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Vishay General Semiconductor - Diodes Division 1.5SMC12AHM3/I
- Part No.:
- 1.5SMC12AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC12AHM3/I.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,100
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Product details
Overview
1.5SMC12AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, designed for high-energy surge protection. It features a 12 V breakdown voltage (VBR = 11.4–12.6 V at 1 mA), 10.2 V stand-off voltage (VWM), and clamps transients to ≤16.7 V at 89.8 A peak pulse current (10/1000 µs), delivering 1500 W peak pulse power in automotive and industrial power rail protection.
For engineers reviewing the 1.5SMC12AHM3/I datasheet, 1.5SMC12AHM3/I pinout, 1.5SMC12AHM3/I application, or 1.5SMC12AHM3/I equivalent, this device is selected for robust overvoltage immunity in DC power inputs, sensor interface lines, and MOSFET gate protection where fast response (<1 ns), low clamping ratio (VC/VWM ≈ 1.64), and AEC-Q101 qualification are required.
Technical Context
The 1.5SMC12AHM3/I uses a glass-passivated silicon junction optimized for unidirectional transient suppression with low incremental surge resistance and excellent clamping linearity. Its thermal resistance (RθJL = 15 °C/W) enables reliable operation up to TJ = 150 °C under repetitive surges when mounted on 8.0 mm × 8.0 mm copper pads.
It meets J-STD-020 MSL Level 1 (peak reflow ≤260 °C), supports 200 A non-repetitive forward surge (8.3 ms half-sine), and exhibits <5 µA reverse leakage at VWM, ensuring minimal standby power loss in always-on circuits like automotive body control modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V at 1 mA - defines precise avalanche initiation threshold for predictable clamping onset |
| VWM | 10.2 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | ≤16.7 V at 89.8 A (10/1000 µs) - ensures protected ICs see no more than 16.7 V during worst-case surge |
| PPPM | 1500 W - sustains high-energy lightning or inductive-switching transients without failure |
| IFSM | 200 A (8.3 ms half-sine) - withstands motor startup or relay coil de-energization surges |
| TJ max | +150 °C - supports under-hood automotive environments and industrial enclosures |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 0.320" x 0.246" footprint and matte tin leads |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with UL 94 V-0 flammability rating; cathode indicated by band on one end; terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., 12 V supply); band-marked end carries full surge current during clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensors requiring zero-failure reliability |
| 1500 W peak pulse power (10/1000 µs) | Handles ISO 7637-2 Pulse 1, 2a, 3a/b and IEC 61000-4-5 Level 4 surges without degradation |
| Low clamping ratio (VC/VWM ≈ 1.64) | Minimizes overvoltage stress on downstream 12 V-rated ICs such as CAN transceivers and microcontrollers |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking or special handling |
| Halogen-free & RoHS-compliant (HM3 suffix) | Fulfills EU ELV and China RoHS environmental compliance for global OEM production |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: 12 V battery-fed ECUs exposed to load dump (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to clamp transients before they reach PMICs and MCU power inputs. Use Value: Clamps 12 V rail to ≤16.7 V during 1500 W surges, preventing latch-up or oxide breakdown in 12 V-input regulators. |
Use Scenario: Analog sensor outputs (e.g., pressure, temperature) routed across noisy factory floors. IC Role / Device Role / Timing Role: TVS installed at connector entry point to shunt ESD (IEC 61000-4-2) and cable discharge events. Use Value: Sub-1 ns response limits voltage overshoot to <17 V, preserving 24 V-tolerant op-amp input stages and ADC front-ends. |
| MOSFET Gate Protection | DC-DC Converter Input Protection |
|
Use Scenario: High-side N-channel MOSFETs driven by microcontroller GPIOs in motor drivers. IC Role / Device Role / Timing Role: TVS placed between gate and source to suppress Miller-induced voltage spikes during switching transitions. Use Value: Limits gate-source voltage to ≤16.7 V, avoiding gate oxide rupture while maintaining <10.2 V steady-state bias margin. |
Use Scenario: 24 V input to isolated DC-DC converters powering safety-critical logic rails. IC Role / Device Role / Timing Role: Primary surge clamp upstream of input filter and converter controller IC. Use Value: Absorbs 1500 W pulses without derating, enabling compact input stage design with no additional series impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12AHE3/A | Same VBR range (11.4–12.6 V) but SMB package (smaller footprint, 600 W PPPM) | Limited to ≤600 W surges; unsuitable for ISO 7637-2 Pulse 5a load dump | Select when board space is constrained and surge energy is ≤600 W |
| 1.5KE12A | Through-hole DO-201 package, same electrical specs but higher RθJA (100 °C/W vs. 75 °C/W) | Requires larger PCB area and manual assembly; less suitable for automated SMT lines | Select only for legacy through-hole designs or prototyping with breadboards |
Compared with SMBJ12AHE3/A and 1.5KE12A, the 1.5SMC12AHM3/I delivers 2.5× higher surge power in an SMT package with AEC-Q101 qualification and halogen-free construction-making it the preferred choice for volume automotive and industrial production where reliability, manufacturability, and regulatory compliance are mandatory.
