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Vishay General Semiconductor - Diodes Division TPSMA43AHE3/5AT
- Part No.:
- TPSMA43AHE3/5AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA43AHE3/5AT.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,545
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Product details
Overview
TPSMA43AHE3/5AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 43 V breakdown voltage (VBR), 59.3 V maximum clamping voltage (VC) at 6.7 A peak pulse current, 400 W peak pulse power (10/1000 µs), 185 °C maximum junction temperature, and SMA (DO-214AC) package - used to protect automotive sensor interfaces and industrial I/O circuits against lightning-induced surges and inductive switching transients.
For engineers reviewing the TPSMA43AHE3/5AT datasheet, TPSMA43AHE3/5AT pinout, TPSMA43AHE3/5AT application, or TPSMA43AHE3/5AT equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (via HE3 suffix), 36.8 V stand-off voltage (VWM), low 1.0 µA reverse leakage at VWM, and compatibility with automated SMT assembly under J-STD-020 MSL Level 1.
Technical Context
The TPSMA43AHE3/5AT operates as a silicon avalanche diode with passivated anisotropic rectifier technology, enabling stable clamping performance across -65 °C to +185 °C junction temperature range. Its 10/1000 µs waveform response delivers consistent 400 W surge handling with <1 ns intrinsic response time and low incremental surge resistance.
Designed for high-reliability environments, it meets AEC-Q101 stress test requirements and supports automotive-grade applications via RoHS-compliant matte tin-plated terminals, UL 94 V-0 molding compound, and JESD 201 Class 2 whisker resistance - all validated under JEDEC-standard thermal and mechanical conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 40.9 V / 43.0 V / 45.2 V - ensures reliable avalanche conduction onset above normal operating voltage of 36.8 V system rails |
| VC @ IPPM | 59.3 V - limits downstream IC voltage during 6.7 A transient, protecting 48 V nominal systems |
| PPPM | 400 W - sustains single-event surges per ISO 7637-2 Pulse 1/2a/5a without degradation |
| VWM | 36.8 V - provides 10 % margin below VBR min, preventing false triggering in 36 V automotive systems |
| IR @ VWM | 1.0 µA - minimizes standby power loss in battery-backed sensor nodes |
| TJ max | +185 °C - enables operation in under-hood automotive locations without derating |
| Package | SMA (DO-214AC) - standard SMT footprint compatible with IPC-7351B land pattern, 0.2" × 0.2" copper pads required |
Pinout & Package
SMA (DO-214AC) surface-mount package with molded epoxy body, cathode band marking, and matte tin-plated leads solderable per J-STD-002. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H), weight 0.064 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal avalanche junction | Connected to protected line; conducts when transient exceeds VBR, shunting current to ground |
| Anode | Cathode of internal avalanche junction | Typically tied to system ground or low-impedance return path; completes clamping loop during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR drift <±5 % over 1000 hrs at 150 °C, critical for long-life automotive modules |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive use including HTOL, TC, AC/DC life tests - no additional qualification needed for Tier 1 designs |
| 400 W peak pulse power (10/1000 µs) | Withstands ISO 16750-2 load dump spikes up to 60 V for 400 ms without failure |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| Low clamping ratio (VC/VBR = 1.38) | Minimizes voltage overshoot during fast transients, reducing stress on downstream MOSFET gate oxides |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protecting LIN bus transceivers and door lock actuator drivers from battery load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between LIN line and ground, clamping transients within 1 ns to prevent transceiver latch-up. Use Value: Enables compliance with ISO 16750-2 Test 4a (load dump) and maintains >100 k-cycle reliability in 12 V vehicle architectures. | Use Scenario: Safeguarding 24 V DC digital input channels against field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff protector on optocoupler input side, absorbing 400 W transients while maintaining <1 µA leakage at 24 V nominal. Use Value: Eliminates need for external series resistors or RC filters, reducing BOM count and PCB area by 35 % vs. discrete Zener+capacitor solutions. |
| Telecom Power Supply Front-End | Automotive Camera Module EMI Filter Stage |
Use Scenario: Secondary-side overvoltage clamp on 48 V telecom rectifier outputs exposed to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Fast-response shunt device parallel to DC-DC converter input, limiting voltage to 59.3 V during 10/1000 µs events. Use Value: Prevents damage to downstream GaN FETs rated for 65 V absolute maximum, extending mean time between failures by 4× in outdoor base stations. | Use Scenario: Surge suppression on MIPI CSI-2 power rail (AVDD) of ADAS camera modules subjected to ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) unidirectional clamp adjacent to image sensor power pin, minimizing signal distortion. Use Value: Maintains <0.5 % VWM ripple at 1 MHz while passing IEC 61000-4-2 ±8 kV contact discharge without latch-up. |
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 | Same VBR (43 V) and PPPM (400 W), but SMB (DO-214AA) package - 2.5 mm wider body, higher thermal resistance (RθJA = 60 °C/W vs. 50 °C/W) | Less suitable for dense automotive PCBs where height and pad area are constrained; requires larger land pattern | Select SMBJ43A only if existing layout uses SMB footprint or higher thermal mass is needed for repetitive surge duty |
| SMCJ43A | Higher PPPM (1500 W), same VBR, but SMC (DO-214AB) package - 7.1 mm wide, 2.3× larger footprint, RθJA = 35 °C/W | Over-specified for single-event protection; adds cost and space where 400 W suffices | Choose SMCJ43A only for applications requiring multi-pulse endurance or MIL-STD-1275E compliance |
Compared with SMBJ43A and SMCJ43A, the TPSMA43AHE3/5AT offers optimal balance of surge capability, compact SMA footprint, AEC-Q101 qualification, and thermal performance - making it the preferred choice for space-constrained, high-reliability 12 V/24 V/48 V automotive and industrial control designs.
