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Vishay General Semiconductor - Diodes Division TPSMB43AHE3/52T
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- Part No.:
- TPSMB43AHE3/52T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB43AHE3/52T.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,166
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Product details
Overview
TPSMB43AHE3/52T from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for clamping inductive and lightning-induced transients on power and signal lines. It features a 43 V breakdown voltage (VBR = 40.9–45.2 V at IT = 1 mA), 36.8 V stand-off voltage (VWM), 59.3 V clamping voltage (VC) at 10.1 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.
For engineers reviewing the TPSMB43AHE3/52T datasheet, TPSMB43AHE3/52T pinout, TPSMB43AHE3/52T application, or TPSMB43AHE3/52T equivalent, this page delivers verified electrical parameters, SMB (DO-214AA) package details, AEC-Q101 qualification status, thermal derating curves, and real-world use cases in automotive ECUs and industrial sensor interfaces.
Technical Context
The TPSMB43AHE3/52T functions as a unidirectional avalanche diode with passivated anisotropic rectifier technology, enabling fast response (<1 ns) and low incremental surge resistance. Its 185 °C maximum junction temperature supports operation in under-hood automotive environments without thermal derating penalties up to 125 °C ambient.
It delivers 600 W peak pulse power per 10/1000 µs waveform with 0.01% duty cycle, clamps at 59.3 V under 10.1 A surge, and maintains <1 µA reverse leakage at 36.8 V (TA = 25 °C) - meeting stringent requirements for ESD and load-dump immunity in ISO 7637-2 compliant systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 40.9 / 43.0 / 45.2 V at IT = 1 mA - defines minimum voltage at which avalanche conduction begins; ensures reliable triggering above system operating voltage. |
| VWM | 36.8 V - maximum continuous reverse working voltage; must exceed normal circuit operating voltage to prevent leakage or false triggering. |
| VC @ IPPM | 59.3 V at 10.1 A - clamped voltage during 10/1000 µs surge; determines maximum stress imposed on protected downstream ICs. |
| PPPM | 600 W - peak pulse power handling capability; enables robust protection against ISO 7637-2 Pulse 1, 2a, and 5a transients. |
| IFSM | 75 A - non-repetitive forward surge current (8.3 ms half-sine); supports high-energy load-dump events in 12 V automotive systems. |
| TJ max. | +185 °C - maximum junction temperature; allows placement near heat sources and validates AEC-Q101 qualification for automotive Grade 0/1. |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 0.220" × 0.130" footprint; compatible with automated SMT assembly and IPC-7351B land patterns. |
Pinout & Package
TPSMB43AHE3/52T uses the SMB (DO-214AA) package: a molded plastic case with matte tin-plated leads, cathode indicated by a color band. Dimensions: 4.57 mm × 3.30 mm × 2.20 mm (L × W × H), MSL Level 1, reflow-compatible up to 260 °C peak.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR; polarity must match PCB silkscreen marking. |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return plane; forms complete clamping loop; layout must minimize inductance to preserve clamping speed. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control units, body electronics, and ADAS sensors - meets stress test requirements for temperature cycling, HTRB, and ESD. |
| 185 °C junction rating | Enables direct placement on high-temperature PCB zones (e.g., near power converters or motor drivers) without external heatsinking or derating below 125 °C ambient. |
| 600 W peak pulse power (10/1000 µs) | Provides margin against repetitive load-dump transients (ISO 7637-2 Pulse 5a) and inductive switching spikes in 24 V industrial controls. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage exposure to protected ICs - critical for safeguarding 3.3 V or 5 V logic rails downstream of DC-DC converters. |
| MSL Level 1, 260 °C reflow compatible | Eliminates moisture sensitivity concerns and supports standard lead-free reflow profiles without pre-bake, reducing manufacturing complexity. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply inputs of engine control modules (ECMs) against ISO 7637-2 load-dump transients up to 35 V for 400 ms. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and input filter capacitor to clamp surges before they reach LDOs and microcontrollers. Use Value: Withstands 75 A single-pulse surge (IFSM) and maintains VC ≤ 59.3 V, preventing latch-up or damage to 5 V tolerant CAN transceivers and analog front-ends. |
Use Scenario: Shielding 4–20 mA current-loop sensor outputs in factory automation PLCs from EFT bursts and cable-coupled noise. IC Role / Device Role / Timing Role: Bidirectionally unclamped (via series resistor + TPSMB43AHE3/52T to ground) to absorb fast transients while preserving signal integrity. Use Value: Sub-1 ns response time and <1 µA leakage at 36.8 V ensure minimal offset error and no impact on loop accuracy during normal operation. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Safeguarding PoE-powered network switches against induced surges from nearby AC mains wiring or lightning coupling. IC Role / Device Role / Timing Role: Standoff-rated TVS on 48 V DC input stage, coordinated with upstream fuse and common-mode choke to meet IEC 61000-4-5 Level 3. Use Value: 600 W peak power rating and 59.3 V clamping enable compliance with EN 61000-4-5 2 Ω/12 Ω generator tests without secondary crowbar circuits. |
Use Scenario: Suppressing back-EMF spikes generated by brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Mounted across motor terminals in parallel with flyback diode to reduce voltage overshoot during PWM commutation. Use Value: 185 °C TJ rating allows mounting directly on motor driver PCBs near MOSFETs, eliminating discrete heatsink requirements and saving board space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A (Microchip) | Same SMB package, 43 V VBR, but rated at 400 W PPPM and only AEC-Q200 qualified (not Q101); higher VC = 69.4 V at 5.8 A. | Limited to non-safety-critical automotive modules or industrial controls where lower surge margin is acceptable. | Select SMAJ43A only if cost sensitivity outweighs need for full AEC-Q101 validation and 600 W headroom. |
| SMCJ43A (Littelfuse) | Same 43 V rating but in larger SMC (DO-214AB) package; 1500 W PPPM, VC = 69.4 V at 21.7 A; AEC-Q101 qualified. | Requires larger PCB area and different land pattern; suited for higher-energy transients where 600 W is insufficient. | Choose SMCJ43A when protecting 24 V systems exposed to severe load-dump or when board space permits larger footprint. |
Compared with SMAJ43A and SMCJ43A, the TPSMB43AHE3/52T uniquely balances AEC-Q101 qualification, 600 W surge capacity, and compact SMB footprint - making it optimal for space-constrained automotive ECUs requiring validated reliability without over-engineering.
