My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMAJ36AHE3/61
- Part No.:
- SMAJ36AHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ36AHE3/61.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,903
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ36AHE3/61 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for robust overvoltage protection of sensitive electronics. It features a 36 V standoff voltage (VWM), 40.0–44.2 V breakdown voltage (VBR) at 1 mA, and clamps transients to ≤58.1 V at 6.9 A peak pulse current (IPPM) under 10/1000 μs waveform - ideal for safeguarding power rails and I/O lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMAJ36AHE3/61 datasheet, SMAJ36AHE3/61 pinout, SMAJ36AHE3/61 application, or SMAJ36AHE3/61 equivalent, key selection criteria include its AEC-Q101 qualification, 400 W peak pulse power rating (derated to 300 W above 78 V), low 0.1 % duty cycle capability, and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below VWM = 36 V and rapidly transitions to low-impedance conduction once reverse voltage exceeds VBR = 40.0–44.2 V. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ns), enabling effective suppression of ESD, lightning-induced surges, and inductive switching transients.
The device is rated for repetitive 10/1000 μs pulses at 0.01 % duty cycle, with thermal resistance RθJA = 120 °C/W (on 0.2" × 0.2" copper pads) and maximum junction temperature TJ = +150 °C. Its unidirectional polarity (cathode band marked) supports DC-biased protection circuits without forward conduction interference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 36 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin. |
| VBR (Breakdown Voltage) | 40.0–44.2 V at 1 mA - Confirmed minimum/maximum threshold where avalanche conduction initiates reliably. |
| VC (Clamping Voltage) | ≤58.1 V at IPPM = 6.9 A - Peak voltage seen by protected circuit during worst-case 10/1000 μs surge. |
| PPPM (Peak Pulse Power) | 400 W (≤78 V), 300 W (>78 V) - Sustained transient energy absorption capability per single pulse. |
| IFSM (Surge Current) | 40 A (8.3 ms half-sine) - Withstands non-repetitive inrush or fault currents without failure. |
| TJmax | +150 °C - Enables operation in under-hood automotive and high-temperature industrial environments. |
| Leakage (ID) | ≤1.0 μA at 36 V - Negligible standby power loss and minimal loading on source circuits. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode identified by black band; anode is unmarked end. Meets UL 94 V-0 flammability rating and MSL Level 1 (260 °C reflow peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VREV > VBR. |
| Anode (unmarked end) | Reference node | Typically tied to system ground or lower-potential rail; completes clamping path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan. |
| 400 W peak pulse power | Handles high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) without degradation on standard PCB copper pads. |
| Glass-passivated junction | Ensures stable VBR tolerance, low leakage drift over life, and immunity to moisture-induced parameter shift. |
| Fast response time (<1 ns) | Clamps before downstream ICs experience damaging overvoltage - critical for protecting high-speed logic and analog inputs. |
| RoHS-compliant & halogen-free option | HE3 suffix denotes RoHS-compliant construction; HM3 variant adds halogen-free molding compound for strict environmental compliance. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
|
Use Scenario: Protects 12 V supply rail and LIN bus interface against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp positive-going transients. Use Value: Maintains VC ≤58.1 V during 400 W surges, preventing latch-up or gate oxide damage in MCU and transceiver ICs. |
Use Scenario: Shields 24 V digital input channels from field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-rated clamping device across input terminals to limit voltage seen by optocoupler and conditioning circuitry. Use Value: Low 1.0 μA leakage avoids false triggering; 40.0–44.2 V VBR aligns precisely with 24 V system overvoltage thresholds. |
| Consumer Appliance Motor Drive Board | Telecom Power Supply Front-End |
|
Use Scenario: Guards microcontroller GPIOs and MOSFET gate drivers from brush-commutator noise and inductive kickback. IC Role / Device Role / Timing Role: Localized point-of-use protection adjacent to sensitive control nodes. Use Value: SMA package enables compact layout; 0.1 % duty cycle rating supports repeated motor start-stop cycles without thermal runaway. |
Use Scenario: Suppresses AC-line coupled surges and lightning-induced transients entering via primary-side rectifier. IC Role / Device Role / Timing Role: Secondary-side clamping element across DC bus to protect PWM controller and feedback optocoupler. Use Value: 150 °C TJmax and 120 °C/W RθJA ensure stable operation in enclosed telecom enclosures with limited airflow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/61 | Commercial-grade version; same electrical specs but not AEC-Q101 qualified. | Lacks automotive qualification; suitable for industrial/commercial designs without automotive certification requirements. | Select when cost sensitivity outweighs need for automotive reliability validation. |
| SMBJ36AHE3/61 | Same VWM/VBR/VC, but SMB (DO-214AA) package offers higher PPPM = 600 W and lower RθJA = 80 °C/W. | Better thermal performance and surge margin; requires larger PCB footprint than SMA. | Choose when higher surge robustness or extended thermal headroom is required in space-constrained but thermally demanding layouts. |
Compared with SMAJ36AHE3/61, the E3/61 variant trades automotive qualification for lower cost, while SMBJ36AHE3/61 delivers greater power handling and thermal efficiency at the expense of board area - enabling trade-offs between qualification, footprint, and surge margin.
