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Vishay General Semiconductor - Diodes Division SMB10J33AHE3/52
- Part No.:
- SMB10J33AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J33AHE3/52.pdf
- Description:
- TVS DIODE 33VWM 53.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,361
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Product details
Overview
SMB10J33AHE3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on DC power rails 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 - deployed in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMB10J33AHE3/52 datasheet, SMB10J33AHE3/52 pinout, SMB10J33AHE3/52 application, or SMB10J33AHE3/52 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.
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 behavior and low leakage (<1.0 µA at 33 V), while MSL Level 1 moisture sensitivity supports lead-free reflow up to 260 °C peak.
The SMB10J33AHE3/52 delivers 1000 W peak pulse power handling per IEC 61000-4-5 and ANSI/IEEE C62.35 standards, with thermal resistance of 72 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling reliable operation up to +150 °C junction temperature under derated surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - maximum continuous reverse operating voltage before clamping initiates; defines safe DC rail margin for 3.3 V/5 V/12 V/24 V systems. |
| VBR (min/max) | 36.7 V / 40.6 V at 1 mA - tight breakdown window ensures predictable turn-on without premature conduction during normal operation. |
| VC @ IPPM | 53.3 V at 18.8 A - clamping voltage limits downstream IC stress during 10/1000 µs surges; critical for protecting 33 V-rated MOSFETs or CAN transceivers. |
| PPPM | 1000 W - peak pulse power rating confirms robustness against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 surges. |
| IFSM | 100 A - non-repetitive forward surge current rating validates capability to survive 8.3 ms half-sine inductive switch-off events. |
| TJ max | +150 °C - maximum junction temperature enables use in under-hood automotive environments and sealed industrial enclosures. |
| AEC-Q101 | Qualified - certified for automotive-grade reliability including HTOL, TCT, and ESD testing per AEC specification; suffix HE3 denotes qualification. |
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; polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to ground or low-side reference; completes clamping loop when transient exceeds VWM. |
| Cathode | Reverse-biased terminal / protected line connection | Connected to the line being protected (e.g., 33 V supply rail); color band identifies this terminal. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensors - eliminates need for additional qualification testing. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<1.0 µA) over temperature and lifetime, critical for long-term reliability in harsh environments. |
| Low profile SMB package | 0.220" × 0.130" footprint with 0.086" height enables dense PCB layouts and compatibility with standard SMT pick-and-place equipment. |
| MSL Level 1 rating | Permits exposure to ambient humidity without baking prior to reflow; supports lead-free assembly at 260 °C peak temperature without popcorn failure. |
| 1000 W peak pulse power | Handles high-energy transients such as load dump (ISO 7637-2 Pulse 5a) and lightning-induced surges (IEC 61000-4-5) without degradation. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 33 V supply inputs of automotive body control modules (BCM) against load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between 33 V rail and chassis ground to limit voltage excursions during ISO 7637-2 Pulse 5a events. Use Value: Clamps to 53.3 V within nanoseconds, preventing damage to downstream PMICs and microcontrollers rated for ≤40 V absolute maximum. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA or 0–10 V) of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: Bidirectional-capable but used unidirectionally across sensor supply and return paths to absorb ESD and cable discharge events. Use Value: Sub-100 ns response time and <1.0 µA leakage preserve signal integrity and measurement accuracy in precision 24-bit ADC front-ends. |
| Telecom DC Power Input Protection | OBD-II Diagnostic Port Protection |
|
Use Scenario: Shielding 33 V DC input of telecom remote radio units (RRUs) from induced surges on outdoor power feeds. IC Role / Device Role / Timing Role: Primary TVS on input stage, coordinated with upstream fuse and secondary filtering to meet IEC 61000-4-5 Level 4 immunity. Use Value: 1000 W rating and 72 °C/W RθJA enable sustained surge handling without thermal runaway in sealed outdoor enclosures. |
Use Scenario: Hardening OBD-II connector pins (pins 16/VBAT and 4/Chassis GND) against accidental 24 V jump-start transients and ESD. IC Role / Device Role / Timing Role: Unidirectional TVS mounted directly at connector footprint to minimize inductance and maximize clamping effectiveness. Use Value: Cathode-band polarity marking simplifies orientation verification during automated assembly; HE3 suffix guarantees automotive qualification traceability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33AHE3/52 | Same VWM (33 V), identical SMB package, but lower PPPM = 600 W and higher VC = 53.3 V @ 11.3 A. | Not suitable for ISO 7637-2 Pulse 5a or IEC 61000-4-5 Level 4; limited to lower-energy transients in consumer or non-automotive industrial use. | Select SMB10J33AHE3/52 when full 1000 W surge immunity and AEC-Q101 compliance are required. |
| SMCJ33AHE3/52 | Same VWM and VC, but larger SMC (DO-214AB) package with PPPM = 1500 W and RθJA = 40 °C/W. | Requires more PCB area and may not fit space-constrained automotive modules; better suited for high-power telecom or energy infrastructure. | Choose SMB10J33AHE3/52 for space-limited automotive PCBs where 1000 W suffices and MSL Level 1 is mandatory. |
Compared with SMBJ33AHE3/52 and SMCJ33AHE3/52, SMB10J33AHE3/52 uniquely balances 1000 W surge capacity, AEC-Q101 qualification, SMB footprint, and MSL Level 1 - making it optimal for next-generation automotive ECUs requiring compact, qualified, high-power TVS protection.
