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Vishay General Semiconductor - Diodes Division TPSMC27AHE3_B/H
- Part No.:
- TPSMC27AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC27AHE3_B/H.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,700
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Product details
Overview
TPSMC27AHE3_B/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on power and signal lines. It features 27 V nominal breakdown voltage (VBR), 23.1 V stand-off voltage (VWM), 37.5 V maximum clamping voltage at 40 A peak pulse current, 1500 W peak pulse power (10/1000 μs), and operates up to +185 °C junction temperature. It is used to protect MOSFETs and ICs in automotive power modules against inductive switching surges.
For engineers reviewing the TPSMC27AHE3_B/H datasheet, TPSMC27AHE3_B/H pinout, TPSMC27AHE3_B/H application, or TPSMC27AHE3_B/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 185 °C TJ max rating, low clamping ratio (VC/VWM ≈ 1.62), and MSL Level 1 moisture sensitivity for lead-free reflow compatibility.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology with junction passivation optimized for high-temperature stability and reliability under repetitive surge stress. Its 1500 W peak pulse power rating is specified per 10/1000 μs waveform with derating above 25 °C ambient, and it delivers 37.5 V clamping voltage at 40.0 A IPPM - enabling robust protection of 24 V automotive systems during load dump or ISO 7637-2 pulse 1/2a events.
The device exhibits 0.087 %/°C temperature coefficient of VBR, ensuring predictable voltage drift across its -65 °C to +185 °C operating range. With 1.0 μA maximum reverse leakage at VWM and 10 μA at 150 °C, it maintains low standby power loss while offering fast response time and low incremental surge resistance for effective transient suppression.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 25.7 / 27.0 / 28.4 V - ensures reliable triggering above 24 V system rail while accommodating manufacturing tolerance and temperature drift |
| VWM | 23.1 V - maximum continuous reverse working voltage before leakage exceeds 1.0 μA at 25 °C |
| VC @ IPPM | 37.5 V - clamping voltage at 40.0 A peak pulse current; limits downstream voltage stress to safe levels during transients |
| PPPM | 1500 W - peak pulse power handling capability with 10/1000 μs waveform, suitable for ISO 7637-2 and IEC 61000-4-5 compliance testing |
| TJ max | +185 °C - enables use in under-hood automotive environments and high-power industrial PCBs without thermal derating penalties |
| Polarity | Unidirectional - protects only against positive transients relative to cathode; requires correct orientation in series with protected line |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.0 mm × 8.0 mm copper pad requirement for thermal dissipation |
Pinout & Package
TPSMC27AHE3_B/H uses the SMC (DO-214AB) package: molded epoxy case with matte tin-plated leads, cathode indicated by a color band, compliant with UL 94 V-0, and qualified to MSL Level 1 (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane; completes clamping path during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per JESD22-A108 |
| 185 °C junction rating | Enables operation in engine control units, battery management systems, and other high-ambient-temperature locations without derating |
| 1500 W peak pulse power | Supports protection against severe transients such as load dump (ISO 16750-2) and coupled lightning surges (IEC 61000-4-5) |
| Low clamping ratio (VC/VWM = 1.62) | Minimizes overvoltage exposure to downstream components while maintaining margin above normal operating voltage |
| MSL Level 1 rating | Allows standard Pb-free reflow profiles (up to 260 °C peak) without baking or special handling prior to assembly |
Applications
| Automotive Power Distribution | Industrial Motor Drive Protection |
|---|---|
Use Scenario: Protecting 24 V supply rails in body control modules against load dump transients up to 35 V for 400 ms. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery input and DC-DC converter input stage. Use Value: Clamps peak voltage to ≤37.5 V during ISO 16750-2 Pulse 5a, preventing damage to upstream regulators and microcontrollers. |
Use Scenario: Safeguarding gate drivers and IGBTs in variable-frequency drives from inductive kickback during MOSFET turn-off. IC Role / Device Role / Timing Role: Transient suppressor mounted across DC bus or gate-source terminals to absorb stored energy. Use Value: Limits voltage overshoot to <40 V during 100 ns–1 μs switching events, reducing risk of gate oxide rupture and shoot-through failure. |
| Telecom Power Interface | Consumer Sensor Signal Line Protection |
Use Scenario: Shielding PoE-powered Ethernet switch ports from ESD and cable-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V DC input before DC-DC isolation stage. Use Value: Absorbs 1500 W surge energy within 1000 μs, maintaining output regulation and avoiding latch-up in PMICs. |
Use Scenario: Guarding analog outputs of automotive cabin temperature sensors against ESD events during connector mating. IC Role / Device Role / Timing Role: Low-capacitance TVS on 3.3 V sensor output line, positioned adjacent to connector. Use Value: Provides sub-1 ns response and <1.0 μA leakage at 3.3 V, preserving signal integrity and ADC accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ27AHE3/A | Same VBR (25.7–28.4 V), but lower PPPM = 400 W and smaller SMA package (DO-214AC); TJ max = 150 °C | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); unsuitable for ISO 7637-2 load dump | Select when space-constrained layout and reduced surge severity allow trade-off in power handling and temperature rating |
| TPSMC27AHM3_B/H | Identical electrical specs and package; halogen-free molding compound and whisker-tested terminations per JESD201 Class 2 | Required for RoHS-compliant, halogen-free BOMs in EU automotive programs; same footprint and thermal performance | Choose for strict environmental compliance mandates where halogen content or whisker risk must be eliminated |
Compared with SMAJ27AHE3/A, TPSMC27AHE3_B/H delivers 3.75× higher surge power and +35 °C higher junction rating for demanding automotive environments; versus TPSMC27AHM3_B/H, it shares identical protection performance but differs in material composition and qualification scope.
