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Vishay General Semiconductor - Diodes Division TPSMC24HE3_A/H
- Part No.:
- TPSMC24HE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC24HE3_A/H.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,864
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Product details
Overview
TPSMC24HE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, designed for clamping voltage transients on power and signal lines. It features 24 V nominal breakdown voltage (21.6–26.4 V), 19.4 V stand-off voltage, 1500 W peak pulse power (10/1000 μs), 43.2 A peak pulse current, and 34.7 V maximum clamping voltage at rated surge - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power rails.
For engineers reviewing the TPSMC24HE3_A/H datasheet, TPSMC24HE3_A/H pinout, TPSMC24HE3_A/H application, or TPSMC24HE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 185 °C junction rating, low clamping ratio (VC/VWM ≈ 1.79), and MSL Level 1 reflow compatibility - critical for high-reliability automotive ECUs and industrial motor drives.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology with optimized junction passivation for stable clamping under repetitive surge stress. Its unidirectional architecture provides forward conduction path during overvoltage events while maintaining low leakage (<1 μA at 19.4 V, 25 °C) and fast response time (sub-nanosecond).
Rated for TJ = –65 °C to +185 °C operation and qualified per AEC-Q101, the device sustains 200 A non-repetitive forward surge (8.3 ms half-sine) and exhibits low incremental surge resistance - enabling robust protection of 24 V DC systems against ISO 7637-2 pulse 1/2a/3a and IEC 61000-4-5 surges when mounted on 8.0 mm × 8.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 21.6–26.4 V at 1 mA - defines minimum voltage at which clamping initiates; ensures reliable turn-on before downstream component damage. |
| Stand-off Voltage VWM | 19.4 V - maximum continuous reverse working voltage; must exceed normal system operating voltage (e.g., 24 V nominal rail ±10 %). |
| Peak Pulse Power PPPM | 1500 W (10/1000 μs) - specifies energy-handling capability for transient suppression; supports automotive load-dump and inductive switching events. |
| Clamping Voltage VC | 34.7 V at 43.2 A - maximum voltage seen by protected circuit during rated surge; determines safe margin for 36 V-rated components. |
| Junction Temperature Range | –65 °C to +185 °C - enables deployment in under-hood automotive environments and high-temperature industrial enclosures without derating. |
| AEC-Q101 Qualification | Qualified - confirms reliability for automotive electronic control units per stress test requirements including HTGB, HTRB, and temperature cycling. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode indicated by color band. Dimensions: 7.11 mm × 6.22 mm × 2.90 mm (L × W × H); matte tin-plated leads, MSL Level 1, 260 °C peak reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point during clamping | Connected to lower-potential side (e.g., GND or return path); enables unidirectional surge shunting to ground. |
| Cathode | Reverse-biased terminal during normal operation | Marked by color band; connected to protected line (e.g., 24 V supply); conducts only during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Supports high-energy transients common in 24 V automotive systems without thermal runaway or parametric shift. |
| 185 °C maximum junction temperature | Enables operation in engine bay or industrial drive cabinets where ambient exceeds 125 °C without derating. |
| AEC-Q101 qualification | Validates long-term reliability under automotive-grade temperature, humidity, and mechanical stress conditions. |
| Low clamping ratio (VC/VWM = 1.79) | Minimizes overvoltage exposure to protected ICs - critical for safeguarding 36 V-tolerant CAN transceivers and gate drivers. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial 24 V PLC I/O Module |
|---|---|
|
Use Scenario: Protection of 24 V supply rail against load dump (ISO 7637-2 Pulse 5a) and alternator ripple in diesel engine ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS diode clamping transient energy to ground during voltage spikes up to 60 V. Use Value: Prevents latch-up or permanent damage to microcontrollers and CAN transceivers by limiting rail voltage to ≤34.7 V during 1500 W surges. |
Use Scenario: Safeguarding digital input channels of programmable logic controllers exposed to inductive kickback from solenoid valves. IC Role / Device Role / Timing Role: Fast-response voltage clamp placed between field-side 24 V input and optocoupler input stage. Use Value: Ensures signal integrity and prevents false triggering by suppressing 10/1000 μs transients before they reach isolation barrier. |
| Telecom Remote Radio Unit (RRU) Power Input | Consumer Appliance Motor Drive Board |
|
Use Scenario: Protecting DC power input of outdoor base station RRUs from lightning-induced surges on -48 V telecom supplies. IC Role / Device Role / Timing Role: Primary unidirectional TVS on main power feed, coordinated with upstream MOVs for staged clamping. Use Value: Maintains <1 μA leakage at -48 V operating point while delivering 34.7 V clamping to preserve downstream DC/DC converter input rating. |
Use Scenario: Shielding MCU power pins and H-bridge gate driver supplies in smart washing machine motor control boards. IC Role / Device Role / Timing Role: Localized TVS on 24 V auxiliary rail feeding BLDC gate drivers and position sensors. Use Value: Eliminates need for external RC snubbers by absorbing commutation spikes with sub-ns response and no recovery delay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-E3/5AT | DO-214AC (SMA) package; 24 V VBR (21.6–26.4 V); 400 W PPPM; 11.3 A IPPM; same VC = 38.9 V | Lower power handling limits use to low-energy signal-line protection; not suitable for 24 V power rail load dump. | Select when board space is constrained and surge energy is ≤400 W (e.g., USB or RS-485 data lines). |
| 1.5KE24A | DO-201AD (Axial) through-hole package; same VBR and PPPM; 62.8 A IPPM; VC = 36.0 V; no AEC-Q101 qualification | Lacks automotive qualification and SMT compatibility; requires manual assembly and larger PCB footprint. | Choose only for legacy through-hole designs where rework tolerance and cost outweigh AEC-Q101 and thermal performance needs. |
Compared with SMAJ24A-E3/5AT and 1.5KE24A, the TPSMC24HE3_A/H delivers 3.75× higher peak power in a surface-mount package with AEC-Q101 validation and 185 °C operation - making it the sole option for compact, high-reliability 24 V automotive power rail protection.
