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Vishay General Semiconductor - Diodes Division SMBJ5.0CAHM3_A/H
- Part No.:
- SMBJ5.0CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ5.0CAHM3_A/H.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,782
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Product details
Overview
SMBJ5.0CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping ESD and surge transients on signal/power lines. It features 5.0 V stand-off voltage (VWM), 6.4–7.25 V breakdown range (VBR), 600 W peak pulse power (10/1000 µs), <12.0 V clamping voltage at 65.2 A, and operates from –55 °C to +150 °C - deployed in sensor interface protection for industrial PLC I/O modules.
For engineers reviewing the SMBJ5.0CAHM3_A/H datasheet, SMBJ5.0CAHM3_A/H pinout, SMBJ5.0CAHM3_A/H application, or SMBJ5.0CAHM3_A/H equivalent, this page delivers verified electrical specs, bidirectional clamping behavior, thermal derating curves, AEC-Q101 qualification status, and direct replacement guidance for automotive-grade transient suppression design.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR, IPPM, and VC ratings in forward and reverse directions. Its glass-passivated junction ensures stable leakage (<800 µA at VWM) and fast response (<1 ns), while MSL Level 1 moisture sensitivity supports lead-free reflow up to 260 °C peak.
The device complies with ANSI/IEEE C62.35 surge standards and achieves UL 497B recognition (QVGQ2, E136766). Its 20 °C/W junction-to-lead thermal resistance enables effective heat dissipation during repetitive 10/1000 µs pulses at 0.01% duty cycle, with derating starting above 25 °C ambient per Fig. 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse voltage before significant leakage; sets operating margin below system supply rails. |
| VBR (min/max) | 6.4 V / 7.25 V - Breakdown initiates within this band at 10 mA test current; defines clamping onset threshold. |
| VC @ IPPM | 9.2 V - Clamped voltage at 65.2 A peak pulse; determines maximum stress imposed on protected ICs. |
| PPPM | 600 W - Peak surge power handling (10/1000 µs waveform); validates immunity to IEC 61000-4-5 Level 4 surges. |
| IPPM | 65.2 A - Maximum non-repetitive surge current; correlates directly with VC and PCB trace robustness. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive or high-ambient industrial environments. |
| Package | SMB (DO-214AA) - 0.205" × 0.130" footprint; compatible with automated SMT placement and IPC-7351B land patterns. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminals with matte tin-plated leads solderable per J-STD-002/JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts surge current bidirectionally when voltage exceeds ±VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 600 W peak pulse power | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive electronics. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free assembly processes without baking or special handling. |
| Low clamping ratio (VC/VBR ≈ 1.36) | Minimizes overvoltage stress on downstream components during transient events. |
Applications
| Industrial Sensor Interface | Automotive CAN Bus Protection |
|---|---|
|
Use Scenario: Protecting 4–20 mA current-loop transmitters and analog sensor outputs in factory automation cabinets exposed to relay switching noise and lightning-induced surges. IC Role / Device Role: Bidirectional TVS placed across differential signal pair (e.g., RS-485 A/B) or between signal and ground. Use Value: Limits induced transients to ≤9.2 V, preventing latch-up or damage to precision ADCs and isolators operating at 3.3 V or 5 V rails. |
Use Scenario: Guarding high-speed CAN FD physical layer transceivers (e.g., TJA1044) against load dump and ISO 7637-2 pulse 1/2/5a in vehicle ECUs. IC Role / Device Role: Placed across CAN_H/CAN_L differential pair and/or each line to chassis ground. Use Value: Withstands 65.2 A surge current while clamping differential voltage to <18.4 V - preserving bus integrity and meeting OEM EMC specifications. |
| Consumer USB Port ESD Protection | Telecom DSL Line Surge Suppression |
|
Use Scenario: Safeguarding USB 2.0 D+/D− lines in set-top boxes and smart displays against human-body-model (HBM) ESD events up to ±15 kV. IC Role / Device Role: Low-capacitance TVS mounted directly at connector entry point, before USB transceiver IC. Use Value: Sub-1 ns response time diverts >90% of ESD energy before it reaches the PHY, with <0.5 pF junction capacitance minimizing signal distortion. |
Use Scenario: Front-end protection of ADSL/VDSL line drivers and SLIC circuits in residential gateways subjected to lightning-induced longitudinal surges on twisted-pair copper lines. IC Role / Device Role: Paired bidirectional TVS devices across tip/ring and tip/ground, rated for 600 W unidirectional surge capability. Use Value: Maintains <5.0 V leakage at 25 °C, ensuring minimal impact on line impedance and DC bias stability during normal operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0CAHE3_A/H | RoHS-compliant, commercial-grade (non-AEC-Q101); same VWM, VBR, PPPM, and package. | Approved for industrial/commercial use only; not validated for automotive temperature cycling or humidity testing. | Select when AEC-Q101 qualification is unnecessary and cost optimization is prioritized. |
| SMAJ5.0CAHM3_A/H | Lower peak pulse power (400 W vs. 600 W); SMA (DO-214AC) package with smaller 0.165" × 0.130" footprint. | Insufficient for IEC 61000-4-5 Level 4; suitable only for lower-energy ESD or secondary protection stages. | Choose only if board space is constrained and surge threat level is limited to HBM/IEC 61000-4-2. |
Compared with SMBJ5.0CAHE3_A/H, the SMBJ5.0CAHM3_A/H adds AEC-Q101 qualification for automotive reliability; versus SMAJ5.0CAHM3_A/H, it delivers 50% higher surge power in a slightly larger but thermally superior SMB package - critical for primary front-end protection in harsh environments.
