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Vishay General Semiconductor - Diodes Division 3KASMC36AHE3/9AT
- Part No.:
- 3KASMC36AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC36AHE3/9AT.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,845
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Product details
Overview
3KASMC36AHE3/9AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, rated for 36 V stand-off voltage, 40.0–44.2 V breakdown at 1 mA, 3000 W peak pulse power (10/1000 µs), 51.6 A peak surge current, and 58.1 V clamping voltage at IPPM - deployed for automotive power line and sensor interface protection.
For engineers reviewing the 3KASMC36AHE3/9AT datasheet, 3KASMC36AHE3/9AT pinout, 3KASMC36AHE3/9AT application, or 3KASMC36AHE3/9AT equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 77.5 °C/W), junction temperature limit (TJ = 185 °C), and DO-214AB mechanical layout details required for ESD/surge design validation.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping under high-temperature operation up to 185 °C junction, with low incremental surge resistance and fast response time critical for protecting MOSFETs and ICs against inductive switching transients. Its unidirectional polarity and 10/1000 µs waveform rating align with IEC 61000-4-5 and ANSI/IEEE C62.35 standards.
The device is qualified to AEC-Q101, meets MSL Level 1 per J-STD-020 (260 °C peak reflow), and features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 - enabling robust solderability and whisker resistance (JESD 201 Class 2) in automotive PCB assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - maximum reverse working voltage before clamping begins; defines safe operating margin for 36 V nominal systems |
| VBR (min/max) | 40.0 V / 44.2 V at IT = 1 mA - ensures reliable breakdown initiation across process variation and temperature |
| IPPM | 51.6 A - peak surge current capability with 10/1000 µs waveform; determines minimum trace width and fuse coordination |
| VC | 58.1 V at IPPM - clamping voltage seen by protected circuit; must be below downstream IC absolute maximum rating |
| PPPM | 3000 W - peak pulse power handling; validates immunity to ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges |
| TJ max. | 185 °C - enables operation in under-hood automotive environments without derating loss |
| RθJA | 77.5 °C/W - thermal resistance from junction to ambient; used to calculate temperature rise under DC leakage or repeated pulses |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode indicated by color band. Dimensions: 7.11 mm × 6.22 mm × 2.90 mm (L × W × H); recommended pad layout per Vishay spec: 3.20 mm min. length, 1.52 mm min. width, 4.69 mm max. width.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-impedance return path; forms clamping loop with cathode |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 12 V battery rail); absorbs positive transients toward ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive powertrain and body electronics per stress test requirements |
| 185 °C junction rating | Enables direct placement near heat sources (e.g., engine control modules) without thermal derating |
| 3000 W peak pulse power | Withstands severe load-dump and inductive kick events per ISO 7637-2 and SAE J1113-11 |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage stress on downstream components during surge events |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking prior to assembly |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and system ground to shunt surge energy away from LDOs and microcontrollers. Use Value: Withstands 3000 W surges while limiting clamped voltage to 58.1 V - below typical 60 V absolute max rating of automotive PMICs. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation PLCs exposed to relay coil transients. IC Role / Device Role / Timing Role: TVS placed across differential signal pair or single-ended output to suppress ±1 kV EFT bursts (IEC 61000-4-4). Use Value: Fast response and low capacitance (<100 pF at 0 V) prevent signal distortion while clamping transients before ADC input stages. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeds |
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters after primary-side isolation. IC Role / Device Role / Timing Role: Unidirectional TVS on 5–20 V output rails to absorb coupling noise from primary-side MOSFET switching. Use Value: 36 V VWM provides 20 % margin above 20 V PD max, and 58.1 V VC stays within USB-C sink IC tolerance limits. |
Use Scenario: Surge protection on -48 V telecom power distribution boards feeding remote radio units. IC Role / Device Role / Timing Role: Cathode tied to -48 V rail, anode to ground - clamps negative-going transients (e.g., lightning-induced surges on feed lines). Use Value: 185 °C TJ rating supports operation in sealed outdoor cabinets where ambient exceeds 85 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A | Lower PPPM (400 W), smaller SMA package (DO-214AC), RθJA = 110 °C/W | Suitable only for low-energy transients (IEC 61000-4-2 ESD), not ISO 7637-2 load dump | Select when board space is constrained and surge threat level is limited to ESD or low-repetition switching noise. |
| SMCJ36A | Same DO-214AB package, identical VWM/VBR/VC, but rated for 1500 W (not 3000 W) and non-AEC-Q101 | Lacks automotive qualification and half the peak power capability - insufficient for full load-dump compliance | Choose for industrial controls where AEC-Q101 is unnecessary and 1500 W suffices for local switching transients. |
Compared with SMAJ36A and SMCJ36A, the 3KASMC36AHE3/9AT delivers double the surge power rating of SMCJ36A and nearly 8× that of SMAJ36A, while maintaining AEC-Q101 qualification and 185 °C operation - making it the only option among the three validated for under-hood automotive deployment with full ISO 7637-2 Pulse 5a immunity.
