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Vishay General Semiconductor - Diodes Division TPSMA27HE3_A/H
- Part No.:
- TPSMA27HE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA27HE3_A/H.pdf
- Description:
- TVS DIODE 21.8VWM 39.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,191
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Product details
Overview
TPSMA27HE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, with 27 V nominal breakdown voltage (VBR), 37.5 V maximum clamping voltage (VC) at 10.7 A peak pulse current, and 400 W peak pulse power rating per 10/1000 µs waveform - used to protect MOSFETs and signal lines in automotive power electronics against lightning-induced transients.
For engineers reviewing the TPSMA27HE3_A/H datasheet, TPSMA27HE3_A/H pinout, TPSMA27HE3_A/H application, or TPSMA27HE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 185 °C junction temperature rating, low incremental surge resistance, and compatibility with automated SMT assembly under J-STD-020 MSL level 1.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuit nodes, triggering when reverse voltage exceeds its 25.7–28.4 V breakdown range (VBR at 1 mA). Its fast response time and low dynamic impedance ensure effective suppression of sub-microsecond transients induced by inductive switching or ESD events.
Designed for high-reliability environments, the TPSMA27HE3_A/H features passivated anisotropic rectifier technology, supports continuous operation up to +185 °C junction temperature, and meets automotive-grade reliability standards including AEC-Q101 qualification and JESD 201 Class 2 whisker resistance.
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 for avalanche conduction onset |
| VWM | 23.1 V - maximum continuous reverse working voltage before leakage rises above 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 transient energy absorption capability |
| TJ max. | +185 °C - enables use in under-hood automotive modules without derating |
| Polarity | Unidirectional - protects against negative transients only; cathode marked by band |
| Package | SMA (DO-214AC) - industry-standard SMT outline with 5.0 mm × 5.0 mm thermal pad footprint |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case with matte tin-plated leads solderable per J-STD-002. Cathode identified by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage event |
| Anode | Reference node | Typically tied to system ground or low-impedance return path to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics |
| 185 °C junction temperature rating | Enables deployment in high-temperature zones without thermal derating penalties |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin |
| Passivated anisotropic rectifier design | Ensures stable VBR over lifetime and temperature, reducing parameter drift |
Applications
| Automotive Power Module Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting gate drivers and high-side switches in 12 V/24 V automotive power distribution modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Parallel-connected clamping TVS that diverts transient energy away from MOSFET gates and controller ICs during inductive kick events. Use Value: Limits gate-source voltage to ≤37.5 V during 400 W surges, preventing oxide breakdown and ensuring long-term reliability per AEC-Q101. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA, 0–10 V) of industrial pressure and temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: Bidirectional protection element placed at sensor PCB edge connector to shunt ESD and cable discharge events. Use Value: Clamps transients within 1 ns while maintaining <1 μA leakage at 23.1 V, preserving signal integrity and measurement accuracy. |
| Telecom DC Power Input Protection | Computer Peripheral USB Port Protection |
Use Scenario: Secondary-level surge protection on -48 V DC telecom power inputs subjected to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp negative-going transients. Use Value: Withstands repetitive 400 W pulses at 0.01 % duty cycle, supporting robust front-end protection without thermal runaway. | Use Scenario: Overvoltage protection for USB 2.0 data lines (D+/D−) in docking stations and external hubs operating in noisy office environments. IC Role / Device Role / Timing Role: Low-capacitance clamping diode integrated into USB signal path to suppress ESD per IEC 61000-4-2 Level 4. Use Value: Delivers 37.5 V clamping at 10.7 A while exhibiting minimal parasitic capacitance, avoiding signal integrity degradation. |
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 thermal mass | Higher power handling, larger footprint; suited for board space-constrained designs requiring >400 W margin | Select when higher surge endurance is needed and PCB layout allows larger 4.5 mm × 3.9 mm outline |
| 1.5SMC27A | Same VBR, but SMC (DO-214AB) package; 1500 W PPPM, higher IPPM (38.2 A) | Designed for primary-level AC/DC input protection; not optimized for fine-pitch SMT placement | Choose for front-end mains-side protection where board space and thermal dissipation allow larger 7.1 mm × 6.2 mm footprint |
Compared with SMBJ27A and 1.5SMC27A, the TPSMA27HE3_A/H offers optimal balance of AEC-Q101 compliance, MSL Level 1 reflow compatibility, and compact SMA footprint - making it preferred for space-limited, high-temperature automotive and industrial control modules where 400 W clamping suffices.
