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Vishay General Semiconductor - Diodes Division TPSMP18-E3/84A
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- Part No.:
- TPSMP18-E3/84A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP18-E3/84A.pdf
- Description:
- TVS DIODE 14.5VWM 26.5VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,234
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Product details
Overview
TPSMP18-E3/84A from Vishay General Semiconductor is a unidirectional transient voltage suppressor diode in DO-220AA (SMP) package, designed for automotive-grade surge protection. It features a breakdown voltage range of 16.2 V to 19.8 V at 1 mA test current, 26.5 V maximum clamping voltage at 15.1 A peak pulse current, and 400 W peak pulse power rating (10/1000 µs waveform). It operates from –65 °C to +185 °C and is RoHS-compliant.
For engineers reviewing the TPSMP18-E3/84A datasheet, TPSMP18-E3/84A pinout, TPSMP18-E3/84A application, or TPSMP18-E3/84A equivalent, key selection criteria include clamping voltage under surge, junction temperature capability, unidirectional polarity, DO-220AA mechanical compatibility, and AEC-Q101 qualification status for automotive electronics.
Technical Context
The TPSMP18-E3/84A uses Vishay's patented PAR oxide passivated chip construction to achieve low incremental surge resistance and excellent clamping performance. Its fast response time and low profile (1.0 mm typical height) support high-density PCB layouts in space-constrained automotive modules.
It is rated for 1.0 W steady-state power dissipation on infinite heatsink at 50 °C ambient and withstands 40 A non-repetitive forward surge current (10 ms half-sine). The device meets MSL Level 1 per J-STD-020C and is qualified to AEC-Q101 for high-reliability automotive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage V(BR) | 16.2 V min to 19.8 V max at 1 mA - defines minimum voltage at which avalanche conduction begins under DC stress |
| Clamping Voltage VC | 26.5 V max at 15.1 A IPPM - limits transient-induced overvoltage across protected circuitry |
| Peak Pulse Power PPPM | 400 W (10/1000 µs waveform) - determines maximum transient energy absorption capability |
| Operating Temperature Range | –65 °C to +185 °C - supports under-hood and powertrain environments without derating |
| Package | DO-220AA (SMP) - ultra-low-profile surface-mount package with 1.0 mm typical height and matte tin-plated leads |
| Polarity | Cathode indicated by color band - ensures correct orientation during automated placement and circuit integration |
Pinout & Package
DO-220AA (SMP) package: 2-terminal surface-mount device with cathode band marking; dimensions 3.61 mm × 2.18 mm × 1.0 mm (L × W × H); epoxy meets UL-94V-0; terminals solderable per J-STD-002B and JESD22-B102D.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side of protected line; enables unidirectional clamping to ground |
| Cathode | Current exit point during forward conduction; avalanche node during reverse transients | Marked by color band; connected to higher-potential side (e.g., supply rail or signal line) to clamp surges toward ground |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR oxide passivation | Enables stable avalanche characteristics and long-term reliability under repeated surge stress |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a) |
| MSL Level 1 rating | Allows unlimited floor life and reflow compatibility without dry-pack requirements |
| AEC-Q101 qualification | Validates robustness for automotive powertrain, body control, and ADAS modules |
| UL-94V-0 epoxy | Meets flammability safety requirements for enclosed automotive electronic assemblies |
Applications
| Automotive Power Line Protection | Engine Control Unit (ECU) Signal Lines |
|---|---|
Use Scenario: Protecting 12 V battery-fed power rails in body control modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power rail and chassis ground to clamp surges above 26.5 V. Use Value: Withstands 400 W peak pulses and operates up to +185 °C, enabling direct placement near power switches without thermal derating. | Use Scenario: Safeguarding CAN, LIN, or sensor analog inputs in engine control units exposed to ESD and coupled noise. IC Role / Device Role / Timing Role: Low-capacitance unidirectional suppressor shunting transients to ground before reaching MCU I/O pins. Use Value: 26.5 V clamping voltage ensures signal integrity for 5 V or 3.3 V logic interfaces while meeting ISO 10605 ESD immunity. |
| ADAS Camera Module Power Input | Electric Power Steering (EPS) Motor Driver Protection |
Use Scenario: Securing 5 V or 12 V input to image sensor and ISP power supplies in rear-view or surround-view camera systems. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC-DC converter output, placed upstream of LDO regulators. Use Value: DO-220AA footprint minimizes board area; 1.0 mm height avoids interference with lens housing and flex cable routing. | Use Scenario: Protecting gate drivers and current sense circuits in EPS motor control inverters subjected to inductive switching spikes. IC Role / Device Role / Timing Role: Fast-response TVS absorbing turn-off voltage spikes from high-current MOSFETs or IGBTs. Use Value: 15.1 A IPPM rating and 26.5 V clamping ensure safe operation during 100 A+ motor phase commutation events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ18A | DO-214AC (SMA) package; 28.0 V clamping at 13.9 A; 400 W rating; same V(BR) range but higher VC | Larger footprint (4.5 mm × 2.7 mm) and 2.3 mm height limit use in ultra-thin modules | Choose SMAJ18A only if DO-220AA assembly capability is unavailable or thermal mass requirements exceed TPSMP18-E3/84A capability |
| TPSMP18A-E3/84A | Tighter V(BR) tolerance (17.1–18.9 V), lower clamping (25.5 V at 15.9 A), same DO-220AA package and AEC-Q101 qualification | Preferred where tighter voltage regulation and lower clamping margin are required for sensitive downstream ICs | Select TPSMP18A-E3/84A when design margins demand <25.5 V clamping or tighter V(BR) binning for production consistency |
Compared with SMAJ18A, TPSMP18-E3/84A offers 35 % lower profile and 15 % lower clamping voltage in a smaller footprint-critical for modern ADAS and EPS modules. Against TPSMP18A-E3/84A, it trades tighter V(BR) control for broader initial tolerance, simplifying binning logistics in high-volume automotive manufacturing.
