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Vishay General Semiconductor - Diodes Division TPSMC33AHE3_A/I
- Part No.:
- TPSMC33AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC33AHE3_A/I.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,780
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Product details
Overview
TPSMC33AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 33 V breakdown voltage (VBR = 31.4–34.7 V at 1 mA), 45.7 V clamping voltage (VC) at 32.8 A, and 185 °C maximum junction temperature - deployed for overvoltage protection of MOSFETs and signal lines in automotive powertrain control units.
For engineers reviewing the TPSMC33AHE3_A/I datasheet, TPSMC33AHE3_A/I pinout, TPSMC33AHE3_A/I application, or TPSMC33AHE3_A/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, MSL Level 1 rating, 10 μA max reverse leakage at 28.2 V, and compatibility with high-reliability automotive PCB layouts requiring RoHS-compliant, matte tin-plated terminals.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping under repetitive surge stress, with thermal derating defined per Figure 2 up to TJ = 185 °C. Its junction passivation enables operation in harsh automotive environments where humidity and thermal cycling exceed standard industrial requirements.
The device responds in sub-nanosecond time to transients induced by inductive load switching, maintaining low incremental surge resistance (<0.1 Ω typical) and clamping within 45.7 V at rated 32.8 A peak pulse current - critical for safeguarding gate drivers and CAN transceivers against ISO 7637-2 Pulse 1/2a/3a events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 31.4 / 33.0 / 34.7 V at 1 mA - defines precise voltage threshold at which avalanche conduction initiates to protect downstream ICs |
| VWM | 28.2 V - maximum continuous reverse working voltage before leakage exceeds 1.0 μA, ensuring no false triggering during normal operation |
| VC @ IPPM | 45.7 V at 32.8 A - clamping voltage under 10/1000 μs surge, limiting stress on protected circuitry to safe levels |
| PPPM | 1500 W - peak pulse power handling capability, enabling robust suppression of high-energy transients like load dump |
| TJ max. | +185 °C - extended junction temperature rating supports under-hood automotive placement without thermal derating penalties |
| Polarity | Unidirectional - blocks reverse voltage only; requires correct orientation relative to protected line's DC bias |
| MSL Level | Level 1 (J-STD-020) - allows unlimited floor life and reflow at 260 °C peak, simplifying SMT manufacturing |
Pinout & Package
Package: SMC (DO-214AB), molded in UL 94 V-0 compliant compound, with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage rail; forms return path during clamping event |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., 24 V supply rail or sensor output); absorbs positive-going surges |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and battery management systems |
| Junction passivation | Enables stable VBR performance across 1000+ thermal cycles (-40 °C to +185 °C) |
| 1500 W peak pulse power | Withstands ISO 7637-2 Pulse 5a (load dump) up to 40 V without degradation |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage margin required in protected circuit design |
| MSL Level 1 | Eliminates bake-out requirement prior to reflow, reducing production cost and risk of moisture-induced popcorning |
Applications
| Automotive Powertrain Control | Industrial Motor Drive Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V supply rails in engine control units (ECUs) from load dump and alternator ripple. IC Role / Device Role / Timing Role: Transient voltage suppressor placed directly at ECU input connector to clamp surges before reaching PMIC and MCU. Use Value: Enables compliance with ISO 16750-2 Section 4.7 (load dump) using single-device solution with <45.7 V clamping ceiling. | Use Scenario: Safeguarding gate driver outputs feeding IGBTs in variable-frequency drives subjected to inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS connected between gate and source to absorb Miller-induced voltage spikes during turn-off. Use Value: Prevents false turn-on of IGBTs by limiting dv/dt-induced overshoot to <45.7 V, improving system reliability. |
| Automotive Body Electronics | Telecom Power Interface |
Use Scenario: Shielding LIN bus transceivers and door module microcontrollers from ESD and relay-switching transients. IC Role / Device Role / Timing Role: TVS placed on LIN data line (with series resistor) to shunt fast transients while preserving signal integrity. Use Value: Meets ISO 10605 ±8 kV contact discharge requirement with <1 ns response and <10 μA leakage at 12 V. | Use Scenario: Protecting 48 V PoE-powered equipment front-end circuits from lightning-induced surges on Ethernet pairs. IC Role / Device Role / Timing Role: Primary surge clamp on DC input rail upstream of DC-DC converter, coordinated with secondary TVS on data lines. Use Value: Handles 1500 W surge energy per IEC 61000-4-5 Combination Wave (1.2/50 μs + 8/20 μs), supporting Class B immunity. |
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-E3/5AT | Lower PPPM (400 W), same VBR range, SMA package (smaller footprint, lower thermal mass) | Not AEC-Q101 qualified; limited to commercial/industrial use; unsuitable for under-hood automotive | Select when space-constrained and automotive qualification is not required |
| TPSMC33AHM3_A/I | Identical electrical specs; halogen-free molding compound (vs. RoHS-only HE3); same AEC-Q101 qualification | No functional difference; chosen only when halogen-free compliance is mandated by OEM specification | Select when halogen-free material declaration is contractually required |
Compared with SMAJ33A-E3/5AT and TPSMC33AHM3_A/I, the TPSMC33AHE3_A/I delivers higher surge robustness (1500 W vs. 400 W) and automotive-grade reliability, while offering identical pinout and mounting compatibility with other SMC-packaged TVS diodes in the family - making it optimal for high-stress automotive power domains.