Availability
TPSMC27AHE3_B/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive protection, and telecom power interface applications requiring stable component supply, AEC-Q101 validation, and high-temperature operational continuity.
Supply support for TPSMC27AHE3_B/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 operation, and automotive qualification.
The TPSMC27AHE3_B/H belongs to Vishay's PAR® family of high-power surface-mount TVS diodes, engineered specifically for robust transient suppression in harsh-environment applications including engine control, battery systems, and industrial automation.
FAQ
What is the maximum clamping voltage of the TPSMC27AHE3_B/H at its rated peak pulse current?
The TPSMC27AHE3_B/H has a maximum clamping voltage (VC) of 37.5 V at its rated peak pulse current (IPPM) of 40.0 A, measured using the standardized 10/1000 μs double-exponential waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during surge events. The clamping performance is integral to the TPSMC27AHE3_B/H design for safeguarding 24 V automotive electronics.
Is the TPSMC27AHE3_B/H qualified to AEC-Q101, and what does that qualification cover?
Yes, the TPSMC27AHE3_B/H is AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code suffix "HE3". This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, highly accelerated life testing (HALT), and surge endurance - all performed per JESD22 standards. The AEC-Q101 status applies directly to the TPSMC27AHE3_B/H variant and supports its use in automotive powertrain and chassis systems.
What is the meaning of the "_B/H" suffix in TPSMC27AHE3_B/H?
The "_B/H" suffix in TPSMC27AHE3_B/H indicates packaging configuration: "B" denotes the revision level of the device specification, and "H" specifies the preferred package code for 7-inch diameter plastic tape and reel, containing 850 units per reel. This format aligns with Vishay's standardized ordering nomenclature and ensures correct logistics and assembly-line feeding for the TPSMC27AHE3_B/H.
Can the TPSMC27AHE3_B/H be used in bidirectional transient protection circuits?
No, the TPSMC27AHE3_B/H is unidirectional only, as explicitly stated in the Vishay datasheet. It conducts surge current from cathode to anode and cannot suppress negative-going transients relative to ground. For bidirectional protection, a separate device such as the TPSMC27CAHE3_B/H (center-tapped or complementary pair) would be required. Using TPSMC27AHE3_B/H in a bidirectional configuration risks failure during reverse-polarity surges.
What is the thermal pad layout recommendation for optimal power dissipation of the TPSMC27AHE3_B/H?
Vishay specifies mounting the TPSMC27AHE3_B/H on 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads at each terminal to achieve rated 1500 W pulse power. The recommended pad layout matches the SMC (DO-214AB) outline: minimum 3.20 mm length, 1.52 mm width per pad, with 4.69 mm maximum center-to-center spacing. Proper thermal pad design is essential to maintain the TPSMC27AHE3_B/H junction temperature within its -65 °C to +185 °C rating during repeated surge events.
TPSMC27AHE3_B/H 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/H FAQ
1.How can I place an order for TPSMC27AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC27AHE3_B/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 TPSMC27AHE3_B/H reliable?
The price and inventory of TPSMC27AHE3_B/H 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/H is usually 5 days.
3.What payment methods are accepted for TPSMC27AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC27AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC27AHE3_B/H?
TPSMC27AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC27AHE3_B/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 TPSMC27AHE3_B/H?
For technical support, including TPSMC27AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC27AHE3_B/H requirements.
6.How does Aetrix verify that TPSMC27AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMC27AHE3_B/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 TPSMC27AHE3_B/H meets industry standards.
7.What is the process for return or replacement of TPSMC27AHE3_B/H?
All TPSMC27AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC27AHE3_B/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 TPSMC27AHE3_B/H part is unused and in its original packaging.
Return procedure for TPSMC27AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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