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Vishay General Semiconductor - Diodes Division TPSMB30AHM3_A/H
- Part No.:
- TPSMB30AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB30AHM3_A/H.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPSMB30AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching surges and lightning-induced transients on power rails and signal lines. It features a 30 V breakdown voltage (VBR = 28.5–31.5 V at 1 mA), 25.6 V stand-off voltage (VWM), 41.4 V maximum clamping voltage at 14.5 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 TPSMB30AHM3_A/H datasheet, TPSMB30AHM3_A/H pinout, TPSMB30AHM3_A/H application, or TPSMB30AHM3_A/H 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 10/1000 µs surge conditions.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable breakdown behavior across temperature and high reliability under repetitive surge stress. Its 185 °C maximum junction temperature and MSL Level 1 rating support reflow soldering at 260 °C peak and operation in under-hood automotive environments.
The device exhibits low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of fast-rising transients before downstream ICs or MOSFETs are damaged. Clamping occurs at 41.4 V with 14.5 A IPPM (10/1000 µs), maintaining safe voltage margins for 24 V nominal systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 28.5–31.5 V at 1 mA - defines precise voltage threshold where avalanche conduction begins, critical for accurate overvoltage trip point setting |
| Stand-off Voltage VWM | 25.6 V - maximum continuous reverse working voltage without significant leakage; ensures no false triggering in 24 V rail applications |
| Clamping Voltage VC | 41.4 V at 14.5 A (10/1000 µs) - actual voltage seen by protected circuit during worst-case surge; stays below 45 V for robust 3.3 V/5 V logic interface safety |
| Peak Pulse Power PPPM | 600 W - energy-handling capability under standardized 10/1000 µs waveform; sufficient for ISO 7637-2 Pulse 1/2a/5a automotive transients |
| Junction Temperature Range | −65 °C to +185 °C - enables deployment in engine control units, motor drives, and industrial PLCs exposed to extreme ambient heat |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.220" × 0.130" footprint; compatible with automated pick-and-place and reflow processes |
Pinout & Package
TPSMB30AHM3_A/H is housed in an SMB (DO-214AA) plastic package with cathode indicated by a color band. The device has two terminals: anode and cathode, with no internal circuitry or active control pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink node | Connected to protected line (e.g., 24 V rail); conducts avalanche current to ground during overvoltage events |
| Anode | Reference / ground return path | Typically tied to system ground plane; completes current path during clamping; must maintain low-inductance layout |
Key Features
| Feature | Design Value |
|---|---|
| 185 °C junction rating | Enables reliable operation in high-temperature automotive and industrial enclosures without derating or forced cooling |
| 600 W peak pulse power (10/1000 µs) | Withstands repeated ISO 7637-2 and IEC 61000-4-5 surge events without degradation in vehicle ECUs and power supplies |
| AEC-Q101 qualified (HM3 suffix) | Meets automotive stress test requirements including HTGB, H3TRB, and temperature cycling - certified for safety-critical subsystems |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage overshoot during transient suppression, reducing risk of latch-up or gate oxide damage in downstream MOSFETs |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free reflow profiles without moisture-related popcorning or delamination |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs in body control modules (BCM), lighting drivers, and HVAC actuators against load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power rail and chassis ground to clamp transients before they reach DC-DC converters or microcontrollers. Use Value: Maintains VC ≤ 41.4 V during 14.5 A surges, preserving 24 V system integrity and meeting ISO 16750-2 Class III/IV immunity requirements. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation equipment exposed to relay switching noise and ESD. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted directly at connector entry points to shunt fast transients before reaching ADC front-end or signal conditioning op-amps. Use Value: Sub-1 ns response ensures clamping before 100 ns rise-time transients propagate into sensitive analog stages, preventing data corruption or offset drift. |
| Telecom Power Supply Input | Consumer Appliance Motor Drive Protection |
Use Scenario: Guarding primary-side inputs of PoE-powered switches and base station power supplies against lightning-induced surges on AC/DC input stages. IC Role / Device Role / Timing Role: Primary-stage TVS connected across bulk capacitor inputs to absorb differential-mode surges before upstream rectifiers or controllers. Use Value: 600 W rating handles 10/1000 µs surges up to 1 kV common-mode per IEC 61000-4-5 Level 3, reducing need for multi-stage protection. |
Use Scenario: Suppressing back-EMF spikes generated by brushed DC motors in washing machines, vacuum cleaners, and power tools. IC Role / Device Role / Timing Role: Mounted across motor terminals or H-bridge outputs to clamp inductive turn-off spikes and prevent MOSFET avalanche failure. Use Value: 75 A IFSM rating supports repeated motor stall currents; 185 °C TJ rating withstands enclosure temperatures exceeding 105 °C during extended operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A | Same VBR range (28.5–31.5 V), but lower PPPM = 400 W; SMB package identical; not AEC-Q101 qualified | Limited to non-automotive industrial use; unsuitable for automotive under-hood deployment due to missing qualification | Select when cost sensitivity outweighs automotive compliance and 600 W surge margin is unnecessary |
| TPSMB30AHM3_A/I | Identical electrical specs and qualification; differs only in packaging: 3200-unit 13" tape-and-reel vs. 750-unit 7" reel | No functional difference; choice depends solely on production volume and SMT line feeder compatibility | Select for high-volume automated assembly requiring larger reels and reduced changeover frequency |
Compared with SMAJ30A and TPSMB30AHM3_A/I, the TPSMB30AHM3_A/H offers full AEC-Q101 qualification and 600 W surge capacity in the standard 7" reel format - making it the preferred choice for automotive Tier-1 suppliers and industrial OEMs requiring traceable, high-reliability TVS protection with verified thermal endurance.
