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Vishay General Semiconductor - Diodes Division TPSMB43AHM3_A/I
- Part No.:
- TPSMB43AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB43AHM3_A/I.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,208
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Product details
Overview
TPSMB43AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive and lightning-induced transients on power rails and signal lines. It features a 43 V breakdown voltage (VBR = 40.9–45.2 V at 1 mA), 36.8 V maximum working voltage (VWM), 600 W peak pulse power (10/1000 µs), 10.1 A peak pulse current (IPPM), and 59.3 V clamping voltage (VC) - deployed in automotive engine control units, industrial sensor interfaces, and telecom power supplies.
For engineers reviewing the TPSMB43AHM3_A/I datasheet, TPSMB43AHM3_A/I pinout, TPSMB43AHM3_A/I application, or TPSMB43AHM3_A/I equivalent, key selection criteria include its AEC-Q101 qualification, 185 °C junction rating, SMB (DO-214AA) package compatibility, unidirectional polarity, and 1 µA reverse leakage at VWM - critical for high-reliability 12 V/24 V automotive and industrial power rail protection.
Technical Context
This TVS diode operates as a voltage-clamping device in parallel with protected circuitry, triggering when transient voltage exceeds its breakdown threshold to shunt surge current away from sensitive components. Its passivated anisotropic rectifier technology ensures stable VBR drift (αT = 0.092 %/°C) and low incremental surge resistance under repetitive 10/1000 µs pulses at 0.01 % duty cycle.
Designed for surface-mount assembly on PCBs with 5.0 mm × 5.0 mm copper pads per terminal, it sustains 75 A non-repetitive forward surge (8.3 ms half-sine) and maintains operation across –65 °C to +185 °C junction temperature, meeting JESD201 Class 2 whisker resistance and MSL Level 1 (260 °C reflow).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 40.9 V / 43.0 V / 45.2 V at 1 mA - defines precise clamping initiation threshold under standardized test conditions |
| VWM | 36.8 V - maximum continuous DC or RMS operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 59.3 V at 10.1 A - clamped voltage during 600 W transient, limiting stress on downstream ICs |
| PPPM | 600 W (10/1000 µs waveform) - peak surge energy handling capacity under standard lightning/inductive test profile |
| TJ max. | +185 °C - enables use in under-hood automotive environments and high-temperature industrial enclosures |
| Polarity | Unidirectional - protects against positive transients only; cathode marked by band, anode unmarked |
| Package | SMB (DO-214AA) - industry-standard 2-pin SMD outline with 0.220" body length and matte tin-plated leads |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, 2-terminal device with cathode identified by molded color band. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); recommended pad layout: 5.59 mm × 1.52 mm per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VAK > VBR |
| Anode (unbanded end) | Reference/return path | Typically tied to system ground or low-impedance return plane for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for modern automotive and industrial electronics manufacturing |
| MSL Level 1 (260 °C) | Supports standard lead-free reflow without preconditioning or baking prior to assembly |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage exposure to protected ICs compared to higher-ratio TVS devices |
| 0.01 % duty cycle rating | Enables repeated surge suppression in systems with frequent switching events (e.g., solenoid drivers) |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Parallel-connected clamping device absorbing >600 W surges within nanoseconds. Use Value: Prevents latch-up or permanent damage to microcontrollers and CAN transceivers during ISO 7637-2 Pulse 5a events. |
Use Scenario: Safeguarding 4–20 mA analog sensor outputs in factory automation PLC modules. IC Role / Device Role / Timing Role: Fast-response overvoltage clamp on signal lines exposed to ESD and relay coil kickback. Use Value: Maintains signal integrity below 59.3 V clamping level while supporting ±1 kV ESD immunity per IEC 61000-4-2. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding 48 V PoE-powered equipment front-end from lightning-induced surges on Ethernet lines. IC Role / Device Role / Timing Role: Primary-level TVS placed upstream of DC-DC converters and hot-swap controllers. Use Value: Limits input voltage excursion to ≤59.3 V during 10/1000 µs transients, preserving upstream MOSFET gate oxide integrity. |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in smart home appliances. IC Role / Device Role / Timing Role: Snubber-style clamp across motor terminals or H-bridge freewheeling paths. Use Value: Enables reliable operation at 185 °C ambient with no derating required, extending motor driver lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43AHE3_A/I | Same VBR range (40.9–45.2 V), identical SMB package, but rated for 600 W with 10/1000 µs waveform and not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial/commercial designs where AEC-Q101 is not mandated | Select SMBJ43AHE3_A/I if cost sensitivity outweighs automotive compliance requirements |
| TPSMB43AHM3_A/H | Identical electrical specs and AEC-Q101 qualification; differs only in packaging - 7" tape reel (750 pcs) vs. 13" reel (3200 pcs) | No functional difference; choice depends solely on production volume and SMT line feeder compatibility | Choose TPSMB43AHM3_A/H for low-to-mid volume builds or prototyping with smaller reels |
Compared with TPSMB43AHM3_A/I, SMBJ43AHE3_A/I offers identical clamping performance but lacks automotive qualification, while TPSMB43AHM3_A/H provides identical functionality in a smaller reel format - enabling flexibility in procurement scale without compromising design integrity.
