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Vishay General Semiconductor - Diodes Division TPSMB27A-1BHE3_A/I
- Part No.:
- TPSMB27A-1BHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB27A-1BHE3_A/I.pdf
- Description:
- TVS DIODE 600W SMB DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPSMB27A-1BHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for clamping inductive switching surges and lightning-induced transients on power and signal lines. It features a 27 V breakdown voltage (VBR = 25.7–28.4 V at IT = 1 mA), 23.1 V stand-off voltage (VWM), 37.5 V maximum clamping voltage (VC) at 16 A peak pulse current, 600 W peak pulse power (10/1000 µs), and operates up to +185 °C junction temperature. It is used to protect MOSFETs, ICs, and sensor signal lines in automotive engine control units.
For engineers reviewing the TPSMB27A-1BHE3_A/I datasheet, TPSMB27A-1BHE3_A/I pinout, TPSMB27A-1BHE3_A/I application, or TPSMB27A-1BHE3_A/I equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, clamping performance under 10/1000 µs surge, and thermal derating above 25 °C ambient.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology with junction passivation optimized for high-reliability operation. Its 185 °C maximum junction temperature rating supports under-hood automotive environments and industrial systems requiring extended thermal stability.
The device delivers 37.5 V clamping voltage at 16 A IPPM with low incremental surge resistance and sub-nanosecond response time. It meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101 when ordered with HE3 or HM3 suffixes - confirmed by the "HE3" and "A/I" ordering code in TPSMB27A-1BHE3_A/I.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 25.7 V / 27.0 V / 28.4 V at 1 mA - defines precise voltage threshold where avalanche conduction begins; critical for matching system overvoltage tolerance. |
| 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 16 A (10/1000 µs) - clamped voltage seen by protected circuit during worst-case surge; determines stress on downstream components. |
| PPPM | 600 W - peak pulse power handling capability under standardized 10/1000 µs waveform; enables robust protection against common ESD and load-dump events. |
| TJ max. | +185 °C - maximum junction temperature rating; allows operation in high-ambient environments such as automotive powertrain modules. |
| Polarity & Package | Unidirectional, SMB (DO-214AA) - defines physical mounting footprint and directional surge conduction path; color band denotes cathode. |
Pinout & Package
SMB (DO-214AA) surface-mount package with matte tin-plated leads, UL 94 V-0 molding compound, and cathode indicated by molded band. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H). Mounting requires 5.0 mm × 5.0 mm copper pads per terminal per datasheet fig. 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal avalanche diode structure | Connected to protected line; conducts surge current toward ground when reverse voltage exceeds VBR. |
| Anode | Cathode of internal avalanche diode structure | Typically tied to system ground or low-impedance return path; completes clamping loop during transient event. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock - required for engine control, ADAS, and body electronics. |
| 185 °C junction rating | Enables placement near heat sources (e.g., power inverters, ignition coils) without thermal derating penalties in high-temperature zones. |
| 600 W peak pulse power | Withstands repetitive 10/1000 µs surges at 0.01% duty cycle - sufficient for ISO 7637-2 Pulse 1, 2a, and 5a compliance testing. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage overshoot during clamping - preserves margin for 24 V automotive systems with 36 V max transients. |
| MSL Level 1 (260 °C reflow) | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements prior to reflow. |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Protection |
|---|---|
Use Scenario: Protecting 24 V supply rails in junction boxes and fuse panels from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and local regulator input to clamp surges before they reach LDOs or microcontrollers. Use Value: Withstands 600 W pulses and maintains VC ≤ 37.5 V, preventing damage to downstream 40 V-rated regulators and ensuring system reset immunity. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops) of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: TVS placed across sensor output terminals to shunt induced EFT bursts and cable discharge events. Use Value: Sub-nanosecond response and low VC preserve signal integrity and prevent false triggering of ADC inputs or isolation amplifiers. |
| Consumer Power Adapter Input Stage | Telecom DC Power Interface |
Use Scenario: Secondary-side transient suppression on 12 V/19 V outputs of AC-DC adapters for laptops and monitors. IC Role / Device Role / Timing Role: Unidirectional clamping device connected between output rail and ground to absorb coupling noise from primary-side switching. Use Value: 23.1 V VWM ensures no conduction during normal operation; 37.5 V VC protects downstream USB-PD controllers and display interface ICs. |
Use Scenario: Surge protection on -48 V DC telecom power feeds entering base station equipment cabinets. IC Role / Device Role / Timing Role: TVS mounted at cabinet entry point to divert lightning-induced common-mode surges on power pair. Use Value: High IFSM (75 A) and 185 °C rating ensure survivability in outdoor enclosures exposed to wide ambient swings and repeated surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27A (STMicroelectronics) | VBR = 28.9–32.1 V, VC = 43.5 V @ 13.8 A, same SMB package, AEC-Q101 qualified | Higher clamping voltage reduces margin for 36 V systems; lower IPPM limits energy absorption | Acceptable where higher VC is tolerable and surge energy is lower than ISO 7637-2 Pulse 5a requirements. |
| SMCJ27A (Littelfuse) | VBR = 28.9–32.1 V, VC = 43.5 V @ 23.3 A, larger SMC (DO-214AB) package, AEC-Q101 qualified | Higher PPPM (1500 W) but incompatible footprint; requires PCB redesign | Only suitable if board layout allows SMC package and higher clamping voltage is acceptable for protected ICs. |
Compared with SMBJ27A and SMCJ27A, the TPSMB27A-1BHE3_A/I offers tighter VBR tolerance (±5%), lower VC, and identical SMB footprint with AEC-Q101 qualification - making it optimal for space-constrained automotive and industrial designs demanding precise clamping and drop-in manufacturability.
