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Vishay General Semiconductor - Diodes Division TPSMA43AHE3_B/H
- Part No.:
- TPSMA43AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA43AHE3_B/H.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,231
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Product details
Overview
TPSMA43AHE3_B/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for clamping inductive switching and lightning-induced transients on 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), and operates up to +185 °C junction temperature - deployed in automotive sensor protection and industrial I/O interface circuits.
For engineers reviewing the TPSMA43AHE3_B/H datasheet, TPSMA43AHE3_B/H pinout, TPSMA43AHE3_B/H application, or TPSMA43AHE3_B/H equivalent, key selection criteria include unidirectional polarity, SMA (DO-214AC) package compatibility, AEC-Q101 qualification status, TJ = 185 °C thermal rating, and clamping performance under 10/1000 µs surge conditions.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping with low incremental surge resistance and excellent response time (<1 ns). Its unidirectional architecture provides forward conduction only during overvoltage events, enabling robust protection of MOSFET gates and IC power rails without interfering with normal DC bias paths.
Rated for 400 W peak pulse power per 10/1000 µs waveform and 40 A non-repetitive forward surge current (8.3 ms half-sine), the device supports high-reliability operation in automotive and industrial environments where thermal derating above 25 °C must be applied per Figure 2 of the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 40.9 V / 43.0 V / 45.2 V - defines minimum voltage at which clamping initiates reliably under 1 mA test current |
| VWM | 36.8 V - maximum continuous reverse working voltage before leakage exceeds 1 µA at 150 °C |
| VC @ IPPM | 59.3 V at 6.7 A - clamping voltage seen by protected circuit during full-rated 400 W transient |
| PPPM | 400 W - peak surge power handling capability with standard 10/1000 µs waveform |
| TJ max. | +185 °C - enables use in under-hood automotive modules and high-temperature industrial enclosures |
| Polarity | Unidirectional - blocks reverse voltage until breakdown, conducts forward during overvoltage |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with cathode band marking |
Pinout & Package
TPSMA43AHE3_B/H is housed in an SMA (DO-214AC) package with two terminals: cathode (marked by color band) and anode. The package meets UL 94 V-0 flammability rating and JEDEC MSL Level 1 (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient voltage reference node | Connected to protected line; conducts when line voltage exceeds VBR relative to anode |
| Anode | Ground or return path | Typically tied to system ground or low-impedance return plane to sink surge current |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR drift < ±5 % over lifetime and temperature cycling |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability including HTOL, TC, and HTRB testing |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a) |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard SMT reflow without baking preconditioning |
| Matte tin-plated leads | Ensures solderability per J-STD-002 and whisker resistance per JESD 201 Class 2 |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between signal line and chassis ground to limit transient voltage to safe levels. Use Value: Clamps 400 W surges at ≤59.3 V while maintaining <1 µA leakage at 36.8 V, preserving signal integrity and ADC accuracy. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Standoff protection element across 24 V DC input terminals to absorb repetitive inductive spikes. Use Value: Withstands 40 A surge current (8.3 ms) and operates continuously at +185 °C ambient, supporting fanless enclosure designs. |
| Consumer Power Adapter Surge Suppression | Telecom Line Interface Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters for USB-C PD and smart home hubs. IC Role / Device Role / Timing Role: Fast-response clamping diode on 5–20 V output rails to prevent damage during output short-circuit recovery. Use Value: Responds in <1 ns and clamps 10/1000 µs transients to 59.3 V, protecting downstream USB PD controllers and FETs. | Use Scenario: Primary protection for Ethernet PHY interfaces and DSL line drivers against lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Unidirectional standoff device on differential pair supply rails to suppress asymmetrical transients. Use Value: Maintains 36.8 V working voltage margin while delivering 400 W pulse handling - compatible with GR-1089-CORE Level 3 requirements. |
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 (Bourns) | Same VBR (43 V), but SMB package (DO-214AA); 600 W PPPM; higher VC = 69.4 V | Higher clamping voltage reduces protection margin for 3.3 V/5 V logic; larger footprint may impact layout density | Select when higher pulse power is required and board space allows SMB footprint |
| 1.5KE43A (ON Semiconductor) | Through-hole DO-201 package; same VBR/VC specs; 1500 W PPPM; not AEC-Q101 qualified | Not suitable for automated SMT assembly or automotive under-hood use due to leaded package and qualification gap | Choose for legacy through-hole designs or cost-sensitive industrial power supplies without automotive compliance needs |
Compared with SMBJ43A and 1.5KE43A, TPSMA43AHE3_B/H offers optimal balance of AEC-Q101 qualification, compact SMA footprint, and precise 59.3 V clamping - making it preferred for new SMT-based automotive and industrial designs requiring validated reliability and space efficiency.
