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Vishay General Semiconductor - Diodes Division 5KASMC17AHM3/57
- Part No.:
- 5KASMC17AHM3/57
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
5KASMC17AHM3/57.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,862
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Product details
Overview
5KASMC17AHM3/57 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for high-energy surge clamping on power and signal lines. It features 17 V stand-off voltage (VWM), 18.9–20.9 V breakdown voltage (VBR at 1 mA), 5000 W peak pulse power (10/1000 µs), 181.2 A maximum peak pulse current (IPPM), and clamps to ≤27.6 V at rated surge. It is AEC-Q101 qualified and rated for TJ = –65 °C to +185 °C, targeting automotive and industrial electronics protection.
For engineers reviewing the 5KASMC17AHM3/57 datasheet, 5KASMC17AHM3/57 pinout, 5KASMC17AHM3/57 application, or 5KASMC17AHM3/57 equivalent, this page delivers verified electrical parameters, thermal resistance values (RθJA = 100 °C/W), clamping performance under standardized transients, and direct-fit alternatives for ESD/surge protection design-in.
Technical Context
This TVS diode operates as a voltage-clamping device in parallel with sensitive circuit nodes, activating when reverse voltage exceeds its breakdown threshold (VBR). Its passivated anisotropic rectifier structure ensures stable avalanche behavior and low incremental surge resistance under repetitive 10/1000 µs surges.
Designed for high-reliability environments, it supports junction temperatures up to +185 °C and meets MSL Level 1 (260 °C reflow peak), with halogen-free, RoHS-compliant construction (HM3 suffix) and matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 17 V - Maximum continuous reverse operating voltage before significant leakage; defines safe working margin below clamping onset. |
| VBR (Breakdown Voltage) | 18.9–20.9 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients. |
| PPPM (Peak Pulse Power) | 5000 W (10/1000 µs) - Sustains high-energy lightning/surge events without failure; validated per IEC 61000-4-5 waveform. |
| VC (Clamping Voltage) | ≤27.6 V at IPPM - Limits downstream voltage stress during full-rated surge; critical for MOSFET/IC overvoltage survival. |
| TJ max. | +185 °C - Enables operation in under-hood automotive or high-ambient industrial environments without derating. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on minimum recommended pad layout; informs PCB copper area requirements. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and surge lifetime testing. |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, cathode indicated by molded band. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H); terminals are matte tin-plated, compliant with JESD 201 Class 2 whisker test.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or lower-potential rail; forms return path for clamped surge current. |
| Cathode | Protected line input | Connected to line being protected (e.g., 12 V supply or CAN bus); avalanche conduction occurs here during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier technology enables stable, repeatable avalanche characteristics over lifetime and temperature. |
| High-temperature capability | TJ max. = +185 °C supports placement near heat sources (e.g., power converters) without derating or failure risk. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns), improving protection margin for fast-switching ICs. |
| MSL Level 1 rating | Compatible with standard SMT reflow profiles up to 260 °C peak, eliminating moisture sensitivity handling requirements. |
| Halogen-free & RoHS | HM3 suffix confirms compliance with environmental regulations and automotive material categorization (Doc. 99912). |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Parallel-connected clamping diode absorbing >5000 W surge energy within microseconds. Use Value: Prevents latch-up or permanent damage to microcontrollers and power management ICs exposed to ±100 V/50 ms pulses. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) shunt protector on 0–10 V or 4–20 mA signal paths. Use Value: Maintains signal integrity while clamping induced surges from nearby motor drives or relay switching. |
| Telecom DC Power Input Protection | Consumer Device USB Port Surge Suppression |
Use Scenario: Securing 48 V PoE-powered equipment inputs against lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Primary front-end TVS on DC input stage, coordinated with upstream fuses and filters. Use Value: Withstands repeated 5000 W surges without parameter drift, ensuring long-term field reliability in outdoor cabinets. |
Use Scenario: Adding robustness to USB-C power delivery circuits against ESD and hot-plug transients. IC Role / Device Role / Timing Role: Unidirectional clamp on VBUS line, placed after EMI filter but before buck converter. Use Value: Achieves <10 ns response time and ≤27.6 V clamping to protect USB PD controllers rated for 20 V absolute max. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17A | Same VWM (17 V) and package (DO-214AA), but lower PPPM (600 W) and IPPM (34.1 A); RθJA = 110 °C/W. | Suitable only for lower-energy transients (e.g., IEC 61000-4-2 ESD), not ISO 7637-2 load dump. | Select SMBJ17A only if system-level surge testing confirms <600 W requirement and thermal budget allows higher RθJA. |
| 5.0SMDJ17A | Same VWM and DO-214AB package, but higher PPPM (5000 W) and tighter VBR tolerance (18.9–20.0 V); AEC-Q101 not claimed. | Valid for industrial/commercial use where automotive qualification is not mandated; identical clamping (≤27.6 V). | Choose 5.0SMDJ17A when AEC-Q101 is unnecessary and tighter VBR distribution improves design margin. |
Compared with SMBJ17A and 5.0SMDJ17A, the 5KASMC17AHM3/57 uniquely combines AEC-Q101 qualification, +185 °C operation, and guaranteed 5000 W surge capability in a single DO-214AB device-making it the preferred choice for automotive and high-reliability industrial deployments requiring zero compromise on thermal or surge robustness.
