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Vishay General Semiconductor - Diodes Division 1.5SMC27AHM3_A/H
- Part No.:
- 1.5SMC27AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC27AHM3_A/H.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,346
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Product details
Overview
1.5SMC27AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 27 V breakdown voltage (VBR = 25.7–28.4 V at IT = 1.0 mA), 23.1 V stand-off voltage (VWM), and clamps transients to ≤37.5 V at 40.0 A peak pulse current (10/1000 μs), delivering 1500 W peak pulse power. It is used in automotive ECUs, industrial sensor interfaces, and DC power rails requiring AEC-Q101-qualified surge immunity.
For engineers reviewing the 1.5SMC27AHM3_A/H datasheet, 1.5SMC27AHM3_A/H pinout, 1.5SMC27AHM3_A/H application, or 1.5SMC27AHM3_A/H equivalent, this page provides verified package mapping (SMC/DO-214AB), polarity marking (cathode band), clamping performance under standardized surge waveforms, and AEC-Q101 qualification status - all critical for automotive-grade ESD and lightning transient design validation.
Technical Context
The 1.5SMC27AHM3_A/H operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response (<1 ns) to voltage transients and low incremental surge resistance. Its thermal resistance (RθJL = 15 °C/W) supports reliable energy dissipation when mounted on 8.0 mm × 8.0 mm copper pads, and it meets MSL Level 1 per J-STD-020 with peak reflow tolerance up to 260 °C.
Rated for -65 °C to +150 °C operating junction temperature, it delivers 1500 W peak pulse power (10/1000 μs waveform, 0.01% duty cycle) and withstands 200 A non-repetitive forward surge (8.3 ms half-sine). The device is halogen-free, RoHS-compliant, and qualified to AEC-Q101 - confirming suitability for automotive powertrain and body electronics where long-term reliability under thermal cycling and surge stress is mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at IT = 1.0 mA - defines precise avalanche onset threshold for predictable clamping initiation |
| VWM | 23.1 V - maximum continuous reverse working voltage before leakage exceeds 1.0 μA, ensuring no false triggering in 24 V systems |
| VC @ IPPM | ≤37.5 V at 40.0 A - clamping voltage during full-rated 1500 W transient, limiting downstream IC stress to safe levels |
| PPPM | 1500 W - peak pulse power handling capability with 10/1000 μs waveform, validated for lightning-induced surges per IEC 61000-4-5 |
| IFSM | 200 A - single half-sine surge rating (8.3 ms), supporting high-energy inductive switch-off events in motor drivers |
| TJ max | +150 °C - maximum junction temperature, enabling operation in under-hood automotive environments without derating |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and cathode band polarity marking |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case meeting UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards; cathode indicated by a visible band on the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to system ground or low-side return path; enables unidirectional clamping from line-to-ground |
| Cathode | Current exit terminal in forward bias; marked with band | Connected to protected line (e.g., 24 V rail); conducts surge current to ground when VLINE exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS sensors, and infotainment power supplies |
| 1500 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-to-ground) without degradation |
| Glass-passivated junction | Ensures stable VBR and low leakage (<1.0 μA at VWM) across temperature and lifetime |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets automotive environmental compliance requirements (e.g., ELV, IMDS) and JEDEC JESD201 Class 2 whisker resistance |
| MSL Level 1 moisture sensitivity | Allows standard SMT reflow without baking; peak temperature rating of 260 °C supports lead-free assembly |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply rails in engine control units (ECUs) against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and DC-DC converter input stage. Use Value: Clamps transients to ≤37.5 V, preventing damage to downstream LDOs and microcontrollers while maintaining AEC-Q101 compliance. |
Use Scenario: Safeguarding analog inputs of pressure/temperature sensors in PLC modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Line-to-ground TVS on 4–20 mA or 0–10 V signal paths adjacent to connector entry points. Use Value: Sub-1 ns response limits voltage overshoot during fast ESD events (IEC 61000-4-2 ±8 kV contact), preserving ADC accuracy and sensor integrity. |
| DC Motor Drive Surge Suppression | Telecom Power Feeding Protection |
Use Scenario: Suppressing inductive kickback from brushed DC motors in automotive seat/mirror actuators. IC Role / Device Role / Timing Role: TVS connected across motor terminals or H-bridge low-side FET drains. Use Value: Absorbs 200 A surge (8.3 ms) without failure, eliminating need for external snubbers and reducing board space. |
Use Scenario: Protecting PoE-powered devices (e.g., IP cameras) from induced surges on 48 V DC feeding lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on midspan injector output or PD input side. Use Value: 23.1 V VWM ensures compatibility with IEEE 802.3af/at hold-up voltage margins while clamping to 37.5 V during lightning surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27A-E3/52 | Same VBR range (25.7–28.4 V) but SMB package (smaller footprint, lower PPPM = 600 W) | Limited to lower-energy transients (e.g., ESD-only); unsuitable for IEC 61000-4-5 Level 3+ or load dump | Select only if board space is constrained and surge threat level is limited to IEC 61000-4-2/4-4. |
| 1.5KE27A | Through-hole DO-201 package; identical electrical specs but higher RθJA (100 °C/W vs. 75 °C/W) and no AEC-Q101 qualification | Not approved for automotive use; requires manual insertion or wave soldering; less suitable for automated SMT lines | Choose for cost-sensitive industrial prototypes where AEC-Q101 is not required and PCB real estate allows through-hole placement. |
Compared with SMBJ27A-E3/52 and 1.5KE27A, the 1.5SMC27AHM3_A/H uniquely combines AEC-Q101 qualification, 1500 W surge capacity in an SMT-optimized SMC package, and halogen-free compliance - making it the only option among the three qualified for production automotive power systems requiring zero rework risk and full regulatory traceability.
