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Vishay General Semiconductor - Diodes Division TPSMB27AHE3/52T
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- Part No.:
- TPSMB27AHE3/52T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB27AHE3/52T.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,078
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Product details
Overview
TPSMB27AHE3/52T from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching and lightning-induced transients on power rails and signal lines. It features a 27.0 V nominal breakdown voltage (VBR), 23.1 V maximum stand-off voltage (VWM), 37.5 V clamping voltage at 16 A peak pulse current, 600 W peak pulse power (10/1000 µs), and operates up to +185 °C junction temperature - deployed in automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the TPSMB27AHE3/52T datasheet, TPSMB27AHE3/52T pinout, TPSMB27AHE3/52T application, or TPSMB27AHE3/52T equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, TJ = 185 °C thermal rating, and verified clamping performance under repetitive 10/1000 µs surge conditions.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its junction passivation enables reliable operation at TJ = 185 °C and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
The device delivers precise clamping with 0.087 %/°C temperature coefficient of VBR, 1 μA max reverse leakage at VWM, and 3.5 V max forward voltage at 50 A - enabling robust overvoltage protection in automotive ECUs and industrial PLC I/O modules without compromising signal integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 25.7 / 27.0 / 28.4 V - ensures consistent avalanche initiation across temperature and unit variation |
| VWM | 23.1 V - defines maximum continuous operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 37.5 V at 16 A - limits downstream voltage stress during 10/1000 µs transients |
| PPPM | 600 W - supports single-pulse energy absorption without degradation under defined waveform |
| TJ max. | +185 °C - enables placement near high-power components in engine control or motor drive PCBs |
| Package | SMB (DO-214AA) - industry-standard SMD outline with 0.205" × 0.220" footprint and cathode band marking |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
TPSMB27AHE3/52T is housed in an SMB (DO-214AA) surface-mount package with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. The cathode is marked by a color band on the body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side (e.g., ground or return path) in unidirectional clamp configuration |
| Cathode | Current exit point during forward conduction; avalanche terminal during reverse surge | Connected to protected line (e.g., 24 V rail or CAN-H); clamps to ~37.5 V when transients exceed VWM |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Enables stable 185 °C operation and long-term reliability under thermal cycling in automotive under-hood environments |
| 600 W peak pulse power (10/1000 µs) | Withstands ISO 7637-2 Pulse 1/2a/5a surges without failure when mounted on 5 mm × 5 mm copper pads |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage margin required for protected ICs such as microcontrollers or CAN transceivers |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control units and body electronics per stress test requirements |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free assembly without pre-baking or special handling |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply inputs in engine control modules against load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and DC-DC input, absorbing transients before they reach regulator ICs. Use Value: Clamps 120 V/100 ms load dump events to ≤37.5 V, preventing damage to downstream PMICs and MCU power domains. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation systems exposed to ESD and relay switching noise. IC Role / Device Role / Timing Role: Low-capacitance TVS connected between signal line and ground, suppressing fast transients while preserving signal bandwidth. Use Value: Limits voltage excursions to <37.5 V during 8 kV contact ESD events, maintaining ADC accuracy and avoiding latch-up in signal conditioning amplifiers. |
| Telecom Line Surge Suppression | Consumer Power Adapter Input Protection |
|
Use Scenario: Front-end protection for PoE-powered equipment interfaces subjected to lightning-induced surges on Ethernet pairs. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices on each data pair, referenced to common-mode ground plane. Use Value: Withstands 10/700 µs telecom surge waveforms up to 600 W, meeting IEC 61000-4-5 Level 4 immunity requirements. |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters for smart home devices after rectification and bulk capacitance. IC Role / Device Role / Timing Role: Clamp placed across output capacitor to limit transient overshoot during no-load to full-load transitions. Use Value: Prevents >37.5 V spikes from damaging USB-PD controllers or downstream USB-C port protection ICs during dynamic load changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ27A | Same VBR range (25.7–28.4 V), but lower PPPM = 400 W; SMA package (smaller thermal mass) | Limited to lower-energy transients; not AEC-Q101 qualified | Select SMAJ27A only for cost-sensitive consumer applications where automotive qualification and 600 W capability are unnecessary. |
| SMCJ27A | Higher PPPM = 1500 W; same VBR and VC; larger SMC (DO-214AB) package | Overqualified for most 24 V systems; requires more PCB area and higher mounting pad thermal mass | Choose SMCJ27A only when system-level testing confirms need for >600 W surge handling, e.g., heavy-duty industrial motor drives. |
Compared with SMAJ27A and SMCJ27A, the TPSMB27AHE3/52T provides optimal balance of AEC-Q101 compliance, 600 W surge capacity, SMB footprint, and 185 °C operation - making it the preferred choice for space-constrained automotive and industrial designs requiring validated reliability.
