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Vishay General Semiconductor - Diodes Division SMPC22A-M3/86A
- Part No.:
- SMPC22A-M3/86A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
SMPC22A-M3/86A.pdf
- Description:
- TVS DIODE 22VWM 35.5VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:4,476
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Product details
Overview
SMPC22A-M3/86A from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor in SMPC (TO-277A) package, with 22.0 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR), and 1500 W peak pulse power (PPPM). It clamps transients to ≤35.5 V at 42.3 A, and is rated for -55 °C to +150 °C operation - deployed for protecting MOSFETs and sensor signal lines in automotive and industrial control systems.
For engineers reviewing the SMPC22A-M3/86A datasheet, SMPC22A-M3/86A pinout, SMPC22A-M3/86A application, or SMPC22A-M3/86A equivalent, key selection criteria include unidirectional polarity, 1.1 mm profile suitability for automated placement, AEC-Q101 qualification status (not applicable to this M3 suffix variant), thermal resistance (RθJA ≤ 100 °C/W), and FR4 PCB derating behavior above 25 °C ambient.
Technical Context
This device operates as a silicon avalanche diode designed to clamp transient overvoltages using controlled reverse-biased breakdown. Its low incremental surge resistance and fast response time enable effective suppression of inductive-switching spikes and ESD events on DC power rails and low-voltage signal paths.
The SMPC22A-M3/86A uses a dual-anode, single-cathode configuration (Anode 1 / Anode 2 / Cathode) in the SMPC (TO-277A) package, requiring both anodes to be connected identically per datasheet note. Clamping performance is specified under 10/1000 μs waveform conditions, with thermal derating applied above TA = 25 °C per Figure 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22.0 V - maximum continuous reverse voltage before leakage exceeds 1.0 μA; defines operating rail margin for 24 V systems |
| VBR min/max | 24.4 V / 26.9 V at 1.0 mA - ensures reliable turn-on within 10% tolerance across production lot |
| VC at IPPM | ≤35.5 V at 42.3 A - limits downstream IC stress during 10/1000 μs surge events |
| PPPM | 1500 W - peak transient energy handling capability under standardized test waveform |
| RθJA | ≤100 °C/W - junction-to-ambient thermal resistance on FR4 PCB with 2 oz copper, dictates heatsinking needs |
| TJ max | +150 °C - maximum allowable junction temperature; enables use in under-hood automotive environments |
Pinout & Package
Package: SMPC (TO-277A), surface-mount, halogen-free, RoHS-compliant, 1.1 mm typical height, matte tin-plated leads, MSL level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 | Primary current entry path during clamping | Must be connected identically to Anode 2; floating or mismatched connection degrades clamping performance |
| Anode 2 | Secondary current entry path during clamping | Electrically parallel to Anode 1; both anodes share surge current equally when properly routed |
| Cathode | Common clamping node and polarity reference | Banded end; connects to protected line (e.g., 24 V rail or sensor output); defines unidirectional conduction direction |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (1.1 mm) | Enables placement beneath low-clearance shields or in space-constrained modules without mechanical interference |
| Low incremental surge resistance | Minimizes voltage overshoot during high-di/dt transients, improving protection margin for sensitive gate drivers |
| Fast response time | Sub-nanosecond turn-on ensures clamping activation before transient energy damages downstream MOSFETs or ICs |
| MSL level 1 rating | Supports standard SMT reflow without baking or special handling, reducing manufacturing overhead |
Applications
| Automotive Body Control Module | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs and CAN/LIN bus signal lines from load-dump and inductive kickback in BCMs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges before they reach MCU power pins or transceiver ESD structures. Use Value: Limits transient voltage to ≤35.5 V, preserving integrity of 3.3 V/5 V logic supplies via LDOs and preventing latch-up in communication ICs. | Use Scenario: Safeguarding analog input channels (4–20 mA, 0–10 V) and digital outputs against field-wiring transients in factory automation PLCs. IC Role / Device Role / Timing Role: Primary front-end protection element mounted directly at terminal block entry points, shunting surge energy to chassis ground. Use Value: Withstands 1500 W pulses without degradation, maintaining signal accuracy and eliminating need for redundant protection stages. |
| Consumer Appliance Motor Drive | Telecom Power Supply Input |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Connected across motor terminals or H-bridge supply rails to absorb inductive energy during PWM switching transitions. Use Value: Fast clamping action prevents voltage doubling effects that could exceed MOSFET VDS ratings and cause catastrophic failure. | Use Scenario: Guarding AC-DC adapter primary-side rectifier outputs and secondary-side 12 V/5 V distribution nodes against lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-side TVS placed after isolation barrier to protect DC-DC controllers and PMICs from coupled transients. Use Value: 22.0 V VWM aligns with 24 V intermediate bus designs, allowing safe operation while providing 13.5 V headroom to clamping threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A-E3/5A | Same VWM (22 V), lower PPPM (400 W), SMA package (higher RθJA ≈ 150 °C/W) | Limited to lower-energy transients; unsuitable for 1500 W load-dump scenarios | Select when board space allows larger footprint and surge requirements are ≤400 W |
| SMCJ22A | Same VWM (22 V), identical PPPM (1500 W), but SMC package (4.5 mm height, higher thermal mass) | Higher mounting height may conflict with enclosures; better sustained power handling due to larger die | Prefer when thermal cycling reliability is critical and 1.1 mm profile is not required |
Compared with SMAJ22A-E3/5A and SMCJ22A, the SMPC22A-M3/86A delivers identical 1500 W surge capability in a 1.1 mm profile optimized for dense layouts, while offering lower thermal resistance than SMAJ and smaller volume than SMCJ - making it optimal for modern automotive and industrial modules where height and layout density are constrained.
