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Vishay General Semiconductor - Diodes Division SMB10J33A-M3/5B
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- Part No.:
- SMB10J33A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J33A-M3/5B.pdf
- Description:
- TVS DIODE 33VWM 53.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,191
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Product details
Overview
SMB10J33A-M3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on 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, 1000 W peak pulse power (10/1000 µs), 18.8 A peak pulse current (IPPM), and clamps to ≤53.3 V under surge. It is widely used in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMB10J33A-M3/5B datasheet, SMB10J33A-M3/5B pinout, SMB10J33A-M3/5B application, or SMB10J33A-M3/5B equivalent, key selection criteria include clamping voltage vs. protected IC's absolute maximum rating, thermal resistance (RθJA = 72 °C/W), AEC-Q101 qualification status, and halogen-free RoHS compliance per M3 suffix.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: it remains high-impedance below VWM (33 V), avalanches sharply at VBR (min 36.7 V), and limits transient overvoltage to ≤53.3 V at 18.8 A. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 µA at VWM).
Designed for surface-mount automated assembly, it meets J-STD-020 MSL Level 1 (peak reflow 260 °C), supports 100 A non-repetitive forward surge (IFSM), and delivers fast response time (<1 ns) with low incremental surge resistance - critical for protecting MOSFET gates and microcontroller I/O against ESD and load-switching transients.
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 avalanche onset range; ensures reliable triggering above system nominal voltage. |
| VC @ IPPM | ≤53.3 V at 18.8 A - Clamping voltage during 10/1000 µs surge; must be below protected device's absolute max rating. |
| PPPM | 1000 W (10/1000 µs) - Peak transient energy handling capacity; determines survivability of common automotive ISO 7637-2 pulses. |
| RθJA | 72 °C/W - Junction-to-ambient thermal resistance on 0.2" × 0.2" copper pads; informs derating above 25 °C ambient. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness. |
| Package | SMB (DO-214AA) - Standardized 2-pin SMD outline with cathode band marking; compatible with IPC-7351B footprint. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic case with matte tin-plated leads. Cathode indicated by color band on one end; anode is unmarked terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink node | Connected to protected line (e.g., +12 V rail); conducts transient energy to ground when clamping. |
| Anode | Reference / return path | Typically tied to system ground or low-impedance return plane; completes shunt path during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free & RoHS-compliant | M3 suffix confirms full halogen-free material set and RoHS compliance - required for EU automotive and industrial shipments. |
| AEC-Q101 qualified | Validated per stress test schedule for automotive electronics - enables use in engine control, body modules, and ADAS power supplies. |
| Low profile SMB package | Max height 1.95 mm - enables compact layout in space-constrained modules such as ECUs and sensor nodes. |
| Glass passivated junction | Ensures stable VBR tolerance, low leakage (<1 µA), and long-term reliability under thermal cycling and humidity exposure. |
| MSL Level 1 rating | Supports standard lead-free reflow profiles up to 260 °C peak without moisture-induced damage. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECU power input against load dump (ISO 7637-2 Pulse 5a) and jump-start surges. IC Role / Device Role / Timing Role: Shunt TVS placed between VIN and GND, upstream of DC/DC converter input. Use Value: Clamps transients to ≤53.3 V, preventing damage to downstream regulators rated for 45 V absolute max input. | Use Scenario: Safeguarding analog output (4–20 mA) or CAN transceiver I/O pins from ESD and inductive kickback in factory automation sensors. IC Role / Device Role / Timing Role: Bidirectional or unidirectional TVS placed across differential pair or single-ended line to chassis ground. Use Value: Sub-1 ns response and 1000 W rating absorb 8 kV contact ESD (IEC 61000-4-2) without degradation. |
| Consumer Power Adapter Output Protection | Telecom DC Feeder Protection |
Use Scenario: Securing 5–24 V outputs of wall adapters and PoE injectors against surge coupling from AC mains or cable ingress. IC Role / Device Role / Timing Role: Unidirectional TVS mounted at adapter output connector, referenced to local ground. Use Value: 33 V VWM allows compatibility with 24 V systems while providing 1000 W surge margin per IEC 61000-4-5 Level 3. | Use Scenario: Protecting -48 V telecom DC feeder lines from lightning-induced surges entering via outdoor cabling. IC Role / Device Role / Timing Role: Unidirectional TVS connected between feeder line and telecom ground plane. Use Value: High IPPM (18.8 A) and low VC enable robust clamping even after repeated 10/1000 µs surges up to 1 kV. |
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-M3/5B | Same VWM (33 V), identical SMB package, but lower PPPM (600 W) and IPPM (12.3 A); no AEC-Q101 qualification. | Not suitable for automotive or high-surge industrial environments requiring 1000 W rating. | Select only for cost-sensitive consumer applications where 600 W surge margin suffices. |
| 1.5SMC33AHE3_A/H | Same VWM and VBR range, higher PPPM (1500 W), DO-214AB (SMC) package - 2.5× larger footprint and 2.5× higher RθJA (120 °C/W). | Requires PCB redesign; better for ultra-high-energy events but less space-efficient and thermally constrained. | Choose when 1500 W rating is mandatory and board area permits larger SMC package. |
Compared with SMBJ33A-M3/5B and 1.5SMC33AHE3_A/H, SMB10J33A-M3/5B uniquely balances 1000 W surge capability, AEC-Q101 qualification, SMB footprint, and halogen-free compliance - making it optimal for space-limited automotive and industrial power rail protection where reliability and regulatory alignment are critical.
