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Vishay General Semiconductor - Diodes Division TPSMA24AHE3_A/H
- Part No.:
- TPSMA24AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA24AHE3_A/H.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,184
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Product details
Overview
TPSMA24AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) 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), 400 W peak pulse power (10/1000 µs), 33.2 V maximum clamping voltage at 12 A, 1.0 W steady-state power dissipation, and operates up to +185 °C junction temperature - ideal for automotive ECUs and industrial sensor protection.
For engineers reviewing the TPSMA24AHE3_A/H datasheet, TPSMA24AHE3_A/H pinout, TPSMA24AHE3_A/H application, or TPSMA24AHE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (HE3 suffix), MSL Level 1 rating, 10/1000 µs waveform compliance, and thermal stability under high-reliability automotive and industrial surge conditions.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD, lightning-induced surges, and inductive switching transients. Its unidirectional configuration provides forward conduction capability while clamping reverse overvoltage events.
The device is rated for 40 A non-repetitive peak forward surge current (8.3 ms half-sine), with a maximum forward voltage of 3.5 V at 25 A, and exhibits a positive temperature coefficient of breakdown voltage (+0.085 %/°C), ensuring predictable clamping behavior across its -65 °C to +185 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 22.8 V / 24.0 V / 25.2 V - defines precise clamping onset threshold at 1 mA test current |
| VWM | 20.5 V - maximum continuous reverse working voltage before leakage exceeds 1 μA |
| VC @ IPPM | 33.2 V at 12.0 A - actual clamped voltage during 400 W transient, limiting downstream IC stress |
| PPPM | 400 W (10/1000 µs) - peak surge energy handling capacity per industry-standard waveform |
| TJ max. | +185 °C - enables operation in under-hood automotive and high-temperature industrial environments |
| Polarity | Unidirectional - allows forward conduction; suited for DC power rail and single-polarity signal line protection |
| AEC-Q101 | Qualified - validated for automotive-grade reliability per stress test requirements |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, matte tin-plated leads, UL 94 V-0 molding compound, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient clamp output node | Connected to protected line; conducts during overvoltage to shunt current to ground |
| Anode | Reference/return path | Typically tied to system ground or lower-potential rail; completes clamping path |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable leakage performance and long-term reliability under thermal cycling and humidity |
| 400 W peak pulse power (10/1000 µs) | Provides robust protection against ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 surge events |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture-related popcorning risk |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control, body electronics, and ADAS sensors |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage overshoot during surge, reducing stress on downstream MOSFETs or microcontrollers |
Applications
| Automotive Engine Control Unit (ECU) Power Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V supply rails in diesel/gasoline engine control modules from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery input and LDO/regulator input to clamp surges above 33.2 V. Use Value: Prevents regulator latch-up or destruction during ISO 16750-2 load dump events (up to 60 V, 400 ms), leveraging 185 °C TJ rating for under-hood placement. | Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA current loop) of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Clamps induced transients from nearby motor drives or relay switching on sensor output traces. Use Value: Maintains signal integrity by limiting voltage excursion to ≤33.2 V, preventing ADC saturation or op-amp damage without adding series resistance. |
| Telecom Base Station DC Power Input | Consumer Appliance Motor Drive Board |
Use Scenario: Front-end protection of 24/48 V DC power inputs in outdoor telecom cabinets exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary TVS element in multi-stage protection circuit, absorbing bulk surge energy before downstream MOVs or GDTs. Use Value: Delivers 400 W pulse handling with fast <1 ns response, complementing slower secondary protectors while surviving repeated 10/1000 µs strikes per IEC 61000-4-5. | Use Scenario: Shielding gate drivers and MCU I/O on washing machine/dishwasher motor control boards from brush-commutator noise and relay bounce. IC Role / Device Role / Timing Role: Localized clamping on 12 V logic supply and H-bridge enable lines adjacent to MOSFETs. Use Value: Ensures functional safety by preventing false resets or latch-up during high-dI/dt commutation events, aided by low 3.5 V forward voltage at 25 A. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A | Same SMA package, 24 V VBR, but rated for 400 W (10/1000 µs); not AEC-Q101 qualified; higher VC = 38.9 V | Lacks automotive qualification; suitable for commercial/industrial only | Select when AEC-Q101 is not required and higher clamping voltage is acceptable |
| TPSMA24AHM3_A/H | Identical electrical specs and AEC-Q101 qualification; halogen-free construction; same HE3 pinout and thermal profile | No functional difference; differs only in material composition (halogen-free vs. RoHS-compliant) | Choose HM3 for halogen-free compliance mandates; otherwise HE3 meets standard RoHS and automotive requirements |
Compared with SMAJ24A and TPSMA24AHM3_A/H, the TPSMA24AHE3_A/H uniquely combines AEC-Q101 qualification, 33.2 V low clamping, and MSL Level 1 reflow compatibility in a cost-optimized RoHS-compliant variant - making it preferred for automotive Tier-1 production and high-reliability industrial designs where qualification and thermal margin are critical.
