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Vishay General Semiconductor - Diodes Division 3KASMC30HE3_A/I
- Part No.:
- 3KASMC30HE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC30HE3_A/I.pdf
- Description:
- TVS DIODE 30VWM 53.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,110
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Product details
Overview
3KASMC30HE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, rated for 30 V stand-off voltage, 33.3–36.8 V breakdown at 1 mA, 48.4 V clamping voltage at 62 A peak pulse current, and 3000 W peak pulse power with 10/1000 µs waveform - deployed for automotive power line and sensor signal line surge protection.
For engineers reviewing the 3KASMC30HE3_A/I datasheet, 3KASMC30HE3_A/I pinout, 3KASMC30HE3_A/I application, or 3KASMC30HE3_A/I equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance (RθJA = 77.5 °C/W), junction temperature limit (TJ = 185 °C), and DO-214AB mechanical dimensions to support layout, reliability validation, and automotive-grade design-in.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. It delivers fast response time and excellent clamping performance under repetitive and non-repetitive transients induced by inductive switching or ESD events.
Rated for operation from –65 °C to +185 °C, it meets MSL Level 1 per J-STD-020 (260 °C peak reflow), supports 200 A IFSM (8.3 ms half-sine), and exhibits 1.0 µA max reverse leakage at VWM and 15 µA at TJ = 150 °C - confirming suitability for under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 33.3 V / 36.8 V at IT = 1 mA - ensures reliable breakdown initiation within defined tolerance band |
| VC @ IPPM | 48.4 V at 62 A - clamping voltage limits downstream IC stress during 10/1000 µs surge |
| PPPM | 3000 W - peak pulse power handling capability defines transient energy absorption capacity |
| TJ max. | +185 °C - enables use in high-temperature automotive locations without derating penalties |
| RθJA | 77.5 °C/W - thermal resistance informs PCB pad layout and heatsinking requirements |
| AEC-Q101 | Qualified - validates reliability for automotive electronic systems per stress test standard |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, cathode indicated by color band. Meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected circuit ground or low-side return path | Defines reference point for unidirectional clamping - must be tied to system ground plane for effective surge shunting |
| Cathode | Current exit terminal in forward bias; marked by color band; connected to protected line (e.g., power rail or signal) | Surge current flows from cathode to anode during overvoltage event - placement determines clamping polarity and protection direction |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable VBR drift < ±5 % over lifetime and temperature |
| High-temperature operation | TJ = 185 °C rating allows direct placement near power converters or engine control units without thermal derating |
| Clamping performance | Low VC/VBR ratio (~1.45) minimizes let-through voltage to safeguard 3.3 V/5 V logic interfaces |
| Surge robustness | 200 A IFSM (8.3 ms) supports repeated load-dump and jump-start events in 12 V automotive systems |
| Manufacturing compliance | MSL Level 1 and RoHS-compliant - eliminates moisture sensitivity concerns and enables standard SMT reflow |
Applications
| Automotive Power Line Protection | Engine Control Unit (ECU) Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power rails against ISO 7637-2 pulse 1, 2a, 3a/b, and load dump transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND to clamp surges before they reach LDO or MCU input pins. Use Value: 48.4 V clamping at 62 A prevents overvoltage damage to 36 V-rated input stages while maintaining AEC-Q101 qualification. |
Use Scenario: Safeguarding analog sensor inputs (e.g., MAP, TPS, O2) from ESD and inductive kickback in harsh under-hood environments. IC Role / Device Role / Timing Role: Low-capacitance TVS on signal lines to suppress transients without distorting millivolt-level sensor outputs. Use Value: 1.0 µA leakage at 30 V ensures minimal DC loading on precision ratiometric sensors across temperature range. |
| Industrial Motor Drive Control | Telecom Power Supply Input Stage |
Use Scenario: Suppressing commutation spikes on gate driver supply rails in BLDC inverters operating up to 10 kHz PWM frequency. IC Role / Device Role / Timing Role: Fast-response TVS parallel to bulk capacitor to absorb high-di/dt transients generated by MOSFET switching. Use Value: 3000 W peak power rating handles repetitive 10/1000 µs surges without degradation over >100,000 cycles. |
Use Scenario: Front-end protection of AC/DC and DC/DC converters in telecom base station power modules exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V or 54 V intermediate bus to limit surge propagation into downstream regulation stages. Use Value: 185 °C junction rating supports operation inside sealed, convection-limited enclosures without forced cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A | Same DO-214AA (SMB) package; lower PPPM = 600 W; VC = 48.4 V at 12.5 A | Limited to lower-energy transients; not qualified to AEC-Q101 | Select when cost-sensitive industrial designs require basic surge suppression without automotive qualification. |
| SMCJ30A | Same DO-214AB (SMC) package; identical PPPM = 3000 W; VC = 48.4 V at 62 A; AEC-Q101 qualified | Functionally identical clamping and surge rating; differs only in marking code and packaging suffix | Valid alternative if 3KASMC30HE3_A/I lead time constraints exist - verify reel code compatibility with SMT line. |
Compared with SMBJ30A and SMCJ30A, the 3KASMC30HE3_A/I provides identical surge robustness and automotive qualification in the same SMC footprint, but with Vishay's optimized passivation for improved long-term VBR stability under thermal cycling.
