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Vishay General Semiconductor - Diodes Division 5KASMC16AHM3_A/H
- Part No.:
- 5KASMC16AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
5KASMC16AHM3_A/H.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,657
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Product details
Overview
5KASMC16AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for high-energy surge clamping in automotive and industrial power rails. It delivers 5000 W peak pulse power (10/1000 μs), clamps at ≤26.0 V under 192.3 A surge current, and operates up to 185 °C junction temperature - enabling robust protection of MOSFETs and ICs against inductive switching transients.
For engineers reviewing the 5KASMC16AHM3_A/H datasheet, 5KASMC16AHM3_A/H pinout, 5KASMC16AHM3_A/H application, or 5KASMC16AHM3_A/H equivalent, key selection criteria include its 16 V stand-off voltage, 17.8–19.7 V breakdown range at 1 mA, low 2.0 μA reverse leakage at VWM, AEC-Q101 qualification, and SMC (DO-214AB) package compatibility with automated assembly.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping performance across -65 °C to +185 °C. Its unidirectional polarity and 100 °C/W junction-to-ambient thermal resistance require careful PCB pad layout per Vishay's recommended footprint for reliable power derating above 25 °C.
The device meets J-STD-020 MSL Level 1 (260 °C peak reflow) and JESD201 Class 2 whisker resistance. Its 0.081 %/°C temperature coefficient of VBR enables predictable breakdown voltage shift over temperature - critical for precision rail protection in engine control units and power converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - maximum continuous reverse operating voltage before significant leakage begins; sets upper limit for protected circuit DC rail |
| VBR (min/typ/max) | 17.8 / 18.8 / 19.7 V at 1 mA - defines precise clamping onset threshold; ensures reliable turn-on before downstream component damage |
| VC @ IPPM | 26.0 V at 192.3 A - clamped voltage during 5000 W surge; determines worst-case stress on protected load |
| IR @ VWM | 2.0 μA max at 25 °C - ultra-low leakage preserves battery life and signal integrity in always-on systems |
| TJ max | +185 °C - enables placement near hot components (e.g., power MOSFETs, inductors) without thermal derating penalties |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with cathode band marking; supports 850-unit 7″ tape-and-reel delivery |
Pinout & Package
Package: SMC (DO-214AB), molded epoxy case meeting UL 94 V-0; matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability; cathode identified by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink during clamping | Connected to protected circuit ground or low-side return path; carries full surge current to reference plane |
| Cathode | Current source during clamping | Connected to protected line (e.g., 12 V rail); voltage referenced to anode during transient suppression |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for under-hood ECUs |
| 5000 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 1/2a/5a surges without degradation; eliminates need for cascaded protection stages |
| 185 °C junction rating | Enables direct mounting on high-temperature PCB zones (e.g., near DC-DC converters) without thermal interface materials |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns rise time), improving protection margin for sensitive gate drivers |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive Control |
|---|---|
Use Scenario: Suppressing load-dump transients (ISO 16750-2) on 12 V battery-fed ECUs in engine compartments. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery input and upstream fuse or DC-DC converter input. Use Value: Limits voltage to ≤26.0 V during 120 V/50 ms transients, preventing overvoltage failure of 36 V-rated LDOs and microcontrollers. |
Use Scenario: Protecting gate driver ICs and IGBTs from inductive kickback in 3-phase motor inverters. IC Role / Device Role / Timing Role: Parallel-connected TVS on each phase output rail, referenced to DC bus ground. Use Value: Clamps 192.3 A surge within nanoseconds, limiting VCE stress on IGBTs and avoiding desaturation faults. |
| Telecom DC Power Feeds | Consumer Appliance Power Supplies |
Use Scenario: Safeguarding PoE-powered equipment (e.g., IP cameras) against lightning-induced surges on 48 V DC lines. IC Role / Device Role / Timing Role: Primary surge clamp at DC input connector, upstream of DC-DC regulation stage. Use Value: Withstands 5000 W pulses while maintaining <2.0 μA leakage - preserving efficiency and meeting EN 61000-4-5 Level 4 immunity. |
Use Scenario: Shielding MCU and sensor interfaces in washing machine main control boards from relay coil flyback. IC Role / Device Role / Timing Role: Localized TVS on 5 V/3.3 V supply rails feeding Hall-effect sensors and display drivers. Use Value: Fast response time and 185 °C rating allow placement near relays and triacs without thermal derating or board space penalty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A-E3/5AT | Lower PPPM (400 W), smaller SMA package, 16 V VWM, 17.8–19.8 V VBR | Limited to low-energy surges (e.g., ESD, board-level noise); not rated for automotive load dump | Select when cost and board space constrain design, and surge energy remains below 400 W |
| 1.5KE16CA | Higher PPPM (1500 W), through-hole DO-201 package, bidirectional, 16 V VWM | Requires manual insertion; unsuitable for high-volume SMT production; bidirectional conduction may interfere with DC bias | Choose only for legacy through-hole designs where rework flexibility outweighs automation and unidirectional precision needs |
Compared with SMAJ16A-E3/5AT and 1.5KE16CA, the 5KASMC16AHM3_A/H provides 12.5× higher surge power handling in an AEC-Q101-qualified SMT package, enabling single-device protection for harsh automotive and industrial environments without compromising manufacturability or thermal margin.