Availability
TPSMC24HE3_A/H is available at Aetrix Electronics and suitable for automotive engine control units, industrial 24 V PLC I/O modules, and telecom remote radio unit power inputs requiring stable component supply, AEC-Q101 compliance, and high-temperature operational continuity.
Supply support for TPSMC24HE3_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 high-reliability and automotive-grade performance.
The TPSMC24HE3_A/H belongs to Vishay's PAR® series of high-power surface-mount TVS diodes, engineered specifically for robust transient suppression in harsh-environment automotive and industrial power systems.
FAQ
What is the maximum clamping voltage of the TPSMC24HE3_A/H at its rated peak pulse current?
The TPSMC24HE3_A/H has a maximum clamping voltage (VC) of 34.7 V at its rated peak pulse current (IPPM) of 43.2 A, measured using a 10/1000 μs waveform. This value ensures protected circuits remain within safe voltage margins - for example, preserving headroom for 36 V-rated gate drivers or CAN transceivers. The clamping performance is validated across the full operating temperature range up to 185 °C junction temperature.
Is the TPSMC24HE3_A/H qualified for automotive applications?
Yes, the TPSMC24HE3_A/H is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood engine control units. Its 185 °C maximum junction temperature, MSL Level 1 reflow compatibility, and passivated anisotropic rectifier construction meet stringent automotive reliability requirements. The "HE3" suffix further indicates RoHS compliance and JESD 201 Class 2 whisker resistance - essential for long-life automotive deployments.
What does the "A/H" suffix in TPSMC24HE3_A/H indicate?
The "A/H" suffix in TPSMC24HE3_A/H denotes the revision code ("A") and packaging format ("H" = 7-inch plastic tape and reel, 850 units per reel). Per Vishay documentation, the "A" revision corresponds to ±5 % tolerance on breakdown voltage and reflects the latest qualified build. The "HE3" portion confirms RoHS compliance and AEC-Q101 qualification, while "H" specifies the standard delivery mode for automated SMT placement.
How does the TPSMC24HE3_A/H compare to bidirectional TVS diodes in 24 V systems?
The TPSMC24HE3_A/H is unidirectional and optimized for DC power rail protection where reverse polarity is not expected - such as 24 V battery-fed systems. Unlike bidirectional variants, it offers lower leakage (<1 μA at 19.4 V) and tighter clamping (34.7 V vs. typical 38–42 V for bidirectional equivalents), improving efficiency and noise margin. Bidirectional versions would be required only for AC-coupled or polarity-reversal-prone interfaces.
What PCB pad layout is recommended for optimal thermal and surge performance of the TPSMC24HE3_A/H?
Vishay specifies mounting the TPSMC24HE3_A/H on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads at each terminal to achieve rated 1500 W pulse power. Thermal vias under pads and connection to internal ground/power planes are recommended to sustain repeated surges. The DO-214AB outline drawing confirms minimum pad dimensions of 3.20 mm length and 1.52 mm width, with 4.69 mm maximum body width clearance.
TPSMC24HE3_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):
- 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 (SMC)
TPSMC24HE3_A/H FAQ
1.How can I place an order for TPSMC24HE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC24HE3_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 TPSMC24HE3_A/H reliable?
The price and inventory of TPSMC24HE3_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 TPSMC24HE3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMC24HE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC24HE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC24HE3_A/H?
TPSMC24HE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC24HE3_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 TPSMC24HE3_A/H?
For technical support, including TPSMC24HE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC24HE3_A/H requirements.
6.How does Aetrix verify that TPSMC24HE3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMC24HE3_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 TPSMC24HE3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMC24HE3_A/H?
All TPSMC24HE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC24HE3_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 TPSMC24HE3_A/H part is unused and in its original packaging.
Return procedure for TPSMC24HE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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