Availability
3KASMC36AHE3/9AT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, consumer power adapter secondary sides, and telecom DC power feeds requiring stable component supply with long-term lifecycle assurance.
Supply support for 3KASMC36AHE3/9AT 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, high-temperature, and automotive-grade performance.
The 3KASMC series was developed specifically for AEC-Q101-compliant transient suppression in harsh automotive environments - targeting engine control, body electronics, and ADAS power domains where 185 °C operation and 3000 W surge immunity are mandatory.
FAQ
What is the clamping voltage of the 3KASMC36AHE3/9AT at its rated peak pulse current?
The 3KASMC36AHE3/9AT has a maximum clamping voltage (VC) of 58.1 V when subjected to its rated peak pulse current (IPPM) of 51.6 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures protected circuits remain within safe voltage margins during surge events. The 3KASMC36AHE3/9AT maintains this clamping performance across its full operating temperature range.
Is the 3KASMC36AHE3/9AT qualified for automotive use?
Yes, the 3KASMC36AHE3/9AT is AEC-Q101 qualified and rated for junction temperatures up to 185 °C, meeting automotive reliability requirements for powertrain and body electronics. It also complies with MSL Level 1 per J-STD-020 and passes JESD 201 Class 2 whisker testing - confirming suitability for automotive PCB assembly and under-hood deployment. The 3KASMC36AHE3/9AT is explicitly listed in Vishay's AEC-Q101 qualified product matrix.
What package type does the 3KASMC36AHE3/9AT use, and what are its key mechanical dimensions?
The 3KASMC36AHE3/9AT uses the DO-214AB (SMC) surface-mount package, with overall dimensions of 7.11 mm × 6.22 mm × 2.90 mm (length × width × height). The cathode is marked by a color band, and the device requires a minimum pad length of 3.20 mm and minimum pad width of 1.52 mm per Vishay's recommended layout. The 3KASMC36AHE3/9AT's SMC footprint supports high-current routing and thermal dissipation in compact layouts.
How does the 3KASMC36AHE3/9AT compare to standard SMAJ or SMCJ series TVS diodes?
The 3KASMC36AHE3/9AT offers 3000 W peak pulse power - double that of SMCJ36A (1500 W) and 7.5× higher than SMAJ36A (400 W) - while retaining the same DO-214AB package. It is AEC-Q101 qualified and rated for 185 °C operation, unlike most SMAJ/SMCJ variants. The 3KASMC36AHE3/9AT also features lower incremental surge resistance and tighter VBR tolerance, making it uniquely suited for demanding automotive load-dump protection where the 3KASMC36AHE3/9AT is specified.
What is the maximum reverse leakage current of the 3KASMC36AHE3/9AT at its stand-off voltage?
The 3KASMC36AHE3/9AT exhibits a maximum reverse leakage current (IR) of 1.0 µA at its 36 V stand-off voltage (VWM) and 25 °C ambient temperature. At elevated temperature (TJ = 150 °C), leakage remains ≤20 µA - ensuring minimal standby power loss in always-on automotive modules. This low leakage is maintained across the full VWM range and contributes to system efficiency in battery-sensitive applications using the 3KASMC36AHE3/9AT.
3KASMC36AHE3/9AT 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):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 51.6A
- 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)
3KASMC36AHE3/9AT FAQ
1.How can I place an order for 3KASMC36AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC36AHE3/9AT 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 3KASMC36AHE3/9AT reliable?
The price and inventory of 3KASMC36AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KASMC36AHE3/9AT is usually 5 days.
3.What payment methods are accepted for 3KASMC36AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC36AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC36AHE3/9AT?
3KASMC36AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC36AHE3/9AT 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 3KASMC36AHE3/9AT?
For technical support, including 3KASMC36AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC36AHE3/9AT requirements.
6.How does Aetrix verify that 3KASMC36AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 3KASMC36AHE3/9AT 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 3KASMC36AHE3/9AT meets industry standards.
7.What is the process for return or replacement of 3KASMC36AHE3/9AT?
All 3KASMC36AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC36AHE3/9AT, 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 3KASMC36AHE3/9AT part is unused and in its original packaging.
Return procedure for 3KASMC36AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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