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Vishay General Semiconductor - Diodes Division SMA5J16CAHM3_A/H
- Part No.:
- SMA5J16CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J16CAHM3_A/H.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,376
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Product details
Overview
SMA5J16CAHM3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on signal and power lines. It features a 16 V stand-off voltage (VWM), 26.0 V maximum clamping voltage (VC) at 19.2 A peak pulse current (IPPM), and 500 W peak pulse power (10/1000 μs waveform), making it suitable for automotive sensor line protection and industrial I/O interface hardening.
For engineers reviewing the SMA5J16CAHM3_A/H datasheet, SMA5J16CAHM3_A/H pinout, SMA5J16CAHM3_A/H application, or SMA5J16CAHM3_A/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, thermal resistance (RθJA = 80 °C/W), and halogen-free RoHS compliance per Vishay HM3 suffix.
Technical Context
This device operates as a voltage-clamped crowbar during transients, with symmetrical breakdown characteristics in both directions due to its bidirectional construction. Its glass-passivated junction ensures stable leakage performance (<1.0 μA at VWM) and fast response time (<1.0 ps), critical for protecting sensitive CMOS inputs against ESD and load-switching spikes.
The SMA5J16CAHM3_A/H is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 (260 °C reflow peak). Its 500 W PPPM rating is validated under standardized 10/1000 μs waveform conditions with derating above 25 °C ambient, and it exhibits low incremental surge resistance for minimal voltage overshoot during high-current events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal swing range for protected line. |
| VBR min/max | 17.8 V / 19.7 V - Breakdown occurs within this band at 1 mA test current; ensures predictable turn-on threshold across production lot. |
| VC @ IPPM | 26.0 V - Clamped voltage at 19.2 A peak pulse current; determines worst-case overvoltage seen by downstream IC. |
| PPPM | 500 W - Peak pulse power handling capability (10/1000 μs); supports robust protection against IEC 61000-4-5 Level 4 surges. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments without thermal shutdown. |
| RθJA | 80 °C/W - Junction-to-ambient thermal resistance; informs PCB copper pad sizing requirements for sustained surge duty cycles. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H), matte tin-plated leads, UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Identical electrical behavior in either direction; no cathode band marking required for bidirectional operation. |
| Case (body) | Thermal and mechanical interface | Contributes to heat dissipation via PCB copper pads; requires minimum 5.0 mm × 5.0 mm copper area per terminal per datasheet fig. 2. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including HTOL, temperature cycling, and ESD testing per stress test plan. |
| Halogen-free & RoHS-compliant | Meets JEDEC JESD201 Class 2 whisker resistance and EU RoHS Directive 2011/65/EU without brominated flame retardants. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving margin for 3.3 V and 5 V logic interfaces. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard SMT reflow without baking; compatible with automated placement and 260 °C peak profile. |
Applications
| Automotive Sensor Protection | Industrial PLC Digital I/O |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and ground, absorbing energy without polarity dependence. Use Value: Maintains signal integrity during 100 V/500 ms load dump events while limiting clamped voltage to ≤26.0 V, safeguarding 3.3 V microcontroller I/O pins. |
Use Scenario: Shielding 24 V digital input modules in programmable logic controllers from field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-mode protector on dry-contact inputs, conducting only during >16 V transients. Use Value: Withstands repeated 500 W surges without degradation, enabling >100,000 switching cycles in harsh factory environments per AEC-Q101 lifetime validation. |
| Telecom Line Interface | Consumer Power Adapter Feedback Path |
Use Scenario: Safeguarding RS-485 transceiver data lines against lightning-induced surges on outdoor telecom links. IC Role / Device Role / Timing Role: Low-capacitance (typ. <50 pF at 0 V) bidirectional clamp shunting transient energy to ground. Use Value: Clamps 1 kV/0.5 μs transients to <26.0 V within <1 ns, preserving signal edge rate and minimizing bit error rate in 10 Mbps links. |
Use Scenario: Protecting optocoupler feedback paths in isolated AC/DC adapters from primary-side MOSFET switching noise coupling. IC Role / Device Role / Timing Role: Secondary-side transient suppressor across TL431 reference input and optocoupler LED anode-cathode. Use Value: Prevents false triggering of voltage regulation loop during 100 V/100 ns ringing, ensuring stable output voltage under dynamic load changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J16CAHE3_A/H | Same electrical specs; RoHS-compliant but not halogen-free; lacks JESD201 Class 2 whisker resistance. | Approved for commercial/industrial use; not qualified for automotive under-hood deployment. | Select when halogen-free requirement is waived and cost optimization is prioritized over automotive qualification. |
| SMA6J16CAHM3_A/H | 600 W PPPM rating (vs. 500 W); identical VWM, VBR, VC; same package and AEC-Q101/halogen-free status. | Supports higher-energy surges (e.g., IEC 61000-4-5 Level 5); slightly larger thermal footprint required for full rating. | Choose when system-level surge testing exceeds 500 W requirements or long-term reliability under repetitive stress is critical. |
Compared with SMA5J16CAHE3_A/H, the SMA5J16CAHM3_A/H adds halogen-free construction and whisker resistance for automotive use; versus SMA6J16CAHM3_A/H, it trades 100 W pulse power headroom for tighter board space and lower cost in applications meeting Level 4 surge immunity.
