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Vishay General Semiconductor - Diodes Division SMPC15A-M3/87A
- Part No.:
- SMPC15A-M3/87A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
SMPC15A-M3/87A.pdf
- Description:
- TVS DIODE 15VWM 24.4VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:2,626
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Product details
Overview
SMPC15A-M3/87A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in the SMPC (TO-277A) package, designed for clamping inductive-switching transients on power and signal lines. It features a 15.0 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR), 24.4 V maximum clamping voltage (VC) at 1.0 A IPPM, 1500 W peak pulse power (PPPM), and operates from –55 °C to +150 °C.
For engineers reviewing the SMPC15A-M3/87A datasheet, SMPC15A-M3/87A pinout, SMPC15A-M3/87A application, or SMPC15A-M3/87A equivalent, key selection criteria include clamping performance under 10/1000 μs surge, low-profile mounting compatibility (1.1 mm height), unidirectional polarity with cathode band marking, and industrial-grade halogen-free RoHS compliance per M3 suffix.
Technical Context
This TVS diode uses silicon avalanche junction technology to provide fast response (<1 ns) and low incremental surge resistance, enabling effective suppression of ESD and load-dump transients in DC power rails and sensor interfaces. Its unidirectional configuration protects against positive-going overvoltage only, requiring correct anode–cathode orientation relative to circuit ground.
The SMPC15A-M3/87A is rated for 1.25 W steady-state power dissipation on FR4 PCB with 2 oz copper, and its thermal resistance (RθJA) is 85–100 °C/W - optimized for compact layouts where heatsinking is limited. The device meets J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15.0 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA; defines safe DC bias margin. |
| VBR min/max | 16.7 V / 18.5 V at 1.0 mA IT - guaranteed avalanche onset range; ensures consistent turn-on across production lots. |
| VC @ IPPM | 24.4 V at 1.0 A (10/1000 μs) - clamping voltage during rated surge; determines protected circuit's peak stress level. |
| PPPM | 1500 W - peak transient power handling capability; supports robust protection against ISO 7637-2 Pulse 1/2a/5a events. |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial environments. |
| Package | SMPC (TO-277A) - 3-terminal SMD outline with 0.189" × 0.134" footprint and 1.1 mm typical height; compatible with automated pick-and-place. |
| Polarity | Unidirectional - cathode marked by band; requires correct orientation to protect positive transients on grounded-anode configurations. |
Pinout & Package
SMPC15A-M3/87A uses the SMPC (TO-277A) package: a 3-terminal surface-mount case with two anode terminals (1 and 2) and one common cathode terminal (K), as defined in Vishay's mechanical drawing. The cathode band denotes the cathode end; polarity must be verified before PCB layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 | Primary current entry path during clamping | Connected to protected line (e.g., 12 V rail); shares current with Anode 2 under surge conditions. |
| Anode 2 | Secondary current entry path during clamping | Parallel anode structure lowers incremental surge resistance and improves power distribution across die. |
| Cathode (K) | Common surge current return path | Must be connected to system ground or low-impedance reference; band-marked side on package body. |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (1.1 mm typical height) | Enables use in space-constrained modules such as automotive ECUs and portable sensor nodes without compromising board stacking height. |
| Unidirectional clamping architecture | Provides precise overvoltage protection on positive DC rails while minimizing leakage and capacitance versus bidirectional variants. |
| Low incremental surge resistance | Reduces voltage overshoot during fast transients, improving protection margin for downstream MOSFETs and ICs. |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow assembly without preconditioning; eliminates moisture-related popcorning risk. |
| Halogen-free, RoHS-compliant (M3 suffix) | Fulfills environmental compliance for industrial and consumer electronics without sacrificing surge robustness or thermal performance. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply lines in engine control units against load dump and inductive switching spikes per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery input and DC/DC converter input stage. Use Value: Limits transient voltage to ≤24.4 V, preventing damage to 36 V-rated input stages and ensuring functional safety compliance. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) in factory automation sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Point-of-entry TVS on sensor PCB, mounted directly at connector interface. Use Value: Sub-1 ns response time suppresses >8 kV contact ESD (IEC 61000-4-2) before it reaches precision amplifier front-end. |
| Consumer Device USB Port Protection | Telecom Power Supply Input Clamping |
Use Scenario: Safeguarding USB VBUS lines in portable chargers and docking stations from hot-plug surges and adapter transients. IC Role / Device Role / Timing Role: Standoff-rated TVS on VBUS rail upstream of USB controller and power switch. Use Value: 15.0 V VWM allows clean 5 V operation while clamping 1000 V/10 Ω surge to <25 V - preserving USB 2.0 signal integrity. |
Use Scenario: Front-end transient suppression on AC/DC adapter outputs feeding telecom base station backplane logic. IC Role / Device Role / Timing Role: Primary surge limiter on 24 V or 48 V DC distribution bus before point-of-load regulators. Use Value: 1500 W PPPM rating handles repetitive lightning-induced surges (IEC 61000-4-5) without degradation over 10⁵ events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A-E3/5A (Vishay) | DO-214AC package; same VWM/VBR/VC specs but lower PPPM (400 W) and higher RθJA (~140 °C/W). | Limited to lower-energy transients; unsuitable for automotive load dump or telecom surge testing. | Select when board space permits larger footprint and surge energy is <400 W; not a drop-in replacement due to package and thermal mismatch. |
| 1.5SMC15A (ON Semiconductor) | SMC (DO-214AB) package; identical VWM/VBR/VC, 1500 W PPPM, but 2.5 mm height and no MSL Level 1 rating. | Requires moisture-sensitive handling and dual-reflow qualification; less suitable for high-volume automated assembly. | Use where legacy SMC footprint exists and reflow profile flexibility is available; not pin-compatible with SMPC layout. |
Compared with SMAJ15A-E3/5A and 1.5SMC15A, the SMPC15A-M3/87A delivers equivalent clamping performance in a lower-profile, MSL Level 1–qualified package optimized for dense, high-reliability production - making it preferred for next-gen automotive and industrial modules where height and assembly robustness are critical.