Availability
SMBJ5.0CAHM3_A/H is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive CAN bus nodes, consumer USB port protection, and telecom DSL line protection requiring stable component supply and long-term lifecycle support.
Supply support for SMBJ5.0CAHM3_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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The SMBJ series targets high-energy transient suppression in automotive, industrial, and communications systems - engineered for robust clamping, low leakage, and AEC-Q101 compliance where failure is not an option.
FAQ
What does the "HM3" suffix indicate in SMBJ5.0CAHM3_A/H?
The HM3 suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It confirms the SMBJ5.0CAHM3_A/H meets automotive reliability standards including temperature cycling, humidity testing, and mechanical shock - unlike commercial-grade variants such as SMBJ5.0CAHE3_A/H.
Is SMBJ5.0CAHM3_A/H suitable for protecting a 3.3 V logic interface?
Yes - the SMBJ5.0CAHM3_A/H has a 5.0 V stand-off voltage (VWM) and clamps at 9.2 V, providing safe margin above 3.3 V rail while suppressing transients that exceed the IC's absolute maximum rating. Its low leakage (<800 µA) avoids loading the signal line during normal operation.
How does SMBJ5.0CAHM3_A/H differ from unidirectional SMBJ5.0AHM3_A/H?
The SMBJ5.0CAHM3_A/H is bidirectional with symmetrical clamping in both polarities, making it ideal for AC-coupled or floating lines like CAN bus or RS-485. The unidirectional SMBJ5.0AHM3_A/H has a cathode band and only clamps in reverse bias - unsuitable for differential or bipolar signal protection without additional circuitry.
What is the maximum surge current SMBJ5.0CAHM3_A/H can handle?
The SMBJ5.0CAHM3_A/H handles up to 65.2 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is derived from its 600 W peak pulse power rating and 9.2 V clamping voltage (P = V × I), and is validated per Fig. 1 and Table 1 in the Vishay datasheet 88392.
Does SMBJ5.0CAHM3_A/H require heatsinking in typical PCB layouts?
No external heatsink is required - the SMBJ5.0CAHM3_A/H relies on PCB copper pads (minimum 0.2" × 0.2" per terminal) for thermal dissipation. Its RθJA of 100 °C/W and RθJL of 20 °C/W ensure safe operation under single-pulse conditions; continuous power dissipation is limited to 5.0 W at 50 °C ambient.
SMBJ5.0CAHM3_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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 65.2A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ5.0CAHM3_A/H FAQ
1.How can I place an order for SMBJ5.0CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ5.0CAHM3_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 SMBJ5.0CAHM3_A/H reliable?
The price and inventory of SMBJ5.0CAHM3_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 SMBJ5.0CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ5.0CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ5.0CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ5.0CAHM3_A/H?
SMBJ5.0CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ5.0CAHM3_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 SMBJ5.0CAHM3_A/H?
For technical support, including SMBJ5.0CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ5.0CAHM3_A/H requirements.
6.How does Aetrix verify that SMBJ5.0CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ5.0CAHM3_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 SMBJ5.0CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ5.0CAHM3_A/H?
All SMBJ5.0CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ5.0CAHM3_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 SMBJ5.0CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMBJ5.0CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ5.0CAHM3_A/H Tags
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