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Vishay General Semiconductor - Diodes Division TPSMP43AHM3_A/I
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- Part No.:
- TPSMP43AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP43AHM3_A/I.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,014
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Product details
Overview
TPSMP43AHM3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMP (DO-220AA) package, designed for high-reliability automotive and industrial overvoltage protection. It features 40.9 V to 45.2 V breakdown voltage (VBR), 36.8 V stand-off voltage (VWM), 400 W peak pulse power (10/1000 µs), 6.7 A peak pulse current (IPPM), and 185 °C maximum junction temperature - deployed to protect sensor signal lines and drive transistors against ESD and surge events.
For engineers reviewing the TPSMP43AHM3_A/I datasheet, TPSMP43AHM3_A/I pinout, TPSMP43AHM3_A/I application, or TPSMP43AHM3_A/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, clamping performance at rated surge current, thermal derating behavior, and real-world use context for automotive-grade PCB-level transient suppression.
Technical Context
The TPSMP43AHM3_A/I uses passivated anisotropic rectifier technology optimized for low incremental surge resistance and fast response time (<1 ns), enabling effective clamping of fast-rising transients such as ISO 7637-2 pulses and IEC 61000-4-2 ESD events. Its unidirectional configuration supports DC-biased signal and power rail protection with minimal leakage (≤1 μA at VWM).
Rated for TJ = –65 °C to +185 °C operation and qualified to AEC-Q101, the device sustains 400 W peak pulse power under 10/1000 µs waveform when mounted on 5.0 mm × 5.0 mm copper pads, and exhibits 0.101 %/°C temperature coefficient of VBR, ensuring stable breakdown across automotive thermal ranges.
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 during transient events |
| VWM | 36.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| IPPM | 6.7 A - peak surge current it can clamp at 10/1000 µs waveform without failure |
| VC @ IPPM | 59.3 V - clamped voltage seen by protected circuit during full-rated surge event |
| PPPM | 400 W - peak transient power dissipation capability under standard 10/1000 µs test condition |
| TJ max | +185 °C - enables operation in under-hood automotive environments and high-power industrial enclosures |
| Package | SMP (DO-220AA) - ultra-low-profile surface-mount package (1.0 mm typical height) compatible with automated placement |
Pinout & Package
SMP (DO-220AA) is a two-terminal, surface-mount package with cathode indicated by a color band. Dimensions: 4.00 mm × 2.18 mm × 1.0 mm (L × W × H), matte tin-plated leads, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or low-side reference in unidirectional TVS configuration | Provides return path for surge current during clamping; must be routed with low-inductance connection to reference plane |
| Cathode | Current exit terminal in forward bias; connected to protected line (e.g., sensor output or MCU I/O) | Accepts transient energy from protected node and shunts it to ground via anode; polarity marking ensures correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock per JESD22 standards |
| MSL Level 1 (260 °C peak) | Enables single-reflow assembly without moisture sensitivity concerns - no baking required prior to SMT |
| 185 °C junction rating | Supports sustained operation in high-ambient environments such as engine control units and battery management systems |
| Low profile (1.0 mm height) | Reduces board stack height and improves airflow in dense automotive ECUs and ADAS modules |
| 0.101 %/°C VBR tempco | Minimizes drift in clamping threshold across –40 °C to +125 °C ambient, critical for precision sensor interface protection |
Applications
| Automotive Sensor Protection | Industrial Motor Drive I/O |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and microcontroller ADC input to clamp transients before they reach sensitive analog front-end. Use Value: Limits voltage excursion to ≤59.3 V during 6.7 A surge, preserving signal integrity and preventing ADC saturation or latch-up. | Use Scenario: Safeguarding digital I/O and enable lines of gate drivers in variable-frequency motor drives subject to switching-induced dv/dt coupling. IC Role / Device Role / Timing Role: Transient suppressor on isolated logic-level control signals interfacing with high-voltage power stages. Use Value: Fast response (<1 ns) and low clamping voltage ensure timing-critical enable/disable signals remain within logic thresholds during EFT bursts. |
| Automotive Body Control Module | Industrial PLC Analog Input |
Use Scenario: Shielding LIN bus transceiver pins and LED driver outputs in door module ECUs subjected to battery reverse polarity and jump-start surges. IC Role / Device Role / Timing Role: Bidirectionally referenced unidirectional TVS (anode grounded) protecting 12 V supply rails and signal paths tied to vehicle battery. Use Value: Withstands 40 A IFSM non-repetitive surge and maintains <1 μA leakage at 36.8 V, minimizing standby current drain. | Use Scenario: Guarding 4–20 mA current loop inputs in programmable logic controllers exposed to field wiring transients and lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input terminals upstream of precision op-amp conditioning circuits. Use Value: 400 W peak power rating and 59.3 V clamping allow robust protection without requiring series impedance that would degrade loop accuracy. |
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-E3/57T | DO-214AC (SMA) package; 43 V VBR; 400 W PPPM; 150 °C TJ max; higher profile (2.29 mm) | Larger footprint and lower thermal endurance limit; less suitable for space-constrained automotive modules | Select when legacy SMA layout exists and 185 °C operation is not required |
| TPSMA6.8A-Q | Same family but 6.8 V VBR; 250 W PPPM; identical SMP package and AEC-Q101 qualification | Lower clamping voltage and reduced surge handling - appropriate only for low-energy signal-line protection | Choose only if system-level surge stress is below 6.7 A and VWM ≤ 5.8 V is acceptable |
Compared with SMAJ43A-E3/57T, TPSMP43AHM3_A/I offers superior thermal margin (+35 °C TJ), smaller footprint, and lower mounting height - critical for next-gen automotive ECUs. Against TPSMA6.8A-Q, it provides 60 % higher peak power rating and 3× higher clamping voltage headroom, making it suitable for 12 V/24 V power rail protection where higher VWM is mandatory.
