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Vishay General Semiconductor - Diodes Division TPSMA30AHE3/61T
- Part No.:
- TPSMA30AHE3/61T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA30AHE3/61T.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,787
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Product details
Overview
TPSMA30AHE3/61T from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode 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 at 1 mA), 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 +185 °C junction temperature - used in automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the TPSMA30AHE3/61T datasheet, TPSMA30AHE3/61T pinout, TPSMA30AHE3/61T application, or TPSMA30AHE3/61T equivalent, key selection criteria include unidirectional polarity, SMA (DO-214AC) 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 optimized for high-temperature stability and low incremental surge resistance. Its unidirectional architecture provides forward conduction only during reverse overvoltage events, with clamping initiated at VBR = 28.5 V min and sustained up to 41.4 V at 9.7 A IPPM.
Designed for automotive-grade reliability, the device meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), passes JESD201 Class 2 whisker testing, and supports operation from –65 °C to +185 °C. The 0.088 %/°C temperature coefficient of VBR enables predictable voltage shift across its full thermal range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 28.5 V / 30.0 V / 31.5 V at 1 mA - defines precise reverse breakdown initiation threshold for reliable clamping onset |
| VWM | 25.6 V - maximum continuous reverse working voltage before leakage exceeds 1 μA at 25 °C |
| VC @ IPPM | 41.4 V at 9.7 A - clamping voltage under standardized 10/1000 µs surge, limiting downstream voltage stress |
| PPPM | 400 W - peak pulse power handling capability with 0.01 % duty cycle, enabling robust transient absorption |
| TJ max. | +185 °C - extended junction temperature rating supporting under-hood automotive and high-ambient industrial use |
| Polarity | Unidirectional - blocks reverse current until breakdown, then clamps; not suitable for bidirectional AC line protection |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with cathode band marking and 5.0 mm × 5.0 mm copper pad requirement |
Pinout & Package
The TPSMA30AHE3/61T is housed in an SMA (DO-214AC) plastic package with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Polarity is marked by a cathode band at one end. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per datasheet fig. 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient clamp output node | Connected to protected line; conducts during overvoltage to shunt current to ground |
| Anode | Reference/return path | Typically tied to system ground or lower-potential rail; completes clamping current path |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable VBR and low leakage (<1 μA at VWM) over lifetime and temperature |
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements including HTGB, HTRB, and temperature cycling |
| MSL Level 1 rating | Compatible with standard SMT reflow profiles up to 260 °C peak, eliminating moisture sensitivity concerns |
| Low incremental surge resistance | Enables tighter clamping (VC − VBR = 11.4 V) and higher energy absorption without voltage overshoot |
| Fast response time | Sub-nanosecond turn-on ensures clamping activation before sensitive ICs experience damaging overvoltage |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges up to ±100 V. Use Value: Withstands 400 W pulses and operates reliably at +185 °C, meeting under-hood thermal requirements. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC inputs. IC Role / Device Role / Timing Role: Low-capacitance TVS on 4–20 mA or 0–10 V signal paths to suppress ESD and field-induced spikes. Use Value: 41.4 V clamping limits voltage seen by ADC front-end, preserving measurement integrity during transients. |
| Consumer Power Adapter Input Stage | Telecom DC Power Distribution |
Use Scenario: Secondary-side overvoltage suppression in wall adapters exposed to mains-borne surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on +5 V/+12 V outputs to prevent damage during open-load or regulation failure. Use Value: 25.6 V VWM allows safe operation across full load/line variation while clamping fast transients. | Use Scenario: DC feed protection in 48 V telecom systems subject to lightning-induced surges on distribution lines. IC Role / Device Role / Timing Role: Primary-stage TVS on -48 V return path to divert common-mode surges to chassis ground. Use Value: AEC-Q101 qualification and 185 °C rating support long-term reliability in sealed outdoor cabinets. |
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 SMA package, 30 V VBR, but rated for 400 W with 1.0 ms pulse (vs. 10/1000 µs); slightly higher VC = 48.4 V at 8.3 A | Lower clamping ratio (VC/VBR ≈ 1.61 vs. 1.38 for TPSMA30AHE3/61T) reduces protection margin | Select when legacy design uses SMAJ series and board layout is fixed; verify clamping headroom with actual surge profile |
| 1.5SMC33A | Larger SMC (DO-214AB) package, 33 V VBR, 1500 W rating; VC = 53.3 V at 28.3 A | Higher power handling but 3.3 mm longer body and 1.5× footprint - requires PCB redesign | Choose for higher-energy surge environments where space permits; not drop-in compatible due to package and VBR mismatch |
Compared with SMAJ30A and 1.5SMC33A, the TPSMA30AHE3/61T delivers tighter clamping (41.4 V), superior thermal capability (+185 °C), and AEC-Q101 qualification in the compact SMA outline - making it optimal for space-constrained, high-reliability automotive and industrial designs where precise voltage control and long-term stability are critical.
