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Vishay General Semiconductor - Diodes Division SMP11-E3/85A
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- Part No.:
- SMP11-E3/85A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
SMP11-E3/85A.pdf
- Description:
- TVS DIODE 11VWM 20.1VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,851
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Product details
Overview
SMP11-E3/85A from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor in the SMP (DO-220AA) package, featuring a 11 V stand-off voltage (VWM), 12.2–13.5 V breakdown voltage (VBR), 400 W peak pulse power (10/1000 μs), 22.0 A peak pulse current (IPPM), and 18.2 V clamping voltage (VC). It protects MOSFETs and ICs against inductive switching transients in industrial power supplies.
For engineers reviewing the SMP11-E3/85A datasheet, SMP11-E3/85A pinout, SMP11-E3/85A application, or SMP11-E3/85A equivalent, key selection criteria include unidirectional polarity, 1.0 mm profile for space-constrained PCBs, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a unidirectional TVS diode, leveraging avalanche breakdown to clamp transient overvoltages above its VBR threshold while maintaining low leakage (<1.0 μA at VWM = 11 V). Its 50 °C/W junction-to-lead thermal resistance supports reliable power dissipation during repetitive surge events when mounted per recommended pad layout.
The SMP11-E3/85A delivers fast response time and low incremental surge resistance, enabling effective suppression of 10/1000 μs waveform transients up to 400 W without degradation. It meets JESD201 Class 2 whisker testing and UL 94 V-0 flammability requirements for industrial-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - maximum reverse operating voltage before clamping begins; defines safe DC/AC signal line operating margin |
| VBR min/max | 12.2 V / 13.5 V - guaranteed avalanche initiation range at 1.0 mA test current; ensures consistent turn-on behavior |
| VC @ IPPM | 18.2 V - clamped voltage at 22.0 A peak pulse; determines maximum stress imposed on protected downstream circuitry |
| PPPM | 400 W - peak pulse power handling with 10/1000 μs waveform; defines transient energy absorption capability |
| IFSM | 40 A - non-repetitive forward surge rating (10 ms half-sine); supports robustness against accidental polarity reversal |
| TJ max | +150 °C - maximum junction temperature; enables operation in high-ambient industrial environments |
Pinout & Package
Package: SMP (DO-220AA), surface-mount, halogen-free, RoHS-compliant, 1.0 mm typical height, cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal under forward bias; connected to system ground or low-side reference | Enables conduction path during transient overvoltage events when cathode is held at higher potential |
| Cathode | Current exit terminal under forward bias; connected to protected line or signal node | Provides clamping reference point; polarity marking ensures correct orientation during automated placement |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (1.0 mm) | Enables use in ultra-thin consumer and portable electronics where Z-height is constrained |
| 400 W peak pulse power (10/1000 μs) | Handles high-energy transients common in motor drives and relay-controlled industrial I/O |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow without moisture-induced popcorn failure |
| Matte tin-plated leads | Ensures solderability per J-STD-002 and JESD22-B102, reducing voiding risk in high-volume assembly |
Applications
| Industrial Motor Drive I/O Protection | Automotive Body Control Module (BCM) Signal Lines |
|---|---|
Use Scenario: Protects microcontroller GPIO and CAN transceiver signal lines from load dump and inductive kickback in 12 V systems. IC Role / Device Role / Timing Role: Unidirectional TVS clamps reverse transients on signal inputs while allowing normal forward communication. Use Value: Limits voltage excursion to ≤18.2 V during 22 A surges, preventing latch-up or gate oxide damage in 3.3 V/5 V logic interfaces. |
Use Scenario: Shields LIN bus and sensor analog outputs (e.g., temperature, position) from ESD and switching noise in vehicle cabin modules. IC Role / Device Role / Timing Role: Fast-response transient suppressor placed directly at connector entry points to shunt ESD pulses before reaching ASIC inputs. Use Value: Sub-1 ns response time and <1.0 μA leakage at 11 V ensure signal integrity and low standby current in always-on nodes. |
| Industrial PLC Digital Input Protection | Consumer Appliance Power Supply Surge Suppression |
Use Scenario: Installed across optocoupler input terminals in 24 V DC digital input cards exposed to field wiring transients. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbs repetitive 400 W surges without degradation, preserving long-term isolation integrity. Use Value: 150 °C max junction temperature and 50 °C/W RθJL allow sustained operation in enclosed control cabinets with ambient up to +70 °C. |
Use Scenario: Placed across primary-side rectifier output in switch-mode power supplies to suppress transformer leakage spikes and MOSFET turn-off overshoot. IC Role / Device Role / Timing Role: Clamps voltage excursions above 13.5 V to protect bulk capacitor and controller ICs during startup and fault conditions. Use Value: 40 A IFSM rating withstands brief reverse polarity events during manufacturing or service, improving field return rate. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMP11A-M3/85A | Same electrical specs and package; differs only in marking code (AZ vs. E3) and internal traceability-identical performance and qualification. | No functional difference; both rated for industrial temperature range and MSL Level 1. | Select SMP11A-M3/85A if legacy BOM alignment or Vishay's standard M3 suffix (halogen-free, RoHS, whisker-tested) is required. |
| SMAJ11A | Same VWM (11 V) and VC (18.2 V), but in larger SMA (DO-214AC) package; 400 W rating, 22 A IPPM, but 2.5 mm height and higher RθJA (300 °C/W). | Less suitable for ultra-low-profile designs; requires larger PCB area and more thermal pad area for equivalent thermal performance. | Choose SMAJ11A only if existing footprint reuse or higher mechanical robustness is prioritized over board space savings. |
Compared with SMP11A-M3/85A, the SMP11-E3/85A offers identical protection performance in the same DO-220AA package but with alternate traceability coding; versus SMAJ11A, it reduces Z-height by 60 % and improves thermal resistance by 20 %, enabling denser layouts and better surge endurance in thermally constrained applications.
