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Vishay General Semiconductor - Diodes Division TPSMB30AHE3_A/H
- Part No.:
- TPSMB30AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB30AHE3_A/H.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,218
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Product details
Overview
TPSMB30AHE3_A/H 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 rails and signal lines. It features a 30 V breakdown voltage (VBR = 28.5–31.5 V at IT = 1 mA), 25.6 V stand-off voltage (VWM), 41.4 V maximum clamping voltage (VC) at 14.5 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 in engine control units.
For engineers reviewing the TPSMB30AHE3_A/H datasheet, TPSMB30AHE3_A/H pinout, TPSMB30AHE3_A/H application, or TPSMB30AHE3_A/H equivalent, this page delivers verified electrical parameters, SMB (DO-214AA) package details, AEC-Q101 qualification status, thermal derating curves, and real-world surge immunity context for high-reliability 12 V/24 V systems.
Technical Context
The TPSMB30AHE3_A/H uses passivated anisotropic rectifier technology with optimized junction passivation for stable clamping under repetitive surge stress. Its unidirectional polarity enables DC-biased rail protection without reverse conduction during normal operation.
Rated for 75 A non-repetitive forward surge current (8.3 ms half-sine), it maintains low incremental surge resistance and fast response time (<1 ns), ensuring effective suppression of ESD and load-dump transients before downstream ICs or MOSFETs are damaged.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 28.5 / 30.0 / 31.5 V at 1 mA - defines precise clamping onset threshold for 24 V nominal systems |
| VWM | 25.6 V - ensures no leakage or conduction during normal 24 V rail operation |
| VC @ IPPM | 41.4 V at 14.5 A - limits worst-case transient voltage seen by protected circuitry |
| PPPM | 600 W (10/1000 µs) - sustains high-energy surges common in automotive load-dump events |
| TJ max. | +185 °C - supports under-hood placement in AEC-Q101-compliant automotive modules |
| Package | SMB (DO-214AA) - industry-standard SMD footprint with 0.220" × 0.205" pad layout and MSL Level 1 reflow compatibility |
| AEC-Q101 | Qualified - validated for automotive-grade reliability per stress test requirements |
Pinout & Package
TPSMB30AHE3_A/H is housed in an SMB (DO-214AA) surface-mount package with cathode indicated by a color band. The device has two terminals: anode and cathode, with no internal connections beyond the PN junction.
| 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 |
|---|---|
| Junction passivation | Enables stable VBR drift < ±5 % over 1000 hrs at 150 °C, critical for long-life automotive modules |
| 185 °C TJ rating | Permits direct mounting near heat sources (e.g., power converters) without thermal derating penalties |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 5a (load dump) up to 120 V/100 ms in 24 V systems |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage margin required for protected MOSFETs or CAN transceivers |
| MSL Level 1 | Allows unlimited floor life and single-reflow processing at 260 °C peak, simplifying SMT manufacturing |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital Input Module |
|---|---|
|
Use Scenario: Protecting 24 V supply input of microcontroller-based ECU against alternator load dump and inductive coil switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between VIN and GND, acting as primary overvoltage clamp. Use Value: Limits transient voltage to ≤41.4 V, preventing damage to 33 V-rated LDOs and 5 V/3.3 V regulators downstream. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Standoff protector on each optocoupler input line, absorbing induced noise from relay coils and motor drives. Use Value: Maintains VWM = 25.6 V to avoid false triggering while clamping >1 kV transients to safe levels within nanoseconds. |
| Telecom Power Supply Front-End | Consumer Appliance Motor Driver Board |
|
Use Scenario: Guarding AC/DC adapter output rails against lightning-induced surges entering via PoE or external power inputs. IC Role / Device Role / Timing Role: Secondary-level TVS on +24 V DC bus, coordinated with upstream MOVs and fuses. Use Value: Provides precise 30 V clamping with 600 W capability, enabling compact design without oversized bulk capacitance. |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Flyback diode replacement with superior surge handling and faster response than standard rectifiers. Use Value: Withstands 75 A 8.3 ms surge current, eliminating need for parallel diodes or snubbers in cost-sensitive motor control PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A | Lower PPPM = 400 W; VC = 48.4 V at 8.3 A; same SMB package; not AEC-Q101 qualified | Acceptable for industrial/commercial 24 V systems but unsuitable for automotive under-hood use | Select SMAJ30A only if AEC-Q101 compliance and 600 W surge margin are not required. |
| SMCJ30A | Higher PPPM = 1500 W; VC = 48.4 V at 31 A; larger SMC (DO-214AB) package; AEC-Q101 available (SMCJ30AHM3) | Used where higher energy absorption is needed (e.g., heavy-duty truck ECUs), but requires PCB area increase | Choose SMCJ30A when system-level surge testing exceeds ISO 7637-2 Pulse 5b; verify board space and thermal relief. |
Compared with SMAJ30A and SMCJ30A, the TPSMB30AHE3_A/H delivers optimal balance of AEC-Q101 qualification, 600 W capability, SMB footprint, and 41.4 V clamping - making it the preferred choice for space-constrained, high-reliability 24 V automotive and industrial power protection.
