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Vishay General Semiconductor - Diodes Division TPSMC27AHE3_B/I
- Part No.:
- TPSMC27AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC27AHE3_B/I.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,708
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Product details
Overview
TPSMC27AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on power and signal lines. It features a 27 V breakdown voltage (VBR = 25.7–28.4 V at 1 mA), 23.1 V stand-off voltage (VWM), 1500 W peak pulse power (10/1000 μs), 40.0 A peak pulse current (IPPM), and clamps to 37.5 V at rated surge. It is used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.
For engineers reviewing the TPSMC27AHE3_B/I datasheet, TPSMC27AHE3_B/I pinout, TPSMC27AHE3_B/I application, or TPSMC27AHE3_B/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 185 °C junction temperature rating, low clamping ratio (VC/VBR ≈ 1.39), and compatibility with automated SMT assembly per J-STD-002 and JESD 22-B102.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, leveraging passivated anisotropic rectifier technology to deliver fast response (<1 ns) and stable clamping under repetitive transients. Its 185 °C maximum junction temperature and MSL Level 1 rating support high-reliability automotive under-hood and industrial control applications.
The device exhibits low incremental surge resistance and excellent clamping capability, with a typical temperature coefficient of VBR at +0.087 %/°C - enabling predictable voltage shift across operating temperature ranges. It meets ANSI/IEEE C62.35 surge waveform standards and is qualified to AEC-Q101 for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 25.7 / 27.0 / 28.4 V at 1 mA - defines precise voltage threshold where avalanche conduction begins, critical for accurate overvoltage trip point alignment |
| VWM | 23.1 V - maximum continuous reverse working voltage before leakage exceeds 1 μA; sets safe operating margin below breakdown |
| VC @ IPPM | 37.5 V at 40.0 A - clamping voltage during 1500 W surge; determines protected circuit's maximum transient exposure level |
| PPPM | 1500 W (10/1000 μs) - peak surge energy handling capacity; enables robust protection against lightning-induced and inductive-switching transients |
| TJ max. | +185 °C - extended thermal capability supports operation in high-ambient environments like engine control units and motor drives |
| Polarity | Unidirectional - provides reverse-biased clamping only; requires correct orientation relative to DC bias in power rail protection |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.0 mm × 8.0 mm copper pad requirement for thermal derating compliance |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, cathode indicated by color band. Meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction or clamping | Connected to lower-potential side of protected line (e.g., ground or return path); defines directionality for unidirectional operation |
| Cathode | Current exit terminal during clamping; marked by color band | Connected to higher-potential side (e.g., VIN, signal line); determines polarity-sensitive placement in PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock - required for ECU, ADAS, and body electronics |
| 185 °C junction temperature rating | Enables uninterrupted operation in under-hood environments without thermal shutdown or parameter drift beyond spec limits |
| 1500 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-earth) when properly mounted on 8 mm × 8 mm copper pads |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage stress on downstream components during transient events, improving system-level robustness |
| MSL Level 1, 260 °C reflow compatible | Allows single-pass lead-free reflow soldering without moisture-related popcorn failure or delamination |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs from load-dump and jump-start transients up to ±60 V. IC Role / Device Role / Timing Role: Shunt-type transient voltage suppressor placed between power rail and ground, clamping surges within microseconds. Use Value: Prevents latch-up or permanent damage to microcontrollers and CAN transceivers by limiting rail voltage to ≤37.5 V during 40 A surge events. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in PLC I/O modules exposed to field wiring noise. IC Role / Device Role / Timing Role: Unidirectional TVS placed across sensor output and reference ground to clamp ESD and inductive kickback. Use Value: Maintains signal integrity below 37.5 V clamping level while adding <1 pF junction capacitance - no bandwidth degradation in 0–10 kHz sensor signals. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeds |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters subjected to mains surge coupling. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V or 19 V output rails, activated only during fault conditions. Use Value: Provides fail-safe shutdown margin with 23.1 V working voltage and 37.5 V clamping - avoids nuisance tripping during normal ripple. | Use Scenario: Protecting -48 V telecom power distribution boards from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Reverse-connected unidirectional TVS on negative rail to clamp positive-going transients toward ground. Use Value: Delivers 1500 W surge handling with verified performance at -40 °C to +125 °C ambient - meets GR-1089-CORE requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27AHE3/A | Same VBR range (25.7–28.4 V), but SMB package (DO-214AA); 600 W PPPM, lower IPPM (21.5 A) | Lower surge capacity suits space-constrained consumer electronics, not automotive or industrial high-energy environments | Select when board area is limited and surge threat level is ≤600 W; not suitable for AEC-Q101 systems |
| TPSMC27AHM3_B/I | Identical electrical specs and SMC package; halogen-free molding compound, same RoHS/AEC-Q101 compliance | No functional difference; differs only in material composition (halogen-free vs. standard RoHS) | Choose for halogen-free BOM compliance without sacrificing performance or qualification status |
Compared with TPSMC27AHE3_B/I, SMBJ27AHE3/A offers reduced surge robustness in a smaller footprint, while TPSMC27AHM3_B/I delivers identical protection with halogen-free construction - both require validation of mounting pad layout and thermal derating curves for target application conditions.
