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Vishay General Semiconductor - Diodes Division SMPC24AN-M3/I
- Part No.:
- SMPC24AN-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
SMPC24AN-M3/I.pdf
- Description:
- TVS DIODE 24VWM 38.9VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:6,122
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Product details
Overview
SMPC24AN-M3/I from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor in the SMPC (TO-277A) package, rated for 24.0 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR), and 1500 W peak pulse power (PPPM) with 38.6 A peak pulse current (IPPM) and 38.9 V clamping voltage (VC). It protects MOSFETs and signal lines in automotive sensor units against inductive switching transients.
For engineers reviewing the SMPC24AN-M3/I datasheet, SMPC24AN-M3/I pinout, SMPC24AN-M3/I application, or SMPC24AN-M3/I equivalent, this page delivers verified electrical parameters, thermal derating behavior, AEC-Q101 qualification status, JEDEC-compliant mounting footprint, and real-world clamping performance under 10/1000 µs surge conditions.
Technical Context
This device operates as a unidirectional avalanche diode, leveraging silicon p-n junction physics to clamp transient overvoltages above its breakdown threshold while maintaining low leakage (<1.0 µA at VWM) below it. Its 2.5 °C/W typical junction-to-mount thermal resistance enables effective heat transfer when cathode is soldered to a heatsink pad.
The SMPC24AN-M3/I is specifically qualified to AEC-Q101 (automotive grade), unlike non-HM3 suffix variants, and features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Its M3 suffix denotes halogen-free, RoHS-compliant industrial-grade construction with MSL Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24.0 V - Maximum continuous reverse operating voltage before conduction begins; defines safe signal line bias margin. |
| VBR min/max | 26.7 V / 29.5 V at 1.0 mA - Confirmed avalanche onset range; ensures predictable turn-on across temperature and lot variation. |
| VC @ IPPM | 38.9 V - Clamped voltage during 38.6 A, 10/1000 µs surge; determines maximum stress imposed on protected downstream IC. |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 µs waveform; validates robustness against ISO 7637-2 Pulse 1/2a/5a transients. |
| RθJM | 2.5 °C/W typical - Junction-to-mount thermal resistance; enables accurate PCB copper area sizing for thermal management when cathode is heatsinked. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive environments with proper layout. |
| MSL Level | Level 1 (per J-STD-020) - No floor life limitation; allows indefinite storage and standard reflow without baking. |
Pinout & Package
Package: SMPC (TO-277A), 3-terminal surface-mount case with cathode band marking; 1.1 mm typical height; UL 94 V-0 molding compound; 0.10 g unit weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 & Anode 2 | Common anode terminals | Electrically tied internally; must be connected to same potential (e.g., ground or low-side return path) for specified electrical characteristics. |
| Cathode | Transient clamping output terminal | Connected to protected line (e.g., sensor supply or signal); clamps to ≤38.9 V during surge; requires heatsink pad for thermal reliability. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional clamping | Enables protection of DC-biased lines (e.g., 24 V sensor supplies) without forward-conduction interference during normal operation. |
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and ADAS sensor interfaces per stress test requirements. |
| Low profile (1.1 mm) | Supports high-density PCB layouts in space-constrained modules such as automotive ECUs and industrial I/O cards. |
| Halogen-free & RoHS | Meets global environmental compliance mandates (EU RoHS Directive 2011/65/EU, JEDEC JS709C) without compromising surge robustness. |
| Matte tin plating | Ensures reliable solderability per J-STD-002 and whisker resistance per JESD 201 Class 2 for long-term field reliability. |
Applications
| Automotive Sensor Protection | Industrial PLC Input Protection |
|---|---|
|
Use Scenario: Protecting 24 V CAN/LIN bus sensor nodes (e.g., pressure, temperature) from load dump and inductive kickback in vehicle chassis wiring. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between sensor VCC line and ground, clamping surges before they reach ASIC or microcontroller input pins. Use Value: Limits transient stress to ≤38.9 V at 38.6 A, preventing latch-up or gate oxide damage in automotive-grade MCUs operating at 24 V nominal. |
Use Scenario: Safeguarding digital input channels of programmable logic controllers against ESD and relay coil flyback in factory automation cabinets. IC Role / Device Role / Timing Role: Unidirectional TVS mounted at connector entry point, shunting surge energy away from optocoupler or Schmitt trigger input stages. Use Value: Withstands 1500 W pulses and maintains <1.0 µA leakage at 24 V, ensuring no false triggering during steady-state operation. |
| Telecom Power Rail Protection | Consumer Appliance Motor Control |
|
Use Scenario: Securing 24–48 V DC power inputs of telecom remote radio units exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary clamping device on main DC feed, coordinated with upstream MOVs and downstream ceramic capacitors for multi-stage protection. Use Value: Delivers 38.9 V clamping at full 1500 W rating, enabling compact design without sacrificing IEC 61000-4-5 Level 4 immunity compliance. |
