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Vishay General Semiconductor - Diodes Division TPSMC33HE3_A/H
- Part No.:
- TPSMC33HE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC33HE3_A/H.pdf
- Description:
- TVS DIODE 26.8VWM 47.7VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,498
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Product details
Overview
TPSMC33HE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-reliability overvoltage protection of sensitive electronics. It features 33 V breakdown voltage (VBR = 31.4–34.7 V), 28.2 V stand-off voltage (VWM), 1500 W peak pulse power (10/1000 µs), 45.7 V clamping voltage at 32.8 A, and operates up to +185 °C junction temperature - deployed on automotive sensor signal lines, industrial I/O ports, and MOSFET gate protection circuits.
For engineers reviewing the TPSMC33HE3_A/H datasheet, TPSMC33HE3_A/H pinout, TPSMC33HE3_A/H application, or TPSMC33HE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, MSL Level 1 rating, 185 °C thermal capability, and compatibility with 0.31" × 0.31" copper pad layouts per JEDEC standards.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping under repetitive surge stress. Its 10/1000 µs waveform response supports robust protection against inductive switching transients and lightning-induced surges in automotive and industrial environments.
The device is rated for non-repetitive peak pulse current of 32.8 A and exhibits low incremental surge resistance, enabling fast voltage clamping below 45.7 V at rated IPPM. Its TJ = −65 °C to +185 °C operating range and AEC-Q101 qualification confirm suitability for under-hood automotive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 31.4 V / 33.0 V / 34.7 V - defines minimum voltage at which device enters avalanche conduction during transient events |
| VWM | 28.2 V - maximum continuous reverse working voltage before leakage exceeds 1 µA |
| VC @ IPPM | 45.7 V - clamped voltage across terminals at 32.8 A peak pulse current, limiting downstream IC stress |
| PPPM | 1500 W - peak pulse power handling capability with 10/1000 µs waveform, defining surge energy absorption capacity |
| TJ max. | +185 °C - enables operation in high-temperature automotive engine compartments without derating |
| Polarity | Unidirectional - protects only against positive transients relative to cathode; requires correct orientation in circuit |
| MSL Rating | Level 1 (J-STD-020) - allows unlimited floor life and reflow up to 260 °C peak, simplifying SMT assembly |
Pinout & Package
TPSMC33HE3_A/H is housed in the SMC (DO-214AB) surface-mount package: molded epoxy case with matte tin-plated leads, 0.320" × 0.246" footprint, cathode band marking, and optimized thermal pad layout (0.31" × 0.31" copper per terminal).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to protected line (e.g., signal or power rail); conducts during positive surge when cathode is at higher potential |
| Cathode | Current exit point during forward conduction; marked by color band | Typically tied to ground or lower-potential reference; defines polarity and orientation for unidirectional clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD47 |
| 185 °C junction rating | Supports placement near heat sources (e.g., power converters, engine control units) without thermal derating |
| 1500 W peak pulse power | Withstands high-energy transients such as ISO 7637-2 Pulse 5a (load dump) in 12 V systems |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage exposure to downstream components while maintaining margin above VWM |
| MSL Level 1 | Eliminates bake-out requirements and enables standard reflow profiles, reducing manufacturing cost and risk |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (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: Enables compliance with ISO 16750-2 (electrical loads) and IEC 61000-4-2 (ESD) without adding series impedance or latency. | Use Scenario: Safeguarding PLC digital input modules and analog front-ends from field-wiring induced surges in factory automation systems. IC Role / Device Role / Timing Role: Standoff protection element mounted directly at connector entry point to shunt surge energy before reaching isolation barriers or ADCs. Use Value: Maintains signal integrity during 1 kV/0.5 J surges per IEC 61000-4-5, preserving measurement accuracy and system uptime. |
| Power MOSFET Gate Protection | Telecom Line Interface Protection |
Use Scenario: Shielding high-side N-channel MOSFET gates in DC-DC controllers from Miller-induced voltage spikes during switching transitions. IC Role / Device Role / Timing Role: Fast-response clamping diode placed between gate and source to clamp dv/dt-induced overshoot. Use Value: Prevents gate oxide breakdown at <45.7 V clamping level while adding negligible capacitance (<100 pF at 0 V) to gate drive loop. | Use Scenario: Protecting Ethernet PHY interfaces and PoE-powered devices from lightning-induced common-mode surges on twisted-pair cables. IC Role / Device Role / Timing Role: Primary-level unidirectional TVS on each data line (e.g., TX+/TX−), referenced to local ground plane. Use Value: Survives 10/700 µs telecom surges up to 1 kV with sub-1 ns response time, meeting GR-1089-CORE 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 |
|---|---|---|---|
| SMAJ33A | Lower PPPM (400 W), same VBR range, SMA package (smaller thermal mass) | Not AEC-Q101 qualified; limited to consumer/industrial use below 150 °C | Select when cost sensitivity outweighs automotive qualification and surge energy requirements |
| TPSMC33AHM3_A/H | Identical electrical specs; halogen-free molding compound (vs. RoHS-compliant only in HE3) | Same automotive and industrial use cases; required where halogen-free compliance is mandated | Choose HM3 suffix when environmental compliance (e.g., IPC-1752A) supersedes standard RoHS |
Compared with SMAJ33A and TPSMC33AHM3_A/H, the TPSMC33HE3_A/H delivers superior surge robustness (1500 W vs. 400 W) and automotive qualification, while offering identical clamping performance and SMC package thermal advantages - making it optimal for high-reliability 12 V/24 V systems requiring long-term supply stability.
