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Vishay General Semiconductor - Diodes Division SMA5J16CAHM3_A/I
- Part No.:
- SMA5J16CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J16CAHM3_A/I.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,387
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Product details
Overview
SMA5J16CAHM3_A/I 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 at 19.2 A peak pulse current (IPPM), and 500 W peak pulse power rating with 10/1000 μs waveform. Used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial control systems.
For engineers reviewing the SMA5J16CAHM3_A/I datasheet, SMA5J16CAHM3_A/I pinout, SMA5J16CAHM3_A/I application, or SMA5J16CAHM3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, and thermal resistance (RθJA = 80 °C/W) for board-level reliability under repetitive surge stress.
Technical Context
This device operates as a voltage-clamped crowbar during transients, leveraging an avalanche breakdown mechanism with glass-passivated junction for stable VBR (17.8–19.7 V) and low incremental surge resistance. Its bidirectional symmetry ensures identical clamping behavior in both polarities, eliminating polarity-sensitive layout constraints.
Designed for surface-mount automation, it meets MSL level 1 (260 °C peak reflow) and JESD201 class 2 whisker resistance. The SMA package provides mechanical robustness while enabling thermal dissipation via copper pad mounting per recommended 5.0 mm × 5.0 mm layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal swing margin in protected circuit. |
| VBR min/max | 17.8 V / 19.7 V - Breakdown voltage range at 1 mA test current; ensures predictable turn-on threshold across production lot. |
| VC @ IPPM | 26.0 V at 19.2 A - Clamping voltage under 10/1000 μs surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 500 W - Peak pulse power handling capacity; supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly mounted. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments with minimal derating. |
| RθJA | 80 °C/W - Junction-to-ambient thermal resistance; requires ≥5.0 mm × 5.0 mm copper pads per terminal for rated power dissipation. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional - no polarity marking; symmetrical two-terminal construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (both terminals) | Surge current path | Identical bidirectional conduction; either terminal serves as input or return path depending on transient polarity. |
| Case (body) | Thermal interface | Non-electrical; transfers heat to PCB copper pads; no electrical isolation required between case and ground plane. |
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-grade reliability including temperature cycling, HTRB, and ESD testing per stress requirements. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC JS709C; supports environmentally constrained industrial and automotive BOMs. |
| Low RθJL (25 °C/W) | Enables efficient heat transfer from junction to lead, reducing thermal runaway risk during repeated surges. |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output lines of engine coolant temperature sensors exposed to load-dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤26.0 V, preventing ADC saturation and internal ESD diode failure in MCU. |
Use Scenario: Guarding CAN_H and CAN_L differential pair against ESD and inductive switching noise in factory automation nodes. IC Role / Device Role / Timing Role: Two SMA5J16CAHM3_A/I devices deployed in back-to-back configuration across CAN bus lines. Use Value: Maintains signal integrity by clamping common-mode surges up to ±16 V without affecting 1–5 Mbps data timing. |
| Power Supply Input Stage | Consumer Appliance Motor Control |
Use Scenario: Safeguarding 12 V DC input rails of embedded controllers in HVAC control boards subjected to relay coil flyback. IC Role / Device Role / Timing Role: Parallel-connected TVS across input capacitor to absorb 500 W surge energy within 1 ms. Use Value: Prevents overvoltage shutdown of buck converter ICs by limiting rail excursion to 26.0 V during 10/1000 μs events. |
Use Scenario: Shielding gate drivers and current-sense amplifiers in washing machine motor inverters from PWM-induced dv/dt coupling. IC Role / Device Role / Timing Role: Localized TVS at driver output pins to suppress fast-rising edge transients coupled through parasitic capacitance. Use Value: Reduces false triggering of overcurrent protection by clamping sub-100 ns spikes below 26.0 V threshold. |
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/I | Same electrical specs; RoHS-compliant but not halogen-free; AEC-Q101 qualified. | Acceptable where halogen content is unrestricted; lower cost alternative for non-automotive industrial use. | Select when halogen-free requirement is waived and cost sensitivity outweighs material compliance tier. |
| SMA5J16A-HM3_A/I | Unidirectional version; same VWM (16 V), VC (26.0 V), PPPM (500 W); cathode band marking required. | Only suitable for DC-biased lines with known polarity; cannot protect AC or floating signals. | Choose only if circuit topology guarantees fixed polarity and space allows explicit cathode orientation. |
Compared with SMA5J16CAHM3_A/I, SMA5J16CAHE3_A/I offers identical performance with relaxed material compliance, while SMA5J16A-HM3_A/I trades bidirectional flexibility for unidirectional optimization-requiring careful polarity validation in layout.