Availability
5KASMC17AHM3/57 is available at Aetrix Electronics and suitable for automotive control units, industrial sensor interfaces, and telecom power supplies requiring stable component supply across extended product lifecycles.
Supply support for 5KASMC17AHM3/57 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 5KASMC series belongs to Vishay's PAR® (Protection Against Transients) family, engineered specifically for high-power, high-temperature surge suppression in automotive, industrial, and telecom infrastructure where failure is not an option.
FAQ
What is the clamping voltage of the 5KASMC17AHM3/57 at its rated peak pulse current?
The 5KASMC17AHM3/57 clamps to a maximum of 27.6 V when subjected to its full-rated peak pulse current (IPPM = 181.2 A) under the standard 10/1000 µs waveform. This value is measured and guaranteed per the Vishay datasheet (Document Number: 89432), and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. Designers use this VC value to verify that downstream components remain within their absolute maximum voltage ratings.
Is the 5KASMC17AHM3/57 suitable for automotive applications?
Yes, the 5KASMC17AHM3/57 is explicitly AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood and powertrain-related automotive applications. Its DO-214AB package, halogen-free HM3 construction, and validation against temperature cycling, high-temperature reverse bias (HTRB), and surge lifetime testing confirm compliance with automotive reliability standards. The 5KASMC17AHM3/57 is commonly deployed in engine control modules and body electronics for load-dump and ISO 7637-2 protection.
What does the "HM3/57" suffix mean in 5KASMC17AHM3/57?
The "HM3" suffix denotes Vishay's halogen-free, RoHS-compliant, AEC-Q101-qualified construction with matte tin-plated leads meeting JESD 201 Class 2 whisker resistance. The "/57" indicates the preferred packaging code: 7-inch diameter plastic tape and reel, containing 850 units per reel. This format is optimized for high-volume SMT assembly and aligns with industry-standard feeder compatibility. The 5KASMC17AHM3/57 thus guarantees both material compliance and production-ready logistics.
How does the thermal resistance of the 5KASMC17AHM3/57 affect PCB layout?
The 5KASMC17AHM3/57 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended pad layout per Vishay's datasheet. To maintain safe junction temperatures under continuous power dissipation (PD = 6.5 W), designers must allocate sufficient copper area-typically ≥100 mm² of 2 oz copper connected to both terminals-to reduce effective RθJA. Failure to do so risks exceeding the +185 °C TJ limit during sustained surge repetition or elevated ambient conditions.
Can the 5KASMC17AHM3/57 be used in bidirectional configurations?
No, the 5KASMC17AHM3/57 is unidirectional only, with polarity marked by a cathode band. It conducts and clamps only during reverse-biased overvoltage events on the cathode terminal. For bidirectional protection (e.g., AC lines or differential buses), two 5KASMC17AHM3/57 devices must be connected in series opposition-or a dedicated bidirectional TVS such as SMAJ17CA should be selected. Using a single 5KASMC17AHM3/57 in bidirectional mode will result in forward conduction and potential failure during positive transients.
5KASMC17AHM3/57 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):
- -
- Power - Peak Pulse:
- 5000W (5kW)
- 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)
5KASMC17AHM3/57 FAQ
1.How can I place an order for 5KASMC17AHM3/57 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KASMC17AHM3/57 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 5KASMC17AHM3/57 reliable?
The price and inventory of 5KASMC17AHM3/57 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KASMC17AHM3/57 is usually 5 days.
3.What payment methods are accepted for 5KASMC17AHM3/57?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KASMC17AHM3/57 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KASMC17AHM3/57?
5KASMC17AHM3/57 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KASMC17AHM3/57 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 5KASMC17AHM3/57?
For technical support, including 5KASMC17AHM3/57 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KASMC17AHM3/57 requirements.
6.How does Aetrix verify that 5KASMC17AHM3/57 is sourced from the original manufacturer or authorized distributors?
All 5KASMC17AHM3/57 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 5KASMC17AHM3/57 meets industry standards.
7.What is the process for return or replacement of 5KASMC17AHM3/57?
All 5KASMC17AHM3/57 units undergo pre-shipment inspection (PSI). If there is an issue with 5KASMC17AHM3/57, 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 5KASMC17AHM3/57 part is unused and in its original packaging.
Return procedure for 5KASMC17AHM3/57:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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