Availability
TPSMC33AHE3_A/I is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drive protection, and telecom power interface applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPSMC33AHE3_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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, high-power, and automotive-qualified components.
The TPSMC33AHE3_A/I belongs to the PAR® series of surface-mount transient voltage suppressors, engineered specifically for automotive and industrial environments demanding AEC-Q101 qualification, 185 °C operation, and 1500 W surge immunity.
FAQ
What is the breakdown voltage tolerance for TPSMC33AHE3_A/I?
The TPSMC33AHE3_A/I has a specified breakdown voltage (VBR) range of 31.4 V to 34.7 V at 1 mA test current, representing ±5% tolerance around the nominal 33 V rating. This tight distribution ensures consistent clamping behavior across production lots and supports reliable overvoltage margining in safety-critical automotive designs.
Is TPSMC33AHE3_A/I suitable for bidirectional transient protection?
No, the TPSMC33AHE3_A/I is unidirectional only, designed to clamp positive-going transients on a positively biased line. For bidirectional protection (e.g., data lines with AC signals), a dual-diode configuration or a dedicated bidirectional TVS such as SMBJ33CA would be required - the TPSMC33AHE3_A/I must be oriented with cathode toward the protected line.
Does TPSMC33AHE3_A/I meet AEC-Q101 qualification?
Yes, the TPSMC33AHE3_A/I is explicitly AEC-Q101 qualified, as confirmed in the Vishay datasheet (Document Number: 88407, Revision: 19-Jan-2024). The "HE3" suffix denotes RoHS-compliant and AEC-Q101 qualified construction, validated for automotive applications including powertrain, body control, and ADAS subsystems.
What is the maximum clamping voltage of TPSMC33AHE3_A/I at rated surge current?
The TPSMC33AHE3_A/I exhibits a maximum clamping voltage (VC) of 45.7 V at its rated peak pulse current (IPPM) of 32.8 A, measured with a 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case surge events and is critical for validating voltage headroom in downstream ICs.
Can TPSMC33AHE3_A/I be used in lead-free reflow processes?
Yes, the TPSMC33AHE3_A/I is rated for lead-free reflow with a maximum peak temperature of 260 °C, meeting J-STD-020 MSL Level 1 requirements. Its matte tin-plated terminals are solderable per J-STD-002 and JESD 22-B102, and the device undergoes JESD 201 Class 2 whisker testing - ensuring process compatibility and long-term interconnect reliability.
TPSMC33AHE3_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):
- 28.2V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 45.7V
- Current - Peak Pulse (10/1000µs):
- 32.8A
- 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)
TPSMC33AHE3_A/I FAQ
1.How can I place an order for TPSMC33AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC33AHE3_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 TPSMC33AHE3_A/I reliable?
The price and inventory of TPSMC33AHE3_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 TPSMC33AHE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMC33AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC33AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC33AHE3_A/I?
TPSMC33AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC33AHE3_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 TPSMC33AHE3_A/I?
For technical support, including TPSMC33AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC33AHE3_A/I requirements.
6.How does Aetrix verify that TPSMC33AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMC33AHE3_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 TPSMC33AHE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMC33AHE3_A/I?
All TPSMC33AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC33AHE3_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 TPSMC33AHE3_A/I part is unused and in its original packaging.
Return procedure for TPSMC33AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMC33AHE3_A/I Tags
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