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Vishay General Semiconductor - Diodes Division 3KASMC36AHE3_B/H
- Part No.:
- 3KASMC36AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC36AHE3_B/H.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,441
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Product details
Overview
3KASMC36AHE3_B/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor in SMC (DO-214AB) package, rated for 36 V stand-off voltage, 42.1 V nominal breakdown, 58.1 V max clamping at 51.6 A, and 3000 W peak pulse power with 10/1000 μs waveform. It operates up to 185 °C junction temperature and is AEC-Q101 qualified for automotive electronics protection.
For engineers reviewing the 3KASMC36AHE3_B/H datasheet, 3KASMC36AHE3_B/H pinout, 3KASMC36AHE3_B/H application, or 3KASMC36AHE3_B/H equivalent, key selection criteria include clamping voltage under surge, thermal resistance (RθJL = 18.3 °C/W), unidirectional polarity, RoHS-compliant matte tin plating, and MSL Level 1 moisture sensitivity rating.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its 10/1000 μs waveform response delivers 51.6 A peak pulse current while clamping at ≤58.1 V - critical for protecting downstream MOSFETs and sensor signal lines against inductive switching transients.
The device features a cathode-band polarity marker, meets JESD201 Class 2 whisker test requirements, and is characterized for operation from –65 °C to +185 °C. Thermal performance is specified with RθJA = 77.5 °C/W (on standard pad layout) and RθJL = 18.3 °C/W, enabling reliable power dissipation in constrained automotive PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (nom) | 42.1 V - breakdown voltage at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 58.1 V - clamping voltage at 51.6 A peak pulse, limiting stress on protected ICs |
| PPPM | 3000 W - peak pulse power handling with 10/1000 μs waveform, per IEC 61000-4-5 |
| TJ max | +185 °C - enables use in under-hood automotive environments without derating |
| Polarity | Unidirectional - protects against positive-going transients only; requires correct orientation |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm x 6.22 mm footprint |
Pinout & Package
Package: SMC (DO-214AB), molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-002 and JESD22-B102; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during clamping | Connected to protected circuit ground or low-side reference; must be routed with low-inductance path |
| Cathode | Current exit terminal during clamping | Connected to protected line (e.g., 12 V rail or sensor input); marked by visible band |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier structure ensures stable VBR over lifetime and temperature |
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, TC, and HAST testing |
| MSL Level 1 | Zero floor life limitation; supports reflow up to 260 °C peak without baking |
| Low RθJL | 18.3 °C/W junction-to-lead thermal resistance enables efficient heat transfer to PCB copper |
| Fast response time | Sub-nanosecond turn-on ensures clamping before sensitive ICs experience overstress |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-connected ECUs from load-dump and alternator-spike transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp positive surges. Use Value: 58.1 V clamping limits rail excursion below 60 V, safeguarding 48 V-tolerant microcontrollers and CAN transceivers. | Use Scenario: Shielding analog inputs of pressure/temperature sensors in motor control cabinets from EMI and relay-switching noise. IC Role / Device Role / Timing Role: Standoff protection element on signal line, absorbing fast-rising transients before they reach ADC front-end. Use Value: 3000 W pulse rating handles repetitive 1 kV/μs transients common in factory automation environments. |
| Automotive Lighting Module Protection | Telecom DC Power Input Protection |
Use Scenario: Safeguarding LED driver ICs in headlamp modules subjected to ISO 7637-2 Pulse 1/2a/5a events. IC Role / Device Role / Timing Role: Primary suppression device across input capacitor, shunting surge energy away from PMIC. Use Value: 185 °C TJ max allows placement near heat-generating LED drivers without thermal derating. | Use Scenario: Guarding PoE-powered network switches against lightning-induced surges on 48 V DC input rails. IC Role / Device Role / Timing Role: First-stage clamping device upstream of DC-DC converter, reducing stress on secondary TVS and filter components. Use Value: 51.6 A IPPM capability sustains multiple 10/1000 μs surges per IEC 61000-4-5 Level 4 compliance testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/5AT | Lower PPPM (400 W vs. 3000 W); same VWM/VBR range; SMA package (smaller thermal mass) | Not suitable for automotive load-dump; limited to low-energy ESD/surge events | Select only for space-constrained consumer electronics where 3000 W capability is unnecessary |
| SMCJ36A | Same SMC package and 3000 W rating; higher IR leakage (5 μA vs. 1 μA at VWM); no AEC-Q101 qualification | Acceptable for industrial use but not automotive qualification-critical designs | Choose when AEC-Q101 is not required and cost optimization is prioritized over leakage performance |
Compared with SMAJ36A-E3/5AT and SMCJ36A, the 3KASMC36AHE3_B/H provides superior surge robustness and automotive qualification while maintaining identical SMC footprint - enabling drop-in replacement where AEC-Q101 and low leakage are mandatory.
