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Vishay General Semiconductor - Diodes Division 5KASMC30AHM3_A/I
- Part No.:
- 5KASMC30AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
5KASMC30AHM3_A/I.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,529
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Product details
Overview
5KASMC30AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy surge protection in automotive and industrial power rails. It delivers 5000 W peak pulse power (10/1000 μs), clamps at ≤48.4 V at 103.3 A, and operates up to 185 °C junction temperature - enabling robust protection of MOSFETs and sensor signal lines in engine control units and battery management systems.
For engineers reviewing the 5KASMC30AHM3_A/I datasheet, 5KASMC30AHM3_A/I pinout, 5KASMC30AHM3_A/I application, or 5KASMC30AHM3_A/I equivalent, key selection criteria include its 30 V stand-off voltage, 33.3–36.8 V breakdown range at 1 mA, low incremental surge resistance, AEC-Q101 qualification, and SMC (DO-214AB) package compatibility with automated assembly.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to achieve stable clamping under repetitive surge stress and high-temperature operation. Its unidirectional polarity, 100 °C/W junction-to-ambient thermal resistance, and MSL Level 1 rating support reliable performance in reflow-soldered automotive modules.
The device meets ANSI/IEEE C62.35 surge standards and features a typical temperature coefficient of +0.090 %/°C for breakdown voltage - enabling predictable voltage shift across -65 °C to +185 °C operating range without derating ambiguity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse working voltage before leakage exceeds 2 μA |
| VBR (min/typ/max) | 33.3 / 35.1 / 36.8 V at 1 mA - ensures consistent avalanche initiation across production lot |
| VC @ IPPM | 48.4 V at 103.3 A - defines worst-case clamping level during 5000 W transient events |
| PPPM | 5000 W (10/1000 μs) - supports IEC 61000-4-5 Level 4 surge immunity compliance |
| TJ max | +185 °C - enables placement near high-power components in under-hood ECUs |
| Package | SMC (DO-214AB) - industry-standard 2-pin surface-mount outline with cathode band marking |
| AEC-Q101 | Qualified - validated for automotive-grade reliability per stress test requirements |
Pinout & Package
Package: SMC (DO-214AB), molded epoxy case meeting UL 94 V-0, matte tin-plated leads, JESD 201 Class 2 whisker resistant, cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or common return path; forms current path during reverse-biased clamping |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 12 V rail); absorbs positive transients via avalanche conduction |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable leakage (<2 μA at VWM) after 1000+ surge cycles |
| Thermal capability | 185 °C TJ max allows direct mounting on hot PCB zones without derating penalties |
| Surge response | Sub-nanosecond turn-on enables clamping before sensitive ICs experience overvoltage damage |
| Mounting reliability | MSL Level 1 rating permits single-reflow assembly without moisture-induced popcorn failure |
| Material compliance | Halogen-free, RoHS-compliant, and AEC-Q101 qualified - meets Tier-1 automotive BOM requirements |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Power Rail |
|---|---|
Use Scenario: Protecting microcontroller I/O and gate drivers from load-dump transients during alternator regulation faults. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12 V supply and ground to clamp spikes up to ±120 V. Use Value: 5000 W peak power rating sustains multiple ISO 7637-2 Pulse 5a events without degradation. | Use Scenario: Safeguarding PWM controller inputs against inductive kickback from solenoid valves and contactors. IC Role / Device Role / Timing Role: Standoff-rated TVS on 24 V auxiliary rail, triggered only during >30 V surges. Use Value: 30 V VWM avoids false triggering during normal 24 V nominal operation with ripple. |
| Automotive Battery Management System (BMS) | Telecom DC Power Interface |
Use Scenario: Clamping voltage transients induced by relay switching in high-voltage battery disconnect circuits. IC Role / Device Role / Timing Role: High-reliability TVS on 48 V or 12 V monitoring lines feeding analog front-end ADCs. Use Value: AEC-Q101 qualification ensures long-term stability under thermal cycling and vibration stress. | Use Scenario: Surge suppression on -48 V telecom power feeds exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS referenced to system ground, absorbing positive transients on negative rail. Use Value: 48.4 V clamping voltage limits downstream regulator input stress within safe SOA limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A | Lower peak power (600 W), same VWM/VBR range, SMB package (smaller footprint, higher RθJA) | Suitable for space-constrained consumer electronics; not rated for 185 °C or AEC-Q101 | Select when board area is critical and surge energy is ≤600 W |
| 5.0SMDJ30A | Same 5000 W rating but larger SMD package (DO-214AC), higher capacitance (~200 pF vs. ~100 pF) | Better thermal mass for repeated surges; less suitable for high-frequency signal lines due to capacitance | Select when thermal cycling endurance outweighs layout density constraints |
Compared with SMBJ30A and 5.0SMDJ30A, the 5KASMC30AHM3_A/I uniquely combines AEC-Q101 qualification, 185 °C operation, and SMC footprint - making it the only option qualified for under-hood automotive deployment where both reliability and standardized assembly are mandatory.