Availability
1.5SMC27AHM3_A/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, DC motor drive circuits, and telecom power feeding applications requiring stable component supply, long-lifecycle support, and AEC-Q101 traceability.
Supply support for 1.5SMC27AHM3_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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The 1.5SMC Series was developed specifically for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where compact size, high surge robustness, and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC27AHM3_A/H at its rated peak pulse current?
The 1.5SMC27AHM3_A/H has a maximum clamping voltage (VC) of 37.5 V at 40.0 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay Document 88303 and ensures downstream components see no more than 37.5 V during full-rated surge events. The 1.5SMC27AHM3_A/H maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C).
Is the 1.5SMC27AHM3_A/H qualified for automotive applications?
Yes, the 1.5SMC27AHM3_A/H is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's 1.5SMC Series datasheet (Document Number 88303, Revision 09-Mar-2026). It is certified for use in automotive powertrain, chassis, and body electronics, including engine control units and ADAS sensor modules. The 1.5SMC27AHM3_A/H undergoes stress testing per AEC-Q101 requirements including HTGB, TCT, and surge endurance.
What does the "HM3" suffix indicate in 1.5SMC27AHM3_A/H?
The "HM3" suffix in 1.5SMC27AHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes the part from commercial-grade variants (e.g., "E3" or "M3") and confirms compliance with automotive environmental standards including JEDEC JESD201 Class 2 whisker resistance and UL 94 V-0 flammability. The "_A/H" further specifies packaging: 7-inch tape-and-reel (H) with revision code A.
How is polarity identified on the 1.5SMC27AHM3_A/H package?
The 1.5SMC27AHM3_A/H uses a visible cathode band on the SMC (DO-214AB) package body to indicate polarity. The banded end is the cathode and must be connected to the line being protected (e.g., 24 V rail), while the unbanded end is the anode and connects to ground. This unidirectional configuration ensures proper conduction during positive transients. No marking is present on bidirectional variants - but the 1.5SMC27AHM3_A/H is explicitly unidirectional.
What is the maximum operating temperature for the 1.5SMC27AHM3_A/H?
The 1.5SMC27AHM3_A/H has a maximum junction temperature (TJ) of +150 °C and an operating junction/storage temperature range of -65 °C to +150 °C. This rating is validated per Vishay's thermal characterization data and supports deployment in under-hood automotive locations and industrial enclosures without forced cooling. Derating begins above 25 °C ambient per Figure 2 in Document 88303, and the 1.5SMC27AHM3_A/H retains full 1500 W pulse capability up to TJ = 125 °C.
1.5SMC27AHM3_A/H 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 40A
- 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)
1.5SMC27AHM3_A/H FAQ
1.How can I place an order for 1.5SMC27AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC27AHM3_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 1.5SMC27AHM3_A/H reliable?
The price and inventory of 1.5SMC27AHM3_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 1.5SMC27AHM3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC27AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC27AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC27AHM3_A/H?
1.5SMC27AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC27AHM3_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 1.5SMC27AHM3_A/H?
For technical support, including 1.5SMC27AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC27AHM3_A/H requirements.
6.How does Aetrix verify that 1.5SMC27AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC27AHM3_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 1.5SMC27AHM3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC27AHM3_A/H?
All 1.5SMC27AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC27AHM3_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 1.5SMC27AHM3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC27AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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