Availability
TPSMP18-E3/84A is available at Aetrix Electronics and suitable for automotive power line protection, engine control unit (ECU) signal lines, and ADAS camera module power inputs requiring stable component supply across multi-year vehicle production cycles.
Supply support for TPSMP18-E3/84A 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 high-reliability diodes, rectifiers, and protection devices for automotive, industrial, and computing markets.
The TPSMP series was engineered specifically for AEC-Q101-compliant transient suppression in automotive power and signal networks-emphasizing low clamping, high surge robustness, and ultra-compact packaging for next-generation ECUs and ADAS systems.
FAQ
What is the clamping voltage of the TPSMP18-E3/84A under standard 10/1000 µs surge conditions?
The TPSMP18-E3/84A has a maximum clamping voltage (VC) of 26.5 V at 15.1 A peak pulse current (IPPM) using the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's Document Number 88937. The clamping performance ensures protected downstream ICs remain within safe operating voltage limits during automotive transients such as ISO 7637-2 pulse 5a.
Is the TPSMP18-E3/84A qualified for automotive applications?
Yes, the TPSMP18-E3/84A carries the "E3" suffix indicating commercial grade with AEC-Q101 qualification. It meets rigorous stress testing including temperature cycling, humidity bias, and surge endurance-validated for use in engine control units, body electronics, and ADAS subsystems. Its operating junction temperature range of –65 °C to +185 °C further confirms suitability for under-hood deployment.
What does the "84A" in TPSMP18-E3/84A indicate?
The "84A" in TPSMP18-E3/84A is Vishay's preferred package code denoting 7-inch diameter plastic tape-and-reel packaging with a base quantity of 3000 units. This format supports high-speed automated pick-and-place assembly and is compatible with standard SMT feeders used in Tier 1 automotive electronics manufacturing lines.
How does the DO-220AA package of the TPSMP18-E3/84A compare to traditional SMA packages in terms of board space?
The DO-220AA (SMP) package of the TPSMP18-E3/84A measures 3.61 mm × 2.18 mm × 1.0 mm, occupying approximately 45 % less board area and 57 % less height than the DO-214AC (SMA) package (4.5 mm × 2.7 mm × 2.3 mm). This reduction enables denser routing in compact ADAS camera modules and EPS control boards where vertical clearance is constrained by connectors or shielding.
Does the TPSMP18-E3/84A support bidirectional transient suppression?
No, the TPSMP18-E3/84A is strictly unidirectional. Its electrical structure and polarity marking (cathode band) are designed for clamping transients on positive-going lines referenced to ground. For bidirectional protection-such as AC signal lines or differential buses-engineers must select a dedicated bidirectional variant like TPSMP18CA or alternate families explicitly rated for symmetrical clamping.
TPSMP18-E3/84A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-220AA
- Series:
- PAR®, eSMP®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 14.5V
- Voltage - Breakdown (Min):
- 16.2V
- Voltage - Clamping (Max) @ Ipp:
- 26.5V
- Current - Peak Pulse (10/1000µs):
- 15.1A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-220AA (SMP)
TPSMP18-E3/84A FAQ
1.How can I place an order for TPSMP18-E3/84A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP18-E3/84A 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 TPSMP18-E3/84A reliable?
The price and inventory of TPSMP18-E3/84A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP18-E3/84A is usually 5 days.
3.What payment methods are accepted for TPSMP18-E3/84A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP18-E3/84A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP18-E3/84A?
TPSMP18-E3/84A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP18-E3/84A 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 TPSMP18-E3/84A?
For technical support, including TPSMP18-E3/84A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP18-E3/84A requirements.
6.How does Aetrix verify that TPSMP18-E3/84A is sourced from the original manufacturer or authorized distributors?
All TPSMP18-E3/84A 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 TPSMP18-E3/84A meets industry standards.
7.What is the process for return or replacement of TPSMP18-E3/84A?
All TPSMP18-E3/84A units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP18-E3/84A, 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 TPSMP18-E3/84A part is unused and in its original packaging.
Return procedure for TPSMP18-E3/84A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMP18-E3/84A Tags
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