Availability
3KASMC36AHE3_B/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, and telecom DC power input protection requiring stable component supply and long-term lifecycle support.
Supply support for 3KASMC36AHE3_B/H 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, and MOSFETs with emphasis on high-reliability, high-temperature, and automotive-qualified solutions.
The 3KASMCxxA family was designed specifically for demanding automotive and industrial transient suppression, combining PAR® technology, AEC-Q101 qualification, and 185 °C operation to replace legacy TVS devices in next-generation power systems.
FAQ
What is the clamping voltage of the 3KASMC36AHE3_B/H at its rated peak pulse current?
The 3KASMC36AHE3_B/H has a maximum clamping voltage (VC) of 58.1 V at 51.6 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected downstream components see no more than 58.1 V during surge events - critical for ensuring compatibility with 48 V-tolerant ICs in automotive applications.
Is the 3KASMC36AHE3_B/H AEC-Q101 qualified and what does that mean for automotive use?
Yes, the 3KASMC36AHE3_B/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation (Doc. #88480). This qualification validates performance across temperature cycling, humidity testing, and high-temperature operating life - making it suitable for under-hood and safety-critical automotive subsystems such as body control modules and lighting drivers.
What is the thermal resistance from junction to leads (RθJL) for the 3KASMC36AHE3_B/H and why does it matter?
The 3KASMC36AHE3_B/H has a typical RθJL of 18.3 °C/W. This low value indicates highly efficient heat conduction from the silicon junction to the PCB copper via the leads - essential for sustaining repeated surge events without thermal runaway, especially in compact automotive PCBs where heatsinking area is limited.
Does the 3KASMC36AHE3_B/H have moisture sensitivity level (MSL) rating and what reflow profile applies?
Yes, the 3KASMC36AHE3_B/H meets MSL Level 1 per J-STD-020, meaning it has unlimited floor life and can withstand peak reflow temperatures up to 260 °C without preconditioning. This eliminates baking requirements and simplifies manufacturing for high-volume automotive PCB assembly lines.
How does the 3KASMC36AHE3_B/H differ from the standard SMCJ36A in terms of leakage and qualification?
The 3KASMC36AHE3_B/H specifies maximum reverse leakage of 1 μA at 36 V (VWM), versus 5 μA for SMCJ36A, and carries full AEC-Q101 qualification - whereas SMCJ36A is industrial-grade only. These differences make the 3KASMC36AHE3_B/H preferred for automotive designs requiring lower standby current and certified reliability.
3KASMC36AHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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_B/H FAQ
1.How can I place an order for 3KASMC36AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC36AHE3_B/H 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_B/H reliable?
The price and inventory of 3KASMC36AHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KASMC36AHE3_B/H is usually 5 days.
3.What payment methods are accepted for 3KASMC36AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC36AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC36AHE3_B/H?
3KASMC36AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC36AHE3_B/H 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_B/H?
For technical support, including 3KASMC36AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC36AHE3_B/H requirements.
6.How does Aetrix verify that 3KASMC36AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All 3KASMC36AHE3_B/H 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_B/H meets industry standards.
7.What is the process for return or replacement of 3KASMC36AHE3_B/H?
All 3KASMC36AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC36AHE3_B/H, 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_B/H part is unused and in its original packaging.
Return procedure for 3KASMC36AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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