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Vishay General Semiconductor - Diodes Division 3KASMC13AHE3/9AT
- Part No.:
- 3KASMC13AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC13AHE3/9AT.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,158
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Product details
Overview
3KASMC13AHE3/9AT from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor (TVS) diode in DO-214AB (SMC) package, rated for 13 V stand-off voltage (VWM), 14.4–15.9 V breakdown (VBR), 3000 W peak pulse power (10/1000 μs), 21.5 V clamping voltage at 140 A IPPM, and qualified to AEC-Q101 for automotive electronics protection.
For engineers reviewing the 3KASMC13AHE3/9AT datasheet, 3KASMC13AHE3/9AT pinout, 3KASMC13AHE3/9AT application, or 3KASMC13AHE3/9AT equivalent, this page delivers verified electrical specs, thermal performance at TJ = 185 °C, SMC package mechanical data, and real-world surge protection use cases in automotive sensor lines and MOSFET gate circuits.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability up to TJ = 185 °C and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow compatibility. Its unidirectional polarity and low incremental surge resistance enable fast clamping response during inductive switching transients.
Designed for automotive-grade reliability, it delivers 200 A non-repetitive forward surge current (IFSM) and exhibits 77.5 °C/W junction-to-ambient thermal resistance on standard PCB pad layout - critical for sustained transient energy dissipation without thermal runaway in engine control units and ADAS modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum reverse working voltage before clamping begins; sets operating margin for 12 V automotive systems. |
| VBR (min/max) | 14.4 V / 15.9 V - Breakdown occurs within this range at 1 mA test current; ensures predictable turn-on under overvoltage stress. |
| VC @ IPPM | 21.5 V - Clamping voltage at 140 A peak pulse current; limits downstream IC voltage stress during ESD or load dump. |
| PPPM | 3000 W - Peak pulse power handling with 10/1000 μs waveform; supports high-energy transients in power electronics. |
| TJ max. | 185 °C - Maximum junction temperature rating; enables operation in under-hood automotive environments. |
| AEC-Q101 | Qualified - Certified for automotive electronic components per stress test requirements including HTGB, HTRB, and TCT. |
| RθJA | 77.5 °C/W - Thermal resistance junction-to-ambient on recommended pad layout; informs heatsinking needs for continuous duty. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, cathode indicated by color band, UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected circuit ground or low-side reference. | Provides low VF (3.5 V @ 100 A) path during surge conduction; requires low-inductance PCB routing to minimize overshoot. |
| Cathode | Current exit point in forward bias; connected to line being protected (e.g., 12 V rail or signal trace). | Acts as clamping node - voltage at cathode is limited to ≤21.5 V during 140 A transient; color band identifies this terminal. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier design improves long-term reliability under thermal cycling and humidity exposure. |
| High-temperature capability | TJ = 185 °C rating enables deployment in engine control modules, transmission ECUs, and other high-ambient zones. |
| Fast response time | Sub-nanosecond turn-on ensures clamping occurs before sensitive downstream components (e.g., CAN transceivers) experience overstress. |
| Low incremental surge resistance | Minimizes voltage overshoot during high di/dt events like relay coil de-energization or motor commutation. |
| MSL Level 1 compliance | Supports standard lead-free reflow profiles up to 260 °C peak without moisture-induced failure. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontrollers and power management ICs from load dump and jump-start transients in body control modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 13 V. Use Value: Limits rail voltage to ≤21.5 V during 3000 W pulses, preventing latch-up or oxide breakdown in 3.3 V/5 V logic supplies. |
Use Scenario: Shielding analog output lines of pressure and temperature sensors from ESD and inductive coupling in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance TVS connected between signal line and ground to suppress sub-100 ns transients without distorting 0–5 V signals. Use Value: Clamps 8 kV contact ESD to <22 V within nanoseconds, preserving ADC accuracy and avoiding false triggers in closed-loop control. |
| Automotive CAN Bus Node Protection | MOSFET Gate Driver Surge Suppression |
Use Scenario: Safeguarding CAN transceiver inputs against ISO 7637-2 Pulse 1/2a/5a transients in vehicle infotainment head units. IC Role / Device Role / Timing Role: Unidirectional TVS on CAN_H/CAN_L lines referenced to local ground, leveraging low clamping voltage. Use Value: Maintains bus integrity by limiting differential voltage excursion to <30 V while preserving signal rise/fall times for 500 kbps operation. |
Use Scenario: Preventing gate oxide rupture in high-side N-channel MOSFETs driven by PWM controllers in DC-DC converters. IC Role / Device Role / Timing Role: TVS placed between gate and source to absorb Miller-induced voltage spikes during fast switching transitions. Use Value: Suppresses >100 V spikes to <22 V within 1 ns, eliminating unintended turn-on and ensuring robust 100 kHz+ switching reliability. |
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 | Same DO-214AC (SMA) package; lower PPPM (400 W); VBR = 14.4–16.0 V; RθJA = 110 °C/W. | Limited to lower-energy transients (e.g., I/O ports); unsuitable for 12 V rail load dump per ISO 7637-2. | Select SMAJ13A only for cost-sensitive consumer applications where 3000 W surge immunity is not required. |
| SMCJ13A | Same DO-214AB (SMC) package; identical PPPM (3000 W); VBR = 14.4–16.0 V; AEC-Q101 qualified; RθJA = 77.5 °C/W. | Functionally interchangeable for automotive use; differs only in marking code and minor process revision. | SMCJ13A is a direct functional alternative with identical surge ratings and thermal behavior - verify reel packaging code for logistics alignment. |
Compared with SMAJ13A and SMCJ13A, the 3KASMC13AHE3/9AT offers identical surge capability and thermal performance to SMCJ13A but with enhanced high-temperature stability (TJ = 185 °C vs. 175 °C) and tighter VBR distribution, making it preferred for next-generation automotive ECUs operating near thermal limits.
