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Vishay General Semiconductor - Diodes Division TPSMC43AHE3_A/I
- Part No.:
- TPSMC43AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC43AHE3_A/I.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,688
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Product details
Overview
TPSMC43AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge clamping on power and signal lines. It features 43.0 V nominal breakdown voltage (VBR), 36.8 V stand-off voltage (VWM), 59.3 V maximum clamping voltage (VC) at 25.3 A peak pulse current, 1500 W peak pulse power (10/1000 μs), and operates up to +185 °C junction temperature - deployed in automotive power rail protection and industrial sensor interface circuits.
For engineers reviewing the TPSMC43AHE3_A/I datasheet, TPSMC43AHE3_A/I pinout, TPSMC43AHE3_A/I application, or TPSMC43AHE3_A/I equivalent, key selection criteria include its AEC-Q101 qualification, unidirectional polarity, low clamping ratio (VC/VBR ≈ 1.38), 1.0 μA reverse leakage at VWM, and compatibility with lead-free reflow per J-STD-020 (MSL level 1, 260 °C peak).
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable breakdown characteristics across temperature. Its 185 °C maximum junction temperature and AEC-Q101 qualification confirm suitability for under-hood automotive environments and high-reliability industrial control modules.
The device delivers 1500 W peak pulse power handling with a 10/1000 μs waveform and exhibits very fast response time (<1 ns), low incremental surge resistance, and excellent clamping linearity - critical for protecting MOSFET gates and microcontroller I/O pins against ESD and load-dump transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 40.9 / 43.0 / 45.2 V - ensures reliable conduction onset above normal operating voltage of 36.8 V systems |
| VWM | 36.8 V - maximum continuous reverse voltage before leakage exceeds 1.0 μA, compatible with 36 V automotive battery systems |
| VC @ IPPM | 59.3 V at 25.3 A - limits transient voltage seen by downstream ICs to safe levels during ISO 7637-2 Pulse 1/2a/5a events |
| PPPM | 1500 W (10/1000 μs) - handles high-energy surges common in motor drive and solenoid switching applications |
| TJ max. | +185 °C - supports operation in engine control units and power inverters without derating in harsh thermal environments |
| Polarity | Unidirectional - protects only against positive transients relative to cathode; requires correct orientation in DC-biased rails |
| Package | SMC (DO-214AB) - industry-standard 2-pin surface-mount outline with 8.0 mm × 8.0 mm copper pad requirement for thermal dissipation |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path | Connected to ground or low-impedance reference; carries full surge current during clamping |
| Cathode | Transient voltage sensing node | Connected to protected line (e.g., 36 V supply rail); initiates avalanche conduction when VAK ≥ VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per stress test plan |
| 185 °C junction rating | Enables direct placement near heat sources (e.g., power MOSFETs) without thermal derating in engine management systems |
| 1500 W peak pulse power | Withstands repetitive load-dump transients (ISO 7637-2 Pulse 5a) without degradation in 12 V/24 V/36 V architectures |
| Low clamping ratio (VC/VBR = 1.38) | Minimizes overvoltage margin required for protected ICs, reducing need for additional series impedance or voltage margin |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns or baking requirements |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 36 V battery-fed ECUs against load-dump transients (ISO 7637-2 Pulse 5a) and alternator overshoot. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power input and ground, absorbing >100 V spikes within nanoseconds. Use Value: Prevents latch-up or gate oxide damage in MCU power supplies and CAN transceivers by limiting rail voltage to ≤59.3 V during surge. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and inductive coupling in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance TVS on differential signal lines (e.g., RS-485, 4–20 mA loop) referenced to local ground. Use Value: Maintains signal integrity with <1.0 μA leakage at 36.8 V while clamping ±8 kV contact ESD per IEC 61000-4-2. |
| Motor Drive Gate Protection | Telecom DC Power Input Protection |
Use Scenario: Safeguarding high-side N-channel MOSFET gates driven by isolated gate drivers in BLDC inverters. IC Role / Device Role / Timing Role: TVS connected between gate and source to clamp Miller-induced voltage spikes during fast switching transitions. Use Value: Limits gate-source voltage to ≤59.3 V, preventing unintended turn-on or oxide breakdown during dV/dt events up to 50 V/ns. |
Use Scenario: Front-end surge suppression on -48 V telecom rectifier outputs feeding base station RF modules. IC Role / Device Role / Timing Role: Unidirectional TVS installed on negative rail to absorb lightning-induced surges coupled via AC mains or outdoor cabling. Use Value: Withstands 1500 W pulses while maintaining 36.8 V standoff, enabling robust compliance with ITU-T K.21 basic protection level. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43AHE3_A/H | Same VBR (40.9–45.2 V), lower PPPM = 600 W, SMB (DO-214AA) package, 3.5 mm × 3.5 mm footprint | Lower surge capacity; suitable for space-constrained consumer electronics but not automotive load-dump duty cycles | Select when board area is limited and peak surge energy is ≤600 W; verify thermal relief on smaller pads |
| TPSMC43AHM3_A/I | Identical electrical specs and SMC package; halogen-free molding compound, same AEC-Q101 qualification | No functional difference; used where halogen-free compliance is mandated by OEM or regional environmental regulations | Direct material substitution for RoHS + halogen-free requirements; no layout or performance change needed |
Compared with TPSMC43AHE3_A/I, SMBJ43AHE3_A/H offers reduced footprint at the cost of 60 % lower surge power handling, while TPSMC43AHM3_A/I provides identical protection performance with halogen-free construction - making it a drop-in replacement where environmental compliance drives material selection.
