My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TPSMP18HE3/85A
~~2.jpg)
- Part No.:
- TPSMP18HE3/85A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP18HE3/85A.pdf
- Description:
- TVS DIODE 14.5VWM 26.5VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,828
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPSMP18HE3/85A from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode 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 (10/1000 µs). It delivers low incremental surge resistance and fast response time for protecting sensitive ICs and sensor signal lines in automotive ECUs.
For engineers reviewing the TPSMP18HE3/85A datasheet, TPSMP18HE3/85A pinout, TPSMP18HE3/85A application, or TPSMP18HE3/85A equivalent, key selection criteria include AEC-Q101 qualification, 1.0 mm profile height, 185 °C max junction temperature, RoHS-compliant matte tin terminals, and J-STD-020 MSL Level 1 reflow compatibility.
Technical Context
The TPSMP18HE3/85A uses patented PAR oxide-passivated chip construction to achieve excellent clamping performance and low dynamic impedance under transient stress. Its unidirectional configuration enables precise reverse-biased protection of DC-powered circuits without forward conduction interference.
Designed for surface-mount automotive applications, it operates across -65 °C to +185 °C junction temperature range and maintains stable VBR temperature coefficient of 0.088 %/°C. The device meets UL 94 V-0 flammability rating and supports automated placement on FR-4 PCBs with 5.0 × 5.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 16.2 V / 19.8 V - Ensures reliable triggering above system operating voltage while avoiding false clamping during normal transients |
| VC @ IPPM | 26.5 V at 15.1 A - Limits downstream voltage stress to safe levels during 10/1000 µs surges |
| PPPM | 400 W - Sustains high-energy transients common in 12 V automotive load-dump and ISO 7637-2 pulses |
| IFSM | 40 A - Withstands repetitive 10 ms half-sine surge currents without degradation |
| TJ max | +185 °C - Enables operation in under-hood environments with minimal thermal derating |
| MSL Level | Level 1 (260 °C peak) - Supports standard lead-free reflow without moisture sensitivity concerns |
| RoHS/WEEE | Compliant - Meets EU environmental directives for automotive electronics supply chain |
Pinout & Package
Package: DO-220AA (SMP), ultra-low-profile surface-mount case with 1.0 mm typical height, cathode indicated by color band, matte tin-plated leads solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to protected circuit ground or low-side return path; enables unidirectional clamping to ground |
| Cathode | Reverse-biased transient sink | Connected to protected line (e.g., sensor supply or CAN bus); conducts surge current to ground when VBR exceeded |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR oxide passivation | Enables stable VBR tolerance and long-term reliability under repeated surge stress |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD or inductive switching) |
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock |
| DO-220AA footprint | Reduces board space vs. SMA/SMB while maintaining 400 W surge capability |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth in high-reliability automotive assemblies over lifetime |
Applications
| Automotive Sensor Protection | Power Line Transient Suppression |
|---|---|
Use Scenario: Protecting analog output lines of engine coolant temperature (ECT) and manifold absolute pressure (MAP) sensors from ISO 7637-2 Pulse 1 and Pulse 2a transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between sensor signal line and chassis ground. Use Value: Limits clamped voltage to ≤26.5 V, preventing damage to 3.3 V or 5 V ADC inputs in microcontroller-based sensor modules. |
Use Scenario: Safeguarding 12 V power rails feeding infotainment head units against load-dump events (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Primary surge suppression device mounted at power entry point before DC/DC converter input. Use Value: Absorbs up to 400 W peak pulse energy without failure, maintaining rail integrity during 100 ms, 35 V transients. |
| Industrial Motor Drive Interface | Automotive Body Control Module (BCM) |
Use Scenario: Shielding RS-485 communication lines between PLC and motor drives from ground bounce and EFT bursts. IC Role / Device Role / Timing Role: Bidirectional protection not applicable; TPSMP18HE3/85A used in unidirectional configuration on VCC-referenced signal lines. Use Value: Achieves <1 ns response time to clamp EFT-induced spikes before they reach isolated transceivers. |
Use Scenario: Protecting LIN bus pins and GPIOs in BCMs exposed to battery reverse polarity and jump-start surges. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) unidirectional clamp referenced to vehicle ground. Use Value: Maintains signal integrity with <1.0 µA leakage at 14.5 V stand-off, minimizing standby current drain. |
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 | Higher VC (32.4 V at 12.3 A), lower PPPM (400 W same but lower IPPM), SMA package (1.6 mm height) | Less suitable for space-constrained automotive modules due to larger footprint and taller profile | Select TPSMP18HE3/85A when board height ≤1.0 mm is required and AEC-Q101 qualification is mandatory |
| TPSMA6.8AHE3/85A | Lower VBR (6.45–7.14 V), same DO-220AA package, 300 W PPPM, not rated for >13 V systems | Applicable only for 5 V logic rail protection; insufficient clamping margin for 12 V automotive domains | Choose TPSMP18HE3/85A for 12 V supply line or sensor interface protection where 16–20 V VBR aligns with system operating range |
Compared with SMAJ18A-E3/5AT and TPSMA6.8AHE3/85A, the TPSMP18HE3/85A uniquely combines AEC-Q101 qualification, 1.0 mm profile, and 400 W surge rating at 18 V nominal, making it optimal for next-generation compact automotive ECUs requiring validated reliability and minimal Z-height.
