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Vishay General Semiconductor - Diodes Division TPSMA43HE3_A/I
- Part No.:
- TPSMA43HE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA43HE3_A/I.pdf
- Description:
- TVS DIODE 34.8VWM 61.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,629
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Product details
Overview
TPSMA43HE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, rated for 43 V breakdown voltage (VBR = 40.9–45.2 V at 1.0 mA), 59.3 V clamping voltage (VC) at 6.7 A peak pulse current, and 400 W peak pulse power (10/1000 μs waveform). It operates up to +185 °C junction temperature and is AEC-Q101 qualified for automotive electronics protection.
For engineers reviewing the TPSMA43HE3_A/I datasheet, TPSMA43HE3_A/I pinout, TPSMA43HE3_A/I application, or TPSMA43HE3_A/I equivalent, this device is selected for high-reliability overvoltage protection on power rails and signal lines where fast response (<1 ns), low clamping ratio (1.38), and robust surge handling (40 A IFSM) are required in automotive, industrial, and telecom systems.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology with optimized junction passivation for stable performance under high-temperature stress (TJ = 185 °C). Its unidirectional polarity enables DC rail protection without reverse conduction during normal operation.
It delivers 400 W peak pulse power per 10/1000 μs waveform with 0.01 % duty cycle, and exhibits low incremental surge resistance for tight clamping-VC = 59.3 V at IPPM = 6.7 A, resulting in a clamping ratio of 1.38 relative to nominal VBR = 43 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 40.9 / 43.0 / 45.2 V at 1.0 mA - defines precise voltage threshold for avalanche conduction onset |
| VWM | 36.8 V - maximum continuous reverse working voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 59.3 V at 6.7 A - clamped voltage during 10/1000 μs surge, limiting downstream IC stress |
| PPPM | 400 W - peak transient energy absorption capability under standardized surge waveform |
| TJ max. | +185 °C - enables use in under-hood automotive environments and high-power industrial enclosures |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 0.208" x 0.157" footprint and MSL Level 1 rating |
Pinout & Package
SMA (DO-214AC) package: molded plastic case with matte tin-plated leads, cathode indicated by color band; meets UL 94 V-0, J-STD-002 solderability, and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal PN junction | Connected to protected line (e.g., +12 V rail); conducts when transient exceeds VBR |
| Anode | Cathode of internal PN junction | Typically tied to ground or lower-potential reference; completes clamping path during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 185 °C junction rating | Enables deployment in high-ambient environments (e.g., engine control units, motor drives) without derating |
| 400 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V systems with margin |
| Low clamping ratio (1.38) | Minimizes voltage overshoot across protected ICs, reducing risk of latch-up or gate oxide damage |
| AEC-Q101 qualification (HE3 suffix) | Confirms compliance with automotive stress tests including HTGB, H3TRB, and temperature cycling |
| MSL Level 1 (260 °C peak) | Allows standard SMT reflow without moisture sensitivity concerns or baking requirements |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 12 V/24 V supply inputs in body control modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 36.8 V. Use Value: Limits transient voltage to ≤59.3 V at 6.7 A, safeguarding downstream PMICs and microcontrollers rated for 40 V absolute max. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and inductive switching noise in factory automation. IC Role / Device Role / Timing Role: Low-capacitance TVS connected between signal line and ground, leveraging fast <1 ns response. Use Value: Prevents sensor output corruption and ADC saturation during 8 kV contact ESD events per IEC 61000-4-2. |
| Telecom DC Power Interface | Consumer Device USB Port Protection |
Use Scenario: Securing -48 V DC input ports in base station power supplies against lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS configured with cathode to -48 V rail and anode to ground reference. Use Value: Absorbs 400 W pulses while maintaining VC ≤59.3 V, ensuring upstream rectifiers and filters remain within SOA. |
Use Scenario: Adding secondary overvoltage protection on VBUS lines of USB-C ports in laptops and docking stations. IC Role / Device Role / Timing Role: Standby clamping device activated only during overvoltage faults, not during normal 5 V operation. Use Value: Blocks >36.8 V transients (e.g., hot-swap misconnects) before they reach USB PD controllers, preventing permanent damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A (ON Semiconductor) | Same VBR range (40.9–45.2 V), but SMB package (DO-214AA); 600 W PPPM, higher IPPM (10.3 A) | Larger footprint (0.236" × 0.157") vs. SMA (0.208" × 0.157"); less board space efficient | Select when higher surge margin is needed and PCB layout allows larger package |
| 1.5SMC43A (Littelfuse) | Same electrical specs (VBR, VC, PPPM), SMC (DO-214AB) package; 1.5 kW rating, 23.5 A IPPM | Thicker profile (2.6 mm vs. SMA's 2.3 mm); requires different pad layout and thermal relief | Choose for legacy designs using SMC or where higher single-pulse robustness is critical |
Compared with TPSMA43HE3_A/I, SMBJ43A offers higher surge capacity in a slightly larger package, while 1.5SMC43A provides greater pulse current handling in a taller, thermally superior SMC outline-both require PCB redesign and do not offer drop-in replacement capability.
