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Vishay General Semiconductor - Diodes Division SMAJ16AHE3/61
- Part No.:
- SMAJ16AHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ16AHE3/61.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,455
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Product details
Overview
SMAJ16AHE3/61 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 a 16 V stand-off voltage (VWM), 17.8–19.7 V breakdown voltage (VBR) at 1 mA, 26.0 V maximum clamping voltage (VC) at 15.4 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 μs waveform), commonly deployed to protect MOSFET gates and microcontroller I/O in automotive body control modules.
For engineers reviewing the SMAJ16AHE3/61 datasheet, SMAJ16AHE3/61 pinout, SMAJ16AHE3/61 application, or SMAJ16AHE3/61 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 120 °C/W junction-to-ambient thermal resistance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuit nodes, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable leakage performance (<1.0 μA at 16 V), while low incremental surge resistance enables rapid energy diversion during ESD or load-switching transients.
The SMAJ16AHE3/61 is rated for repetitive 0.01% duty cycle pulses up to 400 W below 78 V and 300 W above - derated linearly with junction temperature per Fig. 2. Its MSL Level 1 rating (JEDEC J-STD-020) and matte tin-plated leads support lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - maximum continuous reverse operating voltage before significant conduction begins |
| VBR min/max | 17.8 V / 19.7 V at 1 mA - guaranteed breakdown range defining turn-on threshold tolerance |
| VC @ IPPM | 26.0 V at 15.4 A - clamped voltage seen by protected circuit during worst-case 10/1000 μs surge |
| PPPM | 400 W (10/1000 μs) - peak transient energy absorption capability under standard test waveform |
| ID @ VWM | ≤1.0 μA - ultra-low reverse leakage ensuring minimal standby power loss in battery-powered systems |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJA | 120 °C/W - thermal resistance indicating required PCB copper area (0.2" × 0.2" pads) for safe power dissipation |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case with matte tin-plated leads; cathode indicated by band marking on unidirectional variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional protection configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 12 V rail or MCU I/O); band-marked end defines polarity orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing |
| 400 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/3a transients without degradation when mounted on specified copper pads |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio TVS devices |
| MSL Level 1 | Zero floor life limitation - can be stored indefinitely and processed through standard lead-free reflow without baking |
| Glass passivated junction | Ensures stable VBR and ID over time and temperature, critical for long-life industrial deployments |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
|
Use Scenario: Protecting 12 V supply rails and switch inputs against load dump and inductive kickback in BCMs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between fused 12 V rail and microcontroller GPIO or driver IC input. Use Value: Clamps transients to ≤26.0 V, preventing latch-up or gate oxide damage in automotive-grade MCUs operating up to 16 V nominal. |
Use Scenario: Shielding 24 V digital input channels from field-wiring surges in programmable logic controllers. IC Role / Device Role / Timing Role: Parallel-connected clamping device across optocoupler input or Schmitt-trigger input stage. Use Value: Limits induced voltage spikes to safe levels within 1 ns response time, preserving signal integrity and input stage reliability. |
| Consumer Appliance Motor Drive | Telecom Power Interface |
|
Use Scenario: Safeguarding H-bridge gate drivers from back-EMF during brushed DC motor commutation. IC Role / Device Role / Timing Role: Mounted directly at MOSFET source/drain terminals to suppress fast dv/dt transients. Use Value: Absorbs 400 W surge energy without failure, enabling robust motor control in washing machines and HVAC blowers. |
Use Scenario: Front-end protection of PoE-powered equipment against lightning-induced surges on Ethernet power pairs. IC Role / Device Role / Timing Role: Paired with common-mode chokes and secondary-side TVS to meet IEC 61000-4-5 Level 4 requirements. Use Value: Provides precise 16 V standoff and 26 V clamping to avoid false triggering while maintaining compliance margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A-E3/61 | Commercial-grade version without AEC-Q101 qualification; identical electrical specs and package | Approved for non-automotive industrial or consumer use only | Select when automotive qualification is not required and cost optimization is prioritized |
| SMAJ16CAHE3/61 | Bidirectional variant with same VWM (16 V), but symmetric clamping in both polarities; VC = 26.0 V at ±15.4 A | Suitable for AC-coupled or floating signal lines where polarity reversal may occur | Choose for differential bus protection (e.g., RS-485) or ungrounded sensor interfaces |
Compared with SMAJ16AHE3/61, the SMAJ16A-E3/61 offers identical clamping performance at lower qualification cost, while SMAJ16CAHE3/61 extends protection to bidirectional transients - neither is pin-compatible due to polarity marking differences, requiring layout verification for replacement.
Availability
SMAJ16AHE3/61 is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecom infrastructure requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for SMAJ16AHE3/61 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 is engineered specifically for board-level transient suppression in harsh environments, emphasizing robustness, repeatable clamping, and seamless integration into automated SMT assembly lines.
FAQ
What is the maximum clamping voltage of the SMAJ16AHE3/61 under a 10/1000 μs surge?
The SMAJ16AHE3/61 exhibits a maximum clamping voltage (VC) of 26.0 V when subjected to its rated peak pulse current of 15.4 A using the standardized 10/1000 μs waveform. This value is measured at TJ = 25 °C with the device mounted on 0.2" × 0.2" copper pads per Vishay specification document 88390, ensuring predictable overvoltage limiting for downstream ICs.
Is SMAJ16AHE3/61 suitable for automotive applications?
Yes, SMAJ16AHE3/61 is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix. It meets stringent reliability requirements including temperature cycling, high-temperature operating life, and mechanical shock testing - making it appropriate for body electronics, infotainment power rails, and ADAS sensor interfaces where transient immunity is critical.
What does the "HE3" suffix indicate in SMAJ16AHE3/61?
The "HE3" suffix in SMAJ16AHE3/61 denotes RoHS-compliant construction with AEC-Q101 qualification, distinguishing it from commercial-grade variants like "E3". It confirms compliance with automotive reliability standards, halogen-free materials, and JEDEC J-STD-020 MSL Level 1 moisture sensitivity - all verified per Vishay's internal qualification reports referenced in document 88390.
How does SMAJ16AHE3/61 differ from SMAJ16CAHE3/61?
SMAJ16AHE3/61 is unidirectional with cathode band marking and clamps only in reverse bias, whereas SMAJ16CAHE3/61 is bidirectional with no polarity marking and clamps symmetrically in both directions. Their VWM, VBR, and VC values are identical, but circuit layout and grounding strategy must be revised when substituting one for the other.
What is the thermal resistance of SMAJ16AHE3/61, and how does it affect PCB layout?
SMAJ16AHE3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on minimum recommended 0.2" × 0.2" copper pads per terminal. This value dictates that adequate copper area must be allocated to dissipate 3.3 W continuous power and manage transient thermal spikes - undersized pads will cause excessive junction temperature rise and premature failure.
SMAJ16AHE3/61 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:
- 1
- Bidirectional Channels:
- -
- 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)
SMAJ16AHE3/61 FAQ
1.How can I place an order for SMAJ16AHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ16AHE3/61 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 SMAJ16AHE3/61 reliable?
The price and inventory of SMAJ16AHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ16AHE3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ16AHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ16AHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ16AHE3/61?
SMAJ16AHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ16AHE3/61 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 SMAJ16AHE3/61?
For technical support, including SMAJ16AHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ16AHE3/61 requirements.
6.How does Aetrix verify that SMAJ16AHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ16AHE3/61 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 SMAJ16AHE3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ16AHE3/61?
All SMAJ16AHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ16AHE3/61, 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 SMAJ16AHE3/61 part is unused and in its original packaging.
Return procedure for SMAJ16AHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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