 carries Underwriters Laboratory (UL) Recognition under file E136766 for both unidirectional and bidirectional devices, compliant with UL 497B for protectors used in telecommunications equipment. This certification validates its suitability for primary-side surge protection in DSL modems, VoIP gateways, and PoE-powered devices. SMAJ16CAHE3/61 also meets JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 reflow requirements - supporting end-equipment safety and manufacturing reliability.
SMAJ16CAHE3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 15.4A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ16CAHE3/61 FAQ
1.How can I place an order for SMAJ16CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ16CAHE3/61 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 SMAJ16CAHE3/61 reliable?
The price and inventory of SMAJ16CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ16CAHE3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ16CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ16CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ16CAHE3/61?
SMAJ16CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ16CAHE3/61 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 SMAJ16CAHE3/61?
For technical support, including SMAJ16CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ16CAHE3/61 requirements.
6.How does Aetrix verify that SMAJ16CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ16CAHE3/61 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 SMAJ16CAHE3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ16CAHE3/61?
All SMAJ16CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ16CAHE3/61, 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 SMAJ16CAHE3/61 part is unused and in its original packaging.
Return procedure for SMAJ16CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ16CAHE3/61 Tags
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