Availability
SMA5J16CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface designs requiring stable component supply with AEC-Q101 qualification and halogen-free compliance.
Supply support for SMA5J16CAHM3_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 optoelectronics with emphasis on reliability and application-specific performance.
The SMA5JxxCA family is engineered for high-power-density transient suppression in space-constrained, high-reliability systems-particularly automotive, industrial, and telecom infrastructure where bidirectional clamping and AEC-Q101 validation are mandatory.
FAQ
What does the "HM3" suffix indicate in SMA5J16CAHM3_A/H?
The "HM3" suffix in SMA5J16CAHM3_A/H denotes halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance and AEC-Q101 qualification. It distinguishes this variant from E3 (RoHS only) and HE3 (AEC-Q101 but not halogen-free) versions, confirming suitability for automotive under-hood applications per Vishay's ordering nomenclature.
Is SMA5J16CAHM3_A/H unidirectional or bidirectional?
SMA5J16CAHM3_A/H is a bidirectional transient voltage suppressor, as indicated by the "CA" suffix. Its electrical characteristics-including breakdown voltage, clamping voltage, and leakage current-apply identically in both directions, and it carries no polarity marking on the SMA package body.
What is the maximum clamping voltage of SMA5J16CAHM3_A/H at its rated peak pulse current?
The maximum clamping voltage (VC) of SMA5J16CAHM3_A/H is 26.0 V at its rated peak pulse current (IPPM) of 19.2 A, measured under standardized 10/1000 μs waveform conditions per datasheet Table on page 2. This value defines the upper voltage limit imposed on protected circuitry during surge events.
Does SMA5J16CAHM3_A/H require special PCB layout considerations?
Yes-SMA5J16CAHM3_A/H requires minimum 5.0 mm × 5.0 mm copper pads per terminal (per datasheet note) to achieve rated 500 W pulse power and thermal resistance of 80 °C/W. Narrow traces or insufficient copper reduce surge handling capability and increase junction temperature beyond 150 °C during repetitive events.
How is SMA5J16CAHM3_A/H qualified for automotive use?
SMA5J16CAHM3_A/H is AEC-Q101 qualified, meaning it has passed stress tests including high-temperature operating life (HTOL), temperature cycling, mechanical shock, and ESD per the AEC-Q101-001 standard. This qualification is explicitly tied to the HM3 suffix and documented in Vishay's certification records for the SMA5JxxCA-HM3 series.
SMA5J16CAHM3_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):
- 19.2A
- Power - Peak Pulse:
- 500W
- 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)
SMA5J16CAHM3_A/H FAQ
1.How can I place an order for SMA5J16CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J16CAHM3_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 SMA5J16CAHM3_A/H reliable?
The price and inventory of SMA5J16CAHM3_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 SMA5J16CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMA5J16CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J16CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J16CAHM3_A/H?
SMA5J16CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J16CAHM3_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 SMA5J16CAHM3_A/H?
For technical support, including SMA5J16CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J16CAHM3_A/H requirements.
6.How does Aetrix verify that SMA5J16CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMA5J16CAHM3_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 SMA5J16CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMA5J16CAHM3_A/H?
All SMA5J16CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J16CAHM3_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 SMA5J16CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMA5J16CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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