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Vishay General Semiconductor - Diodes Division SMB10J33AHE3_A/H
- Part No.:
- SMB10J33AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J33AHE3_A/H.pdf
- Description:
- TVS DIODE 33VWM 53.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,359
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Product details
Overview
SMB10J33AHE3_A/H 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 (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive ECUs, industrial sensor interfaces, and power supply input stages.
For engineers reviewing the SMB10J33AHE3_A/H datasheet, SMB10J33AHE3_A/H pinout, SMB10J33AHE3_A/H application, or SMB10J33AHE3_A/H 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 device operates as a silicon avalanche diode, leveraging glass-passivated junction technology to achieve sub-nanosecond response time and stable clamping under repetitive transients. Its thermal resistance (RθJA = 72 °C/W) and junction temperature rating (TJ max = 150 °C) support sustained operation in enclosed automotive and industrial enclosures.
The SMB10J33AHE3_A/H is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine) and exhibits ≤1.0 µA reverse leakage at VWM - enabling reliable hold-off in 24–36 V systems while maintaining low standby power loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 33 V - blocks normal operating voltage up to 33 V without conduction, suitable for 24 V nominal bus protection. |
| VBR (Breakdown Voltage) | 36.7–40.6 V at 1 mA - defines precise avalanche initiation threshold for predictable clamping onset. |
| VC (Clamping Voltage) | 53.3 V at 18.8 A IPPM - limits downstream voltage stress during 10/1000 µs surge, protecting 3.3 V/5 V logic and MOSFET gates. |
| PPPM (Peak Pulse Power) | 1000 W - sustains high-energy transients per ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4. |
| IFSM (Surge Current) | 100 A (8.3 ms half-sine) - withstands inrush and load-dump events common in 12 V/24 V vehicle electrical systems. |
| Polarity & Package | Unidirectional, SMB (DO-214AA) - surface-mount, MSL Level 1, matte tin leads compliant with J-STD-002/JESD 22-B102. |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per AEC standard. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with UL 94 V-0 flammability rating; cathode indicated by color band on one end; terminals are matte tin-plated for solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to system ground or return path; forms current path during reverse-biased clamping event. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., battery rail or signal trace); avalanche conduction initiates here during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics - supports deployment in engine control, ADAS sensors, and body modules without additional qualification. |
| Glass-passivated junction | Ensures stable VBR over lifetime and temperature, minimizing parameter drift in harsh environments (−55 °C to +150 °C). |
| Low-profile SMB package | Enables high-density PCB layouts and compatibility with standard pick-and-place equipment (0.220" × 0.130" footprint). |
| 1000 W peak pulse power | Provides robust immunity against ISO 7637-2 load dump (up to 120 V, 100 ms) and coupled lightning surges in industrial 24 V systems. |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak - eliminates baking requirements and simplifies manufacturing flow. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply inputs of engine control units (ECUs) against load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and DC-DC converter input. Use Value: Clamps surge voltage to ≤53.3 V within nanoseconds, preventing damage to downstream regulators and microcontrollers. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) of pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 µA) TVS mounted directly at connector interface. Use Value: Maintains signal integrity during ESD events (IEC 61000-4-2 ±8 kV contact) without affecting loop accuracy. |
| Telecom DC Power Input Protection | Consumer Device USB Power Path Protection |
|
Use Scenario: Safeguarding −48 V telecom rectifier outputs against induced surges from nearby AC mains switching. IC Role / Device Role / Timing Role: Primary surge clamp on input side of isolated DC-DC module. Use Value: Withstands 1000 W pulses while limiting voltage overshoot to <10% above nominal rail, preserving isolation barrier integrity. |
Use Scenario: Adding secondary-level surge protection on 5 V USB VBUS line in portable medical monitors and smart home hubs. IC Role / Device Role / Timing Role: Secondary TVS after primary fuse and filter, positioned before USB controller IC. Use Value: Fast clamping (sub-ns) prevents latch-up in USB PHYs during hot-plug ESD, meeting USB-IF compliance requirements. |
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 VWM (33 V), identical SMB package, but lower PPPM (600 W) and IPPM (12.3 A). | Rated for lighter-duty transients (e.g., IEC 61000-4-2 only); insufficient for ISO 7637-2 load dump. | Select when cost sensitivity outweighs surge margin, and system-level testing confirms 600 W adequacy. |
| 1.5SMC33AH | Same VWM and VC, but larger SMC (DO-214AB) package (0.285" × 0.235"), higher RθJA (50 °C/W), and same 1000 W rating. | Requires more PCB area; better thermal dissipation in high-ambient environments (>85 °C). | Choose when board space permits and enhanced thermal performance is prioritized over miniaturization. |
Compared with SMBJ33AHE3_A/H and 1.5SMC33AH, SMB10J33AHE3_A/H delivers optimal balance of high surge capability (1000 W), compact SMB footprint, and AEC-Q101 validation - making it the preferred choice for space-constrained automotive and industrial designs requiring full ISO 7637-2 compliance.
