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Vishay General Semiconductor - Diodes Division TPSMA43HE3_A/H
- Part No.:
- TPSMA43HE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA43HE3_A/H.pdf
- Description:
- TVS DIODE 34.8VWM 61.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,922
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Product details
Overview
TPSMA43HE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, rated for 43 V breakdown voltage (VBR = 40.9–45.2 V), 400 W peak pulse power (10/1000 µs), and 185 °C maximum junction temperature - deployed for clamping lightning- and switching-induced transients on automotive sensor signal lines and power rails.
For engineers reviewing the TPSMA43HE3_A/H datasheet, TPSMA43HE3_A/H pinout, TPSMA43HE3_A/H application, or TPSMA43HE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 5.0 µA max reverse leakage at 36.8 V, 59.3 V clamping voltage at 6.7 A surge current, and MSL Level 1 reflow compatibility up to 260 °C.
Technical Context
This TVS diode operates as a voltage-clamping protection device using passivated anisotropic rectifier technology, with breakdown triggered at 43 V nominal and clamping initiated within <1 ns response time. Its 185 °C junction rating enables operation in under-hood automotive environments without derating below 150 °C ambient.
The device delivers 400 W peak pulse power under standardized 10/1000 µs waveform conditions, with low incremental surge resistance ensuring stable clamping across repetitive surges at 0.01% duty cycle. It is qualified to AEC-Q101 and meets JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 40.9 V / 43.0 V / 45.2 V - defines precise voltage threshold at which avalanche conduction begins under 1 mA test current |
| VWM | 36.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 59.3 V at 6.7 A - clamped voltage during 400 W transient event, directly limiting downstream IC stress |
| PPPM | 400 W - peak pulse power handling capability per 10/1000 µs waveform, validated on 5.0 mm × 5.0 mm PCB copper pads |
| TJ max. | +185 °C - enables use in high-temperature automotive zones without thermal derating penalties |
| Polarity | Unidirectional - protects against positive transients only; cathode marked by band, anode unmarked |
| MSL Level | Level 1 (J-STD-020) - supports lead-free reflow up to 260 °C peak without moisture-related failure |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, matte tin-plated leads, UL 94 V-0 molding compound. Cathode identified by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when VLINE > VBR |
| Anode (unbanded end) | Reference/ground return path | Typically tied to system ground plane; completes clamping loop during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per JEDEC standards |
| 185 °C junction rating | Enables direct placement near heat sources (e.g., engine control units) without external thermal management |
| 400 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-to-ground) on properly routed PCB traces |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage margin between clamping and protected IC's absolute maximum rating |
| MSL Level 1 reflow compatibility | Eliminates bake preconditioning requirement, reducing manufacturing cost and process complexity |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) in engine control modules from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Voltage-clamping transient suppressor placed in parallel with protected IC input pins. Use Value: Limits transient voltage to ≤59.3 V during 6.7 A surge, preventing latch-up or gate oxide damage in 3.3 V/5 V interface ICs. | Use Scenario: Shielding digital input terminals of programmable logic controllers from inductive kickback generated by solenoid and relay coils. IC Role / Device Role / Timing Role: Fast-response shunt protector installed between field-side signal line and common reference rail. Use Value: Sub-1 ns response ensures clamping activation before 12 V digital inputs exceed 20 V absolute maximum rating. |
| Telecom Power Rail Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding DC-DC converter inputs in base station power supplies exposed to lightning-induced surges on -48 V telecom distribution lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on bulk input rail upstream of regulation stage. Use Value: 400 W pulse rating absorbs 10/1000 µs transients up to 4 kV without degradation, maintaining supply continuity. | Use Scenario: Suppressing commutation spikes on microcontroller GPIO lines driving brushed DC motors in smart home appliances. IC Role / Device Role / Timing Role: Localized transient absorber mounted adjacent to motor driver IC output pins. Use Value: 185 °C rating allows placement near motor drivers without thermal derating, preserving clamping performance at 125 °C board temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A-E3/5A (Vishay) | Same VBR range (40.9–45.2 V), identical SMA package, but not AEC-Q101 qualified and rated for 400 W at 25 °C only (no 185 °C TJ spec) | Limited to commercial/industrial use; unsuitable for automotive under-hood deployment | Select TPSMA43HE3_A/H when AEC-Q101 compliance and extended temperature operation are mandatory |
| 1.5SMC43A (ON Semiconductor) | Same VBR and PPPM, DO-214AB (SMB) package - larger footprint (5.3 mm × 4.1 mm vs. SMA's 4.9 mm × 3.9 mm), 150 °C TJ max | Requires PCB layout change; lower thermal endurance limits use in high-ambient zones | Choose TPSMA43HE3_A/H for space-constrained automotive PCBs requiring 185 °C operation and AEC-Q101 validation |
Compared with SMAJ43A-E3/5A and 1.5SMC43A, the TPSMA43HE3_A/H uniquely combines AEC-Q101 qualification, 185 °C junction rating, and SMA footprint - enabling drop-in replacement in automotive designs where thermal headroom and qualification traceability are critical.
