SMAJ33CA LITTELFUSE TVS Diode (Bi-directional) (Diodes Moulded Non Polarised) In Stock
Littelfuse SMAJ33CA is a 33 V bidirectional transient voltage suppressor (TVS) diode in a SMA (DO-214AC) surface-mount package with a 400 W peak pulse power rating at 10/1000 µs. Features a clamping voltage of 53.3 V max and breakdown voltage range of 36.7 V to 40.6 V. Available from stock worldwide with fast shipping.
- Manufacturer
- LITTELFUSE
- Package
- Diodes Moulded Non Polarised
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- SMAJ33CA Datasheet PDF
- Category
- TVS Diode (Bi-directional)
- Price
- From $0.0178(MOQ 1)
- Temp Range
- -65.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 400 W peak pulse power dissipation capability at 10/1000 µs waveform for robust transient surge protection on 33 V rails
- Bidirectional clamping from 36.7 V to 40.6 V breakdown voltage with 53.3 V maximum clamping voltage for AC and bipolar circuits
- Compact SMA (DO-214AC) surface-mount silicon package enables PCB-level ESD and transient protection with minimal footprint
Applications
The SMAJ33CA is used for protecting 33 V power supply rails, signal lines, and sensitive semiconductor devices from ESD events and inductive transients in industrial equipment, automotive electronics, and power management circuits. Its bidirectional clamping action makes it suitable for AC signal lines and bipolar systems requiring symmetric overvoltage protection. The SMA package withstands high pulse currents while maintaining a low-profile SMT footprint.
Specifications
| Pbfree Code | No |
| YTEOL | 6 |
| Breakdown Voltage-Max | 40.6V |
| Breakdown Voltage-Min | 36.7V |
| Breakdown Voltage-Nom | 38.65V |
| Clamping Voltage-Max | 53.3V |
| Configuration | SINGLE, 1 CHANNEL |
| Diode Element Material | SILICON |
| Diode Type | TRANS VOLTAGE SUPPRESSOR DIODE |
| JEDEC-95 Code | DO-214AC |
| JESD-30 Code | R-PDSO-C2 |
| Non-rep Peak Rev Power Dis-Max | 400W |
| Number of Elements | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Polarity | BIDIRECTIONAL |
| Power Dissipation-Max | 3.3W |
| Qualification Status | Not Qualified |
| Reference Standard | IEC-61000-4-2; UL RECOGNIZED |
| Rep Pk Reverse Voltage-Max | 33V |
| Reverse Current-Max | 1 µA |
| Reverse Test Voltage | 33V |
| Surface Mount | YES |
| Technology | AVALANCHE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | C BEND |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Diodes Moulded Non Polarised |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8541.10.00.50 |
| Country of Origin | Mainland China, Malaysia |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SMAJ33CA:
suggested
suggested
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Frequently Asked Questions
What peak pulse power and clamping voltage does the SMAJ33CA TVS diode provide?
The SMAJ33CA dissipates up to 400 W peak pulse power at the 10/1000 µs waveform and clamps transients to a maximum of 53.3 V at peak pulse current. Its standoff voltage is 33 V with a breakdown voltage range of 36.7 V to 40.6 V, making it effective for protecting 33 V supply rails from inductive kickback and ESD events.
Why is the SMAJ33CA bidirectional variant needed instead of a unidirectional TVS for AC signal protection?
Bidirectional TVS diodes like the SMAJ33CA clamp both positive and negative transient spikes symmetrically, which is essential for AC signal lines and bipolar circuits where overvoltage can occur in either polarity. The SMAJ33CA provides ±33 V standoff with a maximum clamping voltage of 53.3 V in both directions, unlike unidirectional devices suited only for DC rail protection.
How does the SMA (DO-214AC) package of SMAJ33CA compare to through-hole TVS diodes for board-level protection?
The SMA DO-214AC surface-mount package of the SMAJ33CA supports automated reflow assembly and occupies approximately 4.4 mm x 2.7 mm board area, significantly less than comparable through-hole DO-41 TVS packages. It also provides lower inductance in the current path, improving clamping response time and effectiveness for fast ESD transients above 33 V.
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About LITTELFUSE
LITTELFUSE is a leading electronic component manufacturer. FindMyChip sources LITTELFUSE ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.0300 | $0.03 |
| 850+ | $0.0285 | $24.23 |
| 3000+ | $0.0190 | $57.00 |
| 7500+ | $0.0178 | $133.50 |
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