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Vishay General Semiconductor - Diodes Division TPSMC24AHE3/9AT
- Part No.:
- TPSMC24AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC24AHE3/9AT.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPSMC24AHE3/9AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on power and signal lines. It features a 24 V nominal breakdown voltage (VBR = 22.8–25.2 V at 1 mA), 20.5 V stand-off voltage (VWM), 33.2 V maximum clamping voltage (VC) at 45.2 A peak pulse current, and 1500 W peak pulse power (10/1000 μs). It is AEC-Q101 qualified and rated for operation up to +185 °C junction temperature - used in automotive power rail protection and industrial sensor interface circuits.
For engineers reviewing the TPSMC24AHE3/9AT datasheet, TPSMC24AHE3/9AT pinout, TPSMC24AHE3/9AT application, or TPSMC24AHE3/9AT equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD, surge current capability under 10/1000 μs waveform, thermal derating above 25 °C, unidirectional polarity compatibility with DC-biased rails, and AEC-Q101 qualification status for automotive deployment.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to achieve low incremental surge resistance and excellent clamping linearity during transient events. Its junction design supports stable operation up to TJ = +185 °C and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
The device responds within picoseconds to overvoltage transients induced by inductive switching or ESD, delivering predictable clamping performance across temperature with a VBR temperature coefficient of +0.085 %/°C. It is optimized for single-polarity DC applications where reverse leakage < 1.0 μA at VWM and low forward voltage (< 3.5 V at 100 A) are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 22.8 / 24.0 / 25.2 V at 1 mA - defines minimum voltage at which clamping initiates; ensures reliable turn-on before protected circuit exceeds absolute max rating |
| VWM | 20.5 V - maximum continuous reverse working voltage; must exceed normal operating rail voltage to prevent leakage-induced power loss |
| VC @ IPPM | 33.2 V at 45.2 A - clamped voltage during 1500 W transient; determines worst-case overvoltage seen by downstream ICs |
| PPPM | 1500 W (10/1000 μs) - peak pulse power handling capacity; defines survivability against common automotive load-dump and ISO 7637-2 pulses |
| TJ max. | +185 °C - enables use in under-hood automotive modules and high-temperature industrial enclosures without thermal derating penalties |
| AEC-Q101 | Qualified - confirms reliability validation for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.0 mm × 8.0 mm copper pad requirement for thermal dissipation |
Pinout & Package
TPSMC24AHE3/9AT uses the SMC (DO-214AB) package: molded epoxy case with matte tin-plated leads, cathode indicated by a color band. Mounting requires 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction or transient clamping | Connected to lower-potential side of protected line (e.g., ground or return path); defines unidirectional clamping direction |
| Cathode | Current exit point during clamping; marked by color band | Connected to higher-potential side (e.g., 24 V rail); reverse-biased during normal operation, avalanches during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Reduces surface leakage and improves long-term stability under high humidity and bias stress |
| 1500 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 5a (load dump) without degradation when mounted on specified copper area |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage margin required between protected IC's absolute maximum rating and VBR |
| MSL Level 1, 260 °C peak reflow | Enables standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements |
| 0.085 %/°C VBR tempco | Predictable upward drift of breakdown voltage with temperature - simplifies worst-case margining across -65 °C to +185 °C range |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamp |
|---|---|
|
Use Scenario: Protecting 24 V supply inputs in body control modules against load-dump transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and input filter capacitor to clamp surges to ≤33.2 V. Use Value: Prevents damage to downstream PMICs and microcontrollers by limiting overvoltage to 1.38× VBR while surviving 1500 W pulses. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) from ESD and inductive kickback in factory automation sensors. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA at 20.5 V) TVS connected across signal and return to suppress sub-100 ns transients. Use Value: Maintains signal integrity with <1.0 μA reverse leakage at operating voltage and clamps ESD to <33.2 V without affecting loop accuracy. |
| Telecom DC Power Interface | Computer Peripheral Port Protection |
|
Use Scenario: Safeguarding 24 V DC input ports on PoE-powered telecom edge devices exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device on DC input stage, coordinated with upstream fuse and downstream LC filter. Use Value: Delivers 1500 W surge handling with 33.2 V clamping to ensure compliance with ITU-T K.21 basic protection level. |
Use Scenario: Hardening USB-C or DisplayPort auxiliary channel lines against contact ESD in docking stations. IC Role / Device Role / Timing Role: Discrete unidirectional TVS placed on VCONN or configuration channel lines with minimal capacitance impact. Use Value: Provides robust ±15 kV air/±8 kV contact ESD protection (IEC 61000-4-2) while adding <10 pF junction capacitance at zero bias. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24AHE3/52T | Lower peak pulse power (600 W), smaller SMB (DO-214AA) package, same VBR range and AEC-Q101 qualification | Not suitable for 1500 W load-dump events; limited to lower-energy transients like ESD or relay bounce | Select when board space is constrained and surge energy is ≤600 W; verify thermal pad area matches SMB footprint |
| TPSMC24AHM3/9AT | Halogen-free variant with identical electrical specs, same SMC package, and AEC-Q101 qualification | No functional difference; chosen only when halogen-free material compliance is mandated by OEM or regional regulation | Use interchangeably where RoHS + halogen-free compliance is required; no layout or performance change needed |
Compared with TPSMC24AHE3/9AT, SMBJ24AHE3/52T offers reduced surge capacity in a smaller footprint, while TPSMC24AHM3/9AT provides identical protection with halogen-free construction - enabling direct substitution where environmental compliance drives material selection.