Availability
SMP11-E3/85A is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, PLC digital inputs, and consumer appliance power supplies requiring stable component supply and full traceability.
Supply support for SMP11-E3/85A 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 protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMP series was designed specifically for high-density, automated SMT applications demanding low-profile transient suppression with industrial-grade thermal and environmental robustness.
FAQ
What is the clamping voltage of the SMP11-E3/85A at its rated peak pulse current?
The SMP11-E3/85A has a maximum clamping voltage (VC) of 18.2 V when subjected to its rated peak pulse current (IPPM) of 22.0 A using a 10/1000 μs waveform. This value is measured under standardized test conditions per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMP11-E3/85A maintains this clamping performance across its qualified temperature range.
Is the SMP11-E3/85A suitable for lead-free reflow soldering processes?
Yes, the SMP11-E3/85A is rated for MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C, making it fully compatible with standard lead-free soldering profiles. Its matte tin-plated terminals meet J-STD-002 solderability requirements, and the molding compound complies with UL 94 V-0 flammability standards. No pre-baking is required prior to reflow.
Does the SMP11-E3/85A have bidirectional or unidirectional polarity?
The SMP11-E3/85A is a unidirectional transient voltage suppressor, meaning it conducts only in reverse bias above its breakdown voltage and blocks current in forward bias up to its rated IFSM of 40 A. Polarity is marked by a cathode band on the SMP (DO-220AA) package body. This configuration is optimized for DC-biased signal and power line protection.
What is the maximum operating junction temperature for the SMP11-E3/85A?
The SMP11-E3/85A has a maximum junction temperature (TJ max) of +150 °C, as specified in its thermal characteristics table. This rating allows continuous operation in high-ambient industrial environments when mounted on the recommended 5.0 mm × 5.0 mm copper pads. Its typical junction-to-lead thermal resistance (RθJL) of 50 °C/W further supports thermal management in compact layouts.
How does the SMP11-E3/85A differ from the SMP11A-M3/85A?
The SMP11-E3/85A and SMP11A-M3/85A share identical electrical specifications, package dimensions (SMP/DO-220AA), thermal performance, and qualification status. The difference lies solely in internal traceability coding: "E3" denotes a specific wafer lot and assembly line designation, while "M3" indicates halogen-free, RoHS-compliant, and JESD201 Class 2 whisker-tested construction. Both are functionally interchangeable.
SMP11-E3/85A 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):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 20.1V
- Current - Peak Pulse (10/1000µs):
- 19.9A
- 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)
SMP11-E3/85A FAQ
1.How can I place an order for SMP11-E3/85A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMP11-E3/85A 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 SMP11-E3/85A reliable?
The price and inventory of SMP11-E3/85A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMP11-E3/85A is usually 5 days.
3.What payment methods are accepted for SMP11-E3/85A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMP11-E3/85A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMP11-E3/85A?
SMP11-E3/85A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMP11-E3/85A 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 SMP11-E3/85A?
For technical support, including SMP11-E3/85A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMP11-E3/85A requirements.
6.How does Aetrix verify that SMP11-E3/85A is sourced from the original manufacturer or authorized distributors?
All SMP11-E3/85A 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 SMP11-E3/85A meets industry standards.
7.What is the process for return or replacement of SMP11-E3/85A?
All SMP11-E3/85A units undergo pre-shipment inspection (PSI). If there is an issue with SMP11-E3/85A, 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 SMP11-E3/85A part is unused and in its original packaging.
Return procedure for SMP11-E3/85A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMP11-E3/85A Tags
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