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Vishay General Semiconductor - Diodes Division SMPC22A-M3/87A
- Part No.:
- SMPC22A-M3/87A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
SMPC22A-M3/87A.pdf
- Description:
- TVS DIODE 22VWM 35.5VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:5,657
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Product details
Overview
SMPC22A-M3/87A from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor (TVS) in the SMPC (TO-277A) package, designed for clamping inductive-switching transients on power and signal lines. It features a 22.0 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR), 35.5 V maximum clamping voltage (VC) at 42.3 A peak pulse current, and 1500 W peak pulse power (10/1000 μs). It is used to protect MOSFETs and ICs in industrial motor drives and automotive sensor interfaces.
For engineers reviewing the SMPC22A-M3/87A datasheet, SMPC22A-M3/87A pinout, SMPC22A-M3/87A application, or SMPC22A-M3/87A equivalent, key selection criteria include unidirectional polarity, 1.1 mm profile suitability for automated placement, MSL Level 1 reflow compatibility (260 °C peak), 150 °C max junction temperature, and halogen-free RoHS-compliant construction.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, requiring correct orientation in series with protected circuitry. Its low incremental surge resistance and fast response time enable effective suppression of ESD and load-dump transients without affecting normal DC bias operation.
The SMPC22A-M3/87A uses a planar junction structure housed in an SMPC (TO-277A) molded package with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102. Thermal performance is characterized by RθJA ≤ 100 °C/W (FR4, 2 oz copper) and RθJM ≤ 3 °C/W, supporting reliable operation under repetitive surge conditions when mounted per JEDEC 51-2A/51-14.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22.0 V - Maximum reverse stand-off voltage before significant leakage; defines safe operating DC bias limit. |
| VBR (min/max) | 24.4 V / 26.9 V - Breakdown occurs within this range at 1 mA test current; ensures predictable turn-on threshold. |
| VC @ IPPM | 35.5 V at 42.3 A - Clamped voltage during 10/1000 μs surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 1500 W - Peak pulse power handling capability; enables robust protection against IEC 61000-4-5 level 4 surges. |
| PD (TA = 25 °C) | 1.25 W - Steady-state power dissipation limit; sets thermal derating baseline for continuous leakage management. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial ambient environments. |
| Package | SMPC (TO-277A) - 3-terminal surface-mount outline with 1.1 mm typical height; optimized for high-density PCB layouts. |
Pinout & Package
SMPC22A-M3/87A is housed in the SMPC (TO-277A) package: a 3-terminal, unidirectional surface-mount case with cathode band marking. Dimensions conform to JEDEC TO-277A: 4.80 × 3.70 × 1.10 mm (L × W × H), featuring matte tin-plated leads solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 & Anode 2 | Common anode connection | Internally tied terminals accepting positive surge energy; must be connected to protected line side. |
| Cathode | Clamping output terminal | Connected to ground or low-impedance return path; delivers clamped voltage during transient events. |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile | 1.1 mm typical height - enables use in ultra-thin consumer and automotive modules where Z-height is constrained. |
| Unidirectional clamping | Single-polarity suppression - ideal for DC-biased power rails and signal lines where reverse conduction must be blocked. |
| Low incremental surge resistance | Ensures minimal voltage overshoot during fast-rising transients - critical for protecting sensitive gate drivers and microcontrollers. |
| AEC-Q101 qualified option available | SMPC22AN variant meets automotive reliability standard - SMPC22A-M3/87A is industrial grade but shares identical electrical specs and footprint. |
| MSL Level 1 rating | Reflow-compatible up to 260 °C peak - eliminates pre-bake requirements and supports standard SMT assembly processes. |
Applications
| Industrial Motor Drives | Automotive Sensor Interfaces |
|---|---|
|
Use Scenario: Protection of gate drivers and logic inputs against inductive kickback from brushed DC motors and solenoids. IC Role / Device Role / Timing Role: Unidirectional TVS placed between driver output and ground to clamp flyback spikes before they reach CMOS inputs. Use Value: Limits transient voltage to ≤35.5 V, preventing latch-up or oxide damage in 3.3 V/5 V logic circuits operating at 22 V nominal bus. |
Use Scenario: Shielding LIN/CAN node transceivers and Hall-effect sensors from battery dump and load-switching noise in engine compartments. IC Role / Device Role / Timing Role: Standoff-rated clamping element on VCC and signal lines, absorbing 1500 W surges without degradation over 10⁵ cycles. Use Value: Maintains 22.0 V DC integrity while suppressing >100 V transients - enabling reliable operation in AEC-Q100 Grade 2 temperature ranges. |
| Telecom Power Supplies | Computer Peripheral Ports |
|
Use Scenario: Input-stage surge protection for 24 V telecom DC-DC converters exposed to lightning-induced surges on long-line feeds. IC Role / Device Role / Timing Role: Primary clamping device upstream of input filter capacitors and controller ICs. Use Value: Withstands 42.3 A peak pulse current and dissipates 1500 W transient energy - meeting IEC 61000-4-5 Level 4 requirements. |
Use Scenario: ESD and surge hardening of USB 2.0 VBUS and D+/D− lines in docking stations and external storage enclosures. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <100 pF) placed directly at connector entry point to shunt transients to chassis ground. Use Value: 1.1 mm height allows placement adjacent to micro-USB connectors without interfering with mating height; RoHS/halogen-free compliance meets PCBA environmental mandates. |
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 (Vishay) | DO-214AC (SMA) package; 22 V VWM; same VBR/VC specs but higher RθJA (150 °C/W); lower PPPM (400 W). | Limited to lower-energy transients; unsuitable for 1500 W IEC 61000-4-5 applications. | Select SMAJ22A-E3/5A only when board space permits larger footprint and surge energy is ≤400 W. |
| SMCJ22A (Littelfuse) | SMC (DO-214AB) package; 22 V VWM; VC = 35.5 V at 42.3 A; identical PPPM and thermal specs but non-AEC-Q101 industrial version. | Same clamping performance and surge rating; differs in lead finish (matte Sn vs. annealed Sn) and JEDEC registration. | SMCJ22A offers direct functional equivalence and layout compatibility if SMPC footprint is not required. |
Compared with SMAJ22A-E3/5A and SMCJ22A, the SMPC22A-M3/87A provides superior power density (1500 W in 1.1 mm height), tighter thermal resistance (RθJA ≤ 100 °C/W), and optimized SMT manufacturability - making it preferred for space-constrained, high-surge industrial and automotive modules.
