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Vishay General Semiconductor - Diodes Division 3KASMC36AHE3_B/I
- Part No.:
- 3KASMC36AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC36AHE3_B/I.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,401
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Product details
Overview
3KASMC36AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in SMC (DO-214AB) package, rated for 36 V stand-off voltage (VWM), 42.1 V nominal breakdown (VBR), 3000 W peak pulse power (10/1000 μs), and 185 °C maximum junction temperature - deployed for automotive-grade overvoltage protection of power rails and signal lines in engine control units and ADAS sensor interfaces.
For engineers reviewing the 3KASMC36AHE3_B/I datasheet, 3KASMC36AHE3_B/I pinout, 3KASMC36AHE3_B/I application, or 3KASMC36AHE3_B/I equivalent, key selection criteria include clamping voltage (58.1 V at IPPM), AEC-Q101 qualification status, unidirectional polarity, thermal resistance (RθJL = 18.3 °C/W), and RoHS-compliant matte tin plating per J-STD-002.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping under repetitive surge stress up to TJ = 185 °C, with low incremental surge resistance enabling consistent voltage limiting during 10/1000 μs transients. Its unidirectional architecture provides forward conduction capability while suppressing reverse transients.
The device meets MSL Level 1 per J-STD-020 (260 °C peak reflow), features color-band cathode identification, and is qualified to AEC-Q101 - confirming suitability for automotive power electronics where reliability under thermal cycling and mechanical shock is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (nom) | 42.1 V at 1.0 mA - precise breakdown threshold ensuring predictable turn-on during overvoltage events |
| VC at IPPM | 58.1 V - clamping voltage under 51.6 A peak pulse current, defining worst-case protected circuit voltage |
| PPPM | 3000 W - surge energy handling capacity with 10/1000 μs waveform, supporting IEC 61000-4-5 compliance |
| TJ max | +185 °C - extended junction temperature rating enabling use in under-hood automotive environments |
| RθJL | 18.3 °C/W - low junction-to-lead thermal resistance supporting high-power dissipation without external heatsinking |
| Polarity | Unidirectional - allows forward conduction while suppressing reverse transients; cathode marked by band |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded compound UL 94 V-0 rated, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102, cathode identified by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side of protected line; enables bidirectional current path only when forward-biased |
| Cathode | Current exit terminal during forward conduction; clamping node during reverse transients | Marked by color band; connected to higher-potential side (e.g., VBUS or signal rail) to shunt surges to ground |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR drift < ±0.091 %/°C and long-term reliability under thermal cycling |
| AEC-Q101 qualification (HE3 suffix) | Validated for automotive applications including engine control, body electronics, and infotainment power rails |
| 3000 W peak pulse power (10/1000 μs) | Supports robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 transients |
| MSL Level 1 (260 °C peak) | Permits single-pass lead-free reflow without moisture-induced failure or delamination |
| Low RθJL = 18.3 °C/W | Reduces thermal stress during repeated surge events, extending lifetime in high-duty-cycle protection circuits |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients in passenger vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to clamp spikes above 36 V. Use Value: Clamps to 58.1 V at 51.6 A, preventing damage to downstream DC-DC converters and microcontrollers rated for ≤ 40 V input. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) in factory automation sensors exposed to ESD and inductive switching noise. IC Role / Device Role / Timing Role: TVS mounted across signal and return lines to absorb fast-rising transients before reaching ADC inputs. Use Value: Sub-1 ns response time and 58.1 V clamping ensure signal integrity remains intact during 8 kV contact ESD events per IEC 61000-4-2. |
| Telecom Power Supply Input | Consumer Device USB Port Protection |
Use Scenario: Front-end surge suppression on AC/DC adapter outputs feeding telecom base station control boards. IC Role / Device Role / Timing Role: Primary TVS on +48 V DC input rail, coordinated with upstream MOVs and downstream polymer PTCs. Use Value: 3000 W PPPM rating handles repetitive lightning-induced surges without degradation, validated over >1000 pulses at 80 % derating. |
Use Scenario: Overvoltage protection on VBUS line of USB-C ports in portable medical monitors and smart home hubs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBUS and GND to suppress hot-swap and charger-induced transients. Use Value: AEC-Q101 qualification ensures robustness against thermal stress during frequent plug/unplug cycles and ambient temperature swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/5AT | Lower PPPM (400 W), SMA package (DO-214AC), RθJA = 100 °C/W, no AEC-Q101 qualification | Suitable for cost-sensitive consumer electronics; not recommended for automotive or industrial environments requiring 3000 W surge handling | Select 3KASMC36AHE3_B/I when 3000 W clamping, AEC-Q101, and SMC thermal performance are required. |
| SMCJ36A | Same SMC package and 3000 W rating, but non-AEC-Q101, standard JEDEC marking, no HE3 suffix or whisker-tested terminations | Acceptable for industrial controls with less stringent reliability requirements; lacks automotive traceability and process controls | Choose 3KASMC36AHE3_B/I for production programs needing AEC-Q101 documentation, RoHS+halogen-free compliance, and JESD 201 Class 2 whisker resistance. |
Compared with SMAJ36A-E3/5AT and SMCJ36A, the 3KASMC36AHE3_B/I delivers superior thermal robustness (RθJL = 18.3 °C/W vs. ≥25 °C/W), guaranteed AEC-Q101 qualification, and enhanced process controls for automotive supply chains - making it the preferred choice for safety-critical and high-reliability deployments.
