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Vishay General Semiconductor - Diodes Division 3KASMC30HE3/57T
- Part No.:
- 3KASMC30HE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC30HE3/57T.pdf
- Description:
- TVS DIODE 30VWM 53.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,404
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Product details
Overview
3KASMC30HE3/57T from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in DO-214AB (SMC) package, rated for 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown (VBR), 3000 W peak pulse power (10/1000 µs), 48.4 V clamping voltage at 62.0 A IPPM, and 185 °C maximum junction temperature - deployed for automotive power line and sensor signal line surge protection.
For engineers reviewing the 3KASMC30HE3/57T datasheet, 3KASMC30HE3/57T pinout, 3KASMC30HE3/57T application, or 3KASMC30HE3/57T equivalent, key selection criteria include unidirectional clamping performance under 10/1000 µs transients, AEC-Q101 qualification for automotive use, thermal resistance (RθJA = 77.5 °C/W), and compatibility with standard SMC PCB footprints and reflow profiles up to 260 °C.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its unidirectional architecture provides forward conduction during overvoltage events while maintaining tight clamping (VC = 48.4 V at IPPM = 62.0 A) and fast response time.
Designed for automotive-grade reliability, it operates across –65 °C to +185 °C junction temperature range, meets MSL Level 1 per J-STD-020, and sustains 200 A non-repetitive forward surge current (8.3 ms half-sine). The device is qualified to AEC-Q101 and RoHS-compliant with matte tin-plated leads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 24 V automotive systems. |
| VBR (min/max) | 33.3 V / 36.8 V at IT = 1.0 mA - Confirmed breakdown threshold ensures reliable turn-on during transients without premature conduction. |
| PPPM | 3000 W (10/1000 µs) - Sustains high-energy surges common in load-dump and ISO 7637-2 Pulse 5a events. |
| VC @ IPPM | 48.4 V at 62.0 A - Clamping voltage limits downstream IC stress; compatible with 40 V-rated MOSFETs and controllers. |
| TJ max. | +185 °C - Enables placement near hot components (e.g., power converters, engine control units) without derating. |
| RθJA | 77.5 °C/W - Thermal resistance measured on minimum recommended pad layout; informs heatsinking requirements for sustained surge duty. |
| IR @ VWM | 1.0 µA - Low leakage preserves battery life in always-on automotive modules (e.g., CAN nodes, body controllers). |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode indicated by color band. Dimensions: 6.22 mm × 5.59 mm × 2.41 mm (L × W × H); lead pitch 5.59 mm; matte tin-plated terminals solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry terminal during clamping | Connected to protected line (e.g., 24 V rail or sensor output); must withstand 200 A surge (8.3 ms) without bond wire failure. |
| Cathode | Reverse-biased terminal; clamping reference node | Marked by color band; tied to ground or lower-potential rail; establishes precise VBR and VC thresholds. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood and powertrain applications per stress test conditions including HTOL, TCT, and ESD. |
| Junction passivation | Optimized die surface treatment prevents moisture-induced degradation and leakage drift at 150 °C and 85 % RH. |
| MSL Level 1 rating | Zero floor life limitation; supports standard SMT reflow up to 260 °C peak without preconditioning or baking. |
| Low RSURGE | Minimal incremental surge resistance ensures stable clamping voltage across wide current range (10–62 A). |
| Uni-directional polarity | Enables integration into DC-biased circuits (e.g., LIN bus, 12/24 V power rails) without reverse conduction path concerns. |
Applications
| Automotive Power Line Protection | Engine Control Unit (ECU) Sensor Interface |
|---|---|
Use Scenario: Suppresses load-dump transients (ISO 7637-2 Pulse 5a) on 24 V supply lines feeding ADAS domain controllers. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and DC/DC converter input stage. Use Value: Limits clamped voltage to 48.4 V, protecting 40 V-input buck regulators and preventing system reset during alternator disconnection. |
Use Scenario: Shields analog front-end inputs of pressure/temperature sensors in harsh under-hood environments. IC Role / Device Role / Timing Role: Fast-response TVS connected across sensor signal and ground, adjacent to connector. Use Value: Responds within nanoseconds to ESD (IEC 61000-4-2 ±15 kV) and inductive switching spikes, preserving ADC accuracy. |
| Industrial Motor Drive I/O Protection | Telecom Power Supply Input Stage |
Use Scenario: Guards digital I/O lines (e.g., PWM enable, fault feedback) exposed to back-EMF from brushed DC motors. IC Role / Device Role / Timing Role: TVS mounted at PCB edge connector, shunting transients to chassis ground. Use Value: Withstands 200 A surge (8.3 ms) without degradation, ensuring long-term reliability in factory automation PLCs. |
Use Scenario: Protects AC/DC primary-side rectifier outputs against lightning-induced surges on telecom central office power feeds. IC Role / Device Role / Timing Role: Primary-side TVS on bulk capacitor input, rated for 3000 W 10/1000 µs waveform. Use Value: Delivers 48.4 V clamping at full rated surge current, enabling smaller downstream MOVs and tighter overvoltage margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A | Lower PPPM (400 W), higher RθJA (110 °C/W), same DO-214AC (SMA) package - not AEC-Q101 qualified. | Restricted to consumer/industrial use; unsuitable for automotive underhood due to temperature and qualification gaps. | Select only for cost-sensitive, non-automotive designs where 3000 W surge immunity is not required. |
| SMCJ30A | Same DO-214AB (SMC) package and 3000 W rating, but VBR min = 33.3 V (identical), VC = 48.4 V (identical); AEC-Q101 qualified variant available (SMCJ30AHM3). | Functionally interchangeable in automotive applications; differs only in branding and minor process optimization. | Consider SMCJ30AHM3/57T if dual-source procurement or second-source validation is mandated by OEM design rules. |
Compared with SMAJ30A and SMCJ30A, the 3KASMC30HE3/57T offers identical clamping and surge capability but integrates Vishay's PAR® passivation for enhanced high-temperature leakage stability - critical for extended-life automotive modules operating continuously at 150 °C junction temperature.
