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Vishay General Semiconductor - Diodes Division TPSMA27AHE3_A/I
- Part No.:
- TPSMA27AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA27AHE3_A/I.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,374
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Product details
Overview
TPSMA27AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for clamping inductive load switching and lightning-induced transients. It features a 27 V breakdown voltage (VBR = 25.7–28.4 V), 37.5 V maximum clamping voltage at 10.7 A, 400 W peak pulse power (10/1000 µs), and operates up to +185 °C junction temperature. It protects MOSFETs and signal lines in automotive sensor units.
For engineers reviewing the TPSMA27AHE3_A/I datasheet, TPSMA27AHE3_A/I pinout, TPSMA27AHE3_A/I application, or TPSMA27AHE3_A/I equivalent, key selection criteria include unidirectional polarity, SMA (DO-214AC) package compatibility, AEC-Q101 qualification, 23.1 V stand-off voltage, and low incremental surge resistance for robust ESD/surge immunity in high-reliability embedded systems.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology with junction passivation optimized for stable clamping under repetitive surge stress. Its 10/1000 µs waveform rating supports 400 W peak pulse power at 0.01 % duty cycle, and thermal derating follows Fig. 2 for operation above 25 °C ambient.
The device exhibits fast response time and low dynamic impedance, enabling effective suppression of sub-microsecond transients. Its 0.087 %/°C temperature coefficient of VBR ensures predictable voltage shift across the -65 °C to +185 °C operating range, critical for automotive under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 25.7 V / 27.0 V / 28.4 V - precise breakdown threshold for reliable overvoltage triggering |
| VWM | 23.1 V - maximum continuous reverse working voltage before leakage exceeds 1 μA |
| VC @ IPPM | 37.5 V - clamped voltage at 10.7 A peak pulse current, defining worst-case protection level |
| PPPM | 400 W - surge energy handling capacity per 10/1000 µs waveform, validated on 5 mm × 5 mm copper pads |
| TJ max. | +185 °C - enables use in high-temperature automotive environments without derating loss |
| Polarity | Unidirectional - blocks reverse conduction until breakdown, suitable for DC-biased signal/power lines |
| Package | SMA (DO-214AC) - industry-standard SMD outline with cathode band marking and MSL Level 1 rating |
Pinout & Package
SMA (DO-214AC) package: surface-mount, molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, cathode indicated by color band. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H), 2.54 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal PN junction | Connected to protected line; conducts when transient exceeds VBR, shunting current to ground |
| Anode (non-banded end) | Cathode of internal PN junction | Typically tied to system ground or lower-potential reference; completes clamping path during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock |
| 185 °C junction capability | Enables placement near heat sources (e.g., power converters, engine control modules) without thermal derating |
| 400 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/5a surges and IEC 61000-4-5 combination wave tests |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns rise time), improving protection margin |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning or dry-pack requirements |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive kickback in engine control units. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between signal line and chassis ground, triggered within <1 ns to limit voltage to ≤37.5 V. Use Value: Prevents damage to 3.3 V/5 V interface ICs while maintaining signal integrity due to low capacitance and fast response. | Use Scenario: Shielding digital input modules in programmable logic controllers from 24 V DC field wiring transients caused by relay coil de-energization. IC Role / Device Role / Timing Role: Standoff-rated TVS (VWM = 23.1 V) placed across input terminals to absorb 400 W surges without false triggering during normal operation. Use Value: Eliminates need for external series resistors or RC filters, reducing BOM count and PCB area while meeting IEC 61000-4-4 Level 4 immunity. |
| Consumer Power Adapter Input | Telecom Line Card Surge Suppression |
Use Scenario: Safeguarding AC-DC adapter primary-side rectifiers and controller ICs against lightning-induced surges entering via mains input. IC Role / Device Role / Timing Role: High-energy TVS mounted after fuse and common-mode choke, clamping differential-mode spikes before they reach downstream components. Use Value: Achieves UL 1449 Type 4 SPD compliance with single-device solution, leveraging 400 W rating and 185 °C thermal stability. | Use Scenario: Protecting Ethernet PHY interfaces and PoE injectors on telecom line cards from induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Bidirectional-capable design not applicable; this unidirectional variant used on DC-biased auxiliary power rails (e.g., +12 V bias for active baluns). Use Value: Provides precise 23.1 V standoff with minimal leakage (<1 μA), avoiding interference with 10/100/1000BASE-T link training and auto-negotiation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ27A | Same SMA package, 27 V VBR, but rated for 400 W only at 25 °C; no AEC-Q101 qualification; TJ max = 150 °C | Not suitable for automotive under-hood use; limited to commercial/industrial ambient conditions | Select SMAJ27A only if AEC-Q101 and >150 °C operation are not required |
| SMCJ27A | Larger SMC (DO-214AB) package; same 27 V VBR; higher 1500 W PPPM; TJ max = 175 °C; AEC-Q101 available in HE3 suffix | Requires larger PCB footprint; suited for higher-energy threats where 400 W is insufficient | Choose SMCJ27A when surge threat level exceeds IEC 61000-4-5 Line-to-Line 2 kV or when layout allows larger package |
Compared with SMAJ27A, TPSMA27AHE3_A/I delivers automotive-grade reliability and extended temperature operation; versus SMCJ27A, it offers space-constrained designs with verified 400 W capability in the smaller SMA outline, though with lower absolute energy handling.
