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Vishay General Semiconductor - Diodes Division TPSMP18A-E3/84A
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- Part No.:
- TPSMP18A-E3/84A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP18A-E3/84A.pdf
- Description:
- TVS DIODE 15.3VWM 25.5VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,255
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Product details
Overview
TPSMP18A-E3/84A from Vishay General Semiconductor is a unidirectional transient voltage suppressor diode in DO-220AA (SMP) package, with 17.1 V to 18.9 V breakdown voltage (VBR), 15.9 A peak pulse current (IPPM), 25.5 V clamping voltage (VC), and 400 W peak pulse power (PPPM) at 13–43 V rating range - designed for automotive-grade ESD and surge protection of sensor signal lines.
For engineers reviewing the TPSMP18A-E3/84A datasheet, TPSMP18A-E3/84A pinout, TPSMP18A-E3/84A application, or TPSMP18A-E3/84A equivalent, key selection criteria include its AEC-Q101-qualified high-reliability grade (E3 suffix), 1.0 mm profile, 185 °C max junction temperature, and low incremental surge resistance for robust transient suppression in space-constrained automotive ECUs.
Technical Context
This unidirectional TVS diode uses Vishay's patented PAR oxide passivated chip construction to deliver fast response time (<1 ns), excellent clamping capability, and stable breakdown voltage with ±5% tolerance across the 17.1–18.9 V range. It operates within -65 °C to +185 °C and meets MSL Level 1 per J-STD-020C.
Designed for surface-mount placement on PCBs with 5.0 × 5.0 mm copper pads per terminal, the device sustains 40 A non-repetitive forward surge current (IFSM) and exhibits only 1.0 µA max reverse leakage at 15.3 V stand-off voltage (VWM) and 25 °C - enabling low-power system protection without standby current penalty.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 17.1 V / 18.9 V - precise breakdown threshold ensures reliable triggering before downstream IC damage |
| VC @ IPPM | 25.5 V - clamps transients below safe operating limits of 3.3 V/5 V logic interfaces |
| PPPM | 400 W - handles high-energy 10/1000 µs surges common in automotive load-dump and ISO 7637-2 tests |
| IPPM | 15.9 A - peak surge current capacity validated under standardized waveform conditions |
| VWM | 15.3 V - maximum continuous reverse voltage without significant leakage current |
| TJ max. | +185 °C - supports operation in under-hood automotive environments with minimal derating |
| Package | DO-220AA (SMP) - ultra-low-profile 1.0 mm height enables use in compact ADAS and body control modules |
Pinout & Package
DO-220AA (SMP) package: 2-terminal surface-mount device with cathode indicated by color band; matte tin-plated leads compliant with J-STD-002B and JESD22-B102D solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point during surge conduction | Connected to protected line (e.g., CAN_H, LIN, sensor output); conducts when transient exceeds VBR |
| Cathode | Reverse-biased reference terminal; marked with color band | Connected to ground plane; defines polarity and establishes clamping path to GND during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR oxide passivation | Enables stable VBR performance and long-term reliability under thermal cycling and humidity stress |
| MSL Level 1 rating | Allows unlimited floor life and reflow compatibility without dry-pack or baking requirements |
| Low profile (1.0 mm typical height) | Reduces board stack height and avoids interference with adjacent tall components in dense automotive layouts |
| AEC-Q101 qualified (E3 suffix) | Validated for automotive applications including engine control, transmission, and chassis systems |
| UL-94V-0 epoxy case | Meets flammability safety requirements for enclosed electronic modules in passenger compartments |
Applications
| Automotive Sensor Protection | CAN Bus Transient Suppression |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine bay modules exposed to ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient-induced offset errors and prevents latch-up in 12-bit SAR ADCs by clamping to ≤25.5 V while maintaining <1.0 µA leakage at 15.3 V. | Use Scenario: Safeguarding CAN_H/CAN_L differential pair against ESD and load-dump induced spikes in body control units. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices (one per line) referenced to chassis ground. Use Value: Maintains signal integrity up to 1 Mbps by limiting capacitance to <100 pF and clamping surges before CAN transceiver damage threshold (typically 40 V). |
| Industrial Motor Drive I/O Protection | Consumer Appliance Control Board Surge Guard |
Use Scenario: Shielding GPIO and feedback lines of motor driver ICs from inductive kickback in HVAC blower and pump controllers. IC Role / Device Role / Timing Role: Point-of-entry TVS on microcontroller I/O pins connected to Hall-effect or encoder signals. Use Value: Absorbs 400 W transients without degradation, preserving timing accuracy of 10–50 kHz PWM feedback loops. | Use Scenario: Protecting microcontroller reset and communication lines in smart washing machine control boards subjected to mains-borne surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on 3.3 V supply rail and UART lines interfacing with display modules. Use Value: Prevents brownout resets and firmware corruption by clamping 1 kV/500 A surges to <25.5 V with sub-ns response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ18A | DO-214AC package (2.79 mm height), 400 W PPPM, 25.5 V VC, but higher profile and no AEC-Q101 qualification | Not suitable for space-constrained automotive modules requiring MSL Level 1 or under-hood thermal performance | Select TPSMP18A-E3/84A when board height <1.1 mm and AEC-Q101 compliance are mandatory |
| TPSMA6.8A | Same DO-220AA package, but lower VBR (6.45–7.14 V); 300 W PPPM; identical footprint and reliability grading | Applicable only for 5 V logic protection - not interchangeable for 12 V/24 V automotive signal lines | Choose TPSMP18A-E3/84A for 12 V system-level protection where VWM ≥15.3 V is required to avoid false triggering |
Compared with SMAJ18A and TPSMA6.8A, the TPSMP18A-E3/84A uniquely combines AEC-Q101 qualification, 1.0 mm profile, and 15.3 V stand-off voltage - making it the only option for compact, high-reliability 12 V automotive signal line protection without layout redesign.
