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Vishay General Semiconductor - Diodes Division 3KASMC15AHE3_A/I
- Part No.:
- 3KASMC15AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC15AHE3_A/I.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,943
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Product details
Overview
3KASMC15AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in DO-214AB (SMC) package, rated for 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown (VBR), 3000 W peak pulse power (10/1000 μs), 24.4 V clamping voltage at 123 A surge current, and qualified to AEC-Q101 for automotive electronics protection.
For engineers reviewing the 3KASMC15AHE3_A/I datasheet, 3KASMC15AHE3_A/I pinout, 3KASMC15AHE3_A/I application, or 3KASMC15AHE3_A/I equivalent, key selection criteria include clamping performance under 10/1000 μs transients, TJ = 185 °C junction rating for under-hood environments, unidirectional polarity alignment with DC rail protection, and SMC package thermal resistance (RθJL = 18.3 °C/W).
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. It delivers fast response time and excellent clamping capability with a 10/1000 μs waveform, meeting IEC 61000-4-5 surge immunity requirements for automotive and industrial systems.
The device operates across -65 °C to +185 °C junction temperature range and is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine). Its unidirectional configuration protects DC power rails and signal lines where reverse conduction must be blocked during normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 12 V automotive systems. |
| VBR (min/max) | 16.7 V / 18.5 V at 1 mA - Confirmed breakdown threshold ensures reliable turn-on during transients without premature conduction. |
| VC @ IPPM | 24.4 V at 123 A - Clamping voltage limits downstream IC stress during 3000 W surge events; critical for MOSFET gate and sensor interface protection. |
| PPPM | 3000 W (10/1000 μs) - Peak transient energy handling capacity validated per ANSI/IEEE C62.35; supports ISO 7637-2 Pulse 1/2/5a compliance. |
| TJ max | +185 °C - Enables placement near heat sources (e.g., engine control units) without derating; exceeds standard AEC-Q101 requirement. |
| Package | DO-214AB (SMC) - Industry-standard surface-mount outline with 7.11 mm × 6.60 mm footprint and 3.20 mm height; compatible with automated reflow assembly. |
| AEC-Q101 | Qualified - Certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22-A110/A111. |
Pinout & Package
DO-214AB (SMC) package with cathode indicated by color band on one end; two-terminal device with no internal circuitry requiring orientation beyond polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | DC return path / low-side connection | Connected to ground or lower-potential node; conducts during positive transients when cathode is biased above anode. |
| Cathode | Protected line input / high-side connection | Connected to supply rail or signal line; clamps voltage by shunting surge current to anode when reverse-biased beyond VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier structure enhances long-term reliability under thermal cycling and humidity exposure. |
| MSL Level 1 | Moisture sensitivity level 1 per J-STD-020 enables unlimited floor life and reflow at 260 °C peak without baking. |
| Low RSURGE | Minimal incremental surge resistance ensures stable clamping voltage across wide current range (10–123 A). |
| Matte tin plating | RoHS-compliant terminals meet J-STD-002 solderability and JESD22-B102 wetting requirements for lead-free assembly. |
| UL 94 V-0 molding | Flame-retardant epoxy compound prevents propagation of ignition in high-energy fault conditions. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator ripple transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC converter input. Use Value: Clamps to 24.4 V at 123 A, limiting stress on downstream regulators while surviving 185 °C under-hood temperatures. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Low-capacitance TVS on 4–20 mA loop or 0–10 V output line. Use Value: Fast response and 24.4 V clamping prevent latch-up or damage to precision op-amps and ADC front-ends. |
| Consumer Power Adapter Input Stage | Telecom DC Power Distribution |
|
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS across bulk capacitor output to absorb residual transients. Use Value: 3000 W peak power rating handles repetitive 10/1000 μs events without degradation; UL 94 V-0 housing meets safety standards. |
Use Scenario: Board-level protection for -48 V telecom power feeds exposed to switching noise and hot-swap transients. IC Role / Device Role / Timing Role: Unidirectional clamp on distributed power bus feeding multiple line cards. Use Value: 15 V VWM allows compatibility with -48 V nominal systems using negative-rail referencing; AEC-Q101 qualification ensures field longevity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A | Same DO-214AC (SMA) package; lower PPPM (400 W); VBR 16.7–18.5 V; RθJA = 100 °C/W (vs. 77.5 °C/W for 3KASMC15AHE3_A/I) | Limited to low-energy consumer applications; insufficient for automotive load dump or industrial surge testing. | Select only when space-constrained layouts prohibit SMC footprint and surge energy is ≤400 W. |
| SMCJ15A | Same DO-214AB (SMC) package; identical VWM/VBR/VC ratings; 1500 W PPPM (half of 3KASMC15AHE3_A/I); TJ max = 175 °C | Meets basic IEC 61000-4-5 Level 3 but not Level 4; unsuitable for AEC-Q101-critical automotive modules. | Use where cost sensitivity outweighs need for 3000 W surge margin and 185 °C operation. |
Compared with SMAJ15A and SMCJ15A, the 3KASMC15AHE3_A/I provides 2× higher peak power handling, 10 °C higher junction limit, and 23 % lower thermal resistance-enabling robust protection in high-reliability automotive and industrial power domains without layout change.
