My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 5KASMC24AHM3_A/I
- Part No.:
- 5KASMC24AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
5KASMC24AHM3_A/I.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,328
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
5KASMC24AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for high-energy surge protection in automotive and industrial power rails. It delivers 5000 W peak pulse power (10/1000 μs), clamps at 38.9 V @ 128.5 A, and operates with 24 V stand-off voltage (VWM), 26.7–29.5 V breakdown (VBR), and 185 °C maximum junction temperature - deployed to safeguard MOSFETs and sensor signal lines against inductive switching transients.
For engineers reviewing the 5KASMC24AHM3_A/I datasheet, 5KASMC24AHM3_A/I pinout, 5KASMC24AHM3_A/I application, or 5KASMC24AHM3_A/I equivalent, key selection criteria include unidirectional polarity, SMC (DO-214AB) package compatibility, AEC-Q101 qualification, 2.0 μA max reverse leakage at VWM, and thermal resistance of 100 °C/W (junction-to-ambient) under standard mounting.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for junction stability up to TJ = 185 °C, enabling operation in under-hood automotive environments and high-reliability industrial controls. Its low incremental surge resistance and fast response time ensure effective clamping during sub-microsecond transients induced by relay or solenoid switching.
The device is rated for 5000 W peak pulse power per 10/1000 μs waveform, with clamping voltage VC = 38.9 V at IPPM = 128.5 A and thermal derating defined per Figure 2 - supporting robust protection without thermal runaway when mounted on minimum recommended pad layout or infinite heatsink.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - maximum continuous reverse operating voltage before conduction begins; sets system rail compatibility limit. |
| VBR (min/typ/max) | 26.7 / 28.1 / 29.5 V at 1.0 mA - defines precise breakdown threshold for predictable clamping onset. |
| VC @ IPPM | 38.9 V at 128.5 A - clamping voltage under full-rated surge; determines protected circuit's worst-case overvoltage exposure. |
| PPPM (10/1000 μs) | 5000 W - peak transient energy absorption capacity; validates suitability for ISO 7637-2 Pulse 5a/b and IEC 61000-4-5 Level 4 surges. |
| TJ max. | +185 °C - enables use in high-temperature engine compartments and industrial enclosures without derating penalties. |
| IR @ VWM | 2.0 μA - ultra-low leakage ensures minimal standby power loss and signal integrity in high-impedance sensor interfaces. |
| AEC-Q101 | Qualified - certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD47. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads, MSL Level 1 (260 °C reflow peak), cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage return path; forms current path during reverse-biased clamping event. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 24 V supply or sensor output); receives transient energy and initiates avalanche conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier design ensures stable VBR over lifetime and temperature, critical for long-term automotive deployments. |
| Thermal robustness | TJ = 185 °C rating allows uninterrupted operation in ambient temperatures up to +125 °C with proper PCB copper area. |
| Surge response fidelity | Sub-nanosecond response time and low dynamic impedance minimize overshoot during fast-rising transients (e.g., load dump). |
| Manufacturing compliance | Meets JESD201 Class 2 whisker resistance and J-STD-002 solderability standards for high-yield automated assembly. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply lines in engine control units (ECUs) and body control modules (BCMs) against ISO 7637-2 Pulse 5a (load dump) and Pulse 1 (inductive switch-off). IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and downstream DC/DC converter input. Use Value: Clamps transients to ≤38.9 V, preventing damage to 40 V-rated buck controllers and preserving system uptime in harsh thermal environments. |
Use Scenario: Shielding analog outputs of pressure or temperature sensors in factory automation PLC I/O modules from field-wiring-induced surges. IC Role / Device Role / Timing Role: Low-leakage (2.0 μA) TVS connected across sensor output and ground to suppress EFT bursts without loading the signal path. Use Value: Maintains signal accuracy while absorbing 5 kV ESD and 1 kV surge events per IEC 61000-4-2/4-4, meeting SIL-2 functional safety requirements. |
| Telecom DC Power Feeding | Motor Drive Gate Driver Protection |
Use Scenario: Safeguarding -48 V DC feeding circuits in remote radio units (RRUs) and base station power supplies against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Unidirectional TVS installed at power entry point upstream of hot-swap controllers and PMBus monitors. Use Value: Withstands repeated 5000 W pulses without parameter shift, ensuring multi-year field reliability in telecom infrastructure. |
Use Scenario: Protecting high-side gate driver ICs in 3-phase inverter stages from Miller-induced voltage spikes during IGBT/MOSFET switching transitions. IC Role / Device Role / Timing Role: TVS placed between gate drive output and source/emitter to clamp dv/dt-induced coupling transients. Use Value: Fast clamping limits gate overvoltage to safe levels (< ±20 V), preventing false turn-on and device destruction in motor drives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Lower PPPM (600 W), same VWM (24 V), SMC footprint not identical (SMB = DO-214AA, smaller), RθJA = 125 °C/W. | Not AEC-Q101 qualified; suitable only for commercial-grade consumer or office equipment. | Select SMBJ24A only if surge energy is ≤600 W and automotive qualification is unnecessary. |
| SMCJ24A | Same SMC (DO-214AB) package, identical pinout, 1500 W PPPM (10/1000 μs), VBR = 26.7–29.5 V, TJ max = 175 °C, AEC-Q101 qualified. | Limited to lower-energy transients (e.g., IEC 61000-4-5 Level 2); insufficient for full load-dump immunity. | Choose SMCJ24A where cost sensitivity outweighs need for 5 kW surge margin and extended temperature range. |
Compared with 5KASMC24AHM3_A/I, SMBJ24A offers reduced surge handling and no automotive qualification, while SMCJ24A matches the package and qualification but delivers only 30% of the peak pulse power - making 5KASMC24AHM3_A/I the sole option for AEC-Q101-compliant 5 kW transient suppression in SMC format.
