My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TPSMB27AHM3_A/H
- Part No.:
- TPSMB27AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB27AHM3_A/H.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,835
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPSMB27AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for robust overvoltage protection of sensitive electronics. It features a 27 V nominal breakdown voltage (VBR = 25.7–28.4 V at 1 mA), 23.1 V maximum stand-off voltage (VWM), 37.5 V clamping voltage (VC) at 16 A peak pulse current, 600 W peak pulse power (10/1000 µs), and operates up to TJ = 185 °C - ideal for automotive power rail and sensor line protection.
For engineers reviewing the TPSMB27AHM3_A/H datasheet, TPSMB27AHM3_A/H pinout, TPSMB27AHM3_A/H application, or TPSMB27AHM3_A/H equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification, halogen-free RoHS compliance, and verified clamping performance under repetitive surge conditions.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping with low incremental surge resistance and excellent thermal stability. Its junction temperature rating of 185 °C enables operation in high-reliability automotive engine compartments and industrial motor drive environments.
The device responds within picoseconds to transients induced by inductive load switching or ESD events, maintaining <3.5 V forward voltage at 50 A and meeting MSL Level 1 (260 °C reflow). It is rated for 75 A non-repetitive forward surge current (8.3 ms half-sine) and exhibits a +0.087 %/°C temperature coefficient of VBR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 25.7–28.4 V at 1 mA - defines precise turn-on threshold for reliable overvoltage triggering |
| Stand-off Voltage VWM | 23.1 V max - ensures no conduction during normal 24 V system operation |
| Clamping Voltage VC | 37.5 V at 16 A (10/1000 µs) - limits downstream voltage stress to safe levels during surge |
| Peak Pulse Power | 600 W - sustains high-energy transients without failure under defined waveform conditions |
| Junction Temperature Range | −65 °C to +185 °C - supports under-hood automotive and industrial ambient extremes |
| Surge Current IPPM | 16 A (10/1000 µs) - validated peak current handling before clamping degradation |
| Polarity & Package | Unidirectional, SMB (DO-214AA) - standard footprint compatible with automated SMT assembly |
Pinout & Package
TPSMB27AHM3_A/H 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 |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VWM exceeded |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Halogen-free & RoHS-compliant | Meets global environmental regulations without compromising surge robustness or thermal performance |
| MSL Level 1 rating | Enables single-reflow assembly at 260 °C peak without moisture-induced damage |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage margin between trigger and clamp, enhancing system-level protection margin |
| Fast response time | Sub-nanosecond turn-on ensures suppression before sensitive ICs experience overstress |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply lines in engine control units (ECUs) against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and chassis ground to clamp transients above 23.1 V. Use Value: Withstands 600 W surges and operates reliably at 185 °C junction temperature, ensuring functional safety in under-hood environments. |
Use Scenario: Shielding analog outputs of pressure or temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across signal and ground to suppress fast transients without distorting low-bandwidth signals. Use Value: Clamps to 37.5 V at 16 A while adding negligible loading (<1 nA leakage at 23.1 V), preserving sensor accuracy. |
| Telecom DC Power Interface | Consumer Equipment USB/DC Input Protection |
|
Use Scenario: Safeguarding PoE-powered network switches and base station power inputs from lightning-induced surges. IC Role / Device Role / Timing Role: Primary front-end TVS on 48 V DC input rails, coordinated with upstream fuses and secondary filtering. Use Value: Delivers repeatable 600 W pulse handling and meets UL 94 V-0 flammability requirements for enclosed telecom enclosures. |
Use Scenario: Hardening 5–24 V DC inputs of smart home hubs, displays, and audio devices against user-handling ESD. IC Role / Device Role / Timing Role: Standalone unidirectional suppressor placed directly at connector entry point before LDO or DC-DC converter. Use Value: Halogen-free construction and AEC-Q101 qualification provide extended field-life assurance beyond consumer-grade alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ28A | 28 V VBR min (26.6–29.4 V), same SMB package, 400 W PPPM rating | Limited to lower-energy transients; not AEC-Q101 qualified | Acceptable for cost-sensitive industrial designs where 185 °C operation and automotive qualification are unnecessary |
| SMCJ28A | 28 V VBR, 1500 W PPPM, larger SMC (DO-214AB) package, same AEC-Q101 option available | Requires PCB layout change; higher clamping voltage (42.1 V at 35.2 A) | Preferred when system-level surge immunity requires >600 W capability and board space permits larger footprint |
Compared with SMAJ28A and SMCJ28A, the TPSMB27AHM3_A/H delivers optimal balance of automotive qualification, 600 W surge capacity, SMB footprint compatibility, and 37.5 V clamping - making it the preferred choice for space-constrained, high-reliability 24 V systems requiring zero layout revision.