Availability
SMA5J16CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN networks, and consumer appliance motor control systems requiring stable component supply with full AEC-Q101 traceability and halogen-free compliance.
Supply support for SMA5J16CAHM3_A/I 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, and protection devices with emphasis on reliability, power density, and automotive qualification.
The SMA5J series was developed to deliver high-power transient suppression in compact surface-mount packages for harsh-environment applications including automotive powertrain and ADAS subsystems.
FAQ
What is the clamping voltage of SMA5J16CAHM3_A/I at its rated peak pulse current?
The SMA5J16CAHM3_A/I clamps to a maximum of 26.0 V when subjected to its rated peak pulse current of 19.2 A under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and verified across production lots. The SMA5J16CAHM3_A/I maintains this clamping performance bidirectionally, making it suitable for protecting symmetric signal paths where polarity reversal may occur during transients.
Is SMA5J16CAHM3_A/I qualified for automotive applications?
Yes, SMA5J16CAHM3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation in datasheet 88875. It undergoes stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD verification per automotive reliability standards. The SMA5J16CAHM3_A/I is intended for use in engine control units, body electronics, and infotainment systems where sustained operation at +125 °C ambient is required.
How does the halogen-free status of SMA5J16CAHM3_A/I impact its compliance profile?
The "HM3" suffix in SMA5J16CAHM3_A/I denotes halogen-free, RoHS-compliant construction meeting JEDEC JS709C and IEC 61249-2-21 standards. This eliminates brominated flame retardants and chlorine-based compounds from the molding compound and plating system. The SMA5J16CAHM3_A/I satisfies strict environmental mandates for automotive Tier 1 suppliers and industrial equipment exported to EU, Japan, and South Korea markets.
What is the thermal resistance of SMA5J16CAHM3_A/I, and how should it be applied in layout?
The SMA5J16CAHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay's recommended pad layout. To achieve rated 500 W pulse power handling, designers must replicate this copper area and ensure solder joint integrity. The SMA5J16CAHM3_A/I also exhibits RθJL = 25 °C/W, indicating efficient heat transfer to the leads for localized thermal relief.
Can SMA5J16CAHM3_A/I replace unidirectional TVS diodes in existing designs?
SMA5J16CAHM3_A/I can replace unidirectional variants like SMA5J16A-HM3_A/I only if the circuit is inherently bidirectional or polarity-agnostic-such as AC-coupled data lines or floating sensor outputs. It must not be used where DC bias polarity is fixed and reverse leakage must be minimized, since SMA5J16CAHM3_A/I exhibits symmetrical leakage at VWM. Always verify signal swing margins and transient directionality before substituting SMA5J16CAHM3_A/I in legacy unidirectional layouts.
SMA5J16CAHM3_A/I 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/I FAQ
1.How can I place an order for SMA5J16CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J16CAHM3_A/I 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/I reliable?
The price and inventory of SMA5J16CAHM3_A/I 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/I is usually 5 days.
3.What payment methods are accepted for SMA5J16CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J16CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J16CAHM3_A/I?
SMA5J16CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J16CAHM3_A/I 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/I?
For technical support, including SMA5J16CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J16CAHM3_A/I requirements.
6.How does Aetrix verify that SMA5J16CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMA5J16CAHM3_A/I 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/I meets industry standards.
7.What is the process for return or replacement of SMA5J16CAHM3_A/I?
All SMA5J16CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J16CAHM3_A/I, 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/I part is unused and in its original packaging.
Return procedure for SMA5J16CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J16CAHM3_A/I Tags
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