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Vishay General Semiconductor - Diodes Division 3KASMC13AHM3_A/I
- Part No.:
- 3KASMC13AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC13AHM3_A/I.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
3KASMC13AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for high-energy surge clamping in automotive and industrial power rails. It delivers 3000 W peak pulse power (10/1000 μs), clamps at 21.5 V under 140 A surge current, and operates up to 185 °C junction temperature - enabling robust protection of MOSFETs and ICs against inductive switching transients in engine control units and motor drives.
For engineers reviewing the 3KASMC13AHM3_A/I datasheet, 3KASMC13AHM3_A/I pinout, 3KASMC13AHM3_A/I application, or 3KASMC13AHM3_A/I equivalent, key selection criteria include its DO-214AB (SMC) package, 13 V stand-off voltage, AEC-Q101 qualification, 177 A peak pulse current rating, and low 1.0 μA reverse leakage at 13 V - all critical for automotive-grade ESD and load-dump immunity design.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its unidirectional polarity and 14.4–15.9 V breakdown range (at 1 mA) ensure precise clamping onset above normal operating voltage while maintaining tight tolerance.
Designed for 10/1000 μs waveform compliance per ANSI/IEEE C62.35, it achieves 21.5 V clamping at 140 A with fast response time and meets MSL Level 1 (260 °C reflow). Thermal resistance is 77.5 °C/W (junction-to-ambient) and 18.3 °C/W (junction-to-leads), supporting reliable operation under sustained power dissipation up to 6.0 W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous reverse operating voltage before clamping begins; sets safe margin above 12 V automotive systems. |
| VBR (min/max) | 14.4 V / 15.9 V at 1 mA - Confirmed breakdown threshold ensures predictable turn-on during overvoltage events. |
| PPPM | 3000 W - Peak pulse power handling capability with 10/1000 μs waveform; protects against ISO 7637-2 Pulse 5a load dump. |
| IPPM | 140 A - Peak pulse current corresponding to 21.5 V clamping; defines maximum surge energy absorption. |
| TJ max. | 185 °C - Enables operation in under-hood environments without derating in most automotive applications. |
| RθJA | 77.5 °C/W - Junction-to-ambient thermal resistance measured on minimum recommended pad layout; informs PCB thermal design. |
| AEC-Q101 | Qualified - Validated for automotive reliability including temperature cycling, HTRB, and ESD per AEC standard. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, RoHS-compliant, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink terminal | Connected to protected line; absorbs positive transients when referenced to ground in unidirectional configuration. |
| Anode | Reference/ground return terminal | Typically tied to system ground; completes clamping path during overvoltage events on cathode-side lines. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process improves long-term reliability under high-temperature bias stress. |
| Clamping voltage (VC) | 21.5 V at 140 A - Low clamping ratio (VC/VBR ≈ 1.43) minimizes stress on downstream components. |
| Response time | < 1.0 ps - Sub-nanosecond turn-on enables protection of fast-switching MOSFET gates and microcontroller I/O. |
| Surge robustness | 200 A IFSM (8.3 ms half-sine) - Withstands repetitive motor commutation surges without degradation. |
| Lead finish | Matte tin, J-STD-002 solderable - Ensures consistent reflow yield and eliminates whisker risk (JESD 201 Class 2). |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Power Stage |
|---|---|
Use Scenario: Protects MCU power supply and CAN transceiver inputs from load-dump transients during alternator disconnection. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and local DC/DC input, clamping spikes before they reach sensitive regulators. Use Value: 185 °C rating allows placement near hot engine bay components; 3000 W rating handles ISO 7637-2 Pulse 5a (75 V/350 ms) with margin. |
Use Scenario: Shields gate drivers and bootstrap FETs from inductive kickback during IGBT/MOSFET switching in variable-frequency drives. IC Role / Device Role / Timing Role: Mounted across DC bus rails or motor phase outputs to clamp flyback energy during PWM transitions. Use Value: 21.5 V clamping at 140 A limits voltage overshoot below 30 V, preventing gate oxide rupture in 25 V-rated drivers. |
| Telecom Base Station Power Supply | Consumer Appliance Main Board |
Use Scenario: Safeguards 48 V intermediate bus converters from lightning-induced surges entering via AC input or Ethernet ports. IC Role / Device Role / Timing Role: Primary-level TVS on secondary-side output, coordinated with upstream MOVs and gas discharge tubes. Use Value: Low 1.0 μA leakage at 13 V avoids standby power penalty; DO-214AB footprint supports automated assembly in high-volume telecom modules. |
Use Scenario: Guards microcontroller reset lines and sensor interfaces in washing machine control boards exposed to relay coil transients. IC Role / Device Role / Timing Role: Localized clamping device on 3.3 V or 5 V rails, placed adjacent to connectors and relays. Use Value: AEC-Q101 qualification ensures longevity in thermally cycled environments; 77.5 °C/W RθJA allows use without heatsinking on FR-4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13A-E3/57T (Vishay) | Lower PPPM (400 W), same DO-214AC (SMA) package, 13 V VWM, 21.5 V VC at 17.9 A | Targeted at lower-energy consumer electronics; insufficient for automotive load-dump or industrial motor drive surges | Select only for cost-sensitive, non-automotive applications where peak surge current ≤ 20 A |
| SMCJ13A (Littelfuse) | Same DO-214AB (SMC) package, 3000 W PPPM, but VBR = 14.4–15.9 V (identical), VC = 21.5 V at 140 A - functionally identical clamping performance | Also AEC-Q101 qualified; widely used in Tier 1 automotive BOMs with identical test reports | Drop-in alternative if dual-sourcing required; verify reel packaging code compatibility (I vs. TR) |
Compared with SMAJ13A-E3/57T and SMCJ13A, the 3KASMC13AHM3_A/I offers identical clamping performance and AEC-Q101 qualification in the same SMC package, but with Vishay's proprietary passivated anisotropic rectifier technology for enhanced high-temperature life - making it preferred for extended-life automotive modules.
