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Vishay General Semiconductor - Diodes Division 3KASMC17AHM3_A/H
- Part No.:
- 3KASMC17AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC17AHM3_A/H.pdf
- Description:
- TVS DIODE 17VWM 30.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,174
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Product details
Overview
3KASMC17AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor (TVS) diode designed for high-energy surge clamping in automotive and industrial power rails. It delivers 3000 W peak pulse power (10/1000 μs), clamps at 27.6 V under 109 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.
For engineers reviewing the 3KASMC17AHM3_A/H datasheet, 3KASMC17AHM3_A/H pinout, 3KASMC17AHM3_A/H application, or 3KASMC17AHM3_A/H equivalent, key selection criteria include its DO-214AB (SMC) package, 17 V stand-off voltage, AEC-Q101 qualification, 1.0 mA breakdown test current, and 1.0 μA max reverse leakage at VWM.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its unidirectional polarity and 185 °C maximum junction temperature support operation in under-hood automotive environments where thermal derating and reliability are critical.
The device meets MSL Level 1 per J-STD-020 with 260 °C reflow peak, uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and passes JESD 201 Class 2 whisker testing - confirming suitability for automated SMT assembly and long-term field deployment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for 12 V automotive systems. |
| VBR (min/max) | 18.9 V / 20.9 V at 1.0 mA - Confirmed breakdown threshold ensures predictable turn-on during overvoltage events. |
| PPPM | 3000 W (10/1000 μs) - Enables suppression of high-energy transients such as load dump or ISO 7637-2 Pulse 5a without failure. |
| IPPM | 109 A - Peak surge current capability directly supports clamping performance under standardized surge waveforms. |
| VC | 27.6 V at IPPM - Clamping voltage limits stress on downstream components like gate drivers or microcontrollers. |
| TJ max | 185 °C - Allows uninterrupted operation in high-ambient environments including powertrain and ADAS modules. |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive electronic components including HTRB, HTGB, and temperature cycling. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode indicated by color band. Dimensions: 7.75 mm × 6.22 mm × 2.90 mm (L × W × H); RoHS-compliant, halogen-free molding compound rated UL 94 V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; connected to protected circuit ground or low-side reference. | Enables unidirectional clamping from cathode to anode; must be routed to lowest impedance return path for effective transient shunting. |
| Cathode | Transient voltage sensing and clamping node; connected to line being protected (e.g., battery rail). | Reverse-biased during normal operation; avalanches precisely at VBR to divert surge energy away from sensitive loads. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Reduces leakage drift and improves long-term stability under thermal cycling and humidity exposure. |
| 185 °C junction rating | Supports placement near heat sources (e.g., power converters) without derating penalties in engine bay applications. |
| 3000 W peak pulse power | Handles worst-case ISO 7637-2 transients without degradation, eliminating need for parallel TVS devices. |
| MSL Level 1, 260 °C peak reflow | Eliminates moisture sensitivity concerns and enables standard lead-free reflow profiles without baking. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (<1 ns rise time), improving protection margin. |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive DC Bus |
|---|---|
Use Scenario: Suppressing load-dump transients (ISO 7637-2 Pulse 5a) on 12 V battery-fed ECUs in passenger vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and system input filter capacitor. Use Value: Clamps to 27.6 V at 109 A, limiting voltage stress on upstream fuse boxes and downstream DC/DC controllers. |
Use Scenario: Protecting IGBT gate drivers and bootstrap circuits from switching-induced voltage spikes in HVAC inverters. IC Role / Device Role / Timing Role: Fast-response surge suppressor mounted adjacent to motor controller PCB power entry points. Use Value: Sub-1 ns response time and 185 °C rating ensure reliable clamping during repeated 40 kHz PWM switching cycles. |
| Telecom Power Supply Input | Automotive Sensor Interface Protection |
Use Scenario: Guarding primary-side rectifiers and PFC controllers against lightning-induced surges on AC/DC front-ends. IC Role / Device Role / Timing Role: High-power TVS placed across bulk capacitor input terminals. Use Value: 3000 W rating absorbs 10/1000 μs surges exceeding 6 kV/3 kA common-mode test levels. |
Use Scenario: Shielding LIN bus transceivers and Hall-effect sensor signal lines from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS integrated into sensor module PCB near connector interface. Use Value: 1.0 μA leakage at 17 V preserves signal integrity while meeting ISO 10605 ±8 kV contact discharge requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17A-E3/57T (Vishay) | Lower PPPM (400 W), same DO-214AC (SMA) package, 17 V VWM, 27.6 V VC, but only 125 °C TJ max. | Not AEC-Q101 qualified; suitable for commercial-grade power supplies but not automotive under-hood use. | Select when cost-sensitive non-automotive designs require basic 17 V clamping with smaller footprint. |
| 1.5KE18A (ON Semiconductor) | Higher VC (27.7 V), same 3000 W rating, but through-hole DO-201AD package and 175 °C TJ max. | Lacks MSL Level 1 rating and JESD 201 whisker compliance; requires manual or wave soldering. | Choose only if legacy through-hole assembly is mandated and thermal margin above 175 °C is not required. |
Compared with SMAJ17A-E3/57T and 1.5KE18A, the 3KASMC17AHM3_A/H provides superior automotive readiness via AEC-Q101 qualification, 185 °C operation, and MSL Level 1 compatibility - making it the sole option among the three qualified for next-generation engine control modules requiring zero rework risk.
