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Vishay General Semiconductor - Diodes Division TPSMP18HE3/84A
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- Part No.:
- TPSMP18HE3/84A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP18HE3/84A.pdf
- Description:
- TVS DIODE 14.5VWM 26.5VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,371
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Product details
Overview
TPSMP18HE3/84A from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) in DO-220AA (SMP) package, with 16.2 V to 19.8 V breakdown voltage (VBR), 26.5 V clamping voltage (VC) at 15.1 A peak pulse current, and 400 W peak pulse power rating for VBR ≥13 V. It delivers low-profile protection (1.0 mm height) for sensor signal lines in AEC-Q101-compliant automotive ECUs.
For engineers reviewing the TPSMP18HE3/84A datasheet, TPSMP18HE3/84A pinout, TPSMP18HE3/84A application, or TPSMP18HE3/84A equivalent, key selection criteria include clamping performance under 10/1000 µs surge, AEC-Q101 qualification status, DO-220AA mechanical compatibility, and thermal derating above 25 °C ambient.
Technical Context
The TPSMP18HE3/84A uses patented PAR oxide-passivated chip construction to achieve low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD and load-dump transients in automotive electronics. Its unidirectional configuration supports cathode-grounded protection topologies on DC supply rails and signal lines.
Rated for operation from −65 °C to +185 °C junction temperature, it sustains 40 A non-repetitive forward surge current (IFSM) and maintains ≤1.0 µA reverse leakage at 14.5 V stand-off (VWM) up to 150 °C - critical for high-reliability engine control and ADAS sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 16.2 V / 19.8 V - defines minimum voltage at which device enters avalanche conduction; ensures reliable turn-on before downstream IC damage |
| VC @ IPPM | 26.5 V at 15.1 A - maximum clamped voltage during 10/1000 µs surge; limits stress on protected 24 V automotive circuitry |
| PPPM | 400 W - peak pulse power handling for VBR ≥13 V; supports ISO 7637-2 Pulse 5a (load dump) compliance |
| VWM | 14.5 V - maximum continuous reverse working voltage; sets safe operating margin below VBR min |
| IR @ VWM | ≤1.0 µA at 25 °C - ultra-low leakage preserves battery drain budget in always-on vehicle modules |
| TJ max | +185 °C - extended junction temperature rating enables placement near heat sources in powertrain modules |
| Package | DO-220AA (SMP) - 1.0 mm profile enables automated SMT placement in space-constrained ADAS camera housings |
Pinout & Package
DO-220AA (SMP) surface-mount package with matte tin-plated leads, 1.0 mm typical height, and cathode indicated by color band. Compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input side of unidirectional TVS | Connected to protected line (e.g., sensor output); conducts surge current toward cathode ground path |
| Cathode | Ground reference terminal | Marked by color band; tied to system ground plane to complete low-inductance surge shunt path |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR oxide passivation | Enables stable VBR tolerance (±10 %) and low dynamic resistance across 1000+ surge cycles |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and ESD (HBM ±8 kV) |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| UL 94 V-0 molding compound | Prevents flame propagation in enclosed ECU enclosures per automotive safety standards |
| Low-profile 1.0 mm height | Reduces board-level Z-height in multi-layer ADAS sensor stacks where mechanical clearance is <1.2 mm |
Applications
| Automotive Engine Control Unit (ECU) | ADAS Camera Power Input Protection |
|---|---|
Use Scenario: Protects microcontroller I/O pins and CAN transceiver power rails against ISO 7637-2 load dump transients during alternator regulation failure. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12 V supply rail and chassis ground to clamp surges to ≤26.5 V within nanoseconds. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic circuits by limiting overvoltage exposure duration to <100 ns. |
Use Scenario: Shields 5 V imaging sensor power input from coupled transients induced by adjacent high-current actuators in front-camera modules. IC Role / Device Role / Timing Role: Standoff-rated TVS (VWM = 14.5 V) installed upstream of LDO regulator to absorb 10/1000 µs pulses without affecting steady-state regulation. Use Value: Maintains uninterrupted image capture during ignition events by sustaining <1 µA leakage at 12 V nominal supply. |
| Automotive HVAC Blower Motor Driver | Body Control Module (BCM) LIN Bus Line |
Use Scenario: Guards MOSFET gate drivers and current-sense amplifiers from inductive kickback when 24 V blower motor switches off abruptly. IC Role / Device Role / Timing Role: Fast-response TVS connected across motor driver output to divert 40 A IFSM surge energy away from sensitive analog front-end components. Use Value: Eliminates need for external snubbers by achieving <1 ns response time and 0.088 %/°C VBR tempco. |
Use Scenario: Protects LIN transceiver PHY layer from ESD events (IEC 61000-4-2 ±8 kV contact) and board-level noise coupling in door module wiring harnesses. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS (CJ < 100 pF) placed directly at connector interface to preserve 19.2 kbps LIN signal integrity. Use Value: Enables direct integration into compact door module PCBs without signal rise-time degradation due to DO-220AA's minimal parasitic capacitance. |
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 V VBR; 300 W PPPM; higher 1.8 mm profile | Limited to non-automotive industrial use; not AEC-Q101 qualified | Select when cost-sensitive consumer applications require basic 18 V clamping without automotive reliability requirements |
| TPSMD18A | DO-214AB (SMC) package; same VBR range; 500 W PPPM; 2.6 mm height | Higher surge capacity but incompatible with tight Z-height constraints in modern ADAS modules | Choose for heavy-duty 24 V systems needing >400 W surge handling where board space permits larger footprint |
Compared with SMAJ18A-E3/5AT and TPSMD18A, the TPSMP18HE3/84A uniquely balances AEC-Q101 compliance, 1.0 mm profile, and 400 W surge capability - making it the only option qualified for space-constrained, safety-critical automotive signal line protection.
