Brivo Unified Credential - B-BUC3-37-SF25
The Brivo Unified Credential (B-BUC3-37) is a secure, multi-format smart credential card leveraging MIFARE DESFire EV3. Designed for compatibility with Brivo, Allegion, ASSA ABLOY, and other partner readers, it simplifies access control across existing infrastructure while improving security.
Brivo Unified Credential
Smart KeyFob EV3 - 8K.
Compatible with Brivo B-BS, B-BSP and B-S series smart readers. Also compatible with Allegion NDEB, LEB and Control locksets. 37-bit format.
Quantity 25.
- Quantity

The B-BUC3-37 Brivo Unified Credential is a modern access credential combining strong security, broad compatibility, and convenient form. Itβs tailored for organizations looking to upgrade traditional proximity cards to smarter, more secure solutions without replacing all existing hardware.
π Security & Technology
Uses 13.56 MHz frequency with MIFARE DESFire EV3 and LEAF file structure
Offers advanced security beyond standard proximity (125 kHz) credentials
EAL 5+ security level
π Compatibility & Flexibility
Works across a wide variety of locks and readers: Brivo Gen 1 & Gen 2 Smart Readers, Allegion NDE, LE, AD, Control Lock, XE360, ASSA ABLOY Aperio locksets, Farpointe Connekt readers (with LEAF configuration)
Supports formats:
β’ 37-bit (without facility code)
β’ 56-bit (with facility code)
π Form & Function
Memory size: 8 KB
Read range up to ~3 in (76 mm) under standard conditions (depending on reader and credential format)
Physical dimensions: standard credit-card size: ~3.37β³ Γ 2.13β³ Γ 0.03β³ (85.6 mm Γ 54.0 mm Γ 0.8 mm)
π§° Design & Materials
Materials: combinations such as PVC + PET or polycarbonate, depending on version
Color options: white/printable composite, or black with white center
π‘οΈ Environmental & Operating Specs
Storage / operating temperature ranges suitable for indoor/outdoor environments (approx. -50Β°F to 160Β°F storage, varying operating depending on version)
Built tough for real-world usage
π Use-Case Benefits
Simplifies installations by allowing one credential to work with multiple device types and lock sets
Helps phase out proximity cards without replacing all readers immediately
Ideal for sites using mixed-vendor hardware, or doing gradual upgrades
