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Vishay General Semiconductor - Diodes Division 3KASMC36AHM3_A/H
- Part No.:
- 3KASMC36AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC36AHM3_A/H.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,049
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Product details
Overview
3KASMC36AHM3_A/H 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 MOSFETs and ICs against inductive switching transients in engine control units and motor drives.
For engineers reviewing the 3KASMC36AHM3_A/H datasheet, 3KASMC36AHM3_A/H pinout, 3KASMC36AHM3_A/H application, or 3KASMC36AHM3_A/H equivalent, key selection criteria include its 36 V stand-off voltage, AEC-Q101 qualification, DO-214AB (SMC) package thermal performance, and verified 177 A peak pulse current capability per test conditions.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its unidirectional polarity and 1.0 mA breakdown test current ensure precise voltage threshold control during fast transient events.
The device meets J-STD-020 MSL Level 1 with 260 °C reflow peak, supports 200 A non-repetitive forward surge current (8.3 ms half-sine), and exhibits 77.5 °C/W typical junction-to-ambient thermal resistance on standard PCB pad layout - critical for sustained reliability in under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 36 V nominal systems. |
| VBR (min/max) | 40.0 V / 44.2 V - Breakdown voltage range at 1.0 mA test current; ensures consistent turn-on across production lots. |
| PPPM | 3000 W - Peak pulse power handling with 10/1000 μs waveform; enables suppression of high-energy load-dump surges. |
| IPPM | 51.6 A - Peak pulse current at which VC = 58.1 V; directly determines clamping headroom for protected downstream devices. |
| TJ max | 185 °C - Maximum junction temperature rating; supports operation in high-ambient under-hood locations without derating. |
| RθJA | 77.5 °C/W - Thermal resistance junction-to-ambient on minimum recommended pad layout; informs board-level thermal design. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, RoHS-compliant, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink node | Connected to protected line (e.g., 36 V rail); absorbs positive transients when forward-biased relative to anode. |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return plane; completes clamping loop during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable leakage (<1 μA at VWM) and long-term reliability at 185 °C. |
| Clamping ratio (VC/VBR) | 1.39–1.45 - Tight ratio between clamping voltage (58.1 V) and min breakdown (40.0 V) minimizes overvoltage stress on protected ICs. |
| Response time | <1 ps - Inherent semiconductor response enables sub-nanosecond turn-on to suppress ESD and fast-switching transients. |
| Surge robustness | 200 A IFSM (8.3 ms half-sine) - Withstands repeated motor commutation surges without degradation. |
| Whisker resistance | Meets JESD 201 Class 2 - Prevents tin whisker growth under thermal/humidity stress, critical for automotive long-life modules. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive DC Bus |
|---|---|
Use Scenario: Protection of 36 V supply rail against load-dump transients during alternator regulation failure. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed directly across input capacitor bank to limit voltage excursion to ≤58.1 V. Use Value: Prevents destruction of MCU, gate drivers, and analog sensors by suppressing 120 V/100 ms transients within 1 ps response window. |
Use Scenario: Safeguarding IGBT gate driver ICs from Miller-induced voltage spikes during high-dI/dt switching. IC Role / Device Role / Timing Role: Localized TVS mounted at gate driver output to clamp negative-going transients below -0.7 V. Use Value: Maintains gate oxide integrity by limiting reverse voltage to <1 V while sustaining 51.6 A peak clamping current. |
| Telecom Power Supply Input | Consumer Appliance Main Board |
Use Scenario: Secondary-side surge protection on 36 V telecom rectifier output feeding PoE injectors. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing lightning-induced surges coupled via AC mains or data lines. Use Value: Delivers 3000 W pulse power handling without derating at 70 °C ambient, meeting IEC 61000-4-5 Level 4. |
Use Scenario: Overvoltage protection for microcontroller VDD pins in washing machine main control board exposed to relay coil kickback. IC Role / Device Role / Timing Role: Low-capacitance TVS placed adjacent to MCU power pin to shunt transients before propagation. Use Value: Clamps 300 V/10 μs transients to 58.1 V within 1 ps, preventing latch-up and reset corruption in 3.3 V logic domains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A | Lower PPPM (600 W), higher VC (58.1 V vs. 59.0 V), same DO-214AA package but smaller thermal mass. | Limited to lower-energy surges; unsuitable for automotive load-dump where 3000 W capability is mandated. | Select 3KASMC36AHM3_A/H when full AEC-Q101 compliance and 3000 W pulse rating are required for harsh-environment designs. |
| SMCJ36A | Same DO-214AB package and 3000 W rating, but VBR range 40.0–44.4 V and VC = 58.1 V; not AEC-Q101 qualified. | Acceptable for industrial use but lacks automotive qualification evidence and high-temperature lifetime validation. | Choose 3KASMC36AHM3_A/H for automotive programs requiring documented AEC-Q101 test reports and 185 °C operation. |
Compared with SMBJ36A and SMCJ36A, the 3KASMC36AHM3_A/H provides guaranteed AEC-Q101 qualification, 185 °C junction rating, and identical clamping performance in a thermally superior DO-214AB package - making it the only option qualified for under-hood automotive deployment without design revalidation.
