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Vishay General Semiconductor - Diodes Division TPSMB27AHM3_A/I
- Part No.:
- TPSMB27AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB27AHM3_A/I.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,779
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Product details
Overview
TPSMB27AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features 27 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 - ideal for automotive power rail protection.
For engineers reviewing the TPSMB27AHM3_A/I datasheet, TPSMB27AHM3_A/I pinout, TPSMB27AHM3_A/I application, or TPSMB27AHM3_A/I equivalent, this page delivers verified electrical specs, thermal derating behavior, AEC-Q101 qualification status, SMB package mechanical data, and real-world clamping performance under surge conditions.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve low incremental surge resistance and excellent clamping capability with sub-nanosecond response time. Its unidirectional polarity and 23.1 V stand-off voltage enable reliable operation across 12 V and 24 V automotive supply rails without leakage-induced bias drift.
The device is rated for 75 A non-repetitive forward surge current (8.3 ms half-sine), supports MSL Level 1 reflow (260 °C peak), and maintains stable VBR over -65 °C to +185 °C via a +0.087 %/°C temperature coefficient - critical for under-hood electronics exposed to thermal cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 25.7 V / 27.0 V / 28.4 V - ensures robust turn-on margin above 24 V system rails while avoiding false triggering |
| VWM | 23.1 V - maximum continuous reverse voltage before leakage exceeds 1 µA, compatible with 24 V nominal systems |
| VC @ IPPM | 37.5 V - clamps 16 A transient to safe level below typical 40 V MOSFET drain-source rating |
| PPPM | 600 W - handles ISO 7637-2 Pulse 1/2a/5a surges without degradation when mounted on 5 mm × 5 mm copper pads |
| TJ max. | +185 °C - enables placement near high-temperature components (e.g., power converters, engine control units) |
| Package | SMB (DO-214AA) - industry-standard footprint with 0.220" body length, compatible with automated SMT assembly |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard |
Pinout & Package
SMB (DO-214AA) surface-mount package with molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground during overvoltage events |
| Anode | Reference/ground return path | Typically tied to system ground plane; completes clamping loop with minimal inductance |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Withstands repeated load-dump transients in 12 V/24 V automotive networks without parametric shift |
| +185 °C junction temperature rating | Enables direct mounting on high-thermal-load PCB areas (e.g., near DC/DC converters or motor drivers) |
| Low clamping ratio (VC/VBR = 1.39) | Minimizes overvoltage stress on downstream ICs and MOSFETs during fast-rising transients |
| AEC-Q101 qualified (HM3 suffix) | Guarantees long-term reliability in automotive applications including engine control, ADAS, and body electronics |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and single-reflow processing at 260 °C peak without popcorn cracking |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Suppressing ISO 7637-2 Pulse 5a (load dump) on 24 V battery-fed ECUs in commercial vehicles. IC Role / Device Role / Timing Role: Primary clamping element placed between battery input and DC/DC converter input stage. Use Value: Limits transient voltage to ≤37.5 V, protecting 40 V-rated input MOSFETs and LDOs without derating design margins. | Use Scenario: Protecting analog output lines of pressure sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Unidirectional TVS on 4–20 mA current-loop outputs exposed to relay switching noise. Use Value: Clamps 1 kV/µs transients within 1 ns while maintaining <1 µA leakage at 23.1 V, preserving signal accuracy. |
| Consumer Power Adapter Input Stage | Telecom DC Feeder Surge Suppression |
Use Scenario: Secondary-side overvoltage protection in universal-input AC/DC adapters powering USB-C PD devices. IC Role / Device Role / Timing Role: Standoff-clamp TVS on +5 V/9 V/15 V/20 V output rails downstream of synchronous rectifiers. Use Value: Prevents latch-up in USB PD controllers during hot-plug induced ringing, leveraging 37.5 V clamping at 16 A. | Use Scenario: DC power feed line protection in remote radio head (RRH) units powered via 48 V PoE-like infrastructure. IC Role / Device Role / Timing Role: First-line transient suppressor on -48 V telecom supply before DC/DC isolation stage. Use Value: Absorbs 600 W surges from lightning-induced coupling while maintaining <1 µA leakage at -23.1 V reverse bias. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27A | Same VBR (25.7–28.4 V), identical SMB package, but rated for 600 W with 10/1000 µs waveform and not AEC-Q101 qualified | Targeted at industrial/commercial designs where automotive qualification is not required | Select SMBJ27A for cost-sensitive non-automotive applications with equivalent clamping performance |
| TPSMB27AHM3_A/H | Identical electrical and thermal specs; differs only in packaging - 7" tape reel (750 pcs) vs. 13" tape reel (3200 pcs) | No functional difference; choice depends solely on production volume and SMT line feeder compatibility | Choose TPSMB27AHM3_A/H for low-volume prototyping or small-batch manufacturing runs |
Compared with SMBJ27A and TPSMB27AHM3_A/H, the TPSMB27AHM3_A/I offers guaranteed AEC-Q101 compliance and high-volume 13" tape delivery - making it the preferred choice for Tier 1 automotive production where traceability, reliability validation, and procurement scale are mandatory.