Availability
TPSMP43AHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial motor drive I/O protection, and body control module designs requiring stable component supply, AEC-Q101 compliance, and high-temperature operational continuity.
Supply support for TPSMP43AHM3_A/I 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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on automotive, industrial, and computing applications.
The TPSMP43AHM3_A/I belongs to Vishay's eSMP® Series of high-power-density PAR® TVS diodes, engineered specifically for space-constrained, high-reliability transient suppression in automotive electronics and harsh-environment industrial controls.
FAQ
What is the clamping voltage of the TPSMP43AHM3_A/I at its rated peak pulse current?
The TPSMP43AHM3_A/I has a maximum clamping voltage (VC) of 59.3 V when subjected to its rated peak pulse current (IPPM) of 6.7 A under the standard 10/1000 µs waveform. This value is measured at TA = 25 °C with specified PCB mounting conditions (5.0 mm × 5.0 mm copper pads per terminal). The clamping voltage ensures downstream ICs remain within safe operating limits during surge events. TPSMP43AHM3_A/I data is confirmed in Vishay document 88471, Table on page 2.
Is the TPSMP43AHM3_A/I suitable for automotive applications?
Yes, the TPSMP43AHM3_A/I is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood and other demanding automotive environments. It meets MSL Level 1 reflow requirements (260 °C peak), supports automated SMT assembly, and is halogen-free and RoHS-compliant. Its unidirectional architecture and precise VWM/VBR values align with ISO 16750-2 and ISO 7637-2 test criteria. TPSMP43AHM3_A/I is explicitly designated for automotive-grade use in Vishay's official documentation.
What does the "HM3_A/I" suffix indicate in TPSMP43AHM3_A/I?
The "HM3" denotes Vishay's halogen-free, RoHS-compliant, AEC-Q101-qualified SMP package variant; "A" is the revision code; "I" specifies the packaging format - 13-inch diameter plastic tape and reel with 10,000 units per reel. This differs from "H"-suffixed versions (7-inch reel, 3,000 units). The suffix directly maps to ordering information in Vishay document 88471, page 3, confirming tape-and-reel logistics and material compliance for TPSMP43AHM3_A/I.
How does the TPSMP43AHM3_A/I compare to standard SMA-package TVS diodes in terms of board space?
The TPSMP43AHM3_A/I uses the SMP (DO-220AA) package measuring 4.00 mm × 2.18 mm × 1.0 mm, offering ~45 % smaller footprint and ~56 % lower height than DO-214AC (SMA) packages like SMAJ43A. This reduction enables denser routing in modern automotive ECUs and allows placement closer to protected pins with minimal parasitic inductance. TPSMP43AHM3_A/I's compactness is validated in Vishay's package outline drawing (document 88471, page 4).
What is the maximum steady-state power dissipation of the TPSMP43AHM3_A/I?
The TPSMP43AHM3_A/I has a maximum steady-state power dissipation (PD) of 2.5 W at TA = 75 °C on an infinite heatsink. Under typical PCB conditions, derating applies per Figure 6 in Vishay document 88471: at 100 °C ambient, usable PD drops to ~1.7 W. This rating governs continuous leakage-related heating and must be considered alongside transient duty cycle in thermally constrained designs. TPSMP43AHM3_A/I's PD is distinct from its 400 W peak pulse rating, which applies only to short-duration transients.
TPSMP43AHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-220AA
- Series:
- PAR®, eSMP®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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)
TPSMP43AHM3_A/I FAQ
1.How can I place an order for TPSMP43AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP43AHM3_A/I 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 TPSMP43AHM3_A/I reliable?
The price and inventory of TPSMP43AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP43AHM3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMP43AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP43AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP43AHM3_A/I?
TPSMP43AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP43AHM3_A/I 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 TPSMP43AHM3_A/I?
For technical support, including TPSMP43AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP43AHM3_A/I requirements.
6.How does Aetrix verify that TPSMP43AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMP43AHM3_A/I 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 TPSMP43AHM3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMP43AHM3_A/I?
All TPSMP43AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP43AHM3_A/I, 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 TPSMP43AHM3_A/I part is unused and in its original packaging.
Return procedure for TPSMP43AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMP43AHM3_A/I Tags
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