Availability
TPSMP18HE3/85A is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and body electronics requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for TPSMP18HE3/85A 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 designs and manufactures discrete semiconductors including diodes, MOSFETs, and optoelectronics, with emphasis on high-reliability, automotive-qualified components.
The TPSMP series belongs to Vishay's eSMP™ family of ultra-low-profile TVS diodes engineered specifically for AEC-Q101-compliant automotive transient suppression in space-constrained ECU designs.
FAQ
What is the breakdown voltage range for TPSMP18HE3/85A?
The TPSMP18HE3/85A has a specified breakdown voltage (VBR) range of 16.2 V to 19.8 V at 1 mA test current, measured per ANSI/IEEE C62.35. This ensures robust triggering above nominal 12 V automotive system voltages while avoiding nuisance conduction during normal operation or minor transients.
Is TPSMP18HE3/85A qualified for automotive applications?
Yes, the TPSMP18HE3/85A carries AEC-Q101 qualification and is designated as high-reliability/automotive grade (HE3 suffix). It undergoes rigorous stress testing including temperature cycling, high-temperature operating life, and mechanical shock to meet automotive electronics requirements.
What is the clamping voltage of TPSMP18HE3/85A under surge conditions?
The TPSMP18HE3/85A clamps to a maximum of 26.5 V at 15.1 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is guaranteed across temperature and ensures downstream ICs remain within safe operating voltage limits during ISO 7637-2 transients.
Does TPSMP18HE3/85A have a defined moisture sensitivity level?
Yes, the TPSMP18HE3/85A is rated MSL Level 1 per J-STD-020, with a maximum peak reflow temperature of 260 °C. No dry-pack or baking is required prior to assembly, simplifying manufacturing for high-volume automotive PCB production.
What package type does TPSMP18HE3/85A use, and what are its key mechanical features?
The TPSMP18HE3/85A uses the DO-220AA (SMP) package - a surface-mount case with 1.0 mm typical height, 0.142 inch length, and 0.126 inch width. It features matte tin-plated leads, UL 94 V-0 molding compound, and a cathode identification band for unambiguous orientation during automated placement.
TPSMP18HE3/85A 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)
TPSMP18HE3/85A FAQ
1.How can I place an order for TPSMP18HE3/85A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP18HE3/85A 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 TPSMP18HE3/85A reliable?
The price and inventory of TPSMP18HE3/85A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP18HE3/85A is usually 5 days.
3.What payment methods are accepted for TPSMP18HE3/85A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP18HE3/85A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP18HE3/85A?
TPSMP18HE3/85A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP18HE3/85A 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 TPSMP18HE3/85A?
For technical support, including TPSMP18HE3/85A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP18HE3/85A requirements.
6.How does Aetrix verify that TPSMP18HE3/85A is sourced from the original manufacturer or authorized distributors?
All TPSMP18HE3/85A 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 TPSMP18HE3/85A meets industry standards.
7.What is the process for return or replacement of TPSMP18HE3/85A?
All TPSMP18HE3/85A units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP18HE3/85A, 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 TPSMP18HE3/85A part is unused and in its original packaging.
Return procedure for TPSMP18HE3/85A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMP18HE3/85A Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
