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Vishay General Semiconductor - Diodes Division TPSMP18AHM3/84A
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- Part No.:
- TPSMP18AHM3/84A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP18AHM3/84A.pdf
- Description:
- TVS DIODE 15.3VWM 25.5VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,870
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Product details
Overview
TPSMP18AHM3/84A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the eSMP® Series, designed for high-reliability overvoltage protection of sensitive electronics. It features a 17.1 V to 18.9 V breakdown voltage (VBR), 15.9 A peak pulse current (IPPM), 25.5 V clamping voltage (VC) at IPPM, and operates up to +185 °C junction temperature - ideal for automotive power line and sensor interface protection.
For engineers reviewing the TPSMP18AHM3/84A datasheet, TPSMP18AHM3/84A pinout, TPSMP18AHM3/84A application, or TPSMP18AHM3/84A equivalent, this device delivers AEC-Q101 qualification, DO-220AA (SMP) package compatibility, low-profile 1.0 mm height, and MSL Level 1 reflow capability - critical for automotive ECU, infotainment, and ADAS subsystem design.
Technical Context
The TPSMP18AHM3/84A employs passivated anisotropic rectifier technology optimized for fast response (<1 ns) and low incremental surge resistance. Its unidirectional architecture provides robust forward-biased surge handling with 40 A IFSM and 2.5 W steady-state power dissipation on infinite heatsink at 75 °C.
Designed for 10/1000 μs waveform compliance per ANSI/IEEE C62.35, it delivers 300 W peak pulse power (PPPM) across its VBR range and maintains stable clamping performance up to +150 °C ambient, supported by a +0.088 %/°C VBR temperature coefficient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 17.1 V / 18.9 V - ensures reliable triggering above 15.3 V stand-off while avoiding false trips during normal 12 V automotive transients |
| VC @ IPPM | 25.5 V - limits downstream IC voltage stress during 15.9 A surge, protecting 24 V-rated components |
| IPPM | 15.9 A - sustains ISO 7637-2 Pulse 1 & 2a surges without degradation when mounted on 5 mm × 5 mm copper pads |
| TJ max | +185 °C - enables under-hood deployment without thermal derating in engine control modules |
| Package | DO-220AA (SMP) - 1.0 mm profile supports automated SMT placement and fits tight board spaces in compact ECUs |
| AEC-Q101 | Qualified - meets automotive-grade reliability requirements for vibration, temperature cycling, and humidity testing |
Pinout & Package
DO-220AA (SMP) surface-mount package with cathode indicated by color band; matte tin-plated terminals compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point during surge | Connected to protected line (e.g., CAN_H or LIN bus); conducts during positive transients |
| Cathode | Clamped output node | Connected to ground or low-impedance return path; defines clamping reference and polarity |
Key Features
| Feature | Design Value |
|---|---|
| Passivated anisotropic rectifier technology | Enables consistent VBR stability and low leakage (<1 μA at VWM) over lifetime and temperature |
| 1.0 mm typical height | Reduces board-level Z-height constraints in stacked modules and camera control units |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free assembly without preconditioning or special handling |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., load dump edge rates >100 V/μs) |
| Halogen-free, RoHS-compliant | Fulfills automotive OEM material compliance requirements including VW 80101 and GMW3172 |
Applications
| Automotive Power Line Protection | Infotainment System Interface |
|---|---|
Use Scenario: Protecting 12 V supply rails in engine control units against ISO 7637-2 Pulse 5a (load dump) and Pulse 1 (inductive switch-off). IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between battery input and DC/DC converter input stage. Use Value: Limits voltage to ≤25.5 V during 15.9 A surges, preventing damage to 36 V-rated buck controllers and enabling compliance with ISO 16750-2. | Use Scenario: Shielding USB 2.0, HDMI, or LVDS signal lines in head unit displays from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS placed at connector ingress point to shunt transients before reaching serializer/deserializer ICs. Use Value: Clamps ±15 kV contact ESD (IEC 61000-4-2) within <1 ns while maintaining signal integrity via minimal parasitic capacitance. |
| ADAS Camera Module Input | Industrial Sensor Signal Conditioning |
Use Scenario: Safeguarding MIPI CSI-2 differential pairs and power inputs in surround-view camera modules exposed to automotive EMC environments. IC Role / Device Role / Timing Role: Dual-role protection: anode-to-VCC for power rail clamping and cathode-to-ground for signal line referencing. Use Value: Withstands 185 °C junction temperature and passes AEC-Q101 stress tests, ensuring reliability in sealed, thermally isolated housings. | Use Scenario: Protecting analog outputs (4–20 mA) and digital I/O (RS-485) of industrial pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: Primary overvoltage clamp on field-side signal lines interfacing with PLC analog input cards. Use Value: Delivers 300 W peak pulse power handling and 15.9 A surge current capacity to survive lightning-induced surges per IEC 61000-4-5 Level 3. |
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-E3/5AT | DO-214AC (SMA) package; 18.0–20.0 V VBR; 26.5 V VC; 13.9 A IPPM; 400 W PPPM | Higher clamping voltage and lower surge current rating; larger footprint (2.5 mm height) | Select when higher peak power (400 W) is required and board space allows SMA package |
| TPSMA6.8A-Q | Same DO-220AA package; lower VBR (6.45–7.14 V); 10.5 V VC; 500 A IPPM; AEC-Q101 qualified | Optimized for 5 V logic rail protection; not suitable for 12 V/24 V systems due to premature conduction | Select only for sub-10 V signal or power rail protection where tighter VBR tolerance is critical |
Compared with SMAJ18A-E3/5AT and TPSMA6.8A-Q, the TPSMP18AHM3/84A offers superior surge current density (15.9 A in 1.0 mm height), tighter VBR tolerance (±5 %), and optimized thermal performance for under-hood automotive use - making it preferred for space-constrained 12 V/24 V power line protection.