Availability
TPSMP18HE3/84A is available at Aetrix Electronics and suitable for automotive engine control units, ADAS camera modules, body control modules, and HVAC motor driver designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for TPSMP18HE3/84A 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 TPSMP18HE3/84A belongs to Vishay's eSMP™ series of high-power-density TVS diodes engineered specifically for AEC-Q101-compliant automotive electronics requiring robust transient immunity in minimal PCB area.
FAQ
What is the clamping voltage of the TPSMP18HE3/84A under a 10/1000 µs surge?
The TPSMP18HE3/84A clamps to a maximum of 26.5 V at its rated peak pulse current of 15.1 A under a 10/1000 µs waveform. This value is measured per Fig. 1 and Fig. 3 in Vishay document 88471 and ensures protected circuits remain below critical overvoltage thresholds during ISO 7637-2 Pulse 5a events. The TPSMP18HE3/84A achieves this with low incremental surge resistance enabled by its patented PAR oxide passivation.
Is the TPSMP18HE3/84A qualified for automotive applications?
Yes, the TPSMP18HE3/84A is AEC-Q101 qualified and designated as high-reliability/automotive grade (HE3 suffix). It meets rigorous stress tests including temperature cycling, high-temperature reverse bias (HTRB), and human-body model ESD (±8 kV). The TPSMP18HE3/84A is explicitly rated for use in engine control units, ADAS sensors, and other safety-critical automotive subsystems per Vishay documentation.
What does the "HE3/84A" suffix indicate in TPSMP18HE3/84A?
The "HE3" suffix denotes RoHS-compliant, high-reliability/automotive-grade construction meeting AEC-Q101 requirements and JESD201 Class 2 whisker resistance. The "84A" refers to the preferred packaging code: 7-inch plastic tape-and-reel format containing 3000 units. This packaging ensures compatibility with high-speed SMT placement equipment used in automotive electronics manufacturing. The TPSMP18HE3/84A is supplied in this exact configuration.
How does the TPSMP18HE3/84A compare to standard SMAJ-series TVS diodes?
The TPSMP18HE3/84A offers superior power density (400 W in DO-220AA vs. 300 W in DO-214AC), lower profile (1.0 mm vs. 1.8 mm), and AEC-Q101 qualification - features absent in standard SMAJ diodes like SMAJ18A. While both share 18 V nominal breakdown, the TPSMP18HE3/84A's patented PAR construction delivers tighter VBR tolerance and lower clamping ratio. The TPSMP18HE3/84A is purpose-built for next-generation automotive modules where space and qualification are mandatory.
What is the maximum operating temperature for the TPSMP18HE3/84A?
The TPSMP18HE3/84A has a maximum junction temperature (TJ) rating of +185 °C and operates across −65 °C to +185 °C. This extended range supports placement near heat-generating components in powertrain and transmission control units. Derating curves in Vishay document 88471 confirm sustained 400 W surge capability up to 125 °C ambient when mounted on 5.0 × 5.0 mm copper pads - a specification validated for the TPSMP18HE3/84A.
TPSMP18HE3/84A 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-220AA (SMP)
TPSMP18HE3/84A FAQ
1.How can I place an order for TPSMP18HE3/84A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP18HE3/84A 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 TPSMP18HE3/84A reliable?
The price and inventory of TPSMP18HE3/84A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP18HE3/84A is usually 5 days.
3.What payment methods are accepted for TPSMP18HE3/84A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP18HE3/84A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP18HE3/84A?
TPSMP18HE3/84A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP18HE3/84A 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 TPSMP18HE3/84A?
For technical support, including TPSMP18HE3/84A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP18HE3/84A requirements.
6.How does Aetrix verify that TPSMP18HE3/84A is sourced from the original manufacturer or authorized distributors?
All TPSMP18HE3/84A 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 TPSMP18HE3/84A meets industry standards.
7.What is the process for return or replacement of TPSMP18HE3/84A?
All TPSMP18HE3/84A units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP18HE3/84A, 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 TPSMP18HE3/84A part is unused and in its original packaging.
Return procedure for TPSMP18HE3/84A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMP18HE3/84A Tags
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