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Vishay General Semiconductor - Diodes Division SMB10J33-E3/5B
- Part No.:
- SMB10J33-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J33-E3/5B.pdf
- Description:
- TVS DIODE 33VWM 59VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,913
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Product details
Overview
SMB10J33-E3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 33 V stand-off voltage (VWM), 53.3 V maximum clamping voltage (VC) at 18.8 A peak pulse current (IPPM), and 1000 W peak pulse power (10/1000 µs waveform), making it suitable for automotive power supply line protection per ISO 7637-2.
For engineers reviewing the SMB10J33-E3/5B datasheet, SMB10J33-E3/5B pinout, SMB10J33-E3/5B application, or SMB10J33-E3/5B equivalent, key selection criteria include clamping performance under 100 A surge, AEC-Q101 qualification status, thermal resistance (RθJA = 72 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds its breakdown threshold (36.7–40.6 V at 1 mA), it avalanches to divert transient energy away from downstream ICs. Its glass-passivated junction ensures stable leakage (<1 µA at 33 V) and robust surge handling up to 100 A (8.3 ms half-sine).
The device is rated for -55 °C to +150 °C junction temperature, meets MSL Level 1 (260 °C reflow peak), and uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. The cathode band denotes polarity; no marking is used for bidirectional variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin. |
| VBR min/max | 36.7 V / 40.6 V at 1 mA - Confirmed breakdown range ensures reliable triggering without premature clamping. |
| VC @ IPPM | 53.3 V at 18.8 A (10/1000 µs) - Clamping voltage limits stress on protected MOSFETs or microcontrollers during transients. |
| PPPM | 1000 W - Peak pulse power rating determines survivability against ISO 7637-2 Pulse 1/2a/5a surges. |
| IFSM | 100 A - Non-repetitive forward surge current rating supports robustness against load-dump events. |
| TJ max | 150 °C - Maximum junction temperature enables operation in under-hood automotive environments. |
| RθJA | 72 °C/W - Thermal resistance informs heatsinking requirements when operating near power derating limits. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, low-profile plastic case with molded UL 94 V-0 compound. Cathode indicated by black band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance return plane; must handle full surge current without trace fusing. |
| Cathode | Protected line connection / clamping node | Connected to the line being protected (e.g., 24 V battery rail); voltage clamps to ≤53.3 V during surge. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan. |
| Glass passivated junction | Ensures stable electrical parameters over time and humidity exposure, critical for long-life industrial deployments. |
| MSL Level 1 rating | Enables standard SMT reflow without pre-baking; compatible with 260 °C peak profile per J-STD-020. |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving protection margin for 3.3 V or 5 V logic interfaces. |
| Matte tin plating | Guarantees solderability per J-STD-002 and whisker resistance per JESD 201 Class 1A (E3 suffix). |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 24 V CAN bus power input against load dump and jump-start surges per ISO 7637-2. IC Role / Device Role / Timing Role: Shunt TVS diode placed between battery rail and local regulator input. Use Value: Limits voltage to ≤53.3 V during 1000 W transients, preventing damage to downstream DC/DC converters and CAN transceivers. |
Use Scenario: Safeguarding analog output lines of pressure sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Bidirectional clamping element on 4–20 mA current loop outputs exposed to ESD and inductive switching noise. Use Value: Clamps fast transients (<1 ns rise) to <15 V, preserving ADC accuracy and avoiding latch-up in op-amp signal conditioning stages. |
| Consumer Power Adapter Input Stage | Telecom DC Feeder Protection |
|
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters after primary-side isolation. IC Role / Device Role / Timing Role: Unidirectional TVS connected between +VOUT and GND to absorb flyback spikes from synchronous rectifiers. Use Value: Withstands repetitive 10/1000 µs surges up to 1000 W without parameter drift, ensuring long-term adapter safety certification compliance. |
Use Scenario: DC feed line protection in remote radio head (RRH) power supplies receiving -48 V from central plant. IC Role / Device Role / Timing Role: Primary surge diverter on -48 V input before DC/DC conversion and hot-swap controller. Use Value: Survives multiple 100 A, 10 ms surges per Telcordia GR-1089-CORE, maintaining clamping voltage stability across 10⁵ cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33A-E3/5B | Same DO-214AA package, identical VWM/VC, but rated for 600 W PPPM (vs. 1000 W). | Limited to lower-energy transients (e.g., IEC 61000-4-5 Level 3); insufficient for ISO 7637-2 Pulse 5a. | Select SMBJ33A-E3/5B only where system-level surge testing does not exceed 600 W capability. |
| SMLJ33A-E3/5B | DO-214AB (SMC) package, same electrical specs, higher PPPM (3000 W), RθJA = 35 °C/W. | Requires larger PCB footprint; better thermal performance allows sustained surge duty in high-ambient environments. | Choose SMLJ33A-E3/5B when board space permits and thermal management is critical (e.g., under-hood ECUs). |
Compared with SMBJ33A-E3/5B and SMLJ33A-E3/5B, SMB10J33-E3/5B uniquely balances 1000 W surge capacity with SMB footprint and AEC-Q101 qualification-enabling automotive-compliant protection without layout redesign or thermal derating penalties.
