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Vishay General Semiconductor - Diodes Division TPSMA24HE3_A/H
- Part No.:
- TPSMA24HE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA24HE3_A/H.pdf
- Description:
- TVS DIODE 19.4VWM 34.7VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,043
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Product details
Overview
TPSMA24HE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for clamping inductive switching transients and lightning-induced surges on power and signal lines. It features a 24 V nominal breakdown voltage (VBR = 22.8–25.2 V), 400 W peak pulse power (10/1000 µs), 33.2 V maximum clamping voltage at 12 A, and operates up to TJ = 185 °C - suitable for automotive engine control units and industrial sensor interfaces.
For engineers reviewing the TPSMA24HE3_A/H datasheet, TPSMA24HE3_A/H pinout, TPSMA24HE3_A/H application, or TPSMA24HE3_A/H equivalent, key selection criteria include unidirectional polarity, SMA (DO-214AC) package compatibility, AEC-Q101 qualification status, TJ = 185 °C thermal rating, and verified clamping performance under 10/1000 µs surge conditions.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its junction design enables reliable operation at 185 °C junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
The device delivers precise clamping with 33.2 V VC at IPPM = 12.0 A (10/1000 µs), exhibits <1.0 µA reverse leakage at VWM = 20.5 V (TA = 25 °C), and maintains stable VBR across temperature via αT = 0.085 %/°C coefficient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 22.8 V / 24.0 V / 25.2 V - ensures consistent avalanche initiation across production lots and temperature |
| VWM | 20.5 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 33.2 V at 12.0 A - clamping voltage limiting downstream IC stress during 10/1000 µs transients |
| PPPM | 400 W - peak surge power handling capability under standard 10/1000 µs waveform |
| TJ max. | 185 °C - supports under-hood automotive and high-ambient industrial environments |
| Polarity | Unidirectional - protects against positive-going transients only; cathode band denotes terminal |
| AEC-Q101 | Qualified - validated for automotive reliability including HTGB, HTRB, and temperature cycling |
Pinout & Package
TPSMA24HE3_A/H is housed in the SMA (DO-214AC) surface-mount package: compact 4.93 mm × 3.99 mm body with 2.54 mm lead pitch, matte tin-plated terminals, UL 94 V-0 molding compound, and cathode identification via color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal avalanche junction | Connected to protected line; conducts when transient exceeds VBR, shunting current to ground |
| Anode (non-banded end) | Cathode of internal avalanche junction | Typically tied to system ground or low-impedance return path for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable VBR and low leakage over lifetime and temperature |
| High-temperature capability | TJ = 185 °C rating enables use in engine compartments and industrial motor drives without derating |
| Fast response time | Sub-nanosecond turn-on ensures clamping occurs before sensitive downstream components experience overvoltage |
| Low incremental surge resistance | Minimizes VC rise under high-current surges, improving protection margin for 3.3 V/5 V logic and MOSFET gates |
| MSL Level 1 compliance | Supports standard SMT reflow profiles up to 260 °C peak without preconditioning or dry-pack requirements |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protects microcontroller GPIO and CAN transceiver power rails from load dump and alternator ripple in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between 12 V supply and local LDO input or directly across IC power pins. Use Value: Limits transient voltage to ≤33.2 V during 400 W surges, preventing latch-up or gate oxide damage in AEC-Q100 qualified MCUs. | Use Scenario: Shields 24 V DC digital input circuitry from inductive kickback generated by solenoid and relay coils in factory automation. IC Role / Device Role / Timing Role: Primary surge suppression device mounted at connector entry point, upstream of optocoupler or Schmitt trigger input stage. Use Value: Clamps 10/1000 µs transients to 33.2 V while maintaining <1 µA leakage at 20.5 V, ensuring stable logic threshold detection. |
| Telecom Base Station Power Supply | Consumer Appliance Motor Drive Board |
Use Scenario: Safeguards DC-DC converter inputs and PMBus communication lines against lightning-induced surges on outdoor telecom equipment power feeds. IC Role / Device Role / Timing Role: Secondary-level TVS on 48 V backplane rail and isolated I²C bus lines, coordinated with primary MOV protection. Use Value: Provides precise 24 V clamping with 0.085 %/°C VBR drift, enabling predictable coordination with upstream overvoltage protection ICs. | Use Scenario: Suppresses commutation spikes from brushed DC motors in washing machines and HVAC blowers connected to MCU-controlled H-bridge drivers. IC Role / Device Role / Timing Role: Localized TVS on motor power traces adjacent to driver ICs and current-sense amplifiers. Use Value: Withstands repetitive 40 A IFSM surges and maintains 33.2 V clamping, protecting 5 V analog front-end circuits from EMI-coupled transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A | Same SMA package, 24 V VBR, but rated for 400 W with 1.0 W PD; no AEC-Q101 qualification stated | Not automotive-qualified; suitable for commercial/industrial use where extended temperature validation not required | Select SMAJ24A for cost-sensitive non-automotive designs needing identical electrical specs but without AEC-Q101 traceability |
| TPSMA24AHM3_A/H | Identical electrical specs and AEC-Q101 qualification; halogen-free molding compound vs. RoHS-compliant (non-halogen-free) in TPSMA24HE3_A/H | Required for halogen-free BOM compliance in EU medical or green-certified industrial equipment | Choose TPSMA24AHM3_A/H when halogen-free material compliance is mandated by end-equipment environmental standards |
Compared with SMAJ24A and TPSMA24AHM3_A/H, the TPSMA24HE3_A/H provides AEC-Q101 qualification and RoHS compliance in a halogen-containing package - making it optimal for automotive Tier-1 suppliers requiring full traceability and high-temperature reliability without halogen-free constraints.
