My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMAJ16CA-M3/5A
- Part No.:
- SMAJ16CA-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ16CA-M3/5A.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,294
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ16CA-M3/5A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal or power lines. It features 16 V standoff voltage (VWM), 17.8–19.7 V breakdown voltage (VBR) at 1 mA, 400 W peak pulse power (10/1000 μs), and clamps to ≤26.0 V at 15.4 A peak surge current - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMAJ16CA-M3/5A datasheet, SMAJ16CA-M3/5A pinout, SMAJ16CA-M3/5A application, or SMAJ16CA-M3/5A equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification eligibility (via HM3 suffix), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering consistent clamping performance regardless of transient polarity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while the low incremental surge resistance enables rapid energy diversion during ESD or lightning-induced surges.
The device is rated for 150 °C maximum junction temperature and exhibits a typical thermal resistance of 120 °C/W (junction-to-ambient) on standard PCB pads. Its 10/1000 μs waveform rating applies up to 400 W below 78 V - at SMAJ16CA-M3/5A's 16 V rating, full 400 W capability is sustained without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe signal line operating margin. |
| VBR min/max | 17.8 V / 19.7 V at 1 mA - Confirmed breakdown threshold range; ensures reliable turn-on above VWM with margin against false triggering. |
| VC @ IPPM | ≤26.0 V at 15.4 A - Clamped voltage under 400 W transient; limits downstream IC stress during surge events. |
| PPPM | 400 W (10/1000 μs) - Peak transient energy handling capacity; supports robust protection in automotive and industrial environments. |
| IPPM | 15.4 A - Peak surge current corresponding to 400 W clamping; determines minimum trace width and pad thermal design. |
| TJ max | 150 °C - Maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial enclosures. |
| Package | SMA (DO-214AC) - Standardized surface-mount outline with 5.28 mm length, 4.50 mm width, and 2.29 mm height; compatible with JEDEC MS-012. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking - terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically in bidirectional mode; no cathode band marking; enables layout flexibility on differential or AC-coupled lines. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - eliminates need for orientation-aware placement on AC or differential signal paths. |
| 400 W peak pulse power | Rated at 10/1000 μs waveform with no derating at 16 V - provides headroom for ISO 7637-2 Pulse 1/2/5a and IEC 61000-4-5 surge testing. |
| Halogen-free & RoHS-compliant (M3) | Meets JESD201 Class 2 whisker resistance and UL 94 V-0 flammability - satisfies automotive Tier-1 material compliance requirements. |
| MSL Level 1 (260 °C peak reflow) | Unlimited floor life at ≤30 °C/60 % RH - supports standard SMT assembly without dry-pack or baking preconditioning. |
| AEC-Q101 qualification option | Available as HM3 variant (e.g., SMAJ16CAHM3_A/I) - validated for automotive-grade reliability including HTOL, TCT, and ESD HBM/MM. |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point, shunting surge energy before it reaches signal conditioning circuitry. Use Value: Limits transient voltage to ≤26.0 V, preserving integrity of 3.3 V/5 V microcontrollers and ADC front-ends per ISO 16750-2 requirements. |
Use Scenario: Safeguarding PLC digital input modules against field-wiring faults, relay contact bounce, and 24 V DC supply transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on discrete optocoupler input channels, mounted adjacent to terminal block entry points. Use Value: Withstands repeated 400 W surges without degradation, enabling >100,000 actuation cycles in factory automation environments. |
| Consumer USB Port ESD Protection | Telecom Line Interface |
|
Use Scenario: Secondary-level ESD protection on USB 2.0 D+/D− lines in set-top boxes and smart displays, downstream of primary TVS arrays. IC Role / Device Role / Timing Role: Fast-response bidirectional suppressor absorbing ±15 kV contact discharge (IEC 61000-4-2) before reaching USB PHY. Use Value: Sub-1 ns response time and <1.0 μA leakage at 16 V ensure signal integrity and minimal standby current impact. |
Use Scenario: Overvoltage protection on POTS or VoIP line interface circuits exposed to lightning-induced surges and AC ring signals. IC Role / Device Role / Timing Role: Standoff-rated clamp on tip/ring pair, coordinated with gas discharge tube (GDT) primary protection. Use Value: 16 V VWM allows safe operation across -48 V nominal telecom battery systems while clamping to <26 V during surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A-M3/5A | Unidirectional; cathode-marked; VF = 3.5 V at 25 A forward conduction. | Requires polarity-aware layout; unsuitable for AC or differential lines without series blocking diodes. | Select only when protecting DC-biased single-ended lines where forward conduction must be blocked. |
| SMBJ16CA-M3/5A | Same VWM/VBR but higher 600 W PPPM; larger SMB (DO-214AA) package (5.28 mm × 4.57 mm). | Higher surge margin but requires 30 % more board area; not drop-in compatible due to footprint mismatch. | Choose when system-level surge testing exceeds 400 W or when thermal dissipation demands lower RθJA. |
Compared with SMAJ16A-M3/5A, SMAJ16CA-M3/5A enables polarity-agnostic layout and avoids forward conduction issues; compared with SMBJ16CA-M3/5A, it offers identical electrical protection in a space-constrained SMA footprint - critical for dense automotive and portable electronics designs.