Availability
TPSMC27AHE3_B/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power distribution systems requiring stable component supply and AEC-Q101-compliant surge protection.
Supply support for TPSMC27AHE3_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, thermal performance, and automotive qualification.
The TPSMC series is part of Vishay's PAR® (Protected Avalanche Rectifier) platform, engineered specifically for high-energy transient suppression in harsh-environment applications including automotive power systems and industrial automation.
FAQ
What is the clamping voltage of the TPSMC27AHE3_B/I under full-rated surge current?
The TPSMC27AHE3_B/I clamps to a maximum of 37.5 V when subjected to its rated peak pulse current of 40.0 A (10/1000 μs waveform). This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 19-Jan-2024. The clamping behavior ensures downstream components see no more than 37.5 V during surge events, making TPSMC27AHE3_B/I suitable for protecting 24 V and 3.3 V logic interfaces with appropriate design margin.
Is the TPSMC27AHE3_B/I qualified for automotive applications?
Yes, the TPSMC27AHE3_B/I is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet (Document Number: 88407, Revision: 19-Jan-2024). The HE3 suffix denotes RoHS-compliant and AEC-Q101-qualified construction. This qualification covers stress tests including temperature cycling, high-temperature operating life, and mechanical shock - confirming suitability for engine control units, body electronics, and ADAS subsystems where TPSMC27AHE3_B/I is deployed.
What does the "B/I" suffix mean in TPSMC27AHE3_B/I?
The "B/I" suffix in TPSMC27AHE3_B/I indicates packaging configuration: "B" denotes the revision code (Revision B), and "I" specifies the tape-and-reel delivery mode using a 13-inch diameter reel with 3500 units per reel. This matches Vishay's ordering information table, where "I" corresponds to the larger reel format optimized for high-volume SMT production lines handling TPSMC27AHE3_B/I.
Can the TPSMC27AHE3_B/I be used in bidirectional protection circuits?
No, the TPSMC27AHE3_B/I is unidirectional only, as confirmed in the Vishay datasheet under FEATURES ("Available in unidirectional polarity only"). It conducts and clamps only in reverse bias - forward conduction occurs above ~3.5 V (VF = 3.5 V at 100 A), but it is not rated or characterized for bidirectional surge suppression. For bidirectional protection, a dedicated bidirectional TVS such as SMAJ27CA must be selected instead of TPSMC27AHE3_B/I.
What is the maximum operating temperature for the TPSMC27AHE3_B/I?
The TPSMC27AHE3_B/I has a maximum junction temperature (TJ) of +185 °C and an operating junction/storage temperature range of -65 °C to +185 °C. This rating is validated per the datasheet's MAXIMUM RATINGS table and supports sustained operation in under-hood automotive environments and industrial motor drive cabinets where ambient temperatures exceed 125 °C - provided PCB thermal design meets the 8.0 mm × 8.0 mm copper pad requirement per terminal.
TPSMC27AHE3_B/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- 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):
- 40A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMC)
TPSMC27AHE3_B/I FAQ
1.How can I place an order for TPSMC27AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC27AHE3_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 TPSMC27AHE3_B/I reliable?
The price and inventory of TPSMC27AHE3_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 TPSMC27AHE3_B/I is usually 5 days.
3.What payment methods are accepted for TPSMC27AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC27AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC27AHE3_B/I?
TPSMC27AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC27AHE3_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 TPSMC27AHE3_B/I?
For technical support, including TPSMC27AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC27AHE3_B/I requirements.
6.How does Aetrix verify that TPSMC27AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All TPSMC27AHE3_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 TPSMC27AHE3_B/I meets industry standards.
7.What is the process for return or replacement of TPSMC27AHE3_B/I?
All TPSMC27AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC27AHE3_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 TPSMC27AHE3_B/I part is unused and in its original packaging.
Return procedure for TPSMC27AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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