Availability
3KASMC30HE3_A/I is available at Aetrix Electronics and suitable for automotive power line protection, ECU sensor interface hardening, and industrial motor drive control requiring stable component supply, full traceability, and AEC-Q101 compliance.
Supply support for 3KASMC30HE3_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, MOSFETs, and protection devices 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 demanding automotive and industrial surge environments where 185 °C operation and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of the 3KASMC30HE3_A/I at its rated peak pulse current?
The 3KASMC30HE3_A/I has a maximum clamping voltage (VC) of 48.4 V at 62 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuits during surge events. The 3KASMC30HE3_A/I maintains this clamping performance across its full operating temperature range, supporting robust protection in automotive and industrial applications.
Is the 3KASMC30HE3_A/I qualified for automotive applications?
Yes, the 3KASMC30HE3_A/I is AEC-Q101 qualified, confirming its reliability for automotive electronic systems. It meets stress tests including high-temperature operating life, temperature cycling, and humidity bias HAST. Its 185 °C maximum junction temperature and MSL Level 1 rating further validate suitability for under-hood and powertrain applications. The 3KASMC30HE3_A/I is explicitly listed in Vishay's AEC-Q101 qualified product matrix.
What package type does the 3KASMC30HE3_A/I use, and what are its key mechanical features?
The 3KASMC30HE3_A/I uses the DO-214AB (SMC) surface-mount package, with overall dimensions of 7.11 mm × 6.22 mm × 2.62 mm (L × W × H). Key mechanical features include matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, UL 94 V-0 molding compound, and cathode identification via molded color band. The 3KASMC30HE3_A/I requires the recommended minimum pad layout per Vishay specification to ensure thermal and mechanical reliability.
How does the 3KASMC30HE3_A/I compare to standard SMBJ-series TVS diodes in surge capability?
The 3KASMC30HE3_A/I delivers 3000 W peak pulse power (10/1000 µs), five times higher than the 600 W rating of SMBJ30A in the smaller DO-214AA (SMB) package. Its 62 A IPPM and 48.4 V VC enable protection against severe transients like ISO 16750-2 load dump, whereas SMBJ30A is limited to lower-energy events. The 3KASMC30HE3_A/I also achieves AEC-Q101 qualification, unlike most SMBJ variants.
What is the maximum reverse leakage current of the 3KASMC30HE3_A/I at elevated temperature?
At TJ = 150 °C, the 3KASMC30HE3_A/I exhibits a maximum reverse leakage current (ID) of 15 µA at VWM = 30 V. At 25 °C, leakage is ≤1.0 µA. This controlled leakage ensures minimal power loss and signal integrity impact in always-on automotive modules such as body control units or telematics systems. The 3KASMC30HE3_A/I maintains these values across its full –65 °C to +185 °C operating range.
3KASMC30HE3_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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 53.5V
- Current - Peak Pulse (10/1000µs):
- 56.1A
- 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)
3KASMC30HE3_A/I FAQ
1.How can I place an order for 3KASMC30HE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC30HE3_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 3KASMC30HE3_A/I reliable?
The price and inventory of 3KASMC30HE3_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 3KASMC30HE3_A/I is usually 5 days.
3.What payment methods are accepted for 3KASMC30HE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC30HE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC30HE3_A/I?
3KASMC30HE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC30HE3_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 3KASMC30HE3_A/I?
For technical support, including 3KASMC30HE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC30HE3_A/I requirements.
6.How does Aetrix verify that 3KASMC30HE3_A/I is sourced from the original manufacturer or authorized distributors?
All 3KASMC30HE3_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 3KASMC30HE3_A/I meets industry standards.
7.What is the process for return or replacement of 3KASMC30HE3_A/I?
All 3KASMC30HE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC30HE3_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 3KASMC30HE3_A/I part is unused and in its original packaging.
Return procedure for 3KASMC30HE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3KASMC30HE3_A/I Tags
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