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Vishay General Semiconductor - Diodes Division 3KASMC14AHE3_A/I
- Part No.:
- 3KASMC14AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC14AHE3_A/I.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,791
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Product details
Overview
3KASMC14AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, rated for 14 V stand-off voltage, 15.6–17.2 V breakdown at 1 mA, 3000 W peak pulse power (10/1000 μs), and 185 °C maximum junction temperature - deployed for automotive-grade overvoltage protection of MOSFETs and sensor signal lines.
For engineers reviewing the 3KASMC14AHE3_A/I datasheet, 3KASMC14AHE3_A/I pinout, 3KASMC14AHE3_A/I application, or 3KASMC14AHE3_A/I equivalent, key selection criteria include clamping voltage (23.2 V at 129 A), unidirectional polarity, AEC-Q101 qualification, MSL Level 1 rating, and thermal resistance (RθJA = 77.5 °C/W) under standard PCB mounting.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping performance across -65 °C to +185 °C operating range and withstand repetitive surge events per IEC 61000-4-5. Its low incremental surge resistance and fast response time enable effective suppression of transients induced by inductive load switching.
The device operates exclusively in unidirectional mode with cathode band marking, requires no external biasing, and delivers 23.2 V clamping voltage at 129 A peak pulse current - validated under 10/1000 μs waveform with derating above 25 °C ambient per published curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum reverse stand-off voltage before significant leakage; defines safe operating window for protected circuit. |
| VBR (min/max) | 15.6 V / 17.2 V at 1 mA - Confirmed breakdown threshold ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 23.2 V at 129 A - Clamping voltage limits downstream voltage stress during 3000 W transient surges. |
| PPPM | 3000 W (10/1000 μs) - Peak pulse power handling capacity meets industrial and automotive surge immunity requirements. |
| TJ max | +185 °C - Enables reliable operation in high-temperature engine bay or power electronics environments. |
| RθJA | 77.5 °C/W - Thermal resistance determines junction temperature rise under continuous power dissipation on standard PCB pads. |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive electronic components including temperature cycling and HTRB. |
Pinout & Package
Package: DO-214AB (SMC) - Surface-mount plastic case with matte tin-plated leads, UL 94 V-0 rated molding compound, and cathode band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts during forward surge or DC bias conditions. |
| Cathode | Clamping terminal | Marked with color band; sinks transient current to ground when reverse voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier design improves long-term reliability under high-temperature bias stress. |
| MSL Level 1 | Rated for reflow up to 260 °C peak, eliminating moisture sensitivity concerns during assembly. |
| Low clamping ratio | VC/VBR ≈ 1.37 - Minimizes overvoltage overshoot during transient suppression. |
| High IFSM | 200 A (8.3 ms half-sine) - Supports robust protection against repetitive inrush or fault currents. |
| RoHS & Halogen-Free | Complies with JEDEC JS709A and EU Directive 2011/65/EU - suitable for environmentally regulated markets. |
Applications
| Automotive Powertrain Sensors | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protecting crankshaft/camshaft position sensor signal lines from load dump and alternator ripple transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS clamps reverse transients while allowing normal sensor output swing. Use Value: Prevents latch-up or damage to downstream ASICs with 14 V nominal supply and ±2 kV ESD immunity requirement. |
Use Scenario: Safeguarding gate driver inputs of IGBT modules against switching-induced voltage spikes in variable-frequency drives. IC Role / Device Role / Timing Role: Fast-response TVS absorbs <100 ns rise-time transients before they propagate to control logic. Use Value: Maintains functional safety integrity by limiting gate-source voltage to ≤23.2 V during 3000 W surge events. |
| Telecom Base Station DC Feeds | Consumer Appliance Control Boards |
Use Scenario: Shielding 48 V DC power input stages of remote radio units from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Standoff-rated TVS blocks steady-state leakage while clamping multi-kW transients. Use Value: Achieves IEC 61000-4-5 Level 4 compliance (4 kV line-to-earth) without derating at elevated ambient temperatures. |
Use Scenario: Securing microcontroller GPIOs connected to push-button interfaces exposed to human-body ESD in washing machines or HVAC controllers. IC Role / Device Role / Timing Role: Low-capacitance TVS diverts ESD energy away from sensitive CMOS inputs. Use Value: Provides >15 kV contact ESD protection (IEC 61000-4-2) while maintaining signal integrity below 100 MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14A-E3/57T (Vishay) | Same DO-214AC (SMA) package; lower PPPM (400 W); higher RθJA (110 °C/W); identical VWM/VBR spec. | Limited to low-energy consumer applications; not AEC-Q101 qualified; unsuitable for automotive under-hood use. | Select when cost-sensitive designs require basic protection without high-temp or automotive qualification. |
| 1.5KE15A (ON Semiconductor) | Through-hole DO-201AE package; same VWM/VBR; 1500 W PPPM; 175 °C TJ max; no MSL rating. | Requires wave soldering; incompatible with SMT-only lines; lacks reflow compatibility and automotive traceability. | Choose only for legacy through-hole designs where board real estate and assembly process allow larger footprint. |
Compared with SMAJ14A-E3/57T and 1.5KE15A, the 3KASMC14AHE3_A/I delivers 2× higher surge power, AEC-Q101 validation, MSL Level 1 reflow capability, and superior thermal performance - making it the preferred choice for new automotive and industrial SMT designs requiring long-term reliability at elevated temperatures.