Availability
1.5SMC12AHM3/I is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interfaces, MOSFET gate protection, and DC-DC converter input stages requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for 1.5SMC12AHM3/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, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The 1.5SMC Series was engineered for high-power transient suppression in harsh environments-targeting automotive, industrial, and telecom systems where robustness against lightning, ESD, and inductive switching is non-negotiable.
FAQ
What is the clamping voltage of the 1.5SMC12AHM3/I under maximum rated surge current?
The 1.5SMC12AHM3/I clamps to a maximum of 16.7 V when subjected to its rated peak pulse current of 89.8 A (10/1000 µs waveform). This value is measured under standardized test conditions with the device mounted on 8.0 mm × 8.0 mm copper pads and represents the upper limit of voltage seen by downstream circuitry during worst-case transient events. The 1.5SMC12AHM3/I maintains this clamping performance across its full operating temperature range.
Is the 1.5SMC12AHM3/I suitable for automotive applications?
Yes, the 1.5SMC12AHM3/I is AEC-Q101 qualified and specifically designated for automotive use via the HM3 suffix (halogen-free, RoHS-compliant, and AEC-Q101 qualified). It meets critical requirements for under-hood and chassis-mounted ECUs-including thermal stability up to +150 °C junction temperature, MSL Level 1 reflow compatibility, and validated performance against ISO 7637-2 load dump and ISO 16750-2 transients. The 1.5SMC12AHM3/I is widely deployed in body control modules and ADAS sensor interfaces.
What does the "HM3" suffix indicate in 1.5SMC12AHM3/I?
The "HM3" suffix in 1.5SMC12AHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade "M3" parts (RoHS/halogen-free but not AEC-Q101 qualified) and "E3" variants (RoHS-compliant but not halogen-free). The "I" indicates packaging in 13-inch tape-and-reel format (3500 units per reel), while "H" would denote 7-inch reels (850 units). The 1.5SMC12AHM3/I thus satisfies strict environmental and reliability standards for global automotive production.
How does the 1.5SMC12AHM3/I compare to bidirectional TVS diodes?
The 1.5SMC12AHM3/I is unidirectional and intended for DC line protection where polarity is fixed-such as 12 V power rails or gate drive signals. Unlike bidirectional types (e.g., 1.5SMC12CA), it conducts only in reverse avalanche and blocks forward current up to 200 A surge. This makes the 1.5SMC12AHM3/I ideal for asymmetric voltage domains, whereas bidirectional variants are used for AC lines or data buses like RS-485. The 1.5SMC12AHM3/I offers identical clamping and power ratings as its bidirectional counterparts but with polarity-sensitive placement.
What is the maximum reverse leakage current of the 1.5SMC12AHM3/I at its stand-off voltage?
At its rated stand-off voltage (VWM = 10.2 V), the 1.5SMC12AHM3/I exhibits a maximum reverse leakage current (ID) of 5.0 µA at 25 °C. This low leakage ensures minimal power loss in always-on systems such as automotive wake-up circuits or industrial sensor nodes. Leakage remains below 50 µA even at elevated temperatures up to +125 °C, preserving battery life and signal integrity in low-power applications using the 1.5SMC12AHM3/I.
1.5SMC12AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 89.8A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC12AHM3/I FAQ
1.How can I place an order for 1.5SMC12AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC12AHM3/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 1.5SMC12AHM3/I reliable?
The price and inventory of 1.5SMC12AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC12AHM3/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC12AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC12AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC12AHM3/I?
1.5SMC12AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC12AHM3/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 1.5SMC12AHM3/I?
For technical support, including 1.5SMC12AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC12AHM3/I requirements.
6.How does Aetrix verify that 1.5SMC12AHM3/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC12AHM3/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 1.5SMC12AHM3/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC12AHM3/I?
All 1.5SMC12AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC12AHM3/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 1.5SMC12AHM3/I part is unused and in its original packaging.
Return procedure for 1.5SMC12AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC12AHM3/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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