Availability
TPSMP18AHM3/84A is available at Aetrix Electronics and suitable for automotive electronic control units, infotainment system interfaces, and ADAS camera modules requiring stable component supply and AEC-Q101 compliance.
Supply support for TPSMP18AHM3/84A 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 optoelectronics for automotive, industrial, and computing markets.
The eSMP® Series, including TPSMP18AHM3/84A, was developed specifically for high-power-density transient suppression in automotive environments - balancing low profile, high surge capability, and AEC-Q101 qualification.
FAQ
What is the breakdown voltage range of the TPSMP18AHM3/84A?
The TPSMP18AHM3/84A has a specified breakdown voltage (VBR) range of 17.1 V minimum to 18.9 V maximum at 1.0 mA test current. This ±5 % tolerance ensures precise triggering above nominal 12 V/24 V system voltages while avoiding nuisance conduction during normal operation - a key requirement for automotive power rail protection where TPSMP18AHM3/84A is commonly deployed.
Is the TPSMP18AHM3/84A suitable for automotive applications?
Yes, the TPSMP18AHM3/84A is AEC-Q101 qualified and rated for operation up to +185 °C junction temperature. Its DO-220AA package meets MSL Level 1 reflow requirements, and its construction uses halogen-free, RoHS-compliant materials - all verified per Vishay's qualification report for TPSMP18AHM3/84A. These attributes make it suitable for under-hood ECUs, body control modules, and ADAS systems.
What is the clamping voltage of the TPSMP18AHM3/84A at its rated peak pulse current?
The TPSMP18AHM3/84A exhibits a maximum clamping voltage (VC) of 25.5 V at its rated peak pulse current (IPPM) of 15.9 A, measured using the standard 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream components like 36 V-rated DC/DC converters remain within safe operating limits when TPSMP18AHM3/84A is used.
Does the TPSMP18AHM3/84A have a bidirectional configuration?
No, the TPSMP18AHM3/84A is a unidirectional TVS diode, meaning it conducts only during positive voltage excursions relative to its cathode. Its datasheet explicitly states "Uni-direction only" under FEATURES, and electrical characteristics confirm no reverse breakdown specification. For bidirectional protection, a separate part such as TPSMP18CA would be required - TPSMP18AHM3/84A is engineered exclusively for single-polarity clamping applications.
What packaging format is supplied for the TPSMP18AHM3/84A?
The TPSMP18AHM3/84A is supplied in 7-inch diameter plastic tape and reel format, with a base quantity of 3000 units per reel (ordering code /84A). The package complies with JEDEC standards for SMT handling, and the DO-220AA (SMP) case is optimized for high-speed pick-and-place equipment - a key advantage confirmed in Vishay's mechanical data for TPSMP18AHM3/84A.
TPSMP18AHM3/84A 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-220AA (SMP)
TPSMP18AHM3/84A FAQ
1.How can I place an order for TPSMP18AHM3/84A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP18AHM3/84A 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 TPSMP18AHM3/84A reliable?
The price and inventory of TPSMP18AHM3/84A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP18AHM3/84A is usually 5 days.
3.What payment methods are accepted for TPSMP18AHM3/84A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP18AHM3/84A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP18AHM3/84A?
TPSMP18AHM3/84A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP18AHM3/84A 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 TPSMP18AHM3/84A?
For technical support, including TPSMP18AHM3/84A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP18AHM3/84A requirements.
6.How does Aetrix verify that TPSMP18AHM3/84A is sourced from the original manufacturer or authorized distributors?
All TPSMP18AHM3/84A 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 TPSMP18AHM3/84A meets industry standards.
7.What is the process for return or replacement of TPSMP18AHM3/84A?
All TPSMP18AHM3/84A units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP18AHM3/84A, 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 TPSMP18AHM3/84A part is unused and in its original packaging.
Return procedure for TPSMP18AHM3/84A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMP18AHM3/84A Tags
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