My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 5KASMC12AHM3_A/I
- Part No.:
- 5KASMC12AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
5KASMC12AHM3_A/I.pdf
- Description:
- TVS DIODE 12VWM 19.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,956
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
5KASMC12AHM3_A/I 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 ≤19.9 V under 251.3 A surge current, and operates up to 185 °C junction temperature. Used to protect MOSFETs and sensor signal lines against inductive switching transients.
For engineers reviewing the 5KASMC12AHM3_A/I datasheet, 5KASMC12AHM3_A/I pinout, 5KASMC12AHM3_A/I application, or 5KASMC12AHM3_A/I equivalent, key selection criteria include its AEC-Q101 qualification, SMC (DO-214AB) package thermal performance, unidirectional polarity, 12 V stand-off voltage, and 13.3–14.7 V breakdown range at 1 mA test current.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its junction design enables reliable operation at TJ = 185 °C and meets MSL Level 1 (260 °C reflow peak).
It is rated for non-repetitive 10/1000 μs surge waveforms with 5000 W peak power and exhibits fast response time and excellent clamping ratio (VC/VBR ≈ 1.42). The device is halogen-free, RoHS-compliant, and qualified per AEC-Q101 for automotive under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12 V - maximum continuous reverse operating voltage before leakage exceeds 10 μA |
| VBR (min/typ/max) | 13.3 / 14.0 / 14.7 V at 1 mA - ensures predictable turn-on during overvoltage events |
| VC @ IPPM | 19.9 V at 251.3 A - clamping voltage limits downstream component stress during surge |
| PPPM (10×1000 μs) | 5000 W - supports high-energy transient suppression in 12 V automotive systems |
| TJ max. | +185 °C - enables placement near hot components (e.g., power converters, engine control units) |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 0.320" x 0.246" footprint and 0.126" height |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMC (DO-214AB), molded case with matte tin-plated leads, cathode indicated by color band. Meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink during clamping | Connected to protected circuit ground or low-side return path |
| Cathode | Current source during clamping | Connected to protected line (e.g., 12 V rail, sensor supply); marked with band |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier structure improves long-term reliability under thermal cycling and humidity |
| High-temperature capability | Rated for continuous operation up to +185 °C junction temperature, supporting under-hood deployment |
| Peak pulse power | 5000 W (10/1000 μs) enables robust protection against ISO 7637-2 Pulse 1/2a/5a transients |
| Clamping performance | Low VC/VBR ratio (~1.42) minimizes voltage overshoot during surge events on sensitive nodes |
| Automotive qualification | AEC-Q101 certified with full test report coverage including HTGB, AC/DC life test, and ESD (HBM ≥ 8 kV) |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump and inductive switching spikes on 12 V battery-fed ECUs and body control modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp transients before they reach LDOs or microcontrollers. Use Value: Prevents latch-up or permanent damage to 5 V/3.3 V regulators and MCU I/O pins during ISO 16750-2 tests. | Use Scenario: Protecting analog front-ends of pressure, temperature, and position sensors in factory automation systems. IC Role / Device Role / Timing Role: Standoff-clamp TVS on sensor supply and output lines to absorb EFT bursts and cable discharge events. Use Value: Maintains signal integrity and avoids false readings caused by >1 kV ESD or 4 kV EFT coupling into 4–20 mA or CAN lines. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding 48 V DC input stages of PoE-powered switches and base station RF modules. IC Role / Device Role / Timing Role: Primary surge limiter on bulk DC input, upstream of DC/DC converters and hot-swap controllers. Use Value: Absorbs 5000 W surges without degradation, meeting IEC 61000-4-5 Level 4 (4 kV line-earth) requirements. | Use Scenario: Clamping back-EMF spikes from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Bidirectional-capable layout not required-unidirectional placement across motor terminals or flyback diode location. Use Value: Extends MOSFET lifetime by limiting VDS overshoot to ≤19.9 V during commutation, reducing avalanche stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A-E3/5A | Lower PPPM (400 W), smaller SMA package, same VWM (12 V), higher VC (20.1 V at 21.2 A) | Not AEC-Q101 qualified; limited to consumer/industrial use below 150 °C | Select when cost and board space constrain design, and surge energy remains <400 W |
| 1.5KE12A | Through-hole DO-201 package, 1500 W PPPM, same VWM (12 V), higher VC (20.1 V at 75 A) | Larger footprint and manual assembly; unsuitable for automated SMT lines or high-density layouts | Choose only if legacy through-hole manufacturing is mandatory and thermal derating allows |
Compared with SMAJ12A-E3/5A and 1.5KE12A, the 5KASMC12AHM3_A/I provides 12.5× higher surge power handling, AEC-Q101 compliance, and superior thermal robustness in SMT form-making it the preferred choice for automotive-grade 12 V rail protection where reliability and energy absorption are critical.
