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Vishay General Semiconductor - Diodes Division 5KASMC13AHM3/9A
- Part No.:
- 5KASMC13AHM3/9A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
5KASMC13AHM3/9A.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,326
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Product details
Overview
5KASMC13AHM3/9A 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 14.4 V to 15.9 V breakdown voltage (VBR), 13 V stand-off voltage (VWM), 5000 W peak pulse power (10/1000 µs), 232.6 A peak pulse current (IPPM), and 21.5 V maximum clamping voltage (VC) - deployed in automotive ECUs and industrial sensor interfaces for lightning and inductive-switching transient protection.
For engineers reviewing the 5KASMC13AHM3/9A datasheet, 5KASMC13AHM3/9A pinout, 5KASMC13AHM3/9A application, or 5KASMC13AHM3/9A equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, TJ = 185 °C operation, low clamping ratio (VC/VBR ≈ 1.43), and MSL Level 1 reflow compatibility - critical for under-hood automotive and high-reliability industrial PCB designs.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping performance across -65 °C to +185 °C junction temperature range. Its 100 °C/W junction-to-ambient thermal resistance (RθJA) and 20.8 °C/W junction-to-mount (RθJM) support robust thermal management on standard PCB pads without heatsinking.
The device responds to transients in <1 ps with low incremental surge resistance and meets IEC 61000-4-5 surge immunity requirements when applied per recommended pad layout. It is rated for non-repetitive 10/1000 µs waveform surges only and requires derating above TA = 25 °C per published curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 14.4 V / 15.9 V - ensures reliable turn-on before downstream IC damage at 13 V operating rail |
| VWM | 13 V - maximum continuous reverse voltage without significant leakage (≤10 µA @ 25 °C) |
| VC @ IPPM | 21.5 V - clamps 232.6 A surge to safe level for 12 V automotive systems |
| PPPM | 5000 W - handles severe ISO 7637-2 Pulse 5a/b transients in vehicle power nets |
| TJ max | +185 °C - supports under-hood placement near engines and power converters |
| Package | DO-214AB (SMCJ) - industry-standard SMT footprint with cathode band marking |
| AEC-Q101 | Qualified - validated for automotive-grade reliability per stress test requirements |
Pinout & Package
DO-214AB (SMCJ) package: molded epoxy case with matte tin-plated leads, MSL Level 1, JESD 201 Class 2 whisker resistant, UL 94 V-0 compliant. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node during clamping; defines unidirectional conduction path |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 12 V rail or sensor output); carries full surge current into ground |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Enables stable VBR and leakage performance over 185 °C lifetime operation |
| 5000 W peak pulse rating | Withstands 10/1000 µs surges up to 232.6 A - exceeds ISO 7637-2 Level IV requirements |
| Clamping ratio (VC/VBR) | ≈1.43 - minimizes overvoltage stress on protected MOSFETs or CAN transceivers |
| Low Rsurge | Ensures rapid voltage stabilization during fast-rising transients (<1 ns response) |
| Halogen-free & RoHS | HM3 suffix confirms compliance with environmental regulations and automotive material standards |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to shunt surge energy before it reaches LDOs or microcontrollers. Use Value: Clamps 5000 W surges to ≤21.5 V, preventing latch-up or gate oxide rupture in downstream 3.3 V/5 V logic. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted at connector interface to divert sub-100 ns ESD pulses away from precision ADC front-ends. Use Value: Maintains signal integrity with <10 µA leakage at 13 V, avoiding DC offset errors in mV-level sensor outputs. |
| Telecom DC Power Input Stage | Computer PSU Overvoltage Suppression |
Use Scenario: Safeguarding PoE-powered equipment inputs against induced surges on long Ethernet runs. IC Role / Device Role / Timing Role: Primary clamping device on 48 V DC input, coordinated with upstream fuse and secondary filtering. Use Value: Survives repeated 10/1000 µs surges up to 232.6 A while maintaining VWM = 13 V margin for 48 V system derating. |
Use Scenario: Secondary-side transient suppression on +12 V or +5 V rails inside ATX PSUs. IC Role / Device Role / Timing Role: Fast-response TVS parallel to bulk capacitors to absorb switch-mode noise and cross-regulation spikes. Use Value: 21.5 V clamping prevents false triggering of OVP circuits while supporting 185 °C ambient operation near transformer windings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13A-E3/57 | Lower PPPM (400 W), smaller SMA package, VC = 21.2 V at 19.9 A | Suitable for lower-energy consumer electronics; not AEC-Q101 qualified | Select when cost and board space outweigh automotive reliability needs |
| 1.5KE13A | Through-hole DO-201 package, same VWM/VBR, PPPM = 1500 W, no AEC-Q101 | Limited to prototyping or non-automotive production due to leaded form factor and lower surge rating | Choose only for legacy through-hole designs where rework tolerance is prioritized over surge capacity |
Compared with SMAJ13A-E3/57 and 1.5KE13A, the 5KASMC13AHM3/9A delivers 12.5× higher peak pulse power in an AEC-Q101-qualified SMT package, enabling single-device compliance with ISO 16750-2 transient immunity for automotive power domains - without compromising thermal margin or leakage stability.