Availability
TPSMA27HE3_A/H is available at Aetrix Electronics and suitable for automotive power modules, industrial sensor interfaces, telecom DC inputs, and computer peripheral protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPSMA27HE3_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, high-temperature performance, and automotive qualification.
The TPSMA series belongs to Vishay's PAR® (Protected Avalanche Rectifier) transient voltage suppressor family, engineered specifically for robust, high-temperature-stable clamping in automotive, industrial, and telecom infrastructure applications.
FAQ
What is the breakdown voltage tolerance of the TPSMA27HE3_A/H?
The TPSMA27HE3_A/H has a specified breakdown voltage (VBR) range of 25.7 V (minimum) to 28.4 V (maximum) at 1 mA test current, with 27.0 V as the nominal value. This ±5 % tolerance ensures consistent clamping behavior across production lots and supports reliable design margining in automotive and industrial circuits.
Is the TPSMA27HE3_A/H RoHS-compliant and halogen-free?
Yes, the TPSMA27HE3_A/H carries the HE3 suffix, indicating it is RoHS-compliant and AEC-Q101 qualified. It is not halogen-free; for halogen-free compliance, the HM3 suffix variant (e.g., TPSMA27HM3_A/H) must be selected, as confirmed in Vishay's ordering information table and material categorization documentation.
What is the maximum clamping voltage of the TPSMA27HE3_A/H under surge conditions?
The TPSMA27HE3_A/H exhibits a maximum clamping voltage (VC) of 37.5 V at 10.7 A peak pulse current (IPPM) using the standardized 10/1000 µs waveform. This value is measured under specified mounting conditions (0.2″ × 0.2″ copper pads) and defines the upper voltage limit imposed on protected circuitry during transient events.
Does the TPSMA27HE3_A/H support lead-free reflow soldering?
Yes, the TPSMA27HE3_A/H meets J-STD-020 MSL Level 1 with a maximum peak reflow temperature of 260 °C, making it fully compatible with standard lead-free soldering processes. Its matte tin-plated terminals comply with J-STD-002 and JESD 22-B102, ensuring reliable wetting and intermetallic formation.
How does the TPSMA27HE3_A/H differ from the TPSMA27A without the HE3 suffix?
The TPSMA27HE3_A/H includes the HE3 suffix, denoting RoHS compliance and AEC-Q101 qualification - critical for automotive and high-reliability industrial use. The base TPSMA27A lacks these certifications and may not meet automotive stress testing or environmental compliance requirements, even though electrical parameters are identical.
TPSMA27HE3_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):
- 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_A/H FAQ
1.How can I place an order for TPSMA27HE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA27HE3_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 TPSMA27HE3_A/H reliable?
The price and inventory of TPSMA27HE3_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 TPSMA27HE3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMA27HE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA27HE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA27HE3_A/H?
TPSMA27HE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA27HE3_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 TPSMA27HE3_A/H?
For technical support, including TPSMA27HE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA27HE3_A/H requirements.
6.How does Aetrix verify that TPSMA27HE3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMA27HE3_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 TPSMA27HE3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMA27HE3_A/H?
All TPSMA27HE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA27HE3_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 TPSMA27HE3_A/H part is unused and in its original packaging.
Return procedure for TPSMA27HE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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