Availability
SMB10J33AHE3/52 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor nodes, and telecom DC power inputs requiring stable component supply, AEC-Q101 traceability, and high-reliability surge immunity.
Supply support for SMB10J33AHE3/52 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, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SMB10J series was developed to deliver high-power transient suppression in compact surface-mount packages for automotive and industrial applications demanding AEC-Q101 qualification and robust surge immunity.
FAQ
What is the clamping voltage of SMB10J33AHE3/52 and how is it measured?
The SMB10J33AHE3/52 has a maximum clamping voltage (VC) of 53.3 V at 18.8 A peak pulse current, tested with a 10/1000 µs waveform per IEC 61000-4-5. This value represents the upper voltage limit imposed on protected circuitry during surge events and is verified under standardized lab conditions using calibrated surge generators and oscilloscope-based measurement setups.
Is SMB10J33AHE3/52 suitable for bidirectional transient protection?
No - SMB10J33AHE3/52 is a unidirectional TVS diode, identified by its cathode band marking and specified only for unidirectional applications. For bidirectional protection at 33 V, Vishay offers the SMB8J33CAHE3/52 variant, which shares the same package and VWM but provides symmetrical clamping in both polarities.
Does SMB10J33AHE3/52 require derating at elevated ambient temperatures?
Yes - SMB10J33AHE3/52 must be derated above 25 °C ambient per Figure 2 in Vishay document 88422. At 85 °C ambient, its 1000 W peak pulse power rating reduces to approximately 650 W, and at 125 °C, it drops to ~400 W; design margins must account for this thermal derating in enclosed or high-temperature environments.
What does the "HE3" suffix indicate in SMB10J33AHE3/52?
"HE3" denotes RoHS-compliant construction with AEC-Q101 qualification and matte tin plating. It distinguishes this automotive-grade version from commercial variants (e.g., "E3") and confirms compliance with stress tests including high-temperature operating life, temperature cycling, and ESD per AEC specification - essential for automotive Tier 1 suppliers.
Can SMB10J33AHE3/52 be used in parallel to increase surge current handling?
No - SMB10J33AHE3/52 should not be paralleled without external balancing components. Minor VBR mismatches (±3.9 V tolerance) cause uneven current sharing during surges, risking thermal runaway in one device. For higher current needs, select a single higher-rated part like SMCJ33AHE3/52 instead.
SMB10J33AHE3/52 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)
SMB10J33AHE3/52 FAQ
1.How can I place an order for SMB10J33AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J33AHE3/52 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 SMB10J33AHE3/52 reliable?
The price and inventory of SMB10J33AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J33AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMB10J33AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J33AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J33AHE3/52?
SMB10J33AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J33AHE3/52 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 SMB10J33AHE3/52?
For technical support, including SMB10J33AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J33AHE3/52 requirements.
6.How does Aetrix verify that SMB10J33AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMB10J33AHE3/52 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 SMB10J33AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMB10J33AHE3/52?
All SMB10J33AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J33AHE3/52, 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 SMB10J33AHE3/52 part is unused and in its original packaging.
Return procedure for SMB10J33AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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