Availability
5KASMC16AHM3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial motor drives, telecom power feeds, and consumer appliance control boards requiring stable component supply and long-term lifecycle support.
Supply support for 5KASMC16AHM3_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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and high-temperature operation.
The 5KASMCxxA family was engineered specifically for AEC-Q101-compliant transient suppression in automotive power distribution and industrial motor control - prioritizing high surge capability, thermal resilience, and SMT manufacturability.
FAQ
What is the maximum clamping voltage of the 5KASMC16AHM3_A/H under full-rated surge current?
The 5KASMC16AHM3_A/H exhibits a maximum clamping voltage (VC) of 26.0 V when subjected to its peak pulse current (IPPM) of 192.3 A, measured using the standard 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage stress imposed on protected circuitry during worst-case transients.
Is the 5KASMC16AHM3_A/H suitable for bidirectional signal line protection?
No - the 5KASMC16AHM3_A/H is unidirectional only, with polarity marked by a cathode band. It conducts only when the cathode is positive relative to the anode. For bidirectional protection (e.g., data lines), a dedicated bidirectional TVS such as the SMBJ16CA must be used instead of the 5KASMC16AHM3_A/H.
Does the 5KASMC16AHM3_A/H require heatsinking for 6.5 W continuous power dissipation?
The 6.5 W power dissipation rating for the 5KASMC16AHM3_A/H applies only when mounted on an infinite heatsink at TM = 50 °C. In typical PCB applications with minimum recommended pad layout, derating is required - the datasheet specifies RθJA = 100 °C/W, meaning >1 W requires thermal-aware layout. The 5KASMC16AHM3_A/H is intended for transient, not continuous, power dissipation.
What does the "HM3_A/H" suffix indicate in the 5KASMC16AHM3_A/H part number?
The "HM3" denotes Vishay's halogen-free, RoHS-compliant, AEC-Q101-qualified SMC package with matte tin plating and JESD201 Class 2 whisker resistance. "A/H" specifies the revision code (A) and packaging format: 7″ diameter plastic tape and reel with 850 units per reel - confirmed in the official ordering information table for 5KASMC16AHM3_A/H.
How does the temperature coefficient affect the breakdown voltage of the 5KASMC16AHM3_A/H?
The 5KASMC16AHM3_A/H has a typical VBR temperature coefficient (αT) of +0.081 %/°C. This means its breakdown voltage increases by approximately 0.015 V per °C rise above 25 °C - e.g., at 150 °C, VBR rises ~1.2 V above its 25 °C nominal value. This positive drift improves margin against false triggering at high ambient temperatures.
5KASMC16AHM3_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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 192.3A
- 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)
5KASMC16AHM3_A/H FAQ
1.How can I place an order for 5KASMC16AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KASMC16AHM3_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 5KASMC16AHM3_A/H reliable?
The price and inventory of 5KASMC16AHM3_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 5KASMC16AHM3_A/H is usually 5 days.
3.What payment methods are accepted for 5KASMC16AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KASMC16AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KASMC16AHM3_A/H?
5KASMC16AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KASMC16AHM3_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 5KASMC16AHM3_A/H?
For technical support, including 5KASMC16AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KASMC16AHM3_A/H requirements.
6.How does Aetrix verify that 5KASMC16AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 5KASMC16AHM3_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 5KASMC16AHM3_A/H meets industry standards.
7.What is the process for return or replacement of 5KASMC16AHM3_A/H?
All 5KASMC16AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 5KASMC16AHM3_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 5KASMC16AHM3_A/H part is unused and in its original packaging.
Return procedure for 5KASMC16AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5KASMC16AHM3_A/H Tags
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