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Vishay General Semiconductor - Diodes Division 3KASMC13AHE3_A/H
- Part No.:
- 3KASMC13AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC13AHE3_A/H.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,251
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Product details
Overview
3KASMC13AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor (TVS) diode designed for high-energy surge clamping in automotive and industrial power rails. It features a 13 V stand-off voltage (VWM), 14.4–15.9 V breakdown voltage (VBR) at 1 mA, 3000 W peak pulse power (10/1000 μs), 21.5 V maximum clamping voltage (VC) at 140 A IPPM, and AEC-Q101 qualification for under-hood electronics protection.
For engineers reviewing the 3KASMC13AHE3_A/H datasheet, 3KASMC13AHE3_A/H pinout, 3KASMC13AHE3_A/H application, or 3KASMC13AHE3_A/H equivalent, key selection criteria include clamping performance at 140 A surge current, TJ = 185 °C junction rating for high-temperature environments, DO-214AB (SMC) package thermal resistance (RθJA = 77.5 °C/W), and uni-directional polarity for DC rail protection.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to deliver stable clamping under repetitive surge stress and elevated ambient temperatures up to +150 °C. Its low incremental surge resistance and fast response time ensure effective suppression of transients induced by inductive load switching in 12 V automotive systems.
The device operates exclusively in uni-directional mode with cathode-band polarity marking, supports 200 A non-repetitive forward surge current (IFSM), and meets J-STD-020 MSL Level 1 with 260 °C lead-free reflow compatibility - critical for automated SMT assembly in high-reliability production.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous reverse operating voltage before clamping begins; sets threshold for 12 V nominal rail protection. |
| VBR (min/max) | 14.4 V / 15.9 V at 1 mA - Confirmed breakdown range ensures reliable turn-on margin above VWM without premature conduction. |
| VC @ IPPM | 21.5 V at 140 A - Clamping voltage during 3000 W transient; limits downstream IC stress to safe levels in automotive ECUs. |
| PPPM | 3000 W (10/1000 μs) - Peak surge energy handling capacity validated per ANSI/IEEE C62.35; suitable for ISO 7637-2 Pulse 5a/b. |
| TJ max. | +185 °C - Enables operation in engine compartment environments where ambient exceeds 125 °C. |
| AEC-Q101 | Qualified - Certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
| Package | DO-214AB (SMC) - Standardized surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.06 mm lead spacing for robust PCB mounting. |
Pinout & Package
Package: DO-214AB (SMC), molded case with matte tin-plated leads, cathode indicated by color band. Complies with UL 94 V-0 flammability rating and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-impedance return path; forms clamping path during positive transients on cathode side. |
| Cathode | High-side connection point | Connected to protected line (e.g., battery rail); conducts surge current to ground when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable leakage (<2 μA at VWM) and consistent VBR over lifetime and temperature cycling. |
| 185 °C junction rating | Supports sustained operation in under-hood locations without derating at +125 °C ambient. |
| 3000 W peak pulse power | Handles severe load-dump transients (e.g., ISO 16750-2) without failure in 12 V systems. |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage stress on downstream MOSFETs and microcontrollers during surge events. |
| MSL Level 1, 260 °C peak | Permits single-pass lead-free reflow without moisture-induced damage or delamination. |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive Control |
|---|---|
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: Uni-directional TVS clamping element placed between battery rail and ground. Use Value: Limits transient voltage to ≤21.5 V at 140 A, preventing latch-up or gate oxide damage in MCU power supplies. |
Use Scenario: Safeguarding gate drivers and IGBTs in variable-frequency drives exposed to inductive kickback. IC Role / Device Role / Timing Role: Fast-response surge suppressor across DC bus or control signal lines. Use Value: Clamps 3000 W surges within nanoseconds, reducing risk of false triggering or component failure during motor commutation. |
| Telecom Power Interface | Consumer Appliance Power Supply |
Use Scenario: Shielding PoE-powered Ethernet switches from lightning-induced surges on 48 V input rails. IC Role / Device Role / Timing Role: Primary-level TVS on DC input stage upstream of DC/DC converters. Use Value: Maintains <2 μA leakage at 43 V VWM variant group while delivering 21.5 V clamping at rated current. |
Use Scenario: Securing mainboard power inputs in washing machines and HVAC controllers against relay contact bounce. IC Role / Device Role / Timing Role: Overvoltage clamp on 24 V auxiliary supply feeding sensors and displays. Use Value: Withstands 200 A IFSM pulses and operates reliably at TJ = 185 °C, matching appliance thermal profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13A-E3/5AT | Lower PPPM (400 W), smaller SMA package (RθJA = 110 °C/W), same VWM/VBR range. | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5 or load dump. | Select when space-constrained and surge energy ≤400 W; verify thermal margin with board layout. |
| 1.5KE13A | Through-hole DO-201 package, higher RθJA (~65 °C/W), same 13 V VWM but 2x larger footprint. | Requires manual or wave soldering; not compatible with high-speed SMT lines. | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required. |
Compared with SMAJ13A-E3/5AT and 1.5KE13A, the 3KASMC13AHE3_A/H delivers 7.5× higher surge power handling in an SMT-optimized package with automotive-qualified reliability and superior thermal performance - making it the preferred choice for production-grade 12 V automotive and industrial systems.