Availability
SMB10J33A-M3/5B is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power feeders requiring stable component supply with full traceability and lifecycle management.
Supply support for SMB10J33A-M3/5B 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, efficiency, and application-specific validation.
The SMB10JxxA series belongs to Vishay's TRANSZORB® high-power TVS family, engineered specifically for robust transient suppression in harsh environments including automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and 1000 W surge handling are essential.
FAQ
What is the clamping voltage of SMB10J33A-M3/5B at its rated peak pulse current?
The SMB10J33A-M3/5B clamps to a maximum of 53.3 V when subjected to its rated 18.8 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured at the device terminals and defines the upper voltage limit imposed on the protected circuit during surge events - critical for ensuring compatibility with downstream ICs rated for ≤60 V absolute maximum input.
Is SMB10J33A-M3/5B suitable for automotive applications?
Yes, SMB10J33A-M3/5B is AEC-Q101 qualified and explicitly listed in Vishay's automotive ordering codes (HM3 suffix variant). Its construction - glass-passivated junction, MSL Level 1 reflow compatibility, and validated performance across -55 °C to +150 °C - meets requirements for under-hood and body-control module deployments. The M3 suffix also confirms halogen-free compliance required by major automotive OEMs.
What does the "M3/5B" suffix indicate in SMB10J33A-M3/5B?
The "M3" denotes halogen-free, RoHS-compliant commercial-grade construction; "5B" specifies packaging in 13-inch diameter plastic tape and reel with 3200 units per reel. This format supports high-volume SMT assembly and aligns with IPC-7351B land pattern recommendations for the SMB (DO-214AA) case. The full part number SMB10J33A-M3/5B thus identifies both material compliance and logistics configuration.
How does SMB10J33A-M3/5B differ from SMBJ33A-M3/5B?
SMB10J33A-M3/5B delivers 1000 W peak pulse power (PPPM) and 18.8 A peak pulse current (IPPM), whereas SMBJ33A-M3/5B is rated for only 600 W and 12.3 A. Additionally, SMB10J33A-M3/5B carries AEC-Q101 qualification; SMBJ33A-M3/5B does not. Both share the same SMB package and 33 V stand-off voltage, but SMB10J33A-M3/5B is engineered for higher-energy surge environments like automotive load dump.
What is the thermal resistance of SMB10J33A-M3/5B, and how does it affect layout?
SMB10J33A-M3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's datasheet - underscoring the need for adequate copper area to sustain repetitive surge duty cycles. Reducing pad size increases RθJA and may require derating IPPM above 25 °C ambient.
SMB10J33A-M3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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-M3/5B FAQ
1.How can I place an order for SMB10J33A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J33A-M3/5B 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 SMB10J33A-M3/5B reliable?
The price and inventory of SMB10J33A-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J33A-M3/5B is usually 5 days.
3.What payment methods are accepted for SMB10J33A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J33A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J33A-M3/5B?
SMB10J33A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J33A-M3/5B 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 SMB10J33A-M3/5B?
For technical support, including SMB10J33A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J33A-M3/5B requirements.
6.How does Aetrix verify that SMB10J33A-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMB10J33A-M3/5B 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 SMB10J33A-M3/5B meets industry standards.
7.What is the process for return or replacement of SMB10J33A-M3/5B?
All SMB10J33A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J33A-M3/5B, 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 SMB10J33A-M3/5B part is unused and in its original packaging.
Return procedure for SMB10J33A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J33A-M3/5B Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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