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Vishay General Semiconductor - Diodes Division SMP8.0A-M3/85A
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- Part No.:
- SMP8.0A-M3/85A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
SMP8.0A-M3/85A.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,330
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Product details
Overview
SMP8.0A-M3/85A from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor in the SMP (DO-220AA) package, rated for 400 W peak pulse power (10/1000 μs), 8.0 V stand-off voltage (VWM), and 13.6 V maximum clamping voltage (VC) at 29.4 A IPPM. It protects sensitive ICs and MOSFETs against inductive switching transients in industrial and telecom power rails.
For engineers reviewing the SMP8.0A-M3/85A datasheet, SMP8.0A-M3/85A pinout, SMP8.0A-M3/85A application, or SMP8.0A-M3/85A equivalent, key selection criteria include clamping performance under 10/1000 μs surge, unidirectional polarity, M3 halogen-free RoHS-compliant construction, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
The SMP8.0A-M3/85A operates as a unidirectional avalanche diode with a breakdown voltage range of 8.89 V to 9.83 V at 1.0 mA test current. Its low 13.6 V clamping voltage at 29.4 A ensures robust protection for 3.3 V–5 V logic interfaces without overstressing downstream components.
Thermal design is supported by a typical junction-to-lead thermal resistance of 50 °C/W and operation up to +150 °C junction temperature. The device meets J-STD-020 MSL Level 1 and JESD 201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum reverse stand-off voltage before conduction; defines safe operating threshold for 8 V nominal rail protection. |
| VBR min/max | 8.89 V / 9.83 V - Breakdown occurs within this range at 1.0 mA; ensures consistent turn-on across production lots. |
| VC @ IPPM | 13.6 V at 29.4 A - Clamping voltage during 10/1000 μs surge; limits stress on protected ICs to ≤13.6 V. |
| PPPM | 400 W - Peak pulse power handling per 10/1000 μs waveform; supports high-energy transient suppression. |
| IFSM | 40 A - Non-repetitive forward surge rating (10 ms half-sine); enables resilience to short-circuit events. |
| TJ max | +150 °C - Maximum junction temperature; allows deployment in high-ambient industrial environments. |
Pinout & Package
Package: SMP (DO-220AA), surface-mount, single-ended unidirectional configuration with cathode band marking. Dimensions: 3.61 mm × 2.18 mm × 1.0 mm (L × W × H), 5.0 mm × 5.0 mm recommended copper pad area per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during clamping | Connected to protected circuit ground or low-side reference; must be routed with low-inductance path to GND plane. |
| Cathode | Current exit point during clamping | Connected to protected line (e.g., 8 V supply rail); color band identifies this terminal for correct orientation. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Enables suppression of high-energy transients common in motor drives and relay coils without degradation. |
| 13.6 V clamping at 29.4 A | Provides margin below 15 V absolute maximum ratings of many industrial microcontrollers and interface ICs. |
| M3 suffix compliance | Halogen-free, RoHS-compliant, and passes JESD 201 Class 2 whisker testing-ensures long-term reliability in lead-free reflow. |
| MSL Level 1 rating | Allows unlimited floor life and direct placement without baking; simplifies manufacturing logistics. |
Applications
| Industrial Motor Control | Telecom Power Supply Protection |
|---|---|
Use Scenario: Suppresses voltage spikes from relay coil de-energization and H-bridge shoot-through in PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed across 8 V auxiliary supply rail feeding gate drivers and optocouplers. Use Value: Limits transient overshoot to ≤13.6 V, preventing latch-up or permanent damage to 8 V-tolerant control ICs. |
Use Scenario: Protects DC-DC converter inputs in base station power distribution units exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level clamping device on +8 V bias rail upstream of PMIC and monitoring circuits. Use Value: Absorbs 400 W pulses without failure, maintaining system uptime during Category A/B surge events per IEC 61000-4-5. |
| Automotive Body Control Module | Consumer Appliance Power Input |
Use Scenario: Shields LIN bus transceivers and window lift motor drivers from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS on 8 V regulated rail powering CAN/LIN interface ICs. Use Value: Fast response (<1 ns) and low clamping ensure signal integrity remains intact during ISO 7637-2 Pulse 1/2a events. |
Use Scenario: Guards 8 V internal supply in smart washing machine mainboard against ESD and inductive kickback from pump relays. IC Role / Device Role / Timing Role: Secondary overvoltage clamp on isolated 8 V rail feeding MCU and display controller. Use Value: 1.0 mm profile fits tight board spaces; matte tin terminations ensure solder joint reliability after multiple thermal cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMP8.0A-M3/84A | Same electrical specs and package; differs only in tape-and-reel packaging (3000 pcs vs. 10000 pcs on 7″ vs. 13″ reel). | Identical functional use; selected when smaller reel quantity aligns with production batch size or storage constraints. | Choose SMP8.0A-M3/84A for pilot runs or low-volume builds where 3000-unit reels reduce inventory overhead. |
| SMAJ8.0A | DO-214AC (SMA) package; 400 W rating but higher RθJA (350 °C/W), larger footprint (4.5 mm × 2.7 mm), and 14.5 V clamping at 28.6 A. | Less suitable for ultra-thin designs; requires larger PCB area and delivers weaker clamping performance. | Consider SMAJ8.0A only if DO-220AA placement equipment is unavailable or legacy layout reuse mandates SMA footprint. |
Compared with SMP8.0A-M3/84A, the SMP8.0A-M3/85A offers identical protection performance with optimized logistics for high-volume SMT lines; versus SMAJ8.0A, it delivers superior thermal efficiency, tighter clamping, and 30 % smaller board area-critical for space-constrained industrial controllers.
