My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TPSMA30HE3_A/I
- Part No.:
- TPSMA30HE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA30HE3_A/I.pdf
- Description:
- TVS DIODE 24.3VWM 43.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,740
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPSMA30HE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, rated for 30 V breakdown voltage (VBR = 28.5–31.5 V at 1 mA), 400 W peak pulse power (10/1000 µs), and 41.4 V clamping voltage at 9.7 A surge current. It operates up to +185 °C junction temperature and is AEC-Q101 qualified for automotive electronics protection.
For engineers reviewing the TPSMA30HE3_A/I datasheet, TPSMA30HE3_A/I pinout, TPSMA30HE3_A/I application, or TPSMA30HE3_A/I equivalent, this device is selected for high-reliability overvoltage suppression on power rails and signal lines where fast response (<1 ns), low clamping ratio, and high-temperature stability are required - especially in automotive ECUs, industrial sensor interfaces, and DC power input stages.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology with optimized junction passivation, enabling stable operation at TJ = 185 °C and meeting MSL Level 1 (260 °C reflow). Its unidirectional polarity provides forward conduction capability while clamping reverse transients.
The device delivers 400 W peak pulse power per 10/1000 µs waveform with 0.01 % duty cycle, exhibits ≤1.0 µA reverse leakage at 25.6 V (VWM) and 150 °C, and achieves ≤3.5 V forward voltage at 25 A - supporting robust surge handling without latch-up in DC-biased protection circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 28.5 / 30.0 / 31.5 V at 1 mA - defines precise breakdown threshold for reliable triggering during overvoltage events |
| VWM | 25.6 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA at 25 °C |
| VC @ IPPM | 41.4 V at 9.7 A - clamping voltage limits downstream IC stress during 400 W transient surges |
| PPPM | 400 W (10/1000 µs) - peak pulse power rating determines survivability against lightning and inductive switching spikes |
| TJ max. | +185 °C - enables use in under-hood automotive environments and high-power industrial enclosures without derating |
| AEC-Q101 Qualified | Yes - certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 0.208" x 0.157" footprint and matte tin-plated leads |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case with cathode band marking; terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient clamp output node | Connected to protected line; conducts during reverse overvoltage to shunt energy to ground |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane to complete clamping current path |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier structure ensures stable VBR drift <0.088 %/°C and long-term reliability at 185 °C |
| Clamping performance | Low VC/VBR ratio of ~1.38 enables tighter voltage margin for 3.3 V/5 V/12 V rail protection |
| Surge robustness | 40 A IFSM (8.3 ms half-sine) supports repeated motor-switching or hot-plug events without degradation |
| Manufacturing compliance | RoHS-compliant, halogen-free option available (HM3 suffix), and JESD 201 Class 2 whisker tested |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump transients (ISO 7637-2 Pulse 5a) and alternator overshoot. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp >40 V spikes within nanoseconds. Use Value: Prevents damage to MCU power supplies and CAN transceivers by limiting clamped voltage to 41.4 V at 9.7 A. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: Low-capacitance TVS on differential or single-ended signal traces to absorb ±8 kV contact ESD per IEC 61000-4-2. Use Value: Maintains signal integrity with <1.0 µA leakage at 25.6 V, avoiding DC offset or loading errors in µA-level sensor circuits. |
| DC-DC Converter Input Stage | Telecom Power Interface |
Use Scenario: Safeguarding buck converter inputs against inductive kickback from upstream relays or solenoids. IC Role / Device Role / Timing Role: Fast-response TVS placed upstream of input filter capacitor to divert surge energy before reaching controller IC. Use Value: Withstands 400 W pulses and recovers instantly, eliminating need for series fusing or resettable PTCs in compact designs. |
Use Scenario: Protecting PoE-powered equipment front-ends from lightning-induced surges on Ethernet pairs or auxiliary DC lines. IC Role / Device Role / Timing Role: Primary clamping device on 48 V DC input rail, coordinated with gas discharge tubes for multi-stage protection. Use Value: AEC-Q101 qualification and 185 °C rating ensure operational continuity in outdoor telecom cabinets exposed to wide ambient swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A | Same VBR range (28.5–31.5 V), but SMB package (DO-214AA); 600 W PPPM, higher thermal mass, larger footprint | Better suited for higher-energy transients where PCB space allows; less ideal for ultra-dense automotive modules | Select SMBJ30A when surge energy exceeds 400 W or board layout permits 20 % larger pad area |
| 1.5SMC33A | Higher VBR (31.4–34.7 V), SMC package (DO-214AB); same 400 W rating but lower thermal resistance (RθJA ≈ 50 °C/W vs. SMA's 75 °C/W) | Offers improved power dissipation in sustained surge conditions; not AEC-Q101 qualified | Choose 1.5SMC33A for industrial power supplies needing enhanced thermal margin but no automotive certification |
Compared with SMBJ30A and 1.5SMC33A, TPSMA30HE3_A/I delivers AEC-Q101 qualification and minimal footprint in SMA, making it optimal for space-constrained automotive modules requiring validated reliability - whereas alternatives trade certification for power or thermal headroom.
