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Vishay General Semiconductor - Diodes Division TPSMA27AHE3_B/I
- Part No.:
- TPSMA27AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA27AHE3_B/I.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,200
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Product details
Overview
TPSMA27AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in SMA (DO-214AC) package, designed for clamping inductive switching and lightning-induced transients. It features 27.0 V nominal breakdown voltage (VBR), 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 - deployed in automotive sensor signal lines and industrial I/O protection.
For engineers reviewing the TPSMA27AHE3_B/I datasheet, TPSMA27AHE3_B/I pinout, TPSMA27AHE3_B/I application, or TPSMA27AHE3_B/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, 23.1 V stand-off voltage (VWM), low 1.0 μA reverse leakage at VWM, and compatibility with high-reliability PCB layouts using 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping under repetitive surge conditions. Its 10/1000 μs waveform rating of 400 W and 10.7 A peak pulse current (IPPM) are validated with derating above 25 °C per Fig. 2, and it maintains reliable operation across -65 °C to +185 °C junction temperature range.
The device exhibits 0.087 %/°C temperature coefficient of VBR, enabling predictable voltage shift over thermal extremes. Its low incremental surge resistance and fast response time ensure effective suppression of sub-microsecond transients without compromising downstream IC integrity in automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 25.7 V / 27.0 V / 28.4 V - ensures precise triggering above 23.1 V operating voltage while accommodating manufacturing tolerance and thermal drift |
| VWM | 23.1 V - maximum continuous reverse working voltage before leakage exceeds 1.0 μA, defining safe DC bias margin |
| VC @ IPPM | 37.5 V at 10.7 A - clamping voltage limits transient energy delivered to protected circuitry during 400 W surge events |
| PPPM | 400 W (10/1000 μs) - peak pulse power handling capacity validated on standard 5.0 mm × 5.0 mm PCB copper pads |
| TJ max. | +185 °C - enables use in under-hood automotive modules and high-temperature industrial enclosures without derating |
| Polarity | Unidirectional - protects against positive-going transients only; requires correct cathode orientation relative to protected line |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 0.208" length, compatible with automated pick-and-place and reflow |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-002; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink path | Connected to ground or low-impedance return; carries full surge current during clamping event |
| Cathode | Protected line connection point | Connected to signal/power line being safeguarded; voltage referenced to anode during conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22 standards |
| Junction passivation | Optimized anisotropic rectifier structure reduces parameter drift and improves long-term stability under thermal stress |
| MSL Level 1 | Moisture sensitivity level 1 per J-STD-020 - no floor life limitation; supports standard reflow without baking |
| Low VF (3.5 V @ 25 A) | Minimizes forward conduction loss during high-current surge events, reducing localized heating at bond wires |
| 0.087 %/°C αT | Predictable VBR shift allows accurate system-level transient margining across full operating temperature range |
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 ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before reaching sensitive input stages. Use Value: Maintains 23.1 V stand-off while clamping to ≤37.5 V, preserving signal integrity and preventing latch-up in 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Fast-response transient suppressor mounted directly at terminal block entry points to divert surge energy away from isolation barriers. Use Value: 400 W pulse rating and 10.7 A IPPM handle repetitive 10/1000 μs surges common in factory automation without degradation. |
| Consumer Power Adapter Input | Telecom Line Interface Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters subjected to lightning-induced surges on DC output rails. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected across regulated 12 V or 19 V output to absorb residual transients escaping primary-side protection. Use Value: 185 °C TJ max enables placement near heat-generating transformers or MOSFETs without thermal derating penalties. |
Use Scenario: Protecting Ethernet PHY interfaces and DSL line drivers from induced surges on twisted-pair cabling in outdoor telecom cabinets. IC Role / Device Role / Timing Role: Unidirectional suppressor integrated into front-end filter network to limit differential-mode transients before common-mode chokes. Use Value: Low 1.0 μA leakage at 23.1 V VWM prevents signal attenuation on high-impedance data lines while ensuring fast <1 ns response. |
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 (25.7–28.4 V), but SMB (DO-214AA) package - 20 % larger footprint and 10 % lower thermal resistance | Preferred where board space permits and higher thermal mass improves surge endurance in infrequent-event applications | Select SMBJ27A when layout allows larger pad area and thermal performance outweighs size constraints |
| TPSMA27AHM3_B/I | Identical electrical specs and SMA package; halogen-free molding compound and JESD201 Class 2 whisker resistance | Required for RoHS+halogen-free compliance mandates in EU medical or green-certified industrial equipment | Choose TPSMA27AHM3_B/I when halogen-free material compliance is contractually required |
Compared with SMBJ27A and TPSMA27AHM3_B/I, the TPSMA27AHE3_B/I offers identical surge performance in the smallest standardized SMA footprint, with AEC-Q101 qualification and RoHS compliance - making it optimal for space-constrained automotive and industrial designs where regulatory alignment and thermal robustness are balanced.