Availability
3KASMC13AHE3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial motor drives, telecom power interfaces, and consumer appliance power supplies requiring stable component supply with AEC-Q101 assurance and full traceability.
Supply support for 3KASMC13AHE3_A/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, rectifiers, and protection devices with emphasis on high-reliability, high-temperature, and automotive-grade performance.
The 3KASMC13AHE3_A/H belongs to Vishay's PAR® TVS family, engineered specifically for robust transient suppression in harsh environments - targeting automotive under-hood, industrial automation, and infrastructure power systems where thermal stability and surge immunity are mission-critical.
FAQ
What is the clamping voltage of the 3KASMC13AHE3_A/H at its rated peak pulse current?
The 3KASMC13AHE3_A/H has a maximum clamping voltage (VC) of 21.5 V when subjected to its rated peak pulse current (IPPM) of 140 A under a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for downstream components in 12 V systems. The 3KASMC13AHE3_A/H maintains this clamping performance across its qualified temperature range.
Is the 3KASMC13AHE3_A/H suitable for automotive applications?
Yes, the 3KASMC13AHE3_A/H is AEC-Q101 qualified and rated for TJ = 185 °C, making it suitable for under-hood automotive applications such as engine control modules, body control units, and ADAS power supplies. Its DO-214AB package meets MSL Level 1 and supports lead-free reflow, and its 3000 W surge rating aligns with ISO 7637-2 Pulse 5 requirements. The 3KASMC13AHE3_A/H is explicitly listed in Vishay's automotive-grade TVS portfolio.
What does the "_A/H" suffix indicate in 3KASMC13AHE3_A/H?
The "_A/H" suffix in 3KASMC13AHE3_A/H denotes the packaging configuration: "H" specifies 7-inch plastic tape-and-reel delivery with a base quantity of 850 units, and "A" indicates compliance with Vishay's standard revision level for that date code. The "E3" portion confirms RoHS-compliant matte tin plating. This ordering code maps directly to Vishay's documented preferred package code "H" in Document Number 89962.
How does the thermal resistance of the 3KASMC13AHE3_A/H affect PCB layout?
The 3KASMC13AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 77.5 °C/W when mounted on the minimum recommended pad layout. To maintain TJ ≤185 °C under 6.0 W steady-state dissipation, designers must provide adequate copper area and thermal vias - especially in high-ambient environments. The 3KASMC13AHE3_A/H datasheet specifies exact pad dimensions (0.126″ min. width, 0.185″ max. length) to achieve this rating.
Can the 3KASMC13AHE3_A/H replace older SMAJ13A devices in existing designs?
No - the 3KASMC13AHE3_A/H is not a drop-in replacement for SMAJ13A due to significant differences in surge capability (3000 W vs. 400 W), package size (DO-214AB vs. DO-214AC), and thermal performance (RθJA = 77.5 °C/W vs. 110 °C/W). While both share 13 V VWM, the 3KASMC13AHE3_A/H requires updated layout and validation for higher-energy transients. Redesign review is mandatory before substitution.
3KASMC13AHE3_A/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:
- Obsolete
- 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 (SMCJ)
3KASMC13AHE3_A/H FAQ
1.How can I place an order for 3KASMC13AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC13AHE3_A/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_A/H reliable?
The price and inventory of 3KASMC13AHE3_A/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_A/H is usually 5 days.
3.What payment methods are accepted for 3KASMC13AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC13AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC13AHE3_A/H?
3KASMC13AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC13AHE3_A/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_A/H?
For technical support, including 3KASMC13AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC13AHE3_A/H requirements.
6.How does Aetrix verify that 3KASMC13AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 3KASMC13AHE3_A/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_A/H meets industry standards.
7.What is the process for return or replacement of 3KASMC13AHE3_A/H?
All 3KASMC13AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC13AHE3_A/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_A/H part is unused and in its original packaging.
Return procedure for 3KASMC13AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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