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Vishay General Semiconductor - Diodes Division SMA6J16AHM3/5A
- Part No.:
- SMA6J16AHM3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J16AHM3/5A.pdf
- Description:
- TVS DIODE 16VWM 25.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,560
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Product details
Overview
SMA6J16AHM3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for robust overvoltage protection of sensitive electronics. It features a 16 V stand-off voltage (VWM), 17.8–19.7 V breakdown voltage (VBR at IT = 1 mA), 25.2 V maximum clamping voltage at 19.5 A (10/1000 μs), 600 W peak pulse power rating, and operates across –55 °C to +150 °C junction temperature range - deployed on power rails and signal lines in industrial sensor interfaces.
For engineers reviewing the SMA6J16AHM3/5A datasheet, SMA6J16AHM3/5A pinout, SMA6J16AHM3/5A application, or SMA6J16AHM3/5A equivalent, key selection criteria include verified clamping performance under 10/1000 μs surge, unidirectional polarity confirmation, thermal resistance (RθJA = 120 °C/W), RoHS/halogen-free compliance (M3 suffix), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches to divert transient energy away from downstream ICs or MOSFETs. Its low dynamic resistance (RD = 0.229 Ω) ensures tight clamping control, while the 120 °C/W junction-to-ambient thermal resistance defines derating behavior above TA = 25 °C.
The device is rated for 600 W peak pulse power (10/1000 μs), 4000 W (8/20 μs), and withstands 50 A non-repetitive forward surge current (IFSM). It meets J-STD-020 MSL Level 1 and JESD 201 Class 2 whisker testing, confirming suitability for high-reliability industrial assembly processes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before leakage exceeds 0.2 μA; sets upper limit for normal circuit operation. |
| VBR (min/max) | 17.8 V / 19.7 V at IT = 1 mA - Confirmed avalanche onset range; determines minimum trigger threshold under DC bias. |
| VC at IPP | 25.2 V at 19.5 A (10/1000 μs) - Measured clamping voltage during standardized surge; defines worst-case voltage seen by protected load. |
| PPPM (10/1000 μs) | 600 W - Peak transient energy handling capacity; used to size protection for inductive switching events in power supplies. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance on standard 5.0 mm × 5.0 mm copper pads; governs power derating above 25 °C ambient. |
| Polarity | Unidirectional - Blocks reverse voltage only; requires correct cathode orientation (marked band) in series with protected line. |
| Package | SMA (DO-214AC) - Surface-mount outline with 0.208" length, 0.157" width, matte tin-plated leads; compatible with reflow soldering at 260 °C peak. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case meeting UL 94 V-0 flammability rating; cathode indicated by color band; terminals are matte tin plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side of protected circuit; enables forward surge current path up to 50 A (IFSM). |
| Cathode | Current exit point during forward conduction; clamping node during reverse transients | Marked end (color band); tied to higher-potential rail (e.g., VCC or signal line) to clamp overvoltage to ground or return path. |
Key Features
| Feature | Design Value |
|---|---|
| Clamping voltage control | VC = 25.2 V @ 19.5 A (10/1000 μs) with RD = 0.229 Ω - Enables predictable voltage limiting for 3.3 V/5 V/12 V logic and power rails. |
| Automated placement support | Low-profile SMA package with J-STD-020 MSL Level 1 rating - Ensures compatibility with high-speed pick-and-place and lead-free reflow profiles (260 °C peak). |
| Halogen-free & RoHS compliance | M3 suffix indicates halogen-free molding compound and RoHS-compliant materials - Meets IPC-1752A environmental reporting and industrial safety requirements. |
| High surge robustness | 4000 W peak pulse power (8/20 μs) - Withstands lightning-induced surges and EFT bursts common in industrial fieldbus and sensor I/O interfaces. |
| Stable temperature performance | VBR temperature coefficient αT = 0.083 × 10⁻⁴ /°C - Predictable breakdown shift across –55 °C to +150 °C operating range; supports automotive under-hood and factory-floor deployments. |
Applications
| Industrial Sensor Interface Protection | DC Power Rail Surge Suppression |
|---|---|
Use Scenario: Protecting analog output (4–20 mA) and digital I/O (RS-485, CAN) lines in factory automation sensors exposed to motor switching noise and ESD. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between signal line and ground, triggered only during overvoltage events. Use Value: Limits induced transients to ≤25.2 V, preventing latch-up or damage to precision ADCs, isolators, and transceivers operating at ±15 V or 24 V supply rails. |
Use Scenario: Safeguarding 16 V nominal DC input stages of PLC power modules and programmable logic controllers against inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Parallel-connected voltage clamp on main input rail, activated within nanoseconds of overvoltage onset. Use Value: Absorbs 600 W (10/1000 μs) surges without degradation, maintaining system uptime where replacement downtime incurs production loss. |
| Telecom Line Card Transient Protection | Consumer Appliance Motor Control Board |
Use Scenario: Shielding Ethernet PHY interface and PoE-powered circuitry on telecom access equipment from lightning-induced surges on twisted-pair lines. IC Role / Device Role / Timing Role: Unidirectional TVS on each data pair (TX+/TX−, RX+/RX−), referenced to local ground plane. Use Value: Clamps 8/20 μs surges to ≤29.5 V (VC at 119 A), preserving signal integrity and preventing PHY IC damage during Category 4 surge tests. |
Use Scenario: Guarding microcontroller GPIOs and gate drivers on washing machine motor control boards subjected to brush-commutator arcing and relay bounce. IC Role / Device Role / Timing Role: Localized protection at MCU I/O pins and half-bridge driver inputs, placed adjacent to connectors and switches. Use Value: Delivers 50 A IFSM surge tolerance and –55 °C to +150 °C operation, ensuring reliability in humid, thermally cycling appliance environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J16AHE3/5A | Same electrical specs (VWM = 16 V, VBR = 17.8–19.7 V, VC = 25.2 V), but E3 suffix: RoHS-compliant with standard (non-halogen-free) molding compound. | No difference in protection function; differs only in material compliance - E3 lacks halogen-free certification required in some EU industrial tenders. | Select SMA6J16AHE3/5A if halogen-free content is not mandated; otherwise, SMA6J16AHM3/5A is required for IPC-1752A reporting. |
| SMCJ16A-M3/57T | Higher power rating: 1500 W (10/1000 μs), same VWM/VBR, but larger SMC (DO-214AB) package (0.285" × 0.240") and RθJA = 35 °C/W. | Supports higher sustained surge duty cycles and better thermal dissipation; requires larger PCB footprint and different pad layout. | Choose SMCJ16A-M3/57T only when 600 W is insufficient and board space allows SMC package; SMA6J16AHM3/5A remains optimal for space-constrained SMA-compatible designs. |
Compared with SMA6J16AHE3/5A, SMA6J16AHM3/5A adds halogen-free compliance without sacrificing electrical performance; versus SMCJ16A-M3/57T, it trades lower power handling for compact SMA footprint and simplified layout - making SMA6J16AHM3/5A the preferred choice for cost-sensitive, space-limited industrial and telecom front-end protection.
