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Vishay General Semiconductor - Diodes Division 3KASMC17HE3_A/H
- Part No.:
- 3KASMC17HE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC17HE3_A/H.pdf
- Description:
- TVS DIODE 17VWM 30.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,476
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Product details
Overview
3KASMC17HE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor (TVS) diode in DO-214AB (SMC) package, rated for 3000 W peak pulse power (10/1000 μs), 17 V stand-off voltage (VWM), 18.9–20.9 V breakdown voltage (VBR), and 109 A peak surge current (IPPM). It operates up to TJ = 185 °C and is AEC-Q101 qualified for automotive power rail and sensor line protection.
For engineers reviewing the 3KASMC17HE3_A/H datasheet, 3KASMC17HE3_A/H pinout, 3KASMC17HE3_A/H application, or 3KASMC17HE3_A/H equivalent, key selection criteria include clamping voltage (VC = 27.6 V at IPPM), low incremental surge resistance, MSL Level 1 moisture sensitivity, and uni-directional polarity with cathode band marking - all critical for high-reliability automotive ECU and ADAS sensor interface designs.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for junction stability under high-temperature transients. Its 185 °C maximum junction temperature and AEC-Q101 qualification confirm suitability for under-hood automotive environments where thermal cycling and repetitive surge stress are common.
The device delivers 3000 W peak pulse power with a 10/1000 μs waveform and clamps at 27.6 V when subjected to its rated 109 A surge current. Its 77.5 °C/W junction-to-ambient thermal resistance and 18.3 °C/W junction-to-leads resistance support reliable power dissipation on standard PCB pad layouts without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal line or power rail standoff level. |
| VBR (min/max) | 18.9 V / 20.9 V - Breakdown occurs within this range at 1 mA test current; ensures predictable turn-on threshold across production lot. |
| VC @ IPPM | 27.6 V - Clamping voltage measured at 109 A peak surge; determines maximum transient voltage seen by protected IC or MOSFET. |
| PPPM | 3000 W - Peak pulse power handling capability per 10/1000 μs waveform; supports robust protection against ISO 7637-2 Load Dump and inductive switching spikes. |
| TJ max. | 185 °C - Maximum junction temperature rating; enables operation in high-ambient under-hood locations without derating penalties. |
| Package | DO-214AB (SMC) - Standardized surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.06 mm lead spacing; compatible with automated SMT assembly. |
| AEC-Q101 | Qualified - Certified for automotive-grade reliability including HTOL, temperature cycling, and HAST testing; required for ECUs, body control modules, and ADAS sensors. |
Pinout & Package
Package: DO-214AB (SMC), molded epoxy case with matte tin-plated leads, cathode indicated by color band. Meets UL 94 V-0 flammability rating and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-impedance return path; forms current path during reverse-biased clamping event. |
| Cathode | High-side connection point | Connected to protected line (e.g., 12 V rail or sensor output); marked by visible band; carries full surge current into anode during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process improves long-term stability under thermal cycling and humidity exposure. |
| MSL Level 1 | Rated for reflow up to 260 °C peak without baking; eliminates pre-bake requirement and reduces manufacturing overhead. |
| Low VF at 100 A | 3.5 V forward voltage ensures minimal conduction loss during high-current forward surges (e.g., reverse battery events). |
| Uni-directional polarity | Enables precise placement on DC-biased lines (e.g., automotive 12 V supply) without risk of unintended forward conduction. |
| 185 °C TJ capability | Supports uninterrupted operation in engine compartment environments where ambient temperatures exceed 125 °C. |
Applications
| Automotive Power Rail Protection | ADAS Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V supply inputs in engine control units (ECUs) against ISO 7637-2 Load Dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery feed and LDO input to limit voltage excursions below IC absolute maximum ratings. Use Value: 27.6 V clamping voltage ensures downstream regulators remain within safe operating area during 3000 W surge events. |
Use Scenario: Safeguarding CAN or LIN bus transceivers and radar sensor analog outputs from ESD and cable discharge events. IC Role / Device Role / Timing Role: Fast-response TVS placed at connector interface to shunt transients before they reach sensitive analog front-end circuitry. Use Value: Sub-nanosecond response time and 27.6 V clamping prevent latch-up or damage to 3.3 V/5 V signal chain components. |
| Industrial Motor Drive Control | Consumer Appliance Power Supply Input |
Use Scenario: Suppressing inductive kickback from brushed DC motors in HVAC actuators and power seat modules. IC Role / Device Role / Timing Role: TVS connected across motor terminals or H-bridge outputs to absorb energy from back-EMF during PWM commutation. Use Value: 109 A peak surge current rating handles repeated 200 A IFSM-level switching events without degradation. |
Use Scenario: Guarding primary-side rectifier and controller ICs in universal-input SMPS used in washing machines and refrigerators. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across bulk capacitor to clamp line surges and lightning-induced transients entering via AC mains. Use Value: 17 V VWM allows compatibility with 12–15 V auxiliary rails while maintaining margin above nominal DC bus voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17A | Lower PPPM (400 W), same DO-214AC (SMA) package, VWM = 17 V, VC = 27.7 V at 11.5 A | Not suitable for 3000 W load dump; limited to low-energy ESD and data-line protection | Select only for cost-sensitive consumer applications with <500 W surge requirements and space-constrained layouts. |
| SMCJ17A | Same DO-214AB (SMC) package, identical VWM/VC specs, but rated for 1500 W PPPM and 82 A IPPM | Lacks AEC-Q101 qualification and 185 °C TJ rating; not approved for automotive under-hood use | Acceptable for industrial controls or white goods where automotive qualification is not mandated and surge energy is moderate. |
Compared with SMAJ17A and SMCJ17A, the 3KASMC17HE3_A/H delivers triple the peak pulse power and full AEC-Q101 compliance - enabling single-device protection for demanding automotive power domains without derating or parallel staging.