Availability
TPSMB43AHE3/52T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power inputs requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101-compliant sourcing.
Supply support for TPSMB43AHE3/52T 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-grade performance.
The TPSMB series was engineered specifically for robust transient suppression in harsh-environment applications - targeting automotive power distribution, industrial automation, and infrastructure equipment where thermal stability and AEC-Q101 compliance are mandatory.
FAQ
What is the exact breakdown voltage range for TPSMB43AHE3/52T?
The TPSMB43AHE3/52T has a guaranteed breakdown voltage (VBR) range of 40.9 V to 45.2 V at test current IT = 1 mA, with nominal value 43.0 V. This range is measured per ANSI/IEEE C62.35 and confirmed in Vishay's official datasheet revision 23-Jan-2024 (Doc. #88406). The TPSMB43AHE3/52T must be selected with this window in mind when designing margin against system overvoltage thresholds.
Is TPSMB43AHE3/52T AEC-Q101 qualified?
Yes, the TPSMB43AHE3/52T is AEC-Q101 qualified - explicitly stated in the Vishay datasheet under "MECHANICAL DATA" and "ORDERING INFORMATION", where HE3 suffix denotes RoHS-compliant and AEC-Q101 qualified construction. This qualification covers temperature cycling, high-temperature reverse bias, and ESD testing per automotive reliability standards. The TPSMB43AHE3/52T is approved for use in Grade 0 and Grade 1 automotive applications.
What is the clamping voltage of TPSMB43AHE3/52T at its rated peak pulse current?
The TPSMB43AHE3/52T clamps to a maximum of 59.3 V at its specified peak pulse current (IPPM) of 10.1 A, using the standard 10/1000 µs double-exponential waveform. This value is measured under defined test conditions (mounted on 5.0 mm × 5.0 mm copper pads) and appears in the "ELECTRICAL CHARACTERISTICS" table of the Vishay datasheet. The TPSMB43AHE3/52T's low clamping ratio (VC/VBR ≈ 1.38) reflects optimized silicon design for minimal overvoltage stress.
Can TPSMB43AHE3/52T be used in bidirectional configurations?
No, the TPSMB43AHE3/52T is unidirectional only - clearly specified in the "FEATURES" section of the Vishay datasheet. It conducts surge current only from cathode to anode and must be oriented with the banded end toward the protected line. For bidirectional protection, two TPSMB43AHE3/52T devices in series opposition or a dedicated bidirectional TVS (e.g., TPSMB43CA) would be required. Using TPSMB43AHE3/52T in reverse polarity risks open-circuit failure during transients.
What is the maximum operating temperature for TPSMB43AHE3/52T?
The TPSMB43AHE3/52T has a maximum junction temperature (TJ) of +185 °C, verified per JEDEC JESD22-A108 and documented in the "MAXIMUM RATINGS" table. Its storage temperature range is identical (–65 °C to +185 °C). This rating enables operation in under-hood automotive locations and high-power industrial enclosures without thermal derating below 125 °C ambient - a key advantage of the TPSMB43AHE3/52T over standard 150 °C-rated TVS diodes.
TPSMB43AHE3/52T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 10.1A
- 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 (SMBJ)
TPSMB43AHE3/52T FAQ
1.How can I place an order for TPSMB43AHE3/52T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB43AHE3/52T 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 TPSMB43AHE3/52T reliable?
The price and inventory of TPSMB43AHE3/52T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB43AHE3/52T is usually 5 days.
3.What payment methods are accepted for TPSMB43AHE3/52T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB43AHE3/52T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB43AHE3/52T?
TPSMB43AHE3/52T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB43AHE3/52T 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 TPSMB43AHE3/52T?
For technical support, including TPSMB43AHE3/52T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB43AHE3/52T requirements.
6.How does Aetrix verify that TPSMB43AHE3/52T is sourced from the original manufacturer or authorized distributors?
All TPSMB43AHE3/52T 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 TPSMB43AHE3/52T meets industry standards.
7.What is the process for return or replacement of TPSMB43AHE3/52T?
All TPSMB43AHE3/52T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB43AHE3/52T, 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 TPSMB43AHE3/52T part is unused and in its original packaging.
Return procedure for TPSMB43AHE3/52T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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