Availability
3KASMC17AHM3_A/H is available at Aetrix Electronics and suitable for automotive power management, industrial motor drives, telecom power supply inputs, and automotive sensor interface protection requiring stable component supply and full AEC-Q101 traceability.
Supply support for 3KASMC17AHM3_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, optoelectronics, and passive components for automotive, industrial, and computing markets.
The 3KASMC series was engineered specifically for AEC-Q101-compliant transient suppression in harsh-environment automotive power systems - emphasizing thermal resilience, surge robustness, and SMT manufacturability.
FAQ
What is the clamping voltage of the 3KASMC17AHM3_A/H under maximum surge conditions?
The 3KASMC17AHM3_A/H has a maximum clamping voltage (VC) of 27.6 V at 109 A peak pulse current (IPPM) using a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 standards and guarantees consistent overvoltage protection for downstream 12 V–15 V logic and power stages. The 3KASMC17AHM3_A/H maintains this clamping performance across its full operating temperature range.
Is the 3KASMC17AHM3_A/H qualified for automotive applications?
Yes, the 3KASMC17AHM3_A/H is AEC-Q101 qualified and explicitly rated for automotive use. It passes high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling tests defined in the AEC-Q101 standard. Its 185 °C maximum junction temperature and MSL Level 1 reflow rating further validate its suitability for under-hood engine control units and ADAS modules.
What package type does the 3KASMC17AHM3_A/H use, and what are its key mechanical features?
The 3KASMC17AHM3_A/H uses the DO-214AB (SMC) surface-mount package, measuring 7.75 mm × 6.22 mm × 2.90 mm. Key mechanical features include a UL 94 V-0 flammability-rated molding compound, matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and JESD 201 Class 2 whisker resistance - all confirmed in the official Vishay datasheet 89962.
How does the 3KASMC17AHM3_A/H compare to lower-power TVS diodes like SMAJ17A?
The 3KASMC17AHM3_A/H delivers 3000 W peak pulse power versus SMAJ17A's 400 W, supports 185 °C operation versus 125 °C, and carries full AEC-Q101 qualification - whereas SMAJ17A is commercial-grade only. The 3KASMC17AHM3_A/H also uses the larger DO-214AB package for improved thermal dissipation, making it appropriate for high-stress automotive and industrial deployments where SMAJ17A would fail prematurely.
What is the reverse leakage current specification for the 3KASMC17AHM3_A/H at its stand-off voltage?
The 3KASMC17AHM3_A/H specifies a maximum reverse leakage current (IR) of 1.0 μA at its 17 V stand-off voltage (VWM) and 25 °C ambient temperature. At elevated temperatures (TJ = 150 °C), leakage remains ≤50 μA - ensuring minimal power loss and signal integrity preservation in always-on automotive modules. This value is verified in Table 1 of Vishay document 89962.
3KASMC17AHM3_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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.5V
- Current - Peak Pulse (10/1000µs):
- 98.4A
- 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)
3KASMC17AHM3_A/H FAQ
1.How can I place an order for 3KASMC17AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC17AHM3_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 3KASMC17AHM3_A/H reliable?
The price and inventory of 3KASMC17AHM3_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 3KASMC17AHM3_A/H is usually 5 days.
3.What payment methods are accepted for 3KASMC17AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC17AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC17AHM3_A/H?
3KASMC17AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC17AHM3_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 3KASMC17AHM3_A/H?
For technical support, including 3KASMC17AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC17AHM3_A/H requirements.
6.How does Aetrix verify that 3KASMC17AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 3KASMC17AHM3_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 3KASMC17AHM3_A/H meets industry standards.
7.What is the process for return or replacement of 3KASMC17AHM3_A/H?
All 3KASMC17AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC17AHM3_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 3KASMC17AHM3_A/H part is unused and in its original packaging.
Return procedure for 3KASMC17AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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