Availability
SMAJ36AHE3/61 is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, consumer appliance motor controls, and telecom power front-ends requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMAJ36AHE3/61 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMAJ series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where robustness against ESD, lightning, and inductive switching is mission-critical.
FAQ
What is the clamping voltage of SMAJ36AHE3/61 at its rated peak pulse current?
The SMAJ36AHE3/61 clamps to a maximum of 58.1 V at its specified peak pulse current of 6.9 A under the standard 10/1000 μs waveform. This value is measured and guaranteed per Vishay's datasheet (Document Number: 88390, Rev. 09-Jan-2024), ensuring predictable voltage limiting during surge events without exceeding safe operating limits for downstream ICs.
Is SMAJ36AHE3/61 suitable for automotive applications?
Yes, SMAJ36AHE3/61 is AEC-Q101 qualified, confirming its suitability for automotive applications including engine control units, body control modules, and infotainment power supplies. The HE3 suffix explicitly denotes RoHS-compliant construction with full AEC-Q101 stress testing - covering temperature cycling, high-temperature reverse bias, and ESD robustness per automotive reliability standards.
How does the SMAJ36AHE3/61 differ from the SMAJ36A-E3/61?
The SMAJ36AHE3/61 and SMAJ36A-E3/61 share identical electrical specifications (VWM = 36 V, VBR = 40.0–44.2 V, VC ≤58.1 V), but only the HE3 variant carries AEC-Q101 qualification. The E3/61 is commercial-grade and intended for non-automotive applications where automotive reliability validation is not required - making SMAJ36AHE3/61 the correct choice for certified automotive designs.
What is the maximum operating temperature for SMAJ36AHE3/61?
The SMAJ36AHE3/61 has a maximum junction temperature (TJmax) of +150 °C, validated per its thermal characterization and AEC-Q101 qualification. This allows reliable operation in under-hood automotive environments and high-temperature industrial enclosures, provided PCB thermal design meets the recommended 0.2" × 0.2" copper pad layout per terminal to maintain RθJA ≤120 °C/W.
Does SMAJ36AHE3/61 have polarity marking, and how is it oriented in circuit?
Yes, SMAJ36AHE3/61 is unidirectional and features a cathode band (black stripe) on the SMA package. In circuit, the banded end connects to the line being protected (e.g., 36 V rail), while the unmarked anode end connects to ground - enabling clamping of positive transients only. Reverse connection would prevent proper protection and may cause forward conduction during normal operation.
SMAJ36AHE3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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):
- 6.9A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
SMAJ36AHE3/61 FAQ
1.How can I place an order for SMAJ36AHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ36AHE3/61 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 SMAJ36AHE3/61 reliable?
The price and inventory of SMAJ36AHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ36AHE3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ36AHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ36AHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ36AHE3/61?
SMAJ36AHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ36AHE3/61 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 SMAJ36AHE3/61?
For technical support, including SMAJ36AHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ36AHE3/61 requirements.
6.How does Aetrix verify that SMAJ36AHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ36AHE3/61 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 SMAJ36AHE3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ36AHE3/61?
All SMAJ36AHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ36AHE3/61, 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 SMAJ36AHE3/61 part is unused and in its original packaging.
Return procedure for SMAJ36AHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ36AHE3/61 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
