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Vishay General Semiconductor - Diodes Division TPSMB33AHE3_A/H
- Part No.:
- TPSMB33AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB33AHE3_A/H.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:321
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Product details
Overview
TPSMB33AHE3_A/H 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 33 V breakdown voltage (VBR = 31.4–34.7 V at IT = 1 mA), 28.2 V stand-off voltage (VWM), 45.7 V maximum clamping voltage at 13.1 A peak pulse current, 600 W peak pulse power (10/1000 µs), and operates up to +185 °C junction temperature - deployed in automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the TPSMB33AHE3_A/H datasheet, TPSMB33AHE3_A/H pinout, TPSMB33AHE3_A/H application, or TPSMB33AHE3_A/H equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, TJ = 185 °C thermal rating, and clamping performance under repetitive 10/1000 µs surge conditions.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping with low incremental surge resistance and excellent response time (<1 ns). Its junction passivation enables operation at TJ = 185 °C, meeting high-reliability automotive requirements per AEC-Q101 when ordered with HE3 suffix.
The device is rated for 600 W peak pulse power (10/1000 µs waveform, 0.01% duty cycle), supports 75 A non-repetitive forward surge current (8.3 ms half-sine), and exhibits a typical VBR temperature coefficient of +0.089 %/°C - enabling predictable voltage shift across wide thermal ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 31.4 / 33.0 / 34.7 V at IT = 1 mA - defines precise clamping onset threshold for overvoltage detection |
| VWM | 28.2 V - maximum continuous reverse working voltage before leakage exceeds 1 µA |
| VC @ IPPM | 45.7 V at 13.1 A - actual clamped voltage during 600 W transient, limiting downstream stress |
| PPPM | 600 W (10/1000 µs) - surge energy handling capacity compatible with IEC 61000-4-5 Level 4 |
| TJ max. | +185 °C - enables placement near hot components (e.g., power MOSFETs, DC/DC converters) without derating |
| Polarity | Unidirectional - protects against positive transients only; cathode band denotes terminal orientation |
| Package | SMB (DO-214AA) - industry-standard SMD outline with 0.205" × 0.220" footprint and MSL Level 1 rating |
Pinout & Package
SMB (DO-214AA) surface-mount package with matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified. Cathode identified by color band; terminals 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 sink node | Connected to protected line; conducts during overvoltage to clamp to VC relative to anode |
| Anode | Reference/return path | Typically tied to ground or lower-potential rail; completes conduction path during clamping event |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive powertrain and body electronics per stress test requirements |
| Junction passivated anisotropic rectifier | Enables stable VBR drift ≤ ±5% over lifetime and temperature cycling |
| 185 °C junction rating | Eliminates need for thermal derating in under-hood or high-power industrial environments |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a) |
| MSL Level 1, 260 °C reflow capable | Supports standard lead-free PCB assembly without moisture sensitivity concerns |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
|
Use Scenario: Protecting 24 V CAN/LIN bus power inputs from load dump and alternator transients in vehicle ECUs. IC Role / Device Role / Timing Role: Standoff clamping device placed between VBAT and ground, conducting only during >28.2 V events. Use Value: Limits voltage to ≤45.7 V during 600 W surges, preventing damage to downstream PMICs and microcontrollers. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Unidirectional shunt protector on 0–10 V or 4–20 mA output lines exposed to ESD and cable discharge. Use Value: Clamps sub-100 ns ESD pulses to <46 V while maintaining <1 µA leakage at 28.2 V for signal integrity. |
| Consumer Power Adapter Surge Suppression | Telecom DC Feed Protection |
|
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters and wireless charger power stages. IC Role / Device Role / Timing Role: Fast-response TVS parallel to output capacitor, absorbing flyback spikes from synchronous rectifiers. Use Value: Withstands 75 A surge (8.3 ms) and clamps within 1 ns, preserving output regulation and MOSFET reliability. |
Use Scenario: Protecting PoE-powered devices (e.g., IP cameras, access points) from induced surges on 48 V DC feed lines. IC Role / Device Role / Timing Role: Primary-line TVS on midspan injector output, rated for continuous 28.2 V operation and 600 W transients. Use Value: Maintains <1 µA leakage at VWM, avoiding quiescent current penalty while delivering 45.7 V clamping under IEC 61000-4-5 testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A | Same VWM/VC specs but lower PPPM (400 W), no AEC-Q101 qualification, SMA package (smaller thermal mass) | Limited to consumer-grade or non-automotive industrial use; unsuitable for under-hood deployment | Select when cost sensitivity outweighs automotive qualification and 600 W surge margin is not required. |
| SMCJ33A | Higher PPPM (1500 W), same VBR/VC, larger SMC (DO-214AB) package, AEC-Q101 available with HM3 suffix | Used where higher single-pulse energy absorption is needed (e.g., heavy industrial motor drives) | Choose when system-level surge testing exceeds IEC 61000-4-5 Level 4 or requires >600 W margin. |
Compared with SMAJ33A and SMCJ33A, the TPSMB33AHE3_A/H delivers optimal balance of AEC-Q101 compliance, 600 W capability, and SMB footprint - making it preferred for space-constrained automotive and industrial designs requiring validated reliability without package redesign.
