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Vishay General Semiconductor - Diodes Division SMBJ90CAHM3_A/H
- Part No.:
- SMBJ90CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ90CAHM3_A/H.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,967
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Product details
Overview
SMBJ90CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 90 V stand-off voltage (VWM), 146 V maximum clamping voltage (VC) at 4.1 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect MOSFETs, sensor interfaces, and industrial I/O circuits against ESD and inductive switching surges.
For engineers reviewing the SMBJ90CAHM3_A/H datasheet, SMBJ90CAHM3_A/H pinout, SMBJ90CAHM3_A/H application, or SMBJ90CAHM3_A/H equivalent, key selection criteria include bidirectional surge handling capability, low clamping ratio (VC/VWM = 1.62), AEC-Q101 qualification status, halogen-free RoHS compliance, and compatibility with automated SMT placement on PCBs with 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamping protector with symmetrical breakdown behavior in both directions due to its bidirectional construction. Its glass-passivated junction ensures stable avalanche characteristics and fast response time (<1 ns), while the SMB package supports thermal dissipation up to 5.0 W at TA = 50 °C with RθJA = 100 °C/W.
The SMBJ90CAHM3_A/H meets MSL Level 1 per J-STD-020, with lead finish qualified to JESD 22-B102 and J-STD-002 solderability standards. Its temperature coefficient of breakdown voltage is +0.106 %/°C, enabling predictable performance across -55 °C to +150 °C operating junction range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 72–90 V DC bus or signal lines. |
| VBR min/max | 100 V / 111 V at IT = 1 mA - guaranteed breakdown onset range; ensures reliable triggering above system nominal voltage. |
| VC @ IPPM | 146 V at 4.1 A (10/1000 µs) - clamped voltage seen by protected circuit during worst-case transient; limits stress on downstream ICs. |
| PPPM | 600 W - peak surge power handling capacity; supports repetitive 0.01% duty cycle transients in industrial control environments. |
| ID @ VWM | 1.0 µA - ultra-low leakage at rated stand-off voltage; prevents signal distortion or battery drain in high-impedance sensor paths. |
| TJ max | +150 °C - maximum junction temperature; enables deployment in under-hood automotive or enclosed industrial enclosures. |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with IPC-7351B land patterns. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; polarity-unmarked for bidirectional operation; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry path (direction-agnostic) | One terminal of symmetrical PN junction; accepts surge current from either polarity without polarity dependency. |
| Cathode | Transient current exit path (direction-agnostic) | Second terminal of symmetrical PN junction; completes low-impedance clamp path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating differential lines without polarity concerns. |
| 600 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) on 24–48 V industrial buses with margin. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain and body electronics applications requiring zero defect reliability. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC JS709C; supports green manufacturing and end-of-life recycling. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life before reflow; eliminates bake requirements and simplifies SMT line logistics. |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
|
Use Scenario: Protecting 24 V digital input channels in programmable logic controllers from inductive kickback and field wiring transients. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed between signal line and ground, triggered within <1 ns to limit transient voltage to ≤146 V. Use Value: Prevents latch-up or permanent damage to optocoupler input stages and microcontroller GPIOs during relay coil de-energization. |
Use Scenario: Safeguarding LIN bus transceivers and door module sensors against load dump and jump-start surges in 12 V vehicle networks. IC Role / Device Role / Timing Role: Bidirectional transient suppressor connected across LIN data pair (LIN-H/L), clamping ±100 V spikes to <150 V. Use Value: Maintains communication integrity during ISO 7637-2 Pulse 5a (load dump) events without requiring additional series impedance or filtering. |
| Telecom Power Interface | Consumer Appliance Motor Drive |
|
Use Scenario: Shielding 48 V PoE-powered Ethernet ports from lightning-induced surges entering via RJ45 magnetics. IC Role / Device Role / Timing Role: Secondary-level TVS mounted after primary gas discharge tube, conducting >4 A surge current within nanoseconds. Use Value: Reduces let-through energy to <10 mJ, preserving PHY ICs and magnetics insulation integrity per IEC 61000-4-5 Ed.3. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machine control boards operating from 100–240 V AC mains. IC Role / Device Role / Timing Role: Bidirectional clamp across motor terminals, absorbing back-EMF energy during PWM switching transitions. Use Value: Eliminates need for snubber RC networks, reducing BOM count and board space while maintaining EN 61000-4-4 compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90CAHE3_A/H | Same electrical specs; RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification. | Suitable for commercial-grade industrial equipment where automotive reliability is not required. | Select when cost sensitivity outweighs halogen-free or automotive qualification needs. |
| SMAJ90CAHE3_A/H | Lower PPPM (400 W); same VWM/VC but higher clamping ratio (VC/VWM = 1.73); SMA package (smaller thermal mass). | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); unsuitable for IEC 61000-4-5 surges. | Choose only for space-constrained designs with verified lower surge exposure profiles. |
Compared with SMBJ90CAHE3_A/H and SMAJ90CAHE3_A/H, the SMBJ90CAHM3_A/H delivers halogen-free construction and AEC-Q101 validation without sacrificing clamping performance - making it the preferred choice for automotive-tier 1 suppliers and industrial OEMs requiring full compliance traceability.