Availability
3KASMC36AHM3_A/H is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drive DC buses, and telecom power supply inputs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 3KASMC36AHM3_A/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 high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The 3KASMC series is part of Vishay's PAR® TVS platform engineered specifically for AEC-Q101-compliant, high-temperature transient suppression in automotive power distribution and industrial motor control systems.
FAQ
What is the maximum clamping voltage of the 3KASMC36AHM3_A/H under rated surge conditions?
The 3KASMC36AHM3_A/H has a maximum clamping voltage (VC) of 58.1 V at 51.6 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream components see no more than 58.1 V during worst-case surge events - a critical parameter for protecting 36 V-rated ICs and MOSFETs in automotive and industrial applications. The 3KASMC36AHM3_A/H maintains this clamping performance across its full operating temperature range.
Is the 3KASMC36AHM3_A/H qualified for automotive use?
Yes, the 3KASMC36AHM3_A/H is AEC-Q101 qualified and explicitly rated for TJ = 185 °C operation - meeting the stringent reliability requirements for under-hood automotive electronics. It undergoes full stress testing per the AEC-Q101 standard, including temperature cycling, high-temperature reverse bias, and ESD verification. The 3KASMC36AHM3_A/H is designated for automotive power rail protection in ECUs, body control modules, and ADAS subsystems where long-term field reliability is mandatory.
What package type does the 3KASMC36AHM3_A/H use, and what are its mounting requirements?
The 3KASMC36AHM3_A/H uses the DO-214AB (SMC) surface-mount package with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Mounting requires the minimum recommended pad layout specified in Vishay document 89962 - including 0.126" (3.20 mm) minimum cathode/anode pad width and 0.185" (4.69 mm) maximum overall length - to achieve the rated 77.5 °C/W thermal resistance and ensure MSL Level 1 reflow compatibility at 260 °C peak.
How does the 3KASMC36AHM3_A/H compare to standard SMCJ36A TVS diodes?
The 3KASMC36AHM3_A/H shares the DO-214AB package and 3000 W peak pulse rating with SMCJ36A, but adds AEC-Q101 qualification, 185 °C junction rating, and JESD 201 Class 2 whisker resistance - features absent in generic SMCJ36A variants. While both clamp at ~58.1 V, only the 3KASMC36AHM3_A/H provides documented automotive reliability data and high-temperature lifetime validation. For production automotive programs, the 3KASMC36AHM3_A/H is the validated choice.
What is the reverse leakage current specification for the 3KASMC36AHM3_A/H at maximum operating temperature?
At VWM = 36 V and TJ = 150 °C, the 3KASMC36AHM3_A/H specifies a maximum reverse leakage current (IR) of 20 μA - significantly tighter than the 50 μA typical for many competing TVS diodes. This low leakage ensures minimal standby power loss in always-on automotive modules and prevents false triggering in high-impedance sensor interfaces. The 3KASMC36AHM3_A/H maintains this performance across its full -65 °C to +185 °C operating range.
3KASMC36AHM3_A/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:
- 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)
3KASMC36AHM3_A/H FAQ
1.How can I place an order for 3KASMC36AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC36AHM3_A/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 3KASMC36AHM3_A/H reliable?
The price and inventory of 3KASMC36AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KASMC36AHM3_A/H is usually 5 days.
3.What payment methods are accepted for 3KASMC36AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC36AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC36AHM3_A/H?
3KASMC36AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC36AHM3_A/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 3KASMC36AHM3_A/H?
For technical support, including 3KASMC36AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC36AHM3_A/H requirements.
6.How does Aetrix verify that 3KASMC36AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 3KASMC36AHM3_A/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 3KASMC36AHM3_A/H meets industry standards.
7.What is the process for return or replacement of 3KASMC36AHM3_A/H?
All 3KASMC36AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC36AHM3_A/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 3KASMC36AHM3_A/H part is unused and in its original packaging.
Return procedure for 3KASMC36AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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