Availability
TPSMB30AHM3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom power supplies, and consumer appliance motor drives requiring stable component supply and long-term lifecycle assurance.
Supply support for TPSMB30AHM3_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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on high-reliability, high-temperature, and automotive-qualified components.
The TPSMB series belongs to Vishay's PAR® transient voltage suppressor family, engineered specifically for robust surge immunity in harsh environments - targeting automotive, industrial, and telecom applications demanding AEC-Q101 compliance and 185 °C operational capability.
FAQ
What is the polarity configuration of the TPSMB30AHM3_A/H?
The TPSMB30AHM3_A/H is a unidirectional TVS diode, meaning it conducts only in reverse-bias avalanche mode. Its cathode is marked by a color band and must be connected toward the protected line (e.g., 24 V rail), while the anode connects to ground. This configuration blocks forward current and clamps only negative-going transients relative to ground - essential for protecting positive-supply rails.
Is the TPSMB30AHM3_A/H qualified for automotive applications?
Yes, the TPSMB30AHM3_A/H carries the HM3 suffix, confirming it is halogen-free, RoHS-compliant, and AEC-Q101 qualified. It has passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and unbiased highly accelerated stress testing (uHAST), making it suitable for automotive powertrain, body electronics, and ADAS subsystems per ISO/TS 16949 requirements.
What is the maximum clamping voltage of the TPSMB30AHM3_A/H under surge conditions?
The TPSMB30AHM3_A/H has a maximum clamping voltage (VC) of 41.4 V at 14.5 A peak pulse current using the standardized 10/1000 µs waveform. This value is measured per JEDEC standards and guarantees that protected circuitry will not experience voltages exceeding 41.4 V during worst-case transient events - critical for safeguarding 3.3 V or 5 V logic interfaces downstream.
Does the TPSMB30AHM3_A/H require derating at elevated ambient temperatures?
Yes, the TPSMB30AHM3_A/H must be derated above 25 °C ambient per Figure 2 in the datasheet. At 125 °C ambient, its peak pulse power drops to approximately 300 W (50 % of rated 600 W), and at 175 °C, it falls to ~120 W. Designers must apply this derating curve when sizing for under-hood or enclosed industrial environments to ensure sustained surge capability.
What is the package type and mounting compatibility of the TPSMB30AHM3_A/H?
The TPSMB30AHM3_A/H uses the SMB (DO-214AA) surface-mount package with dimensions of 4.57 mm × 3.94 mm × 2.29 mm. It is compatible with standard SMT reflow profiles (MSL Level 1, peak 260 °C), and its matte tin-plated leads meet J-STD-002 solderability requirements. Footprint matches IPC-7351B standard for DO-214AA, enabling drop-in replacement in existing layouts.
TPSMB30AHM3_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):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 14.5A
- 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)
TPSMB30AHM3_A/H FAQ
1.How can I place an order for TPSMB30AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB30AHM3_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 TPSMB30AHM3_A/H reliable?
The price and inventory of TPSMB30AHM3_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 TPSMB30AHM3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMB30AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB30AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB30AHM3_A/H?
TPSMB30AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB30AHM3_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 TPSMB30AHM3_A/H?
For technical support, including TPSMB30AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB30AHM3_A/H requirements.
6.How does Aetrix verify that TPSMB30AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMB30AHM3_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 TPSMB30AHM3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMB30AHM3_A/H?
All TPSMB30AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB30AHM3_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 TPSMB30AHM3_A/H part is unused and in its original packaging.
Return procedure for TPSMB30AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB30AHM3_A/H Tags
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Diodes Incorporated
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Diodes Incorporated
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