Availability
5KASMC12AHM3_A/I is available at Aetrix Electronics and suitable for automotive ECU power protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply and long-term lifecycle support.
Supply support for 5KASMC12AHM3_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, TVS devices, and optoelectronics with emphasis on reliability and high-temperature performance.
The 5KASMC series belongs to Vishay's PAR® (Protected Anisotropic Rectifier) family, engineered specifically for high-energy transient suppression in harsh environments such as automotive power systems and industrial controls.
FAQ
What is the breakdown voltage tolerance of the 5KASMC12AHM3_A/I?
The 5KASMC12AHM3_A/I has a specified breakdown voltage range of 13.3 V (min) to 14.7 V (max) at 1 mA test current, with a typical value of 14.0 V. This ±5% tolerance ensures consistent clamping behavior across production lots and supports robust design margining against overvoltage thresholds in 12 V systems.
Is the 5KASMC12AHM3_A/I suitable for bidirectional transient protection?
No-the 5KASMC12AHM3_A/I is unidirectional only, with cathode marked by a band. It protects against positive-going transients on the cathode side relative to anode. For bidirectional protection, two devices in series-opposing configuration or a dedicated bidirectional TVS like SMBJ12CA would be required.
What does the "HM3_A/I" suffix indicate in 5KASMC12AHM3_A/I?
The "HM3" denotes halogen-free, RoHS-compliant, AEC-Q101-qualified construction in SMC package; "A" is the revision code; "I" specifies 13-inch tape-and-reel packaging with 3500 units per reel. This distinguishes it from the "H" variant (7-inch reel, 850 units) and confirms full automotive qualification.
How does the thermal resistance of the 5KASMC12AHM3_A/I affect PCB layout?
The 5KASMC12AHM3_A/I has RθJA = 100 °C/W (on minimum pad) and RθJM = 20.8 °C/W (to mount). To maintain TJ ≤ 185 °C under 5000 W pulses, designers must use generous copper pour on both sides, thermal vias under the pads, and avoid enclosing the device in tight enclosures-especially in automotive under-hood applications.
Does the 5KASMC12AHM3_A/I meet any specific automotive transient immunity standards?
Yes-the 5KASMC12AHM3_A/I is validated for ISO 7637-2 Pulse 1 (inductive load dump), Pulse 2a (sudden load disconnect), and Pulse 5a (alternator load dump), due to its 5000 W PPPM rating and 19.9 V clamping voltage. Its AEC-Q101 qualification covers environmental stress testing required for these standards.
5KASMC12AHM3_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):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 19.9V
- Current - Peak Pulse (10/1000µs):
- 251.3A
- 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)
5KASMC12AHM3_A/I FAQ
1.How can I place an order for 5KASMC12AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KASMC12AHM3_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 5KASMC12AHM3_A/I reliable?
The price and inventory of 5KASMC12AHM3_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 5KASMC12AHM3_A/I is usually 5 days.
3.What payment methods are accepted for 5KASMC12AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KASMC12AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KASMC12AHM3_A/I?
5KASMC12AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KASMC12AHM3_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 5KASMC12AHM3_A/I?
For technical support, including 5KASMC12AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KASMC12AHM3_A/I requirements.
6.How does Aetrix verify that 5KASMC12AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 5KASMC12AHM3_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 5KASMC12AHM3_A/I meets industry standards.
7.What is the process for return or replacement of 5KASMC12AHM3_A/I?
All 5KASMC12AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 5KASMC12AHM3_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 5KASMC12AHM3_A/I part is unused and in its original packaging.
Return procedure for 5KASMC12AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5KASMC12AHM3_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 …
