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Vishay General Semiconductor - Diodes Division SMAJ16CA-01HE3_A/H
- Part No.:
- SMAJ16CA-01HE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ16CA-01HE3_A/H.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMAJ16CA-01HE3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 16 V stand-off voltage (VWM), 26.0 V maximum clamping voltage at 15.4 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial electronics.
For engineers reviewing the SMAJ16CA-01HE3_A/H datasheet, SMAJ16CA-01HE3_A/H pinout, SMAJ16CA-01HE3_A/H application, or SMAJ16CA-01HE3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VWM = 1.625), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a silicon avalanche diode optimized for fast transient suppression in both polarity directions. Its breakdown voltage range is 17.8–19.7 V at 1 mA test current, with <0.1 %/°C temperature coefficient of VBR and 1.0 μA max reverse leakage at 16 V stand-off.
The SMAJ16CA-01HE3_A/H delivers 15.4 A peak pulse current under 10/1000 μs surge conditions, with thermal resistance of 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead), enabling reliable operation up to +150 °C junction temperature in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 17.8 V / 19.7 V at 1 mA - ensures predictable avalanche turn-on within tight tolerance |
| VC @ IPPM | 26.0 V at 15.4 A - low clamping voltage limits stress on protected downstream components |
| PPPM | 400 W (10/1000 μs) - robust surge handling for inductive switching and ESD events |
| ID @ VWM | ≤1.0 μA - negligible leakage preserves signal integrity and battery life in always-on circuits |
| TJ max | +150 °C - supports under-hood automotive and high-temperature industrial environments |
| MSL Level | Level 1 (J-STD-020) - no floor life limitation; safe for standard reflow without baking |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Bidirectional construction has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (reverse bias) | One terminal of symmetrical avalanche junction; conducts during negative transients |
| Cathode | Transient current entry (forward bias) | Second terminal of symmetrical junction; conducts during positive transients |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| 400 W peak pulse power | Withstands repetitive 10/1000 μs surges up to 0.01 % duty cycle without degradation |
| Low clamping ratio (VC/VWM) | 1.625 - minimizes overvoltage exposure to protected ICs and transistors |
| UL 94 V-0 molding compound | Flame-retardant encapsulation meets safety standards for consumer and industrial end equipment |
| RoHS-compliant & halogen-free option | HE3 suffix denotes RoHS compliance; HM3 variant adds halogen-free certification |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential or single-ended signal lines upstream of interface ICs. Use Value: Limits transient voltage to ≤26.0 V while maintaining <1.0 μA leakage - preserving signal fidelity and preventing false triggering in 12 V/24 V systems. | Use Scenario: Safeguarding digital input modules in programmable logic controllers against inductive kickback from solenoids and relays. IC Role / Device Role / Timing Role: Parallel-connected TVS on 24 V DC input rails to clamp spikes before they reach optocoupler or microcontroller input stages. Use Value: 400 W surge rating handles repeated 100 V/50 ms transients; MSL Level 1 enables direct placement into high-volume SMT lines without dry-pack handling. |
| Consumer Power Adapter Output | Telecom Ethernet Port Protection |
Use Scenario: Secondary-side overvoltage protection on 5–19 V DC outputs of wall adapters and USB PD chargers. IC Role / Device Role / Timing Role: Standoff-clamp TVS placed between VOUT and GND to absorb flyback energy from regulator feedback loop instability or cable ESD. Use Value: 16 V VWM aligns with common adapter output tolerances; 26.0 V VC prevents latch-up in downstream USB controllers and PMICs. | Use Scenario: Common-mode surge suppression on RJ45 Ethernet PHY interfaces exposed to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Bidirectional TVS array component used in conjunction with common-mode chokes and Ethernet magnetics. Use Value: Symmetrical clamping ensures equal protection for both tip/ring lines; low capacitance (<100 pF at 0 V) avoids signal integrity loss at 100BASE-TX speeds. |
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-E3/61 | Same electrical specs; RoHS-compliant commercial grade (non-AEC-Q101) | Lacks automotive qualification; suitable for consumer/industrial only | Select when AEC-Q101 is not required and cost optimization is prioritized |
| SMBJ16CA-01HE3_A/H | Same VWM/VC but in larger SMB (DO-214AA) package; 600 W PPPM rating | Higher surge margin; requires larger PCB footprint and different pad layout | Choose for higher-energy threat environments where space permits larger package |
Compared with SMAJ16CA-01HE3_A/H, the E3/61 variant offers identical clamping performance without automotive qualification, while the SMBJ16CA-01HE3_A/H provides 50 % higher surge power in a physically larger package - requiring layout revision but delivering extended robustness for harsher transients.
