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Vishay General Semiconductor - Diodes Division TPSMA43AHE3/61T
- Part No.:
- TPSMA43AHE3/61T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA43AHE3/61T.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,376
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Product details
Overview
TPSMA43AHE3/61T 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), 59.3 V clamping voltage (VC) at 6.7 A peak pulse current, and 400 W peak pulse power with 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 TPSMA43AHE3/61T datasheet, TPSMA43AHE3/61T pinout, TPSMA43AHE3/61T application, or TPSMA43AHE3/61T equivalent, key selection criteria include unidirectional polarity, 36.8 V stand-off voltage (VWM), low 1.0 µA reverse leakage at VWM, and compatibility with high-reliability PCB layouts using 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for junction stability under repetitive surge stress. Its 10/1000 µs waveform response delivers consistent clamping performance across -65 °C to +185 °C operating range, with thermal derating per Figure 2 of Vishay Document 88405.
The device exhibits low incremental surge resistance and fast response time-critical for protecting MOSFETs and ICs against inductive switching transients and lightning-induced surges. Its MSL Level 1 rating and matte tin-plated leads ensure robust solderability per J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 40.9 V / 43.0 V / 45.2 V - ensures reliable conduction onset above system operating voltage |
| VWM | 36.8 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 59.3 V - clamps transient spikes to safe levels for downstream 48 V-rated components |
| PPPM | 400 W - handles high-energy surges without failure under 10/1000 µs test condition |
| TJ max. | +185 °C - supports under-hood automotive and industrial environments with minimal derating |
| Polarity | Unidirectional - protects against positive-going transients only; cathode marked by band |
| Package | SMA (DO-214AC) - standardized surface-mount footprint with 5.28 mm length and 4.50 mm width |
Pinout & Package
SMA (DO-214AC) package with axial lead configuration: two terminals, cathode identified by color band. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per Vishay specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VBR exceeded |
| Anode | Reference node | Typically tied to system ground; completes clamping path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier design improves long-term reliability under thermal cycling |
| AEC-Q101 qualification | Validated for automotive-grade use including engine control units and ADAS sensor interfaces |
| MSL Level 1 | Reflow-compatible up to 260 °C peak without preconditioning or dry-pack requirements |
| Low clamping ratio (VC/VBR) | 1.38 - minimizes overvoltage stress on protected ICs during surge events |
| High IFSM | 40 A - withstands 8.3 ms half-sine surge without bond wire failure |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V power rails in body control modules from load dump and alternator transients. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between power input and DC-DC converter input stage. Use Value: Clamps 100 V+ load dump spikes to ≤59.3 V, preventing damage to downstream regulators and microcontrollers. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed across differential signal pair near connector entry point. Use Value: Limits induced transients to sub-60 V levels within nanoseconds, preserving signal integrity and ADC accuracy. |
| Telecom Equipment Surge Suppression | Consumer Device USB Port Protection |
Use Scenario: Safeguarding PoE-powered Ethernet ports in network switches against lightning-induced surges on data lines. IC Role / Device Role / Timing Role: TVS array component protecting isolated PHY interface with common-mode suppression capability. Use Value: Absorbs 400 W surge energy while maintaining <1.0 µA leakage at 36.8 V, ensuring low standby power loss. | Use Scenario: Adding secondary-level surge immunity to USB-C power delivery circuits in portable audio devices. IC Role / Device Role / Timing Role: Standalone unidirectional clamp on VBUS line upstream of USB PD controller. Use Value: Enables compliance with IEC 61000-4-5 Level 3 (1 kV/2 kV) without increasing board area beyond standard SMA footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A | Same VBR (43 V), higher PPPM = 600 W, larger SMB (DO-214AA) package | Requires larger PCB pad layout; better suited for higher-energy surge environments | Select when system-level surge testing exceeds IEC 61000-4-5 Level 4 and space allows SMB footprint |
| SMCJ43A | Same VBR, PPPM = 1500 W, SMC (DO-214AB) package with 7.11 mm width | Not suitable for space-constrained designs; used where peak current >10 A is expected | Choose for industrial motor drives or EV charging interfaces needing >10 A IPPM handling |
Compared with SMBJ43A and SMCJ43A, the TPSMA43AHE3/61T offers optimal balance of 400 W surge capacity, compact SMA footprint, and AEC-Q101 qualification-making it ideal for automotive and high-density industrial PCBs where thermal margin and qualification compliance are prioritized over raw power rating.