Availability
SMAJ16CA-M3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial digital I/O modules, consumer USB port protection, and telecom line interface circuits requiring stable component supply and halogen-free compliance.
Supply support for SMAJ16CA-M3/5A 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 and automotive qualification.
The SMAJ series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness against ESD, EFT, and surge events is mandatory.
FAQ
What is the standoff voltage rating of the SMAJ16CA-M3/5A?
The SMAJ16CA-M3/5A has a maximum reverse standoff voltage (VWM) of 16 V, meaning it remains non-conductive up to this DC or RMS voltage level. This value is confirmed in the Vishay datasheet Document Number 88390, Table "ELECTRICAL CHARACTERISTICS", row for SMAJ16CA. The SMAJ16CA-M3/5A maintains <1.0 μA leakage current at this voltage, ensuring minimal loading on protected circuits during normal operation.
Is the SMAJ16CA-M3/5A suitable for automotive applications?
Yes - the SMAJ16CA-M3/5A is halogen-free and RoHS-compliant (M3 suffix), and its AEC-Q101-qualified variant (SMAJ16CAHM3_A/I) is explicitly certified for automotive use. Even the standard SMAJ16CA-M3/5A meets critical automotive requirements including MSL Level 1 reflow compatibility, 150 °C junction rating, and robust 400 W surge capability aligned with ISO 7637-2. Designers specify SMAJ16CA-M3/5A for ECU sensor protection where qualification documentation is pending or secondary-level protection suffices.
How does the bidirectional configuration of SMAJ16CA-M3/5A affect PCB layout?
The SMAJ16CA-M3/5A has no polarity marking and identical electrical behavior in both directions, so PCB layout requires no orientation alignment - either terminal may connect to line or return. This simplifies routing on differential pairs (e.g., RS-485, CAN), AC-coupled signals, or shared ground-return paths. Unlike unidirectional variants such as SMAJ16A-M3/5A, the SMAJ16CA-M3/5A eliminates risk of misplacement-induced failure, reducing assembly error rates in high-volume SMT lines.
What is the clamping voltage of SMAJ16CA-M3/5A under surge conditions?
The SMAJ16CA-M3/5A clamps to a maximum of 26.0 V when subjected to its rated 15.4 A peak pulse current (IPPM), corresponding to a 400 W transient (10/1000 μs waveform). This clamping voltage is measured per ANSI/IEEE C62.35 and verified in Vishay's datasheet Figure 1 and Table "ELECTRICAL CHARACTERISTICS". For system design, this means the SMAJ16CA-M3/5A limits transient exposure to downstream 3.3 V or 5 V ICs well within their absolute maximum ratings.
Does SMAJ16CA-M3/5A require heatsinking for standard operation?
No additional heatsinking is required for SMAJ16CA-M3/5A under typical single-event surge conditions, as its thermal design assumes mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal - providing adequate transient heat dissipation. Its RθJA is 120 °C/W under those conditions, and with a 3.3 W steady-state power dissipation limit (PD), continuous operation remains within safe junction temperature bounds (<150 °C) even at +85 °C ambient. The SMAJ16CA-M3/5A relies on PCB copper mass, not external heatsinks, for thermal management.
SMAJ16CA-M3/5A 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:
- -
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ16CA-M3/5A FAQ
1.How can I place an order for SMAJ16CA-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ16CA-M3/5A 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 SMAJ16CA-M3/5A reliable?
The price and inventory of SMAJ16CA-M3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ16CA-M3/5A is usually 5 days.
3.What payment methods are accepted for SMAJ16CA-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ16CA-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ16CA-M3/5A?
SMAJ16CA-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ16CA-M3/5A 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 SMAJ16CA-M3/5A?
For technical support, including SMAJ16CA-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ16CA-M3/5A requirements.
6.How does Aetrix verify that SMAJ16CA-M3/5A is sourced from the original manufacturer or authorized distributors?
All SMAJ16CA-M3/5A 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 SMAJ16CA-M3/5A meets industry standards.
7.What is the process for return or replacement of SMAJ16CA-M3/5A?
All SMAJ16CA-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ16CA-M3/5A, 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 SMAJ16CA-M3/5A part is unused and in its original packaging.
Return procedure for SMAJ16CA-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ16CA-M3/5A 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 …