Availability
TPSMA27AHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor units, industrial PLC I/O modules, and consumer power adapter inputs requiring stable component supply, AEC-Q101 compliance, and high-temperature operational continuity.
Supply support for TPSMA27AHE3_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, efficiency, and application-specific performance.
The TPSMA series belongs to Vishay's PAR® (Protected Anisotropic Rectifier) transient voltage suppressor family, engineered for high-temperature stability and repeatable clamping in automotive, industrial, and telecom surge protection applications.
FAQ
What is the exact breakdown voltage range for TPSMA27AHE3_A/I?
The TPSMA27AHE3_A/I has a guaranteed breakdown voltage (VBR) range of 25.7 V to 28.4 V at 1.0 mA test current, with a nominal value of 27.0 V. This specification is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet Document Number 88405, Revision 23-Jan-2024. The TPSMA27AHE3_A/I maintains this tolerance across its full operating temperature range.
Is TPSMA27AHE3_A/I qualified for automotive applications?
Yes, TPSMA27AHE3_A/I is AEC-Q101 qualified and explicitly designated for automotive use, as indicated by the "HE3" suffix and documentation in the Vishay datasheet. It meets requirements for temperature cycling, mechanical shock, and high-temperature operation up to +185 °C junction temperature, making it suitable for engine control, ADAS sensors, and body electronics where TPSMA27AHE3_A/I is deployed.
What is the maximum clamping voltage of TPSMA27AHE3_A/I at its rated peak pulse current?
The TPSMA27AHE3_A/I clamps to a maximum of 37.5 V at its rated peak pulse current of 10.7 A (10/1000 µs waveform). This value defines the upper voltage limit imposed on protected circuitry during surge events and is measured under standardized test conditions specified in the Vishay datasheet. The TPSMA27AHE3_A/I achieves this with low dynamic impedance and fast response.
Does TPSMA27AHE3_A/I have unidirectional or bidirectional polarity?
TPSMA27AHE3_A/I is a unidirectional TVS diode, meaning it conducts only in reverse bias above its breakdown voltage and blocks forward current like a standard rectifier. Polarity is marked by a cathode band on the SMA package. This configuration is appropriate for DC-biased lines such as automotive sensor supplies or industrial 24 V inputs, where TPSMA27AHE3_A/I provides targeted overvoltage protection.
What package type and moisture sensitivity level does TPSMA27AHE3_A/I use?
TPSMA27AHE3_A/I uses the SMA (DO-214AC) surface-mount package with matte tin-plated leads and meets MSL Level 1 per J-STD-020, allowing unlimited floor life and compatibility with standard lead-free reflow profiles peaking at 260 °C. The package dimensions and pad layout are fully documented in the Vishay datasheet, ensuring reliable assembly for TPSMA27AHE3_A/I in high-volume manufacturing.
TPSMA27AHE3_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):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 10.7A
- 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)
TPSMA27AHE3_A/I FAQ
1.How can I place an order for TPSMA27AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA27AHE3_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 TPSMA27AHE3_A/I reliable?
The price and inventory of TPSMA27AHE3_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 TPSMA27AHE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMA27AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA27AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA27AHE3_A/I?
TPSMA27AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA27AHE3_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 TPSMA27AHE3_A/I?
For technical support, including TPSMA27AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA27AHE3_A/I requirements.
6.How does Aetrix verify that TPSMA27AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMA27AHE3_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 TPSMA27AHE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMA27AHE3_A/I?
All TPSMA27AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA27AHE3_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 TPSMA27AHE3_A/I part is unused and in its original packaging.
Return procedure for TPSMA27AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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