Availability
TPSMA43AHE3_B/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface boards requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant transient protection.
Supply support for TPSMA43AHE3_B/H 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 and automotive-grade solutions.
The TPSMA series belongs to Vishay's PAR® (Protected Anisotropic Rectifier) TVS platform, engineered specifically for high-temperature, high-surge environments in automotive powertrain, body electronics, and industrial control systems.
FAQ
What is the maximum clamping voltage of the TPSMA43AHE3_B/H under rated surge conditions?
The TPSMA43AHE3_B/H has a maximum clamping voltage (VC) of 59.3 V when subjected to its rated 6.7 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is measured per Figure 3 in the datasheet and ensures protected circuits remain below critical voltage thresholds during transient events. The TPSMA43AHE3_B/H maintains this clamping performance across its full operating temperature range.
Is the TPSMA43AHE3_B/H qualified for automotive applications?
Yes, the TPSMA43AHE3_B/H carries the HE3 suffix, indicating it is RoHS-compliant and AEC-Q101 qualified. It has undergone stress testing including high-temperature operating life (HTOL), temperature cycling (TC), and high-temperature reverse bias (HTRB) per the AEC-Q101 standard. This makes the TPSMA43AHE3_B/H suitable for automotive body electronics, infotainment, and ADAS sensor modules where reliability under thermal and electrical stress is mandatory.
What does the "B/H" suffix mean in TPSMA43AHE3_B/H?
The "B/H" suffix in TPSMA43AHE3_B/H denotes packaging configuration: "B" indicates tape-and-reel packaging per Vishay's revision coding, and "H" specifies a 7-inch diameter reel containing 1800 units. This format is optimized for high-volume SMT placement equipment and aligns with IPC-7351 standards for SMA (DO-214AC) footprint compatibility. The TPSMA43AHE3_B/H is fully compatible with standard pick-and-place workflows.
How does the TPSMA43AHE3_B/H compare to bidirectional TVS diodes in surge protection?
The TPSMA43AHE3_B/H is unidirectional, meaning it clamps only reverse-polarity transients and conducts forward during overvoltage - ideal for DC-biased lines like power rails or single-ended signals. Bidirectional variants (e.g., TPSMA43CA) would conduct on both polarities, potentially disrupting normal DC operation. For applications with defined polarity and ground-referenced surges, the TPSMA43AHE3_B/H provides tighter clamping and lower leakage than equivalent bidirectional parts.
What is the thermal derating behavior of the TPSMA43AHE3_B/H above 25 °C ambient?
The TPSMA43AHE3_B/H follows the derating curve in Figure 2 of the datasheet: peak pulse power decreases linearly from 400 W at 25 °C to zero at +185 °C junction temperature. At 100 °C ambient (assuming typical PCB thermal resistance), usable PPPM drops to ~240 W. Designers must calculate actual TJ using θJA and ensure transient energy remains within the derated safety area - a key consideration for the TPSMA43AHE3_B/H in enclosed industrial enclosures.
TPSMA43AHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- PAR®
- 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-214AC (SMA)
TPSMA43AHE3_B/H FAQ
1.How can I place an order for TPSMA43AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA43AHE3_B/H 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_B/H reliable?
The price and inventory of TPSMA43AHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA43AHE3_B/H is usually 5 days.
3.What payment methods are accepted for TPSMA43AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA43AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA43AHE3_B/H?
TPSMA43AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA43AHE3_B/H 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_B/H?
For technical support, including TPSMA43AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA43AHE3_B/H requirements.
6.How does Aetrix verify that TPSMA43AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMA43AHE3_B/H 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_B/H meets industry standards.
7.What is the process for return or replacement of TPSMA43AHE3_B/H?
All TPSMA43AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA43AHE3_B/H, 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_B/H part is unused and in its original packaging.
Return procedure for TPSMA43AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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