Availability
TPSMA43AHE3/61T is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom surge protection, and consumer USB power delivery requiring stable component supply and AEC-Q101 traceability.
Supply support for TPSMA43AHE3/61T 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, and protection devices with emphasis on reliability, thermal performance, and automotive qualification.
The TPSMA series belongs to Vishay's PAR® (Protection and Regulation) transient voltage suppressor family, engineered specifically for high-temperature, high-reliability applications in automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of the TPSMA43AHE3/61T at its rated peak pulse current?
The TPSMA43AHE3/61T has a maximum clamping voltage (VC) of 59.3 V at 6.7 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per Vishay Document 88405 and defines the upper voltage limit imposed on protected circuitry during surge events. The TPSMA43AHE3/61T maintains this clamping performance across its full operating temperature range, supporting robust design margins for 48 V system interfaces.
Is the TPSMA43AHE3/61T suitable for automotive applications?
Yes, the TPSMA43AHE3/61T is AEC-Q101 qualified and carries the HE3 suffix indicating RoHS-compliance and automotive-grade reliability. Its +185 °C maximum junction temperature, MSL Level 1 rating, and validated performance under thermal cycling make it suitable for engine control units, ADAS sensors, and infotainment power supplies. The TPSMA43AHE3/61T meets automotive surge immunity requirements per ISO 7637-2 and IEC 61000-4-5 when applied per Vishay's recommended layout guidelines.
What does the "HE3" suffix indicate in TPSMA43AHE3/61T?
The "HE3" suffix in TPSMA43AHE3/61T denotes Vishay's RoHS-compliant, AEC-Q101 qualified variant with matte tin-plated leads and JESD 201 Class 2 whisker resistance. The "61T" denotes tape-and-reel packaging in 7-inch diameter reels with 1800 units per reel. This ordering code ensures traceability, automotive qualification, and compatibility with standard SMT assembly processes without preconditioning.
How does the TPSMA43AHE3/61T compare to bidirectional TVS diodes?
The TPSMA43AHE3/61T is unidirectional and designed exclusively for suppressing positive-going transients on DC-biased lines. Unlike bidirectional variants, it provides lower capacitance and tighter VBR tolerance but cannot protect AC or dual-polarity signals. For 12 V/24 V automotive power rails or USB VBUS lines, the TPSMA43AHE3/61T delivers superior clamping efficiency and leakage performance compared to bidirectional equivalents with same VBR.
What PCB layout guidance applies to the TPSMA43AHE3/61T for optimal surge performance?
Vishay specifies mounting the TPSMA43AHE3/61T on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 400 W pulse power. Short, low-inductance traces to ground are essential-trace length should be minimized to reduce voltage overshoot during fast transients. The TPSMA43AHE3/61T must be placed as close as possible to the protected connector or IC input, with no vias or splits in the ground return path to maintain effective clamping.
TPSMA43AHE3/61T 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):
- 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-214AC (SMA)
TPSMA43AHE3/61T FAQ
1.How can I place an order for TPSMA43AHE3/61T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA43AHE3/61T 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 TPSMA43AHE3/61T reliable?
The price and inventory of TPSMA43AHE3/61T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA43AHE3/61T is usually 5 days.
3.What payment methods are accepted for TPSMA43AHE3/61T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA43AHE3/61T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA43AHE3/61T?
TPSMA43AHE3/61T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA43AHE3/61T 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 TPSMA43AHE3/61T?
For technical support, including TPSMA43AHE3/61T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA43AHE3/61T requirements.
6.How does Aetrix verify that TPSMA43AHE3/61T is sourced from the original manufacturer or authorized distributors?
All TPSMA43AHE3/61T 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 TPSMA43AHE3/61T meets industry standards.
7.What is the process for return or replacement of TPSMA43AHE3/61T?
All TPSMA43AHE3/61T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA43AHE3/61T, 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 TPSMA43AHE3/61T part is unused and in its original packaging.
Return procedure for TPSMA43AHE3/61T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA43AHE3/61T Tags
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