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Vishay General Semiconductor - Diodes Division SMB10J33AHE3_B/H
- Part No.:
- SMB10J33AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J33AHE3_B/H.pdf
- Description:
- 1KW,33V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,145
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Product details
Overview
SMB10J33AHE3_B/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection with 33 V standoff voltage (VWM), 36.7–40.6 V breakdown voltage (VBR), and 1000 W peak pulse power (10/1000 µs). It clamps transients to ≤53.3 V at 18.8 A peak surge current and is AEC-Q101 qualified for automotive electronics.
For engineers reviewing the SMB10J33AHE3_B/H datasheet, SMB10J33AHE3_B/H pinout, SMB10J33AHE3_B/H application, or SMB10J33AHE3_B/H equivalent, this device is selected for robust overvoltage protection on power rails and signal lines where fast response (<1 ns), low clamping ratio, and automotive-grade reliability are required.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response to ESD and lightning-induced transients. Its 1000 W peak pulse power rating (10/1000 µs waveform) and 150 °C maximum junction temperature support sustained operation in harsh environments.
The device features low incremental surge resistance and meets MSL level 1 per J-STD-020 (260 °C reflow peak), with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102. Polarity is marked by a cathode band; no marking on bidirectional variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 33 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe operating margin for 33 V nominal systems. |
| VBR (Breakdown Voltage) | 36.7–40.6 V at 1 mA - Confirmed minimum/maximum threshold where avalanche conduction begins; ensures predictable turn-on behavior. |
| VC (Clamping Voltage) | ≤53.3 V at 18.8 A IPPM - Measured peak voltage across device during 10/1000 µs surge; determines protected circuit's maximum stress level. |
| PPPM (Peak Pulse Power) | 1000 W (10/1000 µs) - Sustained energy-handling capability under standardized surge waveform; validates suitability for IEC 61000-4-5 Level 4 compliance. |
| ID (Reverse Leakage) | ≤1.0 µA at 33 V - Ultra-low leakage preserves system efficiency and prevents false triggering in high-impedance circuits. |
| TJ max | 150 °C - Enables reliable operation in under-hood automotive or industrial ambient conditions without derating below 125 °C ambient. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronic modules per stress test requirements including HTGB, HTRB, and TCT; supports PPAP documentation. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with molded UL 94 V-0 compound. Cathode indicated by color band on one end; anode is unmarked.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line (e.g., 33 V rail); conducts surge current to ground when voltage exceeds VBR. |
| Anode (unmarked end) | Reference/ground return path | Typically tied to system ground plane; completes clamping path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift in automotive under-hood environments. |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, body control, and ADAS modules requiring zero-failure field performance. |
| MSL Level 1 rating | Supports standard SMT reflow profiles up to 260 °C peak without moisture-related popcorn failure. |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes voltage overshoot during surge events-critical for protecting 3.3 V or 5 V logic downstream of 33 V supply rails. |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and eliminates whisker growth risk per JESD 201 Class 2. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 33 V battery-supplied ECUs against load dump and alternator transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between 33 V input and chassis ground. Use Value: Limits transient voltage to ≤53.3 V, preventing damage to downstream DC/DC converters and microcontrollers rated for 40 V absolute maximum. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to 33 V supply in factory automation PLCs. IC Role / Device Role / Timing Role: Point-of-entry TVS on sensor VDD line to absorb coupling noise from nearby motor drives. Use Value: Sub-ns response and 1.0 µA leakage preserve signal integrity and prevent false readings during 1 kV EFT bursts. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Stage |
Use Scenario: Front-end protection for 33 V auxiliary supplies feeding PoE-powered switch controllers. IC Role / Device Role / Timing Role: Primary surge clamp on 33 V bias rail upstream of hot-swap controllers. Use Value: 1000 W PPPM rating handles repeated 10/1000 µs surges from induced lightning transients on Ethernet cabling. |
Use Scenario: Overvoltage guard on secondary-side 33 V output of AC/DC adapters used in smart home hubs. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing capacitor discharge spikes during plug/unplug events. Use Value: 33 V VWM aligns precisely with adapter nominal output, avoiding nuisance conduction while enabling full 1000 W surge absorption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33AHE3_A/H | Same SMB package, identical VWM (33 V) and VBR (36.7–40.6 V), but lower PPPM = 600 W (vs. 1000 W). | Suitable for lower-energy surge environments (e.g., consumer USB-C PD adapters), not recommended for ISO 7637-2 Pulse 5a. | Select SMB10J33AHE3_B/H when 1000 W surge handling is mandatory; choose SMBJ33AHE3_A/H only if space or cost constraints override power rating needs. |
| SMCJ33AHE3/73 | SMC (DO-214AB) package, same electrical specs (VWM = 33 V, PPPM = 1500 W), larger footprint (7.11 × 6.22 mm vs. SMB's 4.57 × 3.94 mm). | Better thermal dissipation for high-duty-cycle surges; requires PCB layout change due to larger pad area and pitch. | Choose SMB10J33AHE3_B/H for space-constrained automotive modules; select SMCJ33AHE3/73 only when higher power derating margin or extended thermal life is critical. |
Compared with SMBJ33AHE3_A/H and SMCJ33AHE3/73, SMB10J33AHE3_B/H uniquely balances 1000 W surge capacity, AEC-Q101 qualification, and SMB footprint-making it optimal for automotive and industrial designs where board area, reliability, and standardized surge immunity must coexist.