Availability
TPSMA43HE3_A/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, and telecom power supplies requiring stable component supply with AEC-Q101 validation and high-temperature operation.
Supply support for TPSMA43HE3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and high-temperature performance.
The TPSMA43HE3_A/I belongs to Vishay's PAR® series of transient voltage suppressors, engineered specifically for automotive and industrial applications demanding AEC-Q101 qualification, 185 °C operation, and consistent clamping under repetitive surge stress.
FAQ
What is the breakdown voltage tolerance for TPSMA43HE3_A/I?
The TPSMA43HE3_A/I has a specified breakdown voltage range of 40.9 V to 45.2 V at 1.0 mA test current, corresponding to ±5 % tolerance around the nominal 43 V rating. This tolerance is measured per ANSI/IEEE C62.35 and confirmed under standard test conditions (TA = 25 °C). The TPSMA43HE3_A/I datasheet specifies this range in its Electrical Characteristics table, with no derating applied at elevated temperatures unless using the provided αT coefficient (0.092 %/°C).
Is TPSMA43HE3_A/I suitable for bidirectional transient protection?
No, TPSMA43HE3_A/I is unidirectional only, as explicitly stated in the Vishay datasheet under FEATURES. It protects against positive transients on a DC line referenced to ground and cannot suppress negative-going surges. For bidirectional protection, a separate device such as the TPSMA43CA (center-tapped, bidirectional variant) or dual-diode configuration would be required. The TPSMA43HE3_A/I polarity is marked by a cathode band and must be oriented with cathode toward the protected line.
What is the maximum clamping voltage of TPSMA43HE3_A/I at its rated peak pulse current?
The maximum clamping voltage of TPSMA43HE3_A/I is 59.3 V at 6.7 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 5 in the datasheet and represents the upper limit of voltage seen by downstream circuitry during worst-case surge events. The TPSMA43HE3_A/I maintains this clamping performance across its full operating temperature range when mounted per the recommended 0.2" × 0.2" copper pad layout.
Does TPSMA43HE3_A/I meet RoHS and halogen-free requirements?
Yes, the HE3 suffix in TPSMA43HE3_A/I indicates RoHS-compliant construction and AEC-Q101 qualification. While it is RoHS-compliant, it is not halogen-free; that designation applies only to HM3-suffixed variants (e.g., TPSMA43AHM3_A/I). The TPSMA43HE3_A/I uses standard molding compound meeting UL 94 V-0 and matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
What is the surge current rating for TPSMA43HE3_A/I under 8.3 ms half-sine conditions?
The TPSMA43HE3_A/I has a non-repetitive peak forward surge current (IFSM) rating of 40 A under 8.3 ms single half-sine-wave conditions, as defined in the Maximum Ratings table. This rating assumes mounting on minimum recommended pad layout and is valid up to TA = 25 °C; derating applies above that ambient temperature per Figure 2. The TPSMA43HE3_A/I withstands this surge without parametric shift or catastrophic failure when used within datasheet limits.
TPSMA43HE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 34.8V
- Voltage - Breakdown (Min):
- 38.7V
- Voltage - Clamping (Max) @ Ipp:
- 61.9V
- Current - Peak Pulse (10/1000µs):
- 6.5A
- 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-214AC (SMA)
TPSMA43HE3_A/I FAQ
1.How can I place an order for TPSMA43HE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA43HE3_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 TPSMA43HE3_A/I reliable?
The price and inventory of TPSMA43HE3_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 TPSMA43HE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMA43HE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA43HE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA43HE3_A/I?
TPSMA43HE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA43HE3_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 TPSMA43HE3_A/I?
For technical support, including TPSMA43HE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA43HE3_A/I requirements.
6.How does Aetrix verify that TPSMA43HE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMA43HE3_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 TPSMA43HE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMA43HE3_A/I?
All TPSMA43HE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA43HE3_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 TPSMA43HE3_A/I part is unused and in its original packaging.
Return procedure for TPSMA43HE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA43HE3_A/I Tags
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