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Vishay General Semiconductor - Diodes Division 5KASMC16AHM3/9A
- Part No.:
- 5KASMC16AHM3/9A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
5KASMC16AHM3/9A.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,823
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Product details
Overview
5KASMC16AHM3/9A from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for high-energy surge protection of sensitive electronics. It features a 16 V stand-off voltage (VWM), 17.8–19.7 V breakdown voltage (VBR) at 1 mA, 5000 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for automotive-grade reliability in power line and signal line protection.
For engineers reviewing the 5KASMC16AHM3/9A datasheet, 5KASMC16AHM3/9A pinout, 5KASMC16AHM3/9A application, or 5KASMC16AHM3/9A equivalent, key selection criteria include clamping voltage (26.0 V at 192.3 A), junction temperature capability up to +185 °C, low reverse leakage (<2.0 μA at VWM), and MSL Level 1 moisture sensitivity with 260 °C reflow compatibility.
Technical Context
The 5KASMC16AHM3/9A employs passivated anisotropic rectifier technology optimized for high-temperature stability and fast response to transient overvoltages. Its unidirectional polarity and 10/1000 μs waveform rating enable robust suppression of inductive switching spikes and lightning-induced surges in DC power rails and signal paths.
With thermal resistance RθJA = 100 °C/W (on minimum pad layout) and RθJM = 20.8 °C/W (to mount), it supports reliable operation under sustained power dissipation up to 6.5 W at TM = 50 °C. The device meets JESD201 Class 2 whisker resistance and UL 94 V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 16 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin for protected circuitry. |
| VBR (Breakdown Voltage) | 17.8–19.7 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients without premature conduction. |
| VC (Clamping Voltage) | 26.0 V at IPPM = 192.3 A - Peak voltage seen by downstream IC/MOSFET during 5000 W surge; critical for I/O voltage tolerance matching. |
| PPPM (Peak Pulse Power) | 5000 W (10/1000 μs) - Energy-handling capacity for standardized surge waveforms; validates suitability for ISO 7637-2/IEC 61000-4-5 compliance testing. |
| TJ max | +185 °C - Enables operation in under-hood automotive environments and industrial enclosures without derating penalties. |
| Polarity | Unidirectional - Requires correct orientation relative to DC rail polarity; cathode marked by band; not suitable for AC or bidirectional protection without external circuitry. |
| MSL Rating | Level 1 per J-STD-020 - Supports standard SMT reflow profiles up to 260 °C peak without preconditioning; simplifies manufacturing integration. |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, molded plastic case with matte tin-plated leads. Cathode indicated by color band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or lower-potential node; completes current path during clamping event. |
| Cathode | High-side connection point | Connected to protected line (e.g., 12 V rail or signal); reverse-biased during normal operation; conducts when Vin exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier structure improves long-term reliability under thermal cycling and humidity stress. |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., load dump), enhancing protection margin for downstream MOSFETs. |
| Fast response time | Sub-nanosecond turn-on enables effective suppression of ESD and fast-switching noise before damage occurs. |
| Halogen-free & RoHS-compliant | HM3 suffix confirms compliance with environmental regulations and material restrictions for global OEM supply chains. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role: Primary clamping element placed between power input and bulk capacitor, shunting surge energy to ground. Use Value: Withstands 5000 W pulses while clamping to ≤26.0 V, preserving voltage ratings of downstream regulators and microcontrollers. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD and cable discharge events in factory automation. IC Role / Device Role: Unidirectional TVS placed across differential pair or single-ended output line to ground. Use Value: Low capacitance (typ. <100 pF at VWM) avoids signal integrity degradation; 2.0 μA leakage preserves sensor accuracy at 16 V bias. |
| Telecom DC Power Input Protection | Consumer Device USB Port Protection |
|
Use Scenario: Safeguarding PoE-powered switches and base stations against lightning-induced surges on 48 V DC inputs. IC Role / Device Role: Front-end TVS on primary DC input, upstream of DC-DC converter and hot-swap controller. Use Value: 185 °C junction rating allows operation in sealed telecom enclosures; MSL Level 1 enables direct placement into high-volume SMT lines. |
Use Scenario: Adding secondary-level surge immunity to USB VBUS lines in smart speakers and portable displays. IC Role / Device Role: Standoff-rated TVS connected between VBUS and GND, sized to clamp without interfering with 5 V regulation. Use Value: 16 V VWM provides 1 V margin above nominal 5 V, preventing false triggering; DO-214AB footprint fits tight board space constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A-E3/5AT (Vishay) | Lower PPPM (400 W), same VWM/VBR range, SMA package (smaller footprint, lower thermal mass) | Suitable for lower-energy transients; limited to consumer-grade ambient temperatures (TJ max = 150 °C) | Select when space-constrained and surge energy is ≤400 W; avoid for automotive or industrial surge standards. |
| 1.5KE16A (ON Semiconductor) | Through-hole DO-201 package, same 16 V VWM, but higher VC (28.5 V at 175 A) and no AEC-Q101 qualification | Requires manual or wave soldering; lacks automotive qualification and high-temp reliability validation | Use only in non-automotive, cost-sensitive designs where PCB real estate and reflow compatibility are not constraints. |
Compared with SMAJ16A-E3/5AT and 1.5KE16A, the 5KASMC16AHM3/9A delivers 12.5× higher surge power handling, automotive-grade temperature and qualification assurance, and SMT-ready packaging-making it the preferred choice for mission-critical 12–48 V DC systems requiring IEC 61000-4-5 or ISO 7637-2 compliance.