Availability
SMB10J33AHE3_B/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom line cards, and consumer power adapters requiring stable component supply with AEC-Q101 traceability and 1000 W surge resilience.
Supply support for SMB10J33AHE3_B/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 and automotive-grade validation.
The SMB10J series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density transient suppression in automotive, industrial, and telecom infrastructure where compact size and AEC-Q101 compliance are non-negotiable.
FAQ
What is the clamping voltage of SMB10J33AHE3_B/H at its rated peak pulse current?
The SMB10J33AHE3_B/H has a maximum clamping voltage (VC) of 53.3 V when subjected to its peak pulse current (IPPM) of 18.8 A under the standard 10/1000 µs waveform. This value is measured and guaranteed per the Vishay datasheet (Document Number: 88422, Rev. 09-Jan-2024), ensuring predictable overvoltage limiting for protected circuitry downstream of the SMB10J33AHE3_B/H.
Is SMB10J33AHE3_B/H suitable for automotive applications?
Yes, SMB10J33AHE3_B/H is explicitly AEC-Q101 qualified, as confirmed in the Vishay datasheet (Rev. 09-Jan-2024). Its construction-including glass-passivated junction, MSL Level 1 rating, and matte tin-plated leads-meets automotive reliability requirements for under-hood and body-control modules. The SMB10J33AHE3_B/H is designated for automotive use via the "HE3" suffix and "_B/H" tape-and-reel packaging code.
What does the "HE3" and "_B/H" suffix mean in SMB10J33AHE3_B/H?
In SMB10J33AHE3_B/H, "HE3" denotes RoHS-compliant and AEC-Q101 qualified construction, while "_B/H" specifies packaging: "B" indicates 7″ diameter tape-and-reel, and "H" is the preferred package code per Vishay's ordering table (Document 88422, p. 4). This configuration delivers 750 units per reel and is optimized for automated SMT placement in high-reliability production lines using the SMB10J33AHE3_B/H.
How does SMB10J33AHE3_B/H differ from bidirectional TVS diodes like SMB8J33CA?
The SMB10J33AHE3_B/H is unidirectional, meaning it protects only against positive transients on a referenced line (e.g., 33 V rail to ground), with polarity marked by a cathode band. In contrast, SMB8J33CA is bidirectional and symmetrical-suitable for AC lines or data pairs-but offers only 800 W PPPM and different IPPM (15.0 A vs. 18.8 A). The SMB10J33AHE3_B/H is not interchangeable with SMB8J33CA without circuit redesign due to polarity and power rating differences.
What is the thermal resistance of SMB10J33AHE3_B/H, and how does it affect layout?
The SMB10J33AHE3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W and junction-to-lead (RθJL) of 20 °C/W, per Vishay's thermal characteristics table. To maintain TJ ≤ 150 °C under 1000 W surges, PCB layout must use minimum 0.2″ × 0.2″ (5.0 mm × 5.0 mm) copper pads per terminal-as specified in the datasheet-to realize the rated RθJA. Failure to meet this pad area degrades thermal performance and risks premature failure of the SMB10J33AHE3_B/H.
SMB10J33AHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 53.3V
- Current - Peak Pulse (10/1000µs):
- 18.8A
- Power - Peak Pulse:
- 1000W (1kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J33AHE3_B/H FAQ
1.How can I place an order for SMB10J33AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J33AHE3_B/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 SMB10J33AHE3_B/H reliable?
The price and inventory of SMB10J33AHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J33AHE3_B/H is usually 5 days.
3.What payment methods are accepted for SMB10J33AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J33AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J33AHE3_B/H?
SMB10J33AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J33AHE3_B/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 SMB10J33AHE3_B/H?
For technical support, including SMB10J33AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J33AHE3_B/H requirements.
6.How does Aetrix verify that SMB10J33AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMB10J33AHE3_B/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 SMB10J33AHE3_B/H meets industry standards.
7.What is the process for return or replacement of SMB10J33AHE3_B/H?
All SMB10J33AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J33AHE3_B/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 SMB10J33AHE3_B/H part is unused and in its original packaging.
Return procedure for SMB10J33AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J33AHE3_B/H Tags
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