Availability
SMPC22A-M3/87A is available at Aetrix Electronics and suitable for industrial motor drives, automotive sensor interfaces, and telecom power supplies requiring stable component supply, consistent MSL Level 1 reflow performance, and halogen-free RoHS compliance.
Supply support for SMPC22A-M3/87A 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 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, industrial, and computing systems demanding compact, robust, and automated-assembly-ready solutions.
FAQ
What is the polarity configuration of the SMPC22A-M3/87A?
The SMPC22A-M3/87A is a unidirectional TVS diode with cathode-band marking indicating the cathode terminal. Anode 1 and Anode 2 are internally shorted and serve as the common anode connection. This configuration allows it to clamp only positive-going transients relative to ground, making it suitable for DC-biased lines where reverse conduction must be blocked. The SMPC22A-M3/87A must be oriented correctly on PCB to ensure proper clamping function.
Does the SMPC22A-M3/87A meet automotive qualification standards?
The SMPC22A-M3/87A is an industrial-grade part with halogen-free, RoHS-compliant construction and MSL Level 1 reflow rating, but it is not AEC-Q101 qualified. For automotive applications, Vishay offers the SMPC22AN-M3 variant (with HM3 suffix), which carries AEC-Q101 qualification. The SMPC22A-M3/87A shares identical electrical specifications and SMPC (TO-277A) package dimensions with the AN version, differing only in qualification status and ordering code.
What is the maximum clamping voltage of the SMPC22A-M3/87A under surge conditions?
The SMPC22A-M3/87A has a maximum clamping voltage (VC) of 35.5 V when subjected to its rated peak pulse current (IPPM) of 42.3 A using a 10/1000 μs waveform. This value is measured at the device terminals and represents the upper bound of voltage seen by downstream circuitry during worst-case transient events. The SMPC22A-M3/87A maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C).
Can the SMPC22A-M3/87A be used in parallel for higher surge current handling?
No - the SMPC22A-M3/87A is not designed for parallel operation due to mismatch in dynamic impedance and VBR tolerances (24.4–26.9 V), which would cause uneven current sharing and potential thermal runaway. For higher surge ratings, select a single higher-power device such as SMPC33A or SMPC36A, or implement staged protection with upstream current-limiting elements. The SMPC22A-M3/87A must be applied as a standalone clamping device per IEC 61000-4-5 guidelines.
What does the "/87A" suffix indicate in SMPC22A-M3/87A?
The "/87A" suffix denotes the tape-and-reel packaging option: 13-inch diameter plastic tape and reel containing 6500 units. It is one of two standard packaging codes for the SMPC22A-M3 series, the other being "/86A" (7-inch reel, 1500 units). Both share identical electrical, thermal, and mechanical characteristics. The "/87A" format supports high-volume SMT assembly lines requiring extended reel life and reduced changeover frequency. The SMPC22A-M3/87A remains fully compatible with all standard pick-and-place equipment calibrated for TO-277A footprints.
SMPC22A-M3/87A 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-M3/87A FAQ
1.How can I place an order for SMPC22A-M3/87A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPC22A-M3/87A 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-M3/87A reliable?
The price and inventory of SMPC22A-M3/87A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMPC22A-M3/87A is usually 5 days.
3.What payment methods are accepted for SMPC22A-M3/87A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPC22A-M3/87A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPC22A-M3/87A?
SMPC22A-M3/87A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPC22A-M3/87A 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-M3/87A?
For technical support, including SMPC22A-M3/87A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPC22A-M3/87A requirements.
6.How does Aetrix verify that SMPC22A-M3/87A is sourced from the original manufacturer or authorized distributors?
All SMPC22A-M3/87A 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-M3/87A meets industry standards.
7.What is the process for return or replacement of SMPC22A-M3/87A?
All SMPC22A-M3/87A units undergo pre-shipment inspection (PSI). If there is an issue with SMPC22A-M3/87A, 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-M3/87A part is unused and in its original packaging.
Return procedure for SMPC22A-M3/87A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMPC22A-M3/87A Tags
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