Availability
3KASMC17HE3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, ADAS sensor interfaces, and industrial motor drive systems requiring stable component supply, long-lifecycle availability, and traceable sourcing.
Supply support for 3KASMC17HE3_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 belongs to Vishay's PAR® family of high-power TVS diodes, engineered specifically for automotive-grade transient suppression in harsh thermal and electrical environments - targeting ECU, body electronics, and ADAS subsystems.
FAQ
What is the clamping voltage of the 3KASMC17HE3_A/H under maximum surge conditions?
The 3KASMC17HE3_A/H has a maximum clamping voltage (VC) of 27.6 V when subjected to its rated 109 A peak pulse current (IPPM) using a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and ensures protected downstream components remain within their absolute maximum voltage ratings during transient events such as load dump or inductive switching.
Is the 3KASMC17HE3_A/H qualified for automotive applications?
Yes, the 3KASMC17HE3_A/H is AEC-Q101 qualified and rated for operation up to TJ = 185 °C, making it suitable for under-hood automotive applications including engine control units, body control modules, and ADAS sensor interfaces. Its qualification covers HTOL, temperature cycling, and HAST testing per automotive reliability standards.
What package type does the 3KASMC17HE3_A/H use, and what are its mounting requirements?
The 3KASMC17HE3_A/H uses the DO-214AB (SMC) surface-mount package with matte tin-plated leads. It requires the minimum recommended pad layout per Vishay specification, supports reflow up to 260 °C (MSL Level 1), and meets J-STD-002 and JESD 22-B102 solderability standards - no pre-bake needed prior to assembly.
How does the 3KASMC17HE3_A/H differ from standard SMAJ or SMCJ series TVS diodes?
The 3KASMC17HE3_A/H delivers 3000 W peak pulse power - double that of SMCJ17A (1500 W) and nearly eight times higher than SMAJ17A (400 W). It also features AEC-Q101 qualification and 185 °C junction rating, whereas SMAJ and SMCJ variants lack full automotive certification and thermal capability, limiting them to commercial or industrial use.
What is the polarity configuration of the 3KASMC17HE3_A/H, and how is it identified on the device?
The 3KASMC17HE3_A/H is unidirectional, with polarity indicated by a cathode band on the package body. The cathode terminal connects to the protected line (e.g., 12 V rail), while the anode connects to ground. This configuration ensures clamping only during reverse overvoltage events and prevents forward conduction under normal operation.
3KASMC17HE3_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)
3KASMC17HE3_A/H FAQ
1.How can I place an order for 3KASMC17HE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC17HE3_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 3KASMC17HE3_A/H reliable?
The price and inventory of 3KASMC17HE3_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 3KASMC17HE3_A/H is usually 5 days.
3.What payment methods are accepted for 3KASMC17HE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC17HE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC17HE3_A/H?
3KASMC17HE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC17HE3_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 3KASMC17HE3_A/H?
For technical support, including 3KASMC17HE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC17HE3_A/H requirements.
6.How does Aetrix verify that 3KASMC17HE3_A/H is sourced from the original manufacturer or authorized distributors?
All 3KASMC17HE3_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 3KASMC17HE3_A/H meets industry standards.
7.What is the process for return or replacement of 3KASMC17HE3_A/H?
All 3KASMC17HE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC17HE3_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 3KASMC17HE3_A/H part is unused and in its original packaging.
Return procedure for 3KASMC17HE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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