Availability
SMAJ16CA-01HE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom Ethernet port protection requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMAJ16CA-01HE3_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 power MOSFETs with emphasis on reliability and application-specific performance.
The SMAJ series is engineered for high-speed transient suppression in space-constrained, high-reliability applications - particularly targeting automotive, industrial control, and communications infrastructure where AEC-Q101 compliance and repeatable clamping behavior are mandatory.
FAQ
What is the clamping voltage of SMAJ16CA-01HE3_A/H at its rated peak pulse current?
The SMAJ16CA-01HE3_A/H has a maximum clamping voltage (VC) of 26.0 V at 15.4 A peak pulse current (IPPM), measured under standardized 10/1000 μs waveform conditions. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during surge events. The SMAJ16CA-01HE3_A/H maintains this clamping performance consistently due to its tightly controlled avalanche breakdown characteristics.
Is SMAJ16CA-01HE3_A/H suitable for automotive applications?
Yes, SMAJ16CA-01HE3_A/H is AEC-Q101 qualified, meaning it has passed rigorous stress tests including temperature cycling, high-temperature reverse bias, and ESD immunity required for automotive electronic modules. Its -55 °C to +150 °C operating junction temperature range, MSL Level 1 rating, and RoHS compliance make it appropriate for engine control units, body electronics, and ADAS sensor interfaces. The SMAJ16CA-01HE3_A/H meets these requirements without derating.
How does the bidirectional configuration of SMAJ16CA-01HE3_A/H affect its use in circuit design?
The bidirectional configuration of SMAJ16CA-01HE3_A/H allows symmetric clamping of both positive and negative transients without polarity sensitivity - ideal for AC-coupled lines, differential buses (e.g., CAN, RS-485), or ungrounded signal paths. Unlike unidirectional TVS diodes, it requires no cathode marking and eliminates orientation errors during automated placement. The SMAJ16CA-01HE3_A/H achieves this using a back-to-back diode structure with matched VBR in both directions.
What is the thermal resistance of SMAJ16CA-01HE3_A/H, and how does it impact PCB layout?
SMAJ16CA-01HE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead resistance (RθJL) of 30 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperatures under repetitive surge conditions, designers must provide adequate copper area and avoid excessive trace length. The SMAJ16CA-01HE3_A/H datasheet specifies this pad layout as minimum recommended for rated power dissipation.
Does SMAJ16CA-01HE3_A/H require special handling during reflow soldering?
No - SMAJ16CA-01HE3_A/H is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and can be processed using standard lead-free reflow profiles with peak temperatures up to 260 °C without preconditioning or baking. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 for solderability, and the UL 94 V-0 molding compound withstands thermal cycling without delamination. The SMAJ16CA-01HE3_A/H is fully compatible with high-speed SMT assembly lines.
SMAJ16CA-01HE3_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):
- 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:
- 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)
SMAJ16CA-01HE3_A/H FAQ
1.How can I place an order for SMAJ16CA-01HE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ16CA-01HE3_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 SMAJ16CA-01HE3_A/H reliable?
The price and inventory of SMAJ16CA-01HE3_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 SMAJ16CA-01HE3_A/H is usually 5 days.
3.What payment methods are accepted for SMAJ16CA-01HE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ16CA-01HE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ16CA-01HE3_A/H?
SMAJ16CA-01HE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ16CA-01HE3_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 SMAJ16CA-01HE3_A/H?
For technical support, including SMAJ16CA-01HE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ16CA-01HE3_A/H requirements.
6.How does Aetrix verify that SMAJ16CA-01HE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMAJ16CA-01HE3_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 SMAJ16CA-01HE3_A/H meets industry standards.
7.What is the process for return or replacement of SMAJ16CA-01HE3_A/H?
All SMAJ16CA-01HE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ16CA-01HE3_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 SMAJ16CA-01HE3_A/H part is unused and in its original packaging.
Return procedure for SMAJ16CA-01HE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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