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Vishay General Semiconductor - Diodes Division SMB10J22HE3/5B
- Part No.:
- SMB10J22HE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J22HE3/5B.pdf
- Description:
- TVS DIODE 22VWM 39.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,704
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Product details
Overview
SMB10J22HE3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy surge protection on power and signal lines. It features a 22 V standoff voltage (VWM), 24.4–26.9 V breakdown voltage (VBR), 35.5 V clamping voltage (VC) at 28.2 A peak pulse current (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform. It is AEC-Q101 qualified and used to protect automotive sensor interfaces and DC power rails against ESD and load dump transients.
For engineers reviewing the SMB10J22HE3/5B datasheet, SMB10J22HE3/5B pinout, SMB10J22HE3/5B application, or SMB10J22HE3/5B equivalent, key selection criteria include clamping performance under 10/1000 µs surges, AEC-Q101 qualification status, thermal resistance (RθJA = 72 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamping device in parallel with protected circuitry, entering avalanche conduction when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1 ns), critical for suppressing ESD (IEC 61000-4-2) and ISO 7637-2 load-dump transients.
The SMB10J22HE3/5B is rated for 150 °C maximum junction temperature and exhibits low incremental surge resistance, enabling effective energy diversion without thermal runaway. Its DO-214AA package supports surface-mount reflow per J-STD-020 MSL Level 1 (peak 260 °C), with matte tin-plated leads meeting JESD 22-B102 solderability and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 24 V automotive systems. |
| VBR (min/max) | 24.4 V / 26.9 V - Breakdown occurs within this range at 1 mA test current; ensures reliable triggering above system nominal voltage. |
| VC @ IPPM | 35.5 V - Clamped voltage at 28.2 A peak pulse current; determines maximum stress imposed on downstream ICs during surge events. |
| PPPM (10/1000 µs) | 1000 W - Peak pulse power handling capability; enables protection against high-energy transients like ISO 7637-2 Pulse 5a (load dump). |
| ID @ VWM | ≤1.0 µA - Reverse leakage at standoff voltage; minimizes standby power loss and avoids false triggering in low-current sensor circuits. |
| TJ max. | 150 °C - Maximum junction temperature rating; supports operation in under-hood automotive environments with sustained thermal stress. |
| RθJA | 72 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs PCB thermal design for sustained surge duty cycles. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, unidirectional configuration with cathode band marking on one end. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated for lead-free reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage rail; forms return path during avalanche conduction. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 24 V supply or CAN_H); carries full surge current into anode during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock - required for engine control, ADAS, and body electronics. |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage over lifetime; eliminates risk of junction degradation under repeated surge stress. |
| MSL Level 1 rating | Enables direct placement on PCB without baking; compatible with standard SMT reflow profiles up to 260 °C peak. |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage exposure to protected ICs - critical for safeguarding 3.3 V or 5 V microcontrollers interfacing with 24 V sensors. |
| Uni-directional polarity | Provides asymmetric protection ideal for DC power rails and single-ended signal lines where reverse conduction must be blocked. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply lines in engine control units (ECUs) against ISO 7637-2 load dump transients up to 60 V. IC Role / Device Role / Timing Role: Parallel-connected clamping device that diverts surge current away from voltage regulators and MCU power inputs. Use Value: Limits voltage seen by downstream LDOs and microcontrollers to ≤35.5 V, preventing latch-up or permanent damage during 1000 W transient events. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) in industrial pressure transmitters exposed to field wiring surges. IC Role / Device Role / Timing Role: Fast-acting shunt protector placed at connector entry point to clamp induced transients before reaching op-amp signal conditioning stages. Use Value: Maintains signal integrity by clamping sub-100 ns ESD events to <36 V while adding <1.0 µA leakage - no impact on loop accuracy or zero-point calibration. |
| Automotive CAN Bus Node Protection | DC-DC Converter Input Stage Protection |
Use Scenario: Secondary-level surge suppression on CAN_H/CAN_L lines in gateway modules subjected to coupled transients from adjacent high-power circuits. IC Role / Device Role / Timing Role: Unidirectional TVS placed between CAN_H and ground to absorb common-mode surges without disrupting differential signaling. Use Value: Clamps 28.2 A surges to 35.5 V within <1 ns, preserving CAN bit timing and preventing bus-off errors during EMC testing (ISO 11898-2). |
Use Scenario: Input-side protection for 24 V–5 V buck converters in telematics units exposed to battery line transients during cold-crank or jump-start conditions. IC Role / Device Role / Timing Role: Front-end shunt limiter that absorbs energy before it reaches the converter's MOSFET and controller IC. Use Value: Withstands 1000 W pulses without degradation, extending converter lifetime and eliminating need for upstream fusing or active crowbar circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22AHE3/5B | Same VWM (22 V), identical DO-214AA package and AEC-Q101 qualification, but lower PPPM (600 W) and higher VC (37.5 V at 23.3 A). | Less robust for high-energy load dump; suitable only for lower-risk 12 V systems or secondary protection layers. | Select SMB10J22HE3/5B when 1000 W surge immunity and tighter clamping (35.5 V vs. 37.5 V) are required for 24 V automotive primary protection. |
| 1.5SMC22AH | Same VWM and unidirectional function, but larger DO-214AB (SMC) package (7.11 mm × 6.22 mm), higher RθJA (50 °C/W), and non-AEC-Q101 commercial grade. | Larger footprint and no automotive qualification; limited to industrial or consumer applications with relaxed reliability requirements. | Choose SMB10J22HE3/5B for space-constrained automotive PCBs requiring AEC-Q101 compliance and superior power density (1000 W in SMB vs. 1500 W in SMC with worse thermal efficiency). |
Compared with SMBJ22AHE3/5B and 1.5SMC22AH, SMB10J22HE3/5B delivers highest power density (1000 W in DO-214AA), lowest clamping voltage, and certified automotive qualification - making it the optimal choice for primary surge protection in compact, safety-critical 24 V systems.