Availability
3KASMC36AHE3_B/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 3KASMC36AHE3_B/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, MOSFETs, optoelectronics, and passive components with emphasis on high-reliability, high-power, and automotive-qualified solutions.
The 3KASMCxxA family is designed specifically for high-energy transient suppression in harsh-environment applications - targeting automotive under-hood systems, industrial motor drives, and telecom infrastructure where thermal stability and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of the 3KASMC36AHE3_B/I under maximum surge conditions?
The 3KASMC36AHE3_B/I exhibits a maximum clamping voltage (VC) of 58.1 V when subjected to its rated peak pulse current (IPPM) of 51.6 A with a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The 3KASMC36AHE3_B/I maintains this clamping performance across its full operating temperature range up to +185 °C.
Is the 3KASMC36AHE3_B/I qualified for automotive applications?
Yes, the 3KASMC36AHE3_B/I is AEC-Q101 qualified, as confirmed by Vishay's official documentation and ordering code suffix HE3. It meets all stress tests defined in the AEC-Q101 standard, including high-temperature operating life, temperature cycling, and mechanical shock - making it suitable for engine control modules, ADAS cameras, and body control units. The 3KASMC36AHE3_B/I also complies with JESD 201 Class 2 whisker testing and RoHS requirements.
What package type does the 3KASMC36AHE3_B/I use, and what are its key mechanical features?
The 3KASMC36AHE3_B/I uses the SMC (DO-214AB) surface-mount package, with dimensions of 7.75 mm × 6.22 mm × 2.62 mm (L × W × H). Key mechanical features include UL 94 V-0 rated molding compound, matte tin-plated leads compliant with J-STD-002, cathode identification via color band, and MSL Level 1 rating for lead-free reflow up to 260 °C. The 3KASMC36AHE3_B/I is supplied in 13″ tape-and-reel format (3500 pcs/reel).
How does the thermal performance of the 3KASMC36AHE3_B/I compare to standard SMA or SMB TVS diodes?
The 3KASMC36AHE3_B/I offers significantly better thermal performance than SMA/SMB alternatives due to its SMC package geometry and low junction-to-lead thermal resistance (RθJL = 18.3 °C/W). This enables more efficient heat transfer to PCB copper, allowing sustained 3000 W surge handling without thermal runaway. In contrast, SMA devices typically exhibit RθJL > 30 °C/W and derate sharply above 125 °C - whereas the 3KASMC36AHE3_B/I maintains full rating up to +185 °C junction temperature.
What is the breakdown voltage tolerance for the 3KASMC36AHE3_B/I, and how is it tested?
The 3KASMC36AHE3_B/I has a specified breakdown voltage (VBR) range of 40.0 V (min) to 44.2 V (max) at 1.0 mA test current, with a nominal value of 42.1 V. This parameter is measured per ANSI/IEEE C62.35 using controlled DC current ramping and verified at TA = 25 °C. The 3KASMC36AHE3_B/I's VBR exhibits a temperature coefficient of +0.091 %/°C, enabling accurate prediction of behavior across its full -65 °C to +185 °C operating range.
3KASMC36AHE3_B/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:
- 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 (SMC)
3KASMC36AHE3_B/I FAQ
1.How can I place an order for 3KASMC36AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC36AHE3_B/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 3KASMC36AHE3_B/I reliable?
The price and inventory of 3KASMC36AHE3_B/I 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/I is usually 5 days.
3.What payment methods are accepted for 3KASMC36AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC36AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC36AHE3_B/I?
3KASMC36AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC36AHE3_B/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 3KASMC36AHE3_B/I?
For technical support, including 3KASMC36AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC36AHE3_B/I requirements.
6.How does Aetrix verify that 3KASMC36AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All 3KASMC36AHE3_B/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 3KASMC36AHE3_B/I meets industry standards.
7.What is the process for return or replacement of 3KASMC36AHE3_B/I?
All 3KASMC36AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC36AHE3_B/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 3KASMC36AHE3_B/I part is unused and in its original packaging.
Return procedure for 3KASMC36AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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