My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMAJ16A-E3/5A
- Part No.:
- SMAJ16A-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ16A-E3/5A.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,498
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ16A-E3/5A from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary overvoltage protection of sensitive electronics. It features a 16 V stand-off voltage (VWM), 26.0 V maximum clamping voltage (VC) at 15.4 A peak pulse current, and 400 W peak pulse power rating with a 10/1000 μs waveform - deployed in DC power rails, I/O lines, and MOSFET gate protection circuits.
For engineers reviewing the SMAJ16A-E3/5A datasheet, SMAJ16A-E3/5A pinout, SMAJ16A-E3/5A application, or SMAJ16A-E3/5A equivalent, key selection criteria include its unidirectional polarity, SMA (DO-214AC) package compatibility with automated placement, AEC-Q101 qualification option, low incremental surge resistance, and compliance with UL 497B for telecom and industrial surge protection systems.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below 16 V and rapidly transitions to low-impedance conduction when transients exceed its breakdown threshold (17.8–19.7 V at 1 mA). Its glass-passivated junction ensures stable avalanche characteristics and repeatable clamping performance under repetitive surge events.
Designed for PCB-level protection against inductive switching spikes and lightning-induced surges, it delivers sub-nanosecond response time and meets MSL Level 1 per J-STD-020 with peak reflow tolerance up to 260 °C. Thermal resistance is 120 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA; defines safe DC bias margin. |
| VBR (min/max) | 17.8 V / 19.7 V at 1 mA - Confirmed breakdown range ensuring reliable turn-on during overvoltage events. |
| VC @ IPPM | 26.0 V at 15.4 A - Clamped voltage seen by protected circuit during 400 W 10/1000 µs surge; limits stress on downstream ICs. |
| PPPM | 400 W - Peak pulse power handling capability with 0.01% duty cycle; sufficient for IEC 61000-4-5 Level 4 surges. |
| IFSM | 40 A - Single half-sine surge current rating (8.3 ms); supports robust protection against motor-switching transients. |
| TJ max | +150 °C - Maximum junction temperature enabling operation in automotive under-hood and industrial environments. |
| Package | SMA (DO-214AC) - Standardized surface-mount outline with cathode band marking; compatible with IPC-7351B footprint. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes clamping loop during transient conduction. |
| Cathode | High-side connection point | Connected to protected line (e.g., 12 V rail or signal input); band-marked end for orientation verification. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Enables single-device protection against IEC 61000-4-5 4 kV/2 Ω surge waveforms without derating above 78 V. |
| Glass passivated junction | Ensures stable avalanche behavior across temperature and lifetime, minimizing parameter drift in harsh environments. |
| MSL Level 1 rating | Allows direct placement into high-temperature reflow profiles (peak 260 °C) without preconditioning or baking. |
| AEC-Q101 qualified option | Available with HE3/HM3 suffixes for automotive applications requiring validated reliability per stress-test standards. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes voltage overshoot during clamping, reducing risk of latch-up or damage to 3.3 V/5 V logic interfaces. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Primary clamping element placed between power input and upstream filter capacitor. Use Value: Limits transient voltage to ≤26.0 V, preventing damage to voltage regulators and microcontrollers rated for 36 V absolute max. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) shunt protector on differential or single-ended signal lines. Use Value: Sub-ns response preserves signal integrity while absorbing ±15 kV contact ESD per IEC 61000-4-2 without affecting 10 kHz bandwidth. |
| Telecom DC Power Input Protection | Consumer Device USB Port Protection |
|
Use Scenario: Safeguarding PoE-powered equipment inputs against induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-line defense on 48 V DC input before DC/DC converter stage. Use Value: Withstands 400 W surges per IEEE 802.3bt requirements while maintaining <1 µA leakage at 48 V nominal. |
Use Scenario: Adding surge immunity to USB 2.0 data lines and VBUS in portable chargers and docking stations. IC Role / Device Role / Timing Role: Unidirectional clamp on VBUS line only; paired with bidirectional TVS on D+/D−. Use Value: Clamps 100 V transients to 26.0 V within 1 ns, preventing overvoltage damage to USB controller ICs with 6 V abs max rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16CA-E3/5A | Bidirectional variant with same VWM (16 V), symmetric clamping in both polarities; VC = 26.0 V at ±15.4 A. | Required for AC-coupled or floating signal lines where polarity reversal may occur (e.g., RS-485, CAN bus). | Select SMAJ16CA-E3/5A only if bidirectional clamping is needed; SMAJ16A-E3/5A is optimal for DC-biased rails with defined polarity. |
| SMBJ16A-E3/52 | Same VWM and VC, but SMB (DO-214AA) package - 25 % larger footprint, 600 W PPPM, higher thermal mass. | Better suited for high-reliability industrial systems requiring extended surge endurance or higher IPPM margin. | Choose SMBJ16A-E3/52 when board space allows and >400 W surge headroom is required; SMAJ16A-E3/5A fits tighter layouts with proven 400 W capability. |
Compared with SMAJ16CA-E3/5A and SMBJ16A-E3/52, the SMAJ16A-E3/5A provides optimal balance of compact SMA packaging, precise unidirectional clamping, and verified 400 W surge handling - making it ideal for cost-sensitive, space-constrained DC power and signal line protection where polarity is fixed.