Availability
TPSMP18A-E3/84A is available at Aetrix Electronics and suitable for automotive sensor protection, CAN bus interface hardening, and industrial motor drive I/O safeguarding requiring stable component supply and full traceability.
Supply support for TPSMP18A-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, MOSFETs, and passive components for automotive, industrial, and computing markets.
The TPSMP series belongs to Vishay's automotive-grade transient voltage suppressor family, engineered specifically for robust ESD and surge immunity in harsh environment ECUs - with emphasis on low profile, high power density, and AEC-Q101 validation.
FAQ
What is the breakdown voltage range of the TPSMP18A-E3/84A?
The TPSMP18A-E3/84A has a guaranteed breakdown voltage (VBR) range of 17.1 V to 18.9 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This tight ±5% tolerance ensures consistent clamping behavior across production lots and temperature extremes from -65 °C to +185 °C - critical for protecting 12 V automotive signal paths without premature conduction.
Is the TPSMP18A-E3/84A AEC-Q101 qualified?
Yes, the TPSMP18A-E3/84A carries the E3 suffix indicating commercial-grade AEC-Q101 qualification. Vishay validates this part for automotive applications including engine control, body electronics, and ADAS modules. The qualification covers temperature cycling, humidity bias HAST, ESD (HBM ≥8 kV), and mechanical shock - confirming suitability for under-hood and cabin-mounted ECUs.
What is the clamping voltage of the TPSMP18A-E3/84A at its rated peak pulse current?
The TPSMP18A-E3/84A clamps to a maximum of 25.5 V at its rated peak pulse current (IPPM) of 15.9 A under the standard 10/1000 µs waveform. This value is measured with the device mounted on a PCB using 5.0 × 5.0 mm copper pads per terminal, ensuring realistic system-level protection margin for 3.3 V and 5 V logic interfaces downstream.
Does the TPSMP18A-E3/84A have polarity marking, and how is it identified?
Yes, the TPSMP18A-E3/84A features a visible cathode band on the DO-220AA (SMP) package body. This color band denotes the cathode terminal and must be oriented toward ground in unidirectional TVS configurations. The anode is the unmarked end. Correct polarity alignment is essential to ensure proper clamping action during positive transients on protected lines.
What is the maximum operating junction temperature for the TPSMP18A-E3/84A?
The TPSMP18A-E3/84A has a maximum operating junction temperature (TJ) of +185 °C, verified per JEDEC JESD22-A104. This rating allows direct use in high-temperature automotive locations such as near engines or power inverters without external heatsinking - provided PCB copper pad area and ambient airflow meet Vishay's thermal derating guidelines in Figure 2 of Document 88937.
TPSMP18A-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):
- 15.3V
- Voltage - Breakdown (Min):
- 17.1V
- Voltage - Clamping (Max) @ Ipp:
- 25.5V
- Current - Peak Pulse (10/1000µs):
- 15.9A
- 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)
TPSMP18A-E3/84A FAQ
1.How can I place an order for TPSMP18A-E3/84A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP18A-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 TPSMP18A-E3/84A reliable?
The price and inventory of TPSMP18A-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 TPSMP18A-E3/84A is usually 5 days.
3.What payment methods are accepted for TPSMP18A-E3/84A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP18A-E3/84A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP18A-E3/84A?
TPSMP18A-E3/84A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP18A-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 TPSMP18A-E3/84A?
For technical support, including TPSMP18A-E3/84A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP18A-E3/84A requirements.
6.How does Aetrix verify that TPSMP18A-E3/84A is sourced from the original manufacturer or authorized distributors?
All TPSMP18A-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 TPSMP18A-E3/84A meets industry standards.
7.What is the process for return or replacement of TPSMP18A-E3/84A?
All TPSMP18A-E3/84A units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP18A-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 TPSMP18A-E3/84A part is unused and in its original packaging.
Return procedure for TPSMP18A-E3/84A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMP18A-E3/84A Tags
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