Availability
3KASMC13AHE3/9AT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, CAN bus node safeguarding, and MOSFET gate driver surge suppression requiring stable component supply across production lifecycles.
Supply support for 3KASMC13AHE3/9AT 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 belongs to Vishay's PAR® family of high-power TVS diodes, engineered specifically for harsh-environment automotive and industrial applications demanding AEC-Q101 compliance and 185 °C junction capability.
FAQ
What is the clamping voltage of the 3KASMC13AHE3/9AT at its rated peak pulse current?
The 3KASMC13AHE3/9AT has a maximum clamping voltage (VC) of 21.5 V when subjected to its rated peak pulse current (IPPM) of 140 A using a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 standards and ensures downstream components see no more than 21.5 V during worst-case transient events, making the 3KASMC13AHE3/9AT suitable for protecting 12 V automotive electronics where voltage margins are tight.
Is the 3KASMC13AHE3/9AT RoHS-compliant and halogen-free?
Yes, the 3KASMC13AHE3/9AT carries the HM3 suffix, confirming full RoHS compliance per Directive 2011/65/EU and halogen-free status per JEDEC JS709A. The device uses matte tin-plated leads and UL 94 V-0 compliant molding compound, satisfying environmental requirements for automotive and industrial manufacturing without compromising surge performance - a key attribute of the 3KASMC13AHE3/9AT.
Does the 3KASMC13AHE3/9AT support lead-free reflow soldering?
Yes, the 3KASMC13AHE3/9AT meets MSL Level 1 per J-STD-020 and is qualified for lead-free reflow with a maximum peak temperature of 260 °C. Its construction - including passivated die, robust metallization, and thermally stable packaging - ensures reliable solder joint formation and mechanical integrity during standard SMT processes, which is essential for high-yield assembly of the 3KASMC13AHE3/9AT into automotive PCBs.
What is the maximum operating junction temperature for the 3KASMC13AHE3/9AT?
The 3KASMC13AHE3/9AT is rated for a maximum junction temperature (TJ max.) of +185 °C, exceeding typical industry standards (e.g., 150 °C or 175 °C). This extended rating enables reliable operation in under-hood automotive locations such as engine control units and transmission control modules, where ambient temperatures exceed 125 °C - a defining thermal advantage of the 3KASMC13AHE3/9AT.
How does the 3KASMC13AHE3/9AT differ from standard SMAJ-series TVS diodes?
The 3KASMC13AHE3/9AT delivers 3000 W peak pulse power in the larger DO-214AB (SMC) package versus 400 W for SMAJ13A in DO-214AC (SMA), enabling higher energy absorption. It also features superior thermal resistance (77.5 °C/W vs. ~110 °C/W), AEC-Q101 qualification, and 185 °C TJ rating - distinguishing the 3KASMC13AHE3/9AT as a high-reliability solution for automotive power systems where SMAJ13A would be thermally insufficient.
3KASMC13AHE3/9AT 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)
3KASMC13AHE3/9AT FAQ
1.How can I place an order for 3KASMC13AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC13AHE3/9AT 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 3KASMC13AHE3/9AT reliable?
The price and inventory of 3KASMC13AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KASMC13AHE3/9AT is usually 5 days.
3.What payment methods are accepted for 3KASMC13AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC13AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC13AHE3/9AT?
3KASMC13AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC13AHE3/9AT 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 3KASMC13AHE3/9AT?
For technical support, including 3KASMC13AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC13AHE3/9AT requirements.
6.How does Aetrix verify that 3KASMC13AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 3KASMC13AHE3/9AT 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 3KASMC13AHE3/9AT meets industry standards.
7.What is the process for return or replacement of 3KASMC13AHE3/9AT?
All 3KASMC13AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC13AHE3/9AT, 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 3KASMC13AHE3/9AT part is unused and in its original packaging.
Return procedure for 3KASMC13AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3KASMC13AHE3/9AT Tags
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