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Vishay General Semiconductor - Diodes Division SMPC26ANHM3/I
- Part No.:
- SMPC26ANHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
SMPC26ANHM3/I.pdf
- Description:
- TVS DIODE 26VWM 42.1VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:9,862
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Product details
Overview
SMPC26ANHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in the SMPC (TO-277A) package, designed for high-energy surge protection of sensitive electronics. It features a 26.0 V stand-off voltage (VWM), 28.9–31.9 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 μs), 35.6 A peak pulse current (IPPM), and clamps to ≤42.1 V at rated surge current.
For engineers reviewing the SMPC26ANHM3/I datasheet, SMPC26ANHM3/I pinout, SMPC26ANHM3/I application, or SMPC26ANHM3/I equivalent, this device is selected for automotive-grade transient suppression on power rails and signal lines where AEC-Q101 qualification, low-profile mounting (1.1 mm height), and robust clamping under repetitive surges are required.
Technical Context
This TVS diode operates in avalanche mode during overvoltage events, delivering fast response (<1 ns) and low incremental surge resistance to limit transient energy delivered to downstream components. Its unidirectional polarity enables integration into DC-biased circuits such as automotive power supplies and sensor interfaces without reverse conduction concerns.
The SMPC26ANHM3/I uses a dual-anode/single-cathode configuration (SMPCxxAN variant) with cathode denoted by a band, optimized for heat dissipation when mounted with cathode on heatsink - achieving RθJM of 2.5 °C/W typical. It meets JESD201 Class 2 whisker resistance and MSL Level 1 (260 °C reflow).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26.0 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system rail margin. |
| VBR (min/max) | 28.9 V / 31.9 V at 1 mA - Confirmed breakdown range ensures reliable turn-on above nominal rail; tight tolerance supports precise protection thresholds. |
| PPPM | 1500 W (10/1000 μs) - Sustains high-energy transients per ISO 7637-2 Pulse 5a without degradation; critical for automotive load-dump immunity. |
| VC at IPPM | ≤42.1 V - Clamping voltage under 35.6 A surge; defines maximum stress imposed on protected ICs or MOSFETs. |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and industrial enclosures with elevated ambient temperatures. |
| Package | SMPC (TO-277A) - Surface-mount, low-profile (1.1 mm height), dual-anode/single-cathode layout compatible with automated placement and high-density PCBs. |
| AEC-Q101 | Qualified - Validated for automotive applications including engine control units, body electronics, and ADAS sensors per stress test requirements. |
Pinout & Package
SMPC26ANHM3/I uses the SMPC (TO-277A) package: a 3-terminal surface-mount case with 1.1 mm typical height, matte tin-plated leads, and cathode indicated by a band. The device has a dual-anode/single-cathode configuration optimized for thermal performance when cathode is soldered to a heatsink pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 | Primary anode connection | Connected to system ground or return path; forms one half of parallel anode structure for current sharing and thermal distribution. |
| Anode 2 | Secondary anode connection | Electrically tied to Anode 1 internally; provides redundant bonding and lower effective thermal resistance to PCB copper. |
| Cathode (banded end) | Transient current sink | Connected to protected line (e.g., 24 V supply); carries full surge current during clamping; optimal thermal path when mounted on heatsink. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional operation | Enables use on DC-biased lines (e.g., automotive 12 V/24 V rails) without reverse leakage issues during normal operation. |
| AEC-Q101 qualification | Validated for automotive reliability including temperature cycling, humidity bias HAST, and mechanical shock - required for ECU and ADAS modules. |
| Low-profile SMPC package | 1.1 mm height allows integration into space-constrained modules (e.g., motor drivers, camera ECUs) without interfering with nearby components or shields. |
| 1500 W peak pulse rating | Withstands ISO 7637-2 Pulse 5a (load dump) up to 100 V/350 ms without failure - protects against alternator-induced surges in vehicles. |
| Matte tin terminations | Solderable per J-STD-002 and JESD22-B102; supports lead-free reflow (260 °C peak) and eliminates whisker risk per JESD201 Class 2. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs in engine control units (ECUs) against load-dump transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between battery rail and DC-DC converter input. Use Value: Limits clamped voltage to ≤42.1 V, preventing damage to downstream regulators and microcontrollers during 1500 W surges. |
Use Scenario: Shielding analog output lines of pressure or temperature sensors in factory automation systems from ESD and switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS connected between sensor signal line and ground, upstream of ADC input. Use Value: Responds in <1 ns to clamp fast transients while maintaining ≤1.0 μA leakage at 26 V, preserving signal integrity. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding 48 V PoE-powered equipment inputs against lightning-induced surges and hot-swap transients. IC Role / Device Role / Timing Role: Primary surge clamp on DC input before isolation and regulation stages. Use Value: Delivers 1500 W peak power handling with 2.5 °C/W junction-to-mount thermal resistance, enabling compact heatsink design. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Mounted across motor terminals to absorb back-EMF energy during commutation. Use Value: Withstands repetitive 35.6 A pulses at 10/1000 μs waveform without parameter drift, ensuring long-term reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ26A-M3/86A | Same VWM (26 V) and PPPM (400 W), but lower peak power (400 W vs. 1500 W); SMA package (higher RθJA = 150 °C/W). | Not AEC-Q101 qualified; suitable for industrial/commercial only; limited to lower-energy transients. | Select SMAJ26A-M3/86A only if surge energy is ≤400 W and automotive qualification is not required. |
| SMCJ26A-HM3 | Same VWM (26 V) and higher PPPM (3000 W); larger SMC package (2.6 mm height); AEC-Q101 qualified. | Requires more board area and higher profile; better suited for extreme surge environments (e.g., heavy-duty vehicle systems). | Choose SMCJ26A-HM3 when >1500 W surge immunity is needed and PCB height constraints allow 2.6 mm profile. |
Compared with SMAJ26A-M3/86A and SMCJ26A-HM3, SMPC26ANHM3/I delivers optimal balance of automotive qualification, 1500 W surge capability, and ultra-low 1.1 mm profile - making it preferred for space-limited AEC-Q101 designs where 1500 W is sufficient.