Availability
5KASMC24AHM3_A/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC I/O modules, telecom DC power systems, and motor drive gate protection requiring stable component supply across extended temperature and high-reliability operational life.
Supply support for 5KASMC24AHM3_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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The 5KASMCxxA series belongs to Vishay's PAR® (Protected Avalanche Rated) TVS family, engineered specifically for high-temperature, high-energy surge immunity in mission-critical automotive and industrial power systems.
FAQ
What is the clamping voltage of the 5KASMC24AHM3_A/I under full-rated surge current?
The 5KASMC24AHM3_A/I clamps at 38.9 V when subjected to its maximum peak pulse current of 128.5 A (10/1000 μs waveform). This value is measured per standard test conditions in the Vishay datasheet (Document Number: 89432) and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The 5KASMC24AHM3_A/I maintains this clamping performance across its full operating temperature range.
Is the 5KASMC24AHM3_A/I suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the 5KASMC24AHM3_A/I is explicitly AEC-Q101 qualified, as confirmed in the Vishay datasheet (Revision: 19-Jan-2024, Document Number: 89432). It undergoes stress testing for high-temperature reverse bias, temperature cycling, and accelerated life validation - making it approved for use in engine control units, body electronics, and ADAS subsystems where automotive-grade reliability is mandatory. The 5KASMC24AHM3_A/I meets all required failure rate and parametric stability thresholds.
What does the "HM3_A/I" suffix indicate in the 5KASMC24AHM3_A/I part number?
The "HM3" denotes Vishay's halogen-free, RoHS-compliant, AEC-Q101-qualified molding compound and plating process; "A" is the revision code; and "I" specifies packaging in 13-inch diameter plastic tape and reel with 3500 units per reel. This distinguishes it from the "H" variant (7-inch reel, 850 units). The 5KASMC24AHM3_A/I is fully compatible with standard SMC (DO-214AB) pick-and-place and reflow processes.
How does the thermal resistance of the 5KASMC24AHM3_A/I affect PCB layout design?
The 5KASMC24AHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended pad layout. To maintain TJ ≤ 185 °C under sustained 6.5 W power dissipation, designers must allocate ≥1.5 cm² of 2-oz copper connected to both terminals. The 5KASMC24AHM3_A/I datasheet provides exact pad dimensions on page 4 to ensure compliance with MSL Level 1 and thermal performance targets.
Can the 5KASMC24AHM3_A/I be used in bidirectional configurations?
No, the 5KASMC24AHM3_A/I is unidirectional only, as stated in the Vishay datasheet features section. It conducts only during reverse-bias overvoltage events and blocks forward current like a standard diode. For bidirectional protection (e.g., AC lines or differential data buses), a separate symmetric TVS array or back-to-back configuration is required - the 5KASMC24AHM3_A/I cannot substitute for a bidirectional device without circuit redesign.
5KASMC24AHM3_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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 128.5A
- 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)
5KASMC24AHM3_A/I FAQ
1.How can I place an order for 5KASMC24AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KASMC24AHM3_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 5KASMC24AHM3_A/I reliable?
The price and inventory of 5KASMC24AHM3_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 5KASMC24AHM3_A/I is usually 5 days.
3.What payment methods are accepted for 5KASMC24AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KASMC24AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KASMC24AHM3_A/I?
5KASMC24AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KASMC24AHM3_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 5KASMC24AHM3_A/I?
For technical support, including 5KASMC24AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KASMC24AHM3_A/I requirements.
6.How does Aetrix verify that 5KASMC24AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 5KASMC24AHM3_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 5KASMC24AHM3_A/I meets industry standards.
7.What is the process for return or replacement of 5KASMC24AHM3_A/I?
All 5KASMC24AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 5KASMC24AHM3_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 5KASMC24AHM3_A/I part is unused and in its original packaging.
Return procedure for 5KASMC24AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5KASMC24AHM3_A/I Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