Availability
SMPC22A-M3/86A is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC I/O protection, and consumer appliance motor drive circuits requiring stable component supply, consistent lead-time visibility, and long-term lifecycle support.
Supply support for SMPC22A-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, precision, and application-specific optimization.
The SMPC series is engineered for high-power transient suppression in space-constrained, high-reliability applications - particularly targeting automotive subsystems, industrial controls, and telecom infrastructure where low-profile robustness and repeatable clamping are mandatory.
FAQ
What is the polarity configuration of the SMPC22A-M3/86A?
The SMPC22A-M3/86A is a unidirectional transient voltage suppressor with a dual-anode, single-cathode structure. The cathode is marked by a band on the package body. Both anodes must be connected identically in circuit - mismatched routing invalidates the specified clamping performance per Vishay documentation.
Does the SMPC22A-M3/86A meet AEC-Q101 qualification?
No, the SMPC22A-M3/86A does not carry AEC-Q101 qualification. That status applies only to variants with HM3 suffix (e.g., SMPC22ANHM3/H). The M3 suffix denotes industrial-grade, halogen-free, RoHS-compliant construction without automotive qualification testing.
What is the maximum clamping voltage for the SMPC22A-M3/86A under surge conditions?
The SMPC22A-M3/86A has a maximum clamping voltage (VC) of 35.5 V when subjected to its rated peak pulse current (IPPM) of 42.3 A under the standard 10/1000 μs waveform. This value is measured with both anodes connected and represents worst-case voltage seen by protected circuitry.
Can the SMPC22A-M3/86A be used in bidirectional configurations?
No - the SMPC22A-M3/86A is strictly unidirectional. Bidirectional operation requires pairing two devices or selecting a dedicated bidirectional variant such as SMPC22CA. Using this part in reverse-biased mode beyond its specified IR limit risks permanent degradation.
What is the recommended PCB footprint for the SMPC22A-M3/86A?
The recommended mounting pad layout for SMPC22A-M3/86A follows JEDEC TO-277A standards: 0.268" × 0.186" (6.80 mm × 4.72 mm) overall pad area, with 0.050" (1.27 mm) minimum solder mask opening and 0.041" (1.04 mm) conductor width. Thermal relief to internal ground planes improves heat dissipation.
SMPC22A-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):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 42.3A
- 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)
SMPC22A-M3/86A FAQ
1.How can I place an order for SMPC22A-M3/86A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPC22A-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 SMPC22A-M3/86A reliable?
The price and inventory of SMPC22A-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 SMPC22A-M3/86A is usually 5 days.
3.What payment methods are accepted for SMPC22A-M3/86A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPC22A-M3/86A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPC22A-M3/86A?
SMPC22A-M3/86A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPC22A-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 SMPC22A-M3/86A?
For technical support, including SMPC22A-M3/86A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPC22A-M3/86A requirements.
6.How does Aetrix verify that SMPC22A-M3/86A is sourced from the original manufacturer or authorized distributors?
All SMPC22A-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 SMPC22A-M3/86A meets industry standards.
7.What is the process for return or replacement of SMPC22A-M3/86A?
All SMPC22A-M3/86A units undergo pre-shipment inspection (PSI). If there is an issue with SMPC22A-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 SMPC22A-M3/86A part is unused and in its original packaging.
Return procedure for SMPC22A-M3/86A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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