Availability
TPSMC43AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, motor drive gate protection, and telecom DC power input circuits requiring stable component supply and long-term lifecycle support.
Supply support for TPSMC43AHE3_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 reliability, high-temperature operation, and automotive qualification.
The TPSMC43AHE3_A/I belongs to Vishay's PAR® series of high-power surface-mount TVS diodes, engineered specifically for robust transient suppression in demanding automotive and industrial environments where AEC-Q101 compliance and 185 °C operation are mandatory.
FAQ
What is the maximum clamping voltage of the TPSMC43AHE3_A/I under rated surge conditions?
The TPSMC43AHE3_A/I has a maximum clamping voltage (VC) of 59.3 V when subjected to its rated peak pulse current of 25.3 A using a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the TPSMC43AHE3_A/I qualified for automotive applications?
Yes, the TPSMC43AHE3_A/I is AEC-Q101 qualified and manufactured with RoHS-compliant materials. Its 185 °C maximum junction temperature, MSL level 1 rating, and validation across temperature cycling, high-temperature reverse bias, and surge endurance tests confirm suitability for under-hood automotive modules including engine control units and body electronics.
What does the "HE3" suffix indicate in TPSMC43AHE3_A/I?
The "HE3" suffix denotes Vishay's standard RoHS-compliant, AEC-Q101-qualified product variant with matte tin-plated leads, JESD 201 class 2 whisker resistance, and packaging in 13″ tape-and-reel (3500 pcs/reel). The "A/I" portion specifies revision code "A" and packaging option "I" (13″ reel), per Vishay's ordering nomenclature in document 88407.
How does the TPSMC43AHE3_A/I compare to bidirectional TVS diodes in circuit design?
The TPSMC43AHE3_A/I is unidirectional and must be oriented with cathode toward the protected line - it clamps only positive transients relative to ground. Unlike bidirectional variants, it cannot suppress negative-going surges on DC lines without additional circuitry. Its advantage lies in lower leakage (<1.0 μA at 36.8 V) and tighter VBR tolerance versus bidirectional equivalents of similar power rating.
What PCB layout considerations apply to the TPSMC43AHE3_A/I for optimal thermal and surge performance?
Per Vishay's datasheet, the TPSMC43AHE3_A/I requires 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads at each terminal to meet its 1500 W rating. Minimize trace length between the device and protected node, use internal ground planes for heat spreading, and avoid thermal reliefs on mounting pads to ensure effective junction-to-board heat transfer during repeated surge events.
TPSMC43AHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- 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):
- 25.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCJ)
TPSMC43AHE3_A/I FAQ
1.How can I place an order for TPSMC43AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC43AHE3_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 TPSMC43AHE3_A/I reliable?
The price and inventory of TPSMC43AHE3_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 TPSMC43AHE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMC43AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC43AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC43AHE3_A/I?
TPSMC43AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC43AHE3_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 TPSMC43AHE3_A/I?
For technical support, including TPSMC43AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC43AHE3_A/I requirements.
6.How does Aetrix verify that TPSMC43AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMC43AHE3_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 TPSMC43AHE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMC43AHE3_A/I?
All TPSMC43AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC43AHE3_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 TPSMC43AHE3_A/I part is unused and in its original packaging.
Return procedure for TPSMC43AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMC43AHE3_A/I Tags
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