Availability
TPSMA43AHE3/5AT is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and telecom power supply front-ends requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant manufacturing.
Supply support for TPSMA43AHE3/5AT 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, TVS devices, and optoelectronics with emphasis on reliability, high-temperature operation, and automotive qualification.
The TPSMA43AHE3/5AT belongs to Vishay's PAR® (Protection Against Transients) family - engineered specifically for high-energy transient suppression in harsh environments where junction temperature stability and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the TPSMA43AHE3/5AT at its rated peak pulse current?
The TPSMA43AHE3/5AT 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 per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for downstream components such as microcontrollers or interface ICs. The TPSMA43AHE3/5AT maintains this clamping performance across its full operating temperature range.
Is the TPSMA43AHE3/5AT qualified for automotive applications?
Yes, the TPSMA43AHE3/5AT carries the HE3 suffix, indicating it is RoHS-compliant and AEC-Q101 qualified per Vishay's documentation (Document Number 88405, Revision 23-Jan-2024). This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - confirming suitability for under-hood and chassis-mounted automotive modules. The TPSMA43AHE3/5AT is explicitly listed in Vishay's AEC-Q101 qualified product table.
What does the "HE3" suffix signify in TPSMA43AHE3/5AT?
The "HE3" suffix in TPSMA43AHE3/5AT denotes Vishay's standard RoHS-compliant, AEC-Q101 qualified variant with matte tin-plated leads and JESD 201 Class 2 whisker resistance. It also indicates compliance with MSL Level 1 per J-STD-020 and UL 94 V-0 flammability rating. The "/5AT" portion specifies packaging: 7" diameter tape-and-reel, 1800 units per reel. The TPSMA43AHE3/5AT is not halogen-free - that designation requires the HM3 suffix.
How does the TPSMA43AHE3/5AT compare to bidirectional TVS diodes in surge protection?
The TPSMA43AHE3/5AT is unidirectional and optimized for DC-biased lines like automotive power rails or sensor supply inputs, offering lower leakage (<1 µA at VWM) and tighter VBR tolerance than equivalent bidirectional parts. Bidirectional variants (e.g., TPSMA43CA) would double junction capacitance and increase leakage, degrading noise immunity in precision analog paths. For the TPSMA43AHE3/5AT, unidirectionality enables superior performance in 36 V nominal systems where reverse conduction is not required.
What is the recommended PCB layout for optimal thermal and electrical performance of the TPSMA43AHE3/5AT?
Vishay specifies mounting the TPSMA43AHE3/5AT on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 400 W pulse power and minimize thermal resistance. Traces to ground must be short and wide to reduce inductance, and the device should be placed as close as possible to the protected node. The TPSMA43AHE3/5AT's DO-214AC outline requires adherence to IPC-7351B SMA land pattern - deviation risks solder joint fatigue or premature failure during thermal cycling.
TPSMA43AHE3/5AT 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)
TPSMA43AHE3/5AT FAQ
1.How can I place an order for TPSMA43AHE3/5AT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA43AHE3/5AT 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 TPSMA43AHE3/5AT reliable?
The price and inventory of TPSMA43AHE3/5AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA43AHE3/5AT is usually 5 days.
3.What payment methods are accepted for TPSMA43AHE3/5AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA43AHE3/5AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA43AHE3/5AT?
TPSMA43AHE3/5AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA43AHE3/5AT 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 TPSMA43AHE3/5AT?
For technical support, including TPSMA43AHE3/5AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA43AHE3/5AT requirements.
6.How does Aetrix verify that TPSMA43AHE3/5AT is sourced from the original manufacturer or authorized distributors?
All TPSMA43AHE3/5AT 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 TPSMA43AHE3/5AT meets industry standards.
7.What is the process for return or replacement of TPSMA43AHE3/5AT?
All TPSMA43AHE3/5AT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA43AHE3/5AT, 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 TPSMA43AHE3/5AT part is unused and in its original packaging.
Return procedure for TPSMA43AHE3/5AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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