Availability
TPSMC33HE3_A/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O protection, and telecom interface hardening requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for TPSMC33HE3_A/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 reliability, thermal performance, and automotive qualification.
The TPSMC33HE3_A/H belongs to Vishay's PAR® family of high-power surface-mount TVS diodes, engineered specifically for harsh-environment overvoltage protection in automotive, industrial, and telecom infrastructure applications.
FAQ
What is the clamping voltage of the TPSMC33HE3_A/H at its rated peak pulse current?
The TPSMC33HE3_A/H has a maximum clamping voltage (VC) of 45.7 V at its rated peak pulse current (IPPM) of 32.8 A, measured using a 10/1000 µs waveform. This value ensures downstream components remain within safe operating limits during surge events. The TPSMC33HE3_A/H achieves this clamping performance while maintaining low incremental surge resistance and fast response time, critical for protecting sensitive ICs like microcontrollers and transceivers.
Is the TPSMC33HE3_A/H qualified for automotive applications?
Yes, the TPSMC33HE3_A/H is AEC-Q101 qualified and carries the "HE3" suffix indicating RoHS-compliance and automotive-grade reliability. It meets rigorous stress tests including high-temperature reverse bias, temperature cycling, and ESD per JESD22. The TPSMC33HE3_A/H is routinely used in engine control units, ADAS sensors, and body electronics where junction temperatures reach +185 °C.
What does the "HE3" suffix mean in TPSMC33HE3_A/H?
The "HE3" suffix in TPSMC33HE3_A/H denotes a RoHS-compliant, AEC-Q101 qualified variant with matte tin-plated leads and JESD201 Class 2 whisker resistance. The "_A/H" indicates revision A in 7" tape-and-reel packaging (850 units per reel). The TPSMC33HE3_A/H is distinct from HM3 versions, which add halogen-free compound compliance while retaining identical electrical and thermal specs.
Can the TPSMC33HE3_A/H replace the SMAJ33A in existing designs?
No direct replacement: the TPSMC33HE3_A/H uses the larger SMC (DO-214AB) package versus SMA (DO-214AC) for the SMAJ33A, requiring PCB layout changes. While both share 33 V nominal breakdown, the TPSMC33HE3_A/H offers 1500 W peak power (vs. 400 W) and AEC-Q101 qualification - making it unsuitable as a drop-in substitute unless thermal and surge requirements are upgraded. Redesign is needed to accommodate the TPSMC33HE3_A/H.
What is the maximum operating temperature for the TPSMC33HE3_A/H?
The TPSMC33HE3_A/H has a maximum junction temperature (TJ) of +185 °C, validated per AEC-Q101 test conditions. This enables reliable operation in under-hood automotive locations and high-power industrial enclosures without thermal derating. The TPSMC33HE3_A/H maintains specified VBR, VC, and leakage performance across its full −65 °C to +185 °C range, confirmed by Vishay's temperature coefficient data (αT = 0.089 %/°C).
TPSMC33HE3_A/H 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):
- 26.8V
- Voltage - Breakdown (Min):
- 29.7V
- Voltage - Clamping (Max) @ Ipp:
- 47.7V
- Current - Peak Pulse (10/1000µs):
- 31.4A
- 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)
TPSMC33HE3_A/H FAQ
1.How can I place an order for TPSMC33HE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC33HE3_A/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 TPSMC33HE3_A/H reliable?
The price and inventory of TPSMC33HE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMC33HE3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMC33HE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC33HE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC33HE3_A/H?
TPSMC33HE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC33HE3_A/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 TPSMC33HE3_A/H?
For technical support, including TPSMC33HE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC33HE3_A/H requirements.
6.How does Aetrix verify that TPSMC33HE3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMC33HE3_A/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 TPSMC33HE3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMC33HE3_A/H?
All TPSMC33HE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC33HE3_A/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 TPSMC33HE3_A/H part is unused and in its original packaging.
Return procedure for TPSMC33HE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMC33HE3_A/H Tags
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