Availability
3KASMC14AHE3_A/I is available at Aetrix Electronics and suitable for automotive powertrain systems, industrial motor drives, telecom base station power feeds, and consumer appliance control boards requiring stable component supply with full traceability and lifecycle management.
Supply support for 3KASMC14AHE3_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 high-reliability and automotive-grade performance.
The 3KASMC series was engineered specifically for AEC-Q101-compliant transient suppression in harsh-environment applications - targeting engine control units, battery management systems, and industrial automation where thermal stability and surge robustness are critical.
FAQ
What is the clamping voltage of the 3KASMC14AHE3_A/I under maximum surge conditions?
The 3KASMC14AHE3_A/I exhibits a maximum clamping voltage (VC) of 23.2 V when subjected to its rated peak pulse current of 129 A using the standardized 10/1000 μs waveform. This value is measured at TA = 25 °C and confirms the device's ability to limit transient overvoltage to a safe level for downstream 15 V-rated ICs. The 3KASMC14AHE3_A/I maintains this clamping performance across its full operating temperature range.
Is the 3KASMC14AHE3_A/I suitable for automotive under-hood applications?
Yes, the 3KASMC14AHE3_A/I is AEC-Q101 qualified and rated for a maximum junction temperature of +185 °C, making it suitable for under-hood automotive applications such as engine control modules and transmission control units. Its DO-214AB (SMC) package supports MSL Level 1 reflow processing, and its passivated junction ensures long-term reliability under thermal cycling and high-humidity conditions typical in engine compartments. The 3KASMC14AHE3_A/I meets these requirements without derating.
How does the 3KASMC14AHE3_A/I differ from standard SMAJ-series TVS diodes?
The 3KASMC14AHE3_A/I provides 3000 W peak pulse power versus 400 W for SMAJ14A, operates up to +185 °C (vs. +150 °C), and is AEC-Q101 qualified - whereas SMAJ devices lack automotive qualification and thermal robustness. The 3KASMC14AHE3_A/I also features lower RθJA (77.5 °C/W vs. ~110 °C/W), enabling better thermal management on standard PCB layouts. These differences make the 3KASMC14AHE3_A/I appropriate for next-generation automotive and industrial designs.
What is the meaning of the "_A/I" suffix in 3KASMC14AHE3_A/I?
The "_A/I" suffix in 3KASMC14AHE3_A/I denotes the packaging configuration: "A" indicates the base part meets RoHS and AEC-Q101 requirements, and "I" specifies 13-inch diameter plastic tape-and-reel delivery containing 3500 units. This format ensures compatibility with high-speed SMT placement equipment and supports traceable, volume production. The 3KASMC14AHE3_A/I is distinct from variants like _A/H (7-inch reel, 850 units) and guarantees consistent mechanical and electrical specifications.
Does the 3KASMC14AHE3_A/I support bidirectional transient suppression?
No, the 3KASMC14AHE3_A/I is strictly unidirectional - it protects against reverse-biased transients only and must be oriented with the cathode band toward the protected line's higher potential. It does not suppress positive-going transients on the anode side. For bidirectional protection, two 3KASMC14AHE3_A/I devices would need back-to-back configuration, or a dedicated bidirectional TVS such as the 3KASMC14CA series should be selected instead.
3KASMC14AHE3_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):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 129A
- 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)
3KASMC14AHE3_A/I FAQ
1.How can I place an order for 3KASMC14AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC14AHE3_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 3KASMC14AHE3_A/I reliable?
The price and inventory of 3KASMC14AHE3_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 3KASMC14AHE3_A/I is usually 5 days.
3.What payment methods are accepted for 3KASMC14AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC14AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC14AHE3_A/I?
3KASMC14AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC14AHE3_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 3KASMC14AHE3_A/I?
For technical support, including 3KASMC14AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC14AHE3_A/I requirements.
6.How does Aetrix verify that 3KASMC14AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All 3KASMC14AHE3_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 3KASMC14AHE3_A/I meets industry standards.
7.What is the process for return or replacement of 3KASMC14AHE3_A/I?
All 3KASMC14AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC14AHE3_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 3KASMC14AHE3_A/I part is unused and in its original packaging.
Return procedure for 3KASMC14AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3KASMC14AHE3_A/I Tags
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