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Vishay General Semiconductor - Diodes Division TPSMA24HE3_A/I
- Part No.:
- TPSMA24HE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA24HE3_A/I.pdf
- Description:
- TVS DIODE 19.4VWM 34.7VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,679
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Product details
Overview
TPSMA24HE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching and lightning-induced transients on power rails and signal lines. It features a 24.0 V nominal breakdown voltage (VBR), 33.2 V maximum clamping voltage (VC) at 12.0 A peak pulse current, 400 W peak pulse power (10/1000 µs), and operates up to +185 °C junction temperature - deployed in automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the TPSMA24HE3_A/I datasheet, TPSMA24HE3_A/I pinout, TPSMA24HE3_A/I application, or TPSMA24HE3_A/I 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 uses passivated anisotropic rectifier technology with junction passivation optimized for high-reliability operation. Its unidirectional architecture provides low incremental surge resistance and fast response time to suppress transient overvoltages before downstream components are damaged.
The device is rated for 400 W peak pulse power per 10/1000 µs waveform at TA = 25 °C, derated linearly above that temperature per Figure 2. It meets MSL Level 1 per J-STD-020 and supports reflow soldering up to 260 °C peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 22.8 V / 24.0 V / 25.2 V at IT = 1.0 mA - defines precise voltage threshold where avalanche conduction begins |
| VWM | 20.5 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 33.2 V at 12.0 A - clamping voltage during full-rated 400 W transient, limiting stress on protected ICs |
| PPPM | 400 W - peak pulse power handling capability under standardized 10/1000 µs waveform |
| TJ max. | +185 °C - enables use in under-hood automotive and high-temperature industrial environments |
| Polarity | Unidirectional - protects against positive transients only; cathode marked by band |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 0.208" x 0.157" footprint and 0.074" height |
Pinout & Package
TPSMA24HE3_A/I is housed in an SMA (DO-214AC) plastic package with two terminals: anode and cathode. The cathode is identified by a color band on the body. Leads are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane to complete clamping path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Junction passivation | Optimized anisotropic rectifier process ensures stable VBR and low leakage over lifetime |
| MSL Level 1 | Moisture sensitivity level compliant - no bake required prior to reflow up to 260 °C peak |
| Low incremental surge resistance | Enables tighter clamping (VC − VBR = 9.2 V) and faster energy dissipation |
| High TJ capability | 185 °C max junction temperature supports placement near heat sources without derating |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 24 V CAN bus power inputs and microcontroller supply rails from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between VIN and GND, triggered within nanoseconds of overvoltage onset. Use Value: Limits transient voltage to ≤33.2 V, preventing damage to 3.3 V/5 V logic and CAN transceivers while maintaining AEC-Q101 compliance. |
Use Scenario: Safeguarding analog front-end inputs of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Transient suppression on 0–10 V or 4–20 mA signal lines exposed to relay coil switching noise. Use Value: Clamps induced spikes below sensor IC absolute maximum ratings using <1 µA leakage at 20.5 V operating voltage. |
| Consumer Power Adapter Output | Telecom DC Power Distribution |
Use Scenario: Secondary-side overvoltage protection on 19–24 V output rails of laptop AC/DC adapters. IC Role / Device Role / Timing Role: Standby-mode TVS across output capacitor, activated only during fault conditions. Use Value: Absorbs 400 W surges without degradation, preserving adapter reliability under repeated lightning-induced line transients. |
Use Scenario: DC input protection for 48 V telecom equipment boards subjected to hot-swap and battery backup switching events. IC Role / Device Role / Timing Role: Primary transient shunt on main 48 V feed, coordinated with upstream fuses and secondary regulators. Use Value: Maintains clamping performance at elevated ambient temperatures up to +85 °C with no derating until TJ > 25 °C. |
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 VBR (22.8–25.2 V), but lower PPPM = 400 W (same rating), non-AEC-Q101 qualified, MSL Level 1 confirmed | Not validated for automotive use; suitable for industrial/commercial designs without AEC requirements | Select SMAJ24A when AEC-Q101 qualification is not required and cost optimization is prioritized |
| SMCJ24A | Higher PPPM = 1500 W, same VBR, larger SMC (DO-214AB) package, AEC-Q101 available in HE3 variant | Requires PCB layout change due to 2.5× larger footprint; used where higher surge margin is mandatory | Choose SMCJ24A only if system-level surge testing exceeds IEC 61000-4-5 Level 4 and SMA footprint is insufficient |
Compared with SMAJ24A and SMCJ24A, TPSMA24HE3_A/I uniquely combines AEC-Q101 qualification, SMA footprint, and guaranteed 185 °C operation - making it optimal for space-constrained automotive modules where thermal robustness and qualification traceability are mandatory.
