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Vishay General Semiconductor - Diodes Division SMB10J33A-M3/52
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- Part No.:
- SMB10J33A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J33A-M3/52.pdf
- Description:
- TVS DIODE 33VWM 53.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,848
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Product details
Overview
SMB10J33A-M3/52 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 (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform.
For engineers reviewing the SMB10J33A-M3/52 datasheet, SMB10J33A-M3/52 pinout, SMB10J33A-M3/52 application, or SMB10J33A-M3/52 equivalent, key selection criteria include clamping performance under automotive load-dump transients, thermal resistance (RθJA = 72 °C/W), AEC-Q101 qualification status, and halogen-free RoHS compliance per M3 suffix.
Technical Context
This TVS diode operates as a unidirectional shunt protector, leveraging an avalanche breakdown mechanism to clamp transient overvoltages above its VBR threshold while maintaining low leakage (<1.0 µA at 33 V). Its glass-passivated junction ensures stable parametric behavior across temperature (-55 °C to +150 °C) and long-term reliability under repetitive surge stress.
The device is optimized for surface-mount automated assembly on PCBs with minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, meeting J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance requirements. Polarity is marked by a cathode band on the SMB package body.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 36.7 V / 40.6 V at 1 mA - guaranteed avalanche onset range defining turn-on consistency |
| VC @ IPPM | 53.3 V at 18.8 A - clamped voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 1000 W - peak transient energy absorption capability under standardized waveform |
| RθJA | 72 °C/W - thermal resistance from junction to ambient, critical for power derating above 25 °C |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, matte tin-plated leads, MSL Level 1 compliant. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), cathode band denotes terminal 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 (cathode band side) | Anode connection for unidirectional operation | Connected to protected line; clamps positive transients to ground when referenced to Terminal 2 |
| Terminal 2 (opposite cathode band) | Cathode connection for unidirectional operation | Typically tied to system ground or low-impedance return path; defines conduction direction |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and low parameter drift over lifetime and temperature |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a) |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring zero-failure field reliability |
| Halogen-free & RoHS-compliant (M3) | Meets EU ELV and automotive OEM material restrictions without compromising surge robustness |
| MSL Level 1 rating | Enables standard reflow soldering without pre-baking, reducing manufacturing cost and complexity |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V CAN/LIN bus nodes and microcontroller I/O against load dump (ISO 16750-2) and jump-start surges. IC Role / Device Role / Timing Role: Shunt TVS placed between VCC rail and chassis ground to clamp transients before they reach LDOs or MCU pins. Use Value: Limits peak rail voltage to ≤53.3 V during 1000 W surges, preventing latch-up or gate oxide damage in downstream 3.3 V/5 V logic. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation PLC I/O modules exposed to relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional TVS connected between signal line and local ground to absorb inductive kickback from 24 V solenoid drivers. Use Value: Clamps 18.8 A surge within nanoseconds, preserving ±0.1% measurement accuracy of 16-bit ADC inputs. |
| Telecom DC Power Input Protection | Consumer Device USB Power Path Protection |
Use Scenario: Front-end protection for PoE-powered network switches handling IEEE 802.3bt surges on 57 V DC input rails. IC Role / Device Role / Timing Role: Primary TVS stage before DC-DC converter, absorbing bulk energy before secondary clamping stages. Use Value: Withstands 1000 W pulses without degradation, enabling single-stage protection architecture and reducing BOM count. | Use Scenario: Overvoltage protection on USB-C VBUS lines in portable speakers and docking stations subjected to accidental 20 V adapter misconnection. IC Role / Device Role / Timing Role: Fast-response shunt element between VBUS and GND, triggered before internal USB controller overvoltage lockout activates. Use Value: 53.3 V clamping ensures USB PD PHY and power delivery ICs remain within absolute maximum ratings during fault events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33A-M3/52 | Same VWM (33 V), identical SMB package, but lower PPPM (600 W) and higher VC (59.3 V at 10.3 A) | Less robust for automotive load dump; suitable only for lower-energy industrial transients | Select when cost sensitivity outweighs need for full 1000 W surge margin |
| SMAJ33A-M3 | Same VWM and polarity, but SMA (DO-214AC) package - smaller footprint (4.5 × 2.7 mm), higher RθJA (90 °C/W), lower PPPM (400 W) | Limited to space-constrained consumer electronics; not rated for AEC-Q101 | Choose only for non-automotive, low-power applications where board area is critical |
Compared with SMBJ33A-M3/52 and SMAJ33A-M3, SMB10J33A-M3/52 delivers 67% higher peak power handling and 10% lower clamping voltage in the same footprint, making it the preferred choice for AEC-Q101-compliant 24 V systems requiring robust ISO 16750-2 immunity.
