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Vishay General Semiconductor - Diodes Division 3KASMC13AHE3_B/H
- Part No.:
- 3KASMC13AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC13AHE3_B/H.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,982
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Product details
Overview
3KASMC13AHE3_B/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-reliability overvoltage protection. It features a 13 V stand-off voltage (VWM), 15.2 V nominal breakdown voltage (VBR), 3000 W peak pulse power (10/1000 μs), 21.5 V clamping voltage at 140 A IPPM, and operates up to TJ = 185 °C - ideal for automotive power line and sensor interface protection.
For engineers reviewing the 3KASMC13AHE3_B/H datasheet, 3KASMC13AHE3_B/H pinout, 3KASMC13AHE3_B/H application, or 3KASMC13AHE3_B/H equivalent, key selection criteria include unidirectional clamping performance, AEC-Q101 qualification status, SMC package thermal resistance (RθJL = 18.3 °C/W), and compliance with J-STD-020 MSL level 1 at 260 °C.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for junction stability under high-temperature stress. Its unidirectional polarity enables precise reverse-biased clamping on DC power rails and signal lines without forward conduction during normal operation.
Rated for 3000 W peak pulse power with 10/1000 μs waveform and 200 A non-repetitive surge current (8.3 ms half-sine), it delivers low incremental surge resistance and fast response time to suppress transients induced by inductive load switching in automotive ECUs and industrial controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (nom) | 15.2 V at 1 mA - precise breakdown threshold enabling tight margin between operating and protection thresholds |
| VC @ IPPM | 21.5 V at 140 A - clamping voltage limits downstream IC stress during 3000 W transient events |
| PPPM | 3000 W (10/1000 μs) - robust energy handling for automotive load-dump and ISO 7637-2 pulse 5a suppression |
| TJ max | +185 °C - supports under-hood placement and extended lifetime in AEC-Q101 qualified applications |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 77.5 °C/W RθJA and 18.3 °C/W RθJL |
| Polarity | Unidirectional - cathode-band marked; blocks forward current until VBR exceeded in reverse bias |
Pinout & Package
Package: SMC (DO-214AB), molded case meeting UL 94 V-0, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102, cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-impedance return path; carries full surge current during clamping |
| Cathode | High-side connection point | Connected to protected line (e.g., 12 V rail); reverse-biased during normal operation, conducts only during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier design ensures stable VBR drift ≤ ±5 % over 1000 hrs at TJ = 150 °C |
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD per JESD47 |
| MSL Level 1 | Reflow-compatible up to 260 °C peak without moisture-induced failure |
| Low clamping ratio | VC/VBR = 1.41 - minimizes voltage overshoot while maintaining low leakage (<2 μA at VWM) |
| High IFSM rating | 200 A (8.3 ms half-sine) - withstands repeated motor-commutation surges without degradation |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power input and ground, activated within <1 ns of overvoltage onset. Use Value: Limits rail voltage to ≤21.5 V during 3000 W pulses, preventing damage to MCU power supplies and CAN transceivers. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to microcontrollers in factory automation systems. IC Role / Device Role / Timing Role: Reverse-biased TVS on signal line to shunt ESD (IEC 61000-4-2 ±30 kV air) and inductive kickback from solenoid drivers. Use Value: Clamps transients to 21.5 V while maintaining <2 μA leakage at 13 V, preserving signal integrity and ADC accuracy. |
| Telecom DC Power Input Protection | Consumer Power Adapter Output Protection |
Use Scenario: Securing 48 V PoE-powered equipment inputs against lightning-induced surges and hot-swap transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC input stage, coordinated with upstream fuse and downstream DC-DC converter. Use Value: Absorbs 3000 W pulses without thermal runaway, leveraging RθJL = 18.3 °C/W for reliable heat transfer to PCB copper. | Use Scenario: Adding secondary-level surge immunity to USB-C PD adapter 20 V output rails before connector interface. IC Role / Device Role / Timing Role: Final-stage TVS on regulated output, triggered only during fault conditions to avoid affecting regulation loop stability. Use Value: Enables compact layout with SMC footprint while delivering 21.5 V clamping - below typical 24 V system overvoltage trip thresholds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13A-E3/5AT | Lower PPPM (400 W), same VWM (13 V), SMC package, no AEC-Q101 qualification | Suitable for cost-sensitive consumer electronics but not automotive or industrial high-energy environments | Select when surge energy requirements are ≤400 W and automotive qualification is unnecessary |
| 1.5KE13A | Higher VBR tolerance (±10 % vs. ±5 %), through-hole DO-201 package, 1500 W PPPM, no AEC-Q101 | Limited to board-level prototyping or legacy through-hole designs; lacks surface-mount thermal performance | Choose only for manual assembly or where SMC footprint is incompatible with existing layout |
Compared with SMAJ13A-E3/5AT and 1.5KE13A, the 3KASMC13AHE3_B/H provides triple the pulse power rating, AEC-Q101 qualification, tighter VBR tolerance, and superior thermal resistance - making it the preferred choice for production automotive and industrial systems requiring long-term reliability under high-temperature stress.
