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Vishay General Semiconductor - Diodes Division SMBJ36A-M3/5B
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- Part No.:
- SMBJ36A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ36A-M3/5B.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,523
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Product details
Overview
SMBJ36A-M3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping inductive switching transients and ESD events on power rails and signal lines. It features a 36 V standoff voltage (VWM), 40.0–44.2 V breakdown range at 1 mA, 58.1 V maximum clamping voltage at 10.3 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 µs waveform - deployed in industrial sensor interfaces and DC power input protection.
For engineers reviewing the SMBJ36A-M3/5B datasheet, SMBJ36A-M3/5B pinout, SMBJ36A-M3/5B application, or SMBJ36A-M3/5B equivalent, this page delivers verified electrical specs, thermal derating behavior, clamping performance under surge conditions, and precise mechanical footprint data for PCB layout and reliability validation.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its specified VBR range (40.0–44.2 V). Its low incremental surge resistance ensures minimal voltage overshoot during fast transients, while its glass-passivated junction provides stable leakage (<1.0 µA at 36 V) and long-term reliability under repetitive surge stress.
The device is rated for 100 A non-repetitive forward surge (8.3 ms half-sine), supports 150 °C max junction temperature, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its SMB package enables automated placement and delivers thermal resistance of 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 36 V nominal systems. |
| VBR @ IT = 1 mA | 40.0–44.2 V - Breakdown onset range; ensures consistent turn-on across production lots and temperature. |
| VC @ IPPM = 10.3 A | 58.1 V - Clamped voltage during 10/1000 µs surge; limits downstream IC stress to ≤58.1 V under worst-case 600 W transient. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; validates robustness against IEC 61000-4-5 Level 4 surges. |
| IFSM | 100 A - Single half-sine surge rating (8.3 ms); supports protection of 24–48 V DC power inputs against load dump events. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial enclosures. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with standard SMT pick-and-place and reflow profiles. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads. Cathode indicated by band on body; anode is unmarked end. Meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient clamp output node | Connected to protected line (e.g., +36 V rail); conducts avalanche current to ground during overvoltage events. |
| Anode (unbanded end) | Reference / return path | Typically tied to system ground or low-impedance return plane; completes clamping loop with minimal inductance. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables compliance with IEC 61000-4-5 surge immunity requirements up to Level 4 (4 kV line-to-ground) in compact SMB form factor. |
| Low clamping voltage (58.1 V @ 10.3 A) | Restricts voltage excursion on protected 36 V circuits to <62% above nominal rail, safeguarding MOSFETs and PMICs with 65 V absolute max ratings. |
| Glass passivated junction | Ensures stable leakage (<1.0 µA at VWM) and repeatable VBR over 10+ years of field operation in humid or thermally cycled environments. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets IPC-1752A material declaration requirements and EU Directive 2011/65/EU without compromising surge robustness or thermal performance. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow assembly without preconditioning or baking; eliminates moisture-related popcorning risk. |
Applications
| Industrial Sensor Interface Protection | DC Power Input Surge Suppression |
|---|---|
|
Use Scenario: Protecting analog front-end inputs of pressure/temperature sensors in factory automation PLC modules exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between sensor signal line and ground, activated within <1 ns to limit transient excursions to ≤58.1 V. Use Value: Prevents latch-up or gate oxide damage in precision op-amps and ADCs with 6 V input tolerance, maintaining measurement integrity during 1 kV/µs transients. |
Use Scenario: Safeguarding 36 V DC input stage of industrial Ethernet switch power supply against lightning-induced surges and inductive load dump. IC Role / Device Role / Timing Role: Primary clamping device on main DC bus, coordinated with upstream fuse and downstream LC filter to absorb 600 W transient energy. Use Value: Limits bus voltage to 58.1 V during 10/1000 µs surges, preventing overvoltage shutdown or catastrophic failure of 60 V-rated buck controllers and MOSFETs. |
| Automotive Body Control Module (BCM) Inputs | Telecom Power Shelf Transient Guarding |
|
Use Scenario: Protecting LIN bus and switched 12–48 V control inputs in BCMs subjected to ISO 7637-2 Pulse 1/2a/5a transients. IC Role / Device Role / Timing Role: Unidirectional TVS mounted directly at connector entry point, with cathode to protected line and anode to chassis ground. Use Value: Achieves <100 ps response time and clamps ISO 7637-2 Pulse 5a (100 V/500 ms) to <60 V, preserving microcontroller GPIO integrity without external series impedance. |
Use Scenario: Guarding -48 V DC distribution rails in telecom central office power shelves against accidental hot-swap transients and rectifier recovery spikes. IC Role / Device Role / Timing Role: Reverse-biased clamp on negative rail (cathode to -48 V, anode to ground), absorbing negative-going surges up to 600 W. Use Value: Maintains rail stability during 100 A surge events, preventing false triggering of -48 V supervisor ICs and avoiding service interruption in carrier-grade systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A-E3/5B | Same electrical specs and SMB package; RoHS-compliant but contains brominated flame retardants (non-halogen-free). | Acceptable for commercial-grade designs where halogen-free requirement is not mandated (e.g., non-automotive, non-telecom equipment). | Select when cost sensitivity outweighs halogen-free compliance; identical layout and thermal behavior. |
| SMAJ36A-M3 | Lower peak pulse power (400 W vs. 600 W); same VWM, VBR, and VC; SMA (DO-214AC) package with smaller 4.57 mm × 2.69 mm footprint. | Suitable only for lower-energy transients (IEC 61000-4-5 Level 2); limited to space-constrained consumer or portable applications. | Choose only if board area is critical and surge threat level is ≤400 W; requires PCB redesign due to different pad layout and thermal mass. |
Compared with SMBJ36A-E3/5B, the M3 variant adds halogen-free compliance without sacrificing surge rating or thermal performance; versus SMAJ36A-M3, SMBJ36A-M3/5B delivers 50% higher pulse power in a slightly larger but more thermally robust package - critical for industrial and telecom deployments.
