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Vishay General Semiconductor - Diodes Division TPSMA30AHE3_A/H
- Part No.:
- TPSMA30AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA30AHE3_A/H.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,966
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Product details
Overview
TPSMA30AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching and lightning-induced transients on power rails and signal lines. It features a 30 V breakdown voltage (VBR = 28.5–31.5 V), 400 W peak pulse power (10/1000 μs), 41.4 V maximum clamping voltage at 9.7 A, 1.0 W steady-state power dissipation, and operates up to TJ = 185 °C - used in automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the TPSMA30AHE3_A/H datasheet, TPSMA30AHE3_A/H pinout, TPSMA30AHE3_A/H application, or TPSMA30AHE3_A/H equivalent, key selection criteria include unidirectional polarity, SMA (DO-214AC) package compatibility, AEC-Q101 qualification status, TJ = 185 °C thermal rating, and clamping performance under 10/1000 μs surge conditions.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology with junction passivation optimized for high-temperature stability and reliability. Its unidirectional architecture provides low incremental surge resistance and fast response time to suppress transient overvoltages before downstream components are damaged.
The device is rated for 400 W peak pulse power per 10/1000 μs waveform at TA = 25 °C, derated linearly above that ambient temperature, and supports repetitive surges at 0.01 % duty cycle. It meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow peak temperature tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 28.5 V / 30.0 V / 31.5 V - precise breakdown threshold ensures reliable triggering before IC damage in 24 V systems |
| VWM | 25.6 V - maximum continuous reverse operating voltage compatible with 24 V nominal rail with margin |
| VC @ IPPM | 41.4 V - clamping voltage at 9.7 A limits stress on protected MOSFETs or regulators during surge events |
| PPPM | 400 W - peak pulse power handling capability for standard 10/1000 μs lightning/surge waveforms |
| TJ max. | 185 °C - enables operation in under-hood automotive environments and high-power industrial enclosures |
| IR @ VWM | 1.0 μA - ultra-low leakage preserves battery life in always-on sensor nodes and low-power modules |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 0.208" x 0.157" footprint and cathode band marking |
Pinout & Package
SMA (DO-214AC) package with molded epoxy body, matte tin-plated leads, and cathode identification via color band. Compliant with UL 94 V-0 flammability rating and J-STD-002 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal PN junction | Connected to protected circuit's higher-potential node (e.g., +24 V rail); absorbs positive transients |
| Anode (non-banded end) | Cathode of internal PN junction | Connected to ground or lower-potential reference; completes clamping path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22-A114 |
| 185 °C junction rating | Enables use in engine control units, DC-DC converters, and motor drivers without thermal derating penalties |
| 400 W 10/1000 μs pulse rating | Meets ISO 7637-2 Pulse 1, 2a, 3a/b and IEC 61000-4-5 Level 3 surge immunity requirements |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and single-reflow processing without dry-pack or baking preconditioning |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes voltage overshoot during clamping, reducing risk of latch-up or gate oxide stress in protected FETs |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 24 V supply inputs of body control modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and input filter capacitor. Use Value: Clamps transients to ≤41.4 V within nanoseconds, preventing damage to downstream LDOs and microcontrollers rated for 36 V absolute maximum. | Use Scenario: Shielding analog outputs of pressure sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: TVS connected across differential signal pair (e.g., 4–20 mA loop) referenced to local ground. Use Value: Limits induced common-mode surges to <42 V while maintaining sub-μA leakage to avoid signal offset errors in precision current loops. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Driver Stage |
Use Scenario: Safeguarding PoE-powered equipment front-end rectifiers and DC-DC controllers from Ethernet cable ESD and surge coupling. IC Role / Device Role / Timing Role: TVS installed at primary-side DC input after bridge rectifier and before bulk capacitor. Use Value: Absorbs 400 W surges without degradation, preserving system uptime in outdoor telecom cabinets exposed to lightning-induced coupling. | Use Scenario: Suppressing back-EMF spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, blenders). IC Role / Device Role / Timing Role: Mounted across motor terminals with short PCB traces to minimize inductance. Use Value: Fast response (<1 ns) and low VC prevent voltage doubling across MOSFETs, eliminating need for oversized gate drivers or snubbers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A | Same SMA package, 30 V VBR, but only 400 W PPPM and no AEC-Q101 qualification | Not approved for automotive production; suitable for industrial/commercial designs without automotive qualification mandates | Select SMAJ30A when AEC-Q101 is not required and cost optimization is prioritized |
| SMCJ30A | Larger SMC (DO-214AB) package, same 30 V VBR, higher 1500 W PPPM, but 2.5× footprint area and 3× thermal mass | Better suited for high-energy surge zones (e.g., AC mains input), less ideal for space-constrained PCBs | Choose SMCJ30A where surge energy exceeds 400 W or board layout allows larger footprint |
Compared with SMAJ30A and SMCJ30A, the TPSMA30AHE3_A/H delivers automotive-grade reliability in the smallest standardized surface-mount TVS footprint, enabling compact, high-temperature-stable protection without sacrificing qualification compliance or clamping precision.