Availability
3KASMC13AHM3_A/I is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drives, telecom base station power supplies, and consumer appliance main boards requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 3KASMC13AHM3_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, high-temperature operation, and automotive qualification.
The 3KASMC series belongs to Vishay's PAR® (Protection Against Transients) family, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and 185 °C operation are mandatory.
FAQ
What is the clamping voltage of the 3KASMC13AHM3_A/I at its rated peak pulse current?
The 3KASMC13AHM3_A/I has a maximum clamping voltage (VC) of 21.5 V at 140 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is guaranteed per the Vishay datasheet (Document Number: 89962, page 2) and reflects the voltage seen by protected circuitry during worst-case surge conditions. The 3KASMC13AHM3_A/I maintains this clamping performance across its full operating temperature range.
Is the 3KASMC13AHM3_A/I suitable for automotive applications?
Yes, the 3KASMC13AHM3_A/I is AEC-Q101 qualified and rated for junction temperatures up to 185 °C, making it suitable for under-hood automotive applications including engine control units, body control modules, and ADAS power supplies. Its DO-214AB (SMC) package meets MSL Level 1, and its 3000 W peak pulse power rating satisfies ISO 7637-2 load-dump requirements - all confirmed in the official Vishay datasheet for 3KASMC13AHM3_A/I.
What does the "_A/I" suffix mean in 3KASMC13AHM3_A/I?
The "_A/I" suffix in 3KASMC13AHM3_A/I indicates the packaging configuration: "A" denotes the revision level (per Vishay's base P/NHM3_X convention), and "I" specifies the delivery mode as 13-inch diameter plastic tape and reel with a base quantity of 3500 units. This matches the ordering information table on page 2 of the Vishay datasheet (Document Number: 89962), confirming that 3KASMC13AHM3_A/I is a fully traceable, production-ready variant.
How does the thermal performance of the 3KASMC13AHM3_A/I compare to similar TVS diodes?
The 3KASMC13AHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 77.5 °C/W when mounted on the minimum recommended pad layout, and 18.3 °C/W junction-to-leads (RθJL). These values are lower than many competing SMC-packaged TVS diodes, enabling higher sustained power dissipation (6.0 W) and improved reliability in compact layouts - a key advantage verified in Vishay's thermal characterization data for the 3KASMC13AHM3_A/I.
Does the 3KASMC13AHM3_A/I have bidirectional polarity?
No, the 3KASMC13AHM3_A/I is unidirectional only, as explicitly stated in the Vishay datasheet features section. Its cathode band marks the terminal that must be connected to the line being protected, with the anode tied to ground. This polarity configuration is optimized for clamping positive transients on DC power rails - a design choice confirmed for the entire 3KASMC10A–43A family, including the 3KASMC13AHM3_A/I.
3KASMC13AHM3_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):
- 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)
3KASMC13AHM3_A/I FAQ
1.How can I place an order for 3KASMC13AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC13AHM3_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 3KASMC13AHM3_A/I reliable?
The price and inventory of 3KASMC13AHM3_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 3KASMC13AHM3_A/I is usually 5 days.
3.What payment methods are accepted for 3KASMC13AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC13AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC13AHM3_A/I?
3KASMC13AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC13AHM3_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 3KASMC13AHM3_A/I?
For technical support, including 3KASMC13AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC13AHM3_A/I requirements.
6.How does Aetrix verify that 3KASMC13AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 3KASMC13AHM3_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 3KASMC13AHM3_A/I meets industry standards.
7.What is the process for return or replacement of 3KASMC13AHM3_A/I?
All 3KASMC13AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC13AHM3_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 3KASMC13AHM3_A/I part is unused and in its original packaging.
Return procedure for 3KASMC13AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3KASMC13AHM3_A/I Tags
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