Availability
5KASMC13AHM3/9A is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power input stages requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 5KASMC13AHM3/9A 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, MOSFETs, and protection devices with emphasis on high-reliability, high-temperature, and automotive-qualified components.
The 5KASMC series targets high-energy transient suppression in harsh environments - engineered specifically for AEC-Q101 compliance, 185 °C operation, and robust clamping in automotive power distribution and industrial automation systems.
FAQ
What is the maximum clamping voltage of the 5KASMC13AHM3/9A under full-rated surge current?
The 5KASMC13AHM3/9A has a maximum clamping voltage (VC) of 21.5 V when subjected to its rated peak pulse current of 232.6 A (10/1000 µs waveform). This value is measured per JEDEC test conditions and guarantees that protected circuitry sees no more than 21.5 V during worst-case surge events - critical for safeguarding 12 V automotive electronics and ensuring compatibility with downstream 3.3 V or 5 V logic interfaces.
Is the 5KASMC13AHM3/9A suitable for bidirectional transient protection?
No, the 5KASMC13AHM3/9A is unidirectional only, as confirmed in the Vishay datasheet's FEATURES section and ELECTRICAL CHARACTERISTICS table. It conducts only when cathode voltage exceeds anode by ≥VBR. For bidirectional protection, a pair of 5KASMC13AHM3/9A devices in series-opposing configuration or a dedicated bidirectional TVS such as 5KASMC13CA must be used - but the 5KASMC13AHM3/9A itself does not support symmetrical clamping.
Does the 5KASMC13AHM3/9A require a heatsink for continuous operation?
No, the 5KASMC13AHM3/9A is rated for 6.5 W power dissipation on an infinite heatsink but operates reliably without external heatsinking under normal conditions. Its 100 °C/W junction-to-ambient thermal resistance allows safe operation at full rated power on standard FR-4 PCBs with minimum recommended pad layout. Heatsinking is only needed if ambient temperature exceeds 100 °C or if repetitive surges demand enhanced thermal cycling endurance.
What does the "HM3/9A" suffix indicate in 5KASMC13AHM3/9A?
The "HM3" suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. The "/9A" specifies packaging: 3500-unit quantity on 13-inch plastic tape and reel. This distinguishes it from /57 (850 units on 7-inch reel) and confirms full compliance with automotive material and assembly standards required for production deployment.
How does the 5KASMC13AHM3/9A perform at elevated junction temperatures?
The 5KASMC13AHM3/9A maintains full specification compliance up to TJ = 185 °C, with VBR, VC, and leakage parameters characterized across the full -65 °C to +185 °C range. Its surge capability is derated linearly above TA = 25 °C per Figure 2 in the datasheet - e.g., at 125 °C ambient, peak pulse power drops to ~70 % of 5000 W - ensuring predictable performance in under-hood and industrial power-converter environments.
5KASMC13AHM3/9A 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):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- 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)
5KASMC13AHM3/9A FAQ
1.How can I place an order for 5KASMC13AHM3/9A through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KASMC13AHM3/9A 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 5KASMC13AHM3/9A reliable?
The price and inventory of 5KASMC13AHM3/9A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KASMC13AHM3/9A is usually 5 days.
3.What payment methods are accepted for 5KASMC13AHM3/9A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KASMC13AHM3/9A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KASMC13AHM3/9A?
5KASMC13AHM3/9A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KASMC13AHM3/9A 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 5KASMC13AHM3/9A?
For technical support, including 5KASMC13AHM3/9A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KASMC13AHM3/9A requirements.
6.How does Aetrix verify that 5KASMC13AHM3/9A is sourced from the original manufacturer or authorized distributors?
All 5KASMC13AHM3/9A 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 5KASMC13AHM3/9A meets industry standards.
7.What is the process for return or replacement of 5KASMC13AHM3/9A?
All 5KASMC13AHM3/9A units undergo pre-shipment inspection (PSI). If there is an issue with 5KASMC13AHM3/9A, 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 5KASMC13AHM3/9A part is unused and in its original packaging.
Return procedure for 5KASMC13AHM3/9A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5KASMC13AHM3/9A Tags
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