Availability
SMBJ36A-M3/5B is available at Aetrix Electronics and suitable for industrial sensor interfaces, DC power input surge suppression, automotive body control modules, and telecom power shelf guarding requiring stable component supply and full traceability.
Supply support for SMBJ36A-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, and protection devices with emphasis on reliability, surge robustness, and automotive qualification.
The SMBJ series was engineered for high-energy transient suppression in harsh environments - targeting industrial automation, transportation, and infrastructure systems where failure modes must be mitigated without adding complexity or cost.
FAQ
What is the maximum clamping voltage of SMBJ36A-M3/5B under a 10/1000 µs surge?
The SMBJ36A-M3/5B clamps to a maximum of 58.1 V when subjected to its rated peak pulse current of 10.3 A with a 10/1000 µs waveform. This value is measured per JEDEC standards and guarantees that protected circuitry downstream of SMBJ36A-M3/5B will not experience voltages exceeding 58.1 V during such transients - essential for safeguarding 60 V-rated components.
Does SMBJ36A-M3/5B meet automotive qualification standards?
The base SMBJ36A-M3/5B is commercial-grade and not AEC-Q101 qualified; however, Vishay offers the automotive variant SMBJ36AHM3_B/I, which carries the HM3 suffix and explicit AEC-Q101 qualification. Engineers requiring automotive use must specify the HM3-based ordering code - SMBJ36A-M3/5B itself is intended for industrial, telecom, and computing applications where extended temperature and surge reliability are required but formal automotive certification is not mandated.
How does the M3 suffix affect the environmental compliance of SMBJ36A-M3/5B?
The M3 suffix on SMBJ36A-M3/5B indicates halogen-free, RoHS-compliant construction - meaning no brominated or chlorinated flame retardants are used in the molding compound, and lead content complies with EU Directive 2011/65/EU. This satisfies IPC-1752A material declarations and supports green manufacturing initiatives without degrading electrical or thermal performance relative to E3-suffix variants.
What is the thermal resistance of SMBJ36A-M3/5B, and how does it impact PCB layout?
SMBJ36A-M3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe operation under repetitive surges, designers must allocate adequate copper area and avoid excessive trace length between the SMBJ36A-M3/5B cathode/anode and their respective ground/power planes - insufficient copper increases junction temperature and reduces surge endurance.
Can SMBJ36A-M3/5B be used in bidirectional protection applications?
No - SMBJ36A-M3/5B is strictly unidirectional, with polarity marked by a cathode band. For bidirectional transient suppression, Vishay specifies the SMBJ36CA variant (e.g., SMBJ36CA-M3/5B), which exhibits symmetrical clamping in both directions and lacks polarity marking. Using SMBJ36A-M3/5B in a bidirectional configuration would result in forward conduction during negative transients, potentially damaging the device or failing to protect the circuit.
SMBJ36A-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):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 10.3A
- Power - Peak Pulse:
- 600W
- 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)
SMBJ36A-M3/5B FAQ
1.How can I place an order for SMBJ36A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ36A-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 SMBJ36A-M3/5B reliable?
The price and inventory of SMBJ36A-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 SMBJ36A-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ36A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ36A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ36A-M3/5B?
SMBJ36A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ36A-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 SMBJ36A-M3/5B?
For technical support, including SMBJ36A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ36A-M3/5B requirements.
6.How does Aetrix verify that SMBJ36A-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ36A-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 SMBJ36A-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ36A-M3/5B?
All SMBJ36A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ36A-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 SMBJ36A-M3/5B part is unused and in its original packaging.
Return procedure for SMBJ36A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ36A-M3/5B Tags
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