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Vishay General Semiconductor - Diodes Division SMB10J33AHE3/5B
- Part No.:
- SMB10J33AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J33AHE3/5B.pdf
- Description:
- TVS DIODE 33VWM 53.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,669
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Product details
Overview
SMB10J33AHE3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on power and signal lines. It features a 33 V stand-off voltage (VWM), 36.7–40.6 V breakdown voltage (VBR at 1 mA), 53.3 V clamping voltage (VC) at 18.8 A peak pulse current, and 1000 W peak pulse power rating with 10/1000 µs waveform - optimized for automotive-grade ESD and load-dump protection in engine control units and sensor interfaces.
For engineers reviewing the SMB10J33AHE3/5B datasheet, SMB10J33AHE3/5B pinout, SMB10J33AHE3/5B application, or SMB10J33AHE3/5B equivalent, key selection criteria include AEC-Q101 qualification, unidirectional polarity with cathode band marking, low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads per terminal.
Technical Context
This TVS diode operates as a clamping device that transitions from high-impedance to low-impedance state during transients exceeding VWM, limiting voltage across protected circuitry. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while the SMB package provides thermal resistance of 20 °C/W (junction-to-lead) and meets MSL level 1 (260 °C reflow peak).
The SMB10J33AHE3/5B is rated for -55 °C to +150 °C operating junction temperature and supports 100 A non-repetitive forward surge current (IFSM). Its 1.0 µA maximum reverse leakage at VWM minimizes standby power loss in always-on automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (min/max) | 36.7 V / 40.6 V at 1 mA - Confirmed breakdown range ensuring reliable turn-on under transient overvoltage conditions. |
| VC @ IPPM | 53.3 V at 18.8 A - Clamped voltage during 10/1000 µs surge; determines maximum stress on downstream ICs. |
| PPPM | 1000 W - Peak pulse power handling capacity; enables robust protection against ISO 7637-2 Pulse 1/2a/5a surges. |
| IFSM | 100 A - Single half-sine surge current rating (8.3 ms); supports load-dump immunity in 12 V automotive systems. |
| TJ max | +150 °C - Maximum junction temperature; allows operation in under-hood environments without derating. |
| AEC-Q101 | Qualified - Validated for automotive reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by color band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration. |
| Cathode | Reverse-biased terminal | Marked with band; connected to protected line (e.g., battery rail or signal input) to clamp positive transients. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
| AEC-Q101 qualification | Validates suitability for automotive applications including powertrain, body electronics, and ADAS sensor interfaces. |
| Low profile SMB package | Enables high-density PCB layouts and compatibility with standard pick-and-place equipment for automated assembly. |
| MSL Level 1 rating | Permits exposure to moisture-free storage and single-reflow processing at 260 °C peak without popcorn failure. |
| 1000 W peak pulse power | Provides immunity to severe transients such as ISO 16750-2 load dump (up to 35 V for 400 ms) when used with appropriate series impedance. |
Applications
| Engine Control Unit (ECU) Power Input | Automotive Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V supply rail of engine control unit against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between battery rail and DC/DC converter input. Use Value: Limits transient voltage to ≤53.3 V during 1000 W surges, preventing damage to LDOs and microcontrollers rated for 40 V absolute maximum. | Use Scenario: Safeguarding analog output lines of pressure or temperature sensors exposed to cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS on sensor output trace, positioned near connector interface. Use Value: Sub-1 ns response clamps ESD pulses (IEC 61000-4-2 ±15 kV contact) before reaching precision ADC front-end, preserving measurement integrity. |
| Body Control Module (BCM) LIN Bus Line | Infotainment System USB Power Rail |
Use Scenario: Protecting LIN transceiver pins from induced transients during door actuator switching. IC Role / Device Role / Timing Role: Unidirectional TVS tied between LIN data line and ground, with cathode to data line. Use Value: Maintains signal integrity with <1.0 µA leakage at 12 V, avoiding bus pull-down while clamping spikes up to 53.3 V. | Use Scenario: Guarding 5 V USB VBUS line in head unit against hot-plug surges and backfeed transients. IC Role / Device Role / Timing Role: TVS placed upstream of USB port fuse and load switch, cathode to VBUS. Use Value: Withstands repeated 10/1000 µs surges up to 1000 W without degradation, extending system lifetime beyond 10,000 insertion cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33AHE3/5B | Same VWM/VC specs but rated for 600 W PPPM; lower IPPM (12.3 A) and higher RθJA (90 °C/W). | Not suitable for ISO 7637-2 Pulse 5a (load dump); limited to lower-energy transients like ESD or switching noise. | Select SMB10J33AHE3/5B where full 1000 W surge immunity is required; choose SMBJ33AHE3/5B only if board space or cost constraints preclude larger footprint. |
| SMCJ33AHE3/5B | Same electrical specs but in larger SMC (DO-214AB) package; higher thermal mass and lower RθJL (15 °C/W). | Better sustained surge handling due to improved heat dissipation; requires larger PCB pad area (7.1 mm × 6.2 mm vs. 5.0 mm × 5.0 mm). | Prefer SMB10J33AHE3/5B for space-constrained automotive modules; use SMCJ33AHE3/5B when thermal performance under repetitive surges is critical. |
Compared with SMBJ33AHE3/5B and SMCJ33AHE3/5B, the SMB10J33AHE3/5B uniquely balances 1000 W surge capability with SMB footprint - enabling AEC-Q101-compliant protection in tight-layout ECUs without sacrificing clamping performance or requiring layout redesign.