Availability
TPSMA27AHE3_B/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom line interface safeguarding requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPSMA27AHE3_B/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 operation.
The TPSMA27AHE3_B/I belongs to Vishay's PAR® series of surface-mount TVS diodes, engineered specifically for high-reliability transient suppression in automotive, industrial, and telecom systems where AEC-Q101 qualification and 185 °C operation are mandatory.
FAQ
What is the clamping voltage of the TPSMA27AHE3_B/I under maximum rated surge conditions?
The TPSMA27AHE3_B/I has a maximum clamping voltage (VC) of 37.5 V when subjected to its rated 10.7 A peak pulse current (IPPM) using the standard 10/1000 μs waveform. This value is measured with the device mounted on 5.0 mm × 5.0 mm copper pads per JEDEC guidelines and defines the upper voltage limit imposed on protected circuitry during transient events. The TPSMA27AHE3_B/I maintains this clamping performance across its full -65 °C to +185 °C operating junction temperature range.
Is the TPSMA27AHE3_B/I AEC-Q101 qualified and what does that mean for automotive use?
Yes, the TPSMA27AHE3_B/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in datasheet 88405. This qualification validates the device for automotive applications through rigorous stress testing including temperature cycling, highly accelerated life testing (HALT), and electrostatic discharge (ESD) per JESD22 standards. The TPSMA27AHE3_B/I is therefore approved for use in engine control units, ADAS sensors, and body electronics where reliability under extreme thermal and mechanical stress is critical.
What is the difference between TPSMA27AHE3_B/I and TPSMA27AHM3_B/I?
The TPSMA27AHE3_B/I and TPSMA27AHM3_B/I share identical electrical specifications, SMA (DO-214AC) package, and AEC-Q101 qualification. The distinction lies in material composition: TPSMA27AHE3_B/I is RoHS-compliant with standard molding compound, while TPSMA27AHM3_B/I adds halogen-free construction and meets JESD201 Class 2 whisker resistance requirements. For designs requiring halogen-free compliance - such as those targeting EU medical or green-certified industrial standards - TPSMA27AHM3_B/I is the appropriate choice, whereas TPSMA27AHE3_B/I satisfies general automotive and industrial RoHS needs.
What is the maximum reverse leakage current of the TPSMA27AHE3_B/I at its stand-off voltage?
The TPSMA27AHE3_B/I exhibits a maximum reverse leakage current (IR) of 1.0 μA at its 23.1 V stand-off voltage (VWM) when tested at 25 °C. At elevated temperatures - specifically at 150 °C - leakage remains tightly controlled at ≤1000 μA, ensuring minimal power loss and signal distortion in high-temperature deployments. This low leakage supports reliable operation in high-impedance sensor interfaces and battery-powered systems where quiescent current must be minimized.
Does the TPSMA27AHE3_B/I require special PCB layout considerations for optimal surge performance?
Yes - optimal surge performance of the TPSMA27AHE3_B/I requires adherence to Vishay's recommended mounting pad layout: 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads attached to each terminal, as specified in Figure 2 of datasheet 88405. Deviating from this layout reduces thermal dissipation and degrades the 400 W peak pulse power rating. Additionally, minimizing trace inductance between the TPSMA27AHE3_B/I and protected node - especially cathode-to-signal and anode-to-ground paths - is essential to preserve its sub-nanosecond response time and prevent voltage overshoot during fast transients.
TPSMA27AHE3_B/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:
- Active
- 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_B/I FAQ
1.How can I place an order for TPSMA27AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA27AHE3_B/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_B/I reliable?
The price and inventory of TPSMA27AHE3_B/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_B/I is usually 5 days.
3.What payment methods are accepted for TPSMA27AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA27AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA27AHE3_B/I?
TPSMA27AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA27AHE3_B/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_B/I?
For technical support, including TPSMA27AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA27AHE3_B/I requirements.
6.How does Aetrix verify that TPSMA27AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All TPSMA27AHE3_B/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_B/I meets industry standards.
7.What is the process for return or replacement of TPSMA27AHE3_B/I?
All TPSMA27AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA27AHE3_B/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_B/I part is unused and in its original packaging.
Return procedure for TPSMA27AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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