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Vishay General Semiconductor - Diodes Division TPSMA43AHE3_A/I
- Part No.:
- TPSMA43AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA43AHE3_A/I.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,425
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Product details
Overview
TPSMA43AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients up to 59.3 V at 6.7 A peak pulse current, with 400 W peak pulse power (10/1000 μs), 36.8 V stand-off voltage, and 185 °C junction temperature rating - used to protect MOSFETs, sensor signal lines, and ICs in automotive and industrial power rails.
For engineers reviewing the TPSMA43AHE3_A/I datasheet, TPSMA43AHE3_A/I pinout, TPSMA43AHE3_A/I application, or TPSMA43AHE3_A/I equivalent, key selection criteria include clamping voltage (VC = 59.3 V), breakdown voltage range (40.9–45.2 V), unidirectional polarity, AEC-Q101 qualification, and SMA package thermal performance under high-reliability conditions.
Technical Context
The TPSMA43AHE3_A/I operates as a unidirectional PAR® TVS diode using passivated anisotropic rectifier technology, enabling fast response time and low incremental surge resistance. It delivers stable clamping under repetitive 10/1000 μs surges at 0.01% duty cycle, with derating above 25 °C per Fig. 2.
Its 185 °C maximum junction temperature and MSL Level 1 (260 °C peak reflow) support automotive under-hood and industrial high-temperature PCB environments. The device is RoHS-compliant, halogen-free (HE3 suffix), and qualified to AEC-Q101 - verified via JESD22-B102 whisker testing and J-STD-020 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 40.9 V / 43.0 V / 45.2 V - defines precise reverse breakdown threshold at 1 mA test current, critical for accurate overvoltage triggering |
| VWM | 36.8 V - maximum continuous reverse working voltage before leakage exceeds 1 μA, sets safe operating margin below breakdown |
| VC @ IPPM | 59.3 V - clamping voltage at 6.7 A peak pulse, determines maximum stress imposed on protected downstream circuitry |
| PPPM | 400 W - peak pulse power handling capability with 10/1000 μs waveform, defines transient energy absorption capacity |
| TJ max. | +185 °C - enables reliable operation in under-hood automotive and high-ambient industrial environments without thermal derating |
| Polarity | Unidirectional - provides protection only against positive transients relative to cathode, requiring correct orientation in DC power rails |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 5.0 mm × 5.0 mm copper pad thermal interface per JEDEC spec |
Pinout & Package
SMA (DO-214AC) package: molded plastic case with matte tin-plated leads, cathode indicated by color band; dimensions 4.93 mm × 3.99 mm × 2.29 mm (L × W × H), MSL Level 1, 260 °C peak reflow compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction or transient clamping | Connected to lower-potential side of protected line (e.g., ground or return path); must be routed with low-inductance trace |
| Cathode | Current exit terminal during clamping; marked by color band | Connected to higher-potential side (e.g., VIN, signal line); polarity reversal prevents protection function |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics, with extended temperature cycling and humidity testing |
| 185 °C junction rating | Supports uninterrupted operation in high-thermal-load locations such as power converters near heat sinks or under-hood ECUs |
| 400 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 1/2a/5a transients and IEC 61000-4-5 surge events without degradation |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage overshoot during clamping, reducing stress on downstream MOSFET gates and logic inputs |
| MSL Level 1 moisture sensitivity | Enables standard SMT assembly without dry-pack or baking, lowering manufacturing cost and process complexity |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Suppressing load-dump transients (ISO 7637-2 Pulse 5a) on 12 V/24 V battery-fed ECUs and lighting modules. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power rail and chassis ground to clamp spikes up to 120 V. Use Value: Limits voltage seen by downstream LDOs and microcontrollers to ≤59.3 V, preventing latch-up or gate oxide damage. | Use Scenario: Protecting analog output lines (e.g., 4–20 mA current loops) in factory automation sensors exposed to ESD and inductive switching noise. IC Role / Device Role / Timing Role: Fast-response clamping element across signal and return paths to shunt transient energy before it reaches ADC input stages. Use Value: Maintains signal integrity with <1 ns response time and <1 μA leakage at 36.8 V, avoiding measurement drift or offset errors. |
| Consumer Power Adapter Input Stage | Telecom DC Power Distribution |
Use Scenario: Safeguarding primary-side controllers and bridge rectifiers in AC/DC adapters subjected to lightning-induced surges on mains input. IC Role / Device Role / Timing Role: Secondary-side TVS on DC bus (e.g., post-bridge, pre-PFC) to absorb residual transients escaping upstream filtering. Use Value: Absorbs 400 W pulses without failure, enabling compliance with UL 62368-1 surge immunity requirements. | Use Scenario: Protecting -48 V DC distribution boards in telecom central offices from hot-swap transients and relay contact bounce. IC Role / Device Role / Timing Role: Unidirectional clamping device installed between -48 V rail and return, oriented to conduct during negative-going surges. Use Value: Withstands repetitive 10/1000 μs surges at 0.01% duty cycle while maintaining <1 μA leakage at rated VWM. |