Availability
SMB10J22HE3/5B is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor transmitters, CAN bus nodes, and DC-DC converter input stages requiring stable component supply across extended production lifecycles.
Supply support for SMB10J22HE3/5B 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SMB10Jxx series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density, AEC-Q101-compliant transient suppression in harsh automotive and industrial environments.
FAQ
What is the clamping voltage of SMB10J22HE3/5B at its rated peak pulse current?
The SMB10J22HE3/5B has a maximum clamping voltage (VC) of 35.5 V at 28.2 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per ANSI/IEEE C62.35 standards and defines the upper voltage limit imposed on protected circuitry during surge events. The SMB10J22HE3/5B maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C), ensuring consistent protection in under-hood automotive applications.
Is SMB10J22HE3/5B suitable for protecting CAN bus lines?
Yes, SMB10J22HE3/5B is commonly deployed for CAN bus node protection, especially on CAN_H lines in automotive gateways and body control modules. Its 22 V standoff voltage aligns with typical 24 V CAN transceiver supply rails, and its 35.5 V clamping voltage prevents bus-off errors during ISO 11898-2-compliant EMC testing. As a unidirectional device, SMB10J22HE3/5B blocks reverse conduction while providing fast (<1 ns) response to positive-going transients - preserving differential signal integrity without loading the CAN_L line.
Does SMB10J22HE3/5B meet automotive qualification standards?
Yes, SMB10J22HE3/5B is explicitly AEC-Q101 qualified, as confirmed in Vishay document 88422 (Revision 12-Nov-12). This qualification covers stress tests including high-temperature operating life, temperature cycling, humidity bias, and mechanical shock - validating its suitability for engine compartment, chassis, and powertrain applications. The "HE3" suffix denotes AEC-Q101 compliance, distinguishing it from commercial-grade "E3" variants.
What is the thermal resistance of SMB10J22HE3/5B, and how does it affect layout?
SMB10J22HE3/5B 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 standard FR-4 PCB construction and dictates minimum copper area needed to sustain repetitive surge duty cycles. For designs expecting frequent transients, increasing pad size or adding thermal vias reduces effective RθJA and prevents junction temperature from exceeding 150 °C - a critical constraint verified in Vishay's derating curves (Figure 2).
How does SMB10J22HE3/5B differ from SMBJ22AHE3/5B?
SMB10J22HE3/5B delivers 1000 W peak pulse power (PPPM) versus 600 W for SMBJ22AHE3/5B, with a lower clamping voltage (35.5 V vs. 37.5 V at rated IPPM) and identical AEC-Q101 qualification and DO-214AA package. The SMB10J22HE3/5B achieves higher power density through optimized chip construction and thermal design, making it preferred for primary protection in 24 V automotive systems where load dump energy exceeds 600 W. Both share the same marking code "1BX" and VWM (22 V), ensuring drop-in replacement feasibility in many layouts.
SMB10J22HE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 39.4V
- Current - Peak Pulse (10/1000µs):
- 25.4A
- 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)
SMB10J22HE3/5B FAQ
1.How can I place an order for SMB10J22HE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J22HE3/5B 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 SMB10J22HE3/5B reliable?
The price and inventory of SMB10J22HE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J22HE3/5B is usually 5 days.
3.What payment methods are accepted for SMB10J22HE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J22HE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J22HE3/5B?
SMB10J22HE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J22HE3/5B 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 SMB10J22HE3/5B?
For technical support, including SMB10J22HE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J22HE3/5B requirements.
6.How does Aetrix verify that SMB10J22HE3/5B is sourced from the original manufacturer or authorized distributors?
All SMB10J22HE3/5B 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 SMB10J22HE3/5B meets industry standards.
7.What is the process for return or replacement of SMB10J22HE3/5B?
All SMB10J22HE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J22HE3/5B, 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 SMB10J22HE3/5B part is unused and in its original packaging.
Return procedure for SMB10J22HE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J22HE3/5B Tags
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