Availability
5KASMC30AHM3_A/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial motor drive protection, and telecom DC interface hardening requiring stable component supply across multi-year production cycles.
Supply support for 5KASMC30AHM3_A/I 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 high-reliability and automotive-grade performance.
The 5KASMC series was engineered specifically for high-energy transient suppression in harsh-environment applications - targeting engine control, battery management, and industrial power systems where AEC-Q101 compliance and 185 °C operation are non-negotiable.
FAQ
What is the maximum clamping voltage of the 5KASMC30AHM3_A/I under full-rated surge current?
The 5KASMC30AHM3_A/I exhibits a maximum clamping voltage (VC) of 48.4 V when subjected to its peak pulse current (IPPM) of 103.3 A, measured using the standard 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and is critical for ensuring downstream ICs remain within their absolute maximum voltage ratings during surge events. The 5KASMC30AHM3_A/I datasheet specifies this parameter in the Electrical Characteristics table under "Maximum Clamping Voltage at IPPM".
Is the 5KASMC30AHM3_A/I suitable for bidirectional surge protection?
No, the 5KASMC30AHM3_A/I is a unidirectional TVS diode and is not suitable for bidirectional protection. Its electrical structure and polarity marking (cathode band) are designed exclusively for clamping positive transients on a line referenced to ground. For bidirectional applications - such as AC signal lines or differential buses - a dedicated bidirectional part like the 5KASMC30CA must be used. The 5KASMC30AHM3_A/I datasheet explicitly states "Available in unidirectional polarity only" in the Features section.
What does the "HM3_A/I" suffix indicate in 5KASMC30AHM3_A/I?
The "HM3_A/I" suffix in 5KASMC30AHM3_A/I denotes the packaging and revision code: "HM3" identifies the halogen-free, RoHS-compliant, AEC-Q101-qualified SMC package; "A" is the revision code per Vishay's internal documentation; and "I" specifies the 13-inch tape-and-reel delivery format with 3500 units per reel. This ordering code is confirmed in the Ordering Information table of the 5KASMC30AHM3_A/I datasheet (Document Number 89432).
How does the 5KASMC30AHM3_A/I perform at elevated temperatures?
The 5KASMC30AHM3_A/I maintains full functionality up to a junction temperature of +185 °C, with breakdown voltage shifting predictably at +0.090 %/°C. Its power dissipation derates linearly above 25 °C per the published curve (Figure 5), and thermal resistance values (RθJA = 100 °C/W, RθJM = 20.8 °C/W) enable accurate thermal modeling in high-ambient environments. This performance is validated per AEC-Q101 stress testing and documented in the Thermal Characteristics section of the 5KASMC30AHM3_A/I datasheet.
Can the 5KASMC30AHM3_A/I replace older SMA-based TVS diodes in existing designs?
The 5KASMC30AHM3_A/I uses the SMC (DO-214AB) package, which is physically larger than SMA (DO-214AC) and incompatible with SMA footprints. While both packages share similar pinout polarity (cathode band), the 5KASMC30AHM3_A/I requires revised PCB layout due to its 7.11 mm × 6.22 mm body size versus SMA's 4.6 mm × 2.8 mm. Therefore, it is not a drop-in replacement; redesign is required. The 5KASMC30AHM3_A/I mechanical drawings confirm these dimensions in Document Number 89432, page 4.
5KASMC30AHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 103.3A
- 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 (SMC)
5KASMC30AHM3_A/I FAQ
1.How can I place an order for 5KASMC30AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KASMC30AHM3_A/I 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_A/I reliable?
The price and inventory of 5KASMC30AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KASMC30AHM3_A/I is usually 5 days.
3.What payment methods are accepted for 5KASMC30AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KASMC30AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KASMC30AHM3_A/I?
5KASMC30AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KASMC30AHM3_A/I 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_A/I?
For technical support, including 5KASMC30AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KASMC30AHM3_A/I requirements.
6.How does Aetrix verify that 5KASMC30AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 5KASMC30AHM3_A/I 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_A/I meets industry standards.
7.What is the process for return or replacement of 5KASMC30AHM3_A/I?
All 5KASMC30AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 5KASMC30AHM3_A/I, 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_A/I part is unused and in its original packaging.
Return procedure for 5KASMC30AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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