Availability
TPSMB27AHM3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom power supplies, and consumer DC-input protection requiring stable component supply and long-term lifecycle support.
Supply support for TPSMB27AHM3_A/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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The TPSMB series belongs to Vishay's PAR® family of transient voltage suppressors, engineered specifically for high-temperature stability and AEC-Q101 compliance in automotive power distribution and sensor interface circuits.
FAQ
What is the exact breakdown voltage range for TPSMB27AHM3_A/H?
The TPSMB27AHM3_A/H has a guaranteed breakdown voltage (VBR) range of 25.7 V to 28.4 V at 1 mA test current, measured per ANSI/IEEE C62.35 standards. This specification is confirmed in the Vishay datasheet Document Number 88406, Revision 23-Jan-2024, and applies directly to the TPSMB27AHM3_A/H variant with HM3 suffix (halogen-free, RoHS-compliant, AEC-Q101 qualified).
Is TPSMB27AHM3_A/H suitable for automotive under-hood applications?
Yes, the TPSMB27AHM3_A/H is explicitly qualified to AEC-Q101 and rated for continuous operation up to 185 °C junction temperature. Its construction - including passivated anisotropic rectifier technology, MSL Level 1 reflow compatibility, and halogen-free molding compound - meets automotive under-hood reliability requirements. The TPSMB27AHM3_A/H is designated for automotive use via its HM3 suffix per Vishay's ordering nomenclature.
What is the clamping voltage of TPSMB27AHM3_A/H at its rated peak pulse current?
The TPSMB27AHM3_A/H clamps to a maximum of 37.5 V at 16 A peak pulse current (10/1000 µs waveform), as specified in the Electrical Characteristics table of the official Vishay datasheet. This value represents the upper limit of voltage seen by downstream circuitry during a standardized surge event and is a critical parameter for validating protection margins in 24 V systems.
Does TPSMB27AHM3_A/H have bidirectional polarity?
No, the TPSMB27AHM3_A/H is unidirectional only, as confirmed in the Features section of the Vishay datasheet: "Available in unidirectional polarity only." It functions as a single-quadrant suppressor - conducting surge current from cathode to anode when reverse-biased beyond VWM. Bidirectional variants are not offered in the TPSMBxxA family.
What package type does TPSMB27AHM3_A/H use, and what are its key mechanical attributes?
The TPSMB27AHM3_A/H uses the SMB (DO-214AA) surface-mount package, with dimensions of 4.57 mm × 3.94 mm × 2.20 mm (L × W × H). It features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, meets UL 94 V-0 flammability rating, and carries a cathode identification band. The package is MSL Level 1 rated for lead-free reflow up to 260 °C.
TPSMB27AHM3_A/H 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/H FAQ
1.How can I place an order for TPSMB27AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB27AHM3_A/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 TPSMB27AHM3_A/H reliable?
The price and inventory of TPSMB27AHM3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for TPSMB27AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB27AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB27AHM3_A/H?
TPSMB27AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB27AHM3_A/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 TPSMB27AHM3_A/H?
For technical support, including TPSMB27AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB27AHM3_A/H requirements.
6.How does Aetrix verify that TPSMB27AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMB27AHM3_A/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 TPSMB27AHM3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMB27AHM3_A/H?
All TPSMB27AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB27AHM3_A/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 TPSMB27AHM3_A/H part is unused and in its original packaging.
Return procedure for TPSMB27AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB27AHM3_A/H Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