Availability
TPSMA30AHE3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power input protection requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for TPSMA30AHE3_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 solutions.
The TPSMA series belongs to Vishay's PAR® (Protected Anisotropic Rectifier) transient voltage suppressor product line, engineered specifically for robust, high-temperature-stable clamping in harsh automotive and industrial environments.
FAQ
What is the breakdown voltage range of the TPSMA30AHE3_A/H?
The TPSMA30AHE3_A/H has a guaranteed breakdown voltage range of 28.5 V to 31.5 V at 1.0 mA test current (VBR min/typ/max), measured per ANSI/IEEE C62.35. This tight tolerance ensures consistent clamping behavior across production lots and supports reliable design margining in 24 V systems where TPSMA30AHE3_A/H is commonly deployed.
Is the TPSMA30AHE3_A/H AEC-Q101 qualified?
Yes, the TPSMA30AHE3_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 HTGB, H3TRB, and temperature cycling, making TPSMA30AHE3_A/H suitable for automotive powertrain and chassis applications.
What is the maximum clamping voltage of the TPSMA30AHE3_A/H at its rated peak pulse current?
The TPSMA30AHE3_A/H exhibits a maximum clamping voltage (VC) of 41.4 V at its rated peak pulse current (IPPM) of 9.7 A under 10/1000 μs waveform conditions. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during surge events, directly impacting safe operating area margins for downstream components.
Does the TPSMA30AHE3_A/H have unidirectional or bidirectional polarity?
The TPSMA30AHE3_A/H is unidirectional only, as explicitly stated in the Vishay datasheet. Its polarity is marked by a cathode band; it conducts and clamps only for positive transients relative to ground. Bidirectional variants (e.g., TPSMA30CA) are separate part numbers and are not interchangeable with TPSMA30AHE3_A/H without circuit redesign.
What is the thermal rating and package type of the TPSMA30AHE3_A/H?
The TPSMA30AHE3_A/H uses the SMA (DO-214AC) surface-mount package and is rated for a maximum junction temperature of 185 °C. Its package dimensions are 4.93 mm × 3.99 mm × 2.29 mm (L × W × H), with matte tin-plated leads compliant with J-STD-002 and JESD22-B102, supporting lead-free reflow up to 260 °C peak.
TPSMA30AHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 9.7A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
TPSMA30AHE3_A/H FAQ
1.How can I place an order for TPSMA30AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA30AHE3_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 TPSMA30AHE3_A/H reliable?
The price and inventory of TPSMA30AHE3_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 TPSMA30AHE3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMA30AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA30AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA30AHE3_A/H?
TPSMA30AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA30AHE3_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 TPSMA30AHE3_A/H?
For technical support, including TPSMA30AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA30AHE3_A/H requirements.
6.How does Aetrix verify that TPSMA30AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMA30AHE3_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 TPSMA30AHE3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMA30AHE3_A/H?
All TPSMA30AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA30AHE3_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 TPSMA30AHE3_A/H part is unused and in its original packaging.
Return procedure for TPSMA30AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA30AHE3_A/H Tags
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Diodes Incorporated
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