Availability
TPSMA30HE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interface boards, and telecom power supply designs requiring stable component supply with full traceability and lifecycle support.
Supply support for TPSMA30HE3_A/I 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 high-reliability and automotive-grade solutions.
The TPSMA30HE3_A/I belongs to Vishay's PAR® family of transient voltage suppressors, engineered specifically for high-temperature, high-surge environments in automotive and industrial systems where failure is not an option.
FAQ
What is the clamping voltage of TPSMA30HE3_A/I at its rated peak pulse current?
The TPSMA30HE3_A/I has a maximum clamping voltage (VC) of 41.4 V at 9.7 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per JEDEC standards and ensures predictable voltage limiting during surge events, directly protecting downstream 3.3 V, 5 V, or 12 V logic and power circuitry without overstressing components.
Is TPSMA30HE3_A/I suitable for automotive applications?
Yes, TPSMA30HE3_A/I is AEC-Q101 qualified and explicitly designed for automotive use. Its 185 °C maximum junction temperature, MSL Level 1 reflow compatibility, and passivated junction structure meet stringent requirements for engine control units, body electronics, and ADAS sensors. The HE3 suffix confirms RoHS compliance and automotive qualification per Vishay's ordering nomenclature.
What is the difference between TPSMA30HE3_A/I and TPSMA30AHM3_A/I?
TPSMA30HE3_A/I is RoHS-compliant and AEC-Q101 qualified; TPSMA30AHM3_A/I adds halogen-free construction while retaining the same electrical specs and qualification. Both share identical VBR, VC, PPPM, and thermal ratings. The HM3 variant is selected when halogen-free materials are mandated by environmental policies or specific OEM requirements.
Does TPSMA30HE3_A/I have polarity markings, and how is it oriented on PCB?
Yes, TPSMA30HE3_A/I features a visible cathode band on the SMA (DO-214AC) package body. During PCB layout, the banded end must connect to the line being protected (e.g., 12 V rail), while the anode connects to ground. This orientation ensures correct unidirectional clamping behavior - reverse installation would prevent proper transient suppression and may cause catastrophic failure.
What is the maximum reverse leakage current for TPSMA30HE3_A/I at elevated temperature?
At VWM = 25.6 V and TJ = 150 °C, the TPSMA30HE3_A/I exhibits a maximum reverse leakage current (IR) of 1.0 µA. This low leakage preserves signal integrity and minimizes standby power loss in always-on automotive modules, even under sustained high-temperature operation - a key advantage over non-optimized TVS devices that exhibit exponential leakage rise above 125 °C.
TPSMA30HE3_A/I 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):
- 24.3V
- Voltage - Breakdown (Min):
- 27V
- Voltage - Clamping (Max) @ Ipp:
- 43.5V
- Current - Peak Pulse (10/1000µs):
- 9.2A
- 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)
TPSMA30HE3_A/I FAQ
1.How can I place an order for TPSMA30HE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA30HE3_A/I 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 TPSMA30HE3_A/I reliable?
The price and inventory of TPSMA30HE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA30HE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMA30HE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA30HE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA30HE3_A/I?
TPSMA30HE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA30HE3_A/I 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 TPSMA30HE3_A/I?
For technical support, including TPSMA30HE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA30HE3_A/I requirements.
6.How does Aetrix verify that TPSMA30HE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMA30HE3_A/I 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 TPSMA30HE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMA30HE3_A/I?
All TPSMA30HE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA30HE3_A/I, 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 TPSMA30HE3_A/I part is unused and in its original packaging.
Return procedure for TPSMA30HE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA30HE3_A/I 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 …
