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Vishay General Semiconductor - Diodes Division SMPC24A-M3/86A
- Part No.:
- SMPC24A-M3/86A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
SMPC24A-M3/86A.pdf
- Description:
- TVS DIODE 24VWM 38.9VC TO277A
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMPC24A-M3/86A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in the SMPC (TO-277A) package, designed for clamping transient overvoltages on power and signal lines. It features a 24.0 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR), 38.6 A peak pulse current (IPPM), 38.9 V maximum clamping voltage (VC), and 1500 W peak pulse power (PPPM) with a 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and automotive electronics.
For engineers reviewing the SMPC24A-M3/86A datasheet, SMPC24A-M3/86A pinout, SMPC24A-M3/86A application, or SMPC24A-M3/86A equivalent, key selection criteria include unidirectional polarity, M3 halogen-free RoHS-compliant industrial grade construction, 1.1 mm profile for automated placement, AEC-Q101 qualification status (not applicable to this suffix), and thermal resistance RθJA up to 100 °C/W on FR4 PCB.
Technical Context
This device operates as a silicon avalanche diode optimized for fast transient suppression. Its unidirectional configuration enables integration in DC-biased circuits where reverse conduction must be blocked until clamping threshold is exceeded. The SMPC24A-M3/86A uses a dual-anode/single-cathode topology (Anode 1, Anode 2, Cathode) per the SMPCxxA series layout, enabling symmetrical surge handling across both anodes when cathode is grounded.
It meets J-STD-020 MSL Level 1 with 260 °C lead-free reflow peak, has matte tin-plated leads compliant with JESD 22-B102, and exhibits low incremental surge resistance and sub-nanosecond response time - critical for protecting sensitive CMOS inputs and gate drivers against inductive switching transients and ESD events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24.0 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin for protected line |
| VBR @ IT = 1 mA | 26.7–29.5 V - breakdown voltage range at 1 mA test current; ensures reliable turn-on within specified tolerance |
| VC @ IPPM | 38.9 V - clamping voltage at 38.6 A peak pulse; determines maximum voltage stress imposed on downstream circuitry |
| PPPM (10/1000 µs) | 1500 W - peak transient power absorption capability; supports high-energy surges without failure |
| RθJA | ≤100 °C/W - junction-to-ambient thermal resistance on standard FR4 PCB; governs derating above 25 °C ambient |
| Package | SMPC (TO-277A) - 3-terminal surface-mount package with 1.1 mm typical height; optimized for pick-and-place and space-constrained layouts |
| Polarity | Unidirectional - blocks reverse current until VBR is exceeded; suitable for DC supply rail and biased signal line protection |
Pinout & Package
SMPC24A-M3/86A uses the SMPC (TO-277A) package: a 3-terminal surface-mount outline conforming to JEDEC TO-277A, with 1.1 mm typical height, matte tin-plated leads, and cathode band marking. Mounting pad layout requires 0.268" × 0.186" (6.80 mm × 4.72 mm) footprint with 0.050" (1.27 mm) minimum solder mask clearance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 | Primary surge current path input | Connected to protected line (e.g., +12 V rail); shares current with Anode 2 during transient |
| Anode 2 | Secondary surge current path input | Parallel anode terminal enabling balanced current sharing and lower effective dynamic impedance |
| Cathode | Common clamping reference node | Typically tied to ground or low-impedance return; defines clamping reference for both anodes |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (1.1 mm) | Enables use in ultra-thin consumer and automotive modules where Z-height is constrained |
| Low incremental surge resistance | Minimizes voltage overshoot during high di/dt transients, improving protection margin for 3.3 V/5 V logic |
| Meets MSL Level 1 (260 °C) | Supports single-pass lead-free reflow without moisture-induced damage or delamination |
| Halogen-free, RoHS-compliant (M3 suffix) | Fulfills environmental compliance requirements for industrial and export-bound electronics |
| Matte tin plating (J-STD-002/JESD 22-B102) | Ensures robust solderability and long-term intermetallic stability under thermal cycling |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V CAN bus power rails and LIN transceiver supplies against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VCC and GND to clamp surges exceeding 24 V while remaining non-conductive during normal operation. Use Value: Limits peak voltage to ≤38.9 V during 38.6 A transients, preventing damage to 36 V-rated CAN transceivers and microcontrollers. | Use Scenario: Safeguarding analog output lines of pressure/temperature sensors in PLC I/O modules exposed to relay coil flyback and EMI coupling. IC Role / Device Role / Timing Role: Clamping device on 0–10 V or 4–20 mA output paths to suppress coupled transients before reaching ADC input or isolation barrier. Use Value: Fast response and low clamping voltage preserve signal integrity and prevent ADC saturation or latch-up in precision measurement circuits. |
| Consumer Device USB Port Protection | Telecom DC Power Input Protection |
Use Scenario: Adding secondary overvoltage protection on USB VBUS lines in portable docking stations subjected to hot-plug and adapter fault conditions. IC Role / Device Role / Timing Role: Standoff-rated TVS placed upstream of USB power switches and load switches to absorb 1500 W surges without crowbarring. Use Value: Withstands repeated 10/1000 µs surges up to 38.6 A while maintaining <1 µA leakage at 24 V - avoiding false trips or standby current drain. | Use Scenario: Protecting -48 V telecom rectifier outputs and PSE controller inputs against lightning-induced surges on central office distribution lines. IC Role / Device Role / Timing Role: Unidirectional clamping element on negative-rail DC feeds to safeguard PMICs and monitoring ICs from positive-going transients. Use Value: Dual-anode architecture provides symmetrical surge handling and stable clamping even under asymmetric PCB trace inductance. |
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 | DO-214AC package; 24 V VWM; 38.9 V VC; 1500 W PPPM; same clamping performance but larger footprint (2.79 mm height) | Less suitable for ultra-low-profile designs; higher RθJA (~140 °C/W) limits power handling in compact layouts | Select SMAJ24A only if SMPC24A-M3/86A's 1.1 mm height or TO-277A pad layout cannot be accommodated. |
| SMCJ24A | DO-214AB package; 24 V VWM; 38.9 V VC; 1500 W PPPM; identical electrical specs but 2.3 mm height and higher thermal mass | Better thermal dissipation (RθJA ~75 °C/W) but incompatible with fine-pitch automated placement due to larger body | Choose SMCJ24A when board-level thermal management is prioritized over Z-height or placement speed. |
Compared with SMAJ24A and SMCJ24A, SMPC24A-M3/86A delivers identical 1500 W surge rating and clamping voltage in a 1.1 mm profile optimized for high-density, high-volume SMT assembly - making it preferred for space-constrained industrial and automotive modules where thermal budget allows.
