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Vishay General Semiconductor - Diodes Division SMB10J20A-M3/52
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- Part No.:
- SMB10J20A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J20A-M3/52.pdf
- Description:
- TVS DIODE 20VWM 32.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,261
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Product details
Overview
SMB10J20A-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 20 V stand-off voltage (VWM), 22.2–24.5 V breakdown voltage (VBR) at 1 mA, 32.4 V clamping voltage (VC) at 30.9 A peak pulse current (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform.
For engineers reviewing the SMB10J20A-M3/52 datasheet, SMB10J20A-M3/52 pinout, SMB10J20A-M3/52 application, or SMB10J20A-M3/52 equivalent, this device is selected for automotive-grade overvoltage protection where AEC-Q101 qualification, low clamping ratio, and halogen-free RoHS compliance are required - especially in 24 V system interfaces, sensor I/O protection, and MOSFET gate drive circuits.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below VWM (20 V), breaks down sharply at VBR (min 22.2 V), and limits transient voltages to ≤32.4 V during 30.9 A surges. Its glass-passivated junction ensures stable leakage (<1 µA at VWM) and fast response time (<1 ns).
Thermally, it sustains operation up to TJ = 150 °C with RθJA = 72 °C/W and RθJL = 20 °C/W, and is rated for 100 A non-repetitive forward surge (IFSM). The M3 suffix confirms halogen-free, RoHS-compliant construction meeting JESD201 Class 2 whisker resistance and MSL Level 1 reflow compatibility (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin for 24 V systems. |
| VBR (min/max) | 22.2 V / 24.5 V at IT = 1 mA - Tight breakdown window ensures predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 32.4 V at 30.9 A (10/1000 µs) - Clamping voltage directly limits stress on downstream ICs like microcontrollers or transceivers. |
| PPPM | 1000 W - Peak surge energy handling capacity under standardized lightning/surge test conditions. |
| ID @ VWM | <1 µA - Ultra-low leakage preserves battery life and avoids false triggering in high-impedance sensor paths. |
| TJ max. | 150 °C - Enables reliable operation in under-hood automotive environments and industrial enclosures. |
| Package | SMB (DO-214AA) - Surface-mount footprint (5.21 mm × 4.06 mm) compatible with automated placement and IPC-7351B land patterns. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; cathode indicated by color band on one end. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per Vishay recommended layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or return path; carries full surge current during clamping event. |
| Cathode | Protected line input | Connected to protected circuit node (e.g., 24 V rail or sensor output); voltage clamped relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| Halogen-free & RoHS-compliant (M3) | Meets global environmental regulations without compromising thermal or electrical performance. |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure. |
| Low incremental surge resistance | Enables tighter VC/VBR ratio (1.45×) for superior protection margin versus competing 20 V TVS devices. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow without preconditioning or special handling. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply inputs in automotive ECUs against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt clamping element placed between battery rail and local regulator input. Use Value: Limits transient excursions to ≤32.4 V, preventing damage to 36 V-rated LDOs and ensuring system reset integrity. |
Use Scenario: Safeguarding analog outputs of pressure or temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS placed across sensor output and ground to absorb ESD and inductive kickback. Use Value: Sub-1 µA leakage avoids signal offset errors; 30.9 A IPPM handles relay coil de-energization spikes without degradation. |
| DC Motor Driver Gate Protection | Telecom Line Card Surge Suppression |
|
Use Scenario: Shielding N-channel MOSFET gate drivers from Miller-induced voltage overshoot during high-speed switching. IC Role / Device Role / Timing Role: Low-capacitance TVS connected between gate and source to clamp dv/dt-induced transients. Use Value: Fast <1 ns response captures sub-microsecond gate spikes; 20 V VWM aligns with typical 15–18 V gate drive rails. |
Use Scenario: Front-end protection on 48 V PoE-powered Ethernet line cards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary shunt protector on DC input bus prior to DC/DC converter stage. Use Value: 1000 W PPPM meets IEC 61000-4-5 Level 4 requirements; SMB package enables dense board layout near connectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20A-M3/52 | Same SMB package, identical VWM (20 V) and VC (32.4 V), but lower PPPM (600 W) and IPPM (18.5 A). | Rated for lighter-duty surge events; not suitable for ISO 7637-2 Pulse 5a load dump testing. | Select SMB10J20A-M3/52 when 1000 W surge immunity is mandatory; choose SMBJ20A-M3/52 only for cost-sensitive, low-energy applications. |
| 1.5SMC20AHE3_A/H | Same VWM and VC, but in larger SMC (DO-214AB) package; higher thermal mass yields RθJA = 40 °C/W vs. 72 °C/W. | Better sustained power dissipation, but 50 % larger footprint and incompatible land pattern. | Choose SMB10J20A-M3/52 for space-constrained PCBs; use 1.5SMC20AHE3_A/H only when board area permits and thermal derating is critical. |
Compared with SMBJ20A-M3/52 and 1.5SMC20AHE3_A/H, SMB10J20A-M3/52 uniquely delivers 1000 W surge capability in the compact SMB footprint while maintaining AEC-Q101 qualification - making it optimal for automotive and industrial designs where size, reliability, and surge margin are jointly constrained.