Availability
3KASMC15AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, telecom power distribution systems, and consumer power adapter designs requiring stable component supply and AEC-Q101 assurance.
Supply support for 3KASMC15AHE3_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, thermal performance, and automotive qualification.
The 3KASMC series is engineered specifically for high-energy transient suppression in harsh-environment applications-including engine compartments, factory automation, and outdoor telecom infrastructure-leveraging passivated junction technology and extended temperature capability.
FAQ
What is the maximum clamping voltage of the 3KASMC15AHE3_A/I under a 10/1000 μs surge?
The 3KASMC15AHE3_A/I clamps to a maximum of 24.4 V when subjected to its rated peak pulse current of 123 A (10/1000 μs waveform). This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 05-Mar-13, ensuring predictable overvoltage limiting for protected circuits.
Is the 3KASMC15AHE3_A/I suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the 3KASMC15AHE3_A/I is explicitly AEC-Q101 qualified per the Vishay datasheet (Document Number: 89962), covering temperature cycling, high-temperature reverse bias, and ESD testing. Its 185 °C maximum junction temperature and DO-214AB package make it appropriate for under-hood ECUs and ADAS power supplies.
What does the "_A/I" suffix indicate in the 3KASMC15AHE3_A/I part number?
The "_A/I" suffix denotes the packaging configuration: "A" indicates the base P/NHM3 variant (RoHS-compliant and AEC-Q101 qualified), and "I" specifies 13-inch diameter plastic tape and reel delivery mode with 3500 units per reel, per Vishay's ordering information table.
How does the thermal resistance of the 3KASMC15AHE3_A/I compare to standard SMA-packaged TVS diodes?
The 3KASMC15AHE3_A/I has a typical junction-to-leads thermal resistance (RθJL) of 18.3 °C/W and junction-to-ambient (RθJA) of 77.5 °C/W-significantly lower than SMA-packaged equivalents (e.g., SMAJ15A: RθJA ≈ 100 °C/W). This enables higher sustained power dissipation and improved reliability in thermally constrained PCB layouts.
Can the 3KASMC15AHE3_A/I be used in bidirectional protection configurations?
No, the 3KASMC15AHE3_A/I is unidirectional only, as stated in the Vishay datasheet features section. For bidirectional protection, a separate device such as the 3KASMC15CA (center-tapped or dual-diode configuration) would be required; substituting this part in AC or differential signal paths risks failure due to reverse conduction.
3KASMC15AHE3_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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 123A
- 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)
3KASMC15AHE3_A/I FAQ
1.How can I place an order for 3KASMC15AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC15AHE3_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 3KASMC15AHE3_A/I reliable?
The price and inventory of 3KASMC15AHE3_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 3KASMC15AHE3_A/I is usually 5 days.
3.What payment methods are accepted for 3KASMC15AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC15AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC15AHE3_A/I?
3KASMC15AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC15AHE3_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 3KASMC15AHE3_A/I?
For technical support, including 3KASMC15AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC15AHE3_A/I requirements.
6.How does Aetrix verify that 3KASMC15AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All 3KASMC15AHE3_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 3KASMC15AHE3_A/I meets industry standards.
7.What is the process for return or replacement of 3KASMC15AHE3_A/I?
All 3KASMC15AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC15AHE3_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 3KASMC15AHE3_A/I part is unused and in its original packaging.
Return procedure for 3KASMC15AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3KASMC15AHE3_A/I Tags
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