Availability
TPSMB27AHE3/52T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom infrastructure equipment requiring stable component supply and AEC-Q101-compliant transient protection.
Supply support for TPSMB27AHE3/52T 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 high-reliability diodes, MOSFETs, and passive components for demanding industrial and automotive applications.
The TPSMB27AHE3/52T belongs to Vishay's PAR® family of surface-mount TVS diodes engineered specifically for high-temperature, high-surge environments - targeting under-hood automotive, industrial automation, and infrastructure power systems.
FAQ
What is the clamping voltage of the TPSMB27AHE3/52T at its rated peak pulse current?
The TPSMB27AHE3/52T has a maximum clamping voltage (VC) of 37.5 V at its rated peak pulse current (IPPM) of 16 A, measured using a 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and ensures protected circuitry remains below critical voltage thresholds during surge events. The TPSMB27AHE3/52T achieves this with low incremental surge resistance and stable junction characteristics.
Is the TPSMB27AHE3/52T qualified for automotive applications?
Yes, the TPSMB27AHE3/52T is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's official datasheet (Document Number: 88406). It undergoes rigorous stress testing including high-temperature reverse bias, temperature cycling, and humidity bias life, making it suitable for engine control units, body electronics, and ADAS power supplies. The TPSMB27AHE3/52T also supports MSL Level 1 handling and 260 °C reflow.
What does the "HE3" suffix indicate in TPSMB27AHE3/52T?
The "HE3" suffix in TPSMB27AHE3/52T denotes RoHS-compliant construction with matte tin-plated leads, AEC-Q101 qualification, and compliance with JESD 201 Class 2 whisker resistance. The "52T" denotes tape-and-reel packaging in 13-inch reels with 3200 units per reel. This full ordering code identifies a production-ready, automotive-grade variant of the TPSMB27AHE3/52T with traceable manufacturing and reliability validation.
Can the TPSMB27AHE3/52T be used in bidirectional configurations?
No, the TPSMB27AHE3/52T is unidirectional only, as explicitly stated in the Vishay datasheet. It conducts in forward bias and clamps in reverse avalanche mode. For bidirectional protection, two TPSMB27AHE3/52T devices must be connected in series opposition, or a dedicated bidirectional TVS (e.g., TPSMB27CA) should be selected. Using a single TPSMB27AHE3/52T in reverse-biased signal paths risks permanent failure.
What is the maximum reverse leakage current of the TPSMB27AHE3/52T at room temperature?
The TPSMB27AHE3/52T exhibits a maximum reverse leakage current (IR) of 1 μA at its stand-off voltage (VWM = 23.1 V) and ambient temperature (TA = 25 °C), per the electrical characteristics table in the Vishay datasheet. At elevated temperatures (e.g., TJ = 150 °C), leakage increases to ≤5 μA - a design-stable value that avoids excessive quiescent power loss in always-on automotive modules using the TPSMB27AHE3/52T.
TPSMB27AHE3/52T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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):
- 16A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMBJ)
TPSMB27AHE3/52T FAQ
1.How can I place an order for TPSMB27AHE3/52T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB27AHE3/52T 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 TPSMB27AHE3/52T reliable?
The price and inventory of TPSMB27AHE3/52T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB27AHE3/52T is usually 5 days.
3.What payment methods are accepted for TPSMB27AHE3/52T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB27AHE3/52T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB27AHE3/52T?
TPSMB27AHE3/52T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB27AHE3/52T 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 TPSMB27AHE3/52T?
For technical support, including TPSMB27AHE3/52T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB27AHE3/52T requirements.
6.How does Aetrix verify that TPSMB27AHE3/52T is sourced from the original manufacturer or authorized distributors?
All TPSMB27AHE3/52T 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 TPSMB27AHE3/52T meets industry standards.
7.What is the process for return or replacement of TPSMB27AHE3/52T?
All TPSMB27AHE3/52T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB27AHE3/52T, 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 TPSMB27AHE3/52T part is unused and in its original packaging.
Return procedure for TPSMB27AHE3/52T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB27AHE3/52T Tags
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