Availability
TPSMB43AHM3_A/I is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPSMB43AHM3_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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The TPSMB43AHM3_A/I belongs to Vishay's PAR® family of transient voltage suppressors, engineered specifically for robust, high-temperature-stable clamping in automotive power distribution and industrial control systems.
FAQ
What is the maximum operating temperature for the TPSMB43AHM3_A/I?
The TPSMB43AHM3_A/I has a maximum junction temperature (TJ) of +185 °C, validated per AEC-Q101 stress testing. This allows uninterrupted operation in under-hood automotive environments and high-ambient industrial settings without thermal derating. The device remains fully functional across –65 °C to +185 °C, and its VBR exhibits predictable drift (0.092 %/°C) over that full range. TPSMB43AHM3_A/I is therefore suited for engine control modules and motor drive inverters where thermal margins are tight.
Is the TPSMB43AHM3_A/I compatible with lead-free reflow processes?
Yes, the TPSMB43AHM3_A/I meets MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C, making it fully compatible with standard lead-free soldering profiles. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102, and the molding compound passes UL 94 V-0 flammability testing. No pre-baking is required before assembly, simplifying manufacturing flow for TPSMB43AHM3_A/I integration into high-volume SMT lines.
Does the TPSMB43AHM3_A/I have automotive qualification?
Yes, the TPSMB43AHM3_A/I is AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code suffix "HM3" (halogen-free, RoHS-compliant, and AEC-Q101 qualified). This qualification covers stress tests including temperature cycling, high-temperature operating life, and mechanical shock - ensuring suitability for automotive powertrain, body electronics, and ADAS subsystems. TPSMB43AHM3_A/I is explicitly designated for automotive use in Vishay's official ordering matrix.
What is the clamping voltage of the TPSMB43AHM3_A/I at its rated surge current?
The TPSMB43AHM3_A/I clamps to a maximum of 59.3 V when subjected to its rated peak pulse current of 10.1 A (10/1000 µs waveform). This VC value is measured under standardized test conditions and directly determines the maximum overvoltage imposed on protected circuitry. With a clamping ratio (VC/VBR) of approximately 1.38, TPSMB43AHM3_A/I delivers tighter voltage control than many competing TVS diodes in the same power class.
How does the TPSMB43AHM3_A/I differ from the HE3 version?
The TPSMB43AHM3_A/I and TPSMB43AHE3_A/I share identical electrical specifications and SMB package, but differ in material composition: HM3 denotes halogen-free construction, while HE3 is RoHS-compliant but not halogen-free. Both are AEC-Q101 qualified and meet JESD201 Class 2 whisker resistance. The choice between TPSMB43AHM3_A/I and TPSMB43AHE3_A/I depends on regional environmental regulations - HM3 is preferred for markets enforcing halogen restrictions (e.g., certain EU automotive OEMs).
TPSMB43AHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
TPSMB43AHM3_A/I FAQ
1.How can I place an order for TPSMB43AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB43AHM3_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 TPSMB43AHM3_A/I reliable?
The price and inventory of TPSMB43AHM3_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 TPSMB43AHM3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMB43AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB43AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB43AHM3_A/I?
TPSMB43AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB43AHM3_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 TPSMB43AHM3_A/I?
For technical support, including TPSMB43AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB43AHM3_A/I requirements.
6.How does Aetrix verify that TPSMB43AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMB43AHM3_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 TPSMB43AHM3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMB43AHM3_A/I?
All TPSMB43AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB43AHM3_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 TPSMB43AHM3_A/I part is unused and in its original packaging.
Return procedure for TPSMB43AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB43AHM3_A/I Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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