My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMC5K12AHM3_A/H
- Part No.:
- SMC5K12AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K12AHM3_A/H.pdf
- Description:
- TVS DIODE 12VWM 19.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,044
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMC5K12AHM3_A/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features 13.3–14.7 V breakdown voltage (VBR), 12 V stand-off voltage (VWM), and clamps to ≤19.9 V at 251 A peak pulse current (10/1000 μs), making it suitable for protecting MOSFETs and signal lines in automotive power systems.
For engineers reviewing the SMC5K12AHM3_A/H datasheet, SMC5K12AHM3_A/H pinout, SMC5K12AHM3_A/H application, or SMC5K12AHM3_A/H equivalent, key selection criteria include its AEC-Q101 qualification, 5000 W peak pulse power rating, low clamping voltage under surge, and halogen-free RoHS-compliant construction with M3/HM3 whisker-tested terminations.
Technical Context
This TVS diode operates as a unidirectional clamping device, activated when reverse voltage exceeds VWM = 12 V and fully conducting above VBR = 13.3–14.7 V. Its fast response time and low incremental surge resistance enable effective suppression of transients from inductive switching and ESD events.
Rated for -55 °C to +150 °C junction temperature, it delivers 5000 W peak pulse power (10/1000 μs) and withstands 30 kV HBM ESD per IEC 61000-4-2 - validated for automotive-grade reliability via AEC-Q101 qualification (HM3 suffix).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 13.3 V / 14.7 V - ensures reliable turn-on above circuit operating voltage while avoiding false triggering |
| VWM | 12 V - maximum continuous reverse voltage the device blocks without conduction |
| VC @ IPPM | ≤19.9 V at 251 A (10/1000 μs) - limits protected node voltage during surge to safe levels for downstream ICs |
| PPPM | 5000 W - sustains high-energy transients common in automotive load-dump and inductive kick scenarios |
| IPPM | 251 A (10/1000 μs) - peak current handling capacity directly tied to system-level surge immunity requirements |
| TJ max | +150 °C - supports operation in under-hood automotive environments and industrial enclosures |
| ESD Rating | 30 kV contact/air (IEC 61000-4-2) - provides robust immunity against human-body-model electrostatic discharge |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or lower-potential rail in unidirectional TVS configuration | Completes clamping path during transient - must be routed with low-inductance connection to reference plane |
| Cathode | Current exit terminal in forward bias; marked by color band, connected to protected line (e.g., power rail or signal) | Defines polarity-sensitive placement - reversal prevents clamping and risks device failure under surge |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics - meets stress test requirements for temperature cycling, humidity, and mechanical shock |
| 5000 W peak pulse power (10/1000 μs) | Enables protection against ISO 7637-2 Pulse 5a (load dump) and similar high-energy transients without derating in standard PCB layouts |
| Low clamping voltage (≤19.9 V @ 251 A) | Minimizes voltage overshoot on protected 12 V systems, preserving margin for 16 V-rated components such as gate drivers and microcontrollers |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets global environmental compliance mandates and supports lead-free reflow profiles up to 260 °C peak (MSL Level 1) |
| 30 kV HBM ESD immunity | Eliminates need for additional discrete ESD protection on exposed interfaces like sensor harnesses or LIN bus lines |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump transients during alternator regulation failure. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power input and ground, responding within nanoseconds to clamp voltage below 20 V. Use Value: Prevents latch-up or permanent damage to downstream PMICs and microcontrollers by limiting peak rail voltage to ≤19.9 V during 5000 W surges. |
Use Scenario: Shielding analog output lines of pressure sensors in factory automation equipment from EFT and inductive coupling. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across signal and ground, suppressing sub-microsecond transients without distorting 0–5 V DC output. Use Value: Maintains signal integrity under 30 kV ESD events and 4 kV EFT bursts while adding <10 pF parasitic capacitance at 0 V bias. |
| Telecom DC Power Input Protection | Computer Peripheral Port Protection |
|
Use Scenario: Safeguarding 12 V DC inputs of PoE-powered network switches against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power entry, coordinated with upstream fuses and secondary filtering. Use Value: Absorbs 8/20 μs surges up to 1660 A (per 8/20 μs rating) without degradation, ensuring >100,000 surge cycles in field deployment. |
Use Scenario: Hardening USB-C or HDMI port power pins against hot-plug induced transients and user-handling ESD. IC Role / Device Role / Timing Role: Standoff-rated TVS on VBUS line, rated for 12 V operation with fast response to prevent IC latch-up during plug insertion. Use Value: Clamps 15 kV air-gap ESD to <25 V within 1 ns, meeting IEC 61000-4-2 Level 4 without affecting USB 3.2 Gen 2 signal integrity. |
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-M3/87A | Lower peak pulse power (400 W vs. 5000 W); SMA package (smaller footprint, higher thermal resistance) | Intended for low-energy signal-line protection only - not suitable for power rail or automotive load-dump duty | Select only for space-constrained consumer electronics where surge energy is limited to <100 W |
| SMCJ12A-HM3 | Same SMC package and AEC-Q101 qualification; identical VWM/VBR, but rated for 1500 W (10/1000 μs) - not 5000 W | Lacks capability for full automotive load-dump compliance; used in non-critical subsystems like infotainment power rails | Choose when cost sensitivity outweighs need for highest surge margin - verify system-level testing against ISO 7637-2 Pulse 5a |
Compared with SMC5K12AHM3_A/H, SMAJ12A-M3/87A offers compact size but insufficient energy handling for power rails, while SMCJ12A-HM3 shares the same automotive qualification and footprint yet delivers only 30% of the peak pulse power - making SMC5K12AHM3_A/H the sole option for demanding 12 V load-dump protection.
