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Vishay General Semiconductor - Diodes Division SMP15A-M3/84A
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- Part No.:
- SMP15A-M3/84A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
SMP15A-M3/84A.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,828
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Product details
Overview
SMP15A-M3/84A from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor in the SMP (DO-220AA) package, featuring a 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR), 400 W peak pulse power (10/1000 μs), 16.4 A peak pulse current (IPPM), and 24.4 V clamping voltage (VC) at IPPM. It protects sensitive ICs and MOSFETs against inductive switching transients in industrial sensor signal lines.
For engineers reviewing the SMP15A-M3/84A datasheet, SMP15A-M3/84A pinout, SMP15A-M3/84A application, or SMP15A-M3/84A equivalent, key selection criteria include clamping performance under 10/1000 μs surge, unidirectional polarity for DC-biased lines, MSL Level 1 reflow compatibility, low-profile 1.0 mm height, and halogen-free RoHS-compliant construction.
Technical Context
The SMP15A-M3/84A operates as a unidirectional TVS diode with avalanche breakdown behavior, designed to clamp transient overvoltages before they damage downstream circuitry. Its low incremental surge resistance and fast response time ensure effective suppression of sub-microsecond ESD and lightning-induced surges.
Thermal design relies on its junction-to-lead thermal resistance of 50 °C/W and junction-to-ambient of 250 °C/W, requiring PCB copper pad areas of 5.0 mm × 5.0 mm per terminal for rated 400 W pulse handling. The device is rated for operation from –55 °C to +150 °C and meets JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum reverse working voltage before conduction; sets operating margin for DC-biased protection circuits |
| VBR min/max | 16.7 V / 18.5 V - breakdown occurs within this range at 1 mA test current; defines turn-on threshold consistency |
| VC @ IPPM | 24.4 V - clamped voltage during 16.4 A 10/1000 μs surge; determines maximum stress on protected IC input |
| PPPM | 400 W - peak pulse power rating with 10/1000 μs waveform; defines single-event surge energy handling capability |
| ID @ VWM | 1.0 μA - reverse leakage at stand-off voltage; ensures minimal power loss and signal integrity in high-impedance lines |
| TJ max | +150 °C - maximum junction temperature; supports operation in thermally constrained industrial enclosures |
| Package | SMP (DO-220AA) - ultra-low-profile 1.0 mm height, 3.61 mm × 2.18 mm footprint; optimized for automated SMT placement |
Pinout & Package
Package: SMP (DO-220AA), surface-mount, unidirectional configuration with cathode indicated by color band. Dimensions: 3.61 mm × 2.18 mm × 1.0 mm (L × W × H). Matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; connected to system ground or lower-potential rail | Provides reference node for clamping; must be routed with low-inductance path to ground plane |
| Cathode | Current exit point during reverse-biased transient clamping; connected to protected line | Color band identifies this terminal; connects directly to I/O or power line requiring surge protection |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges without derating in standard layouts |
| 24.4 V clamping voltage at 16.4 A | Limits voltage overshoot on 15 V logic or analog supply rails to safe levels for 3.3 V/5 V interface ICs |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow assembly without preconditioning or special handling |
| 1.0 mm typical height | Reduces board profile in space-constrained modules such as IoT sensor nodes and portable industrial controllers |
| Halogen-free, RoHS-compliant, industrial grade | Meets environmental compliance requirements for global industrial equipment and avoids corrosion risks in humid environments |
Applications
| Industrial Sensor Signal Protection | Automotive Body Control Module Inputs |
|---|---|
Use Scenario: Protecting 0–10 V analog output lines from load-dump and inductive kickback in factory-floor pressure/temperature sensors. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and microcontroller ADC input. Use Value: Clamps transients to ≤24.4 V while maintaining <1.0 μA leakage at 15 V, preserving measurement accuracy and preventing ADC latch-up. |
Use Scenario: Safeguarding LIN bus input pins on BCM microcontrollers against battery voltage spikes during alternator load dump. IC Role / Device Role / Timing Role: Standoff-rated TVS on LIN transceiver RX line, referenced to vehicle ground. Use Value: Responds within nanoseconds to 100 V/100 ms load dump events, limiting voltage to 24.4 V and enabling reliable communication recovery. |
| Power Supply Input Rail Protection | USB Port VBUS Line Protection |
Use Scenario: Secondary overvoltage protection on 15 V DC-DC converter outputs feeding FPGA core supplies. IC Role / Device Role / Timing Role: Parallel-connected TVS across output capacitor to absorb residual transients escaping primary regulation. Use Value: Handles 400 W pulses without degradation, ensuring sustained reliability under repeated 12–24 V automotive-grade input surges. |
Use Scenario: ESD and surge protection on USB 2.0 VBUS line in embedded host devices exposed to hot-plug events. IC Role / Device Role / Timing Role: Unidirectional clamp between VBUS and GND, upstream of USB power switch. Use Value: Low 1.0 μA leakage preserves standby current budget; 24.4 V clamping prevents damage to 5 V tolerant USB PHYs during ±15 kV contact ESD. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMP15A-M3/85A | Same electrical specs; differs only in packaging-13" tape-and-reel (10,000 pcs) vs. 7" reel (3,000 pcs) | No functional difference; selected based on production volume and SMT line feeder compatibility | Choose SMP15A-M3/84A for low-volume prototyping or small-batch manufacturing with 7" feeders |
| SMAJ15A | Same VWM (15 V) and VC (24.4 V), but SMA package (DO-214AC); higher RθJA (350 °C/W) and larger footprint (4.3 mm × 2.6 mm) | Less suitable for ultra-thin designs; requires larger PCB area and may need thermal relief for same power dissipation | Use SMAJ15A only when DO-220AA placement equipment is unavailable or legacy layout reuse is required |
Compared with SMP15A-M3/84A, the SMP15A-M3/85A offers identical protection performance in higher-volume packaging, while SMAJ15A trades compactness and thermal efficiency for broader distributor availability and legacy footprint compatibility-making SMP15A-M3/84A optimal for space- and thermal-constrained new designs.