Availability
SMB10J33AHE3/5B is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power supply protection requiring stable component supply and AEC-Q101 compliance.
Supply support for SMB10J33AHE3/5B 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability and automotive qualification.
The SMB10JxxAHE3 series belongs to Vishay's TRANSZORB® high-power TVS platform, engineered specifically for AEC-Q101-compliant transient suppression in harsh automotive environments including powertrain, chassis, and body electronics.
FAQ
What is the clamping voltage of SMB10J33AHE3/5B at its rated peak pulse current?
The SMB10J33AHE3/5B has a maximum clamping voltage (VC) of 53.3 V at 18.8 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The SMB10J33AHE3/5B maintains this clamping performance across its qualified operating temperature range (-55 °C to +150 °C).
Is SMB10J33AHE3/5B suitable for bidirectional transient protection?
No, SMB10J33AHE3/5B is a unidirectional TVS diode, as confirmed by its part number suffix "A" and specification table listing only unidirectional parameters (e.g., IFSM = 100 A). For bidirectional protection, Vishay offers the SMB8J33CAHE3/5B variant with symmetrical breakdown and 800 W PPPM. The SMB10J33AHE3/5B must be oriented with cathode toward the protected line to suppress positive transients only.
Does SMB10J33AHE3/5B meet automotive qualification standards?
Yes, SMB10J33AHE3/5B is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet revision 09-Jan-2024 (Document Number: 88422). This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD), confirming suitability for automotive applications such as engine control, body electronics, and ADAS subsystems.
What is the thermal resistance of SMB10J33AHE3/5B from junction to lead?
The SMB10J33AHE3/5B has a typical thermal resistance from junction to lead (RθJL) of 20 °C/W, per Vishay's thermal characteristics table. This parameter reflects the device's ability to conduct heat from the silicon die to the PCB copper pads via its leads. When mounted on 5.0 mm × 5.0 mm copper pads per terminal, this enables effective thermal management during repetitive surge events without exceeding the +150 °C maximum junction temperature.
How does the SMB10J33AHE3/5B differ from the SMBJ33AHE3/5B in surge handling capability?
The SMB10J33AHE3/5B delivers 1000 W peak pulse power (PPPM) versus 600 W for the SMBJ33AHE3/5B, enabling it to withstand higher-energy transients like ISO 7637-2 Pulse 5a (load dump). Its higher IPPM (18.8 A vs. 12.3 A) and lower clamping voltage slope result from optimized chip geometry and packaging. Both share the same SMB footprint and AEC-Q101 qualification, but SMB10J33AHE3/5B is specified for more demanding automotive surge environments.
SMB10J33AHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J33AHE3/5B FAQ
1.How can I place an order for SMB10J33AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J33AHE3/5B 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 SMB10J33AHE3/5B reliable?
The price and inventory of SMB10J33AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J33AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMB10J33AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J33AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J33AHE3/5B?
SMB10J33AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J33AHE3/5B 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 SMB10J33AHE3/5B?
For technical support, including SMB10J33AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J33AHE3/5B requirements.
6.How does Aetrix verify that SMB10J33AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMB10J33AHE3/5B 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 SMB10J33AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMB10J33AHE3/5B?
All SMB10J33AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J33AHE3/5B, 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 SMB10J33AHE3/5B part is unused and in its original packaging.
Return procedure for SMB10J33AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J33AHE3/5B Tags
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