Availability
SMC5K12AHM3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom power supplies, and computer peripheral protection requiring stable component supply across extended production lifecycles.
Supply support for SMC5K12AHM3_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, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The SMC5K series was engineered specifically for high-energy transient suppression in 12 V automotive and industrial power systems, prioritizing low clamping voltage, AEC-Q101 compliance, and robust surge endurance.
FAQ
What is the breakdown voltage range of the SMC5K12AHM3_A/H?
The SMC5K12AHM3_A/H has a specified breakdown voltage (VBR) range of 13.3 V to 14.7 V at 1.0 mA test current, measured per ANSI/IEEE C62.35 standards. This tight tolerance ensures consistent clamping behavior across production lots and supports reliable design margining for 12 V systems. The value is confirmed in the official Vishay datasheet document 87742, revision 09-Jan-2024.
Is the SMC5K12AHM3_A/H qualified for automotive use?
Yes, the SMC5K12AHM3_A/H carries the HM3 suffix, indicating full AEC-Q101 qualification per Vishay's documentation. It is certified for use in automotive applications including engine control modules, body electronics, and ADAS power domains. The qualification covers temperature cycling, mechanical shock, and humidity testing - explicitly validated for SMC5K10A through SMC5K20A variants.
What does the "HM3" suffix mean in SMC5K12AHM3_A/H?
The "HM3" suffix in SMC5K12AHM3_A/H denotes halogen-free, RoHS-compliant construction with matte tin-plated leads that meet JESD 201 Class 2 whisker resistance requirements. It also confirms AEC-Q101 qualification - a distinction from base "M3" parts, which lack automotive validation. This suffix is defined in Vishay's ordering information table on page 3 of document 87742.
Can the SMC5K12AHM3_A/H replace the SMCJ12A-HM3 in an existing design?
No direct replacement is assured: although both share the SMC package and AEC-Q101 qualification, the SMC5K12AHM3_A/H delivers 5000 W peak pulse power versus 1500 W for SMCJ12A-HM3. Substituting without layout or thermal review risks inadequate surge handling in load-dump conditions. System-level validation per ISO 7637-2 is required before interchange.
What is the maximum clamping voltage of the SMC5K12AHM3_A/H under surge conditions?
The SMC5K12AHM3_A/H clamps to a maximum of 19.9 V at 251 A peak pulse current using the 10/1000 μs waveform, as specified in the Electrical Characteristics table of Vishay's datasheet 87742. This value defines the upper voltage limit imposed on protected circuits during worst-case transients and is critical for ensuring compatibility with 16 V-rated downstream components.
SMC5K12AHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- 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):
- 251A
- Power - Peak Pulse:
- 5000W (5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMC5K12AHM3_A/H FAQ
1.How can I place an order for SMC5K12AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K12AHM3_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 SMC5K12AHM3_A/H reliable?
The price and inventory of SMC5K12AHM3_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 SMC5K12AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMC5K12AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K12AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K12AHM3_A/H?
SMC5K12AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K12AHM3_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 SMC5K12AHM3_A/H?
For technical support, including SMC5K12AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K12AHM3_A/H requirements.
6.How does Aetrix verify that SMC5K12AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMC5K12AHM3_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 SMC5K12AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMC5K12AHM3_A/H?
All SMC5K12AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K12AHM3_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 SMC5K12AHM3_A/H part is unused and in its original packaging.
Return procedure for SMC5K12AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K12AHM3_A/H 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 …