Availability
SMP8.0A-M3/85A is available at Aetrix Electronics and suitable for industrial motor control, telecom power supply protection, automotive body control modules, and consumer appliance power input circuits requiring stable component supply and full M3-compliant traceability.
Supply support for SMP8.0A-M3/85A 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 transient protection devices with emphasis on reliability and application-specific optimization.
The SMP series was developed to deliver high-power transient suppression in ultra-low-profile surface-mount packages for next-generation industrial and automotive electronics where board space and thermal performance are critical.
FAQ
What is the clamping voltage of the SMP8.0A-M3/85A under standard surge conditions?
The SMP8.0A-M3/85A has a maximum clamping voltage (VC) of 13.6 V when subjected to its rated peak pulse current (IPPM) of 29.4 A using the industry-standard 10/1000 μs waveform. This value is measured at TA = 25 °C with the device mounted on 5.0 mm × 5.0 mm copper pads per terminal, ensuring repeatable thermal conditions during surge events. The SMP8.0A-M3/85A maintains this clamping performance across its full operating temperature range.
Is the SMP8.0A-M3/85A compatible with lead-free reflow soldering processes?
Yes, the SMP8.0A-M3/85A is fully compatible with lead-free reflow soldering. Its matte tin-plated terminals meet J-STD-002 and JESD 22-B102 solderability standards, and the M3 suffix confirms compliance with JESD 201 Class 2 whisker resistance testing. The device is rated for a maximum peak reflow temperature of 260 °C per J-STD-020 MSL Level 1, allowing direct placement without pre-baking.
How does the SMP8.0A-M3/85A differ from the SMP8.0A-M3/84A?
The SMP8.0A-M3/85A and SMP8.0A-M3/84A share identical electrical specifications, package (SMP/DO-220AA), and M3 compliance. Their sole difference is packaging format: SMP8.0A-M3/85A ships in 13″ diameter plastic tape and reel with 10,000 units per reel, while SMP8.0A-M3/84A uses 7″ reels with 3,000 units. Both are functionally interchangeable in circuit design and layout.
What is the maximum operating temperature for the SMP8.0A-M3/85A?
The SMP8.0A-M3/85A has a maximum junction temperature (TJ max) of +150 °C and an operating junction and storage temperature range of -55 °C to +150 °C. This wide range supports deployment in harsh environments such as industrial enclosures, outdoor telecom cabinets, and engine bay-adjacent automotive modules where ambient temperatures exceed 85 °C.
Does the SMP8.0A-M3/85A require a heatsink for 400 W pulse handling?
No external heatsink is required for single-pulse 400 W events. The SMP8.0A-M3/85A relies on PCB copper pads (5.0 mm × 5.0 mm per terminal) to dissipate surge energy. Its typical junction-to-lead thermal resistance is 50 °C/W, and the 10/1000 μs pulse duration is too brief for significant heat accumulation. Continuous power dissipation remains limited by RθJA (250 °C/W), but transient suppression does not demand additional thermal infrastructure.
SMP8.0A-M3/85A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-220AA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 29.4A
- 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)
SMP8.0A-M3/85A FAQ
1.How can I place an order for SMP8.0A-M3/85A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMP8.0A-M3/85A 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 SMP8.0A-M3/85A reliable?
The price and inventory of SMP8.0A-M3/85A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMP8.0A-M3/85A is usually 5 days.
3.What payment methods are accepted for SMP8.0A-M3/85A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMP8.0A-M3/85A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMP8.0A-M3/85A?
SMP8.0A-M3/85A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMP8.0A-M3/85A 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 SMP8.0A-M3/85A?
For technical support, including SMP8.0A-M3/85A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMP8.0A-M3/85A requirements.
6.How does Aetrix verify that SMP8.0A-M3/85A is sourced from the original manufacturer or authorized distributors?
All SMP8.0A-M3/85A 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 SMP8.0A-M3/85A meets industry standards.
7.What is the process for return or replacement of SMP8.0A-M3/85A?
All SMP8.0A-M3/85A units undergo pre-shipment inspection (PSI). If there is an issue with SMP8.0A-M3/85A, 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 SMP8.0A-M3/85A part is unused and in its original packaging.
Return procedure for SMP8.0A-M3/85A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMP8.0A-M3/85A Tags
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