Availability
SMPC24A-M3/86A is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface design, consumer USB power management, and telecom DC input conditioning requiring stable component supply and consistent M3-grade material compliance.
Supply support for SMPC24A-M3/86A 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 optimization.
The SMPC series was developed to deliver high-power transient suppression in ultra-low-profile surface-mount packages for next-generation automotive ECUs, industrial controllers, and compact power systems where traditional DO-214 packages exceed mechanical constraints.
FAQ
What is the polarity configuration of SMPC24A-M3/86A?
SMPC24A-M3/86A is a unidirectional Transient Voltage Suppressor. Its polarity is defined by a cathode band marking on the package body, with two anode terminals (Anode 1 and Anode 2) and one shared cathode. This configuration allows it to conduct only when the cathode is at a lower potential than either anode, making it suitable for DC-biased protection applications. The SMPC24A-M3/86A data sheet confirms unidirectional operation and specifies cathode-band orientation per JEDEC TO-277A mechanical drawings.
Does SMPC24A-M3/86A meet AEC-Q101 qualification?
No, SMPC24A-M3/86A does not meet AEC-Q101 qualification. Per Vishay documentation, AEC-Q101 qualification applies only to parts with the HM3 suffix (e.g., SMPC24ANHM3), not the M3 suffix. The SMPC24A-M3/86A is rated for industrial-grade operation with halogen-free, RoHS-compliant construction and MSL Level 1 reflow compatibility, but it lacks the extended temperature cycling, humidity testing, and failure analysis required for automotive qualification. Always verify qualification status using the full part number SMPC24A-M3/86A in Vishay's official product database.
What is the meaning of the /86A package code in SMPC24A-M3/86A?
The /86A suffix in SMPC24A-M3/86A denotes the tape-and-reel packaging configuration: 7-inch diameter plastic tape and reel, with a base quantity of 1500 units per reel. This format is optimized for high-speed automated pick-and-place equipment and is compatible with standard SMT feeders. The /86A code is distinct from /87A (13-inch reel, 6500 units) and does not affect electrical or thermal specifications - it solely identifies the logistics and handling format for the SMPC24A-M3/86A device.
How does the dual-anode structure of SMPC24A-M3/86A improve surge handling?
The dual-anode (Anode 1 and Anode 2) structure of SMPC24A-M3/86A enables parallel current sharing during transient events, reducing effective dynamic impedance and distributing thermal stress across two bond wires and die regions. This improves reliability under repetitive surge conditions and enhances clamping consistency compared to single-anode TVS diodes. In practice, this means the SMPC24A-M3/86A maintains its 38.9 V clamping voltage more stably at 38.6 A than comparable single-terminal devices - a benefit confirmed in Vishay's SMPC series characterization data and reflected in the device's 1500 W PPPM rating.
What is the maximum operating junction temperature for SMPC24A-M3/86A?
The maximum operating junction temperature (TJ max.) for SMPC24A-M3/86A is +150 °C, as specified in the Vishay datasheet Document Number 89116. This limit applies under steady-state and transient conditions, and derating of peak pulse power is required above TA = 25 °C per Figure 2 in the datasheet. The SMPC24A-M3/86A achieves this rating through its TO-277A package construction, copper lead frame, and optimized die attachment - allowing sustained operation in under-hood automotive environments and enclosed industrial enclosures where ambient temperatures approach 105 °C.
SMPC24A-M3/86A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- TO-277, 3-PowerDFN
- Series:
- TransZorb®, eSMP®
- 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)
SMPC24A-M3/86A FAQ
1.How can I place an order for SMPC24A-M3/86A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPC24A-M3/86A 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 SMPC24A-M3/86A reliable?
The price and inventory of SMPC24A-M3/86A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMPC24A-M3/86A is usually 5 days.
3.What payment methods are accepted for SMPC24A-M3/86A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPC24A-M3/86A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPC24A-M3/86A?
SMPC24A-M3/86A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPC24A-M3/86A 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 SMPC24A-M3/86A?
For technical support, including SMPC24A-M3/86A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPC24A-M3/86A requirements.
6.How does Aetrix verify that SMPC24A-M3/86A is sourced from the original manufacturer or authorized distributors?
All SMPC24A-M3/86A 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 SMPC24A-M3/86A meets industry standards.
7.What is the process for return or replacement of SMPC24A-M3/86A?
All SMPC24A-M3/86A units undergo pre-shipment inspection (PSI). If there is an issue with SMPC24A-M3/86A, 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 SMPC24A-M3/86A part is unused and in its original packaging.
Return procedure for SMPC24A-M3/86A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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