Availability
TPSMA24HE3_A/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface design, and telecom DC distribution requiring stable component supply and long-term lifecycle support.
Supply support for TPSMA24HE3_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 is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and high-temperature performance.
The TPSMA24HE3_A/I belongs to Vishay's PAR® family of surface-mount TVS diodes, engineered specifically for high-reliability transient suppression in automotive, industrial, and telecom systems operating under extreme thermal and electrical stress.
FAQ
What is the clamping voltage of TPSMA24HE3_A/I at its rated peak pulse current?
The TPSMA24HE3_A/I has a maximum clamping voltage (VC) of 33.2 V at 12.0 A peak pulse current (IPPM), measured under the standard 10/1000 µs waveform. This value ensures protected downstream components-such as 3.3 V or 5 V microcontrollers-remain within safe operating limits during transient events. The clamping performance is guaranteed across the full operating temperature range and is validated per ANSI/IEEE C62.35 standards.
Is TPSMA24HE3_A/I qualified to AEC-Q101?
Yes, TPSMA24HE3_A/I is AEC-Q101 qualified. The HE3 suffix explicitly denotes RoHS-compliant and AEC-Q101 qualified construction, verified through stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD. This qualification makes TPSMA24HE3_A/I suitable for automotive applications such as body control modules, infotainment power supplies, and ADAS sensor interfaces where reliability under harsh conditions is mandatory.
What does the "A/I" suffix in TPSMA24HE3_A/I indicate?
The "A/I" suffix in TPSMA24HE3_A/I specifies the revision code ("A") and packaging format ("I"). "I" denotes 13-inch diameter plastic tape and reel with a base quantity of 7500 units - optimized for high-volume SMT assembly. The "A" revision reflects the latest controlled manufacturing release per Vishay Document Number 88405 (Revision: 23-Jan-2024), ensuring consistency in electrical parameters and mechanical dimensions.
Can TPSMA24HE3_A/I be used in bidirectional configurations?
No, TPSMA24HE3_A/I is unidirectional only, as confirmed in the Vishay datasheet. It conducts avalanche current only when the cathode is driven positive relative to the anode. For bidirectional transient suppression, a separate device such as the TPSMA24CA (center-tapped or dual-diode configuration) would be required. Using TPSMA24HE3_A/I in reverse-biased AC applications risks permanent failure due to lack of reverse conduction capability.
What is the maximum junction temperature rating for TPSMA24HE3_A/I?
The TPSMA24HE3_A/I is rated for a maximum junction temperature (TJ) of +185 °C, enabling operation in high-temperature environments such as engine compartments or enclosed industrial enclosures. This rating is supported by its passivated anisotropic rectifier structure and thermal design compatible with standard PCB copper pad layouts (0.2" × 0.2" per terminal). Derating curves in Figure 2 apply above TA = 25 °C.
TPSMA24HE3_A/I 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/I FAQ
1.How can I place an order for TPSMA24HE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA24HE3_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 TPSMA24HE3_A/I reliable?
The price and inventory of TPSMA24HE3_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 TPSMA24HE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMA24HE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA24HE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA24HE3_A/I?
TPSMA24HE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA24HE3_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 TPSMA24HE3_A/I?
For technical support, including TPSMA24HE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA24HE3_A/I requirements.
6.How does Aetrix verify that TPSMA24HE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMA24HE3_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 TPSMA24HE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMA24HE3_A/I?
All TPSMA24HE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA24HE3_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 TPSMA24HE3_A/I part is unused and in its original packaging.
Return procedure for TPSMA24HE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA24HE3_A/I Tags
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