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Vishay General Semiconductor - Diodes Division TPSMP43AHE3/85A
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- Part No.:
- TPSMP43AHE3/85A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP43AHE3/85A.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,542
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Product details
Overview
TPSMP43AHE3/85A from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode in DO-220AA (SMP) package, with 40.9 V to 45.2 V breakdown voltage (VBR), 59.3 V clamping voltage (VC) at 6.7 A peak pulse current, and 400 W peak pulse power rating for 10/1000 µs waveform. It protects signal lines and ICs in automotive sensor units and powertrain control modules.
For engineers reviewing the TPSMP43AHE3/85A datasheet, TPSMP43AHE3/85A pinout, TPSMP43AHE3/85A application, or TPSMP43AHE3/85A equivalent, key selection criteria include AEC-Q101 qualification, 1.0 mm profile, 36.8 V stand-off voltage (VWM), 1.0 µA max reverse leakage at VWM, and DO-220AA thermal performance on FR-4 PCB with 5.0 × 5.0 mm copper pads.
Technical Context
This TVS diode uses Vishay's patented PAR oxide-passivated chip construction to achieve low incremental surge resistance and excellent clamping capability. Its unidirectional configuration provides precise overvoltage protection for DC-biased signal paths, with fast response time and stable VBR temperature coefficient of 0.101 %/°C.
Designed for high-reliability automotive environments, the device meets MSL Level 1 per J-STD-020, operates from −65 °C to +185 °C junction temperature, and features matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V - defines minimum and maximum voltage at which device enters avalanche conduction under 1 mA test current |
| VWM | 36.8 V - maximum continuous reverse working voltage before significant leakage begins |
| VC @ IPPM | 59.3 V at 6.7 A - clamping voltage during 10/1000 µs surge, limiting stress on downstream circuitry |
| PPPM | 400 W - peak pulse power handling capability, derated above 25 °C ambient per Fig. 2 |
| IR @ VWM | 1.0 µA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ max | +185 °C - enables operation in under-hood automotive locations without thermal shutdown |
| Package | DO-220AA (SMP) - 1.0 mm height, 2.67 mm length, compatible with automated SMT placement and reflow |
Pinout & Package
DO-220AA (SMP) surface-mount package with cathode indicated by color band; two-terminal device with anode and cathode leads optimized for low-inductance PCB layout and thermal dissipation via 5.0 × 5.0 mm copper pads per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected circuit ground or low-side reference | Provides return path for surge current during clamping; requires low-impedance connection to system ground plane |
| Cathode | Current exit point in forward bias; marked by color band; connected to protected line | Accepts transient energy from signal/power line and routes it to ground through anode; polarity-critical for unidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR oxide passivation | Enables stable VBR and low leakage across temperature and lifetime, critical for AEC-Q101 compliance |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without moisture-induced damage |
| 0.101 %/°C VBR tempco | Minimizes drift in clamping threshold over automotive temperature range (−40 °C to +125 °C ambient) |
| 400 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/3a transients and IEC 61000-4-5 surges in 12 V systems |
| 1.0 mm profile | Reduces board space and improves airflow in dense engine control unit (ECU) layouts |
Applications
| Automotive Sensor Protection | Powertrain Control Module |
|---|---|
Use Scenario: Protecting CAN bus signal lines and analog sensor outputs (e.g., crankshaft position, oxygen sensor) from load dump and ESD events. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed directly at connector interface or IC input pins. Use Value: Limits transient voltage to ≤59.3 V while maintaining <1.0 µA leakage at 36.8 V, preserving signal fidelity and preventing microcontroller reset. | Use Scenario: Safeguarding MCU I/O and gate drivers in transmission control units exposed to battery voltage spikes and inductive switching noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 5 V or 3.3 V supply rails and high-side driver outputs. Use Value: Delivers 400 W surge capacity with 185 °C max junction temperature, enabling reliable operation in under-hood thermal environments. |
| Infotainment System Interface | Body Control Module |
Use Scenario: Shielding USB, LIN, and audio signal lines in head units and display modules against ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (<3 pF typical at zero bias) unidirectional clamp adjacent to connector. Use Value: Maintains signal integrity up to 100 MHz due to minimal parasitic capacitance and sub-nanosecond response time. | Use Scenario: Protecting door module microcontrollers and LED drivers from alternator ripple and relay coil flyback. IC Role / Device Role / Timing Role: Secondary surge suppression on 12 V input rail and switched 5 V logic supplies. Use Value: Withstands 40 A non-repetitive forward surge (IFSM) and 2.5 W steady-state power, supporting long-term reliability in cyclic duty applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A | DO-214AC (SMA) package; 4.5 mm height; 400 W PPPM; VC = 69.4 V @ 5.8 A | Higher clamping voltage and larger footprint; less suitable for ultra-low-profile automotive modules | Select SMAJ43A only if board height >1.0 mm is acceptable and DO-220AA placement equipment is unavailable. |
| TPSMA6.8AHE3/85A | Same DO-220AA package but lower VBR (6.45–7.14 V); 300 W PPPM; VC = 10.5 V @ 28.6 A | Targeted for 5 V logic rail protection rather than 36 V+ automotive supply lines | Choose TPSMA6.8AHE3/85A for low-voltage digital interfaces; TPSMP43AHE3/85A remains optimal for 12/24 V system-level protection. |
Compared with SMAJ43A, TPSMP43AHE3/85A offers 10.1 V lower clamping voltage and 1.0 mm lower profile-critical for space-constrained ECUs. Against TPSMA6.8AHE3/85A, it delivers 100 W higher surge power and 30 V higher VWM, making it uniquely suited for 24 V commercial vehicle applications.
