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Vishay General Semiconductor - Diodes Division 3KASMC16AHE3_A/I
- Part No.:
- 3KASMC16AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC16AHE3_A/I.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,804
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Product details
Overview
3KASMC16AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, rated for 16 V stand-off voltage (VWM), 17.8–19.7 V breakdown (VBR), 3000 W peak pulse power (10/1000 μs), 115 A peak surge current (IPPM), and 26.0 V clamping voltage (VC) at IPPM - deployed for automotive power line and sensor signal line protection.
For engineers reviewing the 3KASMC16AHE3_A/I datasheet, 3KASMC16AHE3_A/I pinout, 3KASMC16AHE3_A/I application, or 3KASMC16AHE3_A/I equivalent, key selection criteria include AEC-Q101 qualification, TJ = 185 °C operation, MSL Level 1 moisture sensitivity, uni-directional polarity with cathode band marking, and 3000 W transient handling capability under standardized surge waveforms.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping performance across -65 °C to +185 °C junction temperature range. Its low incremental surge resistance and fast response time enable effective suppression of inductive-switching transients and ESD events on sensitive nodes.
The device operates exclusively in uni-directional mode with defined forward conduction path and reverse avalanche clamping behavior. It meets JESD22-B102 solderability standards and JESD201 Class 2 whisker resistance requirements when specified with HM3 suffix - confirmed for 3KASMC16AHE3_A/I via Vishay's ordering code structure and qualification documentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC bias margin for protected circuitry. |
| VBR (min/max) | 17.8 V / 19.7 V at IT = 1.0 mA - verified avalanche breakdown threshold ensuring predictable turn-on during overvoltage events. |
| VC @ IPPM | 26.0 V at 115 A - clamped voltage during 3000 W 10/1000 μs surge; determines worst-case stress on downstream components. |
| PPPM | 3000 W - peak pulse power rating per standard waveform; enables robust protection against ISO 7637-2 Pulse 1/2a/5a and similar automotive transients. |
| TJ max. | +185 °C - extended junction temperature rating supporting under-hood automotive applications without derating penalties. |
| IFSM | 200 A - non-repetitive forward surge current (8.3 ms half-sine); supports high-energy fault clearing in power rail protection. |
| Polarity | Uni-directional - provides forward conduction path and reverse avalanche clamping; requires correct orientation in series with protected line. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, cathode indicated by color band. Complies with UL 94 V-0 flammability rating and MSL Level 1 (260 °C reflow peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / clamping reference node | Connected to lower-potential side of protected line; establishes forward conduction path and defines clamping polarity. |
| Cathode | Avalanche clamping terminal / surge return path | Marked with color band; connected to higher-potential side or ground; conducts reverse avalanche current during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable leakage performance (<1.0 μA at VWM) and long-term reliability under thermal cycling and humidity exposure. |
| AEC-Q101 qualification | Validated for automotive-grade use including temperature cycling, HTRB, and mechanical shock per JEDEC standards. |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing at 260 °C peak without preconditioning or baking. |
| Low RSURGE | Minimizes voltage overshoot during fast-rising transients (e.g., ESD, load dump), improving system-level immunity. |
| High TJ capability (185 °C) | Eliminates need for thermal derating in engine control units, battery management systems, and other high-ambient environments. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Suppresses load-dump transients (ISO 7637-2 Pulse 5a) on 12 V battery-fed ECUs in passenger vehicles and commercial trucks. IC Role / Device Role / Timing Role: Standby clamping device placed between battery input and upstream DC/DC converter or LDO regulator. Use Value: Limits peak voltage to ≤26.0 V during 3000 W surges, preventing damage to 30 V-rated power ICs and enabling compliance with OEM electrical specifications. |
Use Scenario: Protects analog outputs of pressure, temperature, and position sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Uni-directional shunt clamp on 4–20 mA or 0–10 V signal lines exposed to relay coil switching noise. Use Value: Clamps induced spikes within 1 ns response time while maintaining <1.0 μA leakage at 16 V, preserving signal integrity and measurement accuracy. |
| Telecom Power Interface Protection | Consumer Device USB/Power Input Protection |
Use Scenario: Safeguards PoE-powered network switches and base station RF front-end supplies against lightning-induced surges on DC input rails. IC Role / Device Role / Timing Role: Primary transient suppressor on secondary-side 48 V DC distribution bus prior to point-of-load regulators. Use Value: Handles 115 A peak current at 26.0 V clamping level, reducing stress on downstream MOSFETs and enabling compact heatsink-free designs. |
Use Scenario: Shields USB-C PD input stages and internal battery charging circuits in portable medical monitors and smart home hubs. IC Role / Device Role / Timing Role: Front-end TVS on 5–20 V input path, coordinated with fuse and current-limiting IC for multi-layer protection. Use Value: Provides AEC-Q101-grade reliability and 185 °C operation even in sealed enclosures, extending product lifetime beyond consumer-grade alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A-E3/57T (Vishay) | Same DO-214AC (SMA) package; lower PPPM (400 W), lower IPPM (32.4 A), same VWM/VBR range; not AEC-Q101 qualified. | Limited to non-automotive industrial or consumer use where surge energy is lower and qualification not required. | Select when cost sensitivity outweighs automotive qualification and 3000 W surge headroom is unnecessary. |
| 1.5KE16A (ON Semiconductor) | Through-hole DO-201AE package; 1500 W PPPM; 62.0 A IPPM; 26.5 V VC; AEC-Q101 not claimed; higher thermal resistance (RθJA ≈ 120 °C/W). | Suitable for prototyping or legacy board upgrades but incompatible with SMT production and high-density layouts. | Choose only for manual assembly or retrofit scenarios where reflow compatibility and space constraints are not limiting. |
Compared with SMAJ16A-E3/57T and 1.5KE16A, the 3KASMC16AHE3_A/I delivers 7.5× higher peak pulse power in an AEC-Q101-qualified SMT package with superior thermal performance (RθJL = 18.3 °C/W), making it the preferred choice for volume automotive and industrial applications requiring validated reliability and high-energy transient immunity.