Availability
TPSMB30AHE3_A/H is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC input modules, telecom power supplies, and consumer appliance motor drivers requiring stable component supply across extended temperature and surge conditions.
Supply support for TPSMB30AHE3_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 automotive, industrial, and computing markets.
The TPSMB30AHE3_A/H belongs to Vishay's PAR® TVS family, engineered specifically for robust transient suppression in harsh environments - emphasizing high-temperature stability, AEC-Q101 compliance, and repeatable clamping performance under repetitive surge stress.
FAQ
What is the exact breakdown voltage range for TPSMB30AHE3_A/H?
The TPSMB30AHE3_A/H has a guaranteed breakdown voltage (VBR) range of 28.5 V to 31.5 V at 1 mA test current, per Vishay Document Number 88406. This tight tolerance ensures consistent clamping behavior across production lots and supports reliable design margins for 24 V systems. The nominal VBR is 30.0 V, and the device is characterized at TA = 25 °C unless otherwise noted.
Is TPSMB30AHE3_A/H AEC-Q101 qualified?
Yes, TPSMB30AHE3_A/H is AEC-Q101 qualified - confirmed by Vishay's ordering code suffix "HE3", which denotes RoHS-compliant and AEC-Q101-qualified variants. This qualification covers stress tests including HTRB, HTGB, TCT, and surge endurance, validating its suitability for automotive under-hood applications up to +185 °C junction temperature.
What does the "_A/H" suffix mean in TPSMB30AHE3_A/H?
The "_A/H" suffix in TPSMB30AHE3_A/H indicates revision level "A" and packaging in 7" diameter plastic tape and reel (package code H), with a base quantity of 750 units. This matches Vishay's ordering information table in Document 88406, where "H" denotes the 7" reel format and "A" is the revision identifier for the die and assembly process.
Can TPSMB30AHE3_A/H replace SMAJ30A in existing designs?
TPSMB30AHE3_A/H is not a direct drop-in replacement for SMAJ30A due to differences in clamping voltage (41.4 V vs. 48.4 V) and peak pulse power (600 W vs. 400 W). While both use SMB packages, the lower VC and higher PPPM of TPSMB30AHE3_A/H may improve protection margin - but layout review and surge testing are required before substitution, especially in automotive applications.
What is the maximum operating temperature for TPSMB30AHE3_A/H?
The TPSMB30AHE3_A/H has a maximum junction temperature (TJ) rating of +185 °C, verified per Vishay's thermal characterization and AEC-Q101 qualification. This allows continuous operation in high-ambient environments such as engine compartments, provided PCB copper pads meet the 0.2" × 0.2" (5.0 mm × 5.0 mm) minimum requirement specified for thermal derating.
Does TPSMB30AHE3_A/H have polarity markings, and how is it oriented on PCB?
Yes, TPSMB30AHE3_A/H features a cathode band printed on the body - the banded end is the cathode terminal and must be connected toward the protected line (e.g., 24 V rail), while the anode connects to ground. This unidirectional configuration ensures conduction only during positive overvoltage events, matching standard TVS placement conventions in power rail protection schematics.
TPSMB30AHE3_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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
TPSMB30AHE3_A/H FAQ
1.How can I place an order for TPSMB30AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB30AHE3_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 TPSMB30AHE3_A/H reliable?
The price and inventory of TPSMB30AHE3_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 TPSMB30AHE3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMB30AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB30AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB30AHE3_A/H?
TPSMB30AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB30AHE3_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 TPSMB30AHE3_A/H?
For technical support, including TPSMB30AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB30AHE3_A/H requirements.
6.How does Aetrix verify that TPSMB30AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMB30AHE3_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 TPSMB30AHE3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMB30AHE3_A/H?
All TPSMB30AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB30AHE3_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 TPSMB30AHE3_A/H part is unused and in its original packaging.
Return procedure for TPSMB30AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB30AHE3_A/H Tags
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Diodes Incorporated
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Diodes Incorporated
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