Availability
TPSMP43AHE3/85A is available at Aetrix Electronics and suitable for automotive sensor units, powertrain control modules, and body electronics requiring stable component supply with AEC-Q101 qualification and full traceability.
Supply support for TPSMP43AHE3/85A 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 is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The TPSMP series belongs to Vishay's eSMP™ family of ultra-low-profile TVS diodes, engineered specifically for AEC-Q101-compliant automotive electronics where space, thermal robustness, and surge immunity are critical.
FAQ
What is the clamping voltage of the TPSMP43AHE3/85A under standard 10/1000 µs surge conditions?
The TPSMP43AHE3/85A has a maximum clamping voltage (VC) of 59.3 V at 6.7 A peak pulse current (IPPM) for a 10/1000 µs waveform. This value is measured per Fig. 1 and Fig. 3 in Vishay document 88471 and ensures downstream ICs remain within safe operating voltage limits during transients. The TPSMP43AHE3/85A achieves this with low incremental surge resistance enabled by its PAR oxide-passivated chip.
Is the TPSMP43AHE3/85A qualified for automotive use?
Yes, the TPSMP43AHE3/85A is AEC-Q101 qualified and rated for automotive-grade reliability. Its HE3 suffix indicates RoHS compliance, high-reliability construction, and passing of JESD201 Class 2 whisker testing. The device operates from −65 °C to +185 °C junction temperature and meets MSL Level 1 per J-STD-020, confirming suitability for under-hood and safety-critical vehicle systems.
What does the "85A" in TPSMP43AHE3/85A indicate?
The "85A" denotes the preferred package code specifying 13-inch diameter plastic tape and reel packaging with a base quantity of 10,000 units. This format supports high-volume SMT assembly and is distinct from the "84A" variant (7-inch reel, 3,000 units). Both share identical electrical and mechanical specifications; only the packaging differs.
How does the TPSMP43AHE3/85A compare to the TPSMP43 (non-A) variant?
The TPSMP43AHE3/85A has tighter VBR tolerance (40.9–45.2 V) versus TPSMP43 (38.7–47.3 V), resulting in more predictable clamping behavior. It also features improved thermal stability and is explicitly designated for automotive grade (AEC-Q101), whereas TPSMP43 is intended for general industrial use. Both use DO-220AA packaging and share identical pinout and mounting requirements.
Can the TPSMP43AHE3/85A be used in bidirectional configurations?
No, the TPSMP43AHE3/85A is unidirectional only, as confirmed in the "FEATURES" section of Vishay document 88471. Its internal structure and cathode marking require correct polarity orientation. For bidirectional protection, engineers must select a dedicated bidirectional TVS such as the SMBJ43CA or equivalent, not the TPSMP43AHE3/85A.
TPSMP43AHE3/85A 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):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 6.7A
- 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)
TPSMP43AHE3/85A FAQ
1.How can I place an order for TPSMP43AHE3/85A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP43AHE3/85A 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 TPSMP43AHE3/85A reliable?
The price and inventory of TPSMP43AHE3/85A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP43AHE3/85A is usually 5 days.
3.What payment methods are accepted for TPSMP43AHE3/85A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP43AHE3/85A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP43AHE3/85A?
TPSMP43AHE3/85A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP43AHE3/85A 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 TPSMP43AHE3/85A?
For technical support, including TPSMP43AHE3/85A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP43AHE3/85A requirements.
6.How does Aetrix verify that TPSMP43AHE3/85A is sourced from the original manufacturer or authorized distributors?
All TPSMP43AHE3/85A 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 TPSMP43AHE3/85A meets industry standards.
7.What is the process for return or replacement of TPSMP43AHE3/85A?
All TPSMP43AHE3/85A units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP43AHE3/85A, 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 TPSMP43AHE3/85A part is unused and in its original packaging.
Return procedure for TPSMP43AHE3/85A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMP43AHE3/85A Tags
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