Availability
TPSMA30AHE3/61T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power distribution requiring stable component supply, AEC-Q101 compliance, and high-temperature operational assurance.
Supply support for TPSMA30AHE3/61T 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The TPSMA30AHE3/61T belongs to Vishay's PAR® transient voltage suppressor family, engineered for high-temperature stability and automotive-grade surge immunity in harsh electrical environments.
FAQ
What is the exact breakdown voltage range for TPSMA30AHE3/61T?
The TPSMA30AHE3/61T has a guaranteed breakdown voltage (VBR) range of 28.5 V to 31.5 V at 1.0 mA test current, with a nominal value of 30.0 V. This specification is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet document 88405, revision 23-Jan-2024. The TPSMA30AHE3/61T maintains this tolerance across its full operating temperature range.
Is TPSMA30AHE3/61T qualified for automotive applications?
Yes, the TPSMA30AHE3/61T is AEC-Q101 qualified, as indicated by the "HE3" suffix in its ordering code. It undergoes stress testing including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling to meet automotive reliability standards. The TPSMA30AHE3/61T is explicitly designated for automotive use in Vishay's documentation.
What is the maximum clamping voltage of TPSMA30AHE3/61T under surge conditions?
The TPSMA30AHE3/61T exhibits a maximum clamping voltage (VC) of 41.4 V at 9.7 A peak pulse current (IPPM) using the standardized 10/1000 µs waveform. This value is specified in the Electrical Characteristics table of the official datasheet and represents the upper limit of voltage imposed on protected circuitry during transient events.
Does TPSMA30AHE3/61T have bidirectional capability?
No, the TPSMA30AHE3/61T is strictly unidirectional. Its datasheet confirms "Available in uni-directional polarity only", and the device functions as a reverse-biased avalanche diode that clamps only when the cathode is driven positive relative to the anode. For bidirectional protection, a separate part such as TPSMA30CA would be required.
What is the thermal derating behavior of TPSMA30AHE3/61T above 25 °C ambient?
The TPSMA30AHE3/61T follows linear derating of peak pulse power (PPPM) above 25 °C ambient, per Figure 2 in datasheet 88405. At 100 °C ambient, PPPM is reduced to approximately 280 W; at 150 °C, it drops to ~160 W. Steady-state power (PD = 1.0 W) also derates linearly to zero at +185 °C junction temperature.
TPSMA30AHE3/61T 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)
TPSMA30AHE3/61T FAQ
1.How can I place an order for TPSMA30AHE3/61T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA30AHE3/61T 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 TPSMA30AHE3/61T reliable?
The price and inventory of TPSMA30AHE3/61T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA30AHE3/61T is usually 5 days.
3.What payment methods are accepted for TPSMA30AHE3/61T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA30AHE3/61T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA30AHE3/61T?
TPSMA30AHE3/61T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA30AHE3/61T 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 TPSMA30AHE3/61T?
For technical support, including TPSMA30AHE3/61T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA30AHE3/61T requirements.
6.How does Aetrix verify that TPSMA30AHE3/61T is sourced from the original manufacturer or authorized distributors?
All TPSMA30AHE3/61T 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 TPSMA30AHE3/61T meets industry standards.
7.What is the process for return or replacement of TPSMA30AHE3/61T?
All TPSMA30AHE3/61T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA30AHE3/61T, 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 TPSMA30AHE3/61T part is unused and in its original packaging.
Return procedure for TPSMA30AHE3/61T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA30AHE3/61T Tags
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