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Vishay General Semiconductor - Diodes Division TPSMA24AHE3/61T
- Part No.:
- TPSMA24AHE3/61T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA24AHE3/61T.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,329
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Product details
Overview
TPSMA24AHE3/61T from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, rated for 24 V breakdown voltage (VBR = 22.8–25.2 V at 1 mA), 400 W peak pulse power (10/1000 µs), and 12.0 V clamping voltage (VC) at 12 A peak pulse current. It protects MOSFETs and ICs in automotive power supply rails against lightning-induced transients and inductive switching surges.
For engineers reviewing the TPSMA24AHE3/61T datasheet, TPSMA24AHE3/61T pinout, TPSMA24AHE3/61T application, or TPSMA24AHE3/61T equivalent, key selection criteria include its AEC-Q101 qualification, 185 °C maximum junction temperature, unidirectional polarity, low clamping ratio (VC/VBR ≈ 0.5), and MSL Level 1 moisture sensitivity rating.
Technical Context
The TPSMA24AHE3/61T employs passivated anisotropic rectifier technology to achieve stable avalanche breakdown with ±5% VBR tolerance and 0.085 %/°C temperature coefficient. Its junction design supports operation up to 185 °C, enabling use in under-hood automotive environments without derating penalties below 150 °C.
It delivers 400 W peak pulse power under standardized 10/1000 µs waveform conditions with 0.01% duty cycle, and clamps reverse transients to ≤33.2 V at 12 A - critical for safeguarding 24 V nominal systems where rail voltage can exceed 30 V during load dump.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 22.8 V / 24.0 V / 25.2 V at 1 mA - defines precise avalanche initiation threshold for predictable overvoltage protection in 24 V systems |
| VWM | 20.5 V - maximum continuous reverse working voltage; ensures no conduction during normal 24 V rail operation with margin |
| VC @ IPPM | 33.2 V at 12 A - clamping voltage limits transient energy delivered to downstream circuitry during surge events |
| PPPM | 400 W (10/1000 µs) - sustains high-energy transients common in automotive load-dump and ISO 7637-2 Pulse 5a scenarios |
| TJ max. | 185 °C - enables direct placement near hot components (e.g., power MOSFETs, DC/DC converters) without thermal derating |
| Polarity | Unidirectional - provides reverse-biased surge suppression only; requires correct orientation relative to protected rail |
| Package | SMA (DO-214AC) - industry-standard SMD outline with 0.208" x 0.157" footprint and matte tin-plated leads compliant with J-STD-002 |
Pinout & Package
TPSMA24AHE3/61T uses the SMA (DO-214AC) surface-mount package: molded epoxy case meeting UL 94 V-0, cathode indicated by a color band, and terminals designed for reflow soldering per J-STD-020 MSL Level 1 (peak 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current path input / transient return path | Connected to system ground or low-side reference; completes clamping loop during reverse surge |
| Cathode | Protected line connection / surge entry point | Connected to the 24 V rail or signal line being protected; avalanche conduction initiates here during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per AEC standard - required for engine control, body electronics, and ADAS modules |
| 185 °C junction rating | Eliminates need for thermal derating in high-ambient environments (e.g., under-hood ECUs), supporting extended lifetime at elevated temperatures |
| Low clamping ratio (VC/VBR = 1.38) | Minimizes voltage overshoot during clamping, reducing stress on downstream 30 V-rated MOSFETs and gate drivers |
| MSL Level 1 | Allows unlimited floor life and standard reflow profile (peak 260 °C) without baking - simplifies manufacturing and reduces cost |
| 400 W peak pulse power | Meets ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 5a (load dump) requirements for 24 V commercial vehicle systems |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Suppressing load-dump transients (up to 60 V, 400 ms) on 24 V battery-fed ECUs in trucks and construction equipment. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between 24 V rail and chassis ground to clamp overvoltage before it reaches DC/DC regulators and microcontrollers. Use Value: Prevents latch-up and permanent damage to 30 V-input PMICs and CAN transceivers during ISO 7637-2 Pulse 5a events. |
Use Scenario: Protecting analog output lines (e.g., 4–20 mA current loops) of pressure sensors in factory automation PLCs exposed to relay coil kickback. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across sensor output and return to absorb fast-rising inductive spikes (<100 ns rise time) without distorting signal integrity. Use Value: Maintains <1% full-scale error in precision current-loop measurements while surviving repetitive 600 W transients per IEC 61000-4-5. |
| Telecom DC Power Feeds | Computer Peripheral Port Protection |
|
Use Scenario: Safeguarding PoE-powered remote radio units (RRUs) fed via -48 V DC telecom supplies subject to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level unidirectional TVS on the -48 V input rail, upstream of DC/DC isolation stage, to shunt surge energy before it propagates into isolated domains. Use Value: Enables compliance with ITU-T K.20/21 immunity requirements for central office equipment without adding bulkier hybrid protectors. |