Availability
SMPC15A-M3/87A is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, consumer USB port safeguarding, and telecom power supply input clamping requiring stable component supply and full traceability.
Supply support for SMPC15A-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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMPC series was developed to address demand for ultra-low-profile, high-power TVS diodes in automotive and industrial SMT designs - combining TO-277A mechanical robustness with TransZORB® avalanche clamping performance.
FAQ
What is the maximum clamping voltage of the SMPC15A-M3/87A under standard test conditions?
The SMPC15A-M3/87A has a maximum clamping voltage (VC) of 24.4 V when subjected to a 10/1000 μs surge waveform at 1.0 A peak pulse current (IPPM). This value is measured per IEC 61000-4-5 methodology and reflects the actual voltage seen by downstream components during transient events - a critical parameter for ensuring protected ICs remain within absolute maximum ratings. The SMPC15A-M3/87A maintains this clamping performance across its full operating temperature range.
Is the SMPC15A-M3/87A suitable for automotive applications requiring AEC-Q101 qualification?
No, the SMPC15A-M3/87A is not AEC-Q101 qualified. It carries the M3 suffix, indicating industrial-grade, halogen-free, RoHS-compliant construction. For AEC-Q101 compliance, Vishay offers the SMPC22AN-HM3 and higher-voltage AN-series variants (e.g., SMPC22ANHM3/I), which feature the HM3 suffix and are explicitly qualified per AEC-Q101. The SMPC15A-M3/87A remains appropriate for non-automotive industrial and consumer applications where qualification is not mandated.
How does the dual-anode structure of the SMPC15A-M3/87A improve surge handling compared to single-anode TVS diodes?
The SMPC15A-M3/87A integrates two parallel anode terminals (Anode 1 and Anode 2) connected to a shared cathode, reducing total incremental surge resistance and distributing current more evenly across the junction. This design lowers voltage overshoot during fast-rising transients and enhances thermal sharing - enabling the SMPC15A-M3/87A to sustain 1500 W peak pulse power without localized hot-spot failure. Single-anode equivalents typically exhibit higher VC and reduced pulse repetition capability.
What is the meaning of the /87A suffix in SMPC15A-M3/87A?
Within Vishay's ordering nomenclature, the /87A suffix in SMPC15A-M3/87A specifies the packaging format: 13-inch diameter plastic tape and reel, with a base quantity of 6500 units per reel. This differs from the /86A variant, which uses a 7-inch reel holding 1500 units. Both /86A and /87A are mechanically identical and electrically interchangeable - the suffix solely indicates reel size and quantity, not device specification or performance.
Can the SMPC15A-M3/87A be used in bidirectional transient protection circuits?
No, the SMPC15A-M3/87A is strictly unidirectional and must be oriented with its cathode (band-marked end) toward the most positive potential in the circuit. It provides clamping only for positive-going transients relative to ground. For bidirectional protection - such as AC line inputs or data lines subject to polarity-agnostic surges - a dedicated bidirectional TVS like the SMPC15CA-M3/87A (if available) or a pair of unidirectional devices in anti-parallel configuration would be required. Using SMPC15A-M3/87A in reverse-biased mode risks permanent breakdown.
SMPC15A-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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 61.5A
- 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)
SMPC15A-M3/87A FAQ
1.How can I place an order for SMPC15A-M3/87A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPC15A-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 SMPC15A-M3/87A reliable?
The price and inventory of SMPC15A-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 SMPC15A-M3/87A is usually 5 days.
3.What payment methods are accepted for SMPC15A-M3/87A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPC15A-M3/87A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPC15A-M3/87A?
SMPC15A-M3/87A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPC15A-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 SMPC15A-M3/87A?
For technical support, including SMPC15A-M3/87A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPC15A-M3/87A requirements.
6.How does Aetrix verify that SMPC15A-M3/87A is sourced from the original manufacturer or authorized distributors?
All SMPC15A-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 SMPC15A-M3/87A meets industry standards.
7.What is the process for return or replacement of SMPC15A-M3/87A?
All SMPC15A-M3/87A units undergo pre-shipment inspection (PSI). If there is an issue with SMPC15A-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 SMPC15A-M3/87A part is unused and in its original packaging.
Return procedure for SMPC15A-M3/87A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMPC15A-M3/87A Tags
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