Availability
TPSMB33AHE3_A/H is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom DC feed surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for TPSMB33AHE3_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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The TPSMB33AHE3_A/H belongs to Vishay's PAR® family of transient voltage suppressors - engineered specifically for robust, high-temperature clamping in safety-critical power and signal protection roles.
FAQ
What is the exact breakdown voltage range for TPSMB33AHE3_A/H?
The TPSMB33AHE3_A/H has a guaranteed breakdown voltage range of 31.4 V to 34.7 V at test current IT = 1 mA, measured per ANSI/IEEE C62.35. This range ensures consistent clamping behavior across production lots and supports reliable overvoltage detection in 24 V and 32 V systems where TPSMB33AHE3_A/H is commonly applied.
Is TPSMB33AHE3_A/H qualified for automotive use?
Yes, TPSMB33AHE3_A/H carries the HE3 suffix, indicating it is RoHS-compliant and AEC-Q101 qualified. This certification covers stress tests including HTGB, H3TRB, TC, AC/DC life test, and ESD - confirming suitability for automotive powertrain, body control, and ADAS modules where TPSMB33AHE3_A/H provides transient protection.
What does the "A/H" suffix mean in TPSMB33AHE3_A/H?
The "A/H" suffix in TPSMB33AHE3_A/H indicates packaging configuration: "A" denotes revision level A per Vishay's internal documentation, and "H" specifies 7" diameter plastic tape and reel packaging with 750 units per reel. This format ensures compatibility with standard SMT pick-and-place equipment used in high-volume manufacturing of boards where TPSMB33AHE3_A/H is deployed.
Can TPSMB33AHE3_A/H replace TPSMB33AHM3_A/H?
TPSMB33AHE3_A/H and TPSMB33AHM3_A/H share identical electrical specs and AEC-Q101 qualification, but differ in material composition: HE3 is RoHS-compliant; HM3 adds halogen-free compliance. Substitution is electrically valid, but HM3 must be selected if halogen-free requirements apply - TPSMB33AHE3_A/H remains appropriate for all other RoHS-regulated designs using TPSMB33AHE3_A/H.
What is the maximum clamping voltage of TPSMB33AHE3_A/H at rated surge current?
The TPSMB33AHE3_A/H clamps to a maximum of 45.7 V at its rated peak pulse current of 13.1 A (10/1000 µs waveform). This value is guaranteed across temperature and lot variations, ensuring downstream ICs see no more than 45.7 V during standardized surge events - a critical design parameter verified in every TPSMB33AHE3_A/H datasheet release.
TPSMB33AHE3_A/H 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):
- 28.2V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 45.7V
- Current - Peak Pulse (10/1000µs):
- 13.1A
- 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 (SMB)
TPSMB33AHE3_A/H FAQ
1.How can I place an order for TPSMB33AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB33AHE3_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 TPSMB33AHE3_A/H reliable?
The price and inventory of TPSMB33AHE3_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 TPSMB33AHE3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMB33AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB33AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB33AHE3_A/H?
TPSMB33AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB33AHE3_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 TPSMB33AHE3_A/H?
For technical support, including TPSMB33AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB33AHE3_A/H requirements.
6.How does Aetrix verify that TPSMB33AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMB33AHE3_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 TPSMB33AHE3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMB33AHE3_A/H?
All TPSMB33AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB33AHE3_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 TPSMB33AHE3_A/H part is unused and in its original packaging.
Return procedure for TPSMB33AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB33AHE3_A/H Tags
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Diodes Incorporated
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