Availability
SMB10J33AHE3_A/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and telecom DC power input protection requiring stable component supply across extended production lifecycles.
Supply support for SMB10J33AHE3_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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMB10J series targets high-power transient suppression in automotive and industrial environments, engineered to meet AEC-Q101 and deliver consistent clamping under extreme surge conditions.
FAQ
What is the maximum clamping voltage of SMB10J33AHE3_A/H at its rated peak pulse current?
The SMB10J33AHE3_A/H has a maximum clamping voltage (VC) of 53.3 V at 18.8 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value ensures downstream components powered from a 24 V or 33 V rail remain within safe operating voltage limits during surge events, and is measured per ANSI/IEEE C62.35 standards.
Is SMB10J33AHE3_A/H qualified for automotive applications?
Yes, SMB10J33AHE3_A/H is AEC-Q101 qualified, as confirmed by Vishay's documentation (Document Number: 88422, Revision: 09-Jan-2024). The "HE3" suffix denotes RoHS-compliant and AEC-Q101 qualified construction, making SMB10J33AHE3_A/H suitable for use in engine control, body electronics, and ADAS subsystems without additional qualification.
What is the reverse leakage current of SMB10J33AHE3_A/H at its stand-off voltage?
At its 33 V stand-off voltage (VWM), SMB10J33AHE3_A/H exhibits a maximum reverse leakage current (ID) of 1.0 µA at TA = 25 °C. This ultra-low leakage preserves system efficiency in always-on circuits and avoids false triggering in high-impedance sensor bias networks.
Can SMB10J33AHE3_A/H be used in bidirectional configurations?
No, SMB10J33AHE3_A/H is a unidirectional TVS diode, as indicated by its part number suffix "A" and cathode band marking. For bidirectional protection at 33 V, the functionally matched part is SMB8J33CAHE3_A/H - which offers 800 W PPPM and symmetric clamping but requires layout revision due to different polarity behavior.
What is the thermal resistance junction-to-ambient for SMB10J33AHE3_A/H?
The typical thermal resistance junction-to-ambient (RθJA) for SMB10J33AHE3_A/H is 72 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard JEDEC test conditions and must be derated above TA = 25 °C using the curve in Figure 2 of the Vishay datasheet (88422).
SMB10J33AHE3_A/H 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:
- 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_A/H FAQ
1.How can I place an order for SMB10J33AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J33AHE3_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 SMB10J33AHE3_A/H reliable?
The price and inventory of SMB10J33AHE3_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 SMB10J33AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMB10J33AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J33AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J33AHE3_A/H?
SMB10J33AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J33AHE3_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 SMB10J33AHE3_A/H?
For technical support, including SMB10J33AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J33AHE3_A/H requirements.
6.How does Aetrix verify that SMB10J33AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMB10J33AHE3_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 SMB10J33AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMB10J33AHE3_A/H?
All SMB10J33AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J33AHE3_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 SMB10J33AHE3_A/H part is unused and in its original packaging.
Return procedure for SMB10J33AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J33AHE3_A/H Tags
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