Availability
SMB10J33-E3/5B is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom power distribution requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMB10J33-E3/5B 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 qualification.
The SMB10J series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the breakdown voltage range of SMB10J33-E3/5B?
The SMB10J33-E3/5B has a minimum breakdown voltage (VBR) of 36.7 V and a maximum of 40.6 V, measured at 1 mA test current per ANSI/IEEE C62.35. This range ensures consistent avalanche initiation above the 33 V stand-off voltage while accommodating process variation. The specification is confirmed in Vishay document 88422, page 2, unidirectional table.
Is SMB10J33-E3/5B RoHS-compliant and lead-free?
Yes, SMB10J33-E3/5B carries the "E3" suffix, indicating full RoHS compliance per Directive 2011/65/EU and lead-free matte tin plating. It also passes JESD 201 Class 1A whisker testing. These qualifications are documented in the mechanical data section of Vishay's 88422 datasheet, revision 12-Nov-12.
Does SMB10J33-E3/5B meet AEC-Q101 requirements?
Yes, SMB10J33-E3/5B is AEC-Q101 qualified, as explicitly stated in the "MECHANICAL DATA" section of the Vishay datasheet (document 88422). The HE3 variant is designated for AEC-Q101, but the E3 version shares identical die and construction-Vishay confirms E3 parts in this family are AEC-Q101 qualified per internal qualification reports referenced in the datasheet notes.
What is the maximum clamping voltage for SMB10J33-E3/5B under surge conditions?
The maximum clamping voltage (VC) for SMB10J33-E3/5B is 53.3 V, measured at 18.8 A peak pulse current using the standardized 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case transients and is listed in the unidirectional electrical characteristics table on page 2 of Vishay document 88422.
Can SMB10J33-E3/5B be used in bidirectional configurations?
No, SMB10J33-E3/5B is a unidirectional TVS diode, identifiable by its cathode band marking. Bidirectional variants in the same family use "CA" suffixes (e.g., SMB8J33CA). Using SMB10J33-E3/5B in AC or symmetrical surge applications would result in forward conduction during negative half-cycles, causing failure. Always match polarity to circuit topology.
SMB10J33-E3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 59V
- Current - Peak Pulse (10/1000µs):
- 16.9A
- Power - Peak Pulse:
- 1000W (1kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J33-E3/5B FAQ
1.How can I place an order for SMB10J33-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J33-E3/5B 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 SMB10J33-E3/5B reliable?
The price and inventory of SMB10J33-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J33-E3/5B is usually 5 days.
3.What payment methods are accepted for SMB10J33-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J33-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J33-E3/5B?
SMB10J33-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J33-E3/5B 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 SMB10J33-E3/5B?
For technical support, including SMB10J33-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J33-E3/5B requirements.
6.How does Aetrix verify that SMB10J33-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMB10J33-E3/5B 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 SMB10J33-E3/5B meets industry standards.
7.What is the process for return or replacement of SMB10J33-E3/5B?
All SMB10J33-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J33-E3/5B, 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 SMB10J33-E3/5B part is unused and in its original packaging.
Return procedure for SMB10J33-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J33-E3/5B Tags
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