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Vishay General Semiconductor - Diodes Division SMAJ16CA-001HM3/H
- Part No.:
- SMAJ16CA-001HM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ16CA-001HM3/H.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,056
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Product details
Overview
SMAJ16CA-001HM3/H 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 a 16 V standoff voltage (VWM), 26.0 V maximum clamping voltage (VC) at 15.4 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 μs waveform), targeting protection of MOSFETs, ICs, and sensor signal lines in automotive and industrial environments.
For engineers reviewing the SMAJ16CA-001HM3/H datasheet, SMAJ16CA-001HM3/H pinout, SMAJ16CA-001HM3/H application, or SMAJ16CA-001HM3/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), junction temperature range (–55 to +150 °C), and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This device operates as a voltage-clamping protector using an avalanche breakdown mechanism, with symmetrical reverse/forward characteristics due to its bidirectional construction. It responds within <1 ps to transient overvoltages and maintains low incremental surge resistance to minimize let-through energy during ESD or lightning-induced surges.
The SMAJ16CA-001HM3/H is rated for 400 W peak pulse power (derated to 300 W above 78 V), supports repetitive surge duty cycles up to 0.01 %, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak temperature tolerance - confirming suitability for high-reliability automated SMT assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR min/max | 17.8 V / 19.7 V - Breakdown voltage range at 1 mA test current; ensures consistent turn-on threshold across production lots. |
| VC @ IPPM | 26.0 V - Clamped voltage at 15.4 A peak pulse current; determines maximum stress imposed on protected downstream circuitry. |
| IPPM | 15.4 A - Peak pulse current supported under 10/1000 μs waveform; directly relates to surge energy handling (400 W). |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial settings. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs PCB thermal design requirements. |
| Package | SMA (DO-214AC) - Surface-mount outline with 2.54 mm lead pitch; compatible with standard pick-and-place and reflow processes. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, polarity-unmarked for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | Acts as cathode during positive transients and anode during negative transients; no physical marking required. |
| Cathode | Transient current exit (bidirectional) | Acts as anode during positive transients and cathode during negative transients; symmetric conduction path. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global OEM supply chains (HM3 suffix designation). |
| 400 W peak pulse power | Handles IEC 61000-4-5 Level 4 surge events (4 kV/2 Ω) when properly mounted on recommended copper pads. |
| MSL Level 1 rating | Supports unlimited floor life and standard reflow profiles up to 260 °C peak, eliminating bake-out requirements. |
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: Voltage clamping element placed between signal line and ground, absorbing transient energy before it reaches sensitive interface ICs. Use Value: Limits induced voltage to ≤26.0 V during 15.4 A surges, preserving signal integrity and preventing latch-up in microcontrollers and transceivers. | Use Scenario: Shielding digital input/output terminals of programmable logic controllers from inductive switching spikes in factory automation systems. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor across each I/O channel, providing fast-response overvoltage shutdown path to chassis ground. Use Value: Withstands repeated 400 W surges without degradation, ensuring long-term reliability in harsh electromagnetic environments. |
| Consumer Power Adapter Protection | Telecom Line Interface Protection |
Use Scenario: Safeguarding secondary-side DC outputs of AC/DC adapters against ESD and capacitive coupling transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across output rails to clamp both positive and negative excursions relative to common reference. Use Value: Maintains 16 V nominal operating window while suppressing >200 V transients within nanoseconds, preventing damage to downstream regulators and USB controllers. | Use Scenario: Protecting Ethernet PHY interfaces and DSL line drivers from lightning-induced surges entering via RJ-45 jacks. IC Role / Device Role / Timing Role: Differential-mode suppressor bridging twisted-pair lines, leveraging symmetrical breakdown to preserve signal balance. Use Value: Delivers 26.0 V clamping at 15.4 A with <1 ps response, minimizing bit errors and maintaining signal fidelity 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 |
|---|---|---|---|
| SMAJ16CAHE3/H | Same electrical specs; RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification. | Suitable for commercial-grade designs where automotive qualification is not required. | Select when halogen content or automotive qualification are not mandated by end-equipment standards. |
| SMBJ16CA-HM3 | Same VWM/VC, but SMB package (DO-214AA); higher RθJA (100 °C/W), lower IPPM (13.7 A), same 400 W rating. | Offers larger creepage/clearance; preferred where board space allows and higher surge margin is needed. | Choose for enhanced thermal performance in high-power density layouts or where larger pad area improves reliability. |
Compared with SMAJ16CA-001HM3/H, SMAJ16CAHE3/H omits halogen-free and AEC-Q101 compliance, while SMBJ16CA-HM3 trades smaller footprint for improved thermal dissipation and slightly reduced surge current capacity - making each suitable for distinct mechanical, regulatory, or reliability constraints.