Availability
TPSMA24HE3_A/H is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC input conditioning, and telecom power rail surge suppression requiring stable component supply across multi-year production cycles.
Supply support for TPSMA24HE3_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-grade qualification.
The TPSMAxxA family was engineered specifically for high-reliability transient suppression in harsh environments - targeting automotive powertrain, industrial automation, and infrastructure equipment where 185 °C operation and AEC-Q101 validation are mandatory.
FAQ
What is the maximum clamping voltage of the TPSMA24HE3_A/H under standard surge conditions?
The TPSMA24HE3_A/H has a maximum clamping voltage (VC) of 33.2 V when subjected to a 10/1000 µs waveform at IPPM = 12.0 A. This value is measured per JEDEC standards and reflects worst-case voltage seen by downstream circuitry during surge events. The TPSMA24HE3_A/H maintains this clamping performance across its full operating temperature range, supporting robust protection design in automotive and industrial applications.
Is the TPSMA24HE3_A/H qualified for automotive use?
Yes, the TPSMA24HE3_A/H is AEC-Q101 qualified, as confirmed in Vishay's official documentation (Document Number: 88405). This qualification covers stress tests including high-temperature reverse bias, high-temperature operating life, and temperature cycling - validating its suitability for automotive powertrain and chassis applications. The "HE3" suffix explicitly denotes RoHS-compliant and AEC-Q101 qualified versions of the TPSMA24HE3_A/H.
What does the "HE3" suffix mean in TPSMA24HE3_A/H?
The "HE3" suffix in TPSMA24HE3_A/H indicates a RoHS-compliant, AEC-Q101 qualified variant with matte tin-plated leads and JESD201 Class 2 whisker resistance. The "_A/H" denotes revision code "A" and packaging in 7″ tape-and-reel (H = 1800 pcs/reel). This suffix distinguishes it from HM3 (halogen-free) and non-qualified base part numbers, ensuring traceability to automotive-grade manufacturing and testing protocols for the TPSMA24HE3_A/H.
Can the TPSMA24HE3_A/H be used in bidirectional protection circuits?
No, the TPSMA24HE3_A/H is unidirectional only, as specified in the Vishay datasheet. It protects against positive-going transients on the cathode side relative to anode (ground). For bidirectional protection, two TPSMA24HE3_A/H devices must be connected in series opposition, or a dedicated bidirectional TVS such as SMBJ24CA should be selected. Using a single TPSMA24HE3_A/H in reverse-biased configuration will not provide clamping for negative transients.
What is the thermal resistance junction-to-ambient (RθJA) for the TPSMA24HE3_A/H in standard PCB layout?
Vishay does not publish a specific RθJA value for the TPSMA24HE3_A/H in the provided datasheet. However, thermal performance is characterized under defined conditions: mounted on 0.2″ × 0.2″ (5.0 mm × 5.0 mm) copper pads per terminal. Under those conditions, the device achieves 1.0 W steady-state power dissipation at TA = 25 °C and derates linearly above that ambient. Designers should refer to Figure 2 in Document 88405 for pulse power derating curves applicable to the TPSMA24HE3_A/H.
TPSMA24HE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 19.4V
- Voltage - Breakdown (Min):
- 21.6V
- Voltage - Clamping (Max) @ Ipp:
- 34.7V
- Current - Peak Pulse (10/1000µs):
- 11.5A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
TPSMA24HE3_A/H FAQ
1.How can I place an order for TPSMA24HE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA24HE3_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 TPSMA24HE3_A/H reliable?
The price and inventory of TPSMA24HE3_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 TPSMA24HE3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMA24HE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA24HE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA24HE3_A/H?
TPSMA24HE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA24HE3_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 TPSMA24HE3_A/H?
For technical support, including TPSMA24HE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA24HE3_A/H requirements.
6.How does Aetrix verify that TPSMA24HE3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMA24HE3_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 TPSMA24HE3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMA24HE3_A/H?
All TPSMA24HE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA24HE3_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 TPSMA24HE3_A/H part is unused and in its original packaging.
Return procedure for TPSMA24HE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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