Availability
TPSMC24AHE3/9AT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC input safeguarding requiring stable component supply across extended temperature and high-reliability environments.
Supply support for TPSMC24AHE3/9AT 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, MOSFETs, and protection devices with emphasis on high-reliability, high-temperature, and automotive-grade performance.
The TPSMC series is part of Vishay's PAR® (Protection Against Transients) platform, engineered specifically for robust transient suppression in harsh automotive and industrial environments where AEC-Q101 qualification and +185 °C operation are mandatory.
FAQ
What is the maximum clamping voltage of the TPSMC24AHE3/9AT under standard test conditions?
The TPSMC24AHE3/9AT has a maximum clamping voltage (VC) of 33.2 V when subjected to its rated peak pulse current of 45.2 A using the 10/1000 μs waveform. This value is measured per IEC 61000-4-5 and ANSI/IEEE C62.35 standards and represents the highest voltage the device allows across its terminals during a transient event - critical for ensuring protected ICs remain within their absolute maximum ratings.
Is the TPSMC24AHE3/9AT suitable for automotive applications?
Yes, the TPSMC24AHE3/9AT is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood and chassis-mounted automotive systems. Its 1500 W peak pulse power rating supports compliance with ISO 7637-2 Pulse 5a (load dump), and its MSL Level 1 rating ensures compatibility with lead-free reflow processes used in automotive PCB assembly.
What does the "HE3" suffix indicate in TPSMC24AHE3/9AT?
The "HE3" suffix denotes a RoHS-compliant, AEC-Q101 qualified version of the TPSMC24A in SMC (DO-214AB) package, with matte tin-plated leads meeting J-STD-002 and JESD 22-B102 solderability standards. The "9AT" denotes tape-and-reel packaging with 850 units per 7-inch reel - confirmed in Vishay's ordering information table for this family.
How does the temperature coefficient affect the breakdown voltage of the TPSMC24AHE3/9AT?
The TPSMC24AHE3/9AT has a typical VBR temperature coefficient (αT) of +0.085 %/°C. This means its breakdown voltage increases linearly with junction temperature - e.g., at +125 °C, VBR rises by approximately 8.5 % above its 25 °C value. Designers must account for this positive drift when setting safety margins relative to protected IC voltage limits across the full operating temperature range.
What is the reverse leakage current specification for the TPSMC24AHE3/9AT at its stand-off voltage?
At its maximum stand-off voltage (VWM) of 20.5 V and ambient temperature of 25 °C, the TPSMC24AHE3/9AT exhibits a maximum reverse leakage current (IR) of 1.0 μA. At elevated temperature (TJ = 150 °C), leakage increases to ≤10 μA - a critical parameter for low-power always-on circuits where standby current budget is tightly constrained.
TPSMC24AHE3/9AT 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):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 45.2A
- 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)
TPSMC24AHE3/9AT FAQ
1.How can I place an order for TPSMC24AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC24AHE3/9AT 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 TPSMC24AHE3/9AT reliable?
The price and inventory of TPSMC24AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMC24AHE3/9AT is usually 5 days.
3.What payment methods are accepted for TPSMC24AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC24AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC24AHE3/9AT?
TPSMC24AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC24AHE3/9AT 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 TPSMC24AHE3/9AT?
For technical support, including TPSMC24AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC24AHE3/9AT requirements.
6.How does Aetrix verify that TPSMC24AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All TPSMC24AHE3/9AT 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 TPSMC24AHE3/9AT meets industry standards.
7.What is the process for return or replacement of TPSMC24AHE3/9AT?
All TPSMC24AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC24AHE3/9AT, 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 TPSMC24AHE3/9AT part is unused and in its original packaging.
Return procedure for TPSMC24AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMC24AHE3/9AT Tags
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