Availability
3KASMC13AHE3_B/H is available at Aetrix Electronics and suitable for automotive ECU power protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply across multi-year production cycles.
Supply support for 3KASMC13AHE3_B/H 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, MOSFETs, optoelectronics, and passive components with emphasis on high-reliability, high-power, and automotive-grade solutions.
The 3KASMC series belongs to Vishay's PAR® (Protection and Regulation) transient voltage suppressor family, engineered specifically for AEC-Q101-compliant overvoltage protection in harsh-environment automotive and industrial power systems.
FAQ
What is the clamping voltage of the 3KASMC13AHE3_B/H at its rated peak pulse current?
The 3KASMC13AHE3_B/H has a maximum clamping voltage (VC) of 21.5 V at 140 A peak pulse current (IPPM), measured using a 10/1000 μs waveform. This value is guaranteed per the datasheet's Electrical Characteristics table and defines the upper voltage limit imposed on protected circuits during transient events. The 3KASMC13AHE3_B/H maintains this clamping performance across its full operating temperature range.
Is the 3KASMC13AHE3_B/H qualified for automotive applications?
Yes, the 3KASMC13AHE3_B/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3", which denotes RoHS-compliant and AEC-Q101 qualified devices. It undergoes stress testing including high-temperature operating life (HTOL), temperature cycling (TC), and unbiased highly accelerated stress test (UHAST) to meet automotive reliability standards. The 3KASMC13AHE3_B/H is explicitly intended for use in automotive power distribution and ECU protection.
What does the "HE3" suffix mean in 3KASMC13AHE3_B/H?
The "HE3" suffix in 3KASMC13AHE3_B/H indicates a RoHS-compliant, AEC-Q101 qualified version in SMC package, with matte tin-plated leads and JESD 201 Class 2 whisker resistance. The "B/H" denotes packaging: 7-inch tape-and-reel with 850 units per reel. This suffix distinguishes it from non-automotive variants (e.g., base P/N without HE3) and halogen-free HM3 versions. The 3KASMC13AHE3_B/H meets all mechanical and reliability requirements specified for automotive-grade TVS diodes.
Can the 3KASMC13AHE3_B/H be used in bidirectional configurations?
No, the 3KASMC13AHE3_B/H is unidirectional only, as stated in the Vishay datasheet Features section. It functions as a reverse-biased Zener-like clamp and does not provide symmetrical clamping for AC or bipolar transients. For bidirectional protection, two 3KASMC13AHE3_B/H devices must be connected in series opposing configuration, or a dedicated bidirectional TVS such as SMBJ13CA should be selected instead. The 3KASMC13AHE3_B/H polarity is marked by a cathode band.
What is the thermal resistance from junction to leads (RθJL) for the 3KASMC13AHE3_B/H?
The thermal resistance from junction to leads (RθJL) for the 3KASMC13AHE3_B/H is 18.3 °C/W, as specified in the Thermal Characteristics table of the Vishay datasheet. This parameter reflects the device's ability to conduct heat from the silicon junction directly into the PCB copper via its leads, independent of ambient convection. It is critical for calculating safe power derating in high-density layouts and confirms the 3KASMC13AHE3_B/H's suitability for thermally constrained automotive modules.
3KASMC13AHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 140A
- 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 (SMC)
3KASMC13AHE3_B/H FAQ
1.How can I place an order for 3KASMC13AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC13AHE3_B/H 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 3KASMC13AHE3_B/H reliable?
The price and inventory of 3KASMC13AHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KASMC13AHE3_B/H is usually 5 days.
3.What payment methods are accepted for 3KASMC13AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC13AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC13AHE3_B/H?
3KASMC13AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC13AHE3_B/H 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 3KASMC13AHE3_B/H?
For technical support, including 3KASMC13AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC13AHE3_B/H requirements.
6.How does Aetrix verify that 3KASMC13AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All 3KASMC13AHE3_B/H 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 3KASMC13AHE3_B/H meets industry standards.
7.What is the process for return or replacement of 3KASMC13AHE3_B/H?
All 3KASMC13AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC13AHE3_B/H, 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 3KASMC13AHE3_B/H part is unused and in its original packaging.
Return procedure for 3KASMC13AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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