Availability
SMPC26ANHM3/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power inputs, and consumer appliance motor drives requiring stable component supply with AEC-Q101 assurance and consistent surge performance.
Supply support for SMPC26ANHM3/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, efficiency, and application-specific validation.
The SMPC series was developed for high-power, low-profile transient protection in automotive and industrial systems - prioritizing AEC-Q101 compliance, thermal performance, and automated assembly compatibility.
FAQ
What is the clamping voltage of SMPC26ANHM3/I at its rated peak pulse current?
The SMPC26ANHM3/I clamps to a maximum of 42.1 V when subjected to its rated peak pulse current of 35.6 A (10/1000 μs waveform). This value is measured with cathode mounted on heatsink and defines the upper voltage limit imposed on protected circuitry during surge events. The clamping performance is guaranteed across the full operating temperature range of -55 °C to +150 °C.
Is SMPC26ANHM3/I qualified for automotive applications?
Yes, SMPC26ANHM3/I is AEC-Q101 qualified, as confirmed by Vishay's documentation for the SMPC22AN through SMPC85AN family. This qualification covers stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing (uHAST), making SMPC26ANHM3/I suitable for engine control units, body control modules, and ADAS sensor systems.
What does the "HM3/I" suffix indicate in SMPC26ANHM3/I?
The "HM3" suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification; "I" specifies packaging in 13-inch diameter plastic tape and reel, with a base quantity of 6500 units. This differs from "H" (7-inch reel, 1500 units) and confirms full compliance with automotive supply chain traceability and environmental requirements.
How does the dual-anode configuration of SMPC26ANHM3/I improve thermal performance?
The dual-anode layout in SMPC26ANHM3/I provides two parallel internal bond wires and solder connections to the PCB, reducing effective thermal resistance from junction to mount (RθJM = 2.5 °C/W typical). When the cathode is soldered to a thermal pad, this configuration enhances heat spreading across the board, allowing sustained operation at 1.25 W steady-state power dissipation even at +125 °C ambient.
Can SMPC26ANHM3/I be used in bidirectional signal line protection?
No - SMPC26ANHM3/I is unidirectional and intended only for DC-biased lines such as power rails or single-ended analog outputs. For bidirectional protection (e.g., USB data lines or RS-485), a dedicated bidirectional TVS like SMBJ26CA-HM3 would be required. Using SMPC26ANHM3/I on AC or floating signals risks reverse conduction and improper clamping behavior.
SMPC26ANHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- TO-277, 3-PowerDFN
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 42.1V
- Current - Peak Pulse (10/1000µs):
- 35.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-277A (SMPC)
SMPC26ANHM3/I FAQ
1.How can I place an order for SMPC26ANHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPC26ANHM3/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 SMPC26ANHM3/I reliable?
The price and inventory of SMPC26ANHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMPC26ANHM3/I is usually 5 days.
3.What payment methods are accepted for SMPC26ANHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPC26ANHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPC26ANHM3/I?
SMPC26ANHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPC26ANHM3/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 SMPC26ANHM3/I?
For technical support, including SMPC26ANHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPC26ANHM3/I requirements.
6.How does Aetrix verify that SMPC26ANHM3/I is sourced from the original manufacturer or authorized distributors?
All SMPC26ANHM3/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 SMPC26ANHM3/I meets industry standards.
7.What is the process for return or replacement of SMPC26ANHM3/I?
All SMPC26ANHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMPC26ANHM3/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 SMPC26ANHM3/I part is unused and in its original packaging.
Return procedure for SMPC26ANHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMPC26ANHM3/I Tags
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