Availability
SMP15A-M3/84A is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body electronics, and USB power rail protection requiring stable component supply, consistent MSL Level 1 reflow support, and halogen-free compliance.
Supply support for SMP15A-M3/84A 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, and protection devices with emphasis on reliability, precision, and application-specific optimization.
The SMP series was engineered for high-density, low-profile transient protection in modern SMT systems-targeting industrial automation, automotive electronics, and consumer IoT where board space, thermal performance, and reflow compatibility are critical.
FAQ
What is the maximum clamping voltage of the SMP15A-M3/84A under a 10/1000 μs surge?
The SMP15A-M3/84A clamps to a maximum of 24.4 V when subjected to its rated 16.4 A peak pulse current with a 10/1000 μs waveform. This value is measured at the device terminals under standardized test conditions (TA = 25 °C, mounted on 5.0 mm × 5.0 mm copper pads), and defines the upper voltage limit imposed on protected circuitry during surge events. The SMP15A-M3/84A maintains this clamping performance across its full operating temperature range.
Is the SMP15A-M3/84A suitable for bidirectional signal line protection?
No-the SMP15A-M3/84A is a unidirectional TVS diode, intended for DC-biased or ground-referenced lines such as power rails or single-ended analog outputs. It conducts only in reverse breakdown and does not protect against positive-going transients on AC-coupled or bipolar signal paths. For bidirectional protection, a symmetric device like the SMBJ15CA or dedicated dual-rail TVS array would be required instead of the SMP15A-M3/84A.
What is the meaning of the "M3/84A" suffix in SMP15A-M3/84A?
The "M3" suffix indicates halogen-free, RoHS-compliant, industrial-grade construction with matte tin-plated leads meeting JESD 201 Class 2 whisker resistance. The "84A" denotes the preferred packaging code: 7-inch diameter plastic tape-and-reel containing 3,000 units, optimized for high-speed SMT placement. This distinguishes SMP15A-M3/84A from variants like SMP15A-M3/85A (13-inch reel, 10,000 units), while retaining identical electrical and thermal specifications.
Does the SMP15A-M3/84A require derating at elevated ambient temperatures?
Yes-the SMP15A-M3/84A must be derated above TA = 25 °C per Figure 2 in the datasheet. Its peak pulse power capability decreases linearly to ~50 % at 125 °C ambient, due to thermal limitations of its 250 °C/W junction-to-ambient resistance. Designers must verify that the actual PCB layout (copper pad size, layer stack-up, airflow) supports the required power dissipation at the target operating temperature before finalizing the SMP15A-M3/84A placement.
Can the SMP15A-M3/84A replace a P6KE15A in an existing design?
No-the SMP15A-M3/84A is not a direct replacement for the through-hole P6KE15A. While both share a 15 V stand-off rating, the SMP15A-M3/84A uses the surface-mount SMP (DO-220AA) package (3.61 mm × 2.18 mm), whereas the P6KE15A uses the axial DO-15 package. Their thermal paths, mounting requirements, and PCB footprints are incompatible. Migration would require layout revision and revalidation of clamping performance under real-world surge conditions for the SMP15A-M3/84A.
SMP15A-M3/84A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-220AA
- 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):
- 16.4A
- Power - Peak Pulse:
- 400W
- 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:
- DO-220AA (SMP)
SMP15A-M3/84A FAQ
1.How can I place an order for SMP15A-M3/84A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMP15A-M3/84A 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 SMP15A-M3/84A reliable?
The price and inventory of SMP15A-M3/84A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMP15A-M3/84A is usually 5 days.
3.What payment methods are accepted for SMP15A-M3/84A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMP15A-M3/84A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMP15A-M3/84A?
SMP15A-M3/84A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMP15A-M3/84A 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 SMP15A-M3/84A?
For technical support, including SMP15A-M3/84A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMP15A-M3/84A requirements.
6.How does Aetrix verify that SMP15A-M3/84A is sourced from the original manufacturer or authorized distributors?
All SMP15A-M3/84A 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 SMP15A-M3/84A meets industry standards.
7.What is the process for return or replacement of SMP15A-M3/84A?
All SMP15A-M3/84A units undergo pre-shipment inspection (PSI). If there is an issue with SMP15A-M3/84A, 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 SMP15A-M3/84A part is unused and in its original packaging.
Return procedure for SMP15A-M3/84A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMP15A-M3/84A Tags
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