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Vishay General Semiconductor - Diodes Division 3KASMC17AHE3_A/H
- Part No.:
- 3KASMC17AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC17AHE3_A/H.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,084
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Product details
Overview
3KASMC17AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount 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 pulse current (IPPM). It operates up to TJ = 185 °C and is AEC-Q101 qualified for automotive power line protection.
For engineers reviewing the 3KASMC17AHE3_A/H datasheet, 3KASMC17AHE3_A/H pinout, 3KASMC17AHE3_A/H application, or 3KASMC17AHE3_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 for DC bus and battery-line surge suppression.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping under repetitive transients and high-temperature operation up to 185 °C. Its junction passivation enables robust performance in automotive under-hood environments where thermal cycling and humidity are critical.
The device exhibits fast response time (<1 ns), low clamping ratio (VC/VBR ≈ 1.35), and meets JESD22-B102 solderability standards with matte tin-plated leads. It is designed for single-pulse transient suppression per IEC 61000-4-5 and ANSI/IEEE C62.35 guidelines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bus operating margin. |
| VBR (min/max) | 18.9 V / 20.9 V at IT = 1 mA - Confirmed breakdown threshold ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 27.6 V at 109 A - Clamping voltage limits downstream IC/MOSFET stress during 3000 W surge (10/1000 μs). |
| PPPM | 3000 W - Peak pulse power rating determines survivability against lightning-induced or load-dump surges. |
| TJ max. | 185 °C - Enables placement near hot components (e.g., power converters, engine control units) without derating. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing. |
| Package | DO-214AB (SMC) - Standardized SMT footprint with 7.75 mm × 6.22 mm body and 2.06 mm lead spacing for automated assembly. |
Pinout & Package
DO-214AB (SMC) package with cathode indicated by color band; two-terminal device with no internal circuitry requiring orientation beyond polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage rail; forms return path during clamping conduction. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 12 V battery rail); carries full surge current into anode during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Enables stable leakage (<1 μA at VWM) and breakdown voltage consistency across 1000+ thermal cycles. |
| MSL Level 1 | Allows unlimited floor life and reflow at 260 °C peak without baking, simplifying SMT production flow. |
| Low Rsurge | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a), improving system immunity. |
| Uni-directional polarity | Optimized for DC-biased lines (e.g., automotive battery feeds), eliminating reverse leakage concerns in positive-rail applications. |
| RoHS & Halogen-Free | Complies with JEDEC JS709A and EU Directive 2011/65/EU, supporting green manufacturing and end-of-life compliance. |
Applications
| Automotive Power Distribution | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protection of 12 V battery-fed ECUs against load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Primary clamping element placed between battery rail and upstream fuse or DC-DC converter input. Use Value: Limits voltage to ≤27.6 V during 3000 W surges, preventing damage to 36 V-rated input stages in power management ICs. |
Use Scenario: Surge suppression on AC/DC rectified bus feeding variable-frequency drives in factory automation. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing inductive kickback from contactor switching and regenerative braking energy. Use Value: Withstands repeated 109 A pulses without parameter shift, ensuring long-term reliability in 24/7 industrial operation. |
| Telecom DC Power Feeds | Consumer Appliance Control Boards |
Use Scenario: Input protection for PoE-powered remote radio units exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-line defense on 48 V DC input stage, coordinated with upstream GDT and downstream ceramic capacitors. Use Value: Fast <1 ns response captures sub-microsecond transients missed by slower MOVs, reducing failure rate in field-deployed units. |
Use Scenario: Protecting microcontroller I/O and relay driver circuits in washing machine main control boards from motor commutation noise. IC Role / Device Role / Timing Role: Localized TVS on 5 V/12 V supply rails adjacent to motor drivers and sensor interfaces. Use Value: 185 °C junction rating allows mounting directly on PCB near heat-generating triac drivers without thermal derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17A | Same VWM (17 V), lower PPPM (400 W), DO-214AC (SMA) package (smaller footprint, higher RθJA = 110 °C/W) | Limited to low-energy transients (e.g., ESD, board-level coupling); unsuitable for load dump or lightning. | Select when space-constrained and surge energy is <50 mJ; verify thermal margin at 125 °C ambient. |
| SMCJ17A | Same VWM (17 V), identical PPPM (3000 W), same DO-214AB (SMC) package, but rated only to TJ = 150 °C and not AEC-Q101 qualified | Acceptable for industrial/commercial use but lacks automotive qualification and high-temp stability. | Choose for cost-sensitive non-automotive designs where 185 °C operation and AEC-Q101 traceability are not required. |
Compared with SMAJ17A and SMCJ17A, the 3KASMC17AHE3_A/H delivers superior thermal robustness (185 °C vs. 150 °C or 125 °C), automotive qualification, and verified long-term stability under thermal cycling-critical for safety-critical vehicle subsystems.