Availability
3KASMC30HE3/57T is available at Aetrix Electronics and suitable for automotive power distribution, ECU sensor interface, and industrial motor drive I/O requiring stable component supply with AEC-Q101 compliance and 185 °C junction capability.
Supply support for 3KASMC30HE3/57T 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 high-reliability diodes, rectifiers, and protection devices for automotive, industrial, and computing markets.
The 3KASMC series belongs to Vishay's PAR® TVS platform, engineered specifically for AEC-Q101-compliant surge protection in high-temperature automotive subsystems - emphasizing robustness under sustained thermal stress and repetitive transient exposure.
FAQ
What is the clamping voltage of the 3KASMC30HE3/57T at its rated peak pulse current?
The 3KASMC30HE3/57T has a maximum clamping voltage (VC) of 48.4 V when subjected to its rated peak pulse current (IPPM) of 62.0 A using a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and ensures predictable overvoltage limiting for downstream 40 V-rated components. The 3KASMC30HE3/57T maintains this clamping performance across its full operating temperature range.
Is the 3KASMC30HE3/57T qualified for automotive applications?
Yes, the 3KASMC30HE3/57T is AEC-Q101 qualified and rated for operation from –65 °C to +185 °C junction temperature, making it suitable for underhood and powertrain applications. It meets MSL Level 1 per J-STD-020 and is RoHS-compliant with matte tin-plated leads. The 3KASMC30HE3/57T is explicitly listed in Vishay's AEC-Q101 qualified product matrix for transient voltage suppression.
What package type does the 3KASMC30HE3/57T use, and what are its key mechanical features?
The 3KASMC30HE3/57T uses the DO-214AB (SMC) surface-mount package, measuring 6.22 mm × 5.59 mm × 2.41 mm. It features a cathode identification band, matte tin-plated leads compliant with J-STD-002, and a UL 94 V-0 molding compound. The 3KASMC30HE3/57T is designed for standard reflow profiles with a maximum peak temperature of 260 °C and requires the minimum pad layout specified in Vishay document 89962.
How does the 3KASMC30HE3/57T compare to standard SMAJ-series TVS diodes?
The 3KASMC30HE3/57T delivers 3000 W peak pulse power (vs. 400 W for SMAJ30A), lower thermal resistance (77.5 °C/W vs. ~110 °C/W), and AEC-Q101 qualification - unlike SMAJ30A. Its DO-214AB package supports higher surge handling than DO-214AC. The 3KASMC30HE3/57T also incorporates junction passivation for improved high-temperature leakage stability, a feature not present in standard SMAJ devices.
What is the maximum reverse leakage current of the 3KASMC30HE3/57T at its stand-off voltage?
The 3KASMC30HE3/57T exhibits a maximum reverse leakage current (IR) of 1.0 µA at its 30 V stand-off voltage (VWM) and 25 °C ambient temperature. At elevated temperatures (e.g., TJ = 150 °C), IR remains ≤15 µA - a critical parameter for low-power automotive modules where quiescent current budgets are tightly constrained. This leakage performance is verified per the electrical characteristics table in Vishay document 89962.
3KASMC30HE3/57T 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)
3KASMC30HE3/57T FAQ
1.How can I place an order for 3KASMC30HE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC30HE3/57T 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 3KASMC30HE3/57T reliable?
The price and inventory of 3KASMC30HE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KASMC30HE3/57T is usually 5 days.
3.What payment methods are accepted for 3KASMC30HE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC30HE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC30HE3/57T?
3KASMC30HE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC30HE3/57T 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 3KASMC30HE3/57T?
For technical support, including 3KASMC30HE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC30HE3/57T requirements.
6.How does Aetrix verify that 3KASMC30HE3/57T is sourced from the original manufacturer or authorized distributors?
All 3KASMC30HE3/57T 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 3KASMC30HE3/57T meets industry standards.
7.What is the process for return or replacement of 3KASMC30HE3/57T?
All 3KASMC30HE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC30HE3/57T, 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 3KASMC30HE3/57T part is unused and in its original packaging.
Return procedure for 3KASMC30HE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3KASMC30HE3/57T Tags
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