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Vishay General Semiconductor - Diodes Division TPSMA27HE3/61T
- Part No.:
- TPSMA27HE3/61T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA27HE3/61T.pdf
- Description:
- TVS DIODE 21.8VWM 39.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,591
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Product details
Overview
TPSMA27HE3/61T from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 27 V nominal breakdown voltage (VBR = 25.7–28.4 V at 1 mA), 37.5 V maximum clamping voltage (VC) at 10.7 A peak pulse current, 400 W peak pulse power (10/1000 µs), and operates up to +185 °C junction temperature - ideal for automotive power rail protection.
For engineers reviewing the TPSMA27HE3/61T datasheet, TPSMA27HE3/61T pinout, TPSMA27HE3/61T application, or TPSMA27HE3/61T equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, clamping performance under 10/1000 µs surge, thermal derating above 25 °C, and compatibility with standard SMA PCB footprints.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its unidirectional structure provides forward conduction capability while clamping reverse transients, with a typical temperature coefficient of VBR at +0.087 %/°C.
The device meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), supports 40 A non-repetitive forward surge current (8.3 ms half-sine), and delivers stable clamping down to -65 °C, making it suitable for under-hood automotive environments and industrial control I/O protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 25.7 V / 27.0 V / 28.4 V at 1 mA - defines precise voltage threshold where avalanche conduction begins |
| VWM | 23.1 V - maximum continuous reverse working voltage before leakage exceeds 1 µA |
| VC @ IPPM | 37.5 V at 10.7 A - clamped voltage during 400 W transient, limiting stress on downstream ICs |
| PPPM | 400 W (10/1000 µs waveform) - peak surge energy handling capacity under standardized lightning-like pulse |
| TJ max. | +185 °C - enables operation in high-ambient automotive and industrial power supply locations |
| Polarity | Unidirectional - allows forward conduction and reverse transient clamping, not bidirectional |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with cathode band marking and 0.2" × 0.2" copper pad requirement |
Pinout & Package
TPSMA27HE3/61T is housed in an SMA (DO-214AC) package with two terminals: anode and cathode, marked by a color band at the cathode end. The device requires minimum recommended PCB pad layout (0.2" × 0.2" copper per terminal) for rated thermal and surge performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient clamp output node | Connected to protected line; conducts avalanche current to anode when reverse voltage exceeds VBR |
| Anode | Reference/return path | Typically tied to ground or lower-potential rail; completes current path during clamping event |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per AEC standard |
| Junction passivation | Optimized die surface treatment ensures stable VBR and low leakage over lifetime and temperature |
| MSL Level 1 | Zero moisture sensitivity - safe for standard SMT reflow without baking (peak 260 °C) |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for sensitive loads |
| 185 °C TJ rating | Enables placement near heat sources (e.g., power MOSFETs, DC/DC converters) without derating penalties |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
|
Use Scenario: Protecting 24 V battery-fed ECUs against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges up to ±100 V. Use Value: Limits voltage seen by downstream PMICs and microcontrollers to ≤37.5 V during 400 W pulses, preventing latch-up or damage. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and switching noise in factory automation. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across differential signal pair to shunt fast transients (<1 ns rise time). Use Value: Maintains signal integrity with <1 µA leakage at 23.1 V, enabling accurate sub-mV measurements without offset drift. |
| Consumer Power Adapter Input Stage | Telecom DC Power Interface |
|
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters powering USB-C PD devices. IC Role / Device Role / Timing Role: Standoff-rated TVS on 5–20 V output rails to absorb coupling spikes from primary-side switching. Use Value: Withstands repetitive 400 W pulses at 0.01% duty cycle, ensuring long-term reliability without degradation. |
Use Scenario: Front-end protection of PoE-powered equipment (e.g., IP cameras, access points) against Ethernet surge events. IC Role / Device Role / Timing Role: Unidirectional TVS on DC input (typically 48 V) referenced to local ground plane. Use Value: Clamps induced surges to 37.5 V within nanoseconds, meeting IEC 61000-4-5 Level 4 requirements when combined with series impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27A | Same VBR range (25.7–28.4 V), but SMB package (DO-214AA); 600 W PPPM, higher IPPM (17.3 A) | Larger footprint; better suited for higher-energy transients where board space permits | Select SMBJ27A if surge energy exceeds 400 W or thermal mass requirements demand larger package |
| TPSMA27AHM3/61T | Identical electrical specs; halogen-free molding compound and whisker-tested matte tin plating | Required for RoHS-compliant, halogen-free BOMs in EU/Asia automotive programs | Choose TPSMA27AHM3/61T when material compliance (IEC 61249-2-21) or JESD201 Class 2 whisker resistance is mandated |
Compared with SMBJ27A and TPSMA27AHM3/61T, the TPSMA27HE3/61T offers optimal balance of AEC-Q101 qualification, compact SMA footprint, and cost-effective RoHS compliance - making it preferred for space-constrained automotive modules and industrial controllers where halogen-free is optional.
