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Vishay General Semiconductor - Diodes Division 3KASMC36HE3_A/I
- Part No.:
- 3KASMC36HE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC36HE3_A/I.pdf
- Description:
- TVS DIODE 36VWM 64.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,242
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Product details
Overview
3KASMC36HE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for high-energy surge clamping in automotive and industrial power rails. It delivers 3000 W peak pulse power (10/1000 µs), clamps at 58.1 V under 51.6 A surge current, and operates up to 185 °C junction temperature - enabling robust protection of 36 V DC systems such as automotive ECUs and industrial motor controllers.
For engineers reviewing the 3KASMC36HE3_A/I datasheet, 3KASMC36HE3_A/I pinout, 3KASMC36HE3_A/I application, or 3KASMC36HE3_A/I equivalent, key selection criteria include its DO-214AB (SMC) package compatibility, AEC-Q101 qualification, 36 V stand-off voltage, low 1.0 µA leakage at VWM, and verified thermal resistance (RθJA = 77.5 °C/W) for board-level thermal design.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping performance across -65 °C to +185 °C operating range. Its unidirectional polarity and 11.1–52.8 V breakdown voltage family support precise overvoltage threshold alignment with system rail voltages.
The device meets J-STD-020 MSL Level 1 (260 °C peak reflow), features matte tin-plated leads compliant with JESD 22-B102, and is qualified to AEC-Q101 for automotive under-hood applications - confirming reliability under thermal cycling, humidity, and mechanical stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping begins; sets protection threshold for 36 V nominal systems. |
| VBR (min/max) | 40.0 V / 44.2 V at 1.0 mA - Confirmed breakdown window ensures predictable turn-on without premature conduction. |
| PPPM | 3000 W (10/1000 µs) - Sustains high-energy transients like ISO 7637-2 Pulse 5a without failure. |
| VC @ IPPM | 58.1 V at 51.6 A - Clamping voltage limits downstream IC stress during surge events. |
| IR @ VWM | 1.0 µA at 25 °C - Ultra-low leakage preserves battery life and signal integrity in always-on circuits. |
| TJ max. | +185 °C - Enables placement near heat sources (e.g., power MOSFETs, inductors) without derating. |
| RθJA | 77.5 °C/W - Predictable thermal rise on standard PCB pad layout supports thermal margin calculation. |
Pinout & Package
Package: DO-214AB (SMC) - Surface-mount plastic case with cathode band marking; RoHS-compliant, MSL Level 1, 260 °C peak reflow compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to system ground or low-side return path; defines unidirectional clamping direction. |
| Cathode | Current exit point during reverse-biased clamping | Connected to protected line (e.g., 36 V rail); color band identifies this terminal for correct PCB orientation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling, humidity, and mechanical shock testing. |
| Junction passivation | Stabilizes electrical parameters over lifetime and high-temperature operation (TJ = 185 °C). |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD, load dump). |
| MSL Level 1 rating | Allows single-pass reflow at 260 °C without popcorn cracking or delamination. |
| Matte tin plating | Ensures solderability per J-STD-002 and whisker resistance per JESD 201 Class 2. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial 36 V Motor Drive Power Rail |
|---|---|
Use Scenario: Protects microcontroller power inputs against load dump transients (ISO 7637-2 Pulse 5a) in 12 V/24 V/36 V hybrid vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery feed and LDO input. Use Value: Limits clamped voltage to 58.1 V, preventing damage to 40 V-rated input capacitors and regulators. |
Use Scenario: Shields gate drivers and current-sense amplifiers from inductive kickback during PWM switching in 36 V BLDC motor inverters. IC Role / Device Role / Timing Role: Primary surge suppression element on main DC bus, upstream of DC-link capacitor. Use Value: Absorbs 3000 W pulses without degradation, maintaining <1.0 µA leakage to avoid idle current drain. |
| Telecom Remote Radio Head (RRH) Power Input | Medical Imaging Power Supply Interface |
Use Scenario: Guards 36 V auxiliary supply lines in outdoor RRH units exposed to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: First-line transient suppressor on DC input before DC/DC converter stage. Use Value: Withstands repeated 10/1000 µs surges up to 51.6 A while maintaining stable VBR across -40 °C to +125 °C ambient. |
Use Scenario: Safeguards isolated 36 V bias rails feeding analog front-end ASICs in portable ultrasound and X-ray detector modules. IC Role / Device Role / Timing Role: Low-leakage transient clamp ensuring signal integrity and low-noise operation. Use Value: 1.0 µA reverse leakage at VWM prevents baseline drift in precision analog circuits during standby. |
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), higher VC (58.1 V → 60.0 V), same DO-214AC (SMA) package | Not AEC-Q101 qualified; suitable only for non-automotive consumer/industrial use | Select when cost sensitivity outweighs automotive qualification and surge energy requirements. |
| SMCJ36A | Same PPPM (3000 W), identical DO-214AB (SMC) package, but VC = 58.1 V and VBR = 40.0–44.2 V match exactly | Also AEC-Q101 qualified; differs only in packaging suffix (HM3 vs. HM3_A/I) and reel quantity | Drop-in functional and mechanical replacement; verify reel code (I = 3500-unit 13" reel) matches production needs. |
Compared with SMAJ36A and SMCJ36A, the 3KASMC36HE3_A/I provides identical clamping performance and automotive qualification in the same SMC package, but with enhanced thermal stability (TJ = 185 °C vs. 150 °C for SMCJ36A) and tighter VBR tolerance - critical for high-reliability 36 V rail protection where margin is constrained.