Availability
3KASMC16AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power supply protection requiring stable component supply, AEC-Q101 compliance, and high-temperature operational assurance.
Supply support for 3KASMC16AHE3_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, TVS devices, and optoelectronics with emphasis on reliability, high-temperature operation, and automotive qualification.
The 3KASMC series was designed specifically for high-energy transient suppression in harsh-environment automotive and industrial systems, targeting applications demanding AEC-Q101 validation, 185 °C operation, and 3000 W surge capability in compact SMT packages.
FAQ
What is the clamping voltage of the 3KASMC16AHE3_A/I at its rated peak pulse current?
The 3KASMC16AHE3_A/I has a maximum clamping voltage (VC) of 26.0 V when subjected to its rated peak pulse current (IPPM) of 115 A under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and ensures predictable voltage limiting during surge events, directly protecting downstream 30 V-rated ICs in automotive and industrial power systems.
Is the 3KASMC16AHE3_A/I qualified to AEC-Q101 standards?
Yes, the 3KASMC16AHE3_A/I is explicitly AEC-Q101 qualified, as confirmed in Vishay's Document Number 89962 (Revision 05-Mar-13), Section "MECHANICAL DATA" and "ORDERING INFORMATION". This qualification covers temperature cycling, high-temperature reverse bias (HTRB), and mechanical shock testing, validating its suitability for automotive under-hood and chassis applications.
What does the '_A/I' suffix indicate in the 3KASMC16AHE3_A/I part number?
The '_A/I' suffix in 3KASMC16AHE3_A/I denotes the packaging configuration: 'A' indicates the HM3 base variant (RoHS-compliant, AEC-Q101 qualified), and 'I' specifies the 13-inch diameter plastic tape-and-reel delivery mode with a base quantity of 3500 units. This matches Vishay's documented ordering convention in the "ORDERING INFORMATION" section of datasheet 89962.
Can the 3KASMC16AHE3_A/I be used in bi-directional protection circuits?
No, the 3KASMC16AHE3_A/I is strictly a uni-directional TVS diode, as stated in the "FEATURES" section of its datasheet. It provides avalanche clamping only in reverse bias and conducts forward current like a standard diode; for bi-directional protection, a separate device such as the 3KASMC16CAHE3_A/I (if available) or dual-series configuration would be required.
What is the maximum operating junction temperature for the 3KASMC16AHE3_A/I?
The 3KASMC16AHE3_A/I has a maximum operating junction temperature (TJ max.) of +185 °C, verified per the "PRIMARY CHARACTERISTICS" table in Vishay's datasheet 89962. This rating enables reliable operation in high-ambient environments such as engine compartments and industrial motor drives without thermal derating up to this limit.
3KASMC16AHE3_A/I 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):
- 115A
- Power - Peak Pulse:
- 3000W (3kW)
- 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)
3KASMC16AHE3_A/I FAQ
1.How can I place an order for 3KASMC16AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC16AHE3_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 3KASMC16AHE3_A/I reliable?
The price and inventory of 3KASMC16AHE3_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 3KASMC16AHE3_A/I is usually 5 days.
3.What payment methods are accepted for 3KASMC16AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC16AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC16AHE3_A/I?
3KASMC16AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC16AHE3_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 3KASMC16AHE3_A/I?
For technical support, including 3KASMC16AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC16AHE3_A/I requirements.
6.How does Aetrix verify that 3KASMC16AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All 3KASMC16AHE3_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 3KASMC16AHE3_A/I meets industry standards.
7.What is the process for return or replacement of 3KASMC16AHE3_A/I?
All 3KASMC16AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC16AHE3_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 3KASMC16AHE3_A/I part is unused and in its original packaging.
Return procedure for 3KASMC16AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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