Availability
SMBJ90CAHM3_A/H is available at Aetrix Electronics and suitable for industrial PLCs, automotive body electronics, telecom power interfaces, and consumer appliance motor drives requiring stable component supply with full compliance documentation.
Supply support for SMBJ90CAHM3_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, and protection devices with emphasis on reliability, precision, and application-specific optimization.
The SMBJ series was engineered for robust transient suppression in harsh environments - targeting automotive, industrial automation, and telecom infrastructure where failure modes must be eliminated through validated ruggedness and repeatable clamping behavior.
FAQ
What is the clamping voltage of SMBJ90CAHM3_A/H at its rated peak pulse current?
The SMBJ90CAHM3_A/H has a maximum clamping voltage (VC) of 146 V when subjected to its specified peak pulse current of 4.1 A with a 10/1000 µs waveform. This value is measured under standard test conditions (TA = 25 °C, mounted on 5.0 mm × 5.0 mm copper pads) and represents the upper voltage limit imposed on protected circuitry during transient events. The SMBJ90CAHM3_A/H maintains this clamping performance consistently across its qualified temperature range.
Is SMBJ90CAHM3_A/H suitable for automotive applications?
Yes, the SMBJ90CAHM3_A/H is AEC-Q101 qualified, as indicated by the "HM3" suffix, confirming its suitability for automotive applications including body control modules, lighting systems, and infotainment power supplies. It undergoes stress testing for temperature cycling, humidity, mechanical shock, and surge robustness per AEC-Q101 Rev D. The SMBJ90CAHM3_A/H is explicitly listed in Vishay's automotive-grade ordering matrix with full PPAP documentation support.
How does the bidirectional design of SMBJ90CAHM3_A/H affect its use in circuit protection?
The bidirectional design of SMBJ90CAHM3_A/H allows it to suppress voltage transients of either polarity symmetrically - essential for protecting AC-coupled signals, differential buses (e.g., LIN, RS-485), or floating power rails. Unlike unidirectional TVS diodes, the SMBJ90CAHM3_A/H requires no polarity marking on PCB silkscreen and functions identically regardless of orientation during placement. This simplifies layout and eliminates risk of reverse installation errors.
What is the thermal resistance of SMBJ90CAHM3_A/H, and how does it impact power derating?
The SMBJ90CAHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended pad layout (0.2" × 0.2" copper). At ambient temperatures above 25 °C, its 5.0 W steady-state power dissipation must be linearly derated - for example, to ~3.5 W at TA = 50 °C. This derating ensures the SMBJ90CAHM3_A/H remains within its 150 °C maximum junction temperature limit during continuous operation or high-duty-cycle surge events.
Does SMBJ90CAHM3_A/H meet RoHS and halogen-free requirements?
Yes, the "HM3" suffix in SMBJ90CAHM3_A/H denotes halogen-free, RoHS-compliant construction per EU Directive 2011/65/EU and JEDEC JS709C. The molding compound contains no brominated flame retardants or chlorine-based additives, and all terminations use matte tin plating compliant with JESD 22-B102 whisker testing Class 2. Certificate of Compliance and material declarations are available for the SMBJ90CAHM3_A/H upon request from Aetrix Electronics.
SMBJ90CAHM3_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):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 146V
- Current - Peak Pulse (10/1000µs):
- 4.1A
- 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)
SMBJ90CAHM3_A/H FAQ
1.How can I place an order for SMBJ90CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ90CAHM3_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 SMBJ90CAHM3_A/H reliable?
The price and inventory of SMBJ90CAHM3_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 SMBJ90CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ90CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ90CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ90CAHM3_A/H?
SMBJ90CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ90CAHM3_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 SMBJ90CAHM3_A/H?
For technical support, including SMBJ90CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ90CAHM3_A/H requirements.
6.How does Aetrix verify that SMBJ90CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ90CAHM3_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 SMBJ90CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ90CAHM3_A/H?
All SMBJ90CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ90CAHM3_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 SMBJ90CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMBJ90CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ90CAHM3_A/H Tags
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