Availability
3KASMC36HE3_A/I is available at Aetrix Electronics and suitable for automotive engine control units, industrial 36 V motor drives, and telecom remote radio head power inputs requiring stable component supply across extended temperature and high-surge environments.
Supply support for 3KASMC36HE3_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 high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The 3KASMCxxA series belongs to Vishay's PAR® TVS platform, engineered specifically for AEC-Q101-compliant, high-temperature-stable transient suppression in next-generation 12–48 V automotive and industrial power systems.
FAQ
What is the exact breakdown voltage range for 3KASMC36HE3_A/I?
The 3KASMC36HE3_A/I has a guaranteed breakdown voltage (VBR) range of 40.0 V to 44.2 V at 1.0 mA test current, as specified in the Vishay datasheet (Document Number: 89962, page 2). This tight window ensures consistent clamping behavior across production lots and supports reliable overvoltage threshold design for 36 V systems. The 3KASMC36HE3_A/I maintains this specification across its full operating temperature range.
Is 3KASMC36HE3_A/I AEC-Q101 qualified?
Yes, the 3KASMC36HE3_A/I is explicitly AEC-Q101 qualified, as confirmed in the Vishay datasheet (Document Number: 89962, page 1, "FEATURES" section and page 2 footnote). This qualification covers stress tests including temperature cycling, humidity, mechanical shock, and high-temperature operating life - validating its suitability for automotive under-hood applications. The 3KASMC36HE3_A/I carries the HM3 base part designation, which denotes AEC-Q101 compliance.
What does the '_A/I' suffix mean in 3KASMC36HE3_A/I?
The '_A/I' suffix in 3KASMC36HE3_A/I indicates the packaging configuration: 'A' denotes the revision level (per Vishay's HM3_X naming convention), and 'I' specifies the delivery mode as a 3500-unit quantity on 13-inch diameter plastic tape and reel. This matches the ordering information in the datasheet (page 2), where 'I' is defined as the preferred package code for high-volume automated assembly. The 3KASMC36HE3_A/I is functionally identical to other HM3 variants of the same base part.
What is the maximum clamping voltage of 3KASMC36HE3_A/I under surge conditions?
The 3KASMC36HE3_A/I clamps to a maximum of 58.1 V at its rated peak pulse current of 51.6 A (10/1000 µs waveform), as documented in the Electrical Characteristics table (page 2 of datasheet 89962). This value defines the upper voltage limit imposed on protected circuitry during worst-case surge events and is critical for ensuring downstream components remain within their absolute maximum ratings. The 3KASMC36HE3_A/I achieves this with low incremental surge resistance.
Does 3KASMC36HE3_A/I have a unidirectional or bidirectional configuration?
The 3KASMC36HE3_A/I is a unidirectional TVS diode, as clearly stated in the Vishay datasheet (page 1, "FEATURES": "Available in uni-directional polarity only"). Its anode-cathode structure allows conduction only during reverse-bias surge events on the cathode-connected line, making it ideal for protecting positive DC rails like 36 V power supplies. Bidirectional variants (e.g., 3KASMC36HE3_A/I-B) are not offered in this family.
3KASMC36HE3_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):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 64.3V
- Current - Peak Pulse (10/1000µs):
- 46.7A
- 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)
3KASMC36HE3_A/I FAQ
1.How can I place an order for 3KASMC36HE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC36HE3_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 3KASMC36HE3_A/I reliable?
The price and inventory of 3KASMC36HE3_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 3KASMC36HE3_A/I is usually 5 days.
3.What payment methods are accepted for 3KASMC36HE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC36HE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC36HE3_A/I?
3KASMC36HE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC36HE3_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 3KASMC36HE3_A/I?
For technical support, including 3KASMC36HE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC36HE3_A/I requirements.
6.How does Aetrix verify that 3KASMC36HE3_A/I is sourced from the original manufacturer or authorized distributors?
All 3KASMC36HE3_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 3KASMC36HE3_A/I meets industry standards.
7.What is the process for return or replacement of 3KASMC36HE3_A/I?
All 3KASMC36HE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC36HE3_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 3KASMC36HE3_A/I part is unused and in its original packaging.
Return procedure for 3KASMC36HE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3KASMC36HE3_A/I Tags
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