Availability
SMA6J16AHM3/5A is available at Aetrix Electronics and suitable for industrial sensor interfaces, DC power rail surge suppression, and telecom line card protection requiring stable component supply, long-term lifecycle assurance, and traceable halogen-free sourcing.
Supply support for SMA6J16AHM3/5A 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, TVS devices, and optoelectronics with emphasis on reliability, power efficiency, and industrial-grade qualification.
The SMA6JxxA series is part of Vishay's Transient Voltage Suppressor portfolio, engineered specifically for surface-mount overvoltage protection in harsh environments - targeting industrial automation, telecom infrastructure, and consumer appliance applications demanding high surge immunity and long-term stability.
FAQ
What is the clamping voltage of SMA6J16AHM3/5A under a 10/1000 μs surge?
The SMA6J16AHM3/5A has a maximum clamping voltage (VC) of 25.2 V at 19.5 A under the 10/1000 μs waveform, as specified in the Vishay datasheet (Document Number: 89460, Rev. 09-Jan-2024). This value is measured with the device mounted on 5.0 mm × 5.0 mm copper pads and represents the peak voltage seen by protected circuitry during standardized surge testing. The SMA6J16AHM3/5A maintains this clamping performance across its full operating temperature range.
Is SMA6J16AHM3/5A unidirectional or bidirectional?
SMA6J16AHM3/5A is a unidirectional Transient Voltage Suppressor, as confirmed in the Vishay datasheet under "PRIMARY CHARACTERISTICS" and "FEATURES". It conducts only in reverse-biased avalanche mode and must be oriented with the cathode band toward the higher-potential side of the protected line. Bidirectional variants (e.g., SMA6J16CA) are separate part numbers and are not interchangeable with SMA6J16AHM3/5A.
What does the "M3" suffix mean in SMA6J16AHM3/5A?
The "M3" suffix in SMA6J16AHM3/5A denotes halogen-free, RoHS-compliant construction per Vishay's material categorization standards (www.vishay.com/doc?99912). It specifies that both the molding compound and metallization meet halogen-free requirements (<900 ppm bromine, <900 ppm chlorine, total halogens <1500 ppm), in addition to RoHS Directive 2011/65/EU compliance. This distinguishes it from the E3-suffix variant, which is RoHS-compliant but not halogen-free.
Can SMA6J16AHM3/5A replace SMA6J16AHE3/5A in an existing design?
Yes - SMA6J16AHM3/5A is a direct functional and mechanical replacement for SMA6J16AHE3/5A, sharing identical electrical specifications (VWM, VBR, VC, PPPM), package (SMA/DO-214AC), pinout, and thermal characteristics. The only difference is material composition: M3 adds halogen-free compliance. No PCB or layout changes are needed, but ensure the M3 version meets your environmental compliance documentation requirements.
What is the maximum operating temperature for SMA6J16AHM3/5A?
The SMA6J16AHM3/5A has a maximum junction temperature (TJ max.) of +150 °C and an operating junction and storage temperature range of –55 °C to +150 °C, as stated in the "MAXIMUM RATINGS" table of the Vishay datasheet. Derating of peak pulse power begins above TA = 25 °C per Figure 2, with full derating applied at +150 °C ambient when using the recommended pad layout.
SMA6J16AHM3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 25.2V
- Current - Peak Pulse (10/1000µs):
- 23.8A
- Power - Peak Pulse:
- 600W
- 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)
SMA6J16AHM3/5A FAQ
1.How can I place an order for SMA6J16AHM3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J16AHM3/5A 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 SMA6J16AHM3/5A reliable?
The price and inventory of SMA6J16AHM3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J16AHM3/5A is usually 5 days.
3.What payment methods are accepted for SMA6J16AHM3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J16AHM3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J16AHM3/5A?
SMA6J16AHM3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J16AHM3/5A 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 SMA6J16AHM3/5A?
For technical support, including SMA6J16AHM3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J16AHM3/5A requirements.
6.How does Aetrix verify that SMA6J16AHM3/5A is sourced from the original manufacturer or authorized distributors?
All SMA6J16AHM3/5A 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 SMA6J16AHM3/5A meets industry standards.
7.What is the process for return or replacement of SMA6J16AHM3/5A?
All SMA6J16AHM3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J16AHM3/5A, 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 SMA6J16AHM3/5A part is unused and in its original packaging.
Return procedure for SMA6J16AHM3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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