Availability
SMB10J33A-M3/52 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecom power supply designs requiring stable component supply with halogen-free compliance and AEC-Q101 validation.
Supply support for SMB10J33A-M3/52 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, MOSFETs, and protection devices with emphasis on high-reliability and automotive-grade performance.
The SMB10J series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density transient suppression in harsh-environment applications including automotive power distribution, industrial motor drives, and infrastructure power systems.
FAQ
What is the clamping voltage of SMB10J33A-M3/52 at its rated peak pulse current?
The SMB10J33A-M3/52 has a maximum clamping voltage (VC) of 53.3 V when subjected to its specified peak pulse current (IPPM) of 18.8 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and ensures downstream components see limited overvoltage stress during surge events. The SMB10J33A-M3/52 maintains this clamping performance across its full operating temperature range.
Is SMB10J33A-M3/52 qualified for automotive applications?
Yes, SMB10J33A-M3/52 is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias, temperature cycling, and accelerated life testing required for automotive use. Its M3 suffix confirms halogen-free, RoHS-compliant construction meeting automotive material restrictions. The SMB10J33A-M3/52 is commonly deployed in body control modules, infotainment power supplies, and ADAS sensor interfaces.
What is the difference between SMB10J33A-M3/52 and SMBJ33A-M3/52?
SMB10J33A-M3/52 offers 1000 W peak pulse power (PPPM) and 53.3 V clamping voltage, whereas SMBJ33A-M3/52 provides only 600 W PPPM and clamps at 59.3 V. Both share the same SMB package and 33 V stand-off voltage, but the SMB10J33A-M3/52 delivers superior surge robustness due to larger die and lower incremental resistance. The SMB10J33A-M3/52 is preferred for demanding automotive load-dump protection.
Does SMB10J33A-M3/52 have polarity marking, and how is it oriented on the PCB?
Yes, SMB10J33A-M3/52 uses a cathode band to indicate polarity - the banded end corresponds to Terminal 1 (anode for unidirectional operation). When mounted on the PCB, the cathode band must align with the designated anode net (typically the protected line), while Terminal 2 connects to ground or reference potential. Incorrect orientation prevents proper clamping function and may cause catastrophic failure during surge events.
What is the thermal resistance and maximum junction temperature of SMB10J33A-M3/52?
The SMB10J33A-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" copper pads, and a maximum junction temperature (TJ max) of +150 °C. These values define its safe operating area under sustained power dissipation or repeated surges. Derating curves in the Vishay datasheet (Fig. 2) must be applied for ambient temperatures above 25 °C to ensure the SMB10J33A-M3/52 remains within thermal limits.
SMB10J33A-M3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMB10J33A-M3/52 FAQ
1.How can I place an order for SMB10J33A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J33A-M3/52 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 SMB10J33A-M3/52 reliable?
The price and inventory of SMB10J33A-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J33A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMB10J33A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J33A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J33A-M3/52?
SMB10J33A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J33A-M3/52 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 SMB10J33A-M3/52?
For technical support, including SMB10J33A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J33A-M3/52 requirements.
6.How does Aetrix verify that SMB10J33A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMB10J33A-M3/52 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 SMB10J33A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMB10J33A-M3/52?
All SMB10J33A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J33A-M3/52, 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 SMB10J33A-M3/52 part is unused and in its original packaging.
Return procedure for SMB10J33A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J33A-M3/52 Tags
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