Availability
TPSMA27HE3/61T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power supplies requiring stable component supply with full traceability and lifecycle support.
Supply support for TPSMA27HE3/61T 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 high-reliability diodes, rectifiers, and protection devices for demanding environments.
The TPSMA27HE3/61T belongs to Vishay's PAR® TVS family, engineered specifically for robust transient suppression in automotive, industrial, and telecom systems where high-temperature operation and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of the TPSMA27HE3/61T under a 10/1000 µs surge?
The TPSMA27HE3/61T has a maximum clamping voltage (VC) of 37.5 V at 10.7 A peak pulse current, measured using the standardized 10/1000 µs waveform. This value ensures downstream components see limited overvoltage during surge events, and it is guaranteed across the full operating temperature range per Vishay Document 88405.
Is the TPSMA27HE3/61T AEC-Q101 qualified?
Yes, the TPSMA27HE3/61T is AEC-Q101 qualified - confirmed in Vishay's official documentation (Document 88405, Revision 23-Jan-2024). The HE3 suffix denotes RoHS-compliant, AEC-Q101-qualified construction, validated for automotive use including temperature cycling, highly accelerated life testing, and ESD robustness.
What does the "61T" suffix mean in TPSMA27HE3/61T?
The "61T" suffix in TPSMA27HE3/61T indicates tape-and-reel packaging per Vishay's ordering convention: "61" refers to the specific reel size and orientation, and "T" denotes that the part is supplied in 7-inch diameter plastic tape and reel format with 1800 units per reel - matching the preferred package code "H" in the ordering table.
Can the TPSMA27HE3/61T be used in bidirectional configurations?
No, the TPSMA27HE3/61T is unidirectional only, as explicitly stated in the Vishay datasheet. It conducts in forward bias and clamps reverse transients above VBR; for bidirectional protection, a separate device such as the TPSMA27CA or dual-series configuration would be required.
What is the maximum junction temperature rating for the TPSMA27HE3/61T?
The TPSMA27HE3/61T is rated for a maximum junction temperature (TJ) of +185 °C, enabling reliable operation in high-ambient environments like engine compartments or enclosed industrial enclosures. Derating curves in Figure 2 of Document 88405 define allowable power reduction above 25 °C ambient.
TPSMA27HE3/61T 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):
- 21.8V
- Voltage - Breakdown (Min):
- 24.3V
- Voltage - Clamping (Max) @ Ipp:
- 39.1V
- Current - Peak Pulse (10/1000µs):
- 10.2A
- 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)
TPSMA27HE3/61T FAQ
1.How can I place an order for TPSMA27HE3/61T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA27HE3/61T 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 TPSMA27HE3/61T reliable?
The price and inventory of TPSMA27HE3/61T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA27HE3/61T is usually 5 days.
3.What payment methods are accepted for TPSMA27HE3/61T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA27HE3/61T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA27HE3/61T?
TPSMA27HE3/61T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA27HE3/61T 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 TPSMA27HE3/61T?
For technical support, including TPSMA27HE3/61T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA27HE3/61T requirements.
6.How does Aetrix verify that TPSMA27HE3/61T is sourced from the original manufacturer or authorized distributors?
All TPSMA27HE3/61T 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 TPSMA27HE3/61T meets industry standards.
7.What is the process for return or replacement of TPSMA27HE3/61T?
All TPSMA27HE3/61T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA27HE3/61T, 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 TPSMA27HE3/61T part is unused and in its original packaging.
Return procedure for TPSMA27HE3/61T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA27HE3/61T Tags
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