Availability
SMAJ16CA-001HM3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMAJ16CA-001HM3/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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMAJ series was developed for robust, surface-mount transient suppression in space-constrained and high-surge environments - particularly targeting automotive, industrial, and communications infrastructure where AEC-Q101 compliance and repeatable clamping performance are critical.
FAQ
What is the clamping voltage of the SMAJ16CA-001HM3/H under maximum rated surge current?
The SMAJ16CA-001HM3/H has a maximum clamping voltage (VC) of 26.0 V at its rated peak pulse current (IPPM) of 15.4 A, measured with a 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during transient events and is guaranteed across the full operating temperature range (–55 °C to +150 °C). The SMAJ16CA-001HM3/H achieves this clamping performance while maintaining bidirectional symmetry and low dynamic impedance.
Is the SMAJ16CA-001HM3/H qualified for automotive applications?
Yes, the SMAJ16CA-001HM3/H is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's official datasheet (Document Number: 88390, Revision: 09-Jan-2024). This qualification validates its reliability for use in automotive subsystems including engine control, body electronics, and ADAS sensors. The SMAJ16CA-001HM3/H also meets MSL Level 1 and supports reflow up to 260 °C, enabling compatibility with automotive manufacturing processes.
What does the "HM3" suffix indicate in SMAJ16CA-001HM3/H?
The "HM3" suffix in SMAJ16CA-001HM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Specifically, "H" indicates AEC-Q101 qualification, "M3" confirms halogen-free and RoHS compliance, and the trailing "/H" refers to the packaging variant (7" tape and reel, 1800 units per reel). This distinguishes it from non-automotive variants like E3 (RoHS only) or HE3 (AEC-Q101 but not halogen-free). The SMAJ16CA-001HM3/H thus satisfies stringent environmental and reliability requirements for Tier 1 automotive suppliers.
How does the bidirectional design of SMAJ16CA-001HM3/H affect its circuit placement?
The bidirectional design of SMAJ16CA-001HM3/H eliminates polarity sensitivity, allowing it to be placed across any two nodes requiring symmetrical overvoltage protection - such as differential signal pairs, AC-coupled lines, or floating power rails. Unlike unidirectional TVS diodes, SMAJ16CA-001HM3/H has no cathode band marking and conducts identically in both directions above its breakdown threshold. This simplifies layout, reduces BOM complexity, and avoids orientation-related assembly errors in high-volume SMT production.
What is the thermal resistance of SMAJ16CA-001HM3/H, and how does it impact PCB layout?
The SMAJ16CA-001HM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard FR-4 PCB construction and dictates minimum copper area requirements to maintain junction temperature within the –55 °C to +150 °C operating range during repetitive surge events. To optimize thermal performance, designers should maximize pad size and consider internal ground/power planes connected via multiple vias - especially for applications involving frequent transients. The SMAJ16CA-001HM3/H's RθJA directly influences sustained power dissipation limits (PD = 3.3 W).
SMAJ16CA-001HM3/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:
- Discontinued at Digi-Key
- 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-001HM3/H FAQ
1.How can I place an order for SMAJ16CA-001HM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ16CA-001HM3/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-001HM3/H reliable?
The price and inventory of SMAJ16CA-001HM3/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-001HM3/H is usually 5 days.
3.What payment methods are accepted for SMAJ16CA-001HM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ16CA-001HM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ16CA-001HM3/H?
SMAJ16CA-001HM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ16CA-001HM3/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-001HM3/H?
For technical support, including SMAJ16CA-001HM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ16CA-001HM3/H requirements.
6.How does Aetrix verify that SMAJ16CA-001HM3/H is sourced from the original manufacturer or authorized distributors?
All SMAJ16CA-001HM3/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-001HM3/H meets industry standards.
7.What is the process for return or replacement of SMAJ16CA-001HM3/H?
All SMAJ16CA-001HM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ16CA-001HM3/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-001HM3/H part is unused and in its original packaging.
Return procedure for SMAJ16CA-001HM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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