Use Scenario: Shielding microcontroller GPIOs and gate drivers in smart home appliances (e.g., washing machine motor inverters) from brush-commutator noise. IC Role / Device Role / Timing Role: Localized TVS on motor driver enable/sense lines, placed adjacent to connectors to minimize inductance in surge path. Use Value: Fast response time and low incremental surge resistance ensure sub-100 ns clamping, suppressing nanosecond-scale commutation spikes before they propagate. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-M3/86A | DO-214AC (SMA) package; 24 V VWM; 1500 W PPPM; but RθJA = 110 °C/W vs. SMPC24AN-M3/I's 85 °C/W; no AEC-Q101 qualification. | Limited to industrial/commercial use; unsuitable for automotive under-hood placement due to higher thermal resistance and lack of AEC-Q101. | Select when cost-sensitive commercial designs require legacy SMA footprint compatibility and thermal demands are moderate. |
| TPSMD24-M3/86A | TO-277A package identical to SMPC; 24 V VWM; 1500 W PPPM; but VBR = 26.7–30.8 V; VC = 38.9 V; AEC-Q101 qualified; same M3 suffix. | Functionally identical clamping performance and qualification; differs only in manufacturer branding and minor VBR tolerance spread (±5% vs. ±4.5%). | Consider for dual-sourcing where identical mechanical fit, thermal behavior, and automotive qualification are required. |
Compared with SMAJ24A-M3/86A, SMPC24AN-M3/I offers superior thermal performance and automotive qualification; compared with TPSMD24-M3/86A, it provides tighter VBR tolerance and identical TO-277A implementation-making it optimal for space-constrained, thermally demanding automotive sensor nodes.
Availability
SMPC24AN-M3/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC input hardening, and telecom DC power rail safeguarding requiring stable component supply, AEC-Q101 compliance, and high-power transient resilience.
Supply support for SMPC24AN-M3/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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade validation.
The SMPC series targets high-reliability transient suppression in automotive and industrial systems, designed to replace older SMA/SMB packages with lower profile, improved thermal coupling, and AEC-Q101 compliance out-of-the-box.
FAQ
What is the clamping voltage of SMPC24AN-M3/I at its rated peak pulse current?
The SMPC24AN-M3/I has a maximum clamping voltage (VC) of 38.9 V when subjected to its rated 38.6 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured with the cathode mounted to a heatsink, per JEDEC 51-14 TDIM methodology, and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SMPC24AN-M3/I qualified for automotive applications?
Yes, SMPC24AN-M3/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code structure ('AN' suffix + 'HM3' base designation). This qualification covers stress tests including HTGB, HTRB, AC/DC life test, and temperature cycling-validating suitability for automotive powertrain, chassis, and ADAS sensor modules.
How does the SMPC (TO-277A) package of SMPC24AN-M3/I improve thermal performance over SMA packages?
The SMPC (TO-277A) package of SMPC24AN-M3/I achieves a typical junction-to-mount thermal resistance (RθJM) of 2.5 °C/W-significantly lower than SMA's ~15–20 °C/W-due to its dual-anode/cathode tab geometry and optimized copper slug design. This allows direct thermal coupling to PCB copper, enabling higher sustained surge duty cycles in confined spaces.
What does the 'I' suffix in SMPC24AN-M3/I indicate?
The 'I' suffix in SMPC24AN-M3/I specifies the preferred packaging configuration: 13-inch diameter plastic tape and reel, with a base quantity of 6500 units per reel. This format supports high-volume automated SMT assembly and aligns with IPC-7351B land pattern recommendations for TO-277A.
Can SMPC24AN-M3/I be used in bidirectional configurations?
No, SMPC24AN-M3/I is strictly unidirectional, as stated in Vishay's datasheet Feature list and Electrical Characteristics table. Its internal structure connects both anodes together with a single cathode; attempting bidirectional use would result in forward conduction on one polarity and no protection on the other-use SMAJ24CA or similar for bidirectional needs.
SMPC24AN-M3/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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 38.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-277A (SMPC)
SMPC24AN-M3/I FAQ
1.How can I place an order for SMPC24AN-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPC24AN-M3/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 SMPC24AN-M3/I reliable?
The price and inventory of SMPC24AN-M3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMPC24AN-M3/I is usually 5 days.
3.What payment methods are accepted for SMPC24AN-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPC24AN-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPC24AN-M3/I?
SMPC24AN-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPC24AN-M3/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 SMPC24AN-M3/I?
For technical support, including SMPC24AN-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPC24AN-M3/I requirements.
6.How does Aetrix verify that SMPC24AN-M3/I is sourced from the original manufacturer or authorized distributors?
All SMPC24AN-M3/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 SMPC24AN-M3/I meets industry standards.
7.What is the process for return or replacement of SMPC24AN-M3/I?
All SMPC24AN-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMPC24AN-M3/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 SMPC24AN-M3/I part is unused and in its original packaging.
Return procedure for SMPC24AN-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMPC24AN-M3/I Tags
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