Availability
TPSMB27AHM3_A/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface circuits, consumer power adapter output stages, and telecom DC feeder lines requiring stable component supply across extended temperature ranges and high-reliability environments.
Supply support for TPSMB27AHM3_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 high-reliability, high-temperature, and automotive-grade solutions.
The TPSMB series belongs to Vishay's PAR® (Protected Anisotropic Rectifier) transient voltage suppressor family, engineered specifically for robust surge immunity in harsh automotive and industrial environments where sustained operation at +185 °C and AEC-Q101 validation are essential.
FAQ
What is the clamping voltage of the TPSMB27AHM3_A/I at its rated peak pulse current?
The TPSMB27AHM3_A/I has a maximum clamping voltage (VC) of 37.5 V at 16 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and reflects actual worst-case voltage seen by downstream circuitry during surge events. The clamping performance is guaranteed across the full operating temperature range and forms the basis for safe margining of protected components like MOSFETs and regulators in the TPSMB27AHM3_A/I application circuit.
Is the TPSMB27AHM3_A/I AEC-Q101 qualified?
Yes, the TPSMB27AHM3_A/I is fully AEC-Q101 qualified. The "HM3" suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 validation, covering stress tests including high-temperature reverse bias (HTRB), temperature cycling, and electrostatic discharge. This qualification is documented in Vishay's official certification reports and applies specifically to the TPSMB27AHM3_A/I part number - confirming suitability for automotive powertrain, chassis, and body electronics where reliability under thermal and electrical stress is mission-critical.
What is the standoff voltage (VWM) of the TPSMB27AHM3_A/I, and why does it matter?
The TPSMB27AHM3_A/I has a maximum working peak reverse voltage (VWM) of 23.1 V at 25 °C, rising slightly with temperature. This parameter defines the highest continuous reverse voltage the device can block without exceeding 1 µA leakage current. It matters because VWM must exceed the normal operating voltage of the protected line - for example, 23.1 V allows safe use on nominal 24 V automotive systems while avoiding false conduction during normal operation. Exceeding VWM risks premature breakdown and system malfunction, so proper selection of the TPSMB27AHM3_A/I requires matching VWM to the rail's steady-state voltage.
Can the TPSMB27AHM3_A/I be used in bidirectional configurations?
No, the TPSMB27AHM3_A/I is unidirectional only, as explicitly stated in the Vishay datasheet. It conducts surge current from cathode to anode and blocks reverse voltage up to VWM; it does not provide symmetrical clamping for AC or bipolar transients. For bidirectional protection, two TPSMB27AHM3_A/I devices must be connected in series opposition, or a dedicated bidirectional TVS (e.g., TPSMB27CA) should be selected. Using the TPSMB27AHM3_A/I in a bidirectional role without proper configuration will result in failure to clamp negative-going transients.
What is the thermal derating behavior of the TPSMB27AHM3_A/I above 25 °C ambient?
The TPSMB27AHM3_A/I follows Vishay's standard derating curve (Fig. 2 in Document 88406): peak pulse power drops linearly from 600 W at 25 °C to zero at +185 °C junction temperature. At 100 °C ambient (assuming typical board thermal resistance), usable pulse power is approximately 420 W. Derating is based on junction temperature, not ambient alone - accurate estimation requires thermal modeling of PCB copper area (minimum 5 mm × 5 mm per pad) and airflow. This behavior ensures predictable surge handling in under-hood automotive locations where the TPSMB27AHM3_A/I may operate continuously near 125 °C ambient.
TPSMB27AHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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):
- 16A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
TPSMB27AHM3_A/I FAQ
1.How can I place an order for TPSMB27AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB27AHM3_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 TPSMB27AHM3_A/I reliable?
The price and inventory of TPSMB27AHM3_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 TPSMB27AHM3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMB27AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB27AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB27AHM3_A/I?
TPSMB27AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB27AHM3_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 TPSMB27AHM3_A/I?
For technical support, including TPSMB27AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB27AHM3_A/I requirements.
6.How does Aetrix verify that TPSMB27AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMB27AHM3_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 TPSMB27AHM3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMB27AHM3_A/I?
All TPSMB27AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB27AHM3_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 TPSMB27AHM3_A/I part is unused and in its original packaging.
Return procedure for TPSMB27AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB27AHM3_A/I Tags
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Diodes Incorporated
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Diodes Incorporated
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