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Vishay General Semiconductor - Diodes Division 5KASMC30AHM3/9A
- Part No.:
- 5KASMC30AHM3/9A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
5KASMC30AHM3/9A.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,117
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Product details
Overview
5KASMC30AHM3/9A 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 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR), 48.4 V maximum clamping voltage at 103.3 A peak pulse current, 5000 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the 5KASMC30AHM3/9A datasheet, 5KASMC30AHM3/9A pinout, 5KASMC30AHM3/9A application, or 5KASMC30AHM3/9A equivalent, key selection criteria include clamping performance under 10/1000 µs transients, junction temperature capability up to +185 °C, unidirectional polarity, MSL Level 1 moisture sensitivity, and compatibility with automated SMT assembly using matte tin-plated leads.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of inductive switching spikes and lightning-induced surges. Its thermal design supports operation up to TJ = +185 °C and delivers 6.5 W steady-state power dissipation on an infinite heatsink.
The device operates exclusively in unidirectional configuration with cathode denoted by a color band, meets JESD201 Class 2 whisker resistance, and is halogen-free, RoHS-compliant, and qualified per AEC-Q101 - making it suitable for under-hood automotive electronics and industrial control systems requiring high-reliability transient protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 30 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 33.3–36.8 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 48.4 V at IPPM = 103.3 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; critical for IC/MOSFET survival. |
| PPPM (Peak Pulse Power) | 5000 W (10/1000 µs) - Energy-handling capacity for standardized surge waveforms; enables robust protection against IEC 61000-4-5 Level 4 threats. |
| TJ max. | +185 °C - Enables deployment in high-temperature environments such as engine control units and power inverters without derating. |
| Polarity | Unidirectional - Requires correct orientation in series with positive rail; blocks reverse leakage while clamping positive transients. |
| Package | DO-214AB (SMCJ) - Standardized SMT outline with 7.75 mm × 6.22 mm footprint; compatible with IPC-7351B land patterns and reflow profiles up to 260 °C peak. |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, unidirectional configuration with cathode indicated by molded band. Terminals are matte tin-plated, solderable per J-STD-002 and JESD22-B102, and meet JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes clamping loop when transient exceeds VBR. |
| Cathode | High-side connection point | Marked with color band; connects to protected line (e.g., 12 V rail or signal trace); conducts during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier structure reduces leakage drift and improves long-term stability at elevated temperatures. |
| AEC-Q101 qualification | Validated for automotive applications including powertrain and body electronics where failure modes must meet stringent stress-test requirements. |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow without baking; simplifies manufacturing logistics for high-volume SMT lines. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients, improving protection margin for sensitive downstream components. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients in passenger vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 30 V. Use Value: Withstands 5000 W pulses and operates up to +185 °C, ensuring compliance with ISO 7637-2 and AEC-Q101 requirements. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in PLC modules from ESD and field wiring faults. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across differential signal pair to suppress sub-100 ns transients without distorting signal integrity. Use Value: Clamps to 48.4 V at 103 A while maintaining <2 µA leakage at 30 V, preserving sensor accuracy and system noise floor. |
| Telecom DC Power Input Protection | Computer PSU Overvoltage Clamp |
Use Scenario: Safeguarding PoE-powered switches and base station RF modules from induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary clamping device on DC input stage, coordinated with upstream fuse and common-mode chokes. Use Value: Delivers 5000 W surge handling and meets UL 94 V-0 flammability, satisfying IEC 61000-4-5 and EN 62368-1 safety standards. |
Use Scenario: Secondary overvoltage protection on +12 V output rails of ATX PSUs to prevent damage during regulator failure. IC Role / Device Role / Timing Role: Fast-response TVS placed directly at VRM output capacitor bank to limit fault voltage before shutdown. Use Value: 48.4 V clamping ensures MOSFETs and capacitors remain within rated limits during sustained overvoltage conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A | Lower PPPM (400 W), smaller DO-214AC (SMA) package, 43.5 V clamping at 9.8 A | Targeted at lower-energy consumer electronics; insufficient for automotive load dump or industrial surge immunity | Select only for cost-sensitive, non-automotive designs with <500 W surge exposure. |
| SMCJ30A | Same DO-214AB package and 30 V VWM, but 5.0 kW rating and 48.4 V VC - identical electrical specs except for marking code and packaging variant | Functionally interchangeable in PCB layout and protection performance; differs only in reel size (3500 vs. 850) and date code format | Direct functional alternative with same thermal and clamping behavior; verify reel code (9A vs. 57) matches production planning. |
Compared with SMAJ30A and SMCJ30A, the 5KASMC30AHM3/9A provides identical clamping and package compatibility to SMCJ30A while offering superior surge margin versus SMAJ30A - making it optimal for AEC-Q101–mandated deployments where 5 kW pulse handling and +185 °C operation are required.