Availability
5KASMC16AHM3/9A is available at Aetrix Electronics and suitable for automotive power distribution modules, industrial PLC I/O terminals, and telecom DC power supplies requiring stable component supply, AEC-Q101 traceability, and high-reliability surge immunity.
Supply support for 5KASMC16AHM3/9A 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, efficiency, and application-specific performance.
The 5KASMCxxA series targets high-energy transient protection in harsh environments-designed specifically for automotive, industrial, and telecom infrastructure where AEC-Q101 qualification, 185 °C operation, and 5000 W surge capability are mandatory.
FAQ
What is the maximum clamping voltage of the 5KASMC16AHM3/9A during a 5000 W surge event?
The 5KASMC16AHM3/9A exhibits a maximum clamping voltage (VC) of 26.0 V when subjected to its rated peak pulse current of 192.3 A (corresponding to 5000 W at 10/1000 μs). This value is measured under standardized test conditions per ANSI/IEEE C62.35 and ensures downstream components see voltage limited within safe operational margins.
Is the 5KASMC16AHM3/9A suitable for automotive applications?
Yes, the 5KASMC16AHM3/9A is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood and body-control module applications. Its DO-214AB package, MSL Level 1 rating, and halogen-free HM3 construction meet automotive manufacturing and reliability requirements.
What does the "HM3/9A" suffix indicate in 5KASMC16AHM3/9A?
The "HM3" suffix denotes halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance and AEC-Q101 qualification. "9A" specifies the packaging format: 13-inch diameter plastic tape and reel containing 3500 units-standard for high-volume SMT assembly lines.
How does the 5KASMC16AHM3/9A compare to bidirectional TVS diodes?
The 5KASMC16AHM3/9A is unidirectional and intended for DC line protection where polarity is fixed. Unlike bidirectional variants, it offers lower leakage (<2.0 μA at VWM) and tighter VBR tolerance, but cannot protect AC or floating signals without additional circuitry such as back-to-back configuration.
What is the thermal resistance of the 5KASMC16AHM3/9A on a standard PCB layout?
When mounted on the minimum recommended pad layout per Vishay's datasheet, the 5KASMC16AHM3/9A has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W. This value assumes no heatsink and guides thermal design for continuous power dissipation up to 6.5 W at ambient temperatures ≤50 °C.
5KASMC16AHM3/9A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- PAR®
- 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:
- 26V
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- 5000W (5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
5KASMC16AHM3/9A FAQ
1.How can I place an order for 5KASMC16AHM3/9A through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KASMC16AHM3/9A 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 5KASMC16AHM3/9A reliable?
The price and inventory of 5KASMC16AHM3/9A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KASMC16AHM3/9A is usually 5 days.
3.What payment methods are accepted for 5KASMC16AHM3/9A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KASMC16AHM3/9A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KASMC16AHM3/9A?
5KASMC16AHM3/9A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KASMC16AHM3/9A 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 5KASMC16AHM3/9A?
For technical support, including 5KASMC16AHM3/9A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KASMC16AHM3/9A requirements.
6.How does Aetrix verify that 5KASMC16AHM3/9A is sourced from the original manufacturer or authorized distributors?
All 5KASMC16AHM3/9A 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 5KASMC16AHM3/9A meets industry standards.
7.What is the process for return or replacement of 5KASMC16AHM3/9A?
All 5KASMC16AHM3/9A units undergo pre-shipment inspection (PSI). If there is an issue with 5KASMC16AHM3/9A, 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 5KASMC16AHM3/9A part is unused and in its original packaging.
Return procedure for 5KASMC16AHM3/9A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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