Use Scenario: Securing USB-C VBUS lines in docking stations handling hot-plug events and accidental 20 V adapter misconnections. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between VBUS and GND to clamp overvoltage before it damages USB PD controllers and port switches. Use Value: Limits VBUS excursion to ≤33.2 V during 10/1000 µs surges, preserving 20 V-rated silicon and avoiding brownout resets in host controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Same VBR range (22.8–25.2 V) and PPPM (600 W), but larger SMB (DO-214AA) package (0.236" × 0.157") and higher VC (38.9 V at 15.4 A) | Higher clamping voltage increases risk of overstressing 30 V-rated downstream devices; preferred where board space allows larger footprint and higher surge margin is needed | Select SMBJ24A only if 600 W rating is mandatory and layout accommodates larger pad area; TPSMA24AHE3/61T offers tighter clamping in constrained layouts |
| SMCJ24A | Same VBR, but 1500 W PPPM, DO-214AB package (0.285" × 0.236"), and VC = 39.4 V at 38.1 A | Designed for primary-level protection in high-energy industrial mains interfaces; excessive rating for point-of-load 24 V rail protection | Choose SMCJ24A for front-end AC/DC input stages; TPSMA24AHE3/61T is optimized for secondary-side, space-constrained, automotive-qualified point-of-load protection |
Compared with SMBJ24A and SMCJ24A, the TPSMA24AHE3/61T delivers superior clamping performance (33.2 V vs. ≥38.9 V) in the smallest footprint (SMA), making it optimal for dense automotive PCBs where thermal and spatial constraints demand high energy density and low VC.
Availability
TPSMA24AHE3/61T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power feed applications requiring stable component supply, AEC-Q101 compliance, and high-temperature reliability.
Supply support for TPSMA24AHE3/61T 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-qualified components.
The TPSMAxxA series was developed specifically for robust transient suppression in harsh-environment automotive and industrial systems, combining AEC-Q101 qualification, 185 °C operation, and tight parametric tolerances in compact SMA packages.
FAQ
What is the exact breakdown voltage range for TPSMA24AHE3/61T?
The TPSMA24AHE3/61T has a guaranteed breakdown voltage (VBR) range of 22.8 V to 25.2 V at 1 mA test current, with a typical value of 24.0 V. This specification is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet Document Number 88405, ensuring precise overvoltage triggering behavior in 24 V systems.
Is TPSMA24AHE3/61T qualified for automotive applications?
Yes, TPSMA24AHE3/61T is AEC-Q101 qualified - explicitly stated in the Vishay datasheet under "FEATURES" and "ORDERING INFORMATION". The HE3 suffix denotes RoHS-compliant and AEC-Q101 qualified construction, making it suitable for engine control, body electronics, and ADAS modules requiring certified reliability.
What is the clamping voltage of TPSMA24AHE3/61T at its rated peak pulse current?
The TPSMA24AHE3/61T clamps to a maximum of 33.2 V at 12 A peak pulse current (IPPM), measured under the standard 10/1000 µs waveform. This low VC ensures effective protection of 30 V-rated downstream components such as gate drivers and PMICs in 24 V power architectures.
Does TPSMA24AHE3/61T have unidirectional or bidirectional polarity?
TPSMA24AHE3/61T is unidirectional only, as confirmed in the "FEATURES" section of the Vishay datasheet. It conducts during reverse-biased overvoltage events only - the cathode band must be oriented toward the protected line, and it does not suppress positive-going transients on grounded lines.
What is the maximum operating junction temperature for TPSMA24AHE3/61T?
The TPSMA24AHE3/61T supports a maximum junction temperature (TJ) of +185 °C, verified per the "MAXIMUM RATINGS" table in the Vishay datasheet. This enables reliable operation in under-hood automotive locations and high-power industrial enclosures without thermal derating below 150 °C.
TPSMA24AHE3/61T 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)
TPSMA24AHE3/61T FAQ
1.How can I place an order for TPSMA24AHE3/61T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA24AHE3/61T 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 TPSMA24AHE3/61T reliable?
The price and inventory of TPSMA24AHE3/61T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA24AHE3/61T is usually 5 days.
3.What payment methods are accepted for TPSMA24AHE3/61T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA24AHE3/61T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA24AHE3/61T?
TPSMA24AHE3/61T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA24AHE3/61T 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 TPSMA24AHE3/61T?
For technical support, including TPSMA24AHE3/61T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA24AHE3/61T requirements.
6.How does Aetrix verify that TPSMA24AHE3/61T is sourced from the original manufacturer or authorized distributors?
All TPSMA24AHE3/61T 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 TPSMA24AHE3/61T meets industry standards.
7.What is the process for return or replacement of TPSMA24AHE3/61T?
All TPSMA24AHE3/61T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA24AHE3/61T, 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 TPSMA24AHE3/61T part is unused and in its original packaging.
Return procedure for TPSMA24AHE3/61T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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