Availability
SMB10J20A-M3/52 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power entry modules requiring stable component supply with halogen-free, AEC-Q101-qualified surge protection.
Supply support for SMB10J20A-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 reliability, automotive qualification, and application-specific performance.
The SMB10JxxA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density transient suppression in harsh-environment applications including automotive, industrial, and communications infrastructure.
FAQ
What is the clamping voltage of SMB10J20A-M3/52 at its rated peak pulse current?
The SMB10J20A-M3/52 has a maximum clamping voltage (VC) of 32.4 V when subjected to its specified peak pulse current (IPPM) of 30.9 A using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and represents the upper voltage limit imposed on protected circuitry during a full-rated surge event. The SMB10J20A-M3/52 maintains this clamping performance across its operational temperature range and after repeated surge exposures, provided derating guidelines in Figure 2 of the datasheet are followed.
Is SMB10J20A-M3/52 suitable for automotive applications?
Yes, SMB10J20A-M3/52 is AEC-Q101 qualified and explicitly listed in Vishay's automotive ordering codes (HM3 suffix denotes halogen-free, RoHS-compliant, and AEC-Q101-qualified variants). It meets requirements for under-hood and cabin electronics, including protection against ISO 7637-2 load dump and ISO 16750-2 supply voltage transients. The SMB10J20A-M3/52 also complies with JESD201 Class 2 whisker resistance and MSL Level 1 reflow, confirming suitability for automotive manufacturing processes.
What does the "M3" suffix indicate in SMB10J20A-M3/52?
The "M3" suffix in SMB10J20A-M3/52 designates halogen-free, RoHS-compliant construction per Vishay's material categorization standard (document 99912), with matte tin-plated leads that meet J-STD-002 and JESD22-B102 solderability requirements. It also confirms compliance with JESD201 Class 2 whisker resistance testing. This distinguishes SMB10J20A-M3/52 from E3-suffix variants (RoHS-compliant but not halogen-free) and HE3/HM3 automotive variants (which include additional AEC-Q101 qualification evidence).
How does SMB10J20A-M3/52 differ from SMBJ20A-M3/52?
SMB10J20A-M3/52 delivers 1000 W peak pulse power (PPPM) and 30.9 A peak pulse current (IPPM), whereas SMBJ20A-M3/52 is rated for only 600 W and 18.5 A under identical 10/1000 µs conditions. Both share the same VWM (20 V), VBR (22.2–24.5 V), and VC (32.4 V), but SMB10J20A-M3/52 achieves higher surge capacity via optimized chip geometry and thermal design. The SMB10J20A-M3/52 is therefore preferred for demanding applications such as automotive load dump protection where higher energy absorption is mandatory.
What is the maximum operating junction temperature for SMB10J20A-M3/52?
The SMB10J20A-M3/52 has a maximum operating junction temperature (TJ max.) of +150 °C, as specified in its Absolute Maximum Ratings table. This rating allows reliable operation in high-temperature environments such as engine compartments, industrial motor drives, and enclosed telecom equipment. Derating of peak pulse power begins above TA = 25 °C per Figure 2 in the datasheet, and thermal design must account for RθJA = 72 °C/W to ensure TJ remains within limit under worst-case ambient and power dissipation conditions.
SMB10J20A-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):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 32.4V
- Current - Peak Pulse (10/1000µs):
- 30.9A
- 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)
SMB10J20A-M3/52 FAQ
1.How can I place an order for SMB10J20A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J20A-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 SMB10J20A-M3/52 reliable?
The price and inventory of SMB10J20A-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 SMB10J20A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMB10J20A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J20A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J20A-M3/52?
SMB10J20A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J20A-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 SMB10J20A-M3/52?
For technical support, including SMB10J20A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J20A-M3/52 requirements.
6.How does Aetrix verify that SMB10J20A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMB10J20A-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 SMB10J20A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMB10J20A-M3/52?
All SMB10J20A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J20A-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 SMB10J20A-M3/52 part is unused and in its original packaging.
Return procedure for SMB10J20A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J20A-M3/52 Tags
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