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) and VC (69.4 V), but 600 W PPPM and SMB (DO-214AA) package - larger footprint, higher thermal mass | Preferred where higher surge margin is required and board space permits larger package; not drop-in due to different pad layout | Select SMBJ43A when system-level surge testing exceeds 400 W or when thermal dissipation demands larger copper area |
| SMCJ43A | Same VBR (43 V) and VC (69.4 V), but 1500 W PPPM and SMC (DO-214AB) package - significantly larger, higher IPPM (33.5 A) | Used in main power entry protection where full IEC 61000-4-5 Level 4 immunity is required; incompatible SMA footprint | Choose SMCJ43A for front-end AC/DC or PoE injectors needing >1 kW surge handling; requires PCB redesign |
Compared with SMBJ43A and SMCJ43A, the TPSMA43AHE3_A/I offers optimal balance of 400 W surge capability, compact SMA footprint, and AEC-Q101 qualification - making it ideal for space-constrained, high-reliability DC power nodes where 6.7 A peak clamping current suffices.
Availability
TPSMA43AHE3_A/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface design, and telecom DC distribution systems requiring stable component supply, AEC-Q101 compliance, and high-temperature reliability.
Supply support for TPSMA43AHE3_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, TVS devices, and optoelectronics with emphasis on high-reliability, high-temperature, and automotive-grade performance.
The TPSMAxxA family was engineered specifically for robust transient suppression in harsh environments - delivering AEC-Q101-qualified unidirectional TVS performance in the compact SMA package for space- and thermal-sensitive designs.
FAQ
What is the clamping voltage of the TPSMA43AHE3_A/I and how is it measured?
The TPSMA43AHE3_A/I has a maximum clamping voltage (VC) of 59.3 V, measured at 6.7 A peak pulse current (IPPM) using a 10/1000 μs waveform per IEC 61000-4-5. This value represents the upper voltage limit imposed on protected circuitry during transient events and is guaranteed across the full operating temperature range.
Is the TPSMA43AHE3_A/I suitable for automotive applications?
Yes, the TPSMA43AHE3_A/I is AEC-Q101 qualified and rated for TJ = –65 °C to +185 °C, making it suitable for under-hood and powertrain applications. Its HE3 suffix confirms RoHS compliance, halogen-free construction, and JESD22-B102 whisker resistance - all validated per automotive reliability standards.
What does the "HE3_A/I" suffix indicate in TPSMA43AHE3_A/I?
The "HE3" denotes RoHS-compliant, halogen-free, and AEC-Q101-qualified construction; "A" is the revision code; "I" specifies packaging in 13-inch tape-and-reel format with 7500 units per reel. This distinguishes it from "H" (7-inch reel, 1800 units) and "HM3" (alternative halogen-free variant).
How does the TPSMA43AHE3_A/I compare to bidirectional TVS diodes?
The TPSMA43AHE3_A/I is unidirectional only, meaning it protects against positive transients relative to its cathode. Unlike bidirectional variants, it cannot suppress symmetrical AC surges - but offers lower leakage (<1 μA at VWM) and tighter VBR tolerance, making it preferred for DC power rail applications.
What is the thermal performance of the TPSMA43AHE3_A/I on standard PCB pads?
When mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per datasheet Fig. 2, the TPSMA43AHE3_A/I maintains full 400 W pulse rating at 25 °C ambient. Derating begins above 25 °C, reaching ~50% power capability at 125 °C junction temperature - consistent with its 185 °C TJmax rating.
TPSMA43AHE3_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):
- 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_A/I FAQ
1.How can I place an order for TPSMA43AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA43AHE3_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 TPSMA43AHE3_A/I reliable?
The price and inventory of TPSMA43AHE3_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 TPSMA43AHE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMA43AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA43AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA43AHE3_A/I?
TPSMA43AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA43AHE3_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 TPSMA43AHE3_A/I?
For technical support, including TPSMA43AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA43AHE3_A/I requirements.
6.How does Aetrix verify that TPSMA43AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMA43AHE3_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 TPSMA43AHE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMA43AHE3_A/I?
All TPSMA43AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA43AHE3_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 TPSMA43AHE3_A/I part is unused and in its original packaging.
Return procedure for TPSMA43AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA43AHE3_A/I Tags
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