Availability
SMAJ16A-E3/5A is available at Aetrix Electronics and suitable for automotive control units, industrial sensor modules, telecom power supplies, and consumer USB power delivery systems requiring stable component supply and RoHS-compliant sourcing.
Supply support for SMAJ16A-E3/5A 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, MOSFETs, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The SMAJ series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where fast response, stable clamping, and AEC-Q101 compliance are critical.
FAQ
What is the breakdown voltage range for SMAJ16A-E3/5A?
The SMAJ16A-E3/5A has a guaranteed breakdown voltage (VBR) range of 17.8 V to 19.7 V at 1 mA test current, measured per ANSI/IEEE C62.35 standards. This range ensures consistent turn-on behavior across production lots and temperature extremes, and is explicitly confirmed in Vishay's Document Number 88390, Revision 09-Jan-2024. The SMAJ16A-E3/5A maintains this specification under standard test conditions (TA = 25 °C).
Is SMAJ16A-E3/5A RoHS-compliant and halogen-free?
Yes, SMAJ16A-E3/5A carries the "E3" suffix, indicating full RoHS compliance per EU Directive 2011/65/EU and exemption 7a. It is not halogen-free; for halogen-free and RoHS-compliant versions, specify SMAJ16A-M3/5A. Both variants meet JESD 201 Class 2 whisker resistance and UL 497B recognition. The SMAJ16A-E3/5A uses matte tin-plated leads solderable per J-STD-002.
Can SMAJ16A-E3/5A be used in automotive applications?
SMAJ16A-E3/5A itself is commercial-grade; however, the AEC-Q101 qualified version is available as SMAJ16AHE3_A/I (with "HE3" suffix and revision code). That variant undergoes stress testing per AEC-Q101 including HTGB, HTRB, and TCT. For non-automotive designs, SMAJ16A-E3/5A is fully suitable - its thermal and surge ratings align with under-hood ambient conditions when properly mounted. Always verify qualification status via the full ordering code.
What is the maximum clamping voltage of SMAJ16A-E3/5A at rated surge current?
The SMAJ16A-E3/5A exhibits a maximum clamping voltage (VC) of 26.0 V at its rated peak pulse current (IPPM) of 15.4 A, tested with a 10/1000 μs waveform. This value is measured under standardized conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads) and represents the worst-case voltage imposed on the protected circuit during a full-rated surge event. The SMAJ16A-E3/5A achieves this with a clamping ratio of ~1.38 relative to its minimum VBR.
Does SMAJ16A-E3/5A have a specified junction capacitance?
No, junction capacitance (CJ) is not specified for SMAJ16A-E3/5A in the official Vishay datasheet (Document Number 88390). Capacitance values are provided only for bidirectional variants (e.g., SMAJ16CA) in Figure 4, ranging from ~100 pF to ~200 pF depending on VWM. As a unidirectional TVS, SMAJ16A-E3/5A prioritizes low dynamic impedance over low capacitance; designers requiring <50 pF should consider specialized low-CJ TVS families like the VCML series instead of the SMAJ16A-E3/5A.
SMAJ16A-E3/5A 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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ16A-E3/5A FAQ
1.How can I place an order for SMAJ16A-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ16A-E3/5A 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 SMAJ16A-E3/5A reliable?
The price and inventory of SMAJ16A-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ16A-E3/5A is usually 5 days.
3.What payment methods are accepted for SMAJ16A-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ16A-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ16A-E3/5A?
SMAJ16A-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ16A-E3/5A 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 SMAJ16A-E3/5A?
For technical support, including SMAJ16A-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ16A-E3/5A requirements.
6.How does Aetrix verify that SMAJ16A-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMAJ16A-E3/5A 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 SMAJ16A-E3/5A meets industry standards.
7.What is the process for return or replacement of SMAJ16A-E3/5A?
All SMAJ16A-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ16A-E3/5A, 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 SMAJ16A-E3/5A part is unused and in its original packaging.
Return procedure for SMAJ16A-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ16A-E3/5A Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