Availability
3KASMC17AHE3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial motor controls, telecom power systems, and consumer appliance designs requiring stable component supply with full AEC-Q101 traceability and high-temperature reliability.
Supply support for 3KASMC17AHE3_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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on high-reliability and automotive-grade solutions.
The 3KASMC series belongs to Vishay's PAR® (Protection Against Real-world transients) family, engineered specifically for harsh-environment transient suppression where sustained high-temperature operation and AEC-Q101 validation are mandatory.
FAQ
What is the maximum clamping voltage of the 3KASMC17AHE3_A/H under full-rated surge conditions?
The 3KASMC17AHE3_A/H has a maximum clamping voltage (VC) of 27.6 V when subjected to its rated peak pulse current of 109 A (10/1000 μs waveform). This value is measured per ANSI/IEEE C62.35 and guarantees that downstream components see no more than 27.6 V during worst-case surge events, making it suitable for protecting 36 V-rated power management ICs in automotive applications.
Is the 3KASMC17AHE3_A/H compatible with lead-free reflow processes?
Yes, the 3KASMC17AHE3_A/H is fully compatible with lead-free reflow soldering, meeting J-STD-020 MSL Level 1 requirements with a maximum peak temperature of 260 °C. Its matte tin-plated leads are solderable per JESD 22-B102, and the molding compound complies with UL 94 V-0 flammability rating-ensuring reliable joint formation without voiding or delamination.
Does the 3KASMC17AHE3_A/H have AEC-Q101 qualification documentation available?
Yes, the 3KASMC17AHE3_A/H is explicitly AEC-Q101 qualified, as confirmed in Vishay document 89962 (Revision 05-Mar-13). Qualification includes stress tests for temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD), with full test reports available through Vishay's automotive support portal upon request for 3KASMC17AHE3_A/H.
What is the thermal resistance from junction to ambient for the 3KASMC17AHE3_A/H?
The typical thermal resistance from junction to ambient (RθJA) for the 3KASMC17AHE3_A/H is 77.5 °C/W when mounted on the minimum recommended pad layout per Vishay's DO-214AB footprint guidelines. This value assumes standard FR-4 PCB with 1 oz copper and no heatsink; actual thermal performance improves significantly with enhanced copper pour or thermal vias.
Can the 3KASMC17AHE3_A/H be used in bi-directional protection circuits?
No, the 3KASMC17AHE3_A/H is a unidirectional TVS diode and is not suitable for bi-directional protection. Its electrical characteristics-including breakdown voltage, clamping behavior, and leakage-are specified only for reverse-biased operation. For AC or dual-polarity DC lines, a dedicated bi-directional TVS such as SMBJ17CA must be selected instead of 3KASMC17AHE3_A/H.
3KASMC17AHE3_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:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 109A
- 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)
3KASMC17AHE3_A/H FAQ
1.How can I place an order for 3KASMC17AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC17AHE3_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 3KASMC17AHE3_A/H reliable?
The price and inventory of 3KASMC17AHE3_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 3KASMC17AHE3_A/H is usually 5 days.
3.What payment methods are accepted for 3KASMC17AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC17AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC17AHE3_A/H?
3KASMC17AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC17AHE3_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 3KASMC17AHE3_A/H?
For technical support, including 3KASMC17AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC17AHE3_A/H requirements.
6.How does Aetrix verify that 3KASMC17AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 3KASMC17AHE3_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 3KASMC17AHE3_A/H meets industry standards.
7.What is the process for return or replacement of 3KASMC17AHE3_A/H?
All 3KASMC17AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC17AHE3_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 3KASMC17AHE3_A/H part is unused and in its original packaging.
Return procedure for 3KASMC17AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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