Availability
5KASMC30AHM3/9A is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface, and telecom DC input protection requiring stable component supply, full AEC-Q101 traceability, and consistent DO-214AB (SMCJ) packaging.
Supply support for 5KASMC30AHM3/9A 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, and protection devices with emphasis on reliability, thermal performance, and automotive qualification.
The 5KASMCx series was developed specifically for high-energy transient suppression in harsh-environment applications, combining AEC-Q101 validation, 185 °C junction capability, and 5 kW surge robustness in industry-standard SMCJ packaging.
FAQ
What is the clamping voltage of the 5KASMC30AHM3/9A under a 10/1000 µs surge?
The 5KASMC30AHM3/9A clamps to a maximum of 48.4 V when subjected to its rated peak pulse current of 103.3 A using the standard 10/1000 µs waveform. This value is measured per Figure 3 in the Vishay datasheet 89432 and represents the upper bound voltage seen by protected circuitry during worst-case surge events.
Is the 5KASMC30AHM3/9A suitable for automotive applications?
Yes, the 5KASMC30AHM3/9A is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood automotive applications including engine control units, body controllers, and ADAS power supplies. Its DO-214AB package and halogen-free construction further align with automotive manufacturing requirements.
Does the 5KASMC30AHM3/9A have bidirectional polarity?
No, the 5KASMC30AHM3/9A is unidirectional only. Polarity is marked by a cathode band on the package body, and it must be oriented with the cathode toward the protected line. Bidirectional variants are not offered in the 5KASMCxxA family.
What is the moisture sensitivity level (MSL) rating for the 5KASMC30AHM3/9A?
The 5KASMC30AHM3/9A meets MSL Level 1 per J-STD-020, meaning it has unlimited floor life and can undergo standard reflow soldering without pre-baking. This simplifies SMT assembly and eliminates moisture-related popcorning risks during manufacturing.
How does the 5KASMC30AHM3/9A differ from the SMCJ30A?
The 5KASMC30AHM3/9A and SMCJ30A share identical electrical specifications (VWM = 30 V, VBR = 33.3–36.8 V, VC = 48.4 V), DO-214AB package, and AEC-Q101 qualification. The difference lies in packaging suffix: HM3/9A denotes 13″ tape-and-reel (3500 pcs), whereas SMCJ30A may use alternate reel codes or date-marking formats - no functional or performance distinction exists.
5KASMC30AHM3/9A 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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- 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)
5KASMC30AHM3/9A FAQ
1.How can I place an order for 5KASMC30AHM3/9A through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KASMC30AHM3/9A 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 5KASMC30AHM3/9A reliable?
The price and inventory of 5KASMC30AHM3/9A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KASMC30AHM3/9A is usually 5 days.
3.What payment methods are accepted for 5KASMC30AHM3/9A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KASMC30AHM3/9A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KASMC30AHM3/9A?
5KASMC30AHM3/9A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KASMC30AHM3/9A 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 5KASMC30AHM3/9A?
For technical support, including 5KASMC30AHM3/9A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KASMC30AHM3/9A requirements.
6.How does Aetrix verify that 5KASMC30AHM3/9A is sourced from the original manufacturer or authorized distributors?
All 5KASMC30AHM3/9A 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 5KASMC30AHM3/9A meets industry standards.
7.What is the process for return or replacement of 5KASMC30AHM3/9A?
All 5KASMC30AHM3/9A units undergo pre-shipment inspection (PSI). If there is an issue with 5KASMC30AHM3/9A, 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 5KASMC30AHM3/9A part is unused and in its original packaging.
Return procedure for 5KASMC30AHM3/9A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5KASMC30AHM3/9A Tags
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