Availability
TPSMB27A-1BHE3_A/I is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interfaces, and telecom DC power protection requiring stable component supply, AEC-Q101 compliance, and SMB package consistency.
Supply support for TPSMB27A-1BHE3_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, MOSFETs, and protection devices with emphasis on high-reliability, high-temperature, and automotive-grade performance.
The TPSMB series belongs to Vishay's PAR® transient voltage suppressor family, engineered specifically for robust, high-energy surge suppression in harsh-environment applications including engine control, ADAS, and industrial automation.
FAQ
What is the exact breakdown voltage range for TPSMB27A-1BHE3_A/I?
The TPSMB27A-1BHE3_A/I has a guaranteed breakdown voltage (VBR) range of 25.7 V to 28.4 V at test current IT = 1 mA, with nominal value 27.0 V. This specification is verified per ANSI/IEEE C62.35 and appears in the Electrical Characteristics table on page 2 of Vishay document 88406. The tight ±5% tolerance ensures predictable clamping onset in 24 V systems.
Is TPSMB27A-1BHE3_A/I AEC-Q101 qualified?
Yes, TPSMB27A-1BHE3_A/I is AEC-Q101 qualified. The "HE3" suffix in the part number explicitly denotes RoHS-compliant and AEC-Q101 qualified construction, as stated in the Mechanical Data section of Vishay document 88406. This qualification covers temperature cycling, humidity bias, and mechanical shock tests required for automotive electronics.
What does the "A/I" suffix mean in TPSMB27A-1BHE3_A/I?
The "A/I" suffix in TPSMB27A-1BHE3_A/I indicates revision level "A" and packaging in 13-inch diameter plastic tape and reel with 3200 units per reel. Per Vishay's Ordering Information table (page 2), "I" denotes the 13″ reel format, while "A" is the revision code - consistent across the TPSMBxxA family and confirmed in document 88406.
What is the maximum clamping voltage of TPSMB27A-1BHE3_A/I under surge conditions?
The TPSMB27A-1BHE3_A/I has a maximum clamping voltage (VC) of 37.5 V at peak pulse current IPPM = 16 A using the 10/1000 µs waveform. This value is measured per figure 1 and table on page 2 of Vishay document 88406 and defines the upper voltage limit imposed on protected circuits during worst-case transient events.
Can TPSMB27A-1BHE3_A/I be used in bidirectional configurations?
No, TPSMB27A-1BHE3_A/I is unidirectional only, as explicitly stated in the Features section of Vishay document 88406. It conducts surge current only when reverse-biased beyond VBR. For bidirectional protection, a separate device such as TPSMB27CA or dual-diode configuration is required - the TPSMB27A-1BHE3_A/I does not support symmetrical clamping.
TPSMB27A-1BHE3_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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
TPSMB27A-1BHE3_A/I FAQ
1.How can I place an order for TPSMB27A-1BHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB27A-1BHE3_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 TPSMB27A-1BHE3_A/I reliable?
The price and inventory of TPSMB27A-1BHE3_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 TPSMB27A-1BHE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMB27A-1BHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB27A-1BHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB27A-1BHE3_A/I?
TPSMB27A-1BHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB27A-1BHE3_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 TPSMB27A-1BHE3_A/I?
For technical support, including TPSMB27A-1BHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB27A-1BHE3_A/I requirements.
6.How does Aetrix verify that TPSMB27A-1BHE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMB27A-1BHE3_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 TPSMB27A-1BHE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMB27A-1BHE3_A/I?
All TPSMB27A-1BHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB27A-1BHE3_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 TPSMB27A-1BHE3_A/I part is unused and in its original packaging.
Return procedure for TPSMB27A-1BHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB27A-1BHE3_A/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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