Availability
TPSMA43HE3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom power rail safeguarding requiring stable component supply, full AEC-Q101 documentation, and long-term lifecycle support.
Supply support for TPSMA43HE3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, power efficiency, and automotive-grade qualification.
The TPSMA43HE3_A/H belongs to Vishay's PAR® series of transient voltage suppressors - engineered specifically for high-reliability clamping in harsh-environment applications including automotive powertrain, ADAS sensors, and industrial automation systems.
FAQ
What is the breakdown voltage tolerance for TPSMA43HE3_A/H?
The TPSMA43HE3_A/H has a specified breakdown voltage range of 40.9 V to 45.2 V at 1.0 mA test current (VBR min/typ/max), corresponding to ±5% tolerance around the nominal 43 V rating. This tight tolerance ensures consistent clamping behavior across production lots and supports reliable design margining for protected ICs.
Is TPSMA43HE3_A/H RoHS-compliant and halogen-free?
Yes, the TPSMA43HE3_A/H is RoHS-compliant and halogen-free. Per Vishay's ordering nomenclature, the "HE3" suffix denotes RoHS compliance and AEC-Q101 qualification, while "HM3" indicates halogen-free, RoHS-compliant, and AEC-Q101 qualified versions. The HE3 variant meets JEDEC J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance requirements.
What is the maximum clamping voltage of TPSMA43HE3_A/H under surge conditions?
The maximum clamping voltage (VC) of TPSMA43HE3_A/H is 59.3 V at 6.7 A peak pulse current (IPPM), measured with a 10/1000 µs waveform. This value represents the upper limit of voltage seen by downstream circuitry during a 400 W transient event and is critical for verifying compatibility with the absolute maximum ratings of protected ICs.
Can TPSMA43HE3_A/H be used in bidirectional protection circuits?
No, TPSMA43HE3_A/H is unidirectional only, as explicitly stated in the Vishay datasheet. It protects against positive transients relative to ground and must be oriented with the cathode band toward the protected line. For bidirectional protection, a separate device such as the TPSMA43CA (center-tapped, bidirectional variant) is required - TPSMA43HE3_A/H does not support reverse-polarity surge suppression.
What is the thermal derating behavior of TPSMA43HE3_A/H above 25 °C ambient?
TPSMA43HE3_A/H follows standard thermal derating per Figure 2 in the datasheet: peak pulse power decreases linearly from 400 W at 25 °C to zero at 185 °C junction temperature. At 125 °C ambient (assuming typical θJA), usable pulse power remains ≥220 W - enabling robust operation in under-hood automotive environments without additional heatsinking.
TPSMA43HE3_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):
- 34.8V
- Voltage - Breakdown (Min):
- 38.7V
- Voltage - Clamping (Max) @ Ipp:
- 61.9V
- Current - Peak Pulse (10/1000µs):
- 6.5A
- 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)
TPSMA43HE3_A/H FAQ
1.How can I place an order for TPSMA43HE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA43HE3_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 TPSMA43HE3_A/H reliable?
The price and inventory of TPSMA43HE3_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 TPSMA43HE3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMA43HE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA43HE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA43HE3_A/H?
TPSMA43HE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA43HE3_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 TPSMA43HE3_A/H?
For technical support, including TPSMA43HE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA43HE3_A/H requirements.
6.How does Aetrix verify that TPSMA43HE3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMA43HE3_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 TPSMA43HE3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMA43HE3_A/H?
All TPSMA43HE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA43HE3_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 TPSMA43HE3_A/H part is unused and in its original packaging.
Return procedure for TPSMA43HE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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