Availability
TPSMA24AHE3_A/H is available at Aetrix Electronics and suitable for automotive ECU power protection, industrial sensor interface circuits, telecom DC input stages, and consumer appliance motor drive boards requiring stable component supply and full traceability.
Supply support for TPSMA24AHE3_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, high-temperature, and automotive-grade solutions.
The TPSMAxxA family is engineered specifically for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 validation, 185 °C operation, and consistent 10/1000 µs surge performance are mandatory.
FAQ
What is the clamping voltage of the TPSMA24AHE3_A/H under a 400 W transient?
The TPSMA24AHE3_A/H has a maximum clamping voltage (VC) of 33.2 V at 12.0 A, corresponding to the 400 W peak pulse power rating using the standardized 10/1000 µs waveform. This value is measured per JEDEC test conditions and ensures predictable overvoltage limiting for downstream components such as regulators or microcontrollers in the protected circuit.
Is the TPSMA24AHE3_A/H qualified for automotive applications?
Yes, the TPSMA24AHE3_A/H is AEC-Q101 qualified, as confirmed by Vishay's documentation and indicated by the "HE3" suffix. It undergoes rigorous stress testing including temperature cycling, high-temperature operating life, and surge robustness - making it suitable for use in engine control units, body electronics, and ADAS subsystems where automotive-grade reliability is required.
What does the "HE3" suffix mean in TPSMA24AHE3_A/H?
The "HE3" suffix in TPSMA24AHE3_A/H denotes a RoHS-compliant, AEC-Q101 qualified version with matte tin-plated leads, JESD201 Class 2 whisker resistance, and MSL Level 1 rating. The "_A/H" indicates revision A in 7-inch tape-and-reel packaging (1800 units per reel), per Vishay's ordering nomenclature in document 88405.
Can the TPSMA24AHE3_A/H be used in bidirectional protection circuits?
No, the TPSMA24AHE3_A/H is unidirectional only, as explicitly stated in the Vishay datasheet. It conducts in forward bias and clamps reverse overvoltages - it cannot suppress positive and negative transients symmetrically. For bidirectional protection, a dedicated bidirectional TVS like SMAJ24CA or TPSMA24CA must be selected instead.
What is the maximum operating temperature for the TPSMA24AHE3_A/H?
The TPSMA24AHE3_A/H has a maximum junction temperature (TJ) of +185 °C, enabling reliable operation in high-temperature environments such as automotive under-hood locations or industrial motor drive enclosures. Its thermal performance is validated per JEDEC standards, and derating curves in the datasheet allow safe operation at elevated ambient temperatures when mounted per recommended pad layout.
TPSMA24AHE3_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):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 12A
- 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)
TPSMA24AHE3_A/H FAQ
1.How can I place an order for TPSMA24AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA24AHE3_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 TPSMA24AHE3_A/H reliable?
The price and inventory of TPSMA24AHE3_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 TPSMA24AHE3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMA24AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA24AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA24AHE3_A/H?
TPSMA24AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA24AHE3_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 TPSMA24AHE3_A/H?
For technical support, including TPSMA24AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA24AHE3_A/H requirements.
6.How does Aetrix verify that TPSMA24AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMA24AHE3_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 TPSMA24AHE3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMA24AHE3_A/H?
All